CN205705679U - The printing mechanism of set type flexible printing machine - Google Patents

Abstract

The printing mechanism of the unit type flexographic printing machine is equipped with anilox roller, version roller, bottom roller and UV assembly on the frame. The bottom roller and UV assembly work together. The version roller is driven by the first power source to rotate, and the bottom roller The second power source is driven to rotate, and there is also a passive roller on the frame. The passive roller is located between the anilox roller and the bottom roller. Under working conditions, the passive roller cooperates with the plate roller to print; The two tasks are separated and completed on two rollers. The passive roller can be used as the printing roller to complete the printing with the plate roller, and the UV component is used to complete the curing on the bottom roller. Even if the passive roller is stained with ink, it can be easily removed without curing. .

Description

Printing mechanism of unit type flexographic printing machine

technical field

The utility model relates to a printing mechanism of a unit type flexographic printing machine.

Background technique

Check the Chinese patent documents CN 204526377 U and CN201049536Y, a plate roll, a bottom roll and an anilox roll (ie anilox roll) are set on its frame. The plate roller and the bottom roller cooperate to complete the printing, and the bottom roller is used as the printing roller. The bottom roller cooperates with the UV component to complete the printing and curing, and the curing is completed on the bottom roller. When printing, the ink will stick to the bottom roller, and the ink stuck on the bottom roller is difficult to remove due to solidification.

Both the version roller and the bottom roller are driven by a power source. Due to the production process error of the rollers, the line speed of the mating surface of the version roller and the bottom roller cannot be guaranteed to be consistent, resulting in a decrease in printing accuracy and printing quality.

CN 204526377 The front and rear axle shoulders of the plate roller during printing work in U are supported by semi-circular roller pillows and then compressed by hook plates. On the inner side of the frame wallboard, there are left and right support arms under the roller pillow, and the left and right support arms are provided with corner arcs to support the roller pillow. The arc center of the corner is concentric with the center of the bottom roller. The swing setting of the left and right support arms is pushed by the left and right support arm cylinders. The swing fulcrum is located at the upper end of the support arms. The outward swing of the left and right support arms is limited by the left and right limit blocks. The block adjustable setting is connected with the left and right small adjustment motors. Bottom roll and anilox roll are of different sizes, generally the bottom roll is larger than the screen roll, which makes it inconvenient to adjust the pressure of plate rolls of different sizes.

Utility model content

In view of the technical problems existing in the background technology, the technical problem solved by the utility model is to provide a printing mechanism of a unit type flexographic printing machine.

In order to solve the above technical problems, the utility model adopts the following technical scheme: the printing mechanism of the unit type flexographic printing machine, the frame is equipped with anilox roller, plate roller, bottom roller and UV assembly, and the bottom roller and UV assembly work together , the version roller is rotated by the transmission of the first power source, and the bottom roller is rotated by the transmission of the second power source. It is characterized in that: there is also a passive roller on the frame, and the passive roller is located between the anilox roller and the bottom roller. Next, the passive roller cooperates with the version roller to print.

The anilox roll, version roll, bottom roll and passive roll are arranged parallel to each other.

Both the first power source and the second power source include servo motors.

The outer diameters of the passive roller and the anilox roller are consistent, and the central axis of the passive roller and the central axis of the anilox roller are in the same plane, and the central axis of the version roller is located on the symmetrical plane of the passive roller and the anilox roller.

The plane is a horizontal plane.

During the printing work, the front and rear shoulders of the plate roller are supported by semi-circular roller pillows. The roller pillows are floating on the frame. There are left pressure adjustment support arms and right pressure adjustment support arms under the roller pillows. Both the pressure adjustment support arm and the right pressure adjustment support arm are swingably set on the frame, and the swing fulcrums of each pressure adjustment support arm are set at their upper ends, and the left pressure adjustment support arm and the right pressure adjustment support arm are provided with corner arcs The center of the roller pillow is supported, the center of the corner arc of the left pressure-adjusting support arm is set concentrically with the center of the anilox roller, and the center of the corner arc of the right pressure-adjusting support arm is concentrically set with the center of the passive roller. Each pressure adjustment support arm is equipped with a support cylinder and an adjustment motor, and is driven to swing on the frame through the cooperation of the support cylinder and the adjustment motor.

Each pressure adjustment support arm is equipped with a zero switch, and the zero switch is matched with the matching pressure adjustment support arm. Each zero switch is set on the frame, and each zero switch is connected with the control device. The motor is connected, and each zero position switch corresponds to the adjustment motor paired with each pressure adjustment support arm.

The beneficial effect of the utility model is that, adopting the above technical scheme, the two tasks of printing and curing are separated and completed on two rollers, and the passive roller can be used as the printing roller to cooperate with the plate roller to complete the printing, and the bottom roller can be used to cooperate with the UV component to complete the curing. Even if the passive roller is stained with ink, it can be easily removed without curing. The passive roller does not have an additional power source for transmission, but the passive roller rotates with the version roller and the substrate to carry out printing work. The linear speed of the mating surface of the passive roller and the version roller will remain consistent, and the printing accuracy and printing quality will be better. . The outer diameters of the passive roller and the anilox roller are consistent, and the central axis of the version roller is located on the symmetrical plane of the passive roller and the anilox roller, which makes the pressure adjustment of the version roller more convenient. The initial position of each pressure adjustment support arm is set by setting the zero position switch, so that each pressure adjustment support arm can be quickly returned to the initial position during adjustment, so as to re-adjust the pressure of the plate roller. Therefore, compared with the prior art, the utility model has substantive characteristics and progress.

Description of drawings

The relevant details and working principles of the embodiments and examples of the present utility model will be described below in conjunction with the accompanying drawings.

Fig. 1 is the structural representation of the utility model.

FIG. 2 is a schematic structural view of FIG. 1 without the front side panel of the rack.

Fig. 3 is a structural schematic view of Fig. 2 without the pressure regulating support arm, the supporting cylinder and the regulating motor.

FIG. 4 is a schematic diagram of the rear structure of the rack in FIG. 1 .

In the figure: 11 pressure hook, 19 version of roller main motor, 20 version of pressure hook lifting cylinder, 21 version of roller connecting plate, 24 linear guide rail, 25 switch seat, 27 version of roller lifting cylinder, 28 version of roller sleeve mounting plate, 29 version of roller main Motor, 30 slide bars, 31 press hooks and overturn cylinders.

detailed description

Referring to the accompanying drawings, the printing mechanism of the group flexographic printing machine in this embodiment is provided with an anilox roller 7, a version roller 8, a bottom roller 10 and a UV assembly on the frame. The UV component includes a curing box, UV lamp and fan, etc. The bottom roller and the UV component work together to complete the curing. The version roller 8 is driven to rotate by the first power source, and the bottom roller 10 is rotated by the second power source, both of the first power source and the second power source include servo motors. The frame is also provided with a passive roller 9, which is located between the anilox roller 7 and the bottom roller 10. Under working conditions, the passive roller 9 cooperates with the version roller 8 to complete printing. The passive roller will be driven by the substrate (such as paper) to rotate. The two work of printing and curing are separated on two rollers, and the passive roller can be used as the base roller to complete the printing, and the bottom roller can be combined with the UV component to complete the curing. Even if the passive roller is stained with ink, it has not been cured. It can also be easily removed, such as alcohol can be used to wipe. The passive roller is driven by the substrate to carry out the printing work, the linear speed of the passive roller surface and the plate roller surface will be consistent, and the printing accuracy and printing quality will be better.

The outer diameters of the passive roller and the anilox roller are consistent, and the central axis of the passive roller and the central axis of the anilox roller are in the same plane (the plane is preferably a horizontal plane), the bottom roller is located on the right side of the passive roller, and the central axis of the plate roller is at On the symmetrical surface of the passive roll and the anilox roll, the center of the plate roll can be kept on a straight line, which makes the pressure adjustment of the plate roll more convenient.

The anilox roll, plate roll, base roll and driven roll will be arranged parallel to each other. Version roller 8 will be driven by version roller lifting cylinder 27 to lift. Version roller lifting cylinder 27 drives version roller connection plate 21 lifting, and version roller is connected on the version roller connection plate 21 by version roller cover installation plate 28, and version roller cover installation plate 28 has axle sleeve for version roller sleeve.

In CN 204605131 U, pressure adjustment will be performed on the plate roller. The version roller 8 is driven by the first motor 26 to move axially, and the axial movement of the version roller needs to be limited within a certain orientation, which is not involved in CN 204605131 U. In this embodiment, the plate roller is connected with a touch block 22, and the frame is provided with a switch seat 25 for the installation of the front limit switch and the rear limit switch 23, and the touch block moves between the front limit switch and the rear limit switch. And the touch block cooperates with the front limit switch and the rear limit switch respectively, and the front limit switch and the rear limit switch are respectively connected with the first motor. When the first motor drives the plate roller to move back and forth, the bumper moves back and forth synchronously with the plate roller. When the bumper touches the front limit switch or the rear limit switch, the front limit switch or the rear limit switch drives The signal stops the first motor.

The front and rear shoulders of the plate roller 8 during printing work are all supported by semi-circular roller pillows, and the semi-circular-shaped roller pillows can be 1/2 rings or 1/2 rings. 2 rings are slightly smaller. The roller pillows are floatingly arranged on the frame, and a roller pillow is respectively arranged at the front and back, and a pressure adjustment support arm 13 (including a left pressure adjustment support arm and a right pressure adjustment support arm) is arranged below the roller sleeper. Both the left pressure-adjusting support arm and the right pressure-adjusting support arm are swingably set on the frame, and the swing fulcrums of each pressure-adjusting support arm are set at their upper ends. The arc supports the roller pillow. The center of the corner arc of the left pressure-adjusting support arm is set concentrically with the center of the anilox roller, and the center of the corner arc of the right pressure-adjusting support arm is set concentrically with the center of the driven roller. Each pressure adjustment support arm is equipped with a support cylinder 14 and an adjustment motor 1 and drives it to swing on the frame through the cooperation of the support cylinder and the adjustment motor. The support cylinder is connected with the pressure adjustment support arm through the support rod 15 . The swing of the left pressure adjustment support arm and the right pressure adjustment support arm will drive the float of the roller pillow, thereby achieving the adjustment of the pressure of the plate roller. The left and right symmetrical structure makes the pressure adjustment of the plate roller more convenient.

Each pressure adjustment support arm is equipped with a zero switch 17, and the zero switch 17 is set on the frame through the mounting base 16. The zero position switch is matched with the matching pressure adjustment support arm for triggering, and a pressure block 18 can be arranged on the pressure adjustment support arm to cooperate with the zero position switch. The zero position switch can adopt a touch switch to perform trigger cooperation through touch, or adopt a position sensor to perform trigger cooperation through the position sensor. Each zero position switch is arranged on the frame, each zero position switch is connected with the control device, the control device is connected with each adjustment motor, and each zero position switch corresponds to the adjustment motor paired with each pressure adjustment support arm. The initial position of each pressure adjustment support arm is set by setting the zero position switch, so that each pressure adjustment support arm can be quickly returned to the initial position during adjustment, so as to re-adjust the pressure of the plate roller. When the adjustment motor works and cooperates with the support cylinder to drive the pressure adjustment support arm to swing, when the pressure adjustment support arm triggers the zero position switch, it is the initial position (ie zero position). At this time, the control device will receive the signal of the zero position switch , and then the control device can control the corresponding adjustment motor to perform new pressure adjustment work, and adjust from the initial position. The adjustment motor can be an ordinary motor, and the cost is lower.

The frame 5 is provided with a first semicircular bearing seat, a swing support 4 and a support locking device, the swing support is swingably arranged on the frame, the swing support is provided with a second semicircular bearing seat, and the first semicircular bearing The bearing seat and the second semi-circular bearing seat are used for the installation of the anilox roller. The second semi-circular bearing seat always supports the anilox roller during the swinging process of the swing bracket. The semi-circular ring can be 1/2 circular ring or Slightly smaller than 1/2 ring. The bracket locking device includes a locking cylinder 3 and a locking block 55. The locking cylinder drives the locking block to move. When the swing bracket brings the anilox roller to the working position, the locking block moves to lock the swing bracket. Pins can be provided on which the locking block can act when locked.

Claims (7)

1. The printing mechanism of the unit type flexo printing machine. The frame is equipped with anilox roller (7), version roller (8), bottom roller (10) and UV assembly. The bottom roller and UV assembly work together. The version roller is composed of Driven by the first power source to rotate, the bottom roller is driven by the second power source to rotate. It is characterized in that: there is also a passive roller (9) on the frame, and the passive roller (9) is located between the anilox roller (7) and the bottom roller. (10), the passive roller (9) cooperates with the version roller (8) to print. 2. The printing mechanism of the unit type flexographic printing machine according to claim 1, characterized in that: the anilox roller, the plate roller, the bottom roller and the driven roller are arranged parallel to each other. 3. The printing mechanism of the group flexo printing machine according to claim 1, wherein both the first power source and the second power source include servo motors. 4. The printing mechanism of the unit type flexographic printing machine according to claim 1, characterized in that: the outer diameter of the driven roller (9) is consistent with that of the anilox roller (7), and the central axis of the driven roller is in line with the anilox roller (7). The central axis of the pattern roller is in the same plane, and the central axis of the version roller (8) is located on the symmetrical plane of the passive roller (9) and the anilox roller (7). 5. The printing mechanism of the unit type flexographic printing machine according to claim 4, characterized in that: the plane is a horizontal plane. 6. The printing mechanism of the unit type flexographic printing machine as claimed in claim 4, characterized in that: the front and rear shoulders of the plate roller during printing work are supported by semi-circular roller pillows, and the roller pillows are floating. On the frame, a left pressure-regulating support arm and a right pressure-regulating support arm are arranged below the roller pillow, and both the left pressure-regulating support arm and the right pressure-regulating support arm are swingably arranged on the frame. Located at their upper ends, the left pressure-adjusting support arm and the right pressure-adjusting support arm are provided with corner arcs to support the roller pillow, and the center of the corner arc of the left pressure-adjusting support arm is concentric with the center of the anilox roller Setting, the center of the corner arc of the right pressure-adjusting support arm is set concentrically with the center of the driven roller, each pressure-adjusting support arm is equipped with a support cylinder and an adjustment motor, and is driven by the support cylinder and the adjustment motor. Swing on the shelf. 7. The printing mechanism of the flexo printing machine as claimed in claim 6, characterized in that: each pressure adjustment support arm is equipped with a zero position switch, and the zero position switch is triggered and matched with the matched pressure adjustment support arm, each The zero switch is arranged on the frame, each zero switch is connected with the control device, the control device is connected with each adjustment motor, and each zero switch corresponds to the adjustment motor paired with each pressure adjustment support arm.