CN221954064U - A gravure printing device based on self-adjusting center roller distance - Google Patents

Abstract

The utility model relates to the field of gravure printing technology, and discloses a gravure printing device based on self-adjusting center roller distance, including a paper feeder with a bottom plate and a top thereof for printing paper, a gravure printing unit, a transmission unit and an adjustment and laminating mechanism, a paper delivery unit is arranged between the paper feeder and the gravure printing unit, an adjustment and laminating mechanism for preventing paper from being offset is arranged inside the paper feeder, and a roller distance adjustment transmission mechanism for adjusting the roller distance is arranged inside the gravure printing unit. By adjusting the laminating mechanism, the transmitted paper can be pressed to avoid the phenomenon of warping or deviation from the paper delivery unit, and by adjusting the roller distance transmission mechanism, the distance between the impression roller and the gravure roller can be dynamically adjusted according to the actual printing processing situation, and the impression roller and the gravure roller can be made to rotate in the opposite direction, so as to improve the gravure printing of the paper and enhance the practicality of the device.

Description

A gravure printing device based on self-adjusting center roller distance

Technical Field

The utility model relates to the technical field of gravure printing, in particular to a gravure printing device based on self-regulating center roller distance.

Background Art

Gravure printing, also known as gravure printing, is a direct printing method. It directly presses the ink contained in the gravure pits onto the substrate. The light and dark levels of the printed picture are determined by the size and depth of the pits. Therefore, in actual printing work, in order to improve the gravure printing effect, it is necessary to adjust the distance between the gravure cylinder and the impression cylinder according to the actual printing situation to meet different printing needs.

According to the gravure printing machine with an automatic center distance adjustment device disclosed in the patent website (authorization announcement number: CN220464995U), during the use of the existing device, the paper to be printed is first transferred from the paper feeder to the top of the impression cylinder, and the distance between the gravure cylinder and the impression cylinder is adjusted by the set center distance automatic adjustment device, and then the paper is printed. After printing, the printed paper is transferred to the paper delivery machine through the transmission mechanism. However, although the existing device can complete the gravure printing of the paper, it can only adjust the distance between the gravure cylinder and the impression cylinder. The distance can be adjusted, but after the position is changed, two sets of driving devices are needed to drive the rotation of the gravure cylinder and the impression cylinder respectively, and because the angle between the gravure cylinder and the impression cylinder changes when the distance is changed, the pit pressing surface of the paper is changed, resulting in poor printing effect. In addition, when the paper is transferred from the paper feeder to the impression cylinder, the paper is prone to warping or deviating from the paper feeding mechanism. In view of the many hidden dangers in the existing device, we urgently need to solve the above problems through a gravure printing device based on self-adjusting the center roller distance.

Utility Model Content

The purpose of the utility model is to provide a gravure printing device based on autonomous adjustment of the center roller distance, so as to solve the problems raised in the above background technology and to address the above problems.

To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a gravure printing device based on autonomous adjustment of the center roller gap, comprising a paper feeder with a bottom plate and a top thereof for printing paper, a gravure printing unit, a conveying unit and an adjustment and laminating mechanism, a paper delivery unit is arranged between the paper feeder and the gravure printing unit, an adjustment and laminating mechanism for preventing paper from being offset is arranged inside the paper feeder, and a roller gap adjustment transmission mechanism for adjusting the roller gap is arranged inside the gravure printing unit.

Preferably, the adjustment and fitting mechanism includes a mounting frame, which is fixedly installed inside the paper feeder, a telescopic rod is movably installed on the top of the mounting frame, a movable frame is provided at the output end of the telescopic rod, a connecting rod is fixedly installed on the outside of the movable frame, and a pressure plate is fixedly installed on the side of the connecting rod away from the movable frame, so as to press the transmitted paper and prevent it from warping or deviating from the paper delivery unit.

Preferably, the movable frame and the mounting frame are rotatably mounted, and the pressing plate is in contact with the top of the paper delivery unit, so as to improve the limiting effect on the paper.

Preferably, the roller pitch adjustment transmission mechanism includes a roller pitch adjustment component for adjusting the roller pitch, a first motor is arranged in the roller pitch adjustment component, a threaded rod is fixedly mounted on the output shaft of the first motor, a movable plate is threadedly mounted on the external surface of the threaded rod, a connecting frame is fixedly mounted on the external surface of the movable plate, an impression roller is rotatably mounted on the internal surface of the connecting frame, a first bevel gear is fixedly mounted on the external surface of the impression roller, and a connecting sleeve is fixedly mounted on the external surface of the connecting frame, so as to dynamically adjust the distance between the impression roller and the gravure roller according to actual processing conditions to improve the gravure printing effect.

Preferably, a limiting slide groove for sliding of the movable plate is provided inside the gravure printing unit to prevent the movable plate from rotating and ensure the stability of movement. The connecting frame is slidably installed inside the gravure printing unit to improve the subsequent printing and forming effect.

Preferably, the roller spacing adjustment transmission mechanism also includes a transmission assembly for driving the roller, a driving motor is provided in the transmission assembly, a gravure cylinder is fixedly mounted on the output shaft of the driving motor, a second bevel gear is fixedly mounted on the outside of the gravure cylinder, a spline shaft is rotatably mounted inside the gravure printing unit, a third bevel gear is fixedly mounted on the outside of the spline shaft, and a fourth bevel gear is rotatably mounted inside the connecting sleeve, so as to facilitate the transmission of the set impression cylinder and the gravure cylinder to perform gravure printing on the transmitted paper.

Preferably, the third bevel gear is meshed with the second bevel gear, a sliding sleeve is fixedly installed on the outside of the fourth bevel gear, and the fourth bevel gear is rotatably installed inside the connecting sleeve through the external sliding sleeve and slidably installed on the outside of the spline shaft, and the fourth bevel gear is meshed with the first bevel gear, so as to facilitate the opposite rotation of the impression roller and the gravure roller to improve the gravure printing on the paper.

Compared with the prior art, the utility model provides a gravure printing device based on self-adjusting center roller distance, which has the following beneficial effects:

1. The gravure printing device based on self-adjusting the center roller distance can press the transmitted paper to avoid the phenomenon of warping or deviation from the paper feeding unit by setting an adjustment and laminating mechanism inside the paper feeder to avoid the paper from deflecting, thereby ensuring the efficiency and effectiveness of the gravure printing work;

2. The gravure printing device based on self-adjusting the center roller distance has a roller distance adjustment transmission mechanism for adjusting the roller distance set in the gravure printing unit. During use, the distance between the impression roller and the gravure roller can be dynamically adjusted according to the actual printing processing conditions, and the impression roller and the gravure roller can be made to rotate in opposite directions, so as to improve the gravure printing of paper and enhance the practicality of the device.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a schematic diagram of the three-dimensional structure of the gravure printing device based on the self-adjustment of the center roller distance;

FIG2 is a second schematic diagram of the three-dimensional structure of the gravure printing device based on the self-adjustment of the center roller distance;

FIG3 is a schematic diagram of the three-dimensional structure of the roller distance adjustment component in the gravure printing device based on the self-adjustment of the center roller distance;

FIG4 is a second schematic diagram of the three-dimensional structure of the roller distance adjustment component in the gravure printing device based on the self-adjustment of the center roller distance;

FIG5 is a schematic diagram of the three-dimensional structure of the transmission assembly in the gravure printing device based on the self-adjustment of the center roller distance;

FIG6 is a second schematic diagram of the three-dimensional structure of the transmission assembly in the gravure printing device based on the self-adjustment of the center roller distance;

FIG7 is a schematic diagram of a partially disassembled structure of a transmission assembly in the gravure printing device based on self-adjusting center roller distance;

FIG8 is a schematic diagram of the three-dimensional structure of the adjustment lamination mechanism in the gravure printing device based on the self-adjustment of the center roller distance.

In the figure: 1, bottom plate; 2, paper feeder; 21, paper delivery unit; 3, gravure printing unit; 4, transmission unit; 5, paper collection machine; 6, adjustment and fitting mechanism; 61, mounting frame; 62, telescopic rod; 63, movable frame; 64, connecting rod; 65, pressing plate; 7, roller distance adjustment transmission mechanism; 71, roller distance adjustment assembly; 711, first motor; 712, threaded rod; 713, movable plate; 714, connecting frame; 715, impression roller; 716, first bevel gear; 717, connecting sleeve; 72, transmission assembly; 721, driving motor; 722, gravure roller; 723, second bevel gear; 724, spline shaft; 725, third bevel gear; 726, fourth bevel gear.

DETAILED DESCRIPTION

In order to further understand the features, technical means, specific objectives and functions of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

Embodiment 1: Please refer to Figures 1 to 7. The utility model provides a technical solution: a gravure printing device based on autonomous adjustment of the center roller distance, including a bottom plate 1 and a paper feeder 2 on top of which prints paper, a gravure printing unit 3, a conveying unit 4 and an adjustment and laminating mechanism 6, a paper delivery unit 21 is arranged between the paper feeder 2 and the gravure printing unit 3, an adjustment and laminating mechanism 6 is arranged inside the paper feeder 2 to prevent the paper from being offset, and a roller distance adjustment transmission mechanism 7 for adjusting the roller distance is arranged inside the gravure printing unit 3.

Furthermore, the roller pitch adjustment transmission mechanism 7 includes a roller pitch adjustment component 71 for adjusting the roller pitch, and a first motor 711 is arranged in the roller pitch adjustment component 71, a threaded rod 712 is fixedly mounted on the output shaft of the first motor 711, a movable plate 713 is threadedly mounted on the outer side of the threaded rod 712, a connecting frame 714 is fixedly mounted on the outer side of the movable plate 713, an impression roller 715 is rotatably mounted inside the connecting frame 714, a first bevel gear 716 is fixedly mounted on the outer side of the impression roller 715, and a connecting sleeve 717 is fixedly mounted on the outer side of the connecting frame 714, so as to dynamically adjust the distance between the impression roller 715 and the gravure roller 722 according to actual processing conditions to improve the gravure printing effect.

Furthermore, a limiting slide groove is provided inside the gravure printing unit 3 for the movable plate 713 to slide, so as to prevent the movable plate 713 from rotating and ensure the stability of movement. The connecting frame 714 is slidably installed inside the gravure printing unit 3 to improve the subsequent printing and forming effect.

Furthermore, the roller spacing adjustment transmission mechanism 7 also includes a transmission assembly 72 for driving the roller, a driving motor 721 is arranged in the transmission assembly 72, a gravure cylinder 722 is fixedly mounted on the output shaft of the driving motor 721, a second bevel gear 723 is fixedly mounted on the outside of the gravure cylinder 722, a spline shaft 724 is rotatably mounted inside the gravure printing unit 3, a third bevel gear 725 is fixedly mounted on the outside of the spline shaft 724, and a fourth bevel gear 726 is rotatably mounted inside the connecting sleeve 717, so as to facilitate the transmission of the set impression cylinder 715 and the gravure cylinder 722 to perform gravure printing on the transmitted paper.

Furthermore, the third bevel gear 725 is meshed with the second bevel gear 723, and a sliding sleeve is fixedly installed on the outside of the fourth bevel gear 726. The fourth bevel gear 726 is rotatably installed inside the connecting sleeve 717 through the external sliding sleeve, and is slidably installed on the outside of the spline shaft 724. The fourth bevel gear 726 is meshed with the first bevel gear 716, so as to make the impression roller 715 and the gravure roller 722 rotate in opposite directions to improve the gravure printing on the paper.

Embodiment 2: Please refer to Figure 8, and in combination with Embodiment 1, it is further obtained that the adjustment fitting mechanism 6 includes a mounting frame 61, the mounting frame 61 is fixedly installed inside the paper feeder 2, a telescopic rod 62 is movably installed on the top of the mounting frame 61, a movable frame 63 is provided at the output end of the telescopic rod 62, a connecting rod 64 is fixedly installed on the outside of the movable frame 63, and a pressure plate 65 is fixedly installed on the side of the connecting rod 64 away from the movable frame 63, so as to facilitate the pressure on the transmitted paper to prevent it from tilting or deviating from the paper delivery unit 21.

Furthermore, the movable frame 63 is rotatably mounted on the mounting frame 61, and the pressing plate 65 is in contact with the top of the paper delivery unit 21, so as to improve the limiting effect on the paper.

During actual operation, when relevant printing work needs to be carried out, the paper feeder 2 can be opened first, and the paper inside it can be transferred out from the paper delivery unit 21. In order to avoid the problem that the paper is lifted up or deviated from the paper delivery unit 21 during the transmission process, the telescopic rod 62 can be opened and the movable frame 63 can be pushed to make the set connecting rod 64 rotate accordingly, so that the set pressure plate 65 can contact the paper on the top of the paper delivery unit 21. After contact, the paper can be pressed to make the paper fit the surface of the paper delivery unit 21 to avoid the phenomenon of paper lifting. After that, after it is transferred to the inside of the gravure printing unit 3, in order to ensure the gravure printing effect of the paper, the distance between the impression roller 715 and the gravure roller 722 can be dynamically adjusted according to work requirements, the first motor 711 can be turned on to make the threaded rod 712 rotate, and under the action of the limiting slide groove inside the gravure printing unit 3, the set movable The plate 713 moves accordingly, so that the connecting frame 714 moves synchronously, thereby causing the impression cylinder 715 to move downward or upward, so that the distance between the impression cylinder 715 and the gravure cylinder 722 changes. At the same time, the connecting sleeve 717 can cause the fourth bevel gear 726 to move synchronously outside the spline shaft 724. After the adjustment is completed, the driving motor 721 can be turned on to rotate the gravure cylinder 722, and at the same time, the second bevel gear 723 can be rotated, so that the third bevel gear 725 meshing therewith can be rotated, so that the spline shaft 724 can be rotated, so that the fourth bevel gear 726 can be rotated synchronously, so that the first bevel gear 716 can be rotated, and the impression cylinder 715 can be rotated. Under the joint action of the impression cylinder 715 and the gravure cylinder 722, the fed paper can be gravure printed, and the printed paper will be conveyed to the inside of the paper collection machine 5 through the conveying unit 4 for collection.

The above embodiments only express one or several implementation methods of the present invention, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the present invention. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention shall be based on the attached claims.

Claims (7)

1. The utility model provides a gravure printing device based on independently adjust center roll spacing, carries out paper feeder (2), intaglio printing unit (3), transfer unit (4) and adjustment laminating mechanism (6) of printing work to paper including bottom plate (1) and top thereof, its characterized in that: be provided with between paper feeder (2) and intaglio printing unit (3) transfer unit (21), the inside adjustment laminating mechanism (6) that avoids the paper to appear squinting that is provided with of paper feeder (2), be provided with in intaglio printing unit (3) and adjust drive mechanism (7) to the roll gap.

2. An intaglio printing device based on autonomous central adjustment of the roll gap according to claim 1, characterized in that: the adjusting and laminating mechanism (6) comprises a mounting frame (61), the mounting frame (61) is fixedly mounted inside the paper feeder (2), a telescopic rod (62) is movably mounted at the top of the mounting frame (61), a movable frame (63) is arranged at the output end of the telescopic rod (62), a connecting rod (64) is fixedly mounted outside the movable frame (63), and a pressing plate (65) is fixedly mounted on one side of the connecting rod (64) away from the movable frame (63).

3. An intaglio printing device based on autonomous central adjustment of the roll gap according to claim 2, characterized in that: the movable frame (63) is rotatably mounted with the mounting frame (61), and the pressing plate (65) is in contact with the top of the paper conveying unit (21).

4. An intaglio printing device based on autonomous central adjustment of the roll gap according to claim 1, characterized in that: the roll gap adjusting transmission mechanism (7) comprises a roll gap adjusting assembly (71) for adjusting the roll gap, a first motor (711) is arranged in the roll gap adjusting assembly (71), a threaded rod (712) is fixedly arranged on an output shaft of the first motor (711), a movable plate (713) is arranged on the external thread of the threaded rod (712), a connecting frame (714) is fixedly arranged on the external part of the movable plate (713), an impression cylinder (715) is rotatably arranged in the connecting frame (714), a first bevel gear (716) is fixedly arranged on the external part of the impression cylinder (715), and a connecting sleeve (717) is fixedly arranged on the external part of the connecting frame (714).

5. An intaglio printing device according to claim 4, characterized in that: limiting sliding grooves for sliding the movable plates (713) are formed in the gravure printing units (3), and the connecting frames (714) and the gravure printing units (3) are installed in a sliding mode.

6. An intaglio printing device according to claim 4, characterized in that: the roller spacing adjusting transmission mechanism (7) further comprises a transmission assembly (72) for driving the roller, a driving motor (721) is arranged in the transmission assembly (72), an intaglio cylinder (722) is fixedly arranged on an output shaft of the driving motor (721), a second bevel gear (723) is fixedly arranged outside the intaglio cylinder (722), a spline shaft (724) is rotatably arranged inside the intaglio printing unit (3), a third bevel gear (725) is fixedly arranged outside the spline shaft (724), and a fourth bevel gear (726) is rotatably arranged inside the connecting sleeve (717).

7. An intaglio printing device according to claim 6, characterized in that: the third bevel gear (725) is meshed with the second bevel gear (723), a sliding sleeve is fixedly arranged outside the fourth bevel gear (726), the fourth bevel gear (726) is rotatably arranged inside a connecting sleeve (717) through the sliding sleeve outside and is slidably arranged outside a spline shaft (724), and the fourth bevel gear (726) is meshed with the first bevel gear (716).