CN219312265U

CN219312265U - Gravure printing machine for printing plastic film

Info

Publication number: CN219312265U
Application number: CN202320197732.9U
Authority: CN
Inventors: 王丽娟
Original assignee: Tongxiang Xuanfeng Plastic Industry Co ltd
Current assignee: Tongxiang Xuanfeng Plastic Industry Co ltd
Priority date: 2023-02-03
Filing date: 2023-02-03
Publication date: 2023-07-07
Anticipated expiration: 2033-02-03

Abstract

The utility model discloses a gravure printing machine for printing plastic films, which comprises a gravure printing machine body and is characterized by comprising a first lead screw, a first rotary driving component, a first guide rod, a first sliding block, a second sliding block, a mounting block, a third sliding block and a second driving component. The printing cylinder can be replaced conveniently; the impression cylinder and the inking cylinder can be synchronously driven to move in opposite directions by the rotation of the first lead screw, so that the printing cylinders with different diameters can be replaced between the printing cylinder and the inking cylinder; the position of the doctor blade can be adjusted by the second drive element, and a new printing cylinder is contacted again after the printing cylinder is replaced.

Description

Gravure printing machine for printing plastic film

Technical Field

The utility model relates to the technical field of printing machines, in particular to an intaglio printing machine for printing plastic films.

Background

During the processing of plastic films, it is often necessary to use intaglio printing presses to print a letter or pattern on the plastic film. Intaglio printing presses are machines that use intaglio plates for printing, the graphic part of the plate being depressed and the blank being on the same plane as the outer circle of the plate cylinder. When the intaglio printing press prints, the whole plate surface of the plate cylinder is inked, the ink of the blank part on the plate surface is scraped by a doctor blade, the ink of the image-text part is left, then the plastic film is passed through, the impression cylinder is used for impressing on the back surface of the plastic film, the ink of the concave part is directly transferred onto the plastic film, and finally the plastic film is rolled by a rolling part.

When different patterns or characters are stamped, the printing cylinder with the intaglio plate needs to be replaced, most of the existing intaglio plate printers can only replace the printing cylinders with the same diameter, so that stamped frames are limited, and the requirement of product diversification cannot be met.

Disclosure of Invention

The application provides an intaglio printing press for printing plastic films, which can realize the replacement of printing cylinders with different diameters.

The gravure printing machine for printing the plastic film comprises a gravure printing machine body and is characterized by comprising a first lead screw, a first rotary driving part, a first guide rod, a first sliding block, a second sliding block, a mounting block, a third sliding block and a second driving part; the first screw rod is rotationally connected to the intaglio printing press body along the vertical direction, a section of thread is respectively arranged on the upper side and the lower side of the first screw rod, and the rotation directions of the two sections of threads are opposite; the first rotary driving part is arranged on the intaglio printing press body and used for driving the first lead screw to rotate; the first guide rod is fixedly arranged on the intaglio printing press body along the vertical direction; the two first sliding blocks are respectively connected with two ends of an impression cylinder in the intaglio printing press body in a rotating way, one of the first sliding blocks is connected with a first guide rod in a sliding way along the vertical direction, and the other first sliding block is arranged on the upper side of the first lead screw; the two second sliding blocks are respectively connected with two ends of an inking roller in the intaglio printing machine body in a rotating way, one of the second sliding blocks is connected with the first guide rod in a sliding way along the vertical direction, and the other second sliding block is arranged at the lower side of the first screw rod; the two mounting blocks are respectively connected with two ends of a printing cylinder in the intaglio printing press body in a rotating way, and the mounting blocks are detachably connected with the intaglio printing press body; in the vertical direction, the mounting block is positioned between the first sliding block and the second sliding block; the doctor blade in the intaglio printing press body is arranged on the third sliding block, and the third sliding block relatively slides to the intaglio printing press body; the second driving part is arranged on the intaglio printing press body and used for driving the third sliding block to slide.

Further, the gravure printing machine further comprises two first sliding grooves, the two first sliding grooves are formed in the gravure printing machine body, and the two mounting blocks are respectively and slidably connected in the two first sliding grooves.

Further, a limiting plate is arranged in the first sliding groove, a first groove is arranged in the first sliding groove, and the limiting plate is hinged to one end, close to the working position of the printing cylinder, of the first groove; the limiting plate comprises a second groove, a clamping block and a first spring, wherein the clamping block is connected in the second groove in a sliding mode, one end of the first spring is connected with the clamping block, and the other end of the first spring is connected with the bottom end of the second groove; the upper end of the first chute is provided with a clamping groove.

Further, the first rotation driving part includes a first motor for driving the first screw.

Further, the first rotation driving part further comprises a first gear and a second gear; the casing of the first motor is fixedly arranged on the intaglio printing press body, the first gear is fixedly arranged at the tail end of the output shaft of the first motor, the second gear is fixedly arranged at one end of the first screw rod, and the first gear is meshed with the second gear.

Further, the second driving part comprises a second lead screw and a hand-operated wheel; the second lead screw is rotationally connected to the intaglio printing press body and used for driving the third sliding block, and the hand crank wheel is fixedly connected to one end of the second lead screw.

To sum up, in the present application, an intaglio printing press for printing plastic films has the following advantages compared with the prior art:

(1) The printing cylinder can be replaced conveniently;

(2) The impression cylinder and the inking cylinder can be synchronously driven to move in opposite directions by the rotation of the first lead screw, so that the printing cylinders with different diameters can be replaced between the printing cylinder and the inking cylinder;

(3) The position of the doctor blade can be adjusted by the second drive element, and a new printing cylinder is contacted again after the printing cylinder is replaced.

Drawings

In order to better and clearly describe the technical solutions in the embodiments or the background of the present application, the following description will describe the drawings used in the embodiments or the background of the present application.

FIG. 1 is an overall construction view of a gravure printing machine for printing plastic films;

FIG. 2 is a front view of an intaglio printing press for printing plastic films;

FIG. 3 is a cross-sectional view taken along line A-A of FIG. 2;

FIG. 4 is an enlarged view of area A of FIG. 3;

FIG. 5 is a side view of an intaglio printing press for printing plastic films;

FIG. 6 is a cross-sectional view taken along line B-B of FIG. 5;

FIG. 7 is an enlarged view of region B of FIG. 6;

fig. 8 is an enlarged view of region C in fig. 3.

In the figure, 1, a gravure printing machine body; 2. an impression cylinder; 3. a doctor blade; 4. a printing cylinder; 5. an inking roller; 6. applying an ink box; 8. a first groove; 9. a limiting plate; 10. a second groove; 11. a clamping block; 12. a first spring; 14. a grip; 15. hand-operated wheels; 16. a mounting block; 17. a second slider; 18. a first slider; 19. a first guide bar; 20. a first lead screw; 21. a first rotation driving part; 22. a first motor; 23. a first gear; 24. a second gear; 25. a third slider; 26. a second driving part; 27. and a second lead screw.

Detailed Description

The following describes the embodiments of the present utility model further with reference to the attached drawings and examples; the following examples are illustrative of the utility model and are not intended to limit the scope of the utility model.

A gravure printing machine for printing plastic films includes a gravure printing machine body 1, a first lead screw 20, a first rotational driving part 21, a first guide bar 19, a first slider 18, a second slider 17, a mounting block 16, a third slider 25, and a second driving part 26.

Referring to fig. 1, 2, 3 and 4, the intaglio printing press body 1 includes an impression cylinder 2, a doctor blade 3, a printing cylinder 4, an inking cylinder 5 and an ink cartridge 6. The working principle of the intaglio printing press body 1 is prior art and will not be described here too much.

Referring to fig. 4, the first screw rod 20 is rotatably connected to the intaglio printing press body 1 along a vertical direction, and a section of threads is respectively provided on an upper side and a lower side of the first screw rod 20, and the rotation directions of the two sections of threads are opposite.

Referring to fig. 8, the first rotation driving part 21 is disposed on the intaglio printing press body 1 and is used for driving the first screw 20 to rotate. In one embodiment, the first rotation driving part 21 includes a first motor 22, a casing of the first motor 22 is fixedly disposed at the upper end of the intaglio printing press body 1, and an output shaft end of the first motor 22 is fixedly connected to the first screw 20 for rotation. By this arrangement, the first motor 22 drives the first screw 20 to rotate, so that the precision is high and the implementation is easy. In one embodiment, preferably, the first rotation driving part 21 further includes a first gear 23 and a second gear 24; the casing of the first motor 22 is fixedly arranged at the upper end of the intaglio printing press body 1, the first gear 23 is fixedly arranged at the tail end of an output shaft of the first motor 22, the second gear 24 is fixedly arranged on the first screw rod 20, and the first gear 23 is meshed with the second gear 24. By means of the arrangement, the first gear 23 and the second gear 24 are used for transmission, so that the transmission precision is high, and the application range is wide.

Referring to fig. 4, the first guide rod 19 is fixed on the intaglio printing press body 1 along a vertical direction. The number of the first sliders 18 is two, the left and right ends of the impression cylinder 2 are respectively rotatably connected to the two first sliders 18, and the rotation axis of the impression cylinder 2 is along the horizontal direction. One of the first sliding blocks 18 is connected to the first guide rod 19 in a sliding manner along the vertical direction; the other first slider 18 is provided with a screw nut which is in threaded fit with the upper side of the first screw 20, and is arranged on the upper side of the first screw 20 through the screw nut, and the first screw 20 can drive the first slider 18 to slide up and down through rotation.

Referring to fig. 4, there are two second sliders 17, two ends of the inking roller 5 are rotatably connected to the two second sliders 17, respectively, and the rotation axis of the inking roller 5 is along the horizontal direction. One of the second sliding blocks 17 is connected with the first guide rod 19 in a sliding manner along the vertical direction; the other second slider 17 is provided with a screw nut which is in threaded fit with the lower side of the first screw 20, and is arranged on the lower side of the first screw 20 through the screw nut, and the first screw 20 can drive the second slider 17 to slide up and down through rotation. Because of the difference of the screw threads on the upper and lower sides of the first screw 20, when the first screw 20 rotates, the sliding directions of the second slider 17 and the first slider 18 are opposite. Further, the ink-applying cartridge 6 is fixed between the two second sliders 17, and the ink-applying roller 5 applies ink from the ink-applying cartridge 6.

Referring to fig. 4, 5, 6 and 7, there are two mounting blocks 16, two ends of the printing cylinder 4 are rotatably connected to the two mounting blocks 16, the rotation axes of the printing cylinder 4 are along the horizontal direction, and the rotation axes of the impression cylinder 2, the inking cylinder 5 and the printing cylinder 4 are parallel to each other. The mounting block 16 is detachably attached to the intaglio printing press body 1. In one embodiment, the gravure printing machine further comprises two first sliding grooves, wherein the two first sliding grooves are formed in the gravure printing machine body 1, and the two mounting blocks 16 are respectively and slidably connected in the two first sliding grooves. So arranged, the printing cylinder 4 can be attached or detached through the first chute. Further, in each first chute, a limiting plate 9 and a first groove 8 are provided, the first groove 8 is located at the front end of the mounting block 16 when the printing cylinder 4 is in the working position, and the limiting plate 9 is hinged to one end of the first groove 8, which is close to the working position of the printing cylinder 4, and is used for limiting the mounting block 16. The limiting plate 9 comprises a second groove 10, a clamping block 11 and a first spring 12, the second groove 10 is opened towards the direction away from the hinging position of the limiting plate 9, the clamping block 11 is slidably connected in the second groove 10, one end of the first spring 12 is connected with the clamping block 11, the other end of the first spring is connected with the bottom end of the second groove 10, and under the action of the first spring 12, the front end of the clamping block 11 extends out of the second groove 10. The upper end of the first sliding groove is provided with a clamping groove, and the clamping block 11 can extend into the clamping groove to limit the rotation of the limiting plate 9, so as to limit the sliding of the mounting block 16. Further, a grip 14 is fixedly extended from the clamping block 11, and a worker can control the sliding of the clamping block 11 through the grip 14.

Referring to fig. 4, in the vertical direction, the mounting block 16 is located between the first slider 18 and the second slider 17. By setting the positions of the first slider 18 and the second slider 17 in the vertical direction, the distance from the impression cylinder 2 to the print cylinder 4 is made equal to the distance from the inking cylinder 5 to the print cylinder 4. When the first slider 18 and the second slider 17 slide synchronously, the impression cylinder 2 and the print cylinder 4 can simultaneously contact the surface of the print cylinder 4.

Referring to fig. 4, the doctor blade 3 of the intaglio printing press body 1 is disposed on the third slider 25, and the third slider 25 slides relatively to the intaglio printing press body 1 along a direction approaching or separating from the printing cylinder 4. The second driving part 26 is disposed on the intaglio printing press body 1 and is used for driving the third slider 25 to slide. In one embodiment, the second driving part 26 preferably comprises a second screw, a hand crank 15; the second screw is rotatably connected to the intaglio printing press body 1, a screw nut matched with the second screw is arranged in the third slider 25, and the third slider 25 is arranged on the second screw through the screw nut. The hand crank wheel 15 is fixedly connected to one end of the second screw rod, and a worker can rotate the second screw rod through the hand crank wheel 15 to control the doctor blade 3 to be close to or far away from the printing cylinder 4. By means of the arrangement, a worker can manually operate the doctor blade 3 to approach and attach the surface of the printing cylinder 4, the printing cylinder 4 with different sizes can be more suitable, and damage to the doctor blade 3 or the printing cylinder 4 can be avoided as much as possible.

The working process of the present utility model is briefly described below:

s1, when the printing cylinder 4 with different sizes needs to be replaced, the first motor 22 drives the first lead screw 20 to rotate, so that the inking cylinder 5 and the impression cylinder 2 are far away from the printing cylinder 4;

s2, driving the doctor blade 3 to be far away from the printing cylinder 4 through the hand-operated wheel 15;

s3, sliding the mounting block 16 out of the first sliding groove, namely detaching the printing cylinder 4;

s4, loading a new mounting block 16 into the first chute, namely loading a new printing cylinder 4;

s5, driving the inking cylinder 5, the impression cylinder 2 and the doctor blade 3 to return to the working position.

Claims

1. An intaglio printing press for printing plastic films, comprising an intaglio printing press body (1), characterized by comprising a first screw (20), a first rotary driving member (21), a first guide rod (19), a first slider (18), a second slider (17), a mounting block (16), a third slider (25), a second driving member (26);

the first lead screw (20) is rotationally connected to the intaglio printing press body (1) along the vertical direction, a section of thread is respectively arranged on the upper side and the lower side of the first lead screw (20), and the rotation directions of the two sections of threads are opposite; the first rotary driving part (21) is arranged on the intaglio printing press body (1) and is used for driving the first screw rod (20) to rotate; the first guide rod (19) is fixedly arranged on the intaglio printing press body (1) along the vertical direction; two first sliding blocks (18) are respectively connected with two first sliding blocks (18) in a rotating mode at two ends of an impression cylinder (2) in the intaglio printing press body (1), one first sliding block (18) is connected with a first guide rod (19) in a sliding mode along the vertical direction, and the other first sliding block (18) is arranged on the upper side of a first lead screw (20); two second sliding blocks (17) are arranged, two ends of an inking roller (5) in the intaglio printing press body (1) are respectively connected with the two second sliding blocks (17) in a rotating mode, one second sliding block (17) is connected with the first guide rod (19) in a sliding mode along the vertical direction, and the other second sliding block (17) is arranged on the lower side of the first lead screw (20); two mounting blocks (16) are arranged, two ends of a printing cylinder (4) in the intaglio printing press body (1) are respectively connected with the two mounting blocks (16) in a rotating mode, and the mounting blocks (16) are detachably connected with the intaglio printing press body (1); in the vertical direction, the mounting block (16) is located between the first slider (18) and the second slider (17); a doctor blade (3) in the intaglio printing press body (1) is arranged on the third sliding block (25), and the third sliding block (25) relatively slides to the intaglio printing press body (1); the second driving part (26) is arranged on the intaglio printing press body (1) and is used for driving the third sliding block (25) to slide.

2. Intaglio printing machine for printing plastic films according to claim 1 characterized in that it further comprises two first runners, both of which are provided on said intaglio printing machine body (1), in which two of said mounting blocks (16) are slidingly connected, respectively.

3. Intaglio printing machine for printing plastic films according to claim 2 characterized in that a limiting plate (9) is provided in said first chute, a first groove (8) is provided in said first chute, said limiting plate (9) being hinged to one end of said first groove (8) close to the working position of said printing cylinder (4); the limiting plate (9) comprises a second groove (10), a clamping block (11) and a first spring (12), wherein the clamping block (11) is slidably connected in the second groove (10), one end of the first spring (12) is connected with the clamping block (11), and the other end of the first spring is connected with the bottom end of the second groove (10); the upper end of the first chute is provided with a clamping groove.

4. Intaglio printing machine for printing plastic films according to claim 1 characterized in that said first rotary drive means (21) comprise a first motor (22), said first motor (22) being intended to drive said first screw (20).

5. Intaglio printing machine for printing plastic films according to claim 4 characterized in that said first rotary drive means (21) further comprise a first gear (23), a second gear (24); the casing of the first motor (22) is fixedly arranged on the intaglio printing press body (1), the first gear (23) is fixedly arranged at the tail end of an output shaft of the first motor (22), the second gear (24) is fixedly arranged at one end of the first screw rod (20), and the first gear (23) is meshed with the second gear (24).

6. Intaglio printing machine for printing plastic films according to claim 1 characterized in that said second driving means (26) comprise a second screw, a hand crank (15); the second lead screw is rotationally connected to the intaglio printing press body (1) and used for driving the third sliding block (25), and the hand crank wheel (15) is fixedly connected to one end of the second lead screw.