CN214492020U

CN214492020U - Screen printing device

Info

Publication number: CN214492020U
Application number: CN202120313546.8U
Authority: CN
Inventors: 李园
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-02-04
Filing date: 2021-02-04
Publication date: 2021-10-26
Anticipated expiration: 2031-02-04

Abstract

The utility model provides a screen printing device, which comprises a frame and a cross bracing channel steel fixedly arranged on the frame, wherein a hydraulic oil cylinder and a screen rubber roller arranged on the hydraulic oil cylinder through a rubber roller adjusting component are fixedly arranged on the cross bracing channel steel; a screen mesh plate roller which is positioned below the screen rubber roller and matched with the screen rubber roller is arranged on the frame; the frame is also provided with a worm gear reducer connected with the screen plate mesh roller, and the worm gear reducer is connected with a rotating motor; the frame is also provided with an offset printing mechanism and a steel roller matched with the offset printing mechanism, and the steel roller is connected with a power motor; the condition that the plane printing mode adopted by the existing screen printer cannot adapt to the paper moving path in offset printing is improved.

Description

Screen printing device

Technical Field

The utility model relates to a printing machine technical field, concretely relates to screen printing device.

Background

The offset press is one of the offset presses, the printing picture and text is printed on the blanket cylinder from the printing plate first while printing, then transfer to the paper by the blanket cylinder, can be divided into the printing machine of the single color, double-colored, four-colored and multi-color according to the printing color number finished by a paper feed; according to the maximum breadth of the paper to be printed, the paper can be divided into small offset printing machines, six-opening, four-opening, split and full-paper printing machines; and the mechanism for inking the paper surface after inking by the plate cylinder is an intaglio printing press.

Because offset press, gravure press can produce different printing content in the process of printing and scribbling the china ink, need carry out screen printing first under the circumstances that has the demand, then carry out offset printing in transferring to offset press to realize that two kinds of printing contents reflect on same paper simultaneously.

The screen printing machine in the prior art mostly adopts a plane screen printing mode, paper can only be printed on a large plane, but the screen printing machine cannot adapt to the mode of a paper moving path in offset printing in the preposed screen printing of continuous offset printing.

Disclosure of Invention

To the not enough that exists among the prior art, the utility model provides a screen printing device has solved the problem that the plane printing mode that current screen printing machine adopted can not adapt to the paper removal route in the offset printing.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a screen printing device comprises a frame and a cross support channel steel fixedly arranged on the frame, wherein a hydraulic oil cylinder and a screen rubber roller arranged on the hydraulic oil cylinder through an adjusting rubber roller assembly are fixedly arranged on the cross support channel steel;

a screen mesh plate roller which is positioned below the screen rubber roller and matched with the screen rubber roller is arranged on the frame;

the frame is also provided with a worm gear reducer connected with the screen plate mesh roller, and the worm gear reducer is connected with a rotating motor;

still install the offset printing mechanism and rather than the complex steel roller in the frame, be connected with motor power on the steel roller.

Preferably, the offset printing mechanism comprises a support frame fixed on the machine frame, a printing support and a printing roller which is rotatably arranged on the printing support and matched with the steel roller are arranged on the support frame;

the support frame mainly comprises a transverse plate and a vertical plate fixedly connected to the tail end of the transverse plate to form a T-shaped structure;

an upper sliding plate guide rail is arranged on the upper side surface of the transverse plate, and a lower sliding plate guide rail is arranged on the lower side surface of the transverse plate;

the upper sliding plate guide rail is provided with an ink homogenizing assembly, and the lower sliding plate guide rail is provided with an ink worm wheel adjusting assembly;

an upper air cylinder used for pushing the ink homogenizing assembly to be close to or far away from the printing roller is arranged on the vertical plate;

and the vertical plate is also provided with a lower cylinder for pushing the ink worm gear adjusting assembly and the ink homogenizing assembly to synchronously slide.

Preferably, the ink equalizing assembly comprises an ink frame slidably mounted on the upper sliding plate guide rail, an ink roller and a driving ceramic ink transfer roller which are rotatably mounted on the ink frame, and the ink roller and the driving ceramic ink transfer roller are in synchronous transmission connection through mutually meshed helical gear sets;

one end of the driving ceramic ink transfer roller is connected with an offset printing motor;

and a scraper adjusting component matched with the driving ceramic ink transfer roller is arranged on the ink rack.

Preferably, the scraper adjusting assembly comprises a scraper support fixedly mounted on the ink rack and a scraper group mounted on the scraper support, and the scraper support is further provided with a scale adjuster for adjusting the adjusting distance of the scraper group;

the scraper group is used for uniformly scraping the printing ink on the active ceramic ink transfer roller.

Preferably, the ink worm gear adjusting assembly comprises an internal guide roller assembly which is rotatably arranged on the frame and is matched with the inking roller, and a worm gear is fixedly arranged at one end of the internal guide roller assembly;

and an adjusting worm matched with the worm wheel is rotatably arranged on the rack.

Compared with the prior art, the utility model discloses following beneficial effect has:

the transverse support channel steel is arranged on the frame for bearing and supporting, then the hydraulic oil cylinder is fixedly arranged on the transverse support channel steel, and the upper and lower positions of the screen rubber roller are adjusted through the hydraulic oil cylinder, so that the screen rubber roller is close to the screen mesh plate roller to compress passing paper, and the paper is subjected to ink coating printing in the process of driving the screen mesh plate roller to rotate under the action of the rotating motor; therefore, the rotary printing process is formed, the paper can adapt to the adaptability of the offset press to the requirement of the paper moving path, and the feasibility of integrating two printing modes can be realized.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of the present invention;

FIG. 2 is a schematic structural diagram of an offset printing mechanism according to the present invention;

in the figure, the position of the upper end of the main shaft,

the device comprises a machine frame 1, a transverse support channel steel 2, a hydraulic oil cylinder 3, an adjusting rubber roller assembly 4, a screen rubber roller 5, a screen mesh plate roller 6, a worm gear reducer 7, a rotating motor 8, an offset printing mechanism 9, a support frame 91, a transverse plate 911, a vertical plate 912, a printing support 92, a printing roller 93, an upper sliding plate guide rail 94, a lower sliding plate guide rail 95, an ink equalizing assembly 96, an ink frame 961, an upper ink roller 962, a driving ceramic ink transfer roller 963, a helical gear set 964, an offset printing motor 965, an ink worm gear adjusting assembly 97, an internal guide roller assembly 971, a worm gear 972, an adjusting worm 973, an upper air cylinder 98, a lower air cylinder 99, a steel roller 10, a guide roller 11, a scraper adjusting assembly 12, a scraper support 121, a scraper set 122 and a scale adjuster 123.

Detailed Description

The present invention is further described with reference to the following drawings and specific embodiments so that those skilled in the art can better understand the present invention and can implement the present invention, but the embodiments are not to be construed as limiting the present invention.

As shown in fig. 1 and 2, an embodiment of the present invention provides a screen printing apparatus, including a frame 1 and a cross support channel 2 fixedly mounted on the frame 1, wherein a hydraulic cylinder 3 and a screen rubber roller 5 mounted on the hydraulic cylinder 3 through an adjusting rubber roller assembly 4 are fixedly mounted on the cross support channel 2; a screen mesh plate roller 6 which is positioned below the screen rubber roller 5 and matched with the screen rubber roller is arranged on the frame 1; a worm wheel 972 speed reducer 7 connected with the screen plate mesh plate roller 6 is further installed on the frame 1, and a rotating motor 8 is connected to the worm wheel 972 speed reducer 7; after the motor 8 is rotated to transmit power through the worm gear 972 speed reducer 7 to drive the screen mesh plate roller 6 to rotate, the paper is used for screen printing between the screen rubber roller 5 and the screen mesh plate roller 6, and specifically, the inking process of the screen mesh plate roller 6 still adopts an inking mechanism of a screen printing machine in the prior art, and details are not described herein; the rotary screen printing mode can adapt to the paper moving path in the subsequent re-offset printing.

Meanwhile, in order to enable the whole device to realize the continuous process of screen printing and offset printing, an offset printing mechanism 9 and a steel roller 10 matched with the offset printing mechanism are also arranged on the frame 1, and the steel roller 10 is connected with a power motor; the paper after screen printing is directly brought into the offset printing mechanism 9 under the action of the steel roller 10 for offset printing, so that the paper can be ensured to keep the same moving track in the transferring process, the situation of secondary positioning of the paper is avoided, and the printing efficiency is improved to a certain extent.

Specifically, the offset printing mechanism 9 comprises a support frame 91 fixed on the frame 1, wherein a printing support 92 and a printing roller 93 which is rotatably arranged on the printing support 92 and is matched with the steel roller 10 are arranged on the support frame 91; the supporting frame 91 mainly comprises a transverse plate 911 and a vertical plate 912 fixedly connected to the tail end of the transverse plate 911 to form a T-shaped structure; an upper sliding plate guide rail 94 is arranged on the upper side surface of the transverse plate 911, and a lower sliding plate guide rail 95 is arranged on the lower side surface of the transverse plate 911; an ink homogenizing assembly 96 is installed on the upper sliding plate guide rail 94, and an ink worm wheel adjusting assembly 97 is installed on the lower sliding plate guide rail 95; an upper air cylinder 98 for pushing the ink homogenizing assembly 96 to be close to or far away from the printing roller 93 is installed on the vertical plate 912; the vertical plate 912 is also provided with a lower air cylinder 99 for pushing the ink worm gear adjusting assembly 97 and the ink homogenizing assembly 96 to synchronously slide; the ink evening assembly 96 is pushed or pulled to be close to or far away from the printing roller 93 through the action of the upper air cylinder 98, the ink is applied when the ink evening assembly is close to the printing roller 93, and the ink is applied to the paper and printed when the ink evening assembly is far away from the printing roller 93; and through lower cylinder 99 to printing ink worm gear adjusting part 97 simultaneous movement to can adjust the printing ink degree of consistency on the assembly 96 of evenly inking, and can guarantee that the printing ink on the assembly 96 of evenly inking can be reliable scribble on printing roller 93, can produce pressure effect in the removal in-process, guarantee reliable contact transfer printing ink process, and guarantee the printing ink homogeneity on printing roller 93.

The paper needs to be guided in the moving process of screen printing and offset printing, a plurality of guide rollers for guiding the moving path of the paper are mounted on the support frame 91, and the independent operation or synchronous operation of the screen printing and the offset printing can be realized under the action of the guide rollers.

Specifically, the ink homogenizing assembly 96 comprises an ink frame 961 which is slidably mounted on the upper sliding plate guide rail 94, an ink roller 962 which is rotatably mounted on the ink frame 961, and a driving ceramic ink transfer roller 963, wherein the ink roller 962 and the driving ceramic ink transfer roller 963 are synchronously connected through a bevel gear set 964 which is meshed with each other in a transmission manner; one end of the driving ceramic ink transfer roller 963 is connected with a offset printing motor 965; after rotating with the active ceramic ink transfer roller 963 by the offset motor 965, the inking roller 962 applies ink to the active ceramic ink transfer roller 963; meanwhile, a blade adjusting assembly 12 matched with the driving ceramic ink transfer roller 963 is installed on the ink rack 961; in the process of forming uniform ink coverage by the inking roller 962 and the ink worm wheel adjusting assembly 97, the inking roller 962 and the active ceramic ink transfer roller 963 synchronously rotate through the bevel gear set 964, so that the ink on the inking roller 962 is uniformly covered on the active ceramic ink transfer roller 963, the whole process of uniformly inking the ink is realized, and finally, an ink layer with uniform thickness is formed on the printing roller 93; and the driving ceramic ink transfer rollers 963 are also constantly run by the offset motor 965 during the non-printing gap time, resulting in a process with continuous uniform inking.

In the process of ink transfer between the inking roller 962 and the active ceramic ink transfer roller 963, in order to ensure that the ink layer on the active ceramic ink transfer roller 963 is uniform, the ink layer on the active ceramic ink transfer roller 963 is limited and scraped by the scraper adjusting component 12; and the doctor blade adjusting assembly 12 includes a doctor blade bracket 121 fixedly installed on the ink frame 961 and a doctor blade group 122 installed on the doctor blade bracket 121, a scale adjuster 123 for adjusting an adjusting distance of the doctor blade group 122 is further installed on the doctor blade bracket 121, the doctor blade group 122 is used for uniformly applying and scraping ink on the active ceramic ink transfer roller 963, wherein the doctor blade group 122 and the scale adjuster 123 adopt a commonly-used prior art means in the existing offset printing machine, mainly adjust the uniformity degree of an ink layer on the active ceramic ink transfer roller 963, and measure the adjusting distance of the doctor blade group 122 through the scale adjuster 123 in the adjusting process.

Before the inking roller 962 coats the ink layer of the driving ceramic ink transfer roller 963, the thickness of the ink layer is adjusted mainly through the matching of the ink worm wheel adjusting component 97 and the inking roller 962, specifically, the ink worm wheel adjusting component 97 comprises an internal guide roller component 971 which is rotatably installed on the frame 1 and is matched with the inking roller 962, and a worm wheel 972 is fixedly installed at one end of the internal guide roller component 971; an adjusting worm 973 matched with the worm wheel 972 is rotatably arranged on the frame 1; the rotation of the built-in guide roller assembly 971 is driven by the cooperation of the adjustment worm 973 and the worm wheel 972, so that a continuous uniform inking process is formed.

In the explanation of the present embodiment, it should be noted that the terms "first", "second", and the like are only used for convenience of description and understanding, and do not limit the number of used, the installation order, or the importance of specific technical features, and meanwhile, the technical features specifically explained in the present embodiment are all technical means commonly used in the existing offset printing machine.

Finally, the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all of them should be covered in the claims of the present invention.

Claims

1. A screen printing apparatus, characterized in that: the screen printing plate rubber roller device comprises a rack (1) and a transverse support channel steel (2) fixedly installed on the rack (1), wherein a hydraulic oil cylinder (3) and a screen printing plate rubber roller (5) installed on the hydraulic oil cylinder (3) through an adjusting rubber roller assembly (4) are fixedly installed on the transverse support channel steel (2);

a screen mesh plate roller (6) which is positioned below the screen rubber roller (5) and matched with the screen rubber roller is arranged on the frame (1);

a worm gear reducer (7) connected with the screen mesh plate roller (6) is further installed on the frame (1), and a rotating motor (8) is connected to the worm gear reducer (7);

still install on frame (1) and offset printing mechanism (9) and rather than complex steel roller (10), be connected with motor power on steel roller (10).

2. The screen printing apparatus according to claim 1, wherein: the offset printing mechanism (9) comprises a support frame (91) fixed on the machine frame (1), a printing support (92) and a printing roller (93) which is rotatably arranged on the printing support (92) and matched with the steel roller (10) are arranged on the support frame (91);

the supporting frame (91) mainly comprises a transverse plate (911) and a vertical plate (912) fixedly connected to the tail end of the transverse plate (911) to form a T-shaped structure;

an upper sliding plate guide rail (94) is arranged on the upper side surface of the transverse plate (911), and a lower sliding plate guide rail (95) is arranged on the lower side surface of the transverse plate (911);

an ink homogenizing assembly (96) is installed on the upper sliding plate guide rail (94), and an ink worm wheel adjusting assembly (97) is installed on the lower sliding plate guide rail (95);

an upper air cylinder (98) used for pushing the ink homogenizing assembly (96) to be close to or far away from the printing roller (93) is mounted on the vertical plate (912);

and the vertical plate (912) is also provided with a lower air cylinder (99) for pushing the ink worm gear adjusting assembly (97) and the ink homogenizing assembly (96) to synchronously slide.

3. The screen printing apparatus according to claim 2, wherein: the support frame (91) is provided with a plurality of guide rollers for guiding a paper moving path.

4. A screen printing apparatus according to claim 2 or 3, wherein: the ink equalizing assembly (96) comprises an ink frame (961) which is slidably mounted on an upper sliding plate guide rail (94), and an ink roller (962) and a driving ceramic ink transfer roller (963) which are rotatably mounted on the ink frame (961), wherein the ink roller (962) and the driving ceramic ink transfer roller (963) are synchronously connected through a bevel gear set (964) which is meshed with each other in a transmission manner;

one end of the driving ceramic ink transfer roller (963) is connected with an offset printing motor (965);

and a scraper adjusting component (12) matched with the driving ceramic ink transfer roller (963) is arranged on the ink rack (961).

5. The screen printing apparatus according to claim 4, wherein: the scraper adjusting assembly (12) comprises a scraper support (121) fixedly mounted on the ink rack (961) and a scraper group (122) mounted on the scraper support (121), and a scale adjuster (123) for adjusting the adjusting distance of the scraper group (122) is further mounted on the scraper support (121);

the doctor blade set (122) is used for uniformly wiping ink on the active ceramic ink transfer roller (963).

6. The screen printing apparatus according to claim 4, wherein: the ink worm wheel adjusting assembly (97) comprises a built-in guide roller assembly (971) which is rotatably arranged on the frame (1) and is matched with the inking roller (962), and a worm wheel (972) is fixedly arranged at one end of the built-in guide roller assembly (971);

the frame (1) is rotatably provided with an adjusting worm (973) matched with the worm wheel (972).