Drum-type screen printing machine

Abstract

The utility model belongs to the technical field of printing, and discloses a drum-type screen printing machine which comprises supporting mechanisms and further comprises a printing mechanism which is arranged between the supporting mechanisms and used for semi-shielding lower roll printing paper products and cleaning residual ink, a conveying mechanism for conveying to-be-printed products to be printed is arranged below the printing mechanism, and the supporting mechanisms comprise supporting frames. Two supporting plates are symmetrically installed on the top of the supporting frame, two second supports are symmetrically arranged on one side of one supporting plate, fixing plates are installed on the tops of the supporting plates, and a first support is installed on one side of one fixing plate. According to the drum-type screen printing machine, printing quality is guaranteed by scraping and cleaning residual ink after printing, environment pollution caused by splashing of the residual ink is avoided by means of semi-shielding of the outside of the screen drum, and printing materials are effectively saved and production cost is reduced by means of facilities for scraping and recycling the residual ink.

Description

Technical Field

[0001] This utility model belongs to the field of printing technology, and in particular relates to a rotary screen printing machine. Background Technology

[0002] A screen printing machine is a machine that uses a screen printing plate to apply printing. It belongs to the category of printing machines and is used to print text and images. It is a general term for machines or equipment used to produce printed materials. Screen printing machines are a representative type of printing equipment among stencil printing machines. In addition to silk, the materials used to make screens can also be nylon, copper, steel, or stainless steel wire. They can be divided into flat screen printing machines, curved screen printing machines, rotary screen printing machines, and rotary screen printing machines.

[0003] Existing rotary screen printing machines leave residual ink on the outside of the screen after each printing cycle. If this residual ink is not treated, it will affect the quality of the next printing. Furthermore, the ink may splatter when the screen rotates. Therefore, a new device needs to be designed. Utility Model Content

[0004] The purpose of this invention is to provide a rotary screen printing machine to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solutions:

[0006] A rotary screen printing machine includes a support mechanism and a printing mechanism disposed between the support mechanisms for printing paper under semi-shielded conditions and cleaning residual ink. A transmission mechanism is disposed below the printing mechanism to transport the paper to be printed.

[0007] The printing mechanism includes an application cylinder, a semi-circular shield above the application cylinder, a doctor blade installed on one side of the bottom of the semi-circular shield, a first motor at one end of the application cylinder, a fixed shaft inside the application cylinder, a doctor blade installed at the bottom of the fixed shaft, and an ink transfer block installed on one side of the fixed shaft, the ink transfer block being adjacent to the side directly below the doctor blade.

[0008] The transmission mechanism includes two symmetrically arranged second motors. A drive roller is installed at the output end of the second motor. A driven roller is arranged on one side of the drive roller. A support roller is arranged between the drive roller and the driven roller. A conveyor belt is installed on the drive roller, the driven roller and the support roller. A printing roller is arranged between the two conveyor belts.

[0009] Furthermore: the support mechanism includes a support frame, two support plates are symmetrically installed on the top of the support frame, two second supports are symmetrically arranged on one side of one of the support plates, a fixing plate is installed on the top of the support plate, and a first support is installed on one side of one of the fixing plates.

[0010] Furthermore, the two ends of the semicircular shield are respectively bolted to the fixing plate, and the semicircular shield is made of 204 stainless steel.

[0011] Furthermore, the printing roller, the driving roller, the driven roller, and the support roller are respectively connected to the support plate bearing.

[0012] Furthermore: both ends of the printing roller are connected to the semi-circular shield bearing, and the printing roller is connected to the first motor flange.

[0013] Furthermore: the fixed shaft is bolted to the support mechanism, the printing roller is connected to the fixed shaft bearing, and the ink transfer block and the doctor blade are respectively snapped to the fixed shaft.

[0014] Compared with the prior art, the beneficial effects of the present invention are:

[0015] 1. The printing quality is ensured by setting up a function to scrape and clean residual ink after printing;

[0016] 2. By setting up a semi-shielded exterior for the mesh cylinder, residual ink splashing and environmental pollution are avoided;

[0017] 3. By using facilities to scrape off and reuse residual ink, printing materials are effectively saved and production costs are reduced. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of a rotary screen printing machine according to the present invention;

[0019] Figure 2 This is an isometric view of the support mechanism of the rotary screen printing machine described in this utility model;

[0020] Figure 3 This is a schematic diagram of the printing mechanism structure of a rotary screen printing machine according to the present invention;

[0021] Figure 4 This is an isometric view of the transmission mechanism of a roller screen printing machine according to the present invention.

[0022] In the attached drawings, the following are the reference numerals: 101, support frame; 102, support plate; 103, second support; 104, fixing plate; 105, first support; 201, printing roller; 202, semi-circular shield; 203, doctor blade; 204, first motor; 205, fixed shaft; 206, doctor blade; 207, ink transfer block; 301, second motor; 302, driving roller; 303, driven roller; 304, support roller; 305, conveyor belt; 306, printing roller. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Please see Figure 1-Figure 4 A rotary screen printing machine includes a support mechanism and a printing mechanism disposed between the support mechanisms for printing paper under semi-shielded conditions and cleaning residual ink. A transmission mechanism is disposed below the printing mechanism to transport the paper to be printed.

[0025] In this embodiment: the support mechanism includes a support frame 101, two support plates 102 are symmetrically installed on the top of the support frame 101, two second supports 103 are symmetrically arranged on one side of one of the support plates 102, a fixing plate 104 is installed on the top of the support plate 102, a first support 105 is installed on one side of one of the fixing plates 104, the support frame 101 fixes the whole, the support plate 102 mainly supports the printing roller 306, the driving roller 302, the driven roller 303 and the support roller 304, so that they can stably drive the conveyor belt 305, and the fixing plate 104 supports and fixes the semi-circular shield 202, the printing roller 201 and the fixing shaft 205;

[0026] In this embodiment: the printing mechanism includes an application cylinder 201, a semi-circular shield 202 is provided above the application cylinder 201, a doctor blade 203 is installed on one side of the bottom of the semi-circular shield 202, a first motor 204 is provided at one end of the application cylinder 201, a fixed shaft 205 is provided inside the application cylinder 201, a doctor blade 206 is installed at the bottom of the fixed shaft 205, an ink transfer block 207 is installed on one side of the fixed shaft 205, the ink transfer block 207 is adjacent to the side directly below the doctor blade 203, both ends of the semi-circular shield 202 are bolted to a fixed plate 104, the semi-circular shield 202 is made of 204 stainless steel, both ends of the application cylinder 201 are connected to the bearings of the semi-circular shield 202, and the application cylinder 201 is connected to the first motor 204. The flange is connected, the fixed shaft 205 is bolted to the support mechanism, the printing roller 201 is bearing connected to the fixed shaft 205, the ink transfer block 207 and the doctor blade 206 are respectively snapped to the fixed shaft 205, the first motor 204 rotates under the fixed support of the first support 105 and drives the printing roller 201 to rotate under the support of the fixed plate 104, the doctor blade 206 scrapes the ink on the ink transfer block 207 through the mesh of the printing roller 201 to the outer surface of the printing roller 201 to cooperate with the printing roller 306 directly below to print the substrate, the doctor blade 203 scrapes off the residual ink on the surface of the printing roller 201, and the ink is collected and then absorbed and reused by the ink transfer block 207 through the mesh of the printing roller 201;

[0027] In this embodiment: the transmission mechanism includes two symmetrically arranged second motors 301. A drive roller 302 is installed at the output end of the second motor 301. A driven roller 303 is arranged on one side of the drive roller 302. A support roller 304 is arranged between the drive roller 302 and the driven roller 303. A conveyor belt 305 is installed on the drive roller 302, the driven roller 303 and the support roller 304. A printing roller 306 is arranged between the two conveyor belts 305. The printing roller 306, the drive roller 302, the driven roller 303 and the support roller 304 are respectively connected to the bearings of the support plate 102. The printed material is placed on the conveyor belt 305. The second motor 301 rotates under the fixed support of the second support 103, driving the drive roller 302 to rotate under the support of the support frame 101 and the support plate 102. The drive roller 302 pushes the conveyor belt 305 to move the printed material under the support of the driven roller 303 and the support roller 304.

[0028] Working principle: The substrate is placed on the conveyor belt 305. The second motor 301 rotates under the fixed support of the second support 103, driving the drive roller 302 to rotate under the support of the support frame 101 and the support plate 102. The drive roller 302 pushes the conveyor belt 305 to move the substrate under the support of the driven roller 303 and the support roller 304. The first motor 204 rotates under the fixed support of the first support 105, driving the printing roller 201 to rotate under the support of the fixed plate 104. Under the fixed support of the fixed shaft 205, the doctor blade 206 scrapes the ink on the ink transfer block 207 through the mesh of the printing cylinder 201 to the outer surface of the printing cylinder 201, and works with the printing roller 306 directly below to print on the substrate. The semi-circular shield 202, supported and fixed by the fixed plate 104, scrapes off the residual ink on the surface of the printing cylinder 201 through the doctor blade 203 on one side of the bottom. After the ink is collected, it is absorbed and reused by the ink transfer block 207 through the mesh of the printing cylinder 201.

[0029] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A rotary screen printing machine, comprising a support mechanism, characterized in that: It also includes a printing mechanism disposed between the support mechanisms for printing paper under semi-shielded conditions and cleaning residual ink, and a transmission mechanism for conveying the paper to be printed is disposed below the printing mechanism. The printing mechanism includes an application cylinder (201), a semi-circular shield (202) is provided above the application cylinder (201), a doctor blade (203) is installed on one side of the bottom of the semi-circular shield (202), a first motor (204) is provided at one end of the application cylinder (201), a fixed shaft (205) is provided inside the application cylinder (201), a doctor blade (206) is installed at the bottom of the fixed shaft (205), an ink transfer block (207) is installed on one side of the fixed shaft (205), and the ink transfer block (207) is located directly below the doctor blade (203). The transmission mechanism includes two symmetrically arranged second motors (301), with a drive roller (302) installed at the output end of each second motor (301). A driven roller (303) is arranged on one side of the drive roller (302), and a support roller (304) is arranged between the drive roller (302) and the driven roller (303). A conveyor belt (305) is installed on the drive roller (302), the driven roller (303), and the support roller (304), and a printing roller (306) is arranged between the two conveyor belts (305).

2. The rotary screen printing machine according to claim 1, characterized in that: The support mechanism includes a support frame (101), on which two support plates (102) are symmetrically installed. Two second supports (103) are symmetrically arranged on one side of one of the support plates (102). A fixing plate (104) is installed on the top of the support plate (102), and a first support (105) is installed on one side of one of the fixing plates (104).

3. A rotary screen printing machine according to claim 2, characterized in that: The two ends of the semicircular shield (202) are respectively bolted to the fixing plate (104), and the semicircular shield (202) is made of 204 stainless steel.

4. A rotary screen printing machine according to claim 2, characterized in that: The printing roller (306), the driving roller (302), the driven roller (303) and the support roller (304) are respectively connected to the bearing of the support plate (102).

5. A rotary screen printing machine according to claim 1, characterized in that: The printing roller (201) is connected to the bearings of the semi-circular shield (202) at both ends, and the printing roller (201) is connected to the flange of the first motor (204).

6. A rotary screen printing machine according to claim 1, characterized in that: The fixed shaft (205) is bolted to the support mechanism, the printing roller (201) is bearing-connected to the fixed shaft (205), and the ink transfer block (207) and the doctor blade (206) are respectively snap-fitted to the fixed shaft (205).

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