Screen printing device

Abstract

The embodiment of the utility model belongs to the technical field of screen printing, and further relates to a screen printing device which comprises a scraper body, a plurality of blowing holes are formed in the bottom end of the scraper body, the scraper body is further connected with an air pipe, the air pipe is connected with the blowing holes, the air pipe is used for connecting the blowing holes with a compressed air source, and the compressed air source is connected with the scraper body. Therefore, the compressed air is ejected from the air blowing holes to clean the ink. The multiple blowing holes are formed in the bottom end of the scraper body and connected with the compressed air source through the air pipes, the compressed air source can convey compressed air to the blowing holes through the air pipes, the compressed air is sprayed out of the blowing holes to clean printing ink, and the problem of printing ink blocking is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of silk screen printing, and more specifically, to a silk screen printing device. Background Art

[0002] Silk screen printing is a commonly used printing method. It uses the principle of screen printing. The mesh holes in the graphic part of the printing plate can pass through the ink, while the mesh holes in the non-graphic part cannot. It is an important printing process and is widely used in various fields. The application fields of silk screen printing are very wide, including electronic products (such as electronic circuit boards, display screens, touch screens, etc.), medical devices, toys, clothing and textiles, advertising and logos, home decoration, automobiles and transportation, and packaging. Whether it is making product packaging, business cards, oil paintings, or printing and dyeing textiles and flat carriers such as glass, silk screen printing can play an important role, and silk screen printing is also required during the cover plate processing process.

[0003] For example, a Chinese patent (publication number CN213108619U) discloses a screen printing machine with a scraper, including a screen printing machine function box, a workbench is arranged on the top of the screen printing machine function box, a first discharge port is opened on one side of the workbench, a lifting frame is fixedly installed on the top of the screen printing machine function box, a slide groove is installed on the surface of the lifting frame, a positioning shaft is installed inside the slide groove, a control box is sleeved on the surface of the positioning shaft, a scraper body is connected to the bottom of the control box, and a first air compressor is installed through the inside of the screen printing machine function box. Drying slot, a breeze exhaust pipe is installed inside the first air-drying slot, a second material outlet is opened on one side of the screen printing machine function box, a material guide roller is installed through the inside of the screen printing machine function box, a second air-drying slot is opened on the side of the screen printing machine function box, an air-drying pipe is installed through the inside of the second air-drying slot, a motor is installed on the back of the screen printing machine function box through a support platform, the output end of the motor is connected to a transmission gear through a rotating shaft, the transmission gear is engaged with a driven gear through a tooth eye, and a winding roller is fixedly connected inside the driven gear. In specific practice, the inventor found the following defects:

[0004] The scraper only scrapes the ink into the screen holes and then spreads the ink on the cover surface, but does not solve the problem of ink blocking the screen holes, so the screen needs to be cleaned and replaced frequently, which is not conducive to use. Therefore, we improve this and propose a screen printing device. Utility Model Content

[0005] The technical problem to be solved by the embodiment of the utility model is that the scraper can only scrape the ink into the screen holes and then spread the ink on the cover plate surface, but cannot solve the problem of ink blocking the screen holes.

[0006] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0007] A screen printing device comprises: a scraper body, a plurality of blowing holes are opened at the bottom end of the scraper body, the scraper body is also connected to an air pipe, the air pipe is connected to the plurality of blowing holes, and the air pipe is used to connect the blowing holes with a compressed air source so that the compressed gas is sprayed out from the blowing holes to clean the ink.

[0008] As an improved form of the utility model, a control valve is further provided on the air pipe, and the control valve is used to control the on and off of the compressed gas.

[0009] As an improved manner of the utility model, it further comprises a limiting fixture located below the scraper body, one side of the limiting fixture is provided with a limiting piece, and the side of the limiting fixture away from the limiting piece is provided with a collecting piece.

[0010] As an improvement of the utility model, the limiting member is used for limiting the position of the workpiece during silk-screen printing, and the collecting member is used for collecting the cleaned ink.

[0011] As an improved manner of the utility model, the limiting member includes a cover plate limiting groove opened on one side of the limiting fixture, and the cover plate limiting groove is used for limiting the workpiece.

[0012] As an improved manner of the utility model, the collecting member includes an ink collecting chamber arranged on a side of the limiting fixture away from the limiting groove of the cover plate, and the ink collecting chamber is used to collect the ink when cleaning the ink.

[0013] As an improved method of the utility model, a double-sided adhesive is pasted in the ink collection chamber, and the double-sided adhesive is used to absorb the cleaned ink.

[0014] As an improvement of the utility model, a screen body is arranged between the limiting fixture and the scraper body, and the screen body is used to realize screen printing of the product in cooperation with the scraper body.

[0015] As an improved mode of the utility model, compressed gas is sprayed out from the blowing holes to clean the ink in the mesh holes of the screen body.

[0016] As an improved manner of the present utility model, a support platform is provided below the position limiting jig, the position limiting jig is placed on the support platform, and the support platform is used to support the position limiting jig.

[0017] Compared with the prior art, the embodiments of the present invention mainly have the following beneficial effects:

[0018] In order to solve the problem that the scraper in the prior art only scrapes the ink into the holes of the screen and then spreads the ink on the surface of the cover plate, but cannot solve the problem of ink blocking the holes of the screen, the present application arranges a plurality of blowing holes at the bottom of the scraper body, and the blowing holes are connected to a compressed air source through an air pipe. The compressed air source can transport compressed gas to the blowing holes through the air pipe, and the compressed gas ejected from the blowing holes can clean the ink, so as to solve the problem of ink blocking. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A schematic diagram of the structure of the screen printing device provided in this application;

[0020] Figure 2 A schematic diagram of the structure of the cover plate limiting groove of the screen printing device provided in this application;

[0021] Figure 3 The screen printing device provided in this application Figure 2 Schematic diagram of the structure viewed from above;

[0022] Figure 4 A schematic diagram of the structure of the scraper body and the air blowing hole of the screen printing device provided in this application;

[0023] Figure 5 This is a structural schematic diagram of the screen printing device provided in this application when cleaning the screen plate body.

[0024] Indicated in the figure:

[0025] 1. Scraper body; 2. Blowing hole; 3. Screen body; 4. Limiting fixture; 401. Cover plate limiting groove; 402. Ink collecting chamber; 403. Double-sided adhesive; 5. Support platform. DETAILED DESCRIPTION

[0026] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those generally understood by those skilled in the art to which the present invention belongs; the terms used in the specification of the application herein are only for the purpose of describing specific embodiments and are not intended to limit the present invention. Reference to "embodiments" herein means that specific features, structures, or characteristics described in conjunction with the embodiments may be included in at least one embodiment of the present invention. The appearance of this phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0027] As described in the background art, the existing scraper only scrapes the ink into the screen holes and then spreads the ink onto the cover surface, but does not solve the problem of ink clogging the screen holes, so that the screen needs to be cleaned and replaced frequently, which is not conducive to use.

[0028] In order to solve this technical problem, the utility model provides a screen printing device, which is used to solve the problem of ink clogging.

[0029] Specifically, please refer to Figure 4 , the screen printing device specifically includes:

[0030] The scraper body 1 has a plurality of blowing holes 2 at the bottom end thereof, and the scraper body 1 is also connected to an air pipe, which is connected to the plurality of blowing holes 2. The air pipe is used to connect the blowing holes 2 with a compressed air source, so that the compressed gas is ejected from the blowing holes 2 to clean the ink.

[0031] The screen printing device provided by the utility model is provided with a plurality of blowing holes 2 at the bottom end of a scraper body 1. The blowing holes 2 are connected to a compressed air source through an air pipe. The compressed air source can transport compressed gas to the blowing holes 2 through the air pipe, and the compressed gas ejected from the blowing holes 2 can clean the ink, so as to solve the problem of ink blockage.

[0032] In order to enable those skilled in the art to better understand the solution of the utility model, the technical solution in the embodiments of the utility model will be clearly and completely described below in conjunction with the accompanying drawings.

[0033] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features and technical solutions in the embodiments may be combined with each other.

[0034] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0035] Embodiment 1 of the screen printing device of the utility model

[0036] like Figure 4 As shown, the screen printing device of the utility model comprises: a scraper body 1, a plurality of blowing holes 2 are opened at the bottom end of the scraper body 1, and the scraper body 1 is also connected with an air pipe, which is connected to the plurality of blowing holes 2. The air pipe is used to connect the blowing holes 2 with a compressed air source, so that the compressed gas is ejected from the blowing holes 2 to clean the ink, so as to solve the problem of ink blockage and improve the stability and efficiency of the screen printing process;

[0037] By carefully arranging a number of blowing holes 2 at the bottom end of the scraper body 1, an effective solution to the ink clogging problem that may occur during the screen printing process is achieved. The design of the blowing hole 2 is not just a simple hole, but also an efficient cleaning channel, which connects the scraper body with the compressed air source; the compressed air source, as the power source of the entire cleaning system, is closely connected to the blowing hole 2 through the air pipe. The air pipe is not just a simple conduit, it has sufficient pressure resistance and air tightness to ensure that the compressed gas can still be stably delivered under high pressure. When the ink needs to be cleaned, the compressed air source starts to work and generates high-pressure compressed gas, which is quickly transmitted to each blowing hole 2 through the air pipe; when the compressed gas is ejected from the blowing hole 2, its strong impact force can directly act on the clogged ink, blowing the ink out of the screen hole, thereby achieving the purpose of cleaning; the principle of this design is that it makes full use of the physical properties of the compressed gas, directly applies the cleaning force to the screen hole that needs to be cleaned, and achieves an efficient solution to the ink clogging problem, providing a strong guarantee for the smooth progress of the screen printing process.

[0038] Furthermore, a control valve is provided on the air pipe, and the control valve is used to control the on and off of compressed gas, so that during the silk-screen printing process of the workpiece, no compressed gas is ejected from the blowing hole 2 to affect the silk-screen printing of the workpiece, and when the ink needs to be cleaned, the control valve is turned on so that the compressed gas is transported from the air pipe to the blowing hole 2. The setting of the control valve ensures that the silk-screen printing effect will not be affected by the blowing during the silk-screen printing process, and the blowing function can be turned on in time when cleaning is needed. The operation is flexible and practical.

[0039] Embodiment 2 of the screen printing device of the utility model

[0040] The screen printing device of the utility model is further characterized by: Figure 1-Figure 3 As shown, it also includes a limiting fixture 4 located below the scraper body 1, a limiting piece is arranged on one side of the limiting fixture 4, and a collecting piece is arranged on the side of the limiting fixture 4 away from the limiting piece; the limiting piece is used to limit the workpiece during silk screen printing to reduce the movement of the workpiece during the silk screen printing process, and the collecting piece is used to collect the cleaned ink so as to centrally collect the cleaned ink. The design of the limiting fixture 4 not only provides a stable support for the workpiece, but also integrates the ink collection function, simplifies the operation process, and improves work efficiency.

[0041] Further, such as Figure 2 As shown, the limiting member includes a cover plate limiting groove 401 opened on one side of the limiting fixture 4, and the cover plate limiting groove 401 is used to limit the workpiece, that is, when the workpiece is silk-screened, the workpiece is placed in the cover plate limiting groove 401, and the workpiece can be limited by the cover plate limiting groove 401, thereby reducing the movement of the workpiece during the silk-screen printing process, so that the stability of the workpiece during the silk-screen printing process is effectively guaranteed, and the problem of poor silk-screen printing caused by the movement of the workpiece is reduced.

[0042] Further, such as Figure 3 and Figure 5 As shown, the collecting part includes an ink collecting chamber 402 arranged on the side of the limiting fixture 4 away from the limiting groove 401 of the cover plate, and the ink collecting chamber 402 is used to collect the ink when cleaning the ink. In the process of screen printing workpieces, the ink collecting chamber 402 is arranged to face the side away from the scraper body 1, and when cleaning the ink in the screen hole of the screen body 3, the limiting fixture 4 is turned over so that the ink collecting chamber 402 faces the scraper body 1. At this time, the ink collecting chamber 402 can collect the ink blown down by the compressed gas, thereby avoiding waste of ink and environmental pollution, and also facilitating subsequent cleaning work.

[0043] Further, such as Figure 3 As shown, a double-sided adhesive 403 is pasted in the ink collection chamber 402, and the double-sided adhesive 403 is used to absorb the ink under cleaning. By absorbing the ink on the double-sided adhesive 403, the thoroughness of cleaning can be further ensured. The double-sided adhesive 403 has a strong adhesion force and can absorb the ink blown off from the screen hole to prevent the ink from falling back onto the screen body 3 or contaminating other parts. This can not only ensure the cleanliness of the screen hole, but also avoid the waste of ink and environmental pollution.

[0044] That is, the limiting fixture 4 can be used as a positioning fixture and can also collect the cleaned ink, realizing two functions of one fixture. There is no need to open two fixture molds, thus saving the cost of fixture mold opening.

[0045] Further, such as Figure 2 As shown, a screen body 3 is arranged between the limiting fixture 4 and the scraper body 1 , and the screen body 3 is used to realize screen printing of the product in cooperation with the scraper body 1 .

[0046] Furthermore, compressed gas is ejected from the blowing hole 2 to clean the ink in the mesh of the screen body 3. When the screen body 3 performs silk screen printing on the cover plate, the design of the present application can reduce the pinhole defects of the cover plate caused by the blockage of the screen holes, increase the yield, reduce the loss, and there is no need to clean the screen or replace the new screen, thereby improving efficiency.

[0047] The blowing hole 2 is larger than the screen hole. Since the blowing hole 2 is larger than the screen hole, it is necessary to blow at a distance of 0.2 mm from the screen body 3 when blowing. Because the screen body 3 will gradually have its screen holes clogged with ink after half an hour of use, the clogged screen holes block the ink from penetrating, resulting in no ink attached to the surface of the cover plate below the clogged screen holes, causing a tiny circle-shaped light transmission phenomenon, which is called a "pinhole" defect. The present application eliminates the pinhole defect and improves the silk screen printing quality by solving the problem of screen hole clogging.

[0048] Embodiment 2 of the screen printing device of the utility model

[0049] The screen printing device of the utility model is further characterized by: Figure 1 As shown, a support platform 5 is provided below the limiting jig 4, and the limiting jig 4 is placed on the support platform 5. The support platform 5 is used to support the limiting jig 4. Through the setting of the support platform 5, a stable support can be provided for the limiting jig 4 to ensure the stability of the silk screen printing process.

[0050] When in use, for the convenience of description and understanding, this application uses A to represent the workpiece that needs to be screen-printed, and marks it in the figure. Taking the screen printing cover as an example, when screen printing, the cover limit groove 401 faces the screen body 3, the cover is placed in the cover limit groove 401, the screen body 3 is moved to the top of the cover, and ink is placed in the screen body 3. The ink passes through the screen holes of the screen body 3 under the scraping of the scraper body 1 to be screen-printed on the cover;

[0051] When the screen holes of the screen body 3 need to be cleaned, the limiting fixture 4 is turned over so that the ink collecting chamber 402 faces the screen body 3, that is, Figure 5 As shown, open the control valve so that the compressed gas is transported from the air pipe to the blowing hole 2 and sprayed from the blowing hole 2 to the screen body 3. The compressed gas blows off the ink blocked in the screen holes on the screen body 3, and the blown-off ink falls into the ink collecting chamber 402 and is adsorbed and collected by the double-sided adhesive 403. After cleaning, the ink collected in the ink collecting chamber 402 is cleaned out, and then a new double-sided adhesive 403 is replaced. When screen printing again, the limiting fixture 4 is turned over so that the cover limiting groove 401 faces the screen body 3.

[0052] Obviously, the embodiments described above are only some embodiments of the utility model, rather than all embodiments. The preferred embodiments of the utility model are given in the accompanying drawings, but they do not limit the patent scope of the utility model. The utility model can be implemented in many different forms. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the utility model more thorough and comprehensive. Although the utility model is described in detail with reference to the aforementioned embodiments, for those skilled in the art, it is still possible to modify the technical solutions recorded in the aforementioned specific implementation methods, or to replace some of the technical features therein with equivalents. Any equivalent structure made using the contents of the utility model specification and the accompanying drawings, directly or indirectly used in other related technical fields, is also within the scope of patent protection of the utility model.

Claims

1. A screen printing device, characterized in that: include: A scraper body (1) is provided with a plurality of blowing holes (2) at the bottom end of the scraper body (1). The scraper body (1) is also connected to an air pipe, which is connected to the plurality of blowing holes (2). The air pipe is used to connect the blowing holes (2) to a compressed air source, so that the compressed air is ejected from the blowing holes (2) to clean the ink.

2. The screen printing device according to claim 1, characterized in that: A control valve is also provided on the air pipe, and the control valve is used to control the on and off of the compressed gas.

3. The screen printing device according to claim 2, characterized in that: It also comprises a limiting fixture (4) located below the scraper body (1), one side of the limiting fixture (4) being provided with a limiting piece, and a side of the limiting fixture (4) away from the limiting piece being provided with a collecting piece.

4. The screen printing device according to claim 3, characterized in that: The limiting member is used for limiting the position of the workpiece during screen printing, and the collecting member is used for collecting the cleaned ink.

5. The screen printing device according to claim 4, characterized in that: The limiting member comprises a cover plate limiting groove (401) formed on one side of the limiting fixture (4), and the cover plate limiting groove (401) is used for limiting the position of a workpiece.

6. The screen printing device according to claim 5, characterized in that: The collecting member comprises an ink collecting chamber (402) arranged on a side of the limiting fixture (4) away from the limiting groove (401) of the cover plate, and the ink collecting chamber (402) is used to collect ink when cleaning the ink.

7. The screen printing device according to claim 6, characterized in that: A double-sided adhesive tape (403) is pasted in the ink collection chamber (402), and the double-sided adhesive tape (403) is used to absorb the cleaned ink.

8. The screen printing device according to claim 7, characterized in that: A screen plate body (3) is provided between the limiting jig (4) and the scraper body (1), and the screen plate body (3) is used to realize screen printing of the product in cooperation with the scraper body (1).

9. The screen printing device according to claim 8, characterized in that: Compressed gas is ejected from the blowing hole (2) to clean the ink in the mesh of the screen body (3).

10. The screen printing device according to claim 9, characterized in that: A support platform (5) is provided below the position limiting jig (4), the position limiting jig (4) is placed on the support platform (5), and the support platform (5) is used to support the position limiting jig (4).

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