CN211280154U - High-precision screen printer - Google Patents

Abstract

The utility model relates to a screen printing machine technical field, concretely relates to high-precision screen printing machine, including the base, still include printing assembly, screen printing half tone and the workstation that top-down set gradually on the base, the workstation can be along horizontal and horizontal longitudinal movement, printing assembly and screen printing half tone all can be along vertical up-and-down motion, be provided with the screen printing tool on the workstation, be provided with counterpoint piece on the screen printing tool, the lower terminal surface of screen printing half tone is provided with the inductive spot corresponding with counterpoint piece, be provided with the response subassembly that is used for fixing a position the screen printing tool on the workstation; the utility model discloses establish counterpoint piece on the silk screen printing tool, be provided with the induction point corresponding with this counterpoint piece at the lower terminal surface of silk screen printing screen, be provided with the response subassembly simultaneously on the workstation with the position of location silk screen printing tool on the workstation, it is corresponding with the position of silk screen printing screen to ensure silk screen printing tool, improves the precision of silk screen printing, guarantees the silk screen printing quality.

Description

High-precision screen printer

Technical Field

The utility model relates to a silk screen printing machine technical field, concretely relates to high-accuracy silk screen printing machine.

Background

The screen printing machine is a common printing machine for printing characters and images, generally comprises mechanisms of inking, stamping, conveying and the like, and the principle of screen printing is that ink is transferred onto a printing stock through meshes of an image-text part by extrusion of a scraper during printing to form images and texts the same as an original manuscript.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve at least one of the technical problems existing in the prior art, and provides a high-precision screen printer, which comprises a base, a printing component, a screen printing plate and a workbench, wherein the printing component, the screen printing plate and the workbench are sequentially arranged on the base from top to bottom; the utility model discloses establish counterpoint piece on the silk screen printing tool, be provided with the induction point corresponding with this counterpoint piece at the lower terminal surface of silk screen printing screen, be provided with the response subassembly simultaneously on the workstation with the position of location silk screen printing tool on the workstation, it is corresponding with the position of silk screen printing screen to ensure silk screen printing tool, improves the precision of silk screen printing, guarantees the silk screen printing quality.

As a further improvement of the scheme, the silk screen printing jig is provided with a groove matched with the PCB, the depth of the groove is smaller than the thickness of the PCB, the silk screen printing jig aims to ensure that the silk screen printing plate is pressed and connected to the upper end face of the PCB by the printing press connection, the silk screen printing jig is prevented from interfering with the silk screen printing plate, and the printing quality is reduced.

As the further improvement of above-mentioned scheme, at least one flank of recess is provided with the opening that makes things convenient for the staff to take the PCB board, and its aim at conveniently puts into the silk screen printing tool with the PCB board, improves manual operation's smoothness degree and efficiency.

As a further improvement of the scheme, the induction component comprises distance sensors which are respectively arranged on the periphery of the workbench, the axes of the two opposite distance sensors are not overlapped, the silk screen jig is positioned at the central positions of the four distance sensors, the relative offset angle between the silk screen jig and the workbench can be adjusted according to actual needs, and the applicability of installing the silk screen jig on the workbench is improved.

As the further improvement of above-mentioned scheme, the counterpoint piece is the vertical correlation sensor that sets up, the correlation sensor is embedded on the silk screen printing tool, and its aim at pinpoints the position between silk screen printing screen and the silk screen printing tool, guarantees the silk screen printing quality to butt PCB board and not with the contact of correlation sensor when guaranteeing the downward motion of silk screen printing screen, avoid correlation sensor and silk screen printing screen to interfere mutually.

As a further improvement of the scheme, the counterpoint piece has two that set up respectively in silk screen printing tool diagonal, and its aim at further guarantees the position between silk screen printing tool and the silk screen printing screen, avoids the silk screen printing tool to produce the angle cheap and influence silk screen printing quality relative to the silk screen printing screen.

As a further improvement of the scheme, a plurality of suction nozzles used for adsorbing the silk-screen jig are arranged in the workbench, the aim of the silk-screen jig is to ensure that the silk-screen jig is stably installed on the workbench, manual installation is not needed, and uncertainty of manual operation is avoided.

As a further improvement of the above solution, the printing unit comprises at least two side-by-side doctor blades, which aim at facilitating the back-and-forth doctor of the printing unit to increase efficiency.

As a further improvement of the above scheme, the doctor blade is connected with a rotating motor, the rotating motor can drive the doctor blade to swing left and right, and the offset angle of the doctor blade relative to the screen printing plate can be adjusted according to actual needs, so that the applicability of the screen printing machine is improved.

As a further improvement of the scheme, the doctor blade comprises a brush head and an air blowing pipe arranged above the brush head, and the air blowing pipe is used for cleaning the brush head and ensuring the printing quality.

Drawings

The present invention will be further described with reference to the accompanying drawings and examples;

fig. 1 is a schematic three-dimensional axial view of a screen printing machine according to an embodiment of the present invention;

fig. 2 is a schematic top view of a table according to an embodiment of the present invention;

fig. 3 is a three-dimensional side view of a screen printing jig according to an embodiment of the present invention;

fig. 4 is a schematic structural view of a printing assembly according to an embodiment of the present invention;

fig. 5 is a schematic structural view of a doctor blade according to an embodiment of the present invention.

Detailed Description

This section will describe in detail the embodiments of the present invention, preferred embodiments of the present invention are shown in the attached drawings, which are used to supplement the description of the text part of the specification with figures, so that one can intuitively and vividly understand each technical feature and the whole technical solution of the present invention, but they cannot be understood as the limitation of the protection scope of the present invention.

In the description of the present invention, it should be understood that the orientation or positional relationship indicated with respect to the orientation description, such as up, down, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, a plurality of means are one or more, a plurality of means are two or more, and the terms greater than, less than, exceeding, etc. are understood as not including the number, and the terms greater than, less than, within, etc. are understood as including the number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present invention, unless there is an explicit limitation, the words such as setting, installation, connection, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above words in combination with the specific contents of the technical solution.

As shown in fig. 1 to 3, a high precision screen printer comprises a base 1, and a printing assembly 2, a screen printing plate 3, and a workbench 11 sequentially disposed on the base 1 from top to bottom, wherein the workbench 11 can horizontally move horizontally and vertically, specifically, the workbench 11 is connected with a conventional screw mechanism or a linear sliding table horizontally and vertically disposed, respectively, a screen printing fixture 12 is detachably mounted on the workbench 11, a groove 13 for placing a PCB is disposed on the screen printing fixture 12, i.e. the position between the PCB and the screen printing fixture 12 is relatively fixed or determined, the PCB can be positioned and mounted on the screen printing fixture 12, the printing assembly 2 and the screen printing plate 3 can respectively move vertically downward, the printing assembly 2 and the screen printing plate 3 can be respectively connected with a vertically disposed screw mechanism or a telescopic cylinder or a linear sliding table, namely, the PCB is placed in the screen printing jig 12, the screen printing plate 3 moves downwards to abut against the upper surface of the PCB, the printing component 2 is pressed against the screen printing plate 3 and moves horizontally to scrape ink, and the ink is transferred from the image-text mesh part of the screen printing plate 3 to the upper surface of the PCB, or the workbench 11 drives the screen printing jig 12 loaded with the PCB to move horizontally relative to the screen printing plate 3 so as to transfer the ink to the PCB; furthermore, the aligning member 15 is arranged on the screen printing jig 12, the lower end surface of the screen printing plate 3 is provided with sensing points corresponding to the aligning member 15, before ink scraping, the workbench 11 drives the aligning member 15 on the workbench 11 to correspond to the sensing points, the screen printing plate 3 moves downwards to abut against the PCB, the image-text mesh hole part on the screen printing plate 3 corresponds to the PCB, and then the PCB and the screen printing plate 3 move relatively to realize screen printing, so that the screen printing precision is improved; the worktable 11 is provided with a sensing assembly 16 for positioning the screen printing jig 12, in this embodiment, the sensing assembly 16 may be distance sensors respectively disposed around the worktable 11, and the axes of the two opposite distance sensors do not coincide, that is, the four distance sensors respectively detect the distances of the four sides of the screen printing jig 12 to ensure that the screen printing jig 12 is installed at the center of the worktable 11, further, the two opposite distance sensors detect the distance of the screen printing jig 12 to determine the offset angle of the screen printing jig 12 relative to the worktable 11, in this embodiment, the position and the angle of the screen printing screen 3 are fixed and are disposed parallel to the worktable 11, the four distance sensors are used to determine the offset angle of the screen printing jig 12 relative to the worktable 11, further improving the screen printing precision and adjusting the offset angle of the screen printing jig 12 and the worktable 11 as required, the applicability of the installation of the silk-screen printing jig 12 on the workbench 11 is improved, that is, when image-text information needing silk-screen printing at a certain angle on a PCB is required, the offset angle of the workbench 11 relative to the silk-screen printing plate 3 can be accurately adjusted through the induction component 16.

As a further improvement of the above scheme, as shown in fig. 3, the depth of the groove 13 is smaller than the thickness of the PCB, that is, the PCB is placed in the groove 13, so that the upper surface of the PCB protrudes from the screen printing jig 12, and the screen printing plate 3 is ensured to accurately abut against the lower surface of the PCB when moving downward; further, at least one flank of the groove 13 is provided with an opening 14 which is convenient for a human hand to take the PCB, namely, after the silk-screen printing is completed, the human hand conveniently takes the PCB out of the groove 13 through the opening 14, and the efficiency of manual operation is improved.

As a further improvement of the above scheme, as shown in fig. 2 and 3, the alignment member 15 is an alignment sensor vertically arranged upward, and the alignment sensor is embedded in the screen printing jig 12, that is, a blind hole or a through hole for accommodating the alignment member 15 is formed in the screen printing jig 12, and the upper end of the alignment member 15 does not exceed the upper surface of the screen printing jig 12, so as to accurately position the position between the screen printing plate 3 and the screen printing jig 12, ensure the quality of screen printing, ensure that the screen printing plate 3 abuts against the PCB and does not contact with the alignment sensor when moving downward, and avoid the interference between the alignment sensor and the screen printing plate 3; in this embodiment, the sensing point may be a metal sensing sheet used in cooperation with the correlation sensor; furthermore, the alignment members 15 are respectively disposed at two opposite corners of the screen printing jig 12, and the number of the sensing points is correspondingly two, so as to further ensure the position between the screen printing jig 12 and the screen printing plate 3, and avoid the influence on the screen printing quality caused by the cheap angle of the screen printing jig 12 relative to the screen printing plate 3.

As the further improvement of above-mentioned scheme, be provided with a plurality of suction nozzles that are used for adsorbing silk screen printing tool 12 in workstation 11, it is concrete, the plane is personally submitted in the contact between workstation 11 and the silk screen printing tool 12, the suction nozzle sets up on workstation 11 with silk screen printing tool 12 matched with in the plane and do not surpass this plane, because silk screen printing tool 12 is if adopting manual fixed after adjusting good angle on workstation 11, then produces assembly or fixed error easily, consequently, can adopt the suction nozzle to adsorb silk screen printing tool 12 on workstation 11, its aim at ensures that silk screen printing tool 12 is stable installation on workstation 11 to need not manual installation, avoided manual operation's uncertainty.

As a further improvement of the above solution, as shown in fig. 4 and 5, the printing unit 2 includes at least two side-by-side scraping blades, which are used to facilitate the back-and-forth scraping of the printing unit 2 for improving efficiency; the doctor blade can swing left and right to adjust the inclination angle between the doctor blade and the screen printing plate 3, the doctor blade is connected with a rotary motor 23, the rotary motor 23 preferably adopts a servo motor, the aim of the rotary motor is to accurately control the inclination angle of the doctor blade, and further, the doctor blade comprises a brush head 21 and an air blowing pipe 22 arranged above the brush head 21, the aim of the doctor blade is to clean the brush head 21, and the quality of screen printing is guaranteed.

The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made without departing from the gist of the present invention within the knowledge range of those skilled in the art.

Claims (10)

1. The utility model provides a high-accuracy silk screen printing machine, includes base (1), its characterized in that, still includes printing subassembly (2), silk screen printing screen and workstation (11) that top-down set gradually on base (1), horizontal and horizontal longitudinal movement can be followed in workstation (11), printing subassembly (2) and vertical up-and-down motion all can be followed in silk screen printing screen (3), be provided with silk screen printing tool (12) on workstation (11), be provided with counterpoint piece (15) on silk screen printing tool (12), the lower terminal surface of silk screen printing screen is provided with the induction point corresponding with counterpoint piece (15), be provided with induction component (16) that are used for fixing a position silk screen printing tool (12) on workstation (11).

2. A high-precision screen printing machine according to claim 1, wherein the screen printing jig (12) is provided with a groove (13) matched with the PCB, and the depth of the groove (13) is less than the thickness of the PCB.

3. A high precision screen printing machine as claimed in claim 2, characterized in that at least one side wing of said groove (13) is provided with an opening (14) for facilitating the access of the PCB board by human hand.

4. A high-precision screen printing machine according to claim 1, characterized in that said sensing assembly (16) comprises distance sensors respectively arranged around the working table (11), and the axes of the two opposite distance sensors are not coincident.

5. A high-precision screen printing machine according to claim 1, characterized in that the alignment member (15) is a vertical upward-arranged correlation sensor embedded in the screen printing jig (12).

6. A high-precision screen printing machine as claimed in claim 1, wherein said alignment member (15) has two which are arranged at opposite corners of the screen printing jig (12).

7. A high-precision screen printing machine according to claim 1, characterized in that a plurality of suction nozzles for sucking the screen printing jig (12) are arranged in the working table (11).

8. A high precision screen printing machine according to claim 1, characterized in that the printing unit (2) comprises at least two doctor blades arranged side by side.

9. A high precision screen printer according to claim 8, characterized in that the doctor blade is connected with a rotary motor (23), and the rotary motor (23) can drive the doctor blade to swing left and right.

10. A high-precision screen printing machine according to claim 8 or 9, characterized in that the doctor blade comprises a brush head (21) and a blow pipe (22) arranged above the brush head (21).

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