Parallel calibration device for screen printing scraper and printing plane

Abstract

The utility model discloses a device and a method for calibrating the parallelism of a screen printing scraper and a printing plane. Two ends of the scraper are respectively provided with a micrometer head for adjusting the balance of two ends of the scraper; the calibration strips arranged on one side of the printing platform in parallel correspond to the scraper above the calibration strips. The lower part of the calibration strip is centrally supported on a rotating fulcrum, two pressure sensors are symmetrically distributed on two sides of the rotating fulcrum and are correspondingly arranged below two ends of the calibration strip, and the pressure sensors are in signal connection with a display screen; the rotating fulcrum and the pressure sensor are installed on the bottom plate through the lifting base and the lifting driving piece, and the bottom plate is provided with a horizontal adjusting assembly. The parallelism of the scraper and the printing plane is not repeatedly debugged by a manual visual inspection mode; accurate quantitative adjustment can be directly carried out according to the pressure value displayed by the display screen, the parallelism of the scraper and the printing plane can be rapidly calibrated at a time, the calibration work is accurate and reliable, the calibration result is stable, the calibration operation difficulty is effectively reduced, and the calibration work efficiency is greatly improved.

Description

Technical Field

[0001] This utility model relates to the field of screen printing, and in particular to a device for calibrating the parallelism between the squeegee of a screen printing machine and the printing surface. Background Technology

[0002] Before operating screen printing equipment, the parallelism between the squeegee and the printing substrate must be calibrated and adjusted. The accuracy of this adjustment directly affects the printing precision or quality of the substrate. Currently, the parallelism of the squeegee and the printing substrate in screen printing equipment is calibrated manually through repeated visual inspection. This method requires a high level of operator experience and is quite difficult to perform. It necessitates a repeated calibration and testing process, resulting in a high workload and unstable calibration results, thus affecting work efficiency. Utility Model Content

[0003] To address the aforementioned drawbacks, the technical problem this invention aims to solve is to provide a device for calibrating the parallelism between the squeegee and the printing surface of a screen printing machine, effectively reducing the difficulty of calibration operations and significantly improving calibration efficiency. To solve this technical problem, the present invention employs a parallel calibration device for a screen printing squeegee and the printing surface, comprising a squeegee and a printing platform. The squeegee is characterized by having micrometer heads at both ends for adjusting its balance; calibration strips are arranged side-by-side on one side of the printing platform, corresponding to the squeegee above; the calibration strips are centrally supported on a rotating fulcrum, with two pressure sensors symmetrically distributed on either side of the fulcrum, their sensors corresponding to the ends of the calibration strips, and the pressure sensor signals connected to a display screen; the rotating fulcrum and pressure sensors are mounted on a lifting base, which is mounted on a lifting drive component, which is mounted on a base plate, and the base plate is equipped with a horizontal adjustment assembly.

[0004] In one embodiment, the rotation fulcrum includes an upper connector fixed to the underside of the calibration bar and a lower connector fixed to the lifting base. The bearing is mounted on the support shaft of the lower connector, and the upper connector has a waist-shaped hole that fits onto the outer ring of the bearing.

[0005] In one embodiment, two guide blocks are symmetrically distributed on both sides of the rotation fulcrum, with the upper end of the guide block connected to the lower part of the calibration strip; a guide groove is installed on the lifting base corresponding to the guide block, with the lower part of the guide block inserted into the guide groove, and the guide block and guide groove are located between the rotation fulcrum and the pressure sensor.

[0006] In one embodiment, the leveling assembly consists of four leveling bolts respectively disposed at the four corners of the base plate.

[0007] The beneficial effects of this utility model are that it eliminates the need for repeated manual visual inspection to adjust the parallelism between the scraper and the printing surface; it allows for accurate quantitative adjustment based on the pressure value displayed on the screen, enabling quick and easy calibration of the parallelism between the scraper and the printing surface in one go. The calibration work is accurate and reliable, and the calibration results are stable, effectively reducing the difficulty of calibration operations and significantly improving the efficiency of calibration work.

[0008] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time.

[0009] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0010] It should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0011] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0012] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0013] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0014] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation. Attached Figure Description

[0015] Figure 1 A three-dimensional view of the overall structure of the parallel calibration device;

[0016] Figure 2 This is a side view of the overall structure of the parallel calibration device;

[0017] Figure 3 This is a schematic diagram of the combined structure of the calibration strip and the printing platform;

[0018] Figure 4 This is a schematic diagram of the assembly structure of the calibration strip;

[0019] Figure 5 This is a schematic diagram of the exploded structure of the calibration strip.

[0020] The attached diagram is labeled as follows: 1. Printing platform, 2. Calibration strip, 3. Pressure sensor, 301 sensor, 4. Upper connector, 401 waist-shaped hole, 5. Lower connector, 501 mounting shaft, 6. Bearing, 7. Guide block, 8. Guide groove, 9. Lifting base, 10. Base plate, 11. Scraper, 12. Micrometer head, 13. Horizontal adjustment bolt, 14. Lifting cylinder. Detailed Implementation

[0021] See appendix Figure 1-5 This describes a specific structure of the present invention. The parallel calibration device between the screen printing squeegee and the printing surface includes a squeegee 11 and a printing platform 1. The squeegee 11 has micrometer heads 12 at both ends for adjusting the balance of the two ends. Calibration strips 2 are arranged side-by-side on one side of the printing platform 1, corresponding vertically to the squeegee 11 above it.

[0022] The calibration strip 2 is centrally supported on a rotation fulcrum. With the rotation fulcrum (specifically, the support shaft 501) as the axis of symmetry, two pressure sensors 3 are symmetrically distributed on either side of the rotation fulcrum. The sensor 301 of the pressure sensor 3 is positioned below both ends of the calibration strip 2. The sensor 301 (also called the sensitive element) is the component of the pressure sensor that directly contacts the measured object (calibration strip 2). This component directly senses the measured object and outputs other quantities that have a definite relationship with the measured object. The pressure sensor 3 is connected to a display screen (not shown in the figure), and the pressure value measured by the pressure sensor 3 is displayed on the display screen.

[0023] The rotation fulcrum and pressure sensor 3 are mounted on the lifting base 9, which is mounted on the lifting drive component. The lifting drive component is mounted on the base plate 10, which is equipped with a leveling adjustment assembly. In the example, the lifting drive component consists of two lifting cylinders 14. The cylinder bodies of the lifting cylinders 14 are mounted on the base plate 10, and the driving end (such as the piston rod end) of the lifting cylinders 14, which connects to and drives the movement of the workpiece, acts on the lifting base 9.

[0024] In the example, the rotation fulcrum includes an upper connector 4 fixed below the calibration strip 2 and a lower connector 5 fixed on the lifting base 9. The bearing 6 is mounted on the support shaft 501 of the lower connector 5. The upper connector 4 is provided with a waist-shaped hole 401, which is fitted onto the outer ring of the bearing 6 to ensure the rotational flexibility of the calibration strip 2.

[0025] In the example, two guide blocks 7 are symmetrically distributed on both sides of the rotation fulcrum, with the upper end of the guide block 7 connected to the lower part of the calibration strip 2; a guide groove 8 is installed on the lifting base 9 corresponding to the guide block 7, with the lower part of the guide block 7 inserted into the guide groove 8. The guide block 7 and the guide groove 8 are located between the rotation fulcrum and the pressure sensor 3. The width of the guide block 7 is smaller than the width of the guide groove 8 to avoid interfering with the left and right swing of the guide block 7, thereby flexibly and effectively limiting the guide calibration strip 2 to prevent it from swinging back and forth.

[0026] In the example, the leveling components are four leveling bolts 13 respectively located at the four corners of the base plate 10.

[0027] The method of using the above-mentioned device includes the following steps:

[0028] S1: Using the top of the printing platform 1 (i.e. the printing plane) as the reference horizontal plane, measure the first parallelism between the two surfaces on the printing platform 1 and the calibration strip 2. During the measurement, the level of the calibration strip 2 can be adjusted by the four level adjustment bolts 13 until the first parallelism reaches the qualified value. Then, reset the display values ​​of the two pressure sensors 3 to zero.

[0029] S2: The calibration bar 2 is raised by two lifting cylinders 14. ， Until the calibration strip 2 is higher than the printing platform 1;

[0030] S3: The scraper 11 descends and abuts against the calibration strip 2. The two pressure sensors 3 are pressed and display the pressure value on the display screen. The operator adjusts the micrometer heads 12 at both ends of the scraper 11 according to the difference between the two pressure values ​​to balance the scraper 11 until the pressure values ​​displayed by the two pressure sensors 3 are equal. This means that the second parallelism between the scraper 11 blade and the printing surface meets the requirements.

[0031] S4: After completing the above adjustments, the squeegee resets and enters the standby state ready for printing. The two cylinders drive the calibration strip 2 to descend until the top of the calibration strip 2 is lower than the top of the printing platform 1, so as to avoid interfering with the movement of the squeegee.

[0032] The embodiments of the present invention disclosed above are merely illustrative of the present invention. The embodiments do not exhaustively describe all details, nor do they limit the present invention to the specific implementations described. Obviously, many modifications and variations can be made based on the content of this specification. This specification selects and describes these embodiments in detail with reference to the accompanying drawings to better explain the principles and practical applications of the present invention, thereby enabling those skilled in the art to better understand and utilize the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the spirit of the present invention. Therefore, the present invention is limited only to the claims and their full scope and equivalents, and not to the specific embodiments disclosed.

Claims

1. A parallel calibration device for a screen printing squeegee and a printing substrate, comprising a squeegee and a printing platform, characterized in that, The squeegee is equipped with micrometer heads at both ends for adjusting the balance of the squeegee; a calibration strip is arranged side by side on one side of the printing platform, corresponding to the squeegee above; the calibration strip is centrally supported on a rotating fulcrum, and two pressure sensors are symmetrically distributed on both sides of the rotating fulcrum. The sensors of the pressure sensors are located below the two ends of the calibration strip, and the pressure sensor signals are connected to the display screen; the rotating fulcrum and pressure sensors are mounted on a lifting base, which is mounted on a lifting drive component, which is mounted on a base plate, and the base plate is equipped with a leveling adjustment component.

2. The parallel calibration device for a screen printing squeegee and a printing substrate as described in claim 1, characterized in that, The rotation fulcrum includes an upper connector fixed to the underside of the calibration bar and a lower connector fixed to the lifting base. The bearing is mounted on the support shaft of the lower connector, and the upper connector has a waist-shaped hole that fits onto the outer ring of the bearing.

3. The parallel calibration device for a screen printing squeegee and a printing substrate as described in claim 1, characterized in that, Two guide blocks are symmetrically distributed on both sides of the rotation fulcrum, with the upper end of the guide block connected to the bottom of the calibration strip; a guide groove is installed on the lifting base corresponding to the guide block, with the lower part of the guide block inserted into the guide groove, and the guide block and guide groove are located between the rotation fulcrum and the pressure sensor.

4. The parallel calibration device for a screen printing squeegee and a printing substrate as described in claim 1, characterized in that, The leveling assembly consists of four leveling bolts located at the four corners of the base plate.

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