Screen printing device

Abstract

A printing table is arranged on a workbench, a silk screen assembly is located above the printing table, a bearing frame of the silk screen assembly is movably connected to the workbench and used for bearing a printing silk screen of the silk screen assembly, and the bearing frame can move relative to the printing table in the first direction so that the printing silk screen can abut against a part to be printed. The first driving assembly arranged on the workbench is connected with the bearing frame and used for driving the bearing frame to move in the first direction, the scraper assembly is arranged above the bearing frame, a scraper of the scraper assembly is movably arranged above the printing silk screen, and the bottom of the scraper abuts against the printing silk screen and can relatively move in the printing direction. The second driving assembly is arranged on the scraper assembly and connected with the scraper. The second driving assembly is used for driving the scraper to move in the printing direction. According to the technical scheme, automatic ink scraping can be achieved, the force of the scraping plate is more stable and more controllable, the situation that printing is not in place is avoided, the printing effect is improved, and the printing quality is guaranteed.

Description

Technical Field

[0001] The present application relates to the field of screen printing technology, and in particular to a screen printing device. Background Art

[0002] Screen printing uses a silk screen as a substrate, using a photosensitive platemaking process to create a screen printing plate with images. Printing is performed using the principle that the slurry is permeable to the image- and text-bearing portions of the screen, while the non-image- and text-bearing portions remain impermeable. This technology offers advantages such as a soft surface, low ink pressure, strong ink coverage, convenient platemaking, strong adhesion, low price, and easy-to-master technology. It is widely used in applications such as circuit boards, clothing, outer packaging, and product exterior decoration. Currently, the screen printing process still requires manual scraping of the ink on the screen. This can lead to uncontrolled scraping force over time, resulting in incomplete printing and poor quality. Utility Model Content

[0003] The embodiment of the present application discloses a screen printing device, which can realize automatic scraping of ink by a scraper and make the force of the scraper more stable and controllable, which is beneficial to avoid incomplete printing, and is beneficial to improving printing effects and ensuring printing quality.

[0004] In order to achieve the above-mentioned objectives, the present invention discloses a screen printing device, comprising:

[0005] a workbench, wherein a printing table is provided on the workbench and the printing table is configured to place a component to be printed;

[0006] a screen assembly, the screen assembly being located above the printing table, the screen assembly comprising a carrier and a printing screen, the carrier being movably connected to the workbench and configured to carry the printing screen, the carrier being movable relative to the printing table in a first direction so as to move the printing screen in the first direction until it abuts against the component to be printed;

[0007] a first driving assembly, the first driving assembly being disposed on the workbench, the first driving assembly being connected to the carrier, and the first driving assembly being configured to drive the carrier to move along the first direction;

[0008] a scraper assembly, the scraper assembly being disposed above the carrier, the scraper assembly comprising a scraper, the scraper being movably disposed above the printing screen, with the bottom of the scraper abutting against the printing screen, and the scraper being configured to be movable relative to the printing screen in a printing direction;

[0009] a second driving assembly, the second driving assembly being provided on the scraper assembly, the second driving assembly being connected to the scraper, and the second driving assembly being configured to drive the scraper to move along the printing direction;

[0010] The first direction is the height direction of the workbench, and the printing direction intersects with the first direction.

[0011] As an optional embodiment, the first driving assembly includes a first driving component, a first transmission component and a support component, the first driving component is arranged on the side of the workbench away from the printing table, the first transmission component is connected to the first driving component, the support component is connected to the first transmission component, and the support component is connected to the carrier, the support component is configured to support the carrier, and the first driving component is configured to drive the first transmission component to rotate to drive the support component to move along the first direction, so that the carrier drives the printing screen to move along the first direction.

[0012] As an optional embodiment, the first transmission member is located on a side of the workbench facing away from the printing table;

[0013] The support member includes a frame and a column, the frame is located on a side of the workbench away from the printing table and is connected to the first transmission member, and one end of the column is connected to an end of the frame away from the first transmission member;

[0014] The workbench is provided with a first through hole, and the column is passed through the first through hole and connected to the supporting frame.

[0015] As an optional embodiment, the frame includes a connecting portion and a plurality of sub-brackets arranged at intervals in a direction extending outward from the center of the connecting portion, the connecting portion is provided with a connecting hole, the first transmission member is in transmission connection with the connecting hole, and the number of the columns is correspondingly multiple, and an end of each sub-bracket away from the connecting hole is connected to the corresponding column;

[0016] and / or,

[0017] The first driving assembly also includes a first guide rod, which is located on the side of the workbench away from the printing table and is connected to the workbench. The first guide rod is arranged along the first direction, and the frame is provided with a first guide hole, and the first guide rod is passed through the first guide hole.

[0018] As an optional embodiment, the scraper assembly further includes a supporting top plate, the supporting top plate is arranged above the supporting frame, the scraper is arranged on a side of the supporting top plate close to the supporting frame, and the second drive assembly is arranged on the supporting top plate.

[0019] As an optional embodiment, the second drive assembly includes a second drive component and a second transmission component, the second drive component is arranged on the support top plate, the second transmission component is connected to the second drive component and the scraper, and the second transmission component is configured to rotate under the drive of the second drive component to drive the scraper to move along the printing direction.

[0020] As an optional embodiment, the second driving assembly further includes a first slider, the support top plate is provided with a first slide groove penetrating the support top plate and extending along the printing direction, the first slider can be slidably arranged in the first slide groove and connected to the scraper;

[0021] and / or,

[0022] The second driving component also includes a second slider, a second slide groove penetrating the support top plate and extending along the printing direction is provided on the support top plate, and a second guide rod is arranged in the second slide groove along the printing direction, the second slider is provided with a second guide hole along the printing direction, the second guide rod is passed through the second guide hole, and the second slider can be slidably passed through the second slide groove and connected to the scraper.

[0023] As an optional embodiment, the scraper assembly further includes an adjusting member, a through hole is provided on the support top plate, the adjusting member is passed through the through hole to be connected to the scraper, and the adjusting member is configured to adjust the scraper to move relative to the printing screen along the first direction.

[0024] As an optional embodiment, the carrier frame includes a main frame and a screen frame, the main frame is connected to the first driving assembly, the screen frame is arranged in the main frame, and the screen frame is configured to carry the printing screen.

[0025] As an optional embodiment, the main frame includes a first frame and a second frame, the first frame and the second frame are arranged facing each other along the first direction, and the first frame and the second frame cooperate to form a clamping groove, the screen frame is detachably arranged in the clamping groove, the first frame is connected to the first driving assembly, and the scraper assembly is connected to the second frame, and the first frame and the second frame are provided with a connecting lug on at least one side along the printing direction, the connecting lug is provided with a second through hole, and the second through hole is configured to allow a fastener to pass through, so that the first frame and the second frame are fastened together;

[0026] and / or,

[0027] The printing table is movably disposed on the workbench and can move relative to the workbench along a second direction. The printing table is provided with a handle portion, and the handle portion is configured to drive the printing table to move along the second direction.

[0028] The second direction is perpendicular to the first direction and the printing direction.

[0029] Compared with the prior art, the present invention has the following advantages:

[0030] The screen printing device provided by the embodiment of the present application has a first drive component set on the workbench and a second drive component set on the scraper component. The first drive component drives the carrier to move in the first direction to adjust the printing screen to approach and abut the component to be printed in the first direction, and the second drive component drives the scraper to move in the printing direction on the printing screen to print. In this way, the second drive component can automatically scrape the ink on the printing screen, and at the same time, the first drive component can adjust the scraper and the printing screen to approach and abut the component to be printed in the first direction, thereby adjusting the force of the scraper. On the one hand, the force of the scraper can be made more stable to ensure the printing quality. On the other hand, it is convenient to adjust the force of the scraper as needed, making the scraping force more controllable, which is conducive to avoiding the occurrence of incomplete printing and improving the printing effect.

[0031] In addition, by adjusting the movement of the scraper and the printing screen along the first direction through the first driving assembly, the screen printing device can adapt to parts to be printed with different thicknesses, which is conducive to improving the applicability of the screen printing device. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0033] Figure 1 This is a schematic structural diagram of a screen printing device disclosed in an embodiment of the present application from a first perspective;

[0034] Figure 2 is a structural schematic diagram of the screen printing device disclosed in an embodiment of the present application from a second perspective;

[0035] Figure 3 is a cross-sectional view of a screen printing device disclosed in an embodiment of the present application;

[0036] Figure 4Schematic diagram of the structure of the scraper assembly and the second drive assembly (omitting the second drive component) disclosed in the embodiment of the present application;

[0037] Figure 5 Schematic diagram of the structure of the screen assembly (screen frame and printing screen omitted) and the first drive assembly disclosed in the embodiment of the present application;

[0038] Figure 6 It is a structural schematic diagram of the workbench disclosed in the embodiment of this application.

[0039] Description of reference numerals:

[0040] 100-screen printing device; 1-workbench; 11-printing table; 111-handle; 112-third slider; 1a-first through hole; 12-third slide; 13-pillar; 2-screen assembly; 21-carrying frame; 211-main frame; 2111-first frame; 2112-second frame; 211a-clamping groove; 211b-connecting lug; 211c-second through hole; 2113-fastener; 212-screen frame; 22-printing screen; 3-first drive assembly; 31-first drive component; 32-first transmission component; 33-support member; 331-frame; 3311-connecting portion ;331a-connecting hole;331b-first guide hole;3312-sub-bracket;332-column;34-first guide rod;;4-scraper assembly;41-scraper;42-support top plate;421-first slide groove;422-second slide groove;423-second guide rod;424-avoidance groove;43-adjusting member;5-second drive assembly;51-second drive component;52-second transmission component;521-screw;522-transmission block;522a-transmission hole;53-first slider;54-second slider;54a-second guide hole;X-first direction;Y-printing direction;Z-second direction. DETAILED DESCRIPTION

[0041] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0042] In this application, terms such as "upper," "lower," "top," "bottom," "inner," and "outer" indicate positions or locations based on those shown in the accompanying drawings. These terms are intended to better describe this application and its embodiments and are not intended to limit the devices, elements, or components indicated to having a specific orientation, or to being constructed or operated in a specific orientation.

[0043] Furthermore, some of the above terms may be used to express other meanings besides indicating a position or location. For example, the term "on" may also be used to indicate a dependency or connection in certain circumstances. Those skilled in the art will understand the specific meanings of these terms in this application based on the specific circumstances.

[0044] Furthermore, the terms "disposed," "equipped with," and "connected" should be interpreted broadly. For example, they can refer to fixed connections, removable connections, or integral structures; mechanical connections or electrical connections; direct connections or indirect connections through an intermediary; or internal communication between two devices, elements, or components. Those skilled in the art will understand the specific meanings of these terms in this application based on the specific circumstances.

[0045] Furthermore, the terms "first," "second," etc., are primarily used to distinguish between different devices, elements, or components (which may or may not be of the same type and configuration), and are not intended to indicate or imply the relative importance or quantity of the devices, elements, or components indicated. Unless otherwise specified, "plurality" means two or more.

[0046] Screen printing uses hand-engraved lacquer or photochemical platemaking to create a screen printing plate. Pigment is then applied from a mesh material through a squeegee and ultimately onto the printed object, creating an image or text identical to the original. Due to its flexible surface, minimal printing pressure, strong ink coverage, ease of platemaking, strong adhesion, low cost, and easy-to-master technology, it is widely used in applications such as circuit boards, clothing, packaging, and product exterior decoration. Printing is the core step in screen printing. During the printing process, ink is transferred through the mesh of the screen to the printed material. External pressure is applied to the squeegee to push the ink through the mesh and onto the printed object. During printing, the screen must be manually lifted to load and unload the printed object, which is time-consuming, labor-intensive, and inefficient. Furthermore, the screen is difficult to secure, which can easily lead to printing failures.

[0047] To solve the above problems, the inventors tried to fix the printing screen by setting a screen frame, and used a motor to drive the screen frame to move along the height direction of the printing table instead of manually lifting the printing screen. However, after a long period of observation, the inventors found that although this can reduce the workload of manual labor and improve printing efficiency to a certain extent, during the printing process, manual scraping of the ink on the printing screen is still required. Since the pressure and speed need to be controlled during printing to ensure that the ink forms a uniform pattern in the correct position, and the printing process may need to be repeated many times to achieve the desired effect, it is easy for manual scraping to cause uncontrollable force, resulting in incomplete printing and affecting the printing effect.

[0048] In view of this, an embodiment of the present application provides a screen printing device, which drives the screen assembly to move along the first direction through a first driving component to adjust the printing screen to approach and abut against the part to be printed along the first direction, and drives the scraper to move along the printing direction on the printing screen through a second driving component, which can realize automatic scraping of ink and make the force of the scraper more stable and more controllable, which is conducive to avoiding the situation of incomplete printing, improving the printing effect and ensuring the printing quality.

[0049] The technical solution of the present application is further described below through specific embodiments and drawings.

[0050] See also Figures 1 to 3 , Figure 1 This is a schematic structural diagram of a screen printing device disclosed in an embodiment of the present application from a first perspective; Figure 2 is a structural schematic diagram of the screen printing device disclosed in an embodiment of the present application from a second perspective; Figure 3 : is a cross-sectional view of a screen printing device disclosed in an embodiment of the present application. The embodiment of the present application discloses a screen printing device, the screen printing device 100 comprising a workbench 1, a screen assembly 2, a first drive assembly 3, a scraper assembly 4, and a second drive assembly 5. The workbench 1 is provided with a printing table 11, the printing table 11 being configured to place a component to be printed. The screen assembly 2 is located above the printing table 11. The screen assembly 2 comprises a carrier 21 and a printing screen 22. The carrier 21 is movably connected to the workbench 1 and configured to carry the printing screen 22. The carrier 21 can move relative to the printing table 11 along a first direction X so that the printing screen 22 moves along the first direction X until it abuts against the component to be printed. The first drive assembly 3 is provided on the workbench 1. The first drive assembly 3 is connected to the carrier 21, and the first drive assembly 3 is configured to drive the carrier 21 to move along the first direction X. The scraper assembly 4 is arranged above the carrier 21, and the scraper assembly 4 includes a scraper 41. The scraper 41 is movably arranged above the printing screen 22, and the bottom of the scraper 41 abuts against the printing screen 22. The scraper 41 is configured to be able to move along the printing direction Y relative to the printing screen 22. The second drive assembly 5 is provided on the scraper assembly 4, the second drive assembly 5 is connected to the scraper 41, and the second drive assembly 5 is configured to drive the scraper 41 to move along the printing direction Y, wherein the first direction X is the height direction of the workbench 1, and the printing direction Y intersects with the first direction X.

[0051] In this way, the first drive assembly 3 drives the carrier 21 to move along the first direction X to adjust the printing screen 22 to approach and abut against the component to be printed along the first direction X, and the second drive assembly 5 drives the scraper 41 to move along the printing direction Y on the printing screen 22 to perform printing. First, the second drive assembly 5 can automatically scrape the ink on the printing screen 22; second, the first drive assembly 3 can adjust the force of the scraper 41, which can make the force of the scraper 41 more stable and ensure the printing quality. It is also convenient to adjust the force of the scraper 41 as needed, making the scraping force more controllable, thereby helping to avoid the occurrence of incomplete printing and improving the printing effect; third, the first drive assembly 3 can adjust the gap between the printing screen 22 and the workbench 1, so that the screen printing device 100 can adapt to components to be printed of different thicknesses, which is conducive to improving the applicability of the screen printing device 100.

[0052] In some embodiments, the first drive assembly 3 includes a first drive component 31, a first transmission component 32 and a support component 33. The first drive component 31 is arranged on the side of the workbench 1 away from the printing table 11. The first transmission component 32 is connected to the first drive component 31. The support component 33 is connected to the first transmission component 32, and the support component 33 is connected to the carrier 21. The support component 33 is configured to support the carrier 21. The first drive component 31 is configured to drive the first transmission component 32 to rotate to drive the support component 33 to move along the first direction X, so that the carrier 21 drives the printing screen 22 to move along the first direction X.

[0053] The carrier 21 can be fixed by the first driving component 31, the first transmission component 32 and the support component 33; at the same time, the printing screen 22 can be moved along the first direction X by the first driving component 31, which can reduce manual processes, improve the automation rate of the screen printing device 100, help improve printing efficiency, and make the movement of the printing screen 22 more controllable.

[0054] Optionally, the above-mentioned first drive component 31 and first transmission component 32 can be implemented in multiple ways. For example, the first drive component 31 can be set as a cylinder, and the first transmission component 32 can be set as a connecting rod; in addition, the first drive component 31 can be set as a motor, and the first transmission component 32 can be set as a ball screw; or, the first drive component 31 can be set as a motor, and the first transmission component 32 can be set as a threaded rod, etc. This embodiment does not limit this.

[0055] For example, Figure 2 and Figure 3As shown, the first drive component 31 is configured as a motor, and the first transmission member 32 is configured as a threaded rod. The motor is fixed to the side of the workbench 1 facing away from the printing table 11. The driving end of the motor is connected to the threaded rod, which is arranged along the first direction X. A threaded connection hole 331a is provided in the middle of the support member 33. The connection hole 331a is threadedly connected to the threaded rod. Rotation of the motor drives the threaded rod to rotate, thereby moving the support member 33 along the first direction X. The threaded connection between the threaded rod and the connection hole 331a converts the rotation of the motor into linear motion of the support member 33, thereby achieving movement of the support member 33 along the first direction X. Furthermore, the motor drive makes the motion process more controllable and the driving force more stable. The threaded rod transmission makes the transmission structure simpler, which facilitates the simplification of the structure of the screen printing device 100. Alternatively, the motor can be configured as a servo motor, a forward and reverse motor, etc.

[0056] As an optional embodiment, the first transmission member 32 is located on the side of the workbench 1 away from the printing table 11. The support member 33 includes a frame 331 and a column 332. The frame 331 is located on the side of the workbench 1 away from the printing table 11 and is connected to the first transmission member 32. One end of the column 332 is connected to the end of the frame 331 away from the first transmission member 32. The workbench 1 is provided with a first through hole 1a. The column 332 is passed through the first through hole 1a and is connected to the carrier 21. The connection between the first transmission member 32 and the carrier 21 is achieved through the frame 331 and the column 332. The first through hole 1a on the workbench 1 can, on the one hand, make the structure of the screen printing device 100 more compact. On the other hand, the first through hole 1a can guide and limit the movement of the column 332, so that the column drives the movement of the carrier 21 more stably and does not move or deviate.

[0057] It can be understood that the first through hole 1a can be a square hole, a round hole, a diamond hole, an elliptical hole, etc., and this embodiment does not limit this.

[0058] Similarly, the above-mentioned columns 332 can be circular columns, square columns, diamond columns, elliptical columns, I-shaped columns, etc., which are not limited in this embodiment.

[0059] As an optional embodiment, the frame body can be roughly in the shape of a cross. The frame body 331 includes a connecting portion 3311 and a plurality of sub-brackets 3312 arranged at intervals in a direction extending outward from the center of the connecting portion 3311. The connecting portion 3311 is provided with a connecting hole 331a. The first transmission member 32 is in transmission connection with the connecting hole 331a. There are a plurality of corresponding columns 332, and the end of each sub-bracket 3312 away from the connecting hole 331a is connected to the corresponding column 332. By configuring the frame body 331 as the connecting portion 3311 and the plurality of sub-brackets 3312, the frame body can be made lighter, which is conducive to reducing the power loss of the first driving member 31 and the tension on the first transmission member 32 along the first direction X, thereby improving the stability of the first transmission member 32. The plurality of columns 332 can make the connection of the support frame 21 more stable, preventing the support frame from tilting due to unstable force.

[0060] Optionally, the sub-bracket may be rod-shaped, and the plurality of sub-brackets 3312 may be provided in two or more forms, such as two, three, four, five, six, etc., which are not limited in this embodiment. Figure 1 and 2 As shown, there are four sub-brackets 3312, and the four corners of the carrier frame 21 are supported by four sub-brackets 3312 and four columns 332. Compared with two or three sub-brackets 3312, the support is more stable; and the four sub-brackets 3312 can further reduce the weight of the frame 331 while achieving support stability, which is beneficial to improving the stability of the first drive component 3.

[0061] As an optional embodiment, the first drive assembly 3 further includes a first guide rod 34, which is located on the side of the workbench 1 facing away from the printing table 11 and is connected to the workbench 1. The first guide rod 34 is arranged along the first direction X, and the frame 331 is provided with a first guide hole 331b, through which the first guide rod 34 is inserted. The first guide rod 34 guides the movement of the frame 331 along the first direction X, thereby improving the stability of the frame 331 along the first direction X and preventing misalignment of the frame 331. At the same time, the first guide rod 34 reinforces the stability of the frame 331, preventing the frame 331 from tilting due to uneven force transmitted to the frame 331 when one end of the support frame 21 is subjected to force from the scraper 41 during the printing process.

[0062] It is understood that the first guide holes 331b on the frame 331 are provided on the sub-brackets 3312. That is, each sub-bracket may be provided with one or more first guide holes. Alternatively, as another example, some first sub-brackets may be provided with first guide holes, while others may not. The number and arrangement of the first guide holes may be determined based on practical circumstances and are not specifically limited in this embodiment.

[0063] As an optional embodiment, the bottom end of the workbench 1 is provided with a plurality of pillars 13, which are arranged at intervals around the periphery of the workbench 1 and are configured to support the workbench 1. The pillars 13 provide support for the workbench 1 and, by providing the pillars 13, provide space at the bottom of the workbench 1 for mounting the first drive assembly 3.

[0064] Optionally, the support 13 may be provided in plurality and may be provided in two or more forms, such as two, three, four, five, six, etc., which is not limited in this embodiment. Figure 1 and 2 As shown, four pillars 13 are provided, and the four pillars 13 are distributed at the four corners of the workbench 1. In this way, the support of the pillars 13 to the workbench 1 is more stable.

[0065] In some embodiments, the scraper assembly further includes a support top plate 42 disposed above the carrier 21. The scraper 41 is disposed on a side of the support top plate 42 adjacent to the carrier 21. The second drive assembly 5 is disposed on the support top plate. The support top plate 42 securely connects the second drive assembly 5 and the scraper 41, making the screen printing apparatus 100 more compact.

[0066] Optionally, the support top plate 42 is disposed above the carrier 21 via column feet, or the support top plate 42 is disposed above the carrier 21 via support seats, etc., which is not limited in this embodiment. It is understood that because the scraper 41 is disposed on the side of the support top plate 42 close to the carrier 21, and the support top plate 42 is fixed to the carrier 21, when the first drive assembly 3 drives the carrier 21 to move along the first direction X, the scraper 41 will also be driven by the carrier 21 and move synchronously along the first direction X.

[0067] As an optional embodiment, the second drive assembly 5 includes a second drive component 51 and a second transmission member 52. The second drive component 51 is disposed on the support top plate 42. The second transmission member 52 is connected to the second drive component 51 and the scraper 41. The second transmission member 52 is configured to rotate under the drive of the second drive component 51 to drive the scraper 41 to move along the printing direction Y. The second drive component 51 and the second transmission member 52, on the one hand, enable the scraper 41 to move in the printing direction X; on the other hand, the second drive component 51 makes the scraping process of the scraper 41 more controllable and the scraping quality more consistent, thereby improving the effect and efficiency of screen printing.

[0068] Optionally, the above-mentioned second drive component 51 and second transmission component 52 can be implemented in various ways. For example, the first drive component 31 can be set as a cylinder, and the first transmission component 32 can be set as a connecting rod; in addition, the first drive component 31 can be set as a motor, and the first transmission component 32 can be set as a transmission belt and pulley; or, the first drive component 31 can be set as a motor, and the first transmission component 32 can be set as a gear or a rack; or, the first drive component 31 can be set as a motor, and the first transmission component 32 can be set as a threaded rod, etc., which is not limited in this embodiment.

[0069] Please combine Figure 4 , Figure 4 Schematic diagram of the structure of the scraper assembly and the second drive assembly (the second drive component is omitted) disclosed in an embodiment of the present application. Exemplarily, the second drive component 51 is configured as a motor (not shown), and the second transmission member 52 is configured as a screw 521 and a transmission block 522. The motor is provided on the support top plate 42, and the driving end of the motor is connected to the screw 521. The screw 521 is provided along the printing direction Y. The transmission block 522 is provided with a transmission hole 522a along the printing direction Y. The screw 521 is passed through the transmission hole 522a and is threadedly connected to the transmission hole 522a. The support top plate 42 is provided with an avoidance groove 424 that passes through the support top plate 42 and extends along the printing direction Y. The transmission block 522 is passed through the avoidance groove 424 and is connected to the scraper 41. The motor drives the screw 521 to rotate, drives the transmission block 522 to move along the printing direction Y, and drives the scraper 41 to move along the printing direction Y. This not only enables the movement of the scraper 41 along the printing direction Y, but also simplifies the transmission structure of the second drive assembly 5 through the screw 521 and transmission block 522, making it easier to set up and assemble. Furthermore, by having the transmission block 522 pass through the avoidance groove 424 and connect to the scraper 41, the structure of the screen printing device 100 can be made more compact and centralized. Alternatively, the motor can be configured as a servo motor, a forward / reverse motor, or the like.

[0070] like Figure 4As shown, in some embodiments, the second drive component 5 also includes a first slider 53, and the support top plate 42 is provided with a first slide groove 421 that penetrates the support top plate 42 and extends along the printing direction Y. The first slider 53 can be slidably passed through the first slide groove 421 and connected to the scraper 41.

[0071] In some embodiments, the second driving component 5 also includes a second slider 54, a second slide groove 422 is provided on the support top plate 42, which passes through the support top plate 42 and extends along the printing direction Y, and a second guide rod 423 is arranged in the second slide groove 422 along the printing direction Y. The second slider 54 is provided with a second guide hole 54a along the printing direction Y, the second guide rod 423 is passed through the second guide hole 54a, and the second slider 54 can be slidably passed through the second slide groove 422 and connected to the scraper 41.

[0072] In some embodiments, the second drive assembly 5 also includes a first slider 53 and a second slider 54. The support top plate 42 is provided with a first slide groove 421 and a second slide groove 422 that penetrate the support top plate 42 and extend along the printing direction Y, and a second guide rod 423 arranged in the second slide groove 422 along the printing direction Y. The first slider 53 can be slidably passed through the first slide groove 421 and connected to the scraper 41. The second slider 54 is provided with a second guide hole 54a along the printing direction Y. The second guide rod 423 is passed through the second guide hole 54a, and the second slider 54 can be slidably passed through the second slide groove 422 and connected to the scraper 41.

[0073] In this way, through the first slider 53 and the first slide groove 421, the second slider 54 and the second slide groove 422 and the second guide rod 423, the scraper 41 can move relative to the printing screen 22 along the printing direction Y more smoothly, and the moving trajectory of the scraper 41 can be limited, thereby preventing the scraper 41 from deviating during the movement along the printing direction Y; and, during the scraping process of the scraper 41, pressure is applied between the scraper 41 and the printing screen 22, and through the first slider 53 and the first slide groove 421, the second slider 54 and the second slide groove 422 and the second guide rod 423, the scraper 41 can be subjected to uniform force during the scraping process, thereby avoiding the situation where the scraper 41 is skewed and the printing is not in place, which is beneficial to improving the printing effect and printing quality.

[0074] In some embodiments, the scraper assembly 4 further includes an adjusting member 43 . The support top plate 42 is provided with a through hole (not shown). The adjusting member 43 is inserted through the through hole to connect with the scraper 41 . The adjusting member 43 is configured to adjust the movement of the scraper 41 relative to the printing screen 22 along the first direction X. In this way, the gap between the scraper 41 and the printing screen 22 can be adjusted by the adjusting member 43 . On the one hand, this allows the screen printing device 100 to be adapted to printing screens 22 of different thicknesses. On the other hand, the adjusting member 43 can be used to adjust the pressure applied by the scraper 41 to the printing screen 22 , thereby adjusting the scraping force of the scraper 41 . This facilitates adjustment of the scraping force as needed, making the scraping force controllable and improving the printing effect.

[0075] Optionally, the above-mentioned through-holes are provided at the first slide groove 421 , so that no further through-holes are required on the support top plate 42 , making the structure of the support top plate 42 more centralized and preventing the support top plate 42 from becoming unstable due to too many holes and grooves.

[0076] Optionally, the adjustment member 43 may be configured to be manually adjustable or electrically adjustable, which is not limited in this embodiment.

[0077] Optionally, when the adjustment member 43 is set to be electrically driven, it can be configured to cooperate with a motor and a gear or a rack; or it can be configured to cooperate with a motor and a ball screw, etc. When the adjustment member 43 is set to be manually adjusted, it can be configured to cooperate with a knob and a gear or a rack; or it can be configured to cooperate with a screw, etc., which is not limited in this embodiment. For example, Figure 4 As shown, the adjusting member 43 is configured as a screw, and the first slider 53 is provided with a threaded hole (not shown) along the first direction X. The screw is inserted into the threaded hole and connected to the scraper 41. The adjusting screw moves relative to the first slider 53 in the first direction X, thereby driving the scraper 41 to move in the first direction X. By configuring the adjusting member 43 as a screw, the structure of the adjusting member 43 is simplified, making it easier to set up and assemble. Furthermore, the screw can achieve fine adjustment of the movement of the scraper 41 in the first direction X and fix the adjusted position.

[0078] Please combine Figure 5 , Figure 5 Schematic diagram of the structure of the screen assembly (screen frame and printing screen omitted) and the first drive assembly disclosed in the embodiments of the present application. In some embodiments, the carrier 21 includes a main frame 211 and a screen frame 212. The main frame 211 is connected to the first drive assembly 3. The screen frame 212 is disposed in the main frame 211 and is configured to support the printing screen 22. The main frame 211 and the screen frame 212 are used to securely connect the printing screen 22, preventing the printing screen 22 from shifting during the scraping process of the scraper 41, thereby improving the printing effect and printing quality.

[0079] Optionally, the main frame 211 includes a first frame 2111 and a second frame 2112, the first frame 2111 and the second frame 2112 are arranged to face each other along the first direction X, and the first frame 2111 and the second frame 2112 cooperate to form a snap-in groove 211a, the screen frame 212 is detachably arranged in the snap-in groove 211a, the first frame 2111 is connected to the first drive assembly 3, the scraper assembly 4 is connected to the second frame 2112, the first frame 2111 is connected to the first drive assembly 3, the scraper assembly 4 is connected to the second frame 2112, the first frame 2111 and the second frame 2112 are provided with a connecting lug 211b on at least one side along the printing direction Y, the connecting lug 211b is provided with a second through hole 211c, and the second through hole 211c is configured for a fastener 2113 to pass through so that the first frame 2111 and the second frame 2112 are fastened together. By setting the screen frame 212 in the snap-fit ​​groove 211a formed by the first frame 2111 and the second frame 2112, and by providing fasteners 2113 to cooperate with the connecting lugs 211b, on the one hand, the screen frame 212 can be fixed; on the other hand, the fasteners 2113 can make the screen frame 212 detachable, making it convenient to replace the printing screen 22.

[0080] Optionally, the first frame 2111 and the second frame 2112 are slidably connected along one side in the printing direction Y, so that the second frame 2112 can be rotated relative to the first frame 2111 until the second frame 2112 and the first frame 2111 overlap or form an angle. In this way, when replacing the printing screen 22, the second frame 2112 can be rotated relative to the first frame 2111 until the second frame 2112 and the first frame 2111 form an angle, and then the screen frame 212 can be replaced without lifting the entire second frame 2112, thereby facilitating the replacement of the printing screen 22.

[0081] See also Figure 6 , Figure 6 is a schematic diagram of the structure of a workbench disclosed in an embodiment of the present application. In some embodiments, a printing table 11 is movably mounted on the workbench 1 and is movable relative to the workbench 1 in a second direction Z. The printing table 11 is provided with a handle 111 configured to move the printing table 11 in the second direction Z, wherein the second direction Z is perpendicular to the first direction X and the printing direction Y. Thus, by pulling the handle 111, the printing table 11 can be extended in the second direction Z, facilitating the unloading of completed components to be printed and the loading of new components to be printed, thereby improving printing efficiency.

[0082] Optionally, the handle portion 111 can be configured as a handle, a pull plate, etc., which is not limited in this embodiment.

[0083] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some or all of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A screen printing device, characterized in that: include: a workbench, wherein a printing table is provided on the workbench and the printing table is configured to place a component to be printed; a screen assembly, the screen assembly being located above the printing table, the screen assembly comprising a carrier and a printing screen, the carrier being movably connected to the workbench and configured to carry the printing screen, the carrier being movable relative to the printing table in a first direction so as to move the printing screen in the first direction until it abuts against the component to be printed; a first driving assembly, the first driving assembly being disposed on the workbench, the first driving assembly being connected to the carrier, and the first driving assembly being configured to drive the carrier to move along the first direction; a scraper assembly, the scraper assembly being disposed above the carrier, the scraper assembly comprising a scraper, the scraper being movably disposed above the printing screen, with the bottom of the scraper abutting against the printing screen, and the scraper being configured to be movable relative to the printing screen in a printing direction; a second driving assembly, the second driving assembly being provided on the scraper assembly, the second driving assembly being connected to the scraper, and the second driving assembly being configured to drive the scraper to move along the printing direction; The first direction is the height direction of the workbench, and the printing direction intersects with the first direction.

2. The screen printing device according to claim 1, characterized in that The first driving assembly includes a first driving component, a first transmission component and a support component. The first driving component is arranged on the side of the workbench away from the printing table. The first transmission component is connected to the first driving component. The support component is connected to the first transmission component, and the support component is connected to the carrier. The support component is configured to support the carrier. The first driving component is configured to drive the first transmission component to rotate to drive the support component to move along the first direction, so that the carrier drives the printing screen to move along the first direction.

3. The screen printing device according to claim 2, characterized in that: The first transmission member is located on a side of the workbench facing away from the printing table; The support member includes a frame and a column, the frame is located on a side of the workbench away from the printing table and is connected to the first transmission member, and one end of the column is connected to an end of the frame away from the first transmission member; The workbench is provided with a first through hole, and the column is passed through the first through hole and connected to the supporting frame.

4. The screen printing device according to claim 3, characterized in that: The frame includes a connecting portion and a plurality of sub-brackets arranged at intervals in a direction extending outward from the center of the connecting portion, the connecting portion is provided with a connecting hole, the first transmission member is in transmission connection with the connecting hole, and the number of the columns is correspondingly multiple, and one end of each sub-bracket away from the connecting hole is connected to the corresponding column; and / or, The first driving assembly also includes a first guide rod, which is located on the side of the workbench away from the printing table and is connected to the workbench. The first guide rod is arranged along the first direction, and the frame is provided with a first guide hole, and the first guide rod is passed through the first guide hole.

5. The screen printing device according to any one of claims 1 to 4, characterized in that: The scraper assembly further includes a supporting top plate, which is arranged above the supporting frame. The scraper is arranged on a side of the supporting top plate close to the supporting frame, and the second driving assembly is arranged on the supporting top plate.

6. The screen printing device according to claim 5, characterized in that: The second drive assembly includes a second drive component and a second transmission component. The second drive component is arranged on the support top plate. The second transmission component is connected to the second drive component and the scraper. The second transmission component is configured to rotate under the drive of the second drive component to drive the scraper to move along the printing direction.

7. The screen printing device according to claim 5, characterized in that: The second driving assembly further includes a first slider, the support top plate is provided with a first slide groove penetrating the support top plate and extending along the printing direction, the first slider can be slidably arranged in the first slide groove and connected to the scraper; and / or, The second driving component also includes a second slider, a second slide groove penetrating the support top plate and extending along the printing direction is provided on the support top plate, and a second guide rod is arranged in the second slide groove along the printing direction, the second slider is provided with a second guide hole along the printing direction, the second guide rod is passed through the second guide hole, and the second slider can be slidably passed through the second slide groove and connected to the scraper.

8. The screen printing device according to claim 5, characterized in that: The scraper assembly further includes an adjusting member. A through hole is provided on the support top plate. The adjusting member is passed through the through hole to be connected to the scraper. The adjusting member is configured to adjust the scraper to move relative to the printing screen along the first direction.

9. The screen printing device according to any one of claims 1 to 4, characterized in that: The carrier frame includes a main frame and a screen frame. The main frame is connected to the first driving assembly. The screen frame is arranged in the main frame. The screen frame is configured to carry the printing screen.

10. The screen printing device according to claim 9, characterized in that: The main frame includes a first frame and a second frame, the first frame and the second frame are arranged to face each other along the first direction, and the first frame and the second frame cooperate to form a clamping groove, the screen frame is detachably arranged in the clamping groove, the first frame is connected to the first driving assembly, and the scraper assembly is connected to the second frame, and the first frame and the second frame are provided with a connecting lug on at least one side along the printing direction, the connecting lug is provided with a second through hole, and the second through hole is configured to allow a fastener to pass through, so that the first frame and the second frame are fastened together; and / or, The printing table is movably disposed on the workbench and can move relative to the workbench along a second direction. The printing table is provided with a handle portion, and the handle portion is configured to drive the printing table to move along the second direction. The second direction is perpendicular to the first direction and the printing direction.

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