Printing apparatus

Abstract

The invention relates to the technical field of printing equipment, and discloses printing equipment which comprises an alignment adjusting device, a screen printing lifting platform device and a screen printing plate screen printing device which are sequentially arranged in the vertical direction. The alignment adjusting device is arranged below the screen printing device and connected with the screen printing device, and a printing space is formed between the screen printing device and the alignment adjusting device; the screen printing lifting platform device is arranged in the printing space. According to the printing equipment disclosed by the invention, when alignment adjustment is carried out before printing, only the screen printing device needs to be subjected to alignment adjustment, the screen printing lifting platform does not need to be subjected to alignment adjustment, so that conveying of materials is not affected, the printing equipment is suitable for printing of long-span or roll material film materials, the printing quality is ensured, and the printing efficiency is improved. And high-precision adaptation can be provided for subsequent procedures such as full-automatic cutting.

Description

Technical Field

[0001] This application belongs to the technical field of printing equipment, and particularly relates to a printing equipment. Background Art

[0002] With the development of technology, consumers' aesthetic standards are getting higher and higher. Consumers have higher and higher requirements for the appearance of industrial products, the touch of products, and the quality experience. The application of roll materials in multiple industries such as consumer electronics, automotive, and packaging is becoming more and more extensive. Currently, the market has significantly improved requirements for the overprint accuracy of printed patterns, the quality of multi-color overprinting, and the presentation of micron-level details.

[0003] In order to improve printing accuracy, traditional screen printing usually sets a registration device to drive the screen printing platform for alignment adjustment. However, when printing materials such as long-span or roll materials, the movement of the screen printing platform will drive the material to move together, easily causing the unprinted section of the material to wrinkle and shift, directly affecting the printing accuracy and printing quality. Summary of the Invention

[0004] The purpose of this application is to provide a printing equipment to solve the problems of low printing accuracy and inability to guarantee printing quality when the existing screen printing equipment prints materials such as long-span or roll materials.

[0005] To achieve the above purpose, this application provides a printing equipment, including a registration adjustment device, a screen printing lifting platform device, and a screen printing device arranged in sequence along the vertical direction;

[0006] The registration adjustment device is arranged below the screen printing device and connected to the screen printing device, and a printing space is formed between the screen printing device and the registration adjustment device;

[0007] The screen printing lifting platform device is arranged in the printing space.

[0008] As a further improvement of the above technical solution:

[0009] In some embodiments, the screen printing device includes:

[0010] A screen mounting rack, connected to the registration adjustment device;

[0011] A screen module, arranged on the screen mounting rack. One end of the screen module along the ink scraping direction is pivotally connected to the screen mounting rack, and the other end is a movable end;

[0012] A squeegee module, movably arranged on the screen mounting rack along the ink scraping direction and located above the screen module;

[0013] A screen printing drive module, arranged on the screen mounting rack and drivingly connected to the squeegee module; and

[0014] The off-grid lifting module is arranged on the screen printing frame and connected to the movable end of the screen printing module.

[0015] In some embodiments, the lifting speed of the off-grid lifting module is positively correlated with the ink scraping movement speed of the screen printing driving module driving the squeegee module.

[0016] In some embodiments, the off-grid lifting module includes:

[0017] A lifting driving component, which is arranged on the screen printing frame and close to the movable end of the screen printing module; and

[0018] A movable hinge component, which has a movable hinge joint. One end of the movable hinge component is connected to the lifting driving component, and the other end is connected to the movable end of the screen printing module.

[0019] In some embodiments, the printing device further includes a vision alignment detection device, which is arranged on one side of the screen printing lifting platform device and is linked and cooperated with the alignment adjustment device.

[0020] In some embodiments, the vision alignment detection device includes:

[0021] A camera acquisition module; and

[0022] An image processing module, which is electrically connected to the camera acquisition module. The image processing module includes a film material edge extraction module, a screen printing frame reference extraction module, and a position offset calculation module based on the film material edge data and the screen printing frame reference points.

[0023] In some embodiments, the alignment adjustment device includes:

[0024] An alignment platform module, which has degrees of freedom of movement in the X-axis, Y-axis, and θ-axis; and

[0025] A Z-axis lifting module, which is arranged on the alignment platform module. The lifting end of the Z-axis lifting module is connected to the screen printing device.

[0026] In some embodiments, the screen printing lifting platform device includes:

[0027] A vacuum adsorption platform, which has a load-bearing support surface, and an adsorption mesh hole group is arranged on the load-bearing support surface;

[0028] A platform base, which is arranged below the vacuum adsorption platform; and

[0029] The lifting servo module is arranged on the platform base, and the driving end of the lifting servo module faces the side of the vacuum adsorption platform facing the platform base.

[0030] In some embodiments, the lifting servo module includes:

[0031] The guiding track is arranged on the platform base;

[0032] The lifting wedge guiding block is slidably arranged on the guiding track. Wherein, a contact portion that abuts against the wedge pushing surface of the lifting wedge guiding block is provided on the side of the vacuum adsorption platform facing the platform base;

[0033] The linear servo driving component is arranged on the platform base and is drivingly connected to the lifting wedge guiding block; and

[0034] The resetting member has one end connected to the platform base and the other end connected to the vacuum adsorption platform.

[0035] In some embodiments, the printing device further includes an adsorption conveying device, and the adsorption conveying device includes:

[0036] The front adsorption conveying module is arranged on the feeding side of the screen printing lifting platform device; and

[0037] The rear adsorption conveying module is arranged on the discharging side of the screen printing lifting platform device;

[0038] Wherein, both the front adsorption conveying module and the rear adsorption conveying module include a vacuum adsorption roller and a feeding driving component for driving the vacuum adsorption roller to rotate.

[0039] Compared with the prior art, in the printing device provided by the present application, by arranging the alignment adjustment device below the screen printing device and connecting it to the screen printing device, a printing space is formed between the screen printing device and the alignment adjustment device, and the screen printing lifting platform device is arranged in the printing space. In this way, the present application directly performs alignment adjustment on the screen printing device through the alignment adjustment device. The screen printing device only contacts the material during printing, and the screen printing lifting platform device contacts the material to be printed through lifting to provide support for the material. Therefore, when performing alignment adjustment before printing, only the screen printing device needs to be adjusted through alignment, and the screen printing lifting platform does not need to be aligned, so that the conveying of the material will not be affected. Thus, it is applicable to the printing of long-span or roll material films, ensuring the printing quality and providing high-precision adaptation for subsequent fully automatic cutting and other processes.

[0040] In addition, the alignment adjustment device is arranged below the screen printing device, making rational use of the installation space, with a more compact structure and more convenient manual calibration. Moreover, the up-and-down arrangement can lower the center of gravity of the alignment adjustment device and the screen printing device, reducing the weight of the screen printing device, thereby reducing the impact caused by high-speed printing vibrations and further improving the printing accuracy and quality.

[0041] Other features and advantages of the embodiments of the present application will be described in detail in the subsequent specific embodiment part. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] The drawings are used to provide a further understanding of the embodiments of the present application, and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the embodiments of the present application, but do not constitute a limitation to the embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on the structures shown in these drawings. In the drawings:

[0043] Figure 1 is a schematic perspective view of a printing device provided by an embodiment of the present application;

[0044] Figure 2 is a schematic perspective view of the position arrangement of the alignment adjustment device, the screen printing lifting platform device, and the screen printing device in the printing device provided by an embodiment of the present application;

[0045] Figure 3 is a schematic perspective view of the screen printing device in the printing device provided by an embodiment of the present application;

[0046] Figure 4 is Figure 3 a partial enlarged schematic view of part A in

[0047] Figure 5 is a schematic perspective view of the position arrangement of the alignment adjustment device and the screen printing device in the printing device provided by an embodiment of the present application;

[0048] Figure 6 is a schematic perspective view of the screen printing lifting platform device in the printing device provided by an embodiment of the present application;

[0049] Figure 7 is a module schematic view of the vision alignment detection device in the printing device provided by an embodiment of the present application;

[0050] Figure 8 is a schematic perspective view of the adsorption conveying device conveying the film material in the printing device provided by an embodiment of the present application;

[0051] Figure 9 is Figure 8Schematic three-dimensional structure diagram of the adsorption and transportation device shown

[0052] Figure 10 Schematic three-dimensional structure diagram of an adsorption and transportation device provided by an embodiment of the present application

[0053] Figure 11 is Figure 9 Partial enlarged schematic diagram at position B in

[0054] Figure 12 Schematic three-dimensional structure diagram of the second deviation correction execution module in the adsorption and transportation device provided by an embodiment of the present application

[0055] Figure 13 Schematic three-dimensional structure diagram of another adsorption and transportation device provided by an embodiment of the present application

[0056] Explanation of reference numerals

[0057] 100, screen printing device; 110, screen mounting frame; 120, screen module; 130, squeegee module; 140, screen printing drive module; 150, off-grid lifting module; 151, lifting drive assembly; 152, movable hinge assembly; 1520, first lifting member; 1521, second lifting member; 1522, movable hinge joint

[0058] 200, alignment adjustment device; 210, alignment platform module; 220, Z-axis lifting module; 221, Z-axis lifting frame; 222, Z-axis drive assembly; 223, Z-axis lifting rod

[0059] 300, screen printing lifting platform device; 310, vacuum adsorption platform; 311, abutting portion; 320, platform base; 330, lifting servo module; 331, guiding track; 332, lifting wedge guiding seat; 3320, wedge guiding block; 333, linear servo drive assembly; 334, reset member

[0060] 400, vision alignment detection device; 410, camera acquisition module; 420, image processing module; 421, film edge extraction module; 422, screen reference extraction module; 423, position offset calculation module

[0061] 500, frame<�

[0062] 600, Adsorption conveying device; 610a, Front adsorption conveying module; 610b, Rear adsorption conveying module; 611, Vacuum adsorption roller; 612, Feeding drive assembly; 620, Deviation correction detection module; 630, First deviation correction execution module; 631, Deviation correction mounting seat; 632, Deviation correction drive assembly; 640, Second deviation correction execution module; 641, Pressing wheel assembly; 6410, Pressing wheel abutting mechanism; 6411, Bouncing drive member; 6412, Roller body; 6413, Roller mounting seat; 642, Fixed frame; 650, Third deviation correction execution module; 651, Patting deviation correction assembly; 6510, Patting plate; 6511, Patting drive member; 6, Auxiliary conveying roller module;

[0063] X, Ink scraping direction; Y, Material conveying direction; Z, Vertical direction. Detailed implementation manners

[0064] The following will describe in detail the specific implementation manners of the present application in conjunction with the accompanying drawings. It should be understood that the specific implementation manners described herein are only used to illustrate and explain the present application, and are not used to limit the present application.

[0065] The present application will be described in detail below with reference to the accompanying drawings and in conjunction with exemplary embodiments.

[0066] Embodiment

[0067] Please refer to Figure 1 and Figure 2 , This embodiment provides a printing device, including a frame 500 and a registration adjustment device 200, a screen printing lifting platform device 300, and a screen printing device 100 arranged in sequence along the vertical direction Z. Among them, the registration adjustment device 200, the screen printing lifting platform device 300, and the screen printing device 100 are arranged in sequence from bottom to top.

[0068] Specifically, the registration adjustment device 200 is arranged on the frame 500 and below the screen printing device 100. The registration adjustment device 200 is connected to the screen printing device 100, and a printing space is formed between the screen printing device 100 and the registration adjustment device 200. The screen printing lifting platform device 300 is arranged on the frame 500 and in the printing space.

[0069] Thus, the alignment adjustment device 200 can drive the screen printing device 100 to perform alignment adjustment. In this embodiment, the alignment adjustment device 200 can drive the screen printing device 100 to move and adjust in the X-axis direction, move and adjust in the Y-axis direction, lift and lower in the Z-axis direction, and rotate in the θ-axis direction. It can be understood that during the alignment adjustment process, the screen printing lifting platform device 300 is stationary, and the screen printing device 100 does not contact the material to be printed. When performing screen printing, the support surface of the screen printing lifting platform device 300 will rise and support the material to be printed, so as to avoid the material to be printed being pulled or wrinkled during the printing process and ensure the printing quality.

[0070] In this embodiment, the alignment adjustment device 200 directly performs alignment adjustment on the screen printing device 100. The screen printing device 100 only contacts the material during printing, and the screen printing lifting platform device 300 abuts against the material to be printed through lifting to provide support for the material. Therefore, when performing alignment adjustment before printing, only the screen printing device 100 needs to be adjusted through alignment, and the screen printing lifting platform does not need to be aligned, thus not affecting the conveying of the material. In this way, it is suitable for printing long-span or roll material films, ensuring the printing quality, and can provide high-precision adaptation for subsequent automatic cutting and other processes.

[0071] In addition, the alignment adjustment device 200 is arranged below the screen printing device 100, making reasonable use of the installation space, with a more compact structure and more convenient manual calibration. And the up-and-down arrangement can make the center of gravity of the alignment adjustment device 200 and the screen printing device 100 move downward, reducing the weight of the screen printing device 100, thus reducing the influence brought by high-speed printing vibration and further improving the printing accuracy and quality.

[0072] Please refer to Figure 2 and Figure 3 As shown in the figure, the above-mentioned screen printing device 100 includes a screen mounting frame 110, a screen module 120, a squeegee module 130, a screen printing drive module 140, and a stripping and lifting module 150. The screen mounting frame 110 is connected to the alignment adjustment device 200 arranged below, and the screen module 120, the squeegee module 130, the screen printing drive module 140, and the stripping and lifting module 150 are all arranged on the screen mounting frame 110.

[0073] The screen mounting frame 110 is of a frame structure, and the middle area is a hollow area corresponding to the screen printing lifting platform device 300. The screen module 120 is movably arranged on the screen mounting frame 110 and is located in the middle area of the screen mounting frame 110 to facilitate printing on the material on the screen printing lifting platform device 300.

[0074] In this embodiment, one end of the screen printing module 120 along the ink scraping direction X is pivotally connected to the screen printing mounting frame 110, and the other end is a movable end. Thus, the screen printing module 120 can rotate around the pivot connection.

[0075] The squeegee module 130 is movably disposed on the screen printing mounting frame 110 along the ink scraping direction X and is located above the screen printing module 120. The screen printing driving module 140 is disposed on the screen printing mounting frame 110 and is drivingly connected to the squeegee module 130. Thus, by driving the squeegee module 130 to move along the ink scraping direction X by the screen printing driving module 140, the ink can be evenly scraped onto the screen printing module 120.

[0076] For the screen printing squeegee pressure control in the squeegee module 130, two groups of pressure sensors on the left and right are used to detect and feedback the printing pressure during printing, and fine adjustment and precise control of the pressure are performed, which can ensure a constant printing pressure, ensure the printing effect, ink thickness, and dimensional accuracy.

[0077] In this embodiment, the screen printing driving module 140 includes a motor that provides power and a mechanical transmission mechanism that converts the rotational motion of the motor into a linear motion. Optionally, the mechanical transmission mechanism can be a sprocket chain transmission mechanism, a lead screw nut transmission mechanism, a pulley belt transmission mechanism, etc. Among them, when the sprocket chain transmission mechanism is selected, the squeegee module 130 is connected to the chain and is linearly moved by the traction of the chain; when the lead screw nut transmission mechanism is selected, the squeegee module 130 is connected to the transmission nut, and the linear motion of the transmission nut drives the squeegee module 130 to move; when the pulley belt transmission mechanism is selected, the squeegee module 130 is connected to the belt and is linearly moved by the traction of the belt. It should be understood that the above are only examples and do not limit the protection scope of the present application.

[0078] The off-contact lifting module 150 is disposed on the screen printing mounting frame 110 and is connected to the movable end of the screen printing module 120. The off-contact lifting module 150 can drive the screen printing module 120 to rotate around the pivot connection by outputting lifting and lowering actions along the vertical direction Z, and can adjust the inclination angle of the screen printing module 120 relative to the horizontal plane.

[0079] It can be understood that when the ink is thinner, the viscosity of the ink is low at this time and the fluidity is relatively large. Thus, when the squeegee module 130 scrapes the ink (the ink scraping direction X is from the movable end to the pivot connection end of the screen printing module 120), the off-contact lifting module 150 is controlled to drive the movable end of the screen printing module 120 to lift. At this time, the screen printing module 120 tilts at a certain angle towards the pivot connection end, so that the ink flows towards the pivot connection end of the screen printing module 120, thereby preventing the ink from flowing back and improving the printing quality.

[0080] In this embodiment, the lifting speed of the off-grid lifting module 150 is positively correlated with the ink scraping movement speed of the screen printing driving module 140 driving the squeegee module 130. So that the ink flow speed is synchronized with the speed of the squeegee module 130, ensuring smooth ink flow, and thus ensuring uniform ink scraping on the screen plate module 120.

[0081] Please refer to Figure 4 , specifically, the off-grid lifting module 150 includes a lifting drive assembly 151 and a movable hinge assembly 152. The lifting drive assembly 151 is arranged on the screen plate mounting frame 110 and close to the movable end of the screen plate module 120. The lifting drive assembly 151 can output a lifting movement along the vertical direction Z (corresponding to lifting and lowering). The movable hinge assembly 152 has a movable hinge joint 1522. One end of the movable hinge assembly 152 is connected to the lifting drive assembly 151, and the other end is connected to the movable end of the screen plate module 120. By connecting the lifting drive assembly 151 and the screen plate module 120 through the movable hinge assembly 152, during the lifting process of the screen plate module 120, the movable hinge assembly 152 adapts through the rotation freedom of its own movable hinge joint 1522, thus avoiding problems such as jamming during the lifting process of the screen plate module 120.

[0082] Please refer to Figure 3 and Figure 4 , the movable hinge assembly 152 includes a first lifting member 1520 and a second lifting member 1521. The first lifting member 1520 and the second lifting member 1521 are connected by a hinge to form the movable hinge joint 1522. One end of the first lifting member 1520 away from the movable hinge joint 1522 is connected to the screen plate module 120, and one end of the second lifting member 1521 away from the movable hinge joint 1522 is connected to the output end of the lifting drive assembly 151.

[0083] Optionally, the lifting drive assembly 151 can be selected as an oil cylinder, an electric cylinder, a motor screw rod or a linear motor, etc. It should be understood that the above are only examples and do not limit the protection scope of this application.

[0084] Please refer to Figure 1 and Figure 7 , further, the printing equipment further includes a vision alignment detection device 400. The vision alignment detection device 400 is arranged on one side of the screen printing lifting platform device 300 and is linked and coordinated with the alignment adjustment device 200. The vision alignment detection device 400 is used to detect whether the material to be printed (film material) is offset, and after the offset occurs, it feeds back to the control system, and then the control system controls the alignment adjustment device 200 to perform alignment adjustment.

[0085] The above-mentioned visual alignment detection device 400 mainly has two functions. Function 1: Grab the edge of the transparent film and perform edge alignment of the film material. Function 2: Grab the fiducial point of the film material and the fiducial point of the screen module 120 of the screen, perform fiducial point position matching, and perform fiducial alignment of the film material to achieve the overprint mode.

[0086] Specifically, the visual alignment detection device 400 includes a camera acquisition module 410 and an image processing module 420. The image processing module 420 is electrically connected to the camera acquisition module 410. The image processing module 420 includes a film material edge extraction module 421, a screen fiducial extraction module 422, and a position offset calculation module 423 based on the film material edge data and the screen fiducial point.

[0087] When performing edge alignment printing of the film material, only the camera, lens in the camera acquisition module 410, the prism bottom light source, and the strip backlight can cooperate to achieve the function of stably grabbing the film material (applicable to transparent film materials). The image processing module 420 then grabs the fiducial position of the screen according to the image information captured by the camera (the visual alignment detection device 400 can capture the screen fiducial point and the film material fiducial point up and down). The position offset calculation module 423 calculates the deviation position degrees of the film material and the screen pattern in the X, Y, and θ directions. Then, the alignment adjustment device 200 automatically corrects and adjusts the screen position according to the calculated deviation position degrees in the X, Y, and θ directions to make the screen and the film material correspond. For printing with special requirements, secondary re-verification after correction can also be realized to re-check whether the screen and the film material are aligned. The principle during overprinting is the same as that of the edge alignment printing mode.

[0088] Please refer to Figure 2 and Figure 5 As shown in the figure, the above-mentioned alignment adjustment device 200 includes an alignment platform module 210 and a Z-axis lifting module 220; the alignment platform module 210 has degrees of freedom of movement in the X-axis, Y-axis, and θ-axis rotation. The Z-axis lifting module 220 is arranged on the alignment platform module 210, and the lifting end of the Z-axis lifting module 220 is connected to the screen mounting frame 110 of the screen printing device 100.

[0089] Specifically, the alignment platform module 210 includes a platform base, an X-axis drive assembly, a Y-axis drive assembly, and a θ-axis rotation assembly. The X-axis drive assembly is disposed on the platform base and can output a linear motion along the X-axis direction (in this embodiment, it is defined that the X-axis direction is the same as the ink scraping direction X). The Y-axis drive assembly is disposed on the X-axis drive assembly. The X-axis drive assembly can drive the Y-axis drive assembly to move along the X-axis direction, and the Y-axis drive assembly can output a linear motion along the Y-axis direction. The θ-axis rotation assembly is disposed on the Y-axis drive assembly. Thus, both the Y-axis drive assembly and the X-axis drive assembly can drive the θ-axis rotation assembly to move in the corresponding Y-axis direction or X-axis direction, and the θ-axis rotation assembly can output a rotational motion about the θ-axis. The Z-axis lifting module 220 is integrally disposed on the θ-axis rotation assembly and can be driven by the θ-axis rotation assembly to rotate, where the θ-axis is parallel to the Z-axis.

[0090] Optionally, the X-axis drive assembly and the Y-axis drive assembly can be selected from oil cylinders, air cylinders, electric cylinders, motor lead screws, or linear motors, etc. The θ-axis rotation assembly can use a motor to provide power. And in order to save space in the Z direction, the motor in the θ-axis rotation assembly is arranged horizontally and drives the Z-axis lifting module 220 to rotate through a gear transmission mechanism.

[0091] The Z-axis lifting module 220 includes a Z-axis lifting frame 221, a Z-axis drive assembly 222, and Z-axis lifting rods 223. The Z-axis lifting frame 221 is disposed on the θ-axis rotation assembly, and the θ-axis rotation assembly drives the Z-axis lifting frame 221 to rotate. The Z-axis drive assembly 222 is disposed on the Z-axis lifting frame 221. A plurality of Z-axis lifting rods 223 are arranged around the Z-axis lifting frame 221. The Z-axis lifting rods 223 are in transmission connection with the Z-axis drive assembly 222 through a mechanical transmission mechanism. The upper ends of the Z-axis lifting rods 223 are connected to the screen mounting frame 110. The Z-axis drive assembly 222 drives the Z-axis lifting rods 223 to lift through a mechanical transmission mechanism.

[0092] In this embodiment, the Z-axis lifting rods 223 are lead screws, and the Z-axis lifting frame 221 is provided with nut sleeves that cooperate with the lead screws. The Z-axis drive assembly 222 drives the nut sleeves to rotate through a mechanical transmission mechanism, thereby driving the Z-axis lifting rods 223 to lift.

[0093] Optionally, the Z-axis drive assembly 222 includes a drive motor. The drive motor in the Z-axis drive assembly 222 can drive the nut sleeves to rotate through a mechanical transmission mechanism such as a belt transmission mechanism or a chain transmission mechanism.

[0094] Please refer to Figure 2 and Figure 6, the above-mentioned screen printing lifting platform device 300 includes a vacuum adsorption platform 310, a platform base 320, and a lifting servo module 330. The vacuum adsorption platform 310 has a bearing support surface, and an adsorption mesh hole group is provided on the bearing support surface; the platform base 320 is arranged below the vacuum adsorption platform 310; the lifting servo module 330 is arranged on the platform base 320, and the driving end of the lifting servo module 330 faces the side of the vacuum adsorption platform 310 facing the platform base 320.

[0095] Specifically, the vacuum adsorption platform 310 includes a vacuum platform body and a sealing plate. A groove is recessed on one side of the vacuum platform body, and one side of the vacuum platform body is the bearing support surface. The adsorption mesh hole group on the bearing support surface communicates with the groove. The sealing plate is installed on the notch side of the groove of the vacuum platform body through a sealing ring to seal the groove, thereby forming a vacuum chamber for connecting an external vacuum generating device.

[0096] Furthermore, a plurality of spaced ribs are provided at the bottom of the groove, and the plurality of spaced ribs divide the groove into a plurality of interconnected sub-grooves, so as to ensure that the negative pressure formed during the operation of each sub-groove area is consistent, thereby ensuring the consistency of the adsorption of the film material.

[0097] Optionally, in order to ensure that the film material does not deform under vacuum adsorption, the vacuum adsorption force of the vacuum adsorption platform 310 can be adjusted for adaptation. Of course, the aperture of the mesh holes in the adsorption mesh hole group can also be designed to be less than or equal to 0.6 mm.

[0098] The lifting servo module 330 includes a guiding track 331, a lifting wedge guiding seat 332, a linear servo driving component 333, and a resetting member 334. There are two guiding tracks 331, and the two guiding tracks 331 are arranged in parallel on the platform base 320.

[0099] The lifting wedge guiding seat 332 is slidably arranged on the guiding track 331. At least four wedge guiding blocks 3320 are provided on the side of the lifting wedge guiding seat 332 facing away from the guiding track 331. In this embodiment, four wedge guiding blocks 3320 are arranged at the four corners of the lifting wedge guiding seat 332. And a contact portion 311 that abuts against the wedge guiding blocks 3320 is provided on the side of the vacuum adsorption platform 310 facing the platform base 320. It can be understood that when the lifting wedge guiding seat 332 moves along the guiding track 331 in the lifting direction, the four wedge guiding blocks 3320 on the lifting wedge guiding seat 332 all abut against the contact portion 311 to lift the entire vacuum adsorption platform 310 by a preset height. When the printing is completed, the vacuum adsorption platform 310 needs to descend. At this time, the lifting wedge guiding seat 332 is controlled to move along the guiding track 331 in the opposite direction of the lifting direction, and the vacuum adsorption platform 310 can descend by its own gravity.

[0100] Further, a contact roller is provided on the contact portion 311, and the contact roller is in rolling contact with the wedge-shaped guide surface of the wedge-shaped guide block 3320 to reduce the frictional force.

[0101] The linear servo drive assembly 333 is disposed on the platform base 320 and is drivingly connected to the lifting wedge-shaped guide base 332. Thus, the movement direction of the lifting wedge-shaped guide base 332 along the guide rail 331 is controlled by the linear servo drive assembly 333. In this embodiment, the linear servo drive assembly 333 is horizontally arranged to save the installation space and make the structural layout more compact.

[0102] Optionally, the linear servo drive assembly 333 can be selected from an oil cylinder, a pneumatic cylinder, an electric cylinder, a linear motor, a motor screw rod, etc. It should be understood that the above is only an example and does not limit the protection scope of the present application.

[0103] One end of the reset member 334 is connected to the platform base 320, and the other end is connected to the vacuum adsorption platform 310. The reset member 334 provides an elastic pulling force between the platform base 320 and the vacuum adsorption platform 310 to ensure that the vacuum adsorption platform 310 raised to a preset height can be smoothly and quickly reset, and at the same time, it can also ensure the stable lifting of the vacuum adsorption platform 310.

[0104] Optionally, the reset member 334 is an elastic member, such as a tension spring or an elastic cord, etc.

[0105] Please refer to Figure 1 、 Figure 8 and Figure 9 , in this embodiment, the printing device further includes an adsorption and conveying device 600, and the adsorption and conveying device 600 includes a front adsorption and conveying module 610a and a rear adsorption and conveying module 610b. Among them, the front adsorption and conveying module 610a is arranged on the feeding side of the screen printing lifting platform device 300; the rear adsorption and conveying module 610b is arranged on the discharging side of the screen printing lifting platform device 300.

[0106] Among them, both the front adsorption and conveying module 610a and the rear adsorption and conveying module 610b include a vacuum adsorption roller 611 and a feeding drive assembly 612 for driving the vacuum adsorption roller 611 to rotate. In this embodiment, the roller body of the vacuum adsorption roller 611 is coated with a non-constant air-permeable nickel mesh to prevent the deformation of the ultra-thin film material during adsorption and ensure the adsorption force at the same time.

[0107] Please refer to Figure 9 and Figure 10 , the adsorption and conveying device 600 further includes a deviation correction detection module 620, and the deviation correction detection module 620 is provided on both the front adsorption and conveying module 610a and the rear adsorption and conveying module 610b, and the deviation correction detection module 620 is arranged on one side of the corresponding vacuum adsorption roller 611.

[0108] Among them, the adsorption and conveying device 600 further includes a first deviation rectification execution module 630. The front adsorption and conveying module 610a and the rear adsorption and conveying module 610b are both correspondingly provided with a first deviation rectification execution module 630. The first deviation rectification execution module 630 includes a deviation rectification mounting seat 631 and a deviation rectification driving component 632. The deviation rectification mounting seat 631 is slidably arranged along the axial direction of the vacuum adsorption roller 611. The corresponding front adsorption and conveying module 610a or rear adsorption and conveying module 610b is mounted on the deviation rectification mounting seat 631, and the deviation rectification driving component 632 is drivingly connected to the deviation rectification mounting seat 631.

[0109] Optionally, the deviation rectification driving component 632 can be selected as an oil cylinder, an electric cylinder, a motor screw rod, a linear motor, etc. It should be understood that the above are only examples and do not limit the protection scope of the present application.

[0110] Please refer to Figure 9 、 Figure 10 and Figure 11 In some embodiments, the adsorption and conveying device 600 further includes a second deviation rectification execution module 640. The front adsorption and conveying module 610a and the rear adsorption and conveying module 610b are both correspondingly provided with a second deviation rectification execution module 640. The second deviation rectification execution module 640 includes a fixing frame 642 and pressing wheel assemblies 641 arranged at both ends of the corresponding vacuum adsorption roller 611. The pressing wheel assemblies 641 are mounted on the fixing frame 642. The pressing wheel assemblies 641 include at least three pressing wheel abutting mechanisms 6410 distributed circumferentially along the vacuum adsorption roller 611.

[0111] It can be understood that the air pressure inside the vacuum adsorption roller 611 can be controlled, and the pressing force of the pressing wheel assemblies 641 on the film material can be controlled. In this way, by adjusting the different pressing forces of the pressing wheel assemblies 641 at both ends of the vacuum adsorption roller 611 on the film material, the linear speeds of the film materials at both ends of the vacuum adsorption roller 611 are made to have different followabilities with the vacuum adsorption roller 611. Specifically, if the pressing wheel assembly 641 at one end of the vacuum adsorption roller 611 is pressed tightly and the pressing wheel assembly 641 at the other end is pressed loosely, when the negative pressure inside the vacuum adsorption roller 611 is reduced or cancelled, the film material at the tightly pressed end can slip relative to the vacuum adsorption roller 611. Therefore, the conveying speeds of the film materials at both ends of the vacuum adsorption roller 611 deviate, realizing the deviation rectification function. Of course, in some embodiments, a transverse driving mechanism can be arranged to drive the pressing wheel assemblies 641 at both ends of the vacuum adsorption roller 611 to move transversely for further deviation rectification.

[0112] Please refer to Figure 12, the pressing wheel assembly 641 further includes a roller mounting base 6413, and the roller mounting base 6413 is disposed on the fixing frame 642 (such as welded or detachably connected by bolts). At least three pressing wheel abutting mechanisms 6410 are all mounted on the roller mounting base 6413. Among them, each pressing wheel abutting mechanism 6410 includes a bouncing driving member 6411 and a roller body 6412. The bouncing driving member 6411 is disposed on the roller mounting base 6413, and the roller body 6412 is rotatably disposed at the output end of the bouncing driving member 6411. The bouncing driving member 6411 can drive the roller body 6412 to extend or retract to control the roller body 6412 to selectively contact the film material on the vacuum adsorption roller 611.

[0113] It should also be noted that considering the production and assembly errors, etc. in the three pressing wheel abutting mechanisms 6410 in the pressing wheel assembly 641, it will cause the linear velocities of the roller bodies 6412 in the three pressing wheel abutting mechanisms 6410 to be inconsistent after pressing the film. If the roller bodies 6412 do not bounce, the film material between the three pressing wheel abutting mechanisms 6410 is likely to wrinkle due to the inconsistent linear velocities. However, if they bounce in sequence (realize bouncing by controlling the extension / retraction of the roller bodies 6412), the influence caused by the inconsistent linear velocities of the three pressing wheel abutting mechanisms 6410 can be eliminated in a short time. Thus, when the adsorption and conveying device 600 works normally, at least three pressing wheel abutting mechanisms 6410 in the pressing wheel assembly 641 take turns to abut the film material on the vacuum adsorption roller 611.

[0114] Optionally, the bouncing driving member 6411 can be selected as a cylinder, and the action of the cylinder is controlled by a pneumatic valve.

[0115] Please refer to Figure 13 , in some other embodiments, the adsorption and conveying device 600 further includes a third deviation rectifying execution module 650. The front adsorption and conveying module 610a and the rear adsorption and conveying module 610b are both correspondingly provided with a third deviation rectifying execution module 650. The third deviation rectifying execution module 650 includes a flapping deviation rectifying component 651 arranged in alignment along the axis direction of the corresponding vacuum adsorption roller 611. A space for the material to pass through is formed between the two flapping deviation rectifying components 651 arranged in alignment. The flapping deviation rectifying component 651 includes a flapping driving member 6511 and a flapping plate 6510. The flapping driving member 6511 is connected to the flapping plate 6510, and the flapping action is realized by controlling the flapping plate 6510 through the telescopic movement output by the flapping driving member 6511. Thus, by flapping the side of the film material, the axial movement of the film material relative to the vacuum adsorption roller 611 is caused to perform deviation rectification.

[0116] Optionally, the flapping driving member 6511 can be selected as a cylinder, and the action of the cylinder is controlled by a pneumatic valve.

[0117] Please refer to Figure 8 and Figure 9, in some embodiments, the adsorption and conveying device 600 further includes at least one auxiliary conveying roller module 660 arranged between the front adsorption and conveying module 610a and the rear adsorption and conveying module 610b. The auxiliary conveying roller module 660 is used to support the film material spanning the front adsorption and conveying module 610a and the rear adsorption and conveying module 610b, so as to avoid wrinkles or offsets caused by too large a span in the film material conveying.

[0118] It should be noted that in this application, unless otherwise stated, the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing this application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to this application.

[0119] In the description of this application, it should be understood that the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of this application, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise specifically defined.

[0120] In this application, unless otherwise clearly specified and limited, the terms "install", "connect", "couple", "fix", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection, an electrical connection, or communicable with each other; it can be directly connected, or indirectly connected through an intermediate medium, and can be the communication inside two elements or the interaction relationship between two elements, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0121] In the description of this specification, the descriptions referring to terms such as "one embodiment", "some embodiments", "examples", "specific examples", or "some examples", etc., mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0122] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present application. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present application.

Claims

1. A printing device, characterized in that, It includes an alignment adjustment device (200), a screen printing lifting platform device (300), and a screen printing device (100) arranged successively along the vertical direction (Z); The alignment adjustment device (200) is arranged below the screen printing device (100) and connected to the screen printing device (100), and a printing space is formed between the screen printing device (100) and the alignment adjustment device (200); The screen printing lifting platform device (300) is arranged in the printing space.

2. The printing device according to claim 1, wherein The screen printing device (100) includes: A screen mounting frame (110), connected to the alignment adjustment device (200); A screen module (120), arranged on the screen mounting frame (110), one end of the screen module (120) along the ink scraping direction (X) is pivotally connected to the screen mounting frame (110), and the other end is a movable end; A squeegee module (130), movably arranged on the screen mounting frame (110) along the ink scraping direction (X) and located above the screen module (120); A screen printing drive module (140), arranged on the screen mounting frame (110) and drivingly connected to the squeegee module (130); and A off-contact lifting module (150), arranged on the screen mounting frame (110) and connected to the movable end of the screen module (120).

3. The printing device according to claim 2, characterized in that The lifting speed of the off-contact lifting module (150) is positively correlated with the ink scraping movement speed of the squeegee module (130) driven by the screen printing drive module (140).

4. The printing device according to claim 2, wherein The off-contact lifting module (150) includes: A lifting drive assembly (151), arranged on the screen mounting frame (110) and close to the movable end of the screen module (120); and A movable hinge assembly (152), having a movable hinge joint (1522), one end of the movable hinge assembly (152) is connected to the lifting drive assembly (151), and the other end is connected to the movable end of the screen module (120).

5. The printing device according to claim 1, characterized in that, The printing equipment further includes a visual alignment detection device (400), and the visual alignment detection device (400) is arranged on one side of the screen printing lifting platform device (300) and is in linkage cooperation with the alignment adjustment device (200).

6. The printing device according to claim 5, characterized in that, The visual alignment detection device (400) includes: A camera acquisition module (410); and An image processing module (420), electrically connected to the camera acquisition module (410), and the image processing module (420) includes a film edge extraction module (421), a screen reference extraction module (422), and a position offset calculation module (423) based on the film edge data and the screen reference points.

7. The printing device according to claim 1, characterized in that The alignment adjustment device (200) includes: An alignment platform module (210), having degrees of freedom of movement in the X-axis, Y-axis, and θ-axis rotation; and A Z-axis lifting module (220), arranged on the alignment platform module (210), and the lifting end of the Z-axis lifting module (220) is connected to the screen printing device (100).

8. The printing device according to claim 1, characterized in that The screen printing lifting platform device (300) includes: Vacuum adsorption platform (310), having a bearing support surface, and an adsorption mesh hole group is provided on the bearing support surface; Platform base (320), arranged below the vacuum adsorption platform (310); and Lifting servo module (330), arranged on the platform base (320), and the driving end of the lifting servo module (330) is arranged towards the side of the vacuum adsorption platform (310) facing the platform base (320).

9. The printing device according to claim 8, characterized in that, The lifting servo module (330) includes: Guide rail (331), arranged on the platform base (320); Lifting wedge-shaped guide block (3320), slidably arranged on the guide rail (331), wherein an abutting portion (311) that abuts against the wedge-shaped pushing surface of the lifting wedge-shaped guide block (3320) is provided on the side of the vacuum adsorption platform (310) facing the platform base (320); Linear servo drive assembly (333), arranged on the platform base (320) and drivingly connected to the lifting wedge-shaped guide block (3320); and Resetting member (334), one end connected to the platform base (320) and the other end connected to the vacuum adsorption platform (310).

10. The printing device according to claim 1, characterized in that, The printing device further includes an adsorption conveying device (600), and the adsorption conveying device (600) includes: Front adsorption conveying module (610a), arranged on the feeding side of the screen printing lifting platform device (300); and Rear adsorption conveying module (610b), arranged on the discharging side of the screen printing lifting platform device (300); Wherein, both the front adsorption conveying module (610a) and the rear adsorption conveying module (610b) include a vacuum adsorption roller (611) and a feeding drive assembly (612) for driving the vacuum adsorption roller (611) to rotate.

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