Screen adjusting assembly and printing device

Abstract

The embodiment of the utility model discloses a screen adjusting assembly, and relates to the technical field of battery processing, the screen adjusting assembly comprises a base, a screen frame used for installing a printing screen, a plurality of connecting parts and two linear motors, through holes are oppositely formed in the center of the base and the center of the screen frame, the screen frame is rotatably installed on the base through the plurality of connecting parts, and the two linear motors are arranged on the base. The two linear motors each comprise a stator and a rotor, the two stators are arranged at different positions of the base respectively, the two rotors are arranged at different positions of the screen printing plate frame respectively, and the stator and the rotor which belong to the same linear motor correspond in position. The two linear motors are used, the precision of adjusting the printing screen is improved, the linear motor with the rotor and the stator is used for directly driving the screen frame to rotate relative to the base, the situation that a transmission mechanism assists the linear motors is avoided, the precision of adjusting the printing screen is further improved, the overall structure of the screen adjusting assembly is simplified, and the cost is reduced. And the screen adjusting assembly is convenient to assemble and maintain.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of battery processing, in particular to a screen adjustment assembly and a printing device. BACKGROUND

[0002] In the production process of battery assemblies, it is necessary to print conductive materials on the surface of battery pieces to form grid lines for collecting current. At present, the industry mostly uses silk-screen printing to form grid lines on the surface of battery pieces. Before printing, the printing screen needs to be adjusted by a screen adjustment assembly to accurately align the printing screen with the battery piece, so as to ensure good printing quality.

[0003] The existing screen adjustment assembly usually uses straight-line modules, cross-slideways and other components as transmission mechanisms, which have large errors. When assembling and maintaining, many components need to be disassembled and assembled, which takes a long time and delays production. CONTENT OF THE UTILITY MODEL

[0004] The present application aims to at least solve one of the technical problems existing in the prior art. To this end, the present application provides a screen adjustment assembly and a printing device, which solve the problem of complex structure of the screen adjustment assembly in the prior art.

[0005] The purpose of the present application can be achieved by the following technical solutions:

[0006] In a first aspect, the present application provides a screen adjustment assembly, which comprises a base, a screen frame for mounting a printing screen, a plurality of connecting parts, and two linear motors. The center of the base and the center of the screen frame are both provided with a through hole. The screen frame is rotatably mounted on the base through the plurality of connecting parts. The two linear motors each comprise a stator and a mover. The two stators are arranged at different positions of the base, and the two movers are arranged at different positions of the screen frame. The stator and the mover of the same linear motor are positionally corresponding.

[0007] By using two linear motors, the accuracy of adjusting the printing screen is improved. The linear motor with only a mover and a stator directly drives the rotation of the screen frame relative to the base, so that the relative rotation between the screen frame and the base does not need other transmission mechanisms to assist the linear motor. This reduces the error caused by the transmission mechanism and improves the accuracy of adjusting the printing screen. Moreover, the overall structure of the screen adjustment assembly is simplified, which facilitates the assembly and maintenance of the screen adjustment assembly.

[0008] Optionally, the two linear motors are symmetrically arranged on both sides of the through hole.

[0009] The symmetrically arranged linear motors can cancel out the radial pulling force, so that there is basically no problem of unilateral magnetic pulling force, thereby ensuring the safety and efficiency of the linear motor and improving the stability of the rotation of the screen frame relative to the base.

[0010] Optionally, the connecting part comprises an arc-shaped guide rail and a guide rail slider matched with the arc-shaped guide rail, the extension trajectory of the arc-shaped guide rail and the moving trajectory of the mover are respectively on the horizontal concentric circle, the arc-shaped guide rail is arranged on one of the base and the screen frame, and the guide rail slider is arranged on the other one of the base and the screen frame.

[0011] By arranging the arc-shaped guide rail and the guide rail slider, the relative rotation of the screen frame and the base is guided, and the stability of the relative rotation of the screen frame and the base is further improved.

[0012] Optionally, the connecting part further comprises a hanging wheel assembly, the hanging wheel assembly is arranged opposite to the arc-shaped guide rail on both sides of the through hole, the hanging wheel assembly comprises a hanging wheel seat, a first column of hanging wheels and a second column of hanging wheels rotatably arranged on the hanging wheel seat, the first column of hanging wheels and the second column of hanging wheels each comprise at least one hanging wheel, and wherein:

[0013] The hanging wheel seat is fixedly arranged on the base, the edge of the upper surface of the screen frame is tangent to the circumferential side surface of the first column of hanging wheels, and the edge of the lower surface of the screen frame is tangent to the circumferential side surface of the second column of hanging wheels; or,

[0014] The hanging wheel seat is fixedly arranged on the screen frame, the edge of the upper surface of the base is tangent to the circumferential side surface of the first column of hanging wheels, and the edge of the lower surface of the base is tangent to the circumferential side surface of the second column of hanging wheels.

[0015] By arranging the hanging wheel assembly between the base and the screen frame, the screen frame is constrained to approach or move away from the base, the load borne by the linear motor during the rotation of the screen frame relative to the base and the friction between the arc-shaped guide rail and the guide rail slider are reduced, and the smoothness of the relative rotation between the screen frame and the base is improved.

[0016] Optionally, the extension trajectories of the arc-shaped guide rails of the plurality of connecting parts are on the same circle, and at least two arc-shaped guide rails are arranged equidistantly along the same circle.

[0017] The plurality of arc-shaped guide rails are arranged on the same circle, and arranging at least two arc-shaped guide rails equidistantly along the same circle can effectively and uniformly disperse the load of the base, and improve the stability of the relative rotation of the screen frame and the base.

[0018] Optionally, the screen adjusting assembly further comprises a grating ruler and a reading head matched with the grating ruler, one of the grating ruler and the reading head is fixedly installed on the base, and the other one of the grating ruler and the reading head is fixedly installed on the screen frame.

[0019] By arranging the grating ruler and the reading head, the relative displacement of the base and the screen frame can be monitored in real time, so that the driving error of the linear motor can be found in time according to the abnormal monitoring data, and the linear motor can be calibrated or replaced in time by the staff.

[0020] Optionally, the base comprises a linear guide rail, a horizontal movement motor, a base body and a bottom plate each having a through hole, the bottom plate is movably installed on the base body through the linear guide rail, the horizontal movement motor is used to drive the bottom plate to move along the linear guide rail, and the screen frame is rotatably installed to the side of the bottom plate away from the base body through a plurality of connecting parts.

[0021] The base body and the bottom plate each have a through hole, the bottom plate is movably installed on the base body through the linear guide rail, the screen frame is rotatably installed to the side of the bottom plate away from the base body through a plurality of connecting parts, and the horizontal movement motor is used to drive the bottom plate to move along the linear guide rail, so that the position of the printing screen installed on the screen frame is adjusted along the first horizontal direction, and the printing screen and the battery piece are aligned in the first horizontal direction.

[0022] Optionally, the base further comprises at least one limiting part, the limiting part comprises two limiting blocks, a fixed block and two buffer members, the two limiting blocks are installed on one of the base body and the bottom plate along the extension direction of the linear guide rail, the fixed block is fixedly arranged on the other one of the base body and the bottom plate, one end of each of the two buffer members is fixedly installed on the limiting block, and the other end of each of the two buffer members faces the fixed block.

[0023] The limiting block and the fixed block are arranged to limit the relative movement stroke between the base body and the bottom plate, and the buffer member is arranged to prevent hard impact between the limiting block and the fixed block.

[0024] In a second aspect, the application provides a printing device, which comprises a squeegee assembly and the screen adjustment assembly described above, and the squeegee assembly is used to perform a screen printing process to form a grid line on the battery piece.

[0025] Before the printing device in the application performs screen printing by the squeegee assembly, the printing screen on the screen frame can be aligned with the battery piece below by rotating the screen frame relative to the base by the two linear motors, the two linear motors do not need other transmission mechanisms to assist transmission, which reduces the error caused by the transmission mechanism transmission, improves the precision of adjusting the printing screen, and the screen adjustment assembly has a simple overall structure and is convenient to disassemble, maintain and repair.

[0026] Optionally, the squeegee assembly comprises two parallel squeegees, a first lifting mechanism, a constant pressure mechanism and a horizontal movement mechanism, the two squeegees are configured to squeegee two printing areas on the printing screen respectively, the constant pressure mechanism is arranged on the movable end of the first lifting mechanism, the constant pressure mechanism is arranged one by one corresponding to the squeegees, each squeegee is arranged on the corresponding constant pressure mechanism, the first lifting mechanism is configured to drive the two squeegees to lift, the constant pressure mechanism is configured to make the corresponding squeegee contact the printing screen with a predetermined pressure, and the horizontal movement mechanism is configured to drive the squeegee to move horizontally along the horizontal direction to perform squeegee operation.

[0027] By arranging two scrapers in parallel, the corresponding scraper can be adjusted according to the site condition of each printing area, so as to avoid the different grid line depths in different printing areas caused by the fact that a single scraper cannot simultaneously process two printing areas and cannot simultaneously consider the site conditions of different printing areas; and the cooperation of the first lifting mechanism and the constant pressure mechanism enables the scraper to contact the printing screen with a predetermined pressure each time, thereby improving the consistency of the subsequent printing grid line depth. By arranging the horizontal movement mechanism, the horizontal movement mechanism drives the scraper to move horizontally in the horizontal direction for scraping work. BRIEF DESCRIPTION OF DRAWINGS

[0028] The present application will be further described below with reference to the accompanying drawings.

[0029] Figure 1 is a perspective view of a screen adjustment assembly in one embodiment of the present application;

[0030] Figure 2 is a schematic view of the internal structure of the screen adjustment assembly in one embodiment of the present application;

[0031] Figure 3 is a schematic view of the structure of a linear motor in one embodiment of the present application;

[0032] Figure 4 is a schematic view of the structure of a hanging wheel assembly in one embodiment of the present application;

[0033] Figure 5 is a schematic view of the structure of a base in one embodiment of the present application;

[0034] Figure 6 is a schematic view of the structure of a base in one embodiment of the present application;

[0035] Figure 7 is a schematic view of the structure of a limiting portion in one embodiment of the present application;

[0036] Figure 8 is a schematic view of the overall structure of a printing device in one embodiment of the present application;

[0037] Figure 9 is a schematic view of part of a scraper assembly in one embodiment of the present application;

[0038] Figure 10 is a schematic view of the structure of a scraper and related components in one embodiment of the present application;

[0039] Figure 11 is a schematic view of the structure of an ink return blade and related components in one embodiment of the present application.

[0040] BRIEF DESCRIPTION OF DRAWINGS:

[0041] 10, screen adjustment assembly; 101, base; 1011, linear guide rail; 1012, horizontal moving motor; 1013, base body; 1014, bottom plate; 1015, limiting block; 1016, fixed block; 1017, buffer; 102, screen frame; 103, connecting part; 1031, guide rail slider; 1032, arc-shaped guide rail; 1033, hanging wheel seat; 1034, first column of hanging wheels; 1035, second column of hanging wheels; 104, linear motor; 1041, stator; 1042, rotor; 105, through hole; 20, scraper assembly; 201, scraper; 202, first base plate; 203, first lifting mechanism; 2031, first lifting driving part; 2032, connecting plate; 204, constant pressure mechanism; 205, first mounting plate; 206, first sliding rail; 207, scraper mounting frame; 2071, mounting frame body; 2072, fixed strip; 208, rotating shaft; 209, limiting pin; 210, rack; 211, second base plate; 212, second lifting mechanism; 2121, second lifting driving part; 2122, second mounting plate; 213, ink return blade; 214, second sliding rail; 215, horizontal moving mechanism; 2151, ball screw; 2152, screw nut; 2153, servo motor; 2154, third sliding rail; 2155, sliding seat; 216, knob; 1000, printing device. DETAILED DESCRIPTION

[0042] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without creative labor fall within the scope of protection of the present application.

[0043] Please refer to Figures 1-3 As shown in the drawings, in some embodiments, the present application provides a screen adjustment assembly 10, which comprises a base 101, a screen frame 102 for mounting a printing screen, a plurality of connecting parts 103, and two linear motors 104. The center of the base 101 and the screen frame 102 is provided with a through hole 105 penetrating both of them, which is used for the subsequent printing scraper assembly 20 to extend downward to contact the printing screen mounted on the screen frame 102, and accommodate the moving stroke of the scraper 201. The shape of the through hole 105 can be adaptively set according to actual requirements, which is not specifically limited here. The screen frame 102 is rotatably mounted to the base 101 through the plurality of connecting parts 103. The two linear motors 104 each comprise a stator 1041 and a rotor 1042, the two stators 1041 are respectively arranged at different positions of the base 101, the two rotors 1042 are respectively arranged at different positions of the screen frame 102, and the stator 1041 and the rotor 1042 of the same linear motor 104 are positionally corresponding.

[0044] When printing the grid lines on the battery piece, the battery piece is located on the work station below the printing screen plate. By moving the mover 1042 relative to the stator 1041, the screen plate frame 102 can be rotated relative to the base 101 to adjust the angle position of the printing screen plate installed on the screen plate frame 102, so that the printing screen plate is aligned with the battery piece below according to the preset position, so that the subsequent squeegee 201 can print the grid lines on the battery piece according to the accuracy requirements.

[0045] In the present application, the screen plate frame 102 is driven to rotate relative to the base 101 by the two linear motors 104, and the linear motor 104 only has the mover 1042 and the stator 1041. The relative rotation between the screen plate frame 102 and the base 101 does not need to be additionally provided with a transmission mechanism, which reduces the error caused by the transmission mechanism, improves the accuracy of adjusting the printing screen plate, simplifies the overall structure of the screen plate adjusting assembly 10, and facilitates the assembly and maintenance of the screen plate adjusting assembly 10.

[0046] In some embodiments, the two linear motors 104 are symmetrically arranged on both sides of the through hole 105, so that the two linear motors 104 can offset the radial tension that the screen plate frame 102 may generate, thereby reducing the problem of unbalanced magnetic tension that a single motor may generate, to ensure the safety and efficiency of the linear motor 104, further improve the stability of the rotation of the screen plate frame 102 relative to the base 101, and improve the printing effect.

[0047] In some embodiments, the linear motor 104 is an arc-shaped linear motor, and the stator is arc-shaped.

[0048] In some embodiments, the connecting part 103 includes an arc-shaped guide rail 1032 and a guide rail slider 1031 matched with the arc-shaped guide rail 1032. The extension track of the arc-shaped guide rail 1032 and the moving track of the mover 1042 are respectively on the circumferences of the same horizontal concentric circles. Alternatively, the extension track of the arc-shaped guide rail 1032 and the moving track of the mover 1042 are on the same circumference.

[0049] The arc-shaped guide rail 1032 is arranged on one of the base 101 and the screen plate frame 102, and the guide rail slider 1031 is arranged on the other one of the base 101 and the screen plate frame 102.

[0050] In an optional embodiment, the guide rail slider 1031 is fixedly installed on the side of the base 101 opposite to the screen plate frame 102, and the arc-shaped guide rail 1032 is fixedly installed on the side of the screen plate frame 102 facing the base 101. When the mover 1042 moves relative to the mover 1042, the guide rail slider 1031 slides along the extension track of the arc-shaped guide rail 1032 to guide the movement of the screen plate frame 102 relative to the base.

[0051] Specifically, the moving track of the two movers 1042 is in the same circle, and the extending track of the arc-shaped guide rails 1032 of the plurality of connecting parts 103 is also in the same circle, but the moving track of the mover 1042 and the extending track of the arc-shaped guide rail 1032 can be in the same circle or different circles according to the actual installation environment, which is not specifically limited here. The at least two arc-shaped guide rails 1032 are arranged equidistantly along the same circle, so that the arc-shaped guide rails 1032 uniformly disperse the load of the screen frame 102 on the base 101, and the stability of the relative rotation of the screen frame 102 and the base 101 is improved. Preferably, the arc-shaped guide rails 1032 of the plurality of connecting parts 103 are all arranged equidistantly along the same circle.

[0052] Please refer to Figure 4 As shown in the drawings, in some embodiments, the connecting part 103 further comprises a hoisting wheel assembly, which is arranged opposite to the arc-shaped guide rail 1032 on both sides of the through hole 105. The hoisting wheel assembly comprises a hoisting wheel seat 1033, a first column of hoisting wheels 1034 and a second column of hoisting wheels 1035 rotatably arranged on the hoisting wheel seat 1033, and the first column of hoisting wheels 1034 and the second column of hoisting wheels 1035 each comprise at least one hoisting wheel. The hoisting wheel can be a drum-shaped wheel, and the rotation axes of each of the hoisting wheels can all be located in a horizontal plane, wherein:

[0053] In some embodiments, the hoisting wheel seat 1033 is fixedly arranged on the base 101, the edge of the upper surface of the screen frame 102 facing the base 101 is tangent to the circumferential side surface of the first column of hoisting wheels 1034, and the edge of the lower surface of the screen frame 102 is tangent to the circumferential side surface of the second column of hoisting wheels 1035.

[0054] In other embodiments, the hoisting wheel seat 1033 can be fixedly arranged on the screen frame 102, and the two surfaces of the part of the base 101 used for connection are respectively tangent to the circumferential side surfaces of the first column of hoisting wheels 1034 and the second column of hoisting wheels 1035.

[0055] The first column of hoisting wheels 1034 and the second column of hoisting wheels 1035 support and limit the screen frame 102 from both the upper and lower sides, preventing the screen frame 102 from changing the height on one side during the relative rotation with the base 101 or during the screen printing process, which can cause the screen to tilt and even cause production accidents.

[0056] Further, in the radial direction of the moving track of the mover 1042, the hoisting wheel assembly and the guide assembly composed of the arc-shaped guide rail 1032 and the guide rail slider 1031 can be arranged at intervals. Among them, one of the hoisting wheel assembly and the guide assembly can be arranged at the outer edge of the screen frame 102 away from the through hole 105, and the other of the hoisting wheel assembly and the guide assembly is arranged at the inner edge of the screen frame 102 close to the through hole 105, further evenly distributing the constraint force on the screen frame 102, so as to improve the stability of the relative rotation of the screen frame 102 and the base 101.

[0057] In some embodiments, the screen adjustment assembly 10 can further include a grating ruler (not shown) and a reading head (not shown) matched therewith, one of the grating ruler and the reading head is fixedly installed on the base 101, and the other is fixedly installed on the screen frame 102, the relative displacement of the base 101 and the screen frame 102 can be monitored in real time through the reading head, so as to timely find the driving error of the linear motor 104 according to the abnormal monitoring data, so as to calibrate, debug or replace the linear motor 104 in time.

[0058] Referring to Figs. 1 and 2, Figure 5 and Figure 6 In some embodiments, the base 101 includes linear guides 1011, a horizontal moving motor 1012, a base body 1013 and a bottom plate 1014, each of which is provided with a through hole 105. The bottom plate 1014 is movably installed on the base body 1013 through the linear guides 1011. The horizontal moving motor 1012 is used to drive the bottom plate 1014 to move along the linear guides 1011. The screen frame 102 is rotatably installed to the side of the bottom plate 1014 away from the base body 1013 through a plurality of connecting parts 103.

[0059] Specifically, the linear guides 1011 are provided in two, each extending along the first horizontal direction. The two linear guides 1011 are fixedly installed on the side of the bottom plate 1014 close to the base body 1013, and are respectively located on the opposite sides of the through hole 105. The base body 1013 is slidingly installed on the two linear guides 1011 through a sliding block, so that the bottom plate 1014 and the base body 1013 can relatively move along the first horizontal direction. The horizontal moving motor 1012 is a linear motor, having a fixed part and a moving part installed on the base body 1013 and the bottom plate 1014 respectively, and the positions of the fixed part and the moving part correspond. The moving part can move along the first horizontal direction relative to the fixed part, so as to drive the bottom plate 1014 to move horizontally along the first horizontal direction relative to the base body 1013, and further drive the screen frame 102 to move horizontally along the first horizontal direction relative to the base body 1013, so as to subsequently adjust the position of the printing screen installed on the screen frame 102 along the first horizontal direction, and align the printing screen and the battery piece in the first horizontal direction.

[0060] Referring to Figs. 1 and 2, Figure 6 and Figure 7As shown, further, the base 101 further comprises at least one limiting part, which comprises two limiting blocks 1015, a fixed block 1016 and two buffer members 1017. The two limiting blocks 1015 are mounted on one of the base body 1013 and the bottom plate 1014 along the extending direction of the linear guide rail 1011, the fixed block 1016 is fixedly arranged on the other one of the base body 1013 and the bottom plate 1014, and the two limiting blocks 1015 are located on opposite sides of the fixed block 1016, and the two buffer members 1017 correspond to the two limiting blocks 1015 one by one, one end of each buffer member 1017 is fixedly mounted on the corresponding limiting block 1015, and the other end faces the fixed block 1016.

[0061] In an optional embodiment, two limiting parts are arranged, which are respectively located on opposite sides of the through hole 105 and are respectively beside the two linear guide rails 1011.

[0062] In the present application, the movement stroke of the bottom plate 1014 relative to the base body 1013 along the first horizontal direction is limited by cooperation of the two limiting blocks 1015 and the fixed block 1016. The buffer member 1017 is used to buffer between the limiting block 1015 and the fixed block 1016 to avoid hard impact therebetween. Specifically, the buffer member 1017 is of a non-metal material such as rubber or polyurethane, which has a certain elasticity.

[0063] Please refer to Figure 8 As shown, the present application also provides a printing device 1000, which comprises the squeegee assembly 20 and the screen adjustment assembly 10 described above. The squeegee assembly 20 is used to perform screen printing processing to form grid lines on the battery piece.

[0064] The printing device 1000 can adjust the position of the printing screen relative to the battery piece through the screen adjustment assembly 10, and after the position adjustment is accurate, the printing screen is squeegeed through the squeegee assembly 20 to form grid lines on the battery piece.

[0065] Please refer to Figure 9 and Figure 10 As shown, in some embodiments, the squeegee assembly 20 further comprises a first base plate 202, a first lifting mechanism 203 and two squeegee members arranged side by side. Each of the two squeegee members comprises a constant pressure mechanism 204, a first mounting plate 205 and a squeegee 201. The first lifting mechanism 203 is arranged on the first base plate 202, the fixed end of each constant pressure mechanism 204 is mounted on the driving end of the first lifting mechanism 203, and each first mounting plate 205 is fixedly mounted on the movable end of the corresponding constant pressure mechanism 204. The two squeegees 201 are arranged side by side, and each squeegee 201 is rotatably mounted at the lower end of the corresponding first mounting plate 205 along a horizontal rotation axis. The horizontal rotation axis is perpendicular to the extending direction of the blade edge of the squeegee 201.

[0066] In the present application, the two squeegees 201 are configured to squeegee two printing areas on the printing screen, respectively. The two squeegees 201 can rotate relative to the corresponding first mounting plate 205 around a horizontal rotation axis to adjust the posture of each squeegee 201 so that the blade fully matches the printing screen in the corresponding printing area. Compared with using a single squeegee 201 to simultaneously process two printing areas, the two squeegees 201 can be adaptively adjusted according to the on-site conditions of the corresponding printing area, so that each squeegee 201 can squeegee the grid lines with consistent depth in the corresponding printing area, thereby avoiding the subsequent broken line phenomenon.

[0067] The first lifting mechanism 203 drives the two squeegee members to lift, so that the two squeegees 201 can maintain the correct posture to press and contact the printing screen of the corresponding printing area. The constant pressure mechanism 204 is provided with a preset pressure, so that the squeegee 201 can press on the printing screen with a set pressure to ensure the consistency of the printing effect.

[0068] Please refer to Figure 10 In some embodiments, the first lifting mechanism 203 includes a first lifting driving member 2031 and a connecting plate 2032. The first lifting driving member 2031 is fixedly arranged on the first base plate 202, and the connecting plate 2032 is arranged at the driving end of the first lifting driving member 2031. The connecting plate 2032 is generally T-shaped. The fixed ends of each constant pressure mechanism 204 are respectively mounted on the two ends of the connecting plate 2032. The first lifting driving member 2031 can drive the two constant pressure mechanisms 204 to synchronously lift through the connecting plate 2032, and then drive the two squeegees 201 to synchronously lift through the two constant pressure mechanisms 204.

[0069] In some embodiments, the first lifting driving member 2031 is a gas cylinder or a motor + linear module. The constant pressure mechanism 204 is a gas cylinder or a voice coil motor, which can be adjusted by setting the torque of the voice coil motor or the gas pressure of the gas cylinder to adjust the pressure of the squeegee 201 on the screen.

[0070] In some embodiments, the first base plate 202 is provided with a first sliding rail 206 extending in the vertical direction. The first sliding rail 206 is located between the connecting plate 2032 and the first base plate 202. The connecting plate 2032 and the first mounting plate 205 are respectively slidably mounted on the same first sliding rail 206, and the first mounting plate 205 is parallel to and located below the connecting plate 2032. By sharing the first sliding rail 206 by the connecting plate 2032 and the first mounting plate 205, the number of first sliding rails 206 is saved, and the compactness of the structure among the connecting plate 2032, the first mounting plate 205 and the first base plate 202 is improved.

[0071] Further, the first slide rails 206 are arranged in two along the horizontal direction, and the connecting plate 2032 and the first mounting plate 205 are both slidingly mounted on the two first slide rails 206, further improving the stability of the movement of the connecting plate 2032 and the first mounting plate 205.

[0072] Please continue to refer to Figure 6 and Figure 7 As shown in FIGS. 1, 2 and 3, in some embodiments, the squeegee assembly 20 further comprises squeegee mounting frames, which are rotatably mounted on the lower end of the first mounting plate 205 through the rotating shafts 208, and the squeegee 201 is fixedly mounted on the corresponding squeegee mounting frame, avoiding drilling holes on the squeegee 201 that are adapted to the rotating shafts 208, and facilitating the installation of the squeegee 201 on the first mounting plate 205 through the rotating shafts 208.

[0073] In some embodiments, the lower end of the first mounting plate 205 is fixedly mounted with two limiting pins 209, which are respectively arranged on both sides of the rotating shaft 208 and are both located on the rotating path of the squeegee mounting frame, so as to limit the rotating range of the squeegee 201 and avoid the end of the squeegee 201 from hitting the printing screen due to too large rotating angle.

[0074] In some embodiments, a specific structure of the squeegee mounting frame is provided. The squeegee mounting frame comprises a mounting frame body 2071 and a fixed strip 2072 arranged on one side of the mounting frame body 2071, and the squeegee 201 is locked between the mounting frame body 2071 and the fixed strip 2072 through fasteners (such as screws, bolts), facilitating the disassembly and assembly of the squeegee 201.

[0075] In some embodiments, the angle between the squeegee 201 and the horizontal plane of the squeegee direction is 30-75°, and more specifically, the angle between the squeegee 201 and the horizontal plane can be 40°, 45°, 50°, 55°, 60° or 70°, facilitating the squeegee 201 to exert downward force on the paste during the squeegee process, ensuring that the paste stably passes through the leakage hole of the printing screen, and improving the squeegee effect.

[0076] In some embodiments, the squeegee 201 comprises a squeegee plate and an edge extending along the horizontal direction at the lower end of the squeegee plate, and the material of the squeegee plate and the edge is freely selected from carbon fiber and polyurethane.

[0077] Please refer to Figure 9 and Figure 11 As shown in FIGS. 1, 2 and 3, in some embodiments, the squeegee assembly 20 further comprises a rack 210, a second base plate 211, a second lifting mechanism 212 mounted on the second base plate 211, and an ink return blade 213. The second base plate 211 is arranged on one side of the first base plate 202 and is mounted on the rack 210 in parallel with the first base plate 202. The ink return blade 213 is arranged on the driving end of the second lifting mechanism 212, and the second lifting mechanism 212 is configured to drive the ink return blade 213 to lift and lower.

[0078] Specifically, the second lifting mechanism 212 includes a second lifting driving member 2121 and a second mounting plate 2122. The fixed end of the second lifting driving member 2121 is mounted on the second base plate 211, and the upper end of the second mounting plate 2122 is mounted on the driving end of the second lifting driving member 2121. The ink return blade 213 is mounted on the lower end of the second mounting plate 2122, and is used to coat a pulp layer with a predetermined thickness on the surface of the printing screen to facilitate the subsequent scraping of the scraper 201.

[0079] The second base plate 211 is provided with a second sliding rail 214 extending in the vertical direction, and the second mounting plate 2122 is slidingly mounted on the second sliding rail 214 through a sliding block, thereby improving the stability of the movement of the second mounting plate 2122 relative to the second base plate 211.

[0080] In some embodiments, the second lifting driving member 2121 is an electric motor.

[0081] Referring to Figure 8 In some embodiments, the scraper assembly 20 further includes a horizontal moving mechanism 215 configured to drive the scraper 201 to move horizontally along a first horizontal direction for scraping work.

[0082] Specifically, the horizontal moving mechanism 215 includes a ball screw 2151, a screw nut 2152, a servo motor 2153, a third sliding rail 2154, and a sliding seat 2155. The ball screw 2151 extends in the first horizontal direction and is rotatably mounted on the base 101 through bearing seats at both ends. The screw nut 2152 is sleeved on the ball screw 2151 and threadedly drives the ball screw 2151. The third sliding rail 2154 is fixedly mounted on the base 101 and is parallel to the ball screw 2151 and is provided with two rails on both sides of the ball screw 2151. The sliding seat 2155 is fixedly connected with the screw nut 2152 and is slidingly connected with the two third sliding rails 2154 through sliding blocks. The rack 210 is arranged at one end of the sliding seat 2155 and is fixedly connected with the sliding seat 2155. The servo motor 2153 is fixedly mounted on the base 101, the motor shaft of the servo motor 2153 is connected with one end of the ball screw 2151, and the servo motor 2153 drives the ball screw 2151 to rotate, so that the sliding seat 2155 slides along the third sliding rail 2154, thereby driving the ink return blade 213 and the scraper 201 to move along the first horizontal direction to make the ink return blade 213 smear the pulp layer on the printing screen and the scraper 201 perform scraping work. Optionally, a coupling is arranged between the servo motor 2153 and one end of the ball screw 2151 as a transmission member to eliminate the error caused by different shafts.

[0083] The above detailed description merely describes one preferred embodiment of the application, and is not intended to limit the scope of the application. Various changes and modifications to the embodiments described herein will be readily apparent to those skilled in the art, such changes and modifications being equally within the scope of the application.

[0084] It should be noted that the terms "first", "second", and similar terms used herein do not necessarily have any sequence or priority, and are merely used to distinguish different components. The descriptions of "left", "right", "left side", "right side", "upper", "lower", "top", "bottom", and the like in the present application are defined based on the orientation or positional relationship shown in the drawings, and are merely for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the described structure must be constructed and operated in a particular orientation, therefore, it cannot be understood as a limitation to the present application. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise explicitly specified and limited.

[0085] In the description of the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integral connection; it can be directly connected, or indirectly connected through intermediate medium, or internal communication of two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

Claims

1. A screen adjustment assembly, characterized by, The screen adjusting assembly comprises a base, a screen frame for mounting a screen, a plurality of connecting parts, and two linear motors, the base and the screen frame are both provided with a through hole at the center, the screen frame is rotatably mounted to the base through the connecting parts, the two linear motors each comprise a stator and a mover, the two stators are respectively arranged at different positions of the base, the two movers are respectively arranged at different positions of the screen frame, and the stator and the mover of the same linear motor are in position correspondence.

2. The screen adjustment assembly of claim 1, wherein, The two linear motors are symmetrically arranged on both sides of the through hole.

3. The screen adjustment assembly of claim 1, wherein, The connecting part comprises an arc-shaped guide rail and a guide rail slider matched with the arc-shaped guide rail, the extension trajectory of the arc-shaped guide rail and the moving trajectory of the mover are respectively on the horizontal concentric circle, the arc-shaped guide rail is arranged on one of the base and the screen frame, and the guide rail slider is arranged on the other one of the base and the screen frame.

4. The screen adjustment assembly of claim 3, wherein, The connecting part further comprises a lifting wheel assembly, the lifting wheel assembly is arranged opposite to the arc-shaped guide rail on both sides of the through hole, the lifting wheel assembly comprises a lifting wheel seat, a first column of lifting wheels and a second column of lifting wheels rotatably arranged on the lifting wheel seat, and the first column of lifting wheels and the second column of lifting wheels each comprise at least one lifting wheel, wherein: The lifting wheel seat is fixedly arranged on the base, the edge of the upper surface of the screen frame is tangent to the circumferential side of the first column of lifting wheels, and the edge of the lower surface of the screen frame is tangent to the circumferential side of the second column of lifting wheels; or The lifting wheel seat is fixedly arranged on the screen frame, the edge of the upper surface of the base is tangent to the circumferential side of the first column of lifting wheels, and the edge of the lower surface of the base is tangent to the circumferential side of the second column of lifting wheels.

5. The screen adjustment assembly of claim 3, wherein, The extension trajectories of the arc-shaped guide rails of the plurality of connecting parts are on the same circle, and at least two arc-shaped guide rails are arranged equidistantly along the same circle.

6. The screen adjustment assembly of claim 1, wherein, The screen adjusting assembly further comprises a grating ruler and a reading head matched with the grating ruler, one of the grating ruler and the reading head is fixedly mounted on the base, and the other one of the grating ruler and the reading head is fixedly mounted on the screen frame.

7. The screen adjustment assembly of claim 1, wherein, The base comprises a linear guide rail, a horizontal moving motor, a base body and a bottom plate each provided with a through hole, the bottom plate is movably mounted on the base body through the linear guide rail, the horizontal moving motor is used to drive the bottom plate to move along the linear guide rail, and the screen frame is rotatably mounted to the side of the bottom plate away from the base body through the plurality of connecting parts.

8. The screen adjustment assembly of claim 7, wherein, The base further comprises at least one limiting part, the limiting part comprises two limiting blocks, a fixed block and two buffer members, the two limiting blocks are mounted on one of the base body and the bottom plate along the extension direction of the linear guide rail, the fixed block is fixedly arranged on the other one of the base body and the bottom plate, one end of the two buffer members is respectively fixedly mounted on the limiting block, and the other end of the two buffer members faces the fixed block.

9. A printing device characterized by comprising: The printing device comprises a squeegee assembly and the screen adjusting assembly of any one of claims 1 to 8, and the squeegee assembly is used to perform a silk screen printing process to form a grid line on a battery piece.

10. The printing apparatus of claim 9, wherein The scraper assembly comprises two parallelly arranged scrapers, a first lifting mechanism, a constant pressure mechanism and a horizontal moving mechanism, the two scrapers are configured to scrape two printing areas on a printing screen respectively, the constant pressure mechanism is arranged on the movable end of the first lifting mechanism, the constant pressure mechanism is arranged one-to-one with the scrapers, each scraper is arranged on the corresponding constant pressure mechanism, the first lifting mechanism is configured to drive the two scrapers to lift, the constant pressure mechanism is configured to make the corresponding scraper contact the printing screen with a predetermined pressure, and the horizontal moving mechanism is configured to drive the scrapers to horizontally move along the horizontal direction to perform the scraping operation.

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