Screen positioning mechanism and screen printing device

Abstract

The utility model relates to the field of silk-screen printing equipment, and discloses a screen positioning mechanism and a silk-screen printing device.The screen positioning mechanism comprises a screen assembly, a driving assembly and a connecting assembly, the screen assembly comprises a supporting plate and a screen, the driving assembly comprises a moving plate, and the connecting assembly comprises a locking piece; threaded holes in one-to-one correspondence with the locking pieces are formed in one end of the supporting plate, and assembling holes matched with the threaded holes in a one-to-one mode are formed in the movable plate. The locking pieces are in threaded connection with the corresponding assembling holes and threaded holes, so that the supporting plate and the movable plate are fixed, and the screen printing plate is fixed; when the position of the screen needs to be adjusted and controlled, all the locking pieces are unscrewed firstly, due to the fact that the diameter of the assembling holes is larger than that of the threaded holes, the locking pieces can move in the assembling holes in the radial direction in any direction, and all the locking pieces are aligned and screwed after the locking pieces are adjusted in place, so that the supporting plate and the movable plate are fixed, and the screen is located at the expected alignment position. The position of the screen printing plate can be flexibly and conveniently adjusted, and maintenance is convenient.

Description

Technical Field

[0001] This application relates to the field of screen printing equipment, specifically to a screen positioning mechanism and a screen printing apparatus. Background Technology

[0002] For gridless solar cells, a common stringing process is as follows: First, adhesive dots are printed onto the solar cells using a screen printing device. Then, the solar cells with adhesive dots and solder ribbons are laid and stacked according to the stringing rules. After the solar cells and solder ribbons are stacked, the adhesive dots are cured, and the solder ribbons are then bonded to the solar cells to form a solar cell string.

[0003] To ensure high precision and quality in the printing process, the equipment needs to be adjusted first. This involves aligning the screen of the screen printing device so that the incoming solar cells can be positioned correctly based on the screen's position during subsequent printing of the adhesive, thereby ensuring the accuracy of the adhesive dots printed on the solar cells. Therefore, a screen printing device that allows for easy adjustment of the screen position is needed. Utility Model Content

[0004] In view of this, this application provides a screen printing plate positioning mechanism and a screen printing apparatus.

[0005] Firstly, this application provides a web page positioning mechanism, including:

[0006] The screen assembly includes a support plate and a screen, which are detachably connected;

[0007] The drive assembly includes a movable plate, which is positioned on the side of the support plate opposite to the screen.

[0008] At least one connecting component, the connecting component includes a locking member, one end of the support plate is provided with threaded holes corresponding to the locking member, and the movable plate is provided with assembly holes that mate with the threaded holes, the diameter of the assembly holes being larger than the diameter of the threaded holes, the locking member passes through the corresponding assembly hole and is threadedly connected to the threaded hole to fix the support plate and the movable plate.

[0009] Beneficial effects: By connecting the corresponding mounting holes and threaded holes with locking parts, the support plate and the moving plate are fixed, thereby fixing the screen. When the screen position needs to be adjusted, first loosen all locking parts. Since the diameter of the mounting hole is larger than the diameter of the threaded hole, the locking parts can move radially in any direction within the mounting hole. After adjustment, tighten all locking parts to fix the support plate and the moving plate, so that the screen is in the desired adjustment position. The screen positioning mechanism provided in this application can flexibly and conveniently adjust the screen position and is easy to maintain.

[0010] In one optional embodiment, multiple mounting holes are spaced apart, and the connecting component also includes a waist hole pad, which is correspondingly disposed on the upper end of the mounting hole. The locking element is a screw, and the screw shank passes through the waist hole of the waist hole pad and the mounting hole in sequence and is locked in the threaded hole. The length of the waist hole of the waist hole pad is greater than or equal to the diameter of the mounting hole, and the width of the waist hole pad is adapted to the diameter of the screw shank.

[0011] Beneficial effects: Placing the waist hole pad on top of the mounting hole allows the locking component to contact the waist hole pad during tightening and loosening. The waist hole pad strengthens the connection between the locking component, support plate, and moving plate, distributing and optimizing contact stress, thereby enhancing positioning and fixing capabilities and improving the stability and durability of the structural connection. The waist hole pad's length is greater than or equal to the diameter of the mounting hole, and the width of the waist hole pad is matched to the diameter of the screw's shank. This allows the screw shank to move along the length of the waist hole pad within the mounting hole when the locking component is selected. After adjustment, the connection between the shank and the mounting hole / threaded hole is tightened. In practical operation, rotating the waist hole pad aligns its length with the desired movement direction of the locking component, allowing the locking component to move within the waist hole. The waist hole pad does not need to be translated; only rotation is required, avoiding interference between adjacent waist hole pads during locking component movement and ensuring convenient adjustment of the screen's position. This method allows for flexible adjustment of the positioning connection between the support plate and the moving plate, ensuring the screen's positioning.

[0012] In one alternative embodiment, the screen assembly further includes a mounting frame mounted on the underside of the support plate, the mounting frame having a slot for inserting the screen, and both the support plate and the mounting frame having a cutout area in the middle for exposing the screen from above.

[0013] Beneficial effects: The mounting frame provides a connection base and installation space for the screen, which is inserted through slots on the mounting frame. Both the support plate and the mounting frame have hollowed-out areas in the middle, through which printing adhesive can be placed onto the screen for printing. The mounting frame is located under the support plate, so that the screen is also located under the support plate, so that during the printing stage, the screen can transfer the adhesive on it to the battery cell to achieve the printing purpose. Its structure is simple and facilitates the rapid implementation of printing.

[0014] In one alternative embodiment, the screen positioning mechanism further includes leveling components, of which at least three are provided and distributed around the periphery of the cutout area, and all leveling components are used to adjust the assembly gap between the support plate and the mounting frame.

[0015] Beneficial effects: By assembling the mounting frame onto the underside of the support plate using three or more leveling components, the connection is ensured to be stable. During the assembly process, all leveling components are used in conjunction to adjust the assembly gap between the support plate and the mounting frame, so that the screen can be parallel to the plane where the battery cell to be printed is located, which helps to improve the accuracy and quality of the screen printing adhesive application in the subsequent printing stage.

[0016] In one optional embodiment, the leveling assembly includes a leveling member, an abutment sleeve, a first locking member, and a second locking member. The leveling member is threadedly connected to the support plate, and the abutment sleeve is fitted onto the mounting frame. The leveling member is adapted to push against the abutment sleeve to move the mounting frame away from the support plate. The first locking member is sleeved outside the leveling member and is used to lock the leveling member and the support plate in relative fixation. The second locking member extends through the leveling member to be inserted into the abutment sleeve and screwed onto it. The second locking member is used to lock the leveling member and the abutment sleeve in relative fixation.

[0017] Beneficial effects: For the exemplary adjustment structure of the leveling component, the user can screw the leveling component into the support plate, allowing the leveling component to push against the abutment sleeve. This causes the abutment sleeve to move away from the support plate, thereby widening the assembly gap between the support plate and the mounting frame at the location of the leveling component. When it is necessary to reset and reduce the assembly gap between the support plate and the mounting frame, the leveling component can be screwed out from the support plate in the opposite direction. After operating all the leveling components of the leveling component and leveling the screen, the user can fix the leveling component relative to the support plate using the first locking component and fix the leveling component relative to the abutment sleeve using the second locking component that passes through the leveling component, thereby placing the screen in the desired horizontal position.

[0018] In one optional embodiment, the screen positioning mechanism further includes a clamping assembly, of which at least two are provided and distributed around the periphery of the cutout area; the clamping assembly includes a clamping drive and a clamping shaft, the mounting end of the clamping drive is fixed to the support plate, and the clamping shaft is drivenly connected to the driving end of the clamping drive, and the clamping shaft passes through the support plate and the mounting frame to clamp the screen onto the mounting frame.

[0019] Beneficial effects: Two or more clamping components are provided, positioned around the periphery of the cutout area to avoid obstructing it; the clamping components tightly press the screen onto the mounting frame, ensuring the connection strength between the screen and the mounting frame, and guaranteeing the synchronicity of movement when the moving plate drives the support plate, mounting frame, and screen; in specific operation, the mounting end of the clamping drive is located on the support plate, and the clamping drive drives the clamping shaft to move and displace, allowing the clamping shaft to pass through the support plate and mounting frame and press against the screen, ensuring a tight connection between the screen and the mounting frame and improving assembly accuracy.

[0020] In one optional embodiment, the pressing shaft includes a first movable shaft and a second movable shaft. The first end of the first movable shaft is connected to the driving end of the pressing drive member, and the second end of the first movable shaft is movably connected to the first end of the second movable shaft. The second end of the second movable shaft is used to press against the screen.

[0021] The second end of the first moving shaft is provided with a first pressing surface, and the first end of the second moving shaft is provided with a third pressing surface. During the stroke of the pressing drive member driving the pressing shaft to approach the screen, the first pressing surface and the third pressing surface can move and abut against each other.

[0022] In the first and second moving shafts, one of them is provided with a connecting protrusion, and the other is provided with a connecting groove. The connecting protrusion and the connecting groove are engaged along the extension direction of the pressing shaft. There is a movable gap between the connecting protrusion and the connecting groove. A second pressing surface and a fourth pressing surface are provided at the engagement limit of the connecting protrusion and the connecting groove. During the stroke of the pressing drive member driving the pressing shaft away from the screen, the second pressing surface and the fourth pressing surface can move and abut against each other.

[0023] Beneficial effects: In the actual clamping and assembly stage, if the position of the support plate is not adjusted to a horizontal position, but the positions of the screen and the mounting frame are adjusted to a horizontal position, the shaft holes on the support plate and the screen mounting frame will not be concentric. Using the same shaft structure, the clamping operation will be jammed. The clamping shaft of this application adopts a split shaft design, which consists of a first moving shaft and a second moving shaft that are movably connected. It is configured with a gap and a movable connection, so that even if the first moving shaft and the second moving shaft are not on the same axis, the clamping purpose can still be achieved.

[0024] In one alternative embodiment, one of the first and third pressing surfaces is configured as a rotary conical surface, and the other is configured as a rotary toroidal surface; and / or,

[0025] In the second and fourth pressing surfaces, one of them is set as a rotary conical surface, and the other is set as a rotary annular surface.

[0026] Beneficial effects: When the clamping shaft is pressed down, the pressing of the first pressing surface and the third pressing surface, and the pressing of the second pressing surface and the fourth pressing surface, adopts a movable connection configuration of rotary conical surface and rotary annular surface, so as to reduce the contact area between the rotary conical surface and the rotary annular surface and avoid jamming when the first moving shaft and the second moving shaft are not on the same axis.

[0027] In one alternative embodiment, a clamping hole is formed on the end face of the screen facing the support plate, and the inner wall surface of the clamping hole is conformally configured with the clamping end face of the clamping shaft.

[0028] Beneficial effects: The inner wall surface of the clamping hole conforms to the clamping end face of the clamping shaft to increase the contact area, reduce stress concentration, and ensure a tight and reliable connection, thereby improving the stability of the screen during the printing stage; and it facilitates the axial movement of the clamping shaft to abut against the clamping hole, reducing assembly and adjustment time and simplifying the assembly process.

[0029] The clamping assembly also includes a guide sleeve, which is fixedly installed on the mounting frame, and the second moving shaft passes through the guide sleeve and slides in cooperation with the guide sleeve.

[0030] Beneficial effects: The guide sleeve is used to slide and guide the second moving shaft, enabling the second moving shaft to move axially and apply pressure to the screen to press and position the screen; this design helps to improve the assembly accuracy of the structure.

[0031] In one alternative embodiment, the screen assembly further includes a crossbeam disposed above the support plate and a connecting frame. Two connecting frames are disposed opposite each other on both sides of the crossbeam and the support plate, and the support plate and the crossbeam are fixedly connected by at least two connecting frames.

[0032] Beneficial effects: The crossbeam, support plate, and connecting frame are used together to form a connection area to establish a force transmission path for the moving plate to drive the mounting frame and screen; the connecting frame is symmetrically arranged on both sides of the support plate, which helps to improve the lateral bending stiffness of the overall structure, suppress the flutter phenomenon during screen operation, enhance the stability of screen operation, and improve printing quality.

[0033] In one alternative embodiment, the drive assembly further includes a lifting drive mechanism and a bracket, wherein the mounting end of the lifting drive mechanism is fixedly connected to the bracket, and the movable plate is connected to the drive end of the lifting drive mechanism.

[0034] Beneficial effects: The drive component integrates a bracket, a lifting drive mechanism, and a moving plate to construct a stable power transmission chain and support system, which helps to improve the accuracy and reliability of motion control; the lifting drive mechanism drives the moving plate to move up and down, thereby driving the support plate, mounting frame, and screen to move up and down synchronously, meeting the positioning and printing needs of the screen.

[0035] Secondly, this application also provides a screen printing apparatus, which includes the aforementioned screen positioning mechanism. Since the screen printing apparatus includes a screen positioning mechanism and has the same effects as the screen positioning mechanism, it will not be described in detail here. Attached Figure Description

[0036] To more clearly illustrate the technical solutions in the specific embodiments of this application or the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0037] Figure 1 This is a partial structural schematic diagram of the screen positioning mechanism provided in this embodiment;

[0038] Figure 2 This is a top view of the connection state between the moving plate and the support plate in the screen positioning mechanism provided in this embodiment;

[0039] Figure 3 for Figure 2 A schematic cross-sectional view of section AA in the middle;

[0040] Figure 4 This is a top view of the screen positioning mechanism provided in this embodiment;

[0041] Figure 5 for Figure 4 Schematic diagram of the cross-section of section BB;

[0042] Figure 6 for Figure 4 A schematic cross-sectional view of section CC;

[0043] Figure 7 This is a schematic diagram of the clamping shaft in the screen positioning mechanism provided in this embodiment;

[0044] Figure 8 This is a schematic diagram of the screen printing apparatus provided in this embodiment;

[0045] Explanation of reference numerals in the attached figures:

[0046] 101. Support plate; 1011. Threaded hole; 102. Screen; 1021. Pressing hole; 103. Mounting frame; 104. Crossbeam; 105. Connecting frame; 201. Moving plate; 2011. Assembly hole; 202. Lifting drive mechanism; 203. Bracket; 301. Waist hole pad; 4. Positioning pin; 501. Leveling component; 502. Abutment sleeve; 503. First locking component; 601. Pressing drive component; 602. First moving shaft; 6021. First pressing surface; 6022. Second pressing surface; 603. Second moving shaft; 6031. Third pressing surface; 6032. Fourth pressing surface; 604. Guide sleeve; 7. Horizontal movement drive mechanism; 8. Scraper mechanism. Detailed Implementation

[0047] The technical solutions of this application will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0048] In the description of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the meaning of "and / or" throughout the text includes three parallel solutions; for example, "A and / or B" includes solution A, or solution B, or a solution that simultaneously satisfies A and B. Furthermore, the technical solutions of the various embodiments can be combined with each other, but only if they are based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed in this application.

[0049] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0050] If the background section does not describe the shortcomings of the prior art, this section analyzes the shortcomings of the prior art in detail to introduce this solution.

[0051] The following is combined with Figures 1 to 8 This describes an embodiment of the present application.

[0052] According to embodiments of this application, in one aspect, a screen printing positioning mechanism is provided, including a screen printing component, a driving component, and a connecting component, such as... Figures 1 to 5As shown, the screen assembly includes a support plate 101 and a screen 102, which are detachably connected. The drive assembly includes a movable plate 201, which is disposed on the side of the support plate 101 away from the screen 102. The connection assembly includes a locking member (not shown in the figure). One end of the support plate 101 is provided with threaded holes 1011 corresponding to the locking members. The movable plate 201 is provided with assembly holes 2011 that mate with the threaded holes 1011. The diameter of the assembly holes 2011 is larger than the diameter of the threaded holes 1011. The locking members pass through the corresponding assembly holes 2011 and are threadedly connected to the threaded holes 1011 to fix the support plate 101 and the movable plate 201.

[0053] The screen positioning mechanism provided in this embodiment fixes the support plate 101 and the movable plate 201 by connecting the corresponding assembly hole 2011 and the threaded hole 1011 with locking parts, thereby fixing the screen 102. When it is necessary to adjust the position of the screen 102, first loosen all locking parts. Since the diameter of the assembly hole 2011 is larger than the diameter of the threaded hole 1011, the locking parts can move radially in any direction within the assembly hole 2011. After adjustment, tighten all locking parts to fix the support plate 101 and the movable plate 201, so that the screen 102 is in the desired adjustment position. The screen positioning mechanism provided in this application can flexibly and conveniently adjust the position of the screen 102 and is easy to maintain.

[0054] Optionally, one, two or more connecting components are provided, and all connecting components together fix the support plate 101 and the movable plate 201 to ensure connection strength and tightness.

[0055] In one alternative implementation, such as Figure 1 and Figure 3 As shown, multiple mounting holes 2011 are spaced apart. The connecting component also includes a waist hole pad 301, which is correspondingly configured on the upper end of the mounting hole 2011. The locking element is a screw. The screw shank passes through the waist hole of the waist hole pad 301 and the mounting hole 2011 in sequence and is locked in the threaded hole 1011. The length of the waist hole of the waist hole pad 301 is greater than or equal to the diameter of the mounting hole 2011, and the width of the waist hole pad 301 is adapted to the diameter of the screw shank.

[0056] In this scheme, the waist hole pad 301 is placed on the upper end of the assembly hole 2011, so that the locking component contacts the waist hole pad 301 during the tightening and loosening process. The waist hole pad 301 strengthens the connection between the locking component, the support plate 101 and the moving plate 201, disperses and optimizes the contact stress, thereby strengthening the positioning and fixing ability and improving the stability and durability of the structural connection.

[0057] The length of the waist hole of the waist hole pad 301 is greater than or equal to the diameter of the mounting hole 2011, and the width of the waist hole pad 301 is matched with the diameter of the screw rod segment. This allows the screw rod segment to move along the length direction of the waist hole pad 301 within the waist hole pad 301 and the mounting hole 2011 when the locking component is selected. After adjustment, the connection between the screw rod segment and the mounting hole 2011 and the threaded hole 1011 is tightened. In specific operation, by rotating the waist hole pad 301 so that the length direction of its waist hole is the same as the direction in which the locking component needs to move, the locking component can move within the waist hole. The waist hole pad 301 does not need to be translated, only rotated, which can avoid interference between adjacent waist hole pads 301 when the locking component moves, ensuring convenient adjustment of the screen position. This method can flexibly adjust the positioning connection position between the support plate 101 and the moving plate 201 to ensure the positioning position of the screen 102.

[0058] In one alternative implementation, such as Figure 5 As shown, the screen assembly also includes a mounting frame 103, which is mounted on the underside of the support plate 101. The mounting frame 103 has a slot for inserting the screen 102. Both the support plate 101 and the mounting frame 103 have a cutout area in the middle for exposing the screen 102 from above.

[0059] In this design, the mounting frame 103 provides the connection base and installation space for the screen printing plate 102. Specifically, the screen printing plate 102 is inserted into the slot on the mounting frame 103. Both the support plate 101 and the mounting frame 103 have a hollowed-out area in the middle. The printing adhesive can be placed on the screen printing plate 102 through the hollowed-out area for printing. The mounting frame 103 is located under the support plate 101, so that the screen printing plate 102 is also located under the support plate 101. This allows the screen printing plate 102 to transfer the printing adhesive onto the battery cell during the printing stage, achieving the printing purpose. Its structure is simple and facilitates quick printing.

[0060] In actual production, due to horizontal machining errors or assembly errors in the support plate 101 and mounting frame 103, the screen 102 located in the slot of the mounting frame 103 may not be level after the mounting frame 103 is fixed to the support plate 101, or the screen 102 may not be parallel to the plane where the battery cell to be printed is located. This will affect the printing quality of the battery cell. In order to level the screen 102, in an optional embodiment, the screen positioning mechanism further includes leveling components. At least three leveling components are provided and distributed around the periphery of the cutout area. All leveling components are used to adjust the assembly gap between the support plate 101 and the mounting frame 103.

[0061] In this scheme, the mounting frame 103 is assembled onto the underside of the support plate 101 using three or more leveling components to ensure a stable connection. During the assembly process, all leveling components are used to adjust the assembly gap between the support plate 101 and the mounting frame 103, so that the screen 102 can be parallel to the plane of the battery cell to be printed, which helps to improve the accuracy and quality of the printing of adhesive on the screen 102 in the subsequent printing stage.

[0062] In one alternative implementation, such as Figure 4 and Figure 5 As shown, the leveling assembly includes a leveling member 501, an abutment sleeve 502, a first locking member 503, and a second locking member (not shown in the figure). The leveling member 501 is threadedly connected to the support plate 101. The abutment sleeve 502 is assembled on the mounting frame 103. The leveling member 501 is adapted to push against the abutment sleeve 502 to move the mounting frame 103 away from the support plate 101. The first locking member 503 is sleeved on the outside of the leveling member 501 and is used to lock the leveling member 501 and the support plate 101 relatively fixed. The second locking member extends through the leveling member 501 to be inserted into the abutment sleeve 502 and screwed to the abutment sleeve 502. The second locking member is used to lock the leveling member 501 and the abutment sleeve 502 relatively fixed.

[0063] With this solution, for the exemplary adjustment structure of the leveling component, the user can screw the leveling component 501 into the support plate 101, so that the leveling component 501 can push the abutment sleeve 502, causing the abutment sleeve 502 to move and move the mounting frame 103 away from the support plate 101, thereby widening the assembly gap between the support plate 101 and the mounting frame 103 at the location of the leveling component. When it is necessary to reset and reduce the assembly gap between the support plate 101 and the mounting frame 103, the leveling component 501 can be screwed out from the support plate 101 in the opposite direction.

[0064] After leveling the screen 102 by operating the leveling component 501 of all leveling components, the user can fix the leveling component 501 relative to the support plate 101 by the first locking component 503, and fix the leveling component 501 relative to the abutment sleeve 502 by the second locking component passing through the leveling component 501, so that the screen is in the desired horizontal position.

[0065] Since the screen printing plate 102 is inserted into the slot of the mounting frame 103, in order to ensure the stability of the screen printing plate 102 after insertion, in an optional embodiment, such as Figure 4 and Figure 5As shown, the screen positioning mechanism also includes a clamping assembly. At least two clamping assemblies are provided and distributed around the periphery of the cutout area. The clamping assembly includes a clamping drive 601 and a clamping shaft. The mounting end of the clamping drive 601 is fixed to the support plate 101. The clamping shaft is drivenly connected to the driving end of the clamping drive 601. After passing through the support plate 101 and the mounting frame 103, the clamping shaft clamps the screen 102 onto the mounting frame 103.

[0066] In this scheme, two or more clamping components are provided, which are positioned around the periphery of the hollowed-out area to avoid overlap with it. The clamping components tightly press the screen 102 onto the mounting frame 103, ensuring the connection strength between the screen 102 and the mounting frame 103. This ensures the synchronization of movement when the moving plate 201 drives the support plate 101, the mounting frame 103, and the screen 102. In specific operation, the mounting end of the clamping drive 601 is located on the support plate 101. The clamping drive 601 drives the clamping shaft to move and displace, allowing the clamping shaft to pass through the support plate 101 and the mounting frame 103 and press against the screen 102, thus tightly connecting the screen 102 and the mounting frame 103 and improving assembly accuracy.

[0067] In one alternative implementation, such as Figure 6 As shown, the pressing shaft includes a first moving shaft 602 and a second moving shaft 603. The first end of the first moving shaft 602 is connected to the driving end of the pressing drive 601, and the second end of the first moving shaft 602 is movably connected to the first end of the second moving shaft 603. The second end of the second moving shaft 603 is used to press against the screen 102.

[0068] Optional, such as Figure 7 As shown, the second end of the first moving shaft 602 is provided with a first pressing surface 6021, and the first end of the second moving shaft 603 is provided with a third pressing surface 6031. During the stroke of the pressing drive member 601 driving the pressing shaft closer to the screen 102, the first pressing surface 6021 and the third pressing surface 6031 can move and abut against each other. In the first moving shaft 602 and the second moving shaft 603, one of them is provided with a connecting protrusion, and the other is provided with a connecting groove. The connecting protrusion and the connecting groove are engaged along the extension direction of the pressing shaft. There is a movable gap between the connecting protrusion and the connecting groove. The engagement limit of the connecting protrusion and the connecting groove is provided with a second pressing surface 6022 and a fourth pressing surface 6032. During the stroke of the pressing drive member 601 driving the pressing shaft away from the screen 102, the second pressing surface 6022 and the fourth pressing surface 6032 can move and abut against each other.

[0069] With this solution, during the actual pressing and assembly stage, if the position of the support plate 101 is not adjusted to a horizontal position, while the positions of the screen 102 and the mounting frame 103 are adjusted to a horizontal position, the shaft holes on the support plate 101, screen 102, and mounting frame 103 will not be concentric. Using the same shaft structure, the pressing operation may experience jamming. The pressing shaft of this application adopts a split shaft design, consisting of a first moving shaft 602 and a second moving shaft 603 that are movably connected. Through a gap and movable connection configuration, even if the first moving shaft 602 and the second moving shaft 603 are not on the same axis, the pressing purpose can still be achieved.

[0070] In one alternative embodiment, one of the first pressing surface 6021 and the third pressing surface 6031 is configured as a rotary conical surface, and the other is configured as a rotary annular surface.

[0071] In one alternative embodiment, one of the second pressing surface 6022 and the fourth pressing surface 6032 is configured as a rotary conical surface, and the other is configured as a rotary annular surface.

[0072] With this scheme, when the pressing shaft is pressed down, the pressing of the first pressing surface 6021 and the third pressing surface 6031, and the pressing of the second pressing surface 6022 and the fourth pressing surface 6032, adopts a movable connection configuration of a rotary conical surface and a rotary toroidal surface. This reduces the contact area between the rotary conical surface and the rotary toroidal surface, and avoids jamming when the first moving shaft 602 and the second moving shaft 603 are not on the same axis.

[0073] In one alternative implementation, such as Figure 6 As shown, a clamping hole 1021 is constructed on the end face of the screen 102 facing the support plate 101, and the inner wall surface of the clamping hole 1021 is conformally set with the clamping end face of the clamping shaft.

[0074] With this design, the inner wall surface of the clamping hole 1021 is conformally matched with the clamping end face of the clamping shaft to increase the contact area, reduce stress concentration, and ensure a tight and reliable connection, thereby improving the stability of the screen 102 during the printing stage; and it also facilitates the axial movement of the clamping shaft to abut against the clamping hole 1021, reducing assembly and adjustment time and simplifying the assembly process.

[0075] In one alternative implementation, such as Figure 6 As shown, the clamping assembly also includes a guide sleeve 604, which is fixedly mounted on the mounting frame 103. The second moving shaft 603 passes through the guide sleeve 604 and slides within it. The guide sleeve 604 is used to slide and guide the second moving shaft 603, allowing it to move axially towards the screen 102 to apply pressure and press against it. This design helps improve the assembly accuracy of the structure.

[0076] In one alternative implementation, such as Figure 8 As shown, the screen assembly also includes a crossbeam 104 disposed above the support plate 101 and a connecting frame 105. Two connecting frames 105 are provided and disposed opposite to each other on both sides of the crossbeam 104 and the support plate 101. The support plate 101 and the crossbeam 104 are fixedly connected by at least two connecting frames 105.

[0077] In this scheme, the crossbeam 104, support plate 101, and connecting frame 105 are used to form a connection area to establish a force transmission path for the moving plate 201 to drive the mounting frame 103 and screen 102. The connecting frame 105 is symmetrically arranged on both sides of the support plate 101, which helps to improve the lateral bending stiffness of the overall structure, suppress the flutter phenomenon when the screen 102 is working, enhance the working stability of the screen 102, and improve the printing quality.

[0078] In one alternative implementation, such as Figure 8 As shown, the support plate 101 and the crossbeam 104 can be connected by multiple positioning pins 4 to ensure the strength and stability of the connection between the support plate 101 and the crossbeam 104. The two connecting brackets 105 can be fixed to both sides of the support plate 101 by multiple fasteners.

[0079] In one alternative implementation, such as Figure 8 As shown, the drive assembly also includes a lifting drive mechanism 202 and a bracket 203. The mounting end of the lifting drive mechanism 202 is fixedly connected to the bracket 203, and the movable plate 201 is connected to the drive end of the lifting drive mechanism 202. With this design, the drive assembly integrates the bracket 203, the lifting drive mechanism 202, and the movable plate 201 to construct a stable power transmission chain and support system, which is beneficial for improving the accuracy and reliability of motion control. The lifting drive mechanism 202 drives the movable plate 201 to move up and down, thereby causing the support plate 101, the mounting frame 103, and the screen 102 to move up and down synchronously as a whole, meeting the positioning and printing operation requirements of the screen 102.

[0080] Secondly, this application also provides a screen printing apparatus, such as... Figure 8 As shown, the screen printing apparatus includes a screen positioning mechanism. The screen printing apparatus employing this screen positioning mechanism has the advantages of flexible and convenient adjustment of the screen 102 position and easy maintenance.

[0081] like Figure 8As shown, the screen printing apparatus also includes a transverse drive mechanism 7 and a squeegee mechanism 8. The mounting end of the transverse drive mechanism 7 is disposed on the crossbeam 104, and the squeegee mechanism 8 is disposed on the driving end of the transverse drive mechanism 7. The transverse drive mechanism 7 is adapted to drive the squeegee mechanism 8 to move within the hollowed-out area of ​​the support plate 101 and the mounting frame 103. The squeegee mechanism 8 includes two squeegees that can alternately rise and fall. After the squeegee descends and abuts against the screen, the transverse drive mechanism 7 drives the squeegee to move horizontally to scrape the adhesive on the screen 102 onto the battery cell below the screen 102.

[0082] During the operation of the screen printing device, the battery cell is first placed under the screen 102. Then, the lifting drive mechanism 202 drives the screen 102 to descend and approach the battery cell via the moving plate 201. Subsequently, the squeegee is controlled to descend and abut against the screen. Finally, the lateral drive mechanism 7 drives the squeegee mechanism 8 to move left and right to scrape the adhesive, so that the adhesive on the screen 102 can be scraped onto the battery cell.

[0083] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the scope of protection of this application.

Claims

1. A screen printing plate positioning mechanism, characterized in that, include: A screen assembly includes a support plate and a screen, wherein the support plate and the screen are detachably connected; A drive assembly includes a movable plate disposed on the side of the support plate opposite to the screen. At least one connecting component, the connecting component including a locking member, one end of the support plate is provided with threaded holes corresponding to the locking members, the movable plate is provided with assembly holes that mate with the threaded holes, the diameter of the assembly holes is larger than the diameter of the threaded holes, the locking member passes through the corresponding assembly hole and is threaded into the threaded hole to fix the support plate and the movable plate.

2. The screen printing positioning mechanism according to claim 1, characterized in that, The assembly holes are spaced in multiples, and the connecting assembly also includes a waist hole pad, which is correspondingly disposed on the upper end of the assembly hole. The locking element is a screw, and the shank of the screw passes through the waist hole of the waist hole pad and the assembly hole in sequence before being locked in the threaded hole. The length of the waist hole of the waist hole pad is greater than or equal to the diameter of the assembly hole, and the width of the waist hole pad is adapted to the diameter of the shank of the screw.

3. The screen printing positioning mechanism according to claim 1, characterized in that, The screen printing assembly also includes a mounting frame, which is installed on the underside of the support plate. The mounting frame has a slot for inserting the screen printing plate. Both the support plate and the mounting frame have a cutout area in the middle for exposing the screen printing plate from above.

4. The screen printing positioning mechanism according to claim 3, characterized in that, The screen positioning mechanism also includes leveling components. At least three leveling components are provided and distributed around the periphery of the hollow area. All leveling components are used to adjust the assembly gap between the support plate and the mounting frame.

5. The screen printing positioning mechanism according to claim 4, characterized in that, The leveling assembly includes a leveling component, an abutment sleeve, a first locking component, and a second locking component. The leveling component is threadedly connected to the support plate. The abutment sleeve is fitted onto the mounting frame. The leveling component is adapted to push against the abutment sleeve to move the mounting frame away from the support plate. The first locking component is sleeved on the leveling component and is used to lock the leveling component and the support plate in relative fixation. The second locking component extends through the leveling component to be inserted into the abutment sleeve and screwed onto it. The second locking component is used to lock the leveling component and the abutment sleeve in relative fixation.

6. The screen printing positioning mechanism according to claim 3 or 4, characterized in that, The screen positioning mechanism further includes a pressing component, of which at least two are provided and distributed around the periphery of the cutout area; the pressing component includes a pressing drive and a pressing shaft, the mounting end of the pressing drive is fixed to the support plate, and the pressing shaft is drivenly connected to the driving end of the pressing drive, and the pressing shaft passes through the support plate and the mounting frame to press the screen onto the mounting frame.

7. The screen printing positioning mechanism according to claim 6, characterized in that, The pressing shaft includes a first movable shaft and a second movable shaft. The first end of the first movable shaft is connected to the driving end of the pressing drive, and the second end of the first movable shaft is movably connected to the first end of the second movable shaft. The second end of the second movable shaft is used to press against the screen. The second end of the first moving shaft is provided with a first pressing surface, and the first end of the second moving shaft is provided with a third pressing surface. During the stroke of the pressing drive member driving the pressing shaft to approach the screen, the first pressing surface and the third pressing surface can move and abut against each other. In the first moving shaft and the second moving shaft, one of them is provided with a connecting protrusion, and the other is provided with a connecting groove. The connecting protrusion and the connecting groove are engaged along the extension direction of the pressing shaft. A movable gap is provided between the connecting protrusion and the connecting groove. A second pressing surface and a fourth pressing surface are provided at the engagement limit of the connecting protrusion and the connecting groove. During the stroke of the pressing drive member driving the pressing shaft away from the screen, the second pressing surface and the fourth pressing surface can move and abut against each other.

8. The screen printing positioning mechanism according to claim 7, characterized in that, In the first and third pressing surfaces, one is configured as a rotary conical surface, and the other is configured as a rotary toroidal surface; and / or, In the second pressing surface and the fourth pressing surface, one of them is set as a rotary conical surface, and the other is set as a rotary annular surface.

9. The screen printing positioning mechanism according to claim 7, characterized in that, The end face of the screen facing the support plate has a clamping hole, and the inner wall of the clamping hole is conformally configured to the clamping end face of the clamping shaft; and / or, The clamping assembly also includes a guide sleeve, which is fixedly installed on the mounting frame, and the second moving shaft passes through the guide sleeve and slides in cooperation with the guide sleeve.

10. The screen printing positioning mechanism according to claim 1, characterized in that, The screen assembly also includes a crossbeam disposed above the support plate and connecting frames. Two connecting frames are provided and positioned opposite each other on both sides of the crossbeam and the support plate. The support plate and the crossbeam are fixedly connected by at least two of the connecting frames; and / or, The drive assembly also includes a lifting drive mechanism and a bracket. The mounting end of the lifting drive mechanism is fixedly connected to the bracket, and the movable plate is connected to the drive end of the lifting drive mechanism.

11. A screen printing apparatus, characterized in that, The screen printing apparatus includes the screen positioning mechanism according to any one of claims 1-10.

Images