Coating printing device and equipment

Abstract

The utility model provides a coating printing device and equipment, and relates to the technical field of battery production. The coating printing device comprises a printing mechanism and a glue returning mechanism. Wherein the printing mechanism is used for printing photosensitive resist to the surface of the battery piece in the process of moving in the first direction. The glue return mechanism is connected with the printing mechanism and used for recovering redundant photosensitive glue in the process of moving in the reverse direction of the first direction. Namely, when the printing mechanism moves in the first direction, the photosensitive resist can be uniformly printed on the surface of the battery piece; and the glue return mechanism moves along the reverse direction of the first direction in the process of resetting the printing mechanism, so that redundant photosensitive glue can be recovered in time. Based on the design, the coating printing device provided by the utility model can effectively avoid hardening of the photo-sensitive adhesive due to long-time exposure in the air, so that the phenomenon of poor coating is obviously reduced.

Description

Technical Field

[0001] This utility model relates to the field of battery production technology, and more specifically, to a coating and printing apparatus and equipment. Background Technology

[0002] With the rapid development of the photovoltaic industry, the copper interconnect (THL) process, as one of the key processes in the manufacture of high-efficiency solar cells, directly affects the performance and cost of the cells due to its technological level and production efficiency. In the THL process, the coating step is the first critical step in the entire production line. It requires uniformly covering the surface of the cell with a layer of adhesive film, followed by drying. The quality of this step directly determines the stability of subsequent processes and the performance of the final product.

[0003] Currently, the coating process mainly uses blade coating, which involves using a blade to evenly apply photosensitive emulsion to the surface of the solar cell. However, in actual coating processes, some excess photosensitive emulsion is repeatedly scraped away by the blade and ink return knife. This excess emulsion, when exposed to air for extended periods, tends to harden, leading to poor coating results. Utility Model Content

[0004] The purpose of this invention is to provide a coating and printing apparatus and equipment that can promptly recover excess photosensitive emulsion, thereby effectively preventing the photosensitive emulsion from hardening due to prolonged exposure to air and preventing coating defects.

[0005] The embodiments of this utility model can be implemented as follows:

[0006] In a first aspect, this utility model provides a coating and printing apparatus, comprising:

[0007] A printing mechanism is used to print photosensitive emulsion onto the surface of a battery cell while moving along a first direction.

[0008] The photoresist recovery mechanism, connected to the printing mechanism, is used to recover excess photosensitive emulsion during reverse movement along the first direction.

[0009] In an optional embodiment, the printing mechanism includes a dispensing assembly, a coating blade, and a printing blade arranged sequentially in the opposite direction along a first direction; wherein the dispensing assembly is used to release photosensitive emulsion, the coating blade is used to coat the photosensitive emulsion onto the printing screen, and the printing blade is used to press the photosensitive emulsion on the printing screen onto the battery cell below.

[0010] In an optional embodiment, the dispensing assembly includes a glue storage box, a glue blocking plate, and a pressing pin; wherein, the glue storage box is used to store photosensitive glue and has a glue outlet on its bottom wall, the glue blocking plate is located in the inner cavity of the glue storage box and is used to block the glue outlet, and the pressing pin is located outside the glue storage box and is connected to the glue blocking plate.

[0011] In an optional embodiment, the dispensing assembly further includes a dispensing tube communicating with the inner cavity of the dispensing tank, the dispensing tube being used to communicate with a dispensing machine.

[0012] In an optional embodiment, the lower end of the printing squeegee is lower than the lower end of the coating squeegee.

[0013] In an optional embodiment, the adhesive return mechanism includes an adhesive return motor, an adhesive return scraper, and an adhesive return tube; wherein, the adhesive return scraper has a hollow structure and is used to recover excess photosensitive adhesive, the adhesive return tube connects the inner cavity of the adhesive return scraper and the adhesive dispensing assembly, and the adhesive return motor is mounted on the adhesive return tube.

[0014] In an optional embodiment, the return scraper is provided with a guide plate, which is inclined toward the side away from the glue dispensing component and has a return hole communicating with the inner cavity of the return scraper.

[0015] In an optional embodiment, the coating and printing apparatus further includes a guide rail mechanism connected to the adhesive return mechanism, which guides the adhesive return mechanism to reciprocate along a first direction or a second direction perpendicular to the first direction.

[0016] In an optional embodiment, the guide rail mechanism includes a first guide member and a second guide member; wherein, the first guide member is provided with a first guide rail extending along a first direction, the second guide member is slidably connected to the first guide rail and is provided with a second guide rail extending along a second direction, and the adhesive return mechanism is slidably connected to the second guide rail.

[0017] Secondly, this utility model provides a coating and printing device, including a worktable, a printing screen, and a coating and printing apparatus as described in any of the foregoing embodiments; wherein the worktable is used to support the battery cells, the printing screen is disposed above the worktable, and the coating and printing apparatus is disposed above the printing screen.

[0018] The beneficial effects of the coating and printing apparatus and equipment provided in this embodiment of the present invention include:

[0019] This invention provides a coating and printing apparatus and device. The coating and printing apparatus includes a printing mechanism and a photosensitive adhesive return mechanism. The printing mechanism prints photosensitive adhesive onto the surface of a solar cell while moving along a first direction. The photosensitive adhesive return mechanism is connected to the printing mechanism and is used to collect excess photosensitive adhesive while moving in the opposite direction. In other words, the printing mechanism can evenly print photosensitive adhesive onto the surface of the solar cell while moving along the first direction; and the photosensitive adhesive return mechanism moves in the opposite direction along the first direction during the resetting process of the printing mechanism to promptly collect excess photosensitive adhesive. Based on this design, the coating and printing apparatus provided by this invention can effectively prevent the photosensitive adhesive from hardening due to prolonged exposure to air, thereby significantly reducing the occurrence of coating defects. Attached Figure Description

[0020] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the coating and printing apparatus provided in this embodiment from a first-view perspective.

[0022] Figure 2 This is a schematic diagram of the coating and printing apparatus provided in this embodiment from a second perspective.

[0023] Figure 3 This is a structural schematic diagram of the coating and printing apparatus provided in this embodiment from a third-view perspective;

[0024] Figure 4 Provided for this embodiment Figure 2 Enlarged schematic diagram of the structure at point A;

[0025] Figure 5 Provided for this embodiment Figure 3 Enlarged schematic diagram of the structure at point B;

[0026] Figure 6 This is a schematic diagram of the coating and printing equipment provided in this embodiment from a first-view perspective;

[0027] Figure 7 This is a structural schematic diagram of the coating and printing equipment provided in this embodiment from a second perspective.

[0028] Icons: 1-Coating and printing equipment; 10-Coating and printing device; 30-Workbench; 50-Printing screen; 100-Printing mechanism; 110-Glue dispensing assembly; 111-Glue storage box; 113-Glue blocking plate; 135-Pressing ejector pin; 130-Coating doctor blade; 150-Printing doctor blade; 170-Glue injection tube; 300-Glue return mechanism; 310-Glue return motor; 330-Glue return doctor blade; 331-Guide plate; 333-Glue return hole; 350-Glue return tube; 500-Guide rail mechanism; 510-First guide component; 511-First guide rail; 530-Second guide component; 531-Second guide rail; 710-First direction; 730-Second direction. Detailed Implementation

[0029] In the related coating process, some excess photosensitive emulsion is repeatedly scraped away by the doctor blade and ink return blade, and hardens due to prolonged exposure to air, resulting in poor coating.

[0030] To address the aforementioned problems, this utility model provides a coating and printing apparatus and equipment. Through the coordinated action of the printing mechanism and the adhesive return mechanism, excess photosensitive adhesive can be recovered in a timely manner, thereby effectively preventing the photosensitive adhesive from hardening due to prolonged exposure to air and preventing coating defects.

[0031] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0032] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0033] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0034] In the description of this utility model, it should be noted that if terms such as "upper," "lower," "inner," or "outer" are used to indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the utility model product is usually placed during use, they are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0035] Furthermore, the terms "first" and "second" are used only to distinguish descriptions and should not be interpreted as indicating or implying relative importance.

[0036] It should be noted that, where there is no conflict, the features in the embodiments of this utility model can be combined with each other.

[0037] The following describes in detail the overall structure, working principle, and technical effects of the coating and printing apparatus and equipment provided by this utility model through embodiments and in conjunction with the accompanying drawings.

[0038] Please see Figures 1 to 3This utility model provides a coating and printing device 10, which is applied in the field of battery production. It can effectively prevent the photosensitive adhesive from hardening due to prolonged exposure to air and prevent coating defects.

[0039] The coating and printing apparatus 10 includes a printing mechanism 100 and a photoresist retraction mechanism 300. The printing mechanism 100 prints photosensitive adhesive onto the surface of the battery cell during movement along a first direction 710. The photoresist retraction mechanism 300 is connected to the printing mechanism 100 and recovers excess photosensitive adhesive during movement in the opposite direction along the first direction 710.

[0040] In other words, when the printing mechanism 100 moves along the first direction 710, it can evenly print the photosensitive emulsion onto the surface of the battery cell; while the emulsion return mechanism 300 moves in the opposite direction along the first direction 710 during the resetting process of the printing mechanism 100, it promptly recovers excess photosensitive emulsion. Based on this design, the coating and printing apparatus 10 provided by this utility model can effectively prevent the photosensitive emulsion from hardening due to prolonged exposure to air, thereby significantly reducing the occurrence of coating defects.

[0041] like Figure 1 and Figure 2 As shown, the printing mechanism 100 includes sequential reverse directions along the first direction 710 (i.e., ... Figure 1 The image shows, from left to right, a dispensing assembly 110, a coating blade 130, and a printing blade 150. The dispensing assembly 110 releases the photosensitive emulsion, the coating blade 130 applies the photosensitive emulsion onto the printing screen 50, and the printing blade 150 presses the photosensitive emulsion from the printing screen 50 onto the underlying battery cell. It should be noted that the coating blade 130 and the printing blade 150 can be connected to the dispensing assembly 110 via the same connector, or they can be connected to the dispensing assembly 110 via separate connectors; the specific design can be flexibly adjusted according to actual needs.

[0042] Based on the aforementioned positioning, during the movement along the first direction 710, the dispensing assembly 110, the coating squeegee 130, and the printing squeegee 150 sequentially function, enabling the printing mechanism 100 to achieve precise control, uniform coating, and accurate printing of the photosensitive emulsion. Specifically, firstly, the dispensing assembly 110 releases an appropriate amount of photosensitive emulsion onto the printing screen 50; then, the coating squeegee 130 evenly coats the photosensitive emulsion onto the surface of the printing screen 50; finally, the printing squeegee 150 precisely presses the photosensitive emulsion on the printing screen 50 onto the surface of the underlying battery cell, thereby completing the entire coating and printing process.

[0043] To ensure that the emulsion assembly 110 can release an appropriate amount of photosensitive emulsion onto the printing screen 50 during the printing process, such as... Figure 2 and Figure 4As shown, the adhesive dispensing assembly 110 includes an adhesive storage box 111, an adhesive blocking plate 113, and a pressing pin 135. The adhesive storage box 111 stores photosensitive adhesive and has an adhesive dispensing port on its bottom wall. The adhesive blocking plate 113 is located inside the adhesive storage box 111 and serves to block the photosensitive adhesive from leaking out of the dispensing port when not in use, ensuring that the adhesive is released only when needed. The pressing pin 135 is located outside the adhesive storage box 111 and is connected to the adhesive blocking plate 113.

[0044] In practical applications, when the printing mechanism 100 is pressed down, the pressing pin 135 is triggered and pushes the adhesive blocking plate 113 upward, thereby opening the adhesive outlet and allowing the photosensitive adhesive to flow from the adhesive storage box 111 to the printing screen 50; while in the non-working state or when reset, the pressing pin 135 no longer applies pressure, and the adhesive blocking plate 113 automatically closes the adhesive outlet, stopping the release of photosensitive adhesive.

[0045] With the above settings, the adhesive dispensing component 110 can precisely control the amount of photosensitive adhesive released during the printing process according to actual needs, ensuring that an appropriate amount of photosensitive adhesive is obtained for each print. This avoids adhesive waste and effectively prevents coating defects caused by excessive or insufficient adhesive dispensing. At the same time, the above settings also significantly improve work efficiency and stability, providing a reliable guarantee for high-quality coating processes.

[0046] Furthermore, the glue dispensing assembly 110 also includes a glue injection tube 170 communicating with the inner cavity of the glue storage box 111. The glue injection tube 170 is used to communicate with the glue injection machine. It is easy to understand that the design of communicating the glue injection tube 170 with the glue injection machine ensures that the photosensitive adhesive in the glue storage box 111 can be replenished in real time, avoiding production interruptions due to insufficient glue quantity and ensuring the continuous and efficient operation of the coating and printing device 10.

[0047] Please refer to it again. Figure 1 To ensure smooth printing, the lower end of the printing squeegee 150 is lower than the lower end of the coating squeegee 130. Understandably, this lower-positioned squeegee 150 can apply further pressure to the printing screen 50 during movement, thereby precisely transferring the photosensitive emulsion from the screen to the surface of the underlying battery cell, ensuring printing quality and effect.

[0048] Additionally, it should be noted that since the height of the printing squeegee 150 is slightly lower than that of the adhesive squeegee, its downward pressure parameter is determined by the set height of the printing squeegee 150 when the printing mechanism 100 moves downward.

[0049] Please see Figure 1 and Figure 3To achieve the recycling of photosensitive emulsion and reduce resource waste, the emulsion return mechanism 300 includes an emulsion return motor 310, an emulsion return blade 330, and an emulsion return tube 350. The emulsion return blade 330 is hollow and used to collect excess photosensitive emulsion. The emulsion return tube 350 connects the inner cavity of the emulsion return blade 330 to the emulsion dispensing assembly 110 (such as the emulsion storage box 111), thereby guiding the collected photosensitive emulsion back to the emulsion dispensing assembly 110 for storage or reuse. Furthermore, the emulsion return motor 310 is mounted on the emulsion return tube 350, providing power to drive the photosensitive emulsion from the emulsion return blade 330 through the emulsion return tube 350 back to the emulsion dispensing assembly 110.

[0050] Furthermore, such as Figure 3 and Figure 5 As shown, the squeegee 330 is equipped with a guide plate 331, which is inclined towards the side away from the glue dispensing assembly 110. Based on this design, during the reverse movement along the first direction 710, the inclined guide plate 331 can effectively guide excess photosensitive emulsion to separate from the surface of the printing screen 50 and concentrate it on the guide plate 331. In addition, since the guide plate 331 also has a return hole 333 communicating with the inner cavity of the squeegee 330, the photosensitive emulsion can quickly flow into the inner cavity of the squeegee 330 and be further recycled through the guide of the return hole 333.

[0051] Understandably, the above-mentioned re-resin process not only avoids the photosensitive adhesive from remaining on the guide plate 331 for a long time, but also significantly reduces the risk of hardening and material waste caused by air contact, thereby improving resource utilization and the stability of the overall process.

[0052] In some alternative embodiments, to ensure the accurate and stable movement paths of the re-adhesion mechanism 300 and the printing mechanism 100 during operation, the coating and printing apparatus 10 further includes a guide rail mechanism 500. The guide rail mechanism 500 is connected to the re-adhesion mechanism 300 and is used to guide the re-adhesion mechanism 300 and the printing mechanism 100 to reciprocate along a first direction 710 (e.g., a horizontal direction) or a second direction 730 (e.g., a vertical direction) perpendicular to the first direction 710.

[0053] For example, when moving along the second direction 730, the pressing pin 135 in the aforementioned embodiment is pressed and pushes the resist plate 113 upward, thereby opening the adhesive outlet and allowing an appropriate amount of photosensitive adhesive to flow from the adhesive storage box 111 to the printing screen 50. Similarly, when moving along the first direction 710, the adhesive dispensing component 110, the coating blade 130, and the printing blade 150 in the aforementioned embodiment function sequentially to ensure that the photosensitive adhesive is evenly coated and accurately printed onto the surface of the battery cell. Furthermore, when moving in the opposite direction along the first direction 710, the guide plate 331 in the aforementioned embodiment can effectively guide excess photosensitive adhesive to separate from the surface of the printing screen 50 and achieve rapid recycling through the adhesive return hole 333.

[0054] Specifically, such as Figures 1 to 3 As shown, the guide rail mechanism 500 includes a first guide member 510 and a second guide member 530. The first guide member 510 has a first guide rail 511 extending along a first direction 710, and the second guide member 530 is slidably connected to the first guide rail 511. Furthermore, the second guide member 530 has a second guide rail 531 extending along a second direction 730, and the adhesive return mechanism 300 is slidably connected to the second guide rail 531. It is easy to understand that the first guide rail 511 provides precise guidance for the second guide member 530 along the first direction 710, while the second guide member 530 further guides the movement of the adhesive return mechanism 300 and the printing mechanism 100 in the second direction 730. Based on the above-described hierarchical design, flexible switching in multiple directions is achieved, meeting the needs of different stages in the coating and printing process.

[0055] Taking the embodiment provided by this utility model as an example, the working principle and workflow of the coating and printing device 10 are as follows:

[0056] When the printing mechanism 100 moves downward along the second direction 730, the pressing pin 135 is pressed and pushes the adhesive resist plate 113 upward, thereby opening the adhesive outlet of the adhesive storage box 111, allowing an appropriate amount of photosensitive adhesive to flow from the adhesive storage box 111 onto the surface of the printing screen 50. Subsequently, as the printing mechanism 100 moves along the first direction 710, the coating blade 130 evenly coats the photosensitive adhesive onto the surface of the printing screen 50, while the printing blade 150 precisely presses the photosensitive adhesive on the printing screen 50 onto the surface of the battery cell below during its movement, completing the coating and printing action.

[0057] After printing is completed, the photoresist return mechanism 300 begins to move in the opposite direction of the first direction 710. During this process, the guide plate 331 on the photoresist return squeegee 330 guides excess photoresist to separate from the surface of the printing screen 50, and allows the excess photoresist to quickly flow into the inner cavity of the photoresist return squeegee 330 through the photoresist return holes 333 opened on the guide plate 331. Afterwards, the photoresist return motor 310 transports the recovered photoresist back to the photoresist storage box 111 for storage or reuse through the photoresist return pipe 350, effectively avoiding material waste.

[0058] In summary, this utility model provides a coating and printing apparatus 10. The coating and printing apparatus 10 includes a printing mechanism 100 and a photosensitive adhesive return mechanism 300. The printing mechanism 100 prints photosensitive adhesive onto the surface of the battery cell while moving along a first direction 710. The photosensitive adhesive return mechanism 300 is connected to the printing mechanism 100 and recovers excess photosensitive adhesive while moving in the opposite direction of the first direction 710. That is, when the printing mechanism 100 moves along the first direction 710, it can evenly print photosensitive adhesive onto the surface of the battery cell; while the photosensitive adhesive return mechanism 300 moves in the opposite direction of the first direction 710 during the resetting process of the printing mechanism 100, promptly recovering excess photosensitive adhesive. Based on this design, the coating and printing apparatus 10 provided by this utility model can effectively prevent the photosensitive adhesive from hardening due to prolonged exposure to air, thereby significantly reducing the occurrence of coating defects.

[0059] Additionally, please see Figure 6 and Figure 7 This utility model also provides a coating and printing apparatus 1, including a worktable 30, a printing screen 50, and the coating and printing device 10 described in the foregoing embodiments. The worktable 30 supports the battery cells and provides stable foundation support for the entire coating and printing process. The printing screen 50 is positioned above the worktable 30, and the coating and printing device 10 is positioned above the printing screen 50. It is readily understood that because the coating and printing apparatus 1 includes the coating and printing device 10 described in the foregoing embodiments, it effectively prevents the photosensitive emulsion from hardening due to prolonged exposure to air, thus preventing coating defects. Further details are omitted here.

[0060] The above are merely specific embodiments of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model.

Claims

1. A coating and printing apparatus, characterized in that, include: A printing mechanism (100) is used to print photosensitive adhesive onto the surface of a battery cell while moving along a first direction (710). A photoresist recovery mechanism (300), connected to the printing mechanism (100), is used to recover excess photoresist during movement in the opposite direction of the first direction (710).

2. The coating and printing apparatus according to claim 1, characterized in that, The printing mechanism (100) includes a dispensing assembly (110), a coating blade (130), and a printing blade (150) arranged sequentially in the opposite direction of a first direction (710); wherein the dispensing assembly (110) is used to release the photosensitive emulsion, the coating blade (130) is used to coat the photosensitive emulsion onto a printing screen (50), and the printing blade (150) is used to press the photosensitive emulsion on the printing screen (50) onto the battery cell below.

3. The coating and printing apparatus according to claim 2, characterized in that, The dispensing assembly (110) includes a glue storage box (111), a glue blocking plate (113), and a pressing pin (135); wherein, the glue storage box (111) is used to store photosensitive glue and has a glue outlet on its bottom wall, the glue blocking plate (113) is located in the inner cavity of the glue storage box (111) and is used to block the glue outlet, and the pressing pin (135) is located outside the glue storage box (111) and is connected to the glue blocking plate (113).

4. The coating and printing apparatus according to claim 3, characterized in that, The dispensing assembly (110) also includes a dispensing tube (170) communicating with the inner cavity of the glue storage box (111), and the dispensing tube (170) is used to communicate with the dispensing machine.

5. The coating and printing apparatus according to claim 2, characterized in that, The lower end of the printing blade (150) is lower than the lower end of the coating blade (130).

6. The coating and printing apparatus according to claim 2, characterized in that, The adhesive return mechanism (300) includes an adhesive return motor (310), an adhesive return scraper (330), and an adhesive return tube (350); wherein, the adhesive return scraper (330) has a hollow structure and is used to recover excess photosensitive adhesive, the adhesive return tube (350) connects the inner cavity of the adhesive return scraper (330) and the adhesive dispensing assembly (110), and the adhesive return motor (310) is mounted on the adhesive return tube (350).

7. The coating and printing apparatus according to claim 6, characterized in that, The return glue scraper (330) is provided with a guide plate (331), which is inclined toward the side away from the glue dispensing component (110) and has a return glue hole (333) communicating with the inner cavity of the return glue scraper (330).

8. The coating and printing apparatus according to any one of claims 1 to 7, characterized in that, The coating and printing apparatus (10) further includes a guide rail mechanism (500), which is connected to the glue return mechanism (300) and is used to guide the glue return mechanism (300) to reciprocate along the first direction (710) or a second direction (730) perpendicular to the first direction (710).

9. The coating and printing apparatus according to claim 8, characterized in that, The guide rail mechanism (500) includes a first guide member (510) and a second guide member (530); wherein, the first guide member (510) is provided with a first guide rail (511) extending along the first direction (710), the second guide member (530) is slidably connected to the first guide rail (511) and is provided with a second guide rail (531) extending along the second direction (730), and the adhesive return mechanism (300) is slidably connected to the second guide rail (531).

10. A coating and printing apparatus, characterized in that, The device includes a worktable (30), a printing screen (50), and a coating and printing apparatus as described in any one of claims 1 to 9; wherein the worktable (30) is used to support the battery cells, the printing screen (50) is disposed above the worktable (30), and the coating and printing apparatus (10) is disposed above the printing screen (50).

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