A kind of first membrane piece lossless maintenance and cleaning tool and process of all series of Yiguang spray head

Abstract

The application discloses a kind of first membrane pieces of light full series spray head nondestructive maintenance tool and process, belong to industrial ink-jet nozzle maintenance technical field.The scheme only replaces the first earless maintenance membrane piece of most critical spray head, without additional production custom membrane piece, can be completed by old membrane piece cooperation transfer tape transfer and adhere;Maintenance whole does not disassemble original positioning block of spray head, by special glue scraping tool, the thickness of glue layer is accurately controlled at 0.01~0.10mm, and the precise alignment of earless membrane piece is realized by matching positioning tool, can adopt two kinds of ways, such as rolling glue coating or transfer and adhere, greatly reduce maintenance cost, adapt to light full series spray head single membrane piece replacement maintenance.

Description

Technical Field

[0001] This invention relates to the field of industrial inkjet printer printhead repair technology, and in particular to a tooling and process for non-destructive repair and cleaning of the first diaphragm of all Ricoh printhead series. Background Technology

[0002] Ricoh industrial inkjet printheads are widely used in digital printing, advertising inkjet printing, and industrial inkjet printing equipment, with a large market presence and complex usage scenarios. During long-term printing, the first nozzle diaphragm, as the core component that directly contacts the ink, is highly susceptible to nozzle clogging due to ink sedimentation, impurity accumulation, and ink stain adhesion. It is also prone to damage and ink leakage due to ink corrosion and mechanical wear. Meanwhile, the subsequent multiple layers of diaphragms inside the printhead are usually in good condition. Failure of just the first diaphragm can render the entire printhead unusable, resulting in serious resource waste and cost losses.

[0003] Currently, the industry's repair methods for Ricoh printheads have many drawbacks:

[0004] Firstly, traditional repair methods cannot target the first diaphragm individually; the entire set of diaphragms must be replaced, which is costly and cannot solve the problem of diaphragm blockage, requiring direct replacement.

[0005] Secondly, although some repair solutions can replace the first diaphragm, there is no special positioning tool. When manually attaching the first diaphragm without ear structure, it is very easy for the diaphragm to shift, warp, or misalign, resulting in problems such as inaccurate nozzle alignment, ink leakage, and broken printing lines, resulting in a very low repair yield.

[0006] Third, in order to achieve alignment during the maintenance process, the original positioning block of the nozzle must be removed. The disassembly operation is very likely to damage the nozzle body, cause deformation of the positioning hole, or even cause the nozzle to be permanently scrapped.

[0007] Fourth, there is no dedicated adhesive control tooling, and the thickness of the adhesive coating depends entirely on manual experience. If the adhesive layer is too thick, it will easily overflow and clog the nozzles; if it is too thin, the adhesion will be weak and the diaphragm will easily fall off, which will seriously affect the service life of the nozzle.

[0008] Fifth, the inability to disassemble, wash, and reuse the first-stage diaphragm means that clogged diaphragms must be discarded, further increasing maintenance costs and failing to address the root cause of nozzle clogging.

[0009] To address the aforementioned industry pain points, this invention has developed a low-cost, non-destructive repair and cleaning solution specifically for the first diaphragm of Ricoh printheads. The first diaphragm can be disassembled separately for cleaning and unclogging or for direct replacement, eliminating the need for custom-made ear-type diaphragms. Precise transfer and bonding of the earless diaphragm can be achieved using transfer tape, without disassembling the printhead positioning block throughout the process. The adhesive layer thickness is controlled by a dedicated adhesive scraper, which not only solves the nozzle clogging problem but also significantly reduces repair costs and improves repair efficiency and yield. Summary of the Invention

[0010] The purpose of this invention is to overcome the shortcomings of existing technologies and provide a low-cost, non-destructive repair and cleaning tooling and process for the first-stage diaphragm of Ricoh's entire series of printheads. It only replaces or disassembles and reuses the key first-stage diaphragm without ear, without the need for additional custom diaphragms. It uses transfer tape to achieve precise transfer, without disassembling the printhead positioning block throughout the process, and precisely controls the thickness of the adhesive layer, achieving low-cost, high-precision non-destructive repair and cleaning, and completely solving the industry problem of nozzle clogging in Ricoh printheads.

[0011] To achieve the above objectives, the present invention adopts the following technical solution:

[0012] A low-cost, non-destructive repair and cleaning fixture for the first diaphragm of all Ricoh printheads includes the Ricoh printhead body, a diaphragm without ear flaps, a glue coating roller, a glue scraping and thickness control fixture, a transfer tape, a set-type positioning fixture, and a pressing fixture.

[0013] In some preferred embodiments, the earless repair diaphragm is the first earless structure diaphragm of the nozzle and is the only object of this repair and cleaning. Depending on the actual situation, a new earless repair diaphragm can be directly replaced, or the old diaphragm can be disassembled, cleaned and unblocked and reused. The subsequent multiple layers of diaphragms inside the nozzle remain intact and do not need to be replaced.

[0014] In some preferred embodiments, the transfer tape is a special double-sided tape with die-cutting process, used for pre-fixing and transfer alignment of the earless repair diaphragm (new diaphragm or old diaphragm after cleaning), without the need for additional customization of special diaphragms with positioning ears, and directly adapts to the first diaphragm of the earless structure.

[0015] In some preferred embodiments, the kit-type positioning fixture can be directly fitted onto the outside of the original positioning block of the nozzle, without disassembly or modification of any original structure of the nozzle, thus avoiding damage to the nozzle substrate and deformation of the positioning hole during disassembly and assembly, while providing a precise alignment reference for the earless repair diaphragm.

[0016] In some preferred embodiments, the glue-applying roller is used to uniformly apply a special adhesive to the bonding surface of the nozzle to achieve a preliminary uniform distribution of the adhesive layer; the glue-scraping and thickness-controlling tool is used to scrape the adhesive layer after application to precisely control the thickness of the adhesive layer within the range of 0.01~0.10mm, which not only ensures the strong adhesion between the diaphragm and the nozzle base surface, but also avoids the problem of excessive glue overflow clogging the nozzle.

[0017] In some preferred embodiments, the pressing fixture is used to apply pressure and maintain pressure after the diaphragm is bonded, ensuring that the diaphragm is tightly bonded to the nozzle base surface without voids or displacement, thereby further improving the bonding stability.

[0018] This invention also provides a non-destructive repair and cleaning process for the first diaphragm of all Ricoh printhead series. It allows for two methods to be selected based on actual needs: direct adhesive bonding or transfer tape bonding. It also supports the replacement or disassembly and reuse of the first diaphragm. The specific steps are as follows:

[0019] 1. First-stage diaphragm removal and substrate / diaphragm pretreatment: The first-stage diaphragm without earpieces of the Ricoh printhead is removed. On the one hand, the substrate of the printhead is thoroughly cleaned to remove old adhesive, ink stains, and impurities, ensuring that the substrate is flat and clean. On the other hand, the removed first-stage diaphragm can be cleaned by ultrasonic cleaning, solvent soaking, etc., to remove ink deposits and impurities in the nozzles of the diaphragm, solve the nozzle clogging problem, and realize the cleaning and reuse of the diaphragm.

[0020] 2. Roller coating: A special adhesive is evenly applied to the bonding surface of the nozzle using a coating roller to achieve a preliminary uniform distribution of the adhesive layer;

[0021] 3. Glue control: Use a glue control tool to smooth and trim the glued area, strictly control the glue layer thickness within the range of 0.01~0.10mm, remove excess glue, and avoid glue overflow clogging the spray nozzle or the glue layer being too thin and not bonding firmly.

[0022] 4. Diaphragm pre-fixation: Fix the new earless repair diaphragm or the old diaphragm after cleaning and declogging onto the transfer tape to complete the pre-fabrication of the transfer carrier and achieve the initial fixation and positioning of the diaphragm.

[0023] 5. Non-destructive positioning of the kit: The kit positioning fixture is directly fitted onto the original positioning block of the Ricoh printhead without disassembling or altering the original structure of the printhead. The fixture provides a precise alignment reference for the transfer carrier, achieving precise centering and alignment between the earless repair diaphragm and the printhead nozzle.

[0024] 6. Transfer bonding and pressure curing: The earless repair film on the transfer carrier is precisely bonded to the adhesive surface of the nozzle. After peeling off the transfer tape, the film is pressed and cured using a pressing fixture. Once the adhesive has bonded stably, the fixture is removed, thus completing the first step of film replacement or cleaning and reinstallation, while also solving the nozzle clogging problem.

[0025] Compared with the prior art, this application has at least the following beneficial technical effects:

[0026] 1. The solution of this invention only operates on the first key earless diaphragm, without the need to replace the entire diaphragm, supports diaphragm cleaning and reuse, and greatly reduces maintenance costs;

[0027] 2. Depending on the actual situation, you can choose between two methods: direct gluing or transfer tape bonding, which is flexible and convenient to operate.

[0028] 3. The nozzle positioning block is not disassembled throughout the process, thus avoiding damage to the nozzle base;

[0029] 4. The adhesive layer thickness is precisely controlled by a special adhesive scraping tool, and the precise alignment of the earless diaphragm is achieved with the kit positioning tool, eliminating problems such as diaphragm displacement, warping, ink leakage, and nozzle clogging. It is compatible with all Ricoh printheads and is suitable for batch standardized maintenance operations, effectively solving the common industry problem of nozzle clogging in Ricoh printheads. Attached Figure Description

[0030] Figure 1 This is an exploded view of the Ricoh printhead and the first earless maintenance diaphragm.

[0031] Figure 2 Schematic diagram of the adhesive scraping and thickness control tooling operation;

[0032] Figure 3 This is a schematic diagram of the glue application roller operation.

[0033] Figure 4 This is a schematic diagram showing the pre-fixation of the transfer tape and the earless repair diaphragm;

[0034] Figure 5 An assembly diagram showing the fitting of the kit positioning fixture onto the original positioning block of the nozzle;

[0035] Figure 6 A schematic diagram of the transfer and bonding of a repair diaphragm without earpieces; Detailed Implementation

[0036] To enable those skilled in the art to better understand the technical solutions in this application, the technical solutions in the embodiments of this application will be clearly and completely described below. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0037] The present invention will be further described in detail below with reference to the accompanying drawings. The structures and processes not described in detail in this embodiment are all conventional technologies in the art.

[0038] This invention discloses a non-destructive repair and cleaning fixture for the first diaphragm of all Ricoh printhead series, comprising a Ricoh printhead body, a tabless repair diaphragm, a glue applicator roller, a glue scraper and thickness control fixture, a transfer tape, a set-type positioning fixture, and a pressing fixture. The tabless repair diaphragm is the first tabless structural diaphragm of the printhead and is the sole object of this repair and cleaning operation; subsequent diaphragms reuse the original intact structure of the printhead and do not require replacement. The transfer tape is a special double-sided tape with die-cutting, used for pre-fixing and transfer alignment of the tabless repair diaphragm, eliminating the need for custom-made tabless diaphragms.

[0039] During actual maintenance and cleaning operations, two modes can be selected: diaphragm replacement or cleaning and reuse, depending on the actual condition of the nozzle. The operation procedure is as follows:

[0040] 1. First, remove the first diaphragm of the Ricoh printhead. On the one hand, clean and remove dust, old adhesive and ink stains from the base surface of the printhead to keep the base surface flat and clean. On the other hand, the removed diaphragm can be cleaned and unblocked to solve the problem of nozzle blockage and realize the reuse of the diaphragm.

[0041] 2. Reuse Figure 3 The adhesive roller evenly applies special adhesive to the bonding surface of the nozzle, completing the initial adhesive application process.

[0042] 3. Subsequently adopted Figure 2 The adhesive thickness control tool is used to smooth the adhesive layer, precisely controlling the thickness of the adhesive layer within the range of 0.01~0.10mm to avoid adhesive overflow clogging the nozzle;

[0043] 4. Next, fix the new, earless repair diaphragm or the cleaned and unblocked old diaphragm to... Figure 4 On the transfer tape, the transfer carrier is pre-made;

[0044] 5. Then adopt Figure 5 The kit-type positioning fixture is directly fitted onto the original positioning block of the printhead without disassembling the positioning block, providing a precise alignment reference for the transfer carrier and achieving precise centering and alignment of the earless repair diaphragm with the printhead nozzle.

[0045] 6. After alignment, pass Figure 6 The method involves transferring and bonding the earless repair diaphragm to the nozzle bonding surface, and then peeling off the transfer tape.

[0046] 7. Finally, use a pressing fixture to apply pressure and maintain curing. Once the adhesive has bonded stably, remove the fixture. This completes the replacement or cleaning and reinstallation of the first diaphragm, thoroughly resolving the nozzle clogging problem.

[0047] This invention offers a low-cost and easy-to-operate solution that operates only on the first critical, earless diaphragm. It supports diaphragm cleaning and reuse, is non-destructive to the printhead throughout the process, has controllable adhesive layer thickness, precise diaphragm positioning, and strong versatility. It is suitable for large-scale maintenance and cleaning of all Ricoh printheads, effectively solving the industry problem of nozzle clogging in Ricoh printheads.

[0048] The above description of the embodiments is provided to enable those skilled in the art to understand and use this application. It will be apparent to those skilled in the art that various modifications can be made to these embodiments, and the general principles described herein can be applied to other embodiments without inventive effort. Therefore, this application is not limited to the above embodiments, and any improvements and modifications made by those skilled in the art based on the disclosure of this application without departing from the scope of this application should be within the protection scope of this application.

Claims

1. A fixture for non-destructive repair and cleaning of the first diaphragm of all Ricoh printhead series, characterized in that: Includes Ricoh printhead body, earless repair diaphragm, glue coating roller, glue scraping and thickness control tooling, transfer tape, kit positioning tooling, and pressing tooling; The earless repair diaphragm is the first earless structure diaphragm of the nozzle, which can be disassembled and cleaned or directly replaced. Subsequent diaphragms reuse the original intact structure of the nozzle. The set-type positioning fixture does not require disassembly of the original positioning block of the Ricoh printhead and can be directly assembled for positioning; The transfer tape is used for pre-fixation and transfer alignment of the earless repair diaphragm.

2. The non-destructive repair and cleaning fixture for the first diaphragm of all Ricoh printheads according to claim 1, characterized in that: The adhesive scraping and thickness control tool is used to scrape the adhesive layer smooth after application, controlling the adhesive layer thickness to 0.01~0.10mm.

3. The non-destructive repair and cleaning fixture for the first diaphragm of all Ricoh printheads according to claim 1, characterized in that: The transfer tape is a special double-sided tape with die-cutting process, used for pre-fixing and transfer alignment of the earless repair diaphragm.

4. The fixture for non-destructive repair and cleaning of the first diaphragm of all Ricoh printheads according to claim 1, characterized in that: The adhesive roller is used for uniformly applying adhesive to the bonding surface of the nozzle, and the pressing fixture is used for applying and maintaining pressure after the diaphragm is bonded.

5. A non-destructive repair and cleaning process for the first diaphragm of all Ricoh printhead series, characterized in that, The non-destructive repair and cleaning fixture for the first diaphragm of the entire Ricoh printhead series, as described in any one of claims 1 to 4, is used. Includes the following steps: The first step is to remove the first diaphragm of the nozzle and clean the base surface: remove the first diaphragm of the nozzle without ear, clean the base surface of the nozzle bonding to remove dust and old adhesive, and at the same time clean and unblock the removed first diaphragm. The second step is to use a glue roller to evenly apply glue to the bonding surface of the nozzle. The third step is to use a glue scraper to smooth the glue layer, controlling the glue layer thickness to be between 0.01 and 0.10 mm. The fourth step is to fix the cleaned old diaphragm or the new earless repair diaphragm onto the transfer tape and pre-position it using the transfer fixture. The fifth step is to install the kit positioning fixture onto the original positioning block of the printhead to achieve precise alignment between the transfer carrier and the printhead. Step 6: Transfer the earless repair diaphragm to the nozzle bonding surface, peel off the transfer tape, press and hold the pressure to complete the repair or cleaning and reassembly.

6. The non-destructive repair and cleaning process for the first diaphragm of the entire Ricoh printhead series according to claim 5, characterized in that: The repair methods include two options: direct bonding with glue applied by roller or bonding with transfer tape. The first earpiece can be replaced or cleaned and reassembled.

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