A kind of non-destructive repair tooling and matching repair process for diaphragm of all series of RIG light

Abstract

This invention discloses a non-destructive repair fixture and process for Ricoh printhead diaphragms across its entire range, belonging to the field of inkjet printhead repair technology. Designed for universal compatibility with all Ricoh industrial inkjet printheads, the core components include the Ricoh printhead body, a diaphragm without ear for repair, a custom-designed diaphragm with ear, a glue scraper, a roller glue application mechanism, a dedicated set-type positioning fixture, and a pressing fixture. This invention directly limits the fit using the dedicated set-type positioning fixture; combined with the custom-designed diaphragm with side positioning ears, it is sequentially stacked with the earless repair diaphragm. Repair is completed through glue scraping and cleaning, uniform glue application by rollers, pre-positioning of the custom diaphragm, precise alignment of the set-type fixture, and overall pressing and fixing. This solves the industry pain points of traditional Ricoh printhead repair, such as easy damage to the printhead body during disassembly, large diaphragm positioning deviations, and easy deformation and ink leakage during assembly. It offers strong versatility, convenient operation, and precise positioning, significantly improving the repair yield and service life of all Ricoh printheads.

Description

Technical Field

[0001] This invention relates to the field of industrial inkjet printer printhead repair technology, and in particular to a non-destructive repair tooling and supporting repair process for the diaphragms of Ricoh's full range of printheads. Background Technology

[0002] Ricoh industrial inkjet printheads are core components of digital printing, advertising inkjet printing, and industrial inkjet printing equipment, with a huge market presence and a consistently high demand for diaphragm replacement. During long-term use, the nozzle diaphragm of Ricoh printheads is prone to aging, wear, clogging, and damage, requiring timely replacement to restore normal printing performance.

[0003] The current conventional Ricoh printhead repair methods in the industry have many drawbacks:

[0004] Firstly, traditional repairs require disassembling the original positioning pins of the nozzle before the diaphragm can be aligned and installed. The disassembly process can easily damage the nozzle body and deform the positioning holes, causing permanent damage to the nozzle.

[0005] Secondly, Ricoh does not provide repair diaphragms with positioning ears. Conventional repair diaphragms lack positioning structures, making precise alignment during installation difficult and prone to problems such as diaphragm displacement, warping, and ink leakage, resulting in an extremely low repair yield.

[0006] Third, existing maintenance tools and fixtures have poor versatility, can only be used with a single model of Ricoh printhead, and do not have dedicated matching diaphragms, making it impossible to achieve standardized and efficient non-destructive repairs, which greatly increases maintenance costs and equipment downtime costs.

[0007] Based on the aforementioned industry pain points, this invention has developed a dedicated kit-style positioning tooling and independently customized matching ear diaphragms, completely solving the core problem of repairing all Ricoh printheads. Summary of the Invention

[0008] The purpose of this invention is to overcome the defects of existing technology and provide a non-destructive repair tooling and process for Ricoh's entire series of printhead diaphragms. It is compatible with all Ricoh printhead models and innovatively adopts a kit-type positioning structure that does not require disassembling the original printhead positioning pin. It is paired with a custom-made diaphragm with ear, and the diaphragm and tooling are used in a one-to-one matching manner to achieve standardized repair with non-destructive, high precision and high yield, completely avoiding all kinds of drawbacks of traditional repair.

[0009] To achieve the above objectives, the present invention adopts the following technical solution:

[0010] A non-destructive repair tooling for Ricoh's entire range of printhead diaphragms includes a Ricoh printhead body, a diaphragm without ears, a custom-made diaphragm with ears, a glue scraping tool, a glue application roller, a set of positioning tooling, and a pressing tooling.

[0011] The set-type positioning fixture has positioning holes that precisely match the original positioning pins of the nozzle, and can be directly fitted onto the outside of the positioning pins without disassembling the original positioning pins, thus avoiding damage to the nozzle base.

[0012] The earless repair diaphragm is a special repair diaphragm without side ears. The custom-made ear-equipped diaphragm is not supplied by the original manufacturer. It is specially customized according to the specifications of Ricoh printhead and in conjunction with the positioning tooling of this kit. It has a special positioning ear reserved on the side. Multiple custom-made ear-equipped diaphragms and earless repair diaphragms are stacked and assembled in sequence. The positioning ear is used to achieve preliminary pre-positioning, and then the tooling is used to complete precise alignment.

[0013] In some preferred embodiments, the adhesive scraper is further configured to use a hard, wear-resistant scraper blade, which is specifically used to scrape and clean residual adhesive, old adhesive and impurities on the substrate surface where the nozzle is attached, so as to ensure that the bonding surface of the film is flat and clean.

[0014] In some preferred embodiments, the glue-applying roller adopts a roller-type glue-applying roller structure, which can apply glue at a uniform speed, achieve uniform glue application on the bonding surface without dead corners, and avoid glue overflow and leakage problems.

[0015] In some preferred embodiments, the pressing fixture adopts an adjustable pressing structure, which is used to apply and maintain pressure as a whole after the diaphragm is positioned, to ensure that the diaphragm is tightly bonded to the nozzle base surface without voids or displacement.

[0016] This invention also provides a non-destructive repair process for the diaphragms of Ricoh's entire range of printheads, the steps of which are as follows:

[0017] 1. Glue removal and cleaning: Use a glue scraper to remove all old residue, dust, and impurities from the Ricoh printhead diaphragm mounting area to ensure a smooth and flat bonding surface;

[0018] 2. Roller coating: Use a coating roller to evenly coat the special nozzle bonding adhesive on the bonding surface of the nozzle or the back of the diaphragm, control the coating thickness to ensure a firm bond and without affecting the accuracy of the diaphragm;

[0019] 3. Diaphragm stacking: Place the first earless repair diaphragm at the bottom, and then stack the second and third custom-made ear-attached diaphragms in sequence. Use the positioning ears on the side of the custom diaphragms for initial alignment to complete the pre-stacking of the diaphragms;

[0020] 4. Kit Positioning: The exclusive kit positioning fixture is directly fitted onto the original positioning pins of the Ricoh printhead without disassembling or damaging any original structure of the printhead. The fixture limits the overall positioning of the stacked multiple films, achieving precise centering and eliminating positioning deviations.

[0021] 5. Pressing and fixing: Place the aligned nozzle and diaphragm into the pressing fixture, apply appropriate pressure and hold the pressure to ensure that the diaphragm and the nozzle base are completely and tightly bonded. After the pressure holding is completed, remove the fixture to complete the non-destructive repair.

[0022] Compared with the prior art, this application has at least the following beneficial technical effects:

[0023] 1. This tooling and process are based on the same dimensions and operating procedures, and are fully compatible with all Ricoh printheads of all models. No tooling changes or process adjustments are required, making it highly versatile.

[0024] 2. The core innovation lies in the independent customization of the ear-shaped diaphragm and its exclusive tooling kit, which can be used without removing the original positioning pins, thus avoiding printhead damage at the source. The diaphragm is precisely aligned, completely solving common maintenance problems such as assembly deformation, ink leakage, and displacement. It is suitable for batch standardized maintenance of all Ricoh printheads, significantly reducing maintenance costs and improving maintenance efficiency and yield. Attached Figure Description

[0025] Figure 1 Exploded view of the structure of the Ricoh printhead repair diaphragm without ear and the custom-made diaphragm with ear;

[0026] Figure 2 This is a schematic diagram of the adhesive scraping process for Ricoh printhead repair.

[0027] Figure 3 A schematic diagram of the adhesive application process for Ricoh printheads using a roller coating process.

[0028] Figure 4 A schematic diagram of the overlapping and bonding structure of an earless diaphragm patch and multiple custom-made ear diaphragm patches;

[0029] Figure 5 A schematic diagram of a modular positioning fixture that allows for direct positioning without removing the nozzle positioning pin;

[0030] Figure 6 This is a schematic diagram of the assembly state of multiple diaphragms stacked together.

[0031] Figure 7 This is a schematic diagram of the pressing, clamping, and fixing process after diaphragm assembly. Detailed Implementation

[0032] 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.

[0033] 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 common knowledge in the prior art.

[0034] This invention discloses a non-destructive repair fixture for Ricoh printhead diaphragms across the entire Ricoh printhead series, compatible with all Ricoh industrial inkjet printhead models on the market. Its core components include a Ricoh printhead body, a non-eared repair diaphragm, multiple custom-designed eared diaphragms, a glue scraper, a glue roller, a set-type positioning fixture, and a pressing fixture. The custom-designed eared diaphragms are exclusive parts, not provided by Ricoh, and are used only with this set-type positioning fixture, forming a dedicated matching system to ensure positioning accuracy.

[0035] During actual maintenance work, strictly follow these procedures:

[0036] 1. First execute Figure 2 The adhesive scraping process shown involves using an adhesive scraping tool to carefully clean the old adhesive and impurities from the Ricoh printhead diaphragm mounting area, ensuring that there are no residues or protrusions on the base surface.

[0037] 2. Then proceed Figure 3 The adhesive application process shown uses an adhesive roller to evenly apply special adhesive to the bonding surface of the nozzle or the bonding surface of the diaphragm, avoiding the problem of uneven adhesive application by hand.

[0038] 3. Then press Figure 4 The method involves stacking the diaphragms by using the first earless repair diaphragm as the bottom layer, and then stacking the second and third custom-made ear-attached diaphragms in sequence. The positioning ears of the custom-made diaphragms are used to quickly align the diaphragms and complete the pre-positioning.

[0039] 4. Then adopt Figure 5 The exclusive kit positioning fixture shown does not require disassembly or contact with the original positioning pins of the Ricoh printhead. Simply place the positioning hole of the fixture over the positioning pins and rely on the fixture to limit the overall positioning of the stacked diaphragms to achieve millimeter-level precise alignment.

[0040] 5. After positioning is completed, the following is formed. Figure 6 The overall stacked assembly structure shown is finally placed into... Figure 7 The pressing fixture shown applies constant pressure and holds it for a certain period of time to firmly bond the diaphragm to the nozzle base surface without gaps or displacement. After the pressure holding is completed, the fixture is removed, thus completing the entire non-destructive repair process for the Ricoh nozzle diaphragm.

[0041] The entire tooling structure is rationally designed, with custom-made diaphragms perfectly matched to the exclusive tooling. The process is standardized, and the operation is simple and easy to learn. It can handle all Ricoh printheads without the need to replace parts for different models. It enables non-destructive maintenance throughout the process, effectively extending the service life of Ricoh printheads and significantly reducing printhead maintenance and equipment usage costs. It has strong industry practicality and promotional value.

[0042] 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 kind of light full series of reason nozzle diaphragm nondestructive repair frock, it is characterized by: Including Ricoh printhead body, earless repair diaphragm, custom-made eared diaphragm, glue scraping tool, glue roller, set-type positioning tool, and pressing tool; The aforementioned kit positioning fixture does not require disassembling the original positioning pins that come with the Ricoh printhead body. The fixture positioning holes are directly fitted onto the outside of the original positioning pins of the printhead for limiting and positioning. It is used in conjunction with a custom-made diaphragm with ear tabs and is suitable for universal assembly and alignment of all Ricoh printhead series.

2. The non-destructive repair tooling for the LG full line of showerhead membranes as described in claim 1, wherein: The earless repair diaphragm has no positioning ear structure on the side and is a replacement diaphragm specifically for Ricoh printhead repair. The custom-made ear-equipped diaphragm is not supplied by the original manufacturer. It is specially customized for Ricoh printhead specifications and to match the kit positioning fixture. Positioning ears are reserved on the side. Multiple custom-made ear-equipped diaphragms and earless repair diaphragms are stacked and assembled in sequence.

3. The non-destructive repair tooling for the LG full line of showerhead membranes as described in claim 1, wherein: The adhesive scraper is used to remove residual adhesive, old adhesive, and impurities from the substrate surface of the Ricoh printhead diaphragm, serving as a pretreatment for diaphragm bonding.

4. The non-destructive repair tooling for the LG full line of showerhead membranes of claim 1, wherein: The adhesive roller is a roller structure used to apply adhesive evenly to the bonding surface of the Ricoh printhead or the surface of the film, ensuring that the film is firmly bonded and there is no excess adhesive.

5. A non-destructive repair process for a full range of optical light showerhead membranes, characterized by, The non-destructive repair fixture for Ricoh's full range of printhead diaphragms as described in any one of claims 1 to 4 includes the following steps: The first step is to remove the adhesive residue and clean the surface of the Ricoh printhead diaphragm mounting base using an adhesive scraper to remove impurities and old adhesive. The second step is roller coating: Use a coating roller to evenly apply special adhesive to the nozzle bonding surface or the film bonding surface to ensure uniform coating thickness. The third step is diaphragm stacking: Place the first earless repair diaphragm at the bottom, and then stack the second and third custom-made ear-attached diaphragms in sequence. Use the positioning ears of the custom-made diaphragms to achieve preliminary alignment and pre-positioning. Step 4, Kit Positioning: The exclusive kit positioning fixture is directly fitted onto the original positioning pins of the Ricoh printhead without removing the original positioning pins, to accurately position and limit the overall positioning of the multiple stacked films. Step 5, pressure clamping: The positioned diaphragm is pressed and held together with the Ricoh printhead body using a pressing fixture to complete the non-destructive repair and assembly of the Ricoh printhead diaphragm.

6. The process for non-destructive repair of RGP full series of shower head membrane according to claim 5, characterized in that: The custom-designed ear diaphragm is specifically designed to match this set of positioning tooling. The entire tooling and process are compatible with all Ricoh inkjet printhead models. The entire repair process does not damage or disassemble the original printhead positioning pin, achieving non-destructive and precise assembly.

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