Cleaning jig for ultra-small optical product

Abstract

The application discloses a cleaning jig for super-small optical products, which comprises upper and lower jig plates capable of being locked by pressing, both of which are provided with communication grooves and are detachably installed with pressing plates, filter screens are arranged between the pressing plates and the jig plates, the lower jig plate is provided with a placing plate with a plurality of cleaning grooves, and the cleaning grooves are communicated with the communication grooves. During cleaning, the products are independently placed in the cleaning grooves, are cleaned by a cleaning device step by step, are then washed by pure water, are hit on the filter screens to remove adhered dirt, and are finally dried and taken out. The application adopts independent cleaning in a split mode, avoids product collision damage, guarantees cleaning liquid circulation through the filter screens, solves capillary phenomenon, supports a washing mode, and buffers collision through a Teflon inner wall. The filter screens can be replaced independently, and the cost is controllable. Array arrangement and flip buckle cooperation with torsional springs are convenient, efficient and suitable for high-quality batch cleaning of super-small optical products.

Description

Technical Field

[0001] This invention relates to the field of cleaning fixture technology, and more specifically to a cleaning fixture for ultra-small optical products. Background Technology

[0002] With the explosive growth in production capacity of automotive MLA, optical communication silicon lenses, consumer micro-camera prisms, and infrared ultra-small components, the demand for ultra-small (≤5mm) optical components is increasing year by year. Currently, 70% of small and medium-sized production lines in domestic optical factories are still using bulk PP / nylon mesh bags for crude ultrasonic cleaning. Bulk stacking collisions and cross-contamination of debris are common pain points in the industry: edge chipping of lenses, speckled dirt on the mirror surface, and pinhole defects in coatings account for more than 40% of all defects. High-end automotive-grade and optical communication products have been forced to phase out bulk mesh cleaning and fully switch to compartment-based independent cleaning. However, this still cannot avoid the secondary contamination caused by the powder generated after the ultra-small optical products collide with the tank due to their small size and free state in the cleaning solution, which also causes product damage. Independent compartment ultra-small optical products also cannot avoid the problem of secondary contamination caused by water accumulation (capillary action) due to the small size of the drainage tank and the material selection. General cleaning relies on cleaning solution and does not use rinsing to prevent damage to the product. Summary of the Invention

[0003] To address the shortcomings of existing technologies, this invention provides a cleaning fixture for ultra-miniature optical products. By employing a compartmentalized cleaning structure, each ultra-miniature optical product is independently placed in its own cleaning tank, fundamentally solving the defects such as chipped edges, broken edges, and pinholes in the coating caused by collisions between products in traditional bulk mesh bag cleaning methods. Considering the small mass of ultra-miniature optical products (≤5mm) and their free-floating state in the cleaning solution, the independent compartmentalized design effectively avoids collisions caused by the products being in a free-floating state.

[0004] To achieve the above objectives, the present invention provides the following technical solution: A cleaning fixture for ultra-small optical products includes an upper fixture plate and a lower fixture plate. Both the upper and lower fixture plates are provided with several communicating grooves. An upper pressure plate and a lower pressure plate are detachably mounted on the upper and lower fixture plates, respectively. An upper filter screen is disposed between the upper pressure plate and the upper fixture plate, and a lower filter screen is disposed between the lower pressure plate and the lower fixture plate. A placement plate is provided on the lower fixture plate, and several cleaning grooves are provided on the placement plate. The upper and lower fixture plates can be pressed and locked together. The upper and lower filter screens are located at opposite ends of the cleaning grooves, and the cleaning grooves communicate with the communicating grooves on the upper and lower fixture plates. The cleaning method includes the following steps: S1. Open the cleaning fixture and place the ultra-small optical products in; S2. Place the ultra-small optical products into each independent cleaning tank, and close the upper and lower fixture plates. The ultra-small optical products are placed independently in the cleaning tank and sealed therein by the upper and lower filter screens. S3. Place the cleaning fixture into the cleaning equipment and clean it step by step through each tank of the cleaning equipment; S4. Finally, rinse each individual cleaning tank on the cleaning fixture with pure water. The ultra-small optical products are splashed onto the upper and lower filter screens to wash away the dirt with strong adhesion on the ultra-small optical products. S5. After cleaning, put the cleaning fixture into the drying oven to drain and dry. S6. After cleaning and drying, open the cleaning fixture, take out the ultra-small optical products and place them in the designated locations.

[0005] Furthermore, one end of the upper fixture plate and the lower fixture plate are hinged, and the other end is provided with a locking mechanism that can fasten and lock the upper fixture plate and the lower fixture plate together.

[0006] Furthermore, the upper fixture plate is provided with an elastic buckle at the end away from the hinge, and the lower fixture plate is provided with a buckle block at the end away from the hinge. The elastic buckle can be engaged with the buckle block to achieve locking.

[0007] Furthermore, a torsion spring is provided at the hinge of the upper fixture plate and the lower fixture plate. When the upper fixture plate and the lower fixture plate are fastened together, the torsion spring is in a charged state. When the upper fixture plate and the lower fixture plate are opened, the torsion spring is in a released state.

[0008] Furthermore, the upper fixture plate and the upper pressure plate, as well as the lower fixture plate and the lower pressure plate, are detachably connected by bolts.

[0009] Furthermore, both the connecting tank and the cleaning tank are arranged in an array.

[0010] Furthermore, a Teflon protective layer is provided on the inner wall of the cleaning tank of the placement plate.

[0011] Furthermore, the upper fixture plate, lower fixture plate, upper pressure plate, and lower pressure plate are all made of metal.

[0012] Compared with the prior art, the beneficial effects of the present invention are: 1. Effectively avoids collision damage between products: The separate cleaning structure, with each ultra-small optical product placed independently in its own cleaning tank, fundamentally solves the problems of chipped edges, broken edges, and pinholes in the coating caused by collisions between products in traditional bulk mesh bag cleaning methods. Considering the small mass of ultra-small optical products (≤5mm) and their free-floating state in the cleaning solution, the independent compartment design effectively avoids collisions caused by the products being in a free-floating state.

[0013] 2. Effectively prevents secondary contamination and damage caused by product collision with the tank wall: The Teflon protective layer on the inner wall of the cleaning tank is soft and can effectively buffer the collision between ultra-small optical products and the tank wall, avoiding secondary contamination from the powder generated by the collision and damage to the products themselves. Teflon material also has excellent acid and alkali resistance, making the fixture suitable for various cleaning solution systems.

[0014] 3. Solving the problem of secondary contamination caused by capillary action: The upper and lower filter screens effectively solve the problem of poor cleaning fluid flow caused by the small size of the cleaning tank for ultra-small optical products, i.e., capillary action. The filter screens ensure smooth flow of the cleaning fluid in the cleaning tank, avoiding secondary contamination caused by the accumulation of cleaning fluid, and significantly improving the cleaning effect.

[0015] 4. Supports rinsing cleaning method, effectively removing stubborn dirt: Traditional cleaning methods avoid rinsing due to concerns about product damage. In this invention, the upper and lower filters catch the optical product being lifted by the water flow during rinsing, and the flexible filter provides a soft buffer and disperses the concentrated water flow, preventing high pressure from a single point directly impacting the lens surface. This allows the invention to effectively remove stubborn dirt from optical products using a rinsing method, solving the problem of insufficient cleaning by simply soaking in cleaning solution.

[0016] 5. Controllable Cleaning Costs: The external metal pressure plate makes the filter screen and cleaning tank independent. As a consumable part, the filter screen can be replaced individually when deformed or clogged, without replacing the entire fixture. The value of the filter screen is far lower than that of optical products, and the replaceable filter screen design effectively controls the cost of long-term batch cleaning.

[0017] 6. High cleaning efficiency and convenient operation: The array arrangement of the connecting tank and the cleaning tank enables the batch cleaning of multiple products in a single operation; the automatic spring-loaded design of the flip-top buckle and torsion spring makes product loading and unloading convenient and efficient; the overall metal frame ensures the structural strength of the fixture and the reliability of long-term use, combining cleaning quality, cleaning efficiency and mass production feasibility. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort, wherein: Figure 1 A schematic diagram of the structure of a cleaning fixture for ultra-small optical products Figure 1 ; Figure 2 A schematic diagram of the structure of a cleaning fixture for ultra-small optical products Figure 2 ; Figure 3 A schematic diagram of the structure of a cleaning fixture for ultra-small optical products Figure 3 .

[0019] The markings in the diagram are as follows: 1. Upper fixture plate; 2. Lower fixture plate; 3. Upper filter screen; 4. Lower filter screen; 5. Upper pressure plate; 6. Lower pressure plate; 7. Placement plate; 8. Cleaning tank; 9. Elastic buckle; 10. Buckle block; 11. Torsion spring; 12. Connecting groove. Detailed Implementation

[0020] In the description of this invention, it should be noted that the directional terms such as "center", "horizontal (X)", "longitudinal (Y)", "vertical (Z)", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", and "counterclockwise" indicate the orientation and positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention 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. They should not be construed as limiting the specific protection scope of this invention.

[0021] 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 technical features. Thus, the use of "first" and "second" to define a feature may explicitly or implicitly include one or more of that feature. In the description of this invention, "several" or "a number" means two or more, unless otherwise explicitly specified.

[0022] A cleaning fixture for ultra-miniature optical products, such as Figure 1-3 As shown, the fixture includes an upper fixture plate 1 and a lower fixture plate 2. Both the upper fixture plate 1 and the lower fixture plate 2 are provided with a plurality of communicating grooves 12. An upper pressure plate 5 and a lower pressure plate 6 are detachably installed on the upper fixture plate 1 and the lower fixture plate 2, respectively. An upper filter screen 3 is provided between the upper pressure plate 5 and the upper fixture plate 1, and a lower filter screen 4 is provided between the lower pressure plate 6 and the lower fixture plate 2. A placement plate 7 is provided on the lower fixture plate 2, and a plurality of cleaning grooves 8 are provided on the placement plate 7. The upper fixture plate 1 and the lower fixture plate 2 can be pressed and locked. The upper filter screen 3 and the lower filter screen 4 are located at both ends of the cleaning grooves 8, and the cleaning grooves 8 are connected to the communicating grooves 12 on the upper fixture plate 1 and the lower fixture plate 2. The cleaning method includes the following steps: S1. Open the cleaning fixture and place the ultra-small optical products in; S2. Place the ultra-small optical products into each independent cleaning tank 8, and close the upper fixture plate 1 and the lower fixture plate 2. The ultra-small optical products are placed independently in the cleaning tank 8 and are independently isolated and sealed in it through the upper filter screen 3 and the lower filter screen 4. S3. Place the cleaning fixture into the cleaning equipment and clean it step by step through each tank of the cleaning equipment; S4. Finally, rinse each individual cleaning tank 8 on the cleaning fixture with pure water. The ultra-small optical products are splashed on the upper and lower filter screens to wash away the dirt with strong adhesion on the ultra-small optical products. S5. After cleaning, put the cleaning fixture into the drying oven to drain and dry. S6. After cleaning and drying, open the cleaning fixture, take out the ultra-small optical products and place them in the designated locations.

[0023] Preferably, one end of the upper fixture plate 1 and the lower fixture plate 2 is hinged, and the other end is provided with a locking mechanism that can fasten and lock the upper fixture plate 1 and the lower fixture plate 2 together. Specifically, the upper fixture plate 1 and the lower fixture plate 2 are rotatably connected by hinge at one end, and locked and fixed by a locking mechanism at the other end, so that the upper and lower fixture plates can be easily switched between open and closed states. The hinge and locking design allows operators to open and lock the fixture with just one hand, eliminating the need to pick up and put down two separate upper and lower parts, significantly improving operational convenience and efficiency during batch cleaning.

[0024] Preferably, the upper fixture plate 1 is provided with an elastic buckle 9 at the end away from the hinge, and the lower fixture plate 2 is provided with a buckle block 10 at the end away from the hinge. The elastic buckle 9 can be fastened to the buckle block 10 to achieve locking. Specifically, the elastic buckle 9 is hinged to the upper fixture plate 1, and a spring is set between the elastic buckle 9 and the upper fixture plate 1. The spring applies elastic force to achieve the effect of elastic rotation and fastening, realizing the engagement and disengagement with the buckle block 10. When the upper fixture plate 1 is pressed down, the spring is stressed and the elastic buckle 9 automatically rotates and then engages with the buckle block 10. Then the spring releases its elastic force, locking the elastic buckle 9 and the buckle block 10. When it is necessary to open, an external force is applied to make the elastic buckle 9 rotate and disengage from the buckle block 10.

[0025] Advantages: The combination structure of the elastic buckle 9 and the buckle block 10 is simple and reliable. Locking and unlocking operations can be completed without the need for additional tools, which reduces the complexity of operation. At the same time, it ensures the closing stability of the fixture during the cleaning process and prevents the upper fixture plate 1 and the lower fixture plate 2 from accidentally opening and causing the product to fall.

[0026] Preferably, a torsion spring 11 is provided at the hinge of the upper fixture plate 1 and the lower fixture plate 2. When the upper fixture plate 1 and the lower fixture plate 2 are fastened together, the torsion spring 11 is in a stored state, and when the upper fixture plate 1 and the lower fixture plate 2 are opened, the torsion spring 11 is in a released state. Specifically, the torsion spring 11 is installed at the hinge shaft. When the upper fixture plate 1 and the lower fixture plate 2 are fastened together, the torsion spring 11 is compressed or twisted to store elastic potential energy. When the locking mechanism is released, the potential energy stored in the torsion spring 11 is released, driving the upper fixture plate 1 to automatically spring open. The automatic opening function of the fixture is realized by the setting of torsion spring 11. After unlocking, the operator does not need to manually flip open the upper fixture plate 1. The upper fixture plate 1 can automatically rotate to the open state under the action of torsion spring 11, which further improves the convenience of picking up and putting down products, reduces operation steps, and improves production efficiency.

[0027] Preferably, the upper fixture plate 1 and the upper pressure plate 5, as well as the lower fixture plate 2 and the lower pressure plate 6, are detachably connected by bolts. Specifically, the upper pressure plate 5 and the lower pressure plate 6 are detachably fixed to the upper fixture plate 1 and the lower fixture plate 2 by bolts, respectively, while the upper filter screen 3 and the lower filter screen 4 are clamped and fixed between the pressure plate and the fixture plate.

[0028] The bolted connection makes filter replacement extremely convenient. When the filter becomes deformed or clogged due to prolonged batch cleaning, simply loosen the bolts to replace the filter; there's no need to replace the entire fixture plate. The filter is significantly less valuable than optical products, and the replaceable filter design keeps cleaning costs under control. Furthermore, the upper and lower metal pressure plates effectively resist potential high temperatures, acidic or alkaline cleaning solutions, and filter deformation caused by prolonged immersion during cleaning, preventing the filter from becoming unable to hold the ultra-small optical products and causing them to escape.

[0029] Preferably, the connecting groove 12 and the cleaning groove 8 are both arranged in an array; Specifically, multiple connecting slots 12 and cleaning slots 8 are arranged in a regular array on the upper fixture plate 1 and the lower fixture plate 2, with each cleaning slot 8 independently corresponding to a product placement position; The array arrangement allows multiple ultra-small optical products to be cleaned simultaneously on a single fixture plate, enabling batch cleaning and significantly improving cleaning efficiency. Meanwhile, each product is independently housed in its own cleaning tank 8, and this one-hole-one-tank design fundamentally avoids collisions between products.

[0030] Preferably, a Teflon protective layer is provided on the inner wall of the cleaning tank 8 of the placement plate 7. Specifically, Teflon (polytetrafluoroethylene, PTFE) is a material with excellent chemical corrosion resistance and low coefficient of friction, and it is used as a coating on the inner wall of the cleaning tank 8. The Teflon protective layer is soft and effectively cushions the impact between ultra-small optical products and the inner wall of the cleaning tank 8 during the cleaning process, preventing damage such as chipping or breakage. Simultaneously, Teflon's excellent acid and alkali resistance allows the cleaning fixture to be cleaned with acidic or alkaline cleaning solutions, broadening the applicability of the cleaning process. The design, with a metal overall frame and non-metallic (Teflon) cleaning parts, ensures overall strength without compromising cleaning effectiveness.

[0031] Preferably, the upper fixture plate 1, the lower fixture plate 2, the upper pressure plate 5, and the lower pressure plate 6 are all made of metal materials; Specifically, metallic materials have high mechanical strength and good heat and corrosion resistance, making them suitable as the overall frame structure material for jigs; The metal frame ensures the structural stability of the cleaning fixture under high-temperature cleaning fluid and long-term cleaning processes, preventing deformation and guaranteeing the fixture's service life and reliable reusability. Simultaneously, the metal pressure plate provides reliable support for the filter screen, preventing deformation due to liquid impact during cleaning.

[0032] advantage: 1. Effectively avoids collision damage between products: The separate cleaning structure, with each ultra-small optical product placed independently in its own cleaning tank 8, fundamentally solves the problems of chipped edges, broken edges, and pinholes in the coating caused by collisions between products in traditional bulk mesh bag cleaning methods. Considering the small mass of ultra-small optical products (≤5mm) and their free-floating state in the cleaning solution, the independent compartment design effectively avoids collisions caused by the products being in a free-floating state.

[0033] 2. Effectively prevents secondary contamination and damage caused by product collision with the tank wall: The Teflon protective layer on the inner wall of the cleaning tank 8 is soft and can effectively buffer the collision between ultra-small optical products and the tank wall, avoiding secondary contamination from powder generated by the collision and damage to the products themselves. The Teflon material also has excellent acid and alkali resistance, making the fixture suitable for various cleaning solution systems.

[0034] 3. Solving the problem of secondary contamination caused by capillary action: The upper and lower filters 3 and 4 effectively solve the problem of poor cleaning fluid flow caused by the small size of the ultra-small optical product cleaning tank 8, i.e., capillary action. The filters ensure smooth flow of the cleaning fluid in the cleaning tank 8, avoiding secondary contamination caused by the accumulation of cleaning fluid, and significantly improving the cleaning effect.

[0035] 4. Supports rinsing cleaning method, effectively removing stubborn dirt: Traditional cleaning methods avoid rinsing due to concerns about product damage. In this invention, the upper and lower filters catch the optical product being lifted by the water flow during rinsing, and the flexible filter provides a soft buffer and disperses the concentrated water flow, preventing high pressure from a single point directly impacting the lens surface. This allows the invention to effectively remove stubborn dirt from optical products using a rinsing method, solving the problem of insufficient cleaning by simply soaking in cleaning solution.

[0036] 5. Controllable Cleaning Costs: The external metal pressure plate makes the filter screen and cleaning tank 8 independent. As a consumable part, the filter screen can be replaced individually when deformed or clogged, without replacing the entire fixture. The value of the filter screen is far lower than that of optical products, and the replaceable filter screen design effectively controls the cost of long-term batch cleaning.

[0037] 6. High cleaning efficiency and convenient operation: The array arrangement of the connecting tank 12 and the cleaning tank 8 enables the cleaning of multiple products in a single batch; the automatic pop-up design of the flip cover buckle and the torsion spring 11 makes it convenient and efficient to pick up and put down products; the overall metal frame ensures the structural strength of the fixture and the reliability of long-term use, combining cleaning quality, cleaning efficiency and mass production feasibility.

[0038] The above description is merely a preferred embodiment of the present invention. The scope of protection of the present invention is not limited to the above embodiments. All technical solutions falling within the scope of the present invention's concept are within the scope of protection of the present invention. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principles of the present invention should also be considered within the scope of protection of the present invention.

Claims

1. A cleaning fixture for ultra-miniature optical products, characterized in that: The fixture includes an upper fixture plate and a lower fixture plate. Both the upper and lower fixture plates are provided with several communicating grooves. An upper pressure plate and a lower pressure plate are detachably installed on the upper and lower fixture plates, respectively. An upper filter screen is provided between the upper pressure plate and the upper fixture plate, and a lower filter screen is provided between the lower pressure plate and the lower fixture plate. A placement plate is provided on the lower fixture plate, and several cleaning grooves are provided on the placement plate. The upper and lower fixture plates can be pressed and locked together. The upper and lower filter screens are located at both ends of the cleaning grooves, and the cleaning grooves are connected to the communicating grooves on the upper and lower fixture plates. The cleaning method includes the following steps: S1. Open the cleaning fixture and place the ultra-small optical products in; S2. Place the ultra-small optical products into each independent cleaning tank, and close the upper and lower fixture plates. The ultra-small optical products are placed independently in the cleaning tank and sealed therein by the upper and lower filter screens. S3. Place the cleaning fixture into the cleaning equipment and clean it step by step through each tank of the cleaning equipment; S4. Finally, rinse each individual cleaning tank on the cleaning fixture with pure water. The ultra-small optical products are splashed onto the upper and lower filter screens to wash away the dirt with strong adhesion on the ultra-small optical products. S5. After cleaning, put the cleaning fixture into the drying oven to drain and dry. S6. After cleaning and drying, open the cleaning fixture, take out the ultra-small optical products and place them in the designated locations.

2. The cleaning fixture for ultra-miniature optical products according to claim 1, characterized in that: The upper fixture plate and the lower fixture plate are hinged at one end, and the other end is provided with a locking mechanism that can fasten and lock the upper fixture plate and the lower fixture plate together.

3. The cleaning fixture for ultra-miniature optical products according to claim 2, characterized in that: The upper fixture plate is provided with an elastic buckle at the end away from the hinge, and the lower fixture plate is provided with a buckle block at the end away from the hinge. The elastic buckle can be engaged with the buckle block to achieve locking.

4. The cleaning fixture for ultra-miniature optical products according to claim 2, characterized in that: A torsion spring is provided at the hinge of the upper fixture plate and the lower fixture plate. When the upper fixture plate and the lower fixture plate are fastened together, the torsion spring is in a charged state. When the upper fixture plate and the lower fixture plate are opened, the torsion spring is in a released state.

5. A cleaning fixture for ultra-miniature optical products according to claim 1, characterized in that: The upper fixture plate and the upper pressure plate, as well as the lower fixture plate and the lower pressure plate, are detachably connected by bolts.

6. A cleaning fixture for ultra-miniature optical products according to claim 1, characterized in that: Both the connecting channels and the cleaning channels are arranged in an array.

7. A cleaning fixture for ultra-miniature optical products according to claim 1, characterized in that: The inner wall of the cleaning tank of the placement plate is provided with a Teflon protective layer.

8. A cleaning fixture for ultra-miniature optical products according to claim 1, characterized in that: The upper fixture plate, lower fixture plate, upper pressure plate, and lower pressure plate are all made of metal.

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