A UV glue surface dryness testing device

Abstract

The utility model provides a kind of UV glue surface dryness testing device, solve the defects existing in prior art.The UV glue surface dryness testing device includes: first mechanism and second mechanism, the first mechanism connects the second mechanism;Wherein, the first mechanism includes pedestal, crossbeam, lifting structure and force structure, the pedestal is fixedly connected with the lifting mechanism, the crossbeam is connected with the lifting structure, the crossbeam below fixedly connected the force structure, the force structure connects test probe structure, this device is easy to operate, can effectively avoid human interference and sample pollution, with good repeatability.

Description

Technical Field

[0001] This utility model relates to the field of testing technology, and in particular to a UV adhesive surface drying test device. Background Technology

[0002] Ultraviolet (UV) curable adhesives are a type of functional adhesive that, under irradiation with ultraviolet light of a specific wavelength (typically 320–395 nm), rapidly crosslinks and cures oligomers with reactive diluents through a photoinitiator-induced free radical or cationic reaction. Compared to traditional thermosetting or solvent-based adhesives, UV adhesives offer significant advantages such as fast curing speed (in seconds), low energy consumption, and no volatile organic compounds (VOCs). Therefore, they are widely used in high-end manufacturing fields with high requirements for cleanliness, dimensional accuracy, and production efficiency, such as smartphone camera modules, LCD displays, fiber optic coupling, medical device packaging, and precision sensor assembly.

[0003] In the practical application of UV adhesives, surface dryness (or surface curing) is a key performance indicator. "Surface dryness" refers to the ability of a UV adhesive, after exposure to ultraviolet light, to form a continuous, non-sticky, non-flowing, and non-adhesive cured film on its surface within a short period. Good surface dryness is crucial for ensuring the smooth operation of subsequent processes: for example, in electronic assembly, if the adhesive surface is not sufficiently dried, it can easily attract dust, fibers, or particles from the operator's gloves, causing contamination of optical components or short circuits; on automated production lines, undried adhesive may deform or string during robotic gripping or conveying, affecting the product's appearance and structural reliability; in multilayer coating or stacking processes, insufficient surface dryness can also lead to interlayer miscibility or interface defects.

[0004] Currently, the assessment of the surface drying properties of UV adhesives still mainly relies on manual judgment. A typical procedure involves placing a sample coated with UV adhesive under a UV lamp for a set time, then having an operator lightly touch the adhesive surface with a fingertip, cotton swab, filter paper, or plastic rod, judging whether it has reached surface dryness based on subjective feelings such as "stickiness," "stringiness," or "surface marks." While this method is simple and inexpensive, it has several insurmountable drawbacks: (1) The judgment results are highly dependent on the operator's individual experience and tactile sensitivity, and lack objective and unified judgment criteria. Different people have different understandings of "slightly sticky" or "basically non-sticky". Even the same operator may give inconsistent conclusions in different batches of tests due to fatigue or distraction, which seriously affects the repeatability and reliability of the test results.

[0005] (2) Contact testing methods can interfere with or contaminate the test samples. Before the colloid is fully cured, any physical contact may damage its surface morphology, leaving indentations or scratches; at the same time, the surfaces of tools such as fingers and cotton swabs may carry grease, sweat or particles, which may contaminate the colloid surface in reverse, leading to distorted test results and even affecting the subsequent use of the sample.

[0006] (3) Existing testing processes generally lack effective control over key operating parameters. For example, factors such as contact force, contact time, and probe material can significantly affect the surface dryness judgment results, but manual operation makes it difficult to ensure the consistency of these conditions. Especially in different seasons or different workshop environments, test results fluctuate greatly, making it difficult to achieve effective comparison across time and locations.

[0007] To reduce the impact of human factors, mechanical devices were initially used to assist in testing, such as metal needles or plastic columns at a fixed height that were allowed to fall freely into contact with the adhesive surface to observe whether adhesion occurred. However, the device lacked a reliable vertical guidance mechanism, causing the probes to easily deviate, resulting in uneven contact positions and pressures. In addition, adhesive residue easily remained on the probe surface after multiple tests, and without a self-cleaning or replacement mechanism, the accuracy of subsequent tests would be directly affected.

[0008] Although attempts have been made to introduce technologies such as optical reflection, infrared thermal imaging, or micro-force sensing into existing technologies for non-contact or semi-contact surface dryness testing, these solutions are often complex, costly, difficult to debug, and have stringent requirements for the testing environment, making them difficult to promote and apply.

[0009] In summary, the current field of UV adhesive surface drying property testing still lacks a dedicated testing device that is easy to operate, effectively avoids human interference and sample contamination, has good repeatability, and can operate stably under near-actual process conditions. Designing such a device would have significant engineering application value. Utility Model Content

[0010] To address the shortcomings of existing technologies, this invention aims to provide a UV adhesive surface drying property testing device. This device has a simple structure, is easy to operate, and provides accurate and reliable test results.

[0011] To achieve the above objectives, the present invention adopts the following technical solution: A UV adhesive surface drying property testing device includes: a first mechanism and a second mechanism; The first institution includes: Base; A lifting structure is provided above the base; A crossbeam is connected to the lifting structure and is driven by the lifting structure to move vertically. The force-measuring structure is fixedly installed below the crossbeam; and A test probe structure is connected below the force measuring structure, and one end of the test probe structure facing the base is provided with a test probe for contacting the surface of the gel sample. The second mechanism is electrically connected to the force-measuring structure of the first mechanism, and collects the test data of the force-measuring structure in real time and generates a test report.

[0012] In a preferred embodiment, the other end of the test probe structure is provided with a circular hole, which is detachably connected to the force measuring structure via a pin.

[0013] In a preferred embodiment, the shape of the test probe tip includes a spherical, conical, disc-shaped, pointed cone, or cylindrical shape. More preferably, the test probe tip is spherical.

[0014] In a preferred embodiment, the diameter of the test probe tip is 1mm-50mm. More preferably, the diameter of the test probe tip is 5mm-40mm. More preferably, the diameter of the test probe tip is 10mm-30mm. More preferably, the diameter of the test probe tip is 15mm-25mm.

[0015] In a preferred embodiment, the length of the test probe is 5mm-300mm. More preferably, the length of the test probe is 50mm-200mm. Even more preferably, the length of the test probe is 100mm-150mm.

[0016] In a preferred embodiment, the material of the test probe tip includes one or a combination of at least two of the following: synthetic ruby ​​(alumina (Al2O3)), silicone, plastic, stainless steel, glass, and ceramic.

[0017] In a preferred embodiment, the hardness of the tip of the test probe is Shore A50.

[0018] In a preferred embodiment, the base is made of one or a combination of at least two of the following materials: marble, cast iron, granite, stainless steel (such as 304 stainless steel, 316L stainless steel), carbon steel, and ceramics (such as silicon carbide (SiC) ceramics).

[0019] In a preferred embodiment, the surface flatness error of the base is ≤0.05mm. More preferably, the surface flatness error of the base is ≤0.03mm. Even more preferably, the surface flatness error of the base is ≤0.01mm.

[0020] In a preferred embodiment, the lifting structure includes a lifting drive component and a lifting component that is driveably connected to the lifting drive component.

[0021] In a preferred embodiment, the lifting component includes one of a screw, a slide rail, and a conveyor belt. More preferably, the lifting component is a screw.

[0022] In a preferred embodiment, the lifting structure includes one or at least two lifting components. More preferably, the lifting structure includes at least two lifting components. More preferably, the lifting structure includes two lifting components. When the lifting structure includes two lifting components, the lifting components are respectively vertically and oppositely disposed on both sides of the base.

[0023] In a preferred embodiment, the lifting drive component includes one of a pneumatic cylinder and an electric cylinder. More preferably, the lifting drive component is an electric cylinder.

[0024] In a preferred embodiment, the force measuring structure includes a tension sensor.

[0025] In a preferred embodiment, the force measuring structure is an S-shaped tension sensor.

[0026] In a preferred embodiment, the tension sensor has a range of 0-10N and an accuracy of ±0.1%FS.

[0027] In a preferred embodiment, the crossbeam is provided with a through hole, and the lifting component passes through the through hole.

[0028] In a preferred embodiment, the number of through holes is the same as the number of lifting components.

[0029] In a preferred embodiment, when the lifting component is a screw, the inner wall of the through hole on the crossbeam is provided with a thread that matches the screw.

[0030] Compared with the prior art, the technical solution of this utility model has the following beneficial effects: (1) Point contact, eliminating the influence of area: The probe with a spherical end is used, and the contact with the adhesive layer is theoretically a point contact or a very small area contact. This fundamentally eliminates the problem of contact area change caused by macroscopic unevenness of the adhesive layer, so that the test results only reflect the adhesion of the adhesive layer surface, which greatly improves the accuracy and repeatability of the test.

[0031] (2) Simple structure and convenient operation: The device has a high degree of integration and the testing process is automated, which reduces human error and improves testing efficiency.

[0032] (3) Wide range of applications: It can be used for surface tack testing of multiple types of adhesives, and is especially suitable for testing UV adhesives with high hardness and difficult surface leveling. Attached Figure Description

[0033] The accompanying drawings, which constitute a part of this application, are used to provide a further understanding of this application. The illustrative embodiments and descriptions of this application are used to explain this application and do not constitute an undue limitation of this application. In the drawings: Figure 1 This is a diagram of a UV adhesive surface drying test device according to a preferred embodiment of the present invention.

[0034] Legend: 1. Base; 2. Test probe structure; 3. Force measuring structure; 4. Crossbeam; 5. Lifting structure; 6. Second mechanism. Detailed Implementation

[0035] To make the objectives, technical solutions, and effects of this utility model clearer and more explicit, the present utility model will be further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are only used to explain this utility model and are not intended to limit this utility model.

[0036] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this utility model are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such usage can be interchanged where appropriate. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion. For example, a system, product, or device that comprises a series of units is not necessarily limited to those explicitly listed, but may include other units not explicitly listed or inherent to such products or devices.

[0037] Example: To address the problems existing in the prior art, this utility model proposes a UV adhesive surface drying property testing device. This device is simple to operate, effectively avoids human interference and sample contamination, has good repeatability, and can operate stably under near-actual process conditions. This device has significant engineering application value for improving the quality control level of UV adhesive products and ensuring the reliability of high-end manufacturing processes.

[0038] The testing device proposed in this utility model includes a mechanical execution part (first mechanism) and a data acquisition and processing system (second mechanism 6).

[0039] The first mechanism includes a base 1, a test probe structure 2, a force measuring structure 3, a crossbeam 4, and a lifting structure 5. The base 1 is used to place and fix the gel sample to be tested. The lifting structure 5 is located above the base 1 and connected to the crossbeam 4, used to drive the crossbeam 4 to move in a direction perpendicular to the base 1. The force measuring structure 3 is fixedly installed below the crossbeam 4. The test probe structure 2 is connected below the force measuring structure 3, with a test probe at one end facing the base 1; the other end of the test probe structure 2 has a circular hole, allowing for detachable connection to the force measuring structure 3 via a pin.

[0040] In this embodiment, the tip of the test probe is spherical with a diameter of 20 mm and a length of 120 mm. It is made of silicone with a Shore A hardness of 50. This material possesses good flexibility, elasticity, resistance to high and low temperatures, insulation, and chemical stability, enabling gentle contact with vulnerable surfaces and avoiding scratches or damage to the sample. It is understood that the tip of the test probe can also be conical, disc-shaped, pointed, or cylindrical; the material of the tip can also be synthetic ruby ​​(alumina, Al2O3), plastic, stainless steel, glass, or ceramic, etc.

[0041] To meet testing requirements, the base 1 of the device in this embodiment is made of marble with a surface flatness error of ≤0.01mm, ensuring that the test sample is placed stably.

[0042] In this embodiment, the lifting structure 5 is arranged in a direction perpendicular to the base 1. The lifting structure 5 includes a lifting component and a lifting drive component. The lifting structure 5 has two lifting components, which are respectively arranged vertically and oppositely on both sides of the base 1; the lifting component is a screw. The lifting drive component is an electric cylinder. The crossbeam 4 is provided with two through holes, the inner walls of which are machined with threads that match the screw, so that the lifting component can pass through the through holes and drive the crossbeam 4 to rise and fall smoothly.

[0043] In this embodiment, the force measuring structure 3 is an S-type tension sensor with a range of 0-10N and an accuracy of ±0.1%FS, used to accurately measure the force change during the test.

[0044] The second mechanism 6 (data acquisition and processing system) is electrically connected to the force measuring structure 3, and is used to acquire, store, and display test data in real time, and to analyze and process the data to form quantitative indicators. In this embodiment, the quantitative indicator is "surface adhesion force", the value of which is equal to the maximum peel force.

[0045] The working process of the testing device described in this utility model includes steps S1-S5.

[0046] Step S1, Preparation: Fix the test sample coated with UV adhesive and cured by light onto the base 1.

[0047] Step S2, Contact: Control the lifting structure 5 to drive the test probe structure 2 to descend, so that the spherical test probe at its end contacts the gel sample surface with a constant contact pressure and maintains it for a set time (e.g., 5-10 seconds).

[0048] Step S3, Peeling: Control the lifting structure 5 to move in the opposite direction and pull the test probe structure 2 vertically upward at a constant speed.

[0049] Step S4, Measurement: During the test probe pulling process, the force measuring structure 3 records in real time the maximum pulling force required to separate the spherical tip of the test probe from the adhesive surface.

[0050] Step S5, Calculation: The second mechanism 6 reads and processes the maximum tensile force value, quantifying it as the "surface drying adhesion" of the adhesive sample. The smaller this value, the better the surface drying properties of the adhesive (the less sticky the surface); conversely, the larger the value, the worse the surface drying properties.

[0051] The specific embodiments of this utility model have been described in detail above, but they are only examples, and this utility model is not limited to the specific embodiments described above. For those skilled in the art, any equivalent modifications and substitutions to this utility model are also within the scope of this utility model. Therefore, all equivalent changes and modifications made without departing from the spirit and scope of this utility model should be covered within the scope of this utility model.

Claims

1. A UV adhesive surface drying property testing device, characterized in that, include: First and Second Agencies; The first institution includes: Base; A lifting structure is provided above the base; A crossbeam is connected to the lifting structure and is driven by the lifting structure to move vertically. The force-measuring structure is fixedly installed below the crossbeam; and A test probe structure is connected below the force measuring structure, and one end of the test probe structure facing the base is provided with a test probe for contacting the surface of the gel sample; The second mechanism is electrically connected to the force-measuring structure of the first mechanism, and collects the test data of the force-measuring structure in real time and generates a test report.

2. The UV adhesive surface drying property testing device according to claim 1, characterized in that, The other end of the test probe structure is provided with a circular hole, which is detachably connected to the force measuring structure via a pin.

3. The UV adhesive surface drying property testing device according to claim 1, characterized in that, The shape of the test probe tip includes spherical, conical, disc-shaped, pointed conical, or cylindrical.

4. The UV adhesive surface drying property testing device according to claim 1, characterized in that, The diameter of the test probe tip is 1mm-50mm; the length of the test probe is 5mm-300mm; the material of the test probe tip includes one or a combination of at least two of the following: artificial ruby, silicone, plastic, stainless steel, glass, and ceramic.

5. The UV adhesive surface drying property testing device according to claim 1, characterized in that, The surface flatness error of the base is ≤0.05mm.

6. The UV adhesive surface drying property testing device according to claim 1, characterized in that, The lifting structure includes a lifting drive component and a lifting component that is driveably connected to the lifting drive component.

7. The UV adhesive surface drying property testing device according to claim 6, characterized in that, The lifting component includes one of a screw, a slide rail, and a conveyor belt.

8. The UV adhesive surface drying property testing device according to claim 6, characterized in that, The lifting structure includes one or at least two lifting components; when the lifting structure includes two lifting components, the lifting components are respectively arranged vertically and oppositely on both sides of the base; the lifting drive component includes one of a cylinder and an electric cylinder.

9. The UV adhesive surface drying property testing device according to claim 6, characterized in that, The crossbeam has through holes, and the lifting component passes through the through holes; the number of through holes is the same as the number of lifting components; when the lifting component is a screw, the inner wall of the through hole on the crossbeam is provided with threads that match the screw.

10. The UV adhesive surface drying property testing device according to claim 1, characterized in that, The force measuring structure is an S-type tension sensor with a range of 0-10N and an accuracy of ±0.1%FS.

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