Monitoring tube core for monitoring impact, shake, drop and vibration of article

Abstract

The utility model relates to a monitoring tube core for monitoring impact, shake, drop and vibration of an article, which comprises a transparent outer sleeve made of a material capable of being sealed in a hot melting manner, and the inner surface of the transparent outer sleeve is coated with a color development dispersion layer; the colored agent containing pipe is arranged in the outer sleeve, the length of the colored agent containing pipe is smaller than that of the outer sleeve, and the colored agent containing pipe and the outer sleeve are coaxially arranged; the first end of the colorant containing pipe and the first end of the outer sleeve are sealed in a hot melting mode to form a first sealed end, and the second end of the colorant containing pipe is open. And the second end of the outer sleeve forms a second sealing end through hot melting sealing, so that a sealed dispersion cavity is formed between the outer sleeve and the colorant containing pipe. According to the utility model, the key technical bottlenecks of high false alarm rate, short service life, poor environmental adaptability and the like of the traditional monitoring tube core are overcome through the improvement of the sealing technology.

Description

TECHNICAL FIELD

[0001] The utility model belongs to article impact detection technical field, especially relate to a kind of monitoring article impact, shock, drop and vibration's monitoring die. BACKGROUND

[0002] In the field of article impact, shock, drop and vibration monitoring, monitoring die as core component, its performance directly influences the accuracy and reliability of monitoring.The existing monitoring die structure usually includes transparent outer color tube and colored agent emulsion containing tube inserted in outer color tube, and the monitoring of physical event is realized by the interaction between the color developing coating on the inner surface of outer color tube and colored agent emulsion.

[0003] However, the existing monitoring die has significant defects in assembly and sealing.One kind of product, outer color tube and colored agent emulsion containing tube are respectively adopted one-end blind-end tube body, then fixed by adhesive, and its typical structure is sleeve type vibration monitor disclosed by Chinese patent CN2656978Y, which comprises transparent outer color tube and built-in colored agent emulsion containing tube, and is assembled and sealed by adhesive bonding mode.Another kind, outer color tube and colored agent emulsion containing tube are independently cut, and two ends are respectively sealed by filling adhesive.

[0004] The existing technology has the following defects:

[0005] 1.Insufficient sealing reliability: in the process of transportation and use, adhesive interface may produce microcracks under transportation vibration load due to factors such as vibration, high temperature, acid and alkali corrosion, resulting in colored agent emulsion leakage and false report.

[0006] 2.Poor structural integrity: stress concentration area exists in the interface formed by twice adhesive sealing, and through experiment, peeling failure between adhesive layer and tube body is easy to occur when impact acceleration exceeds 50g;On the other hand, the existing assembly method needs to fill adhesive and sealing operation for many times, which not only increases production steps and cost, but also reduces production efficiency.

[0007] In order to solve the above problems, the utility model provides an article impact state monitoring die which realizes permanent sealing by hot melting mode. CONTENT OF UTILITY MODEL

[0008] In view of the problems existing in the prior art, the utility model provides an article impact state monitoring die which realizes permanent sealing by hot melting mode.

[0009] The utility model discloses a kind of monitoring article impact, shock, drop and vibration monitoring die, it is characterized in that, comprising: transparent outer sleeve, made of heat-sealable material, its inner surface is coated with color development dispersion layer;Coloring agent containing tube, set in the inside of the outer sleeve, the length of the coloring agent containing tube is less than outer sleeve, and both are coaxially arranged;The first end of the coloring agent containing tube and the first end of outer sleeve are formed first sealing end by heat-seal, and the second end of the coloring agent containing tube is open;The second end of the outer sleeve is formed second sealing end by heat-seal, so that sealed dispersion cavity is formed between outer sleeve and coloring agent containing tube.

[0010] Further preferably, the circumferential coverage area of the color development dispersion layer accounts for more than 70% of the inner circumferential surface area.

[0011] Further preferably, the transparent outer sleeve and the coloring agent containing tube are made of the same material, which is a quartz crystal tube.

[0012] Further preferably, the radial gap between the coloring agent containing tube and the outer sleeve is 0.05-0.15 mm.

[0013] Further preferably, the fusion width of the first sealing end and the second sealing end is 1.5-2.5 mm, and the end portion is in an arc-shaped closed structure.

[0014] Further preferably, the length from the open end of the coloring agent containing tube to the tube opening of the second sealing end is 7-11 mm.

[0015] The utility model has the advantages and technical effects: through multi-dimensional structure innovation and parameter coordination optimization, the utility model realizes breakthrough improvement in impact monitoring sensitivity, environmental tolerance and long-term reliability, and the overall technical effect can be systematically summarized as follows:

[0016] I. Heat-seal technology innovation significantly improves sealing performance and environmental adaptability

[0017] The same material heat-seal process is used to replace traditional adhesive, which eliminates interface thermal stress through molecular fusion and significantly reduces the risk of sealing structure leakage, maintains sealing integrity under extreme temperature cycles; avoids the interference of adhesive organic solvent residues on color development reaction, significantly improves color development sensitivity stability, and ensures monitoring data accuracy; sealing width and arc-shaped end portion are cooperatively designed to enhance the structure's resistance to crushing, effectively resist transportation vibration and accidental impact, and reduce the risk of sealing failure.

[0018] II. Color development monitoring system innovation realizes accurate perception and reliable feedback

[0019] Full circumference continuous color development layer combined with optimized thickness design ensures complete liquid diffusion path, significantly shortens color development response time, and effectively captures high threshold impact acceleration; dual buffer design of inter-tube radial gap and open end spacing improves energy absorption efficiency, avoids liquid instantaneous overflow or delayed color development, and significantly reduces false alarm rate;

[0020] The same material quartz transistor design maintains optical transparency and chemical inertness, and the color development area can still be clearly identified after long-term use, avoiding monitoring errors caused by material degradation.

[0021] III. Structural parameter optimization breaks through the limitations of traditional design

[0022] The fusion width and arc-shaped closed structure form a composite reinforced interface, significantly extending the fatigue life of the sealed end, overcoming the defect that traditional right-angle seals are prone to cracking; precise control of the volume of the dispersion cavity improves the clarity of the color development boundary, ensuring that the visual recognition meets the requirements of harsh working conditions; compact design adapts to complex installation space, while maintaining overall bending strength through stress dispersion structure, balancing miniaturization and reliability requirements.

[0023] IV. Production process and long-term stability are synergistically enhanced

[0024] Standardization of hot melt process parameters significantly improves production consistency, reduces process complexity and time cost; the overall structure has excellent environmental tolerance and can work stably in high humidity and corrosive environments for a long time.

[0025] The utility model improves the traditional monitoring tube core false alarm rate, short service life, poor environmental adaptability and other key technical bottlenecks through sealing technology. The innovative design significantly improves the accuracy and reliability of impact event identification, and has wide applicability in logistics transportation, precision instruments, military equipment and other fields, providing an efficient technical solution for the whole process state monitoring of high-value goods. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 is the front view of the utility model;

[0027] Figure 2 is Figure 1 A-A sectional view;

[0028] Figure 3 is the internal structure schematic diagram of the utility model.

[0029] In the figure, 1, transparent outer sleeve; 11, color development dispersion layer; 2, colored agent containing tube; 3, first sealing end; 4, second sealing end; 5, dispersion cavity. DETAILED DESCRIPTION

[0030] In order to make the utility model's purpose, technical scheme and advantage more clearly, the following is combined with example, and the utility model is further explained in detail.It should be understood that the specific embodiments described herein are only used to explain the utility model, and are not used to limit the utility model.

[0031] Please refer to Figures 1 to 3 A monitoring tube core for monitoring impact, shock, drop and vibration of an article, comprising: a transparent outer sleeve 1 made of heat-sealable material, the inner surface of which is coated with a color-developing dispersion layer 11; the color-developing dispersion layer develops color by physical diffusion and mixing with liquid, rather than chemical reaction. The colored agent emulsion (containing large red pigment particles, dispersing agent, antifreeze, etc.) can develop color quickly by direct mixing, meeting the requirement of "fast diffusion"; a colored agent containing tube 2 is arranged inside the outer sleeve 1, the length of the colored agent containing tube 2 is less than that of the outer sleeve 1, and the two are coaxially arranged, which can ensure that the colored agent has enough space to disperse in the dispersion cavity, while ensuring compact structure and facilitating the monitoring tube core to accurately perceive impact, shock and other conditions; the first end of the colored agent containing tube 2 and the first end of the outer sleeve 1 are heat-sealed to form a first sealed end 3, and the second end of the colored agent containing tube 2 is open; the second end of the outer sleeve 1 is heat-sealed to form a second sealed end 4, so that a sealed dispersion cavity 5 is formed between the outer sleeve 1 and the colored agent containing tube 2.

[0032] The heat-sealing technical features of the present application have achieved significant technical improvements in sealing reliability, environmental tolerance and chemical stability compared with the existing adhesive sealing scheme, and the specific analysis is as follows:

[0033] Reduced risk of sealing failure: traditional adhesive sealing is prone to interface stress concentration due to the difference in material thermal expansion coefficient, while heat-sealing forms molecular-level bonding through the fusion of the material itself, significantly improving the interface strength. In wide temperature range cycle test, the leakage rate of heat-sealing structure is greatly reduced compared with adhesive, and the sealing durability is significantly enhanced.

[0034] Elimination of chemical pollution: the residual organic solvent in the adhesive is prone to side reactions with the colored agent, resulting in a decrease in color development sensitivity. Heat-sealing does not require the introduction of exogenous substances, avoiding chemical component pollution and ensuring the stability and accuracy of the color development reaction.

[0035] Enhanced structural stability: the adhesive coating process has problems of uneven thickness and curing time fluctuation, while heat-sealing achieves consistent sealing width through precise temperature and pressure control.

[0036] This structural improvement significantly improves production yield and avoids environmental sensitivity defects in the adhesive curing process. This technology breakthrough solves the inherent interface failure and pollution problems of adhesive sealing, significantly reduces the false alarm rate of the monitoring tube core under extreme working conditions, greatly prolongs the service life of the product, and improves the monitoring reliability.

[0037] Further preferably, the color-developing dispersion layer 11 preferably adopts a nano-coating containing a fluorescent agent, which is a technology known in the art, and the circumferential coverage area accounts for more than 70%, preferably 75%, of the inner circumferential surface area. The color-developing dispersion layer is a continuous and uniform coverage layer, and the thickness is adapted to balance the liquid diffusion rate and the coating adhesion, and the coverage area accounts for the entire visible area of the inner circumference of the transparent outer sleeve. This technical feature improves the technical effect through the following structural design:

[0038] Color-developing sensitivity optimization: The continuous and uniform coverage layer structure ensures the integrity of the colored liquid diffusion path, avoids color-developing blind areas caused by intermittent coating, and ensures that liquid diffusion caused by impact events can be captured without omission.

[0039] Visual recognition enhancement: The full-circumferential coverage design breaks through the limitations of traditional local coating schemes, so that the color-developing area can be quickly identified at any observation angle, especially suitable for narrow spaces or non-direct-viewing installation scenarios.

[0040] Interface stability enhancement: The thickness adaptation design balances the interfacial bonding force of the coating and the substrate (prevents peeling) and the liquid permeability (ensures diffusion speed), solving the problems of insufficient adhesion caused by too thin coating or diffusion delay caused by too thick coating in traditional coating.

[0041] Anti-interference ability improvement: The continuous coverage structure effectively blocks external environmental interference on the color-developing reaction (such as moisture intrusion leading to false triggering), and avoids the risk of micro-crack propagation at the edge of the coating due to stress concentration.

[0042] This feature discards the conventional idea of simple coating, and through the coordinated design of coverage range and thickness, it simultaneously realizes a leap-forward improvement in monitoring sensitivity, reliability and environmental adaptability without introducing complex processes.

[0043] Further preferably, the transparent outer sleeve 1 and the colored agent containing tube 2 are made of the same material, which is a quartz crystal tube. This technical feature realizes the following synergistic effects through material consistency: ① Eliminate thermal stress at the interface of dissimilar materials, improve the integrity of the hot melt seal; ② Avoid the chemical corrosion risk of the tube material and the colored agent, and ensure the color-developing stability; ③ Synchronously resist high temperature and impact environment, so that the monitoring tube core maintains structural strength and optical transparency in extreme working conditions, and overall improves monitoring accuracy and service life.

[0044] Further preferably, the radial gap between the colorant containing tube 2 and the outer sleeve 1 is 0.05-0.15mm, and the preferred value in the embodiment is 0.1mm. This technical feature realizes double optimization through gap adaptability design. On the one hand, it allows the colorant emulsion to diffuse smoothly to the color developing dispersion layer when the impact is greater than N times the gravitational acceleration, and N is a non-zero integer. On the other hand, it maintains a buffer space between the tubes to absorb energy through micro-deformation under impact load and prevent tube rupture and false alarms.

[0045] Further preferably, the fusion width of the first sealing end 3 and the second sealing end 4 is 1.5-2.5mm, and the end is in an arc-shaped closed structure, and the preferred value in the embodiment is 2mm. This technical feature ensures the balance between sealing strength and material cost by limiting the fusion width range. Too narrow fusion width may lead to sealing failure, and too wide fusion width may increase the risk of thermal stress concentration. The arc-shaped closed structure of the end can disperse interface stress, avoid crack initiation at the right-angle bend, and improve the continuity of the fusion surface and the sealing reliability.

[0046] Further preferably, the length of the open end of the colorant containing tube 2 from the tube opening of the second sealing end 4 is 7-11mm, and the preferred value in the embodiment is 9mm. This design provides a buffer distance for the flow of colorant when impact occurs, ensuring that the liquid diffuses to the color developing area in a controlled manner. Too short a distance may cause the liquid to overflow instantaneously and trigger a false alarm, and too long a distance may delay the color developing response. Combined with the stress dispersion characteristics of the arc-shaped sealing end, this design makes the color developing boundary clear and controllable, while maintaining the impact resistance of the tube structure, achieving a dynamic balance between impact energy absorption and color developing sensitivity.

[0047] The working principle of the utility model is: when the colorant containing tube (2) is impacted by an external impact greater than N times the gravitational acceleration, the colorant inside the tube enters the dispersion cavity (5) and contacts the color developing dispersion layer (11), forming an observable color developing area to indicate the impact event.

[0048] Generally, according to the shock resistance and impact resistance requirements of the transported goods, five specifications of 25g, 37g, 50g, 75g and 100g are provided, where g is the gravitational acceleration. For details, please refer to the product specifications in the following table.

[0049]

[0050] The device innovatively designs a five-level monitoring system, providing 25g, 37g, 50g, 75g and 100g standard levels to adapt to different transportation scene requirements. The basic level meets the protection requirements of regular industrial products with 25g and 37g, the high-level configuration can resist higher impact of 50g and 75g, and the extreme protection level selects 100g. This forms a full-scene solution covering ordinary logistics to high-precision medical devices, aerospace equipment and military transportation.

[0051] The above merely describes preferred embodiments of the present application and is not intended to limit the present application, and any modification, equivalent replacement, and improvement within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A monitoring die for monitoring impacts, shocks, drops, and vibrations of an article, the monitoring die comprising: The application relates to a transparent outer sleeve (1) coated with a color developing dispersion layer (11) on the inner surface; a colorant containing tube (2) arranged inside the outer sleeve (1), the length of the colorant containing tube (2) being smaller than that of the outer sleeve (1), and the two being coaxially arranged; a first end of the colorant containing tube (2) and a first end of the outer sleeve (1) are sealed by hot melting to form a first sealed end (3), and a second end of the colorant containing tube (2) is open; a second end of the outer sleeve (1) is sealed by hot melting to form a second sealed end (4), so that a sealed dispersion cavity (5) is formed between the outer sleeve (1) and the colorant containing tube (2). The circumferential coverage area of the color developing dispersion layer (11) accounts for more than 70% of the inner circumferential surface area. The material of the transparent outer sleeve (1) and the colorant containing tube (2) is the same, which is a quartz crystal tube. The radial gap between the colorant containing tube (2) and the outer sleeve (1) is 0.05-0.15 mm. The fusion width of the first sealed end (3) and the second sealed end (4) is 1.5-2.5 mm, and the end part is in an arc-shaped closed structure.

2. The monitoring die of claim 1, wherein: The length of the open end of the colorant containing tube (2) from the tube opening of the second sealed end (4) is 7-11 mm.

3. The monitoring die of claim 1, wherein: ​ 4. The monitoring die of claim 1, wherein: ​ 5. The monitoring die of claim 1, wherein: ​ 6. The monitoring die of claim 1, wherein: ​

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