A can body pinhole detection device

Abstract

The utility model discloses a kind of tank needle hole detection devices, including box, light-reflecting film and light source module;The light-reflecting film is arranged in the inside of the box;The light source module is arranged in the inside of the box;The box is provided with the through-hole for the tank body settlement;The light source module is used to emit light to realize the illumination detection of the tank body at the through-hole;The light-reflecting film is used to reflect the light emitted by the light source module.The utility model passes through checking whether the tank exists pinhole light transmission, to quickly judge whether the tank exists pinhole defect, to avoid unqualified tank to flow into market.

Description

Technical Field

[0001] This utility model belongs to the field of tank defect detection technology, specifically relating to a tank pinhole detection device. Background Technology

[0002] Two-piece aluminum cans are widely used in the food and beverage industries due to their advantages such as light weight, high strength, and good barrier properties. However, during the production process, pinhole defects may appear on the can body and bottom due to factors such as raw material quality and processing technology. Although these pinholes are small, they can seriously affect the can's sealing performance, leading to leakage and spoilage of the contents, and greatly reducing product quality.

[0003] Currently, optical inspection machines are commonly used in aluminum two-piece can production lines to detect and reject perforated cans, which improves inspection efficiency to some extent. However, in actual production, optical inspection machines are limited by their detection principle, environmental interference, and their own parameter settings, resulting in some false rejections and missed rejections. Some qualified aluminum two-piece cans are mistakenly identified as perforated cans and rejected, causing unnecessary waste of raw materials and increased production costs; some cans with pinhole defects go undetected and may enter the market, easily affecting product quality.

[0004] Currently, manual visual inspection is commonly used to check whether rejected cans by optical inspection machines are normal. Specifically, workers stand next to the production line, hold the can in their hands, and use natural light or ordinary indoor lighting to visually inspect the can's body and bottom surface for pinhole defects. To improve the clarity of observation, a handheld magnifying glass of 10x to 20x magnification is used in some scenarios to assist in the inspection. During the inspection, workers need to continuously rotate the can to ensure that no part of the can's side, bottom arc transition area, etc., is missed. Manual sampling inspection is not only inefficient but also greatly affected by human factors, making it difficult to comprehensively and accurately determine whether rejected cans are normal, and it cannot effectively solve the problems caused by optical inspection machines mistakenly rejecting or missing cans.

[0005] Currently, there is an urgent need to develop a device for detecting pinholes in cans to check for pinhole defects and prevent substandard cans from entering the market. Utility Model Content

[0006] To address the aforementioned problems in the prior art, this utility model provides a can pinhole detection device, which can check whether the can has pinhole defects, thereby preventing substandard cans from entering the market.

[0007] The present invention adopts the following technical solution: A device for detecting pinholes in a tank includes a housing, a reflective film, and a light source module. The reflective film is disposed inside the housing. The light source module is disposed inside the housing. The housing has a through hole for placing the tank. The light source module emits light to irradiate and detect the tank at the through hole. The reflective film reflects the light emitted by the light source module.

[0008] Furthermore, the internal walls of the enclosure are covered with the reflective film.

[0009] Furthermore, the reflective film includes nanoscale reflective units, which are uniformly disposed on the surface of the reflective film, and the size range of the nanoscale reflective units is 1 nm to 100 nm.

[0010] Furthermore, the reflectivity of the reflective film is ≥95%.

[0011] Furthermore, the light source module includes a light-emitting unit, which is arranged in a 360° ring on the surface of the light source module.

[0012] Furthermore, the light emitted by the light source module has an illuminance of 2000 lux to 3000 lux.

[0013] Furthermore, the light source module faces the through hole and is disposed inside the housing.

[0014] Furthermore, the housing is provided with a fixing part; the fixing part is provided with mounting holes for fixing the position.

[0015] Furthermore, the diameter of the through hole matches the outer diameter of the tank body to be tested.

[0016] Furthermore, the can body pinhole detection device is used to detect pinholes on the can body, wherein the pinhole diameter is ≥0.05mm.

[0017] Compared with the prior art, the beneficial effects of this utility model are as follows: A device for detecting pinholes in cans involves placing the can into a through-hole during testing. A light source module inside the device illuminates the can, while a reflective film reflects the light emitted by the light source module to create a uniform lighting environment. By shining light onto the can, operators can check for pinholes that allow light to pass through, quickly determining whether the can has pinhole defects and preventing substandard cans from entering the market. Attached Figure Description

[0018] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments: Figure 1This is a front elevation view of "a device for detecting pinholes in a tank" (with simplified schematic diagrams of the light source module and reflective film). Figure 2 This is a schematic diagram of the tank being placed in the through hole (and also shows the side view of "a tank pinhole detection device") (wherein, the light source module and reflective film are simplified schematic diagrams).

[0019] Figure label: 1-Box body; 11-First side panel; 111-Through hole; 12-Second side panel; 13-Top plate; 14-Bottom plate; 15-Fixing part; 151-Mounting hole; 2-Reflective film; 3-Light source module; 4-Tank body; 41-Tank frame; 42-Tank bottom. Detailed Implementation

[0020] The following will provide a clear and complete description of the concept, specific structure, and technical effects of this utility model in conjunction with the embodiments and accompanying drawings, so as to fully understand the purpose, solution, and effects of this utility model. It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The same reference numerals used throughout the drawings indicate the same or similar parts.

[0021] It should be noted that, unless otherwise specified, when a feature is referred to as "fixed" or "connected" to another feature, it can be directly fixed or connected to the other feature, or it can be indirectly fixed or connected to the other feature. Furthermore, the descriptions of "upper," "lower," "left," and "right" used in this utility model are only relative to the relative positional relationships of the various components of this utility model in the accompanying drawings.

[0022] Reference Figures 1 to 2 A device for detecting pinholes in cans includes a housing 1, a reflective film 2, and a light source module 3. The reflective film 2 is disposed inside the housing 1. The light source module 3 is disposed inside the housing 1. The housing 1 has a through hole 111 for accommodating a can 4. The light source module 3 emits light to illuminate and detect the can 4 at the through hole 111. The reflective film 2 reflects the light emitted by the light source module 3. The can 4 has a body 41 and a bottom 42. This invention quickly determines whether a can 4 has pinhole defects by checking for light transmission through pinholes, thus preventing substandard cans from entering the market.

[0023] Reference Figures 1 to 2 In one embodiment, the inner wall of the housing 1 is covered with the reflective film 2 (except for the position where the light source module 3 is placed).

[0024] In one embodiment, the reflective film 2 includes nanoscale reflective units (such as nanoscale metal particles for reflection), the nanoscale reflective units are uniformly disposed on the surface of the reflective film 2, and the size range of the nanoscale reflective units is 1nm to 100nm.

[0025] In one embodiment, the reflective film 2 has a reflectivity of ≥95%; the interior of the box 1 is fully covered with a high reflectivity (≥95%) reflective film 2, which can reflect the light emitted by the light source module 3 at multiple angles, thereby creating a uniform lighting environment inside the box 1, which is beneficial for detecting pinhole defects on the tank 4.

[0026] In one embodiment, the light source module 3 is fastened to the screw holes on the inner wall of the housing 1 by screws, which helps to ensure the stability of the light source module 3. The reflective film 2 is fully affixed to the remaining area of ​​the inner wall of the housing 1 to achieve efficient reflection of light. The light source module 3 can be electrically connected to an external power source.

[0027] In one embodiment, the light source module 3 includes light-emitting units (such as LED beads), which are arranged in a 60° ring on the front surface of the light source module 3 (Note: the surface of the light source module 3 facing the through hole 111 is the front surface). Preferably, the light emitted by the light source module 3 has an illuminance of 2000 lux to 3000 lux; where lux is the unit of illuminance. Preferably, the light source module 3 faces the through hole 111 and is disposed inside the housing 1. The light source module 3 of this invention, combined with the diffuse reflection effect of the reflective film 2, forms superimposed illumination, which can effectively eliminate the blind spots of illumination on the tank body 41 and the tank bottom 42, and can significantly improve the light transmission effect of the irradiated light through the tiny pinholes.

[0028] Reference Figure 1 and Figure 2 In one embodiment, the housing 1 is a square housing; the housing 1 has a first side plate 11 and a second side plate 12; the first side plate 11 and the second side plate 12 are opposite side plates; the first side plate 11 is provided with the through hole 111; inside the housing 1, the light source module 3 is provided on the second side plate 12, and the light source module 3 faces the through hole 111. Preferably, the housing 1 also has a top plate 13 and a bottom plate 14; the light source module 3 can be provided on the top plate 13 and / or the bottom plate 14.

[0029] In one embodiment, the housing 1 is a cubic housing, and at least one panel of the housing is detachable.

[0030] Reference Figure 1 and Figure 2 In one embodiment, the housing 1 is provided with a fixing part 15 (such as a fixing plate); the fixing part 15 is provided with mounting holes 151 for fixing the position.

[0031] Reference Figure 1 and Figure 2 In one embodiment, the diameter of the through hole 111 matches the outer diameter of the tank body 41 of the tank to be tested 4.

[0032] In one embodiment, the can pinhole detection device is used to detect pinholes on the can 4, wherein the pinhole diameter is ≥0.05mm. This invention provides a can pinhole detection device with a 100% accuracy rate in detecting pinholes with a diameter of 0.05mm or larger on the can 4. This invention effectively improves the detection efficiency and accuracy of pinhole defects on the can 4. Using this can pinhole detection device, qualified and unqualified cans can be effectively identified, which helps ensure the quality of can selection.

[0033] Reference Figure 1 and Figure 2 In one embodiment, this utility model discloses a pinhole detection device for cans, which is applied to the detection of pinhole defects in aluminum two-piece cans. During detection, the operator places the aluminum two-piece can into the through hole 111, so that the bottom 42 and part of the can body 41 of the aluminum two-piece can are in the light illumination area inside the housing 1. The light source module 3 is activated, and the light source module 3 emits uniform and high-intensity light, forming an all-round illumination environment with the cooperation of the reflective film 2. When there is a pinhole defect in the can body 4, the light can accurately penetrate the pinhole and form a light spot inside the can body 4. By observing the light spot inside the can body 4 at the through hole 111, the operator can intuitively check the pinhole defects in the bottom 42 and the can body 41, realizing rapid detection of pinhole defects. This utility model's pinhole detection device can effectively improve the inspection efficiency of pinhole defects in cans.

[0034] In one embodiment, the present invention provides a can pinhole detection device, which can inspect rejected cans by optical inspection machine for pinhole defects, effectively solving the technical problems of low accuracy, poor efficiency, blind spots, and high misjudgment rate of manual visual inspection.

[0035] In one embodiment, the can pinhole detection device of this invention can re-screen qualified cans that have been mistakenly rejected by the optical inspection machine, allowing them to return to the normal production process and reduce raw material waste. At the same time, the can pinhole detection device of this invention can also re-confirm unqualified cans that were missed by the optical inspection machine but have been mixed into the rejected cans, in order to identify the quality of the cans.

[0036] Other aspects of the pinhole detection device for tanks described in this utility model are found in the prior art and will not be repeated here.

[0037] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Therefore, any modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the scope of the technical solution of the present utility model.

Claims

1. A device for detecting pinholes in a tank, characterized in that, The device includes a housing, a reflective film, and a light source module. The reflective film is disposed inside the housing. The light source module is disposed inside the housing. The housing has a through hole for placing a tank. The light source module emits light to illuminate and detect the tank at the through hole. The reflective film reflects the light emitted by the light source module.

2. The device for detecting pinholes in a tank according to claim 1, characterized in that, The internal walls of the box are covered with the reflective film.

3. The device for detecting pinholes in a tank according to claim 1, characterized in that, The reflective film contains nanoscale reflective units, which are uniformly disposed on the surface of the reflective film, and the size range of the nanoscale reflective units is 1nm to 100nm.

4. The device for detecting pinholes in a tank according to claim 1, characterized in that, The reflectivity of the reflective film is ≥95%.

5. The device for detecting pinholes in a tank according to claim 1, characterized in that, The light source module includes light-emitting units, which are arranged in a 360° ring on the surface of the light source module.

6. The device for detecting pinholes in a tank according to claim 1, characterized in that, The light emitted by the light source module has an illuminance of 2000 lux to 3000 lux.

7. The device for detecting pinholes in a tank according to claim 1, characterized in that, The light source module faces the through hole and is located inside the housing.

8. The device for detecting pinholes in a tank according to claim 1, characterized in that, The housing is provided with a fixing part; the fixing part is provided with mounting holes for fixing the position.

9. A device for detecting pinholes in a tank according to claim 1, characterized in that, The diameter of the through hole matches the outer diameter of the tank body to be tested.

10. A device for detecting pinholes in a tank according to any one of claims 1 to 9, characterized in that, The tank pinhole detection device is used to detect pinholes on the tank, wherein the pinhole diameter is ≥0.05mm.

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