Regional uniform light source device for invisible code spraying of special-shaped cigarette packets

Abstract

The utility model discloses a regional uniform light source device for invisible code spraying of a special-shaped cigarette packet, which comprises a shell internally provided with a cavity, the front side of the cavity of the shell is sealed through a light-transmitting plate, a light source plate is arranged in the cavity of the shell, the rear side of the light source plate is arranged on the rear side wall of the cavity of the shell through a heat dissipation structure, and a plurality of rows of light sources are arranged on the front side of the light source plate. Each row of light sources comprises a plurality of light sources arranged at intervals in the left-right direction, a light uniformizing assembly is further arranged in the cavity of the shell and comprises a plurality of light uniformizing strips located in front of the light source plate, the light uniformizing strips are arranged in multiple rows in the vertical direction, and the light uniformizing strips correspond to the light sources in one-to-one mode. Compared with the prior art, the utility model has the following advantages: the light source with uniform intensity is provided for the detection system, and the identification speed and accuracy of the detection system are ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of cigarette package detection devices, and more specifically to a regional uniform light source device for invisible coding of special-shaped cigarette packages. Background Art

[0002] Invisible inkjet coding on cigarette packages plays a vital role in the tobacco industry, identifying information such as product batch and production date. Because the coding content must remain relatively concealed, the requirements for detection technology are extremely high. During the inspection process, the light source, a key component in capturing the coding image, ensures that its intensity uniformity is crucial for accurate identification of the coded information.

[0003] When using the inspection system's camera to capture images of invisible inkjet codes, cigarette packs move at high speed on the production line, requiring the system to capture and identify the invisible codes in a very short time. Currently, this typically involves direct light illumination of the cigarette packs. This uneven light intensity leads to unstable image quality, thus affecting the system's recognition speed and accuracy.

[0004] With the continuous development of the tobacco industry, the requirements for product quality and traceability are becoming increasingly stringent. As a key means of product identification, the accuracy and reliability of invisible inkjet coding detection technology are directly related to product quality control and traceability. Uneven light source intensity can affect the detection system's recognition speed and accuracy, thereby compromising subsequent product quality control and traceability. Utility Model Content

[0005] The purpose of the utility model is to overcome the shortcomings of the existing technology and provide a regional uniform light source device for invisible coding of special-shaped cigarette packages, so as to provide a light source with uniform intensity for the detection system, thereby ensuring the recognition speed and accuracy of the detection system.

[0006] The utility model is realized through the following technical solutions:

[0007] A regional uniform light source device for invisible coding of special-shaped cigarette packages includes a shell with a cavity therein, the front side of the cavity of the shell is sealed by a light-transmitting plate, a light source board is provided in the cavity of the shell, the rear side of the light source board is mounted on the rear side wall of the cavity of the shell through a heat dissipation structure, multiple rows of light sources are provided on the front side of the light source board, each row of light sources includes multiple light sources arranged at intervals in the left and right directions, and a uniform light component is also provided in the cavity of the shell, the uniform light component includes multiple uniform light strips located in front of the light source board, the multiple uniform light strips are arranged in multiple rows in the vertical direction, and the multiple rows of uniform light strips correspond one-to-one to the multiple rows of light sources.

[0008] As a preferred solution of the above-mentioned regional uniform light source device, the left and right ends of the light uniforming strip are respectively fixed on the left and right side walls of the inner cavity of the shell, and the light uniforming strip can completely cover all light sources in the corresponding row in the left and right directions.

[0009] As a preferred solution of the above-mentioned regional uniform light source device, the cross section of the light uniforming strip is semicircular, and the surface of the light uniforming strip facing the light source board is an arc surface.

[0010] As a preferred solution of the above-mentioned regional uniform light source device, the heat dissipation structure is a heat dissipation block, the rear side of the heat dissipation block is fixedly connected to the rear side wall of the cavity of the shell by screw connection, and the front side of the heat dissipation block is bonded to the light source board.

[0011] Compared with the prior art, the present invention has the following advantages:

[0012] The utility model provides a regional uniform light source device for invisible coding on special-shaped cigarette packages. The device has multiple rows of uniform light strips in the inner cavity of the housing. The multiple rows of uniform light strips correspond one-to-one to the multiple rows of light sources. The light emitted by the multiple rows of light sources is diffusely reflected by the multiple rows of uniform light strips, thereby achieving a uniform light source intensity and avoiding the problem of uneven light source intensity caused by direct light source illumination. The light is then emitted through a light-transmitting plate and illuminates the invisible coding area on the surface of the cigarette package in the channel. After the auxiliary detection system obtains a high-quality image, it uses detection software to perform invisible coding detection on the cigarette package, thereby improving the accuracy of the detection results. In addition, the device has a simple structure and is easy to install, which can ensure the stability of cigarette package detection quality during the production process. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural diagram of the present utility model.

[0014] Numbers in the figure: 1 housing; 2 heat sink; 3 light source board; 4 light source; 5 uniform light strip; 6 light-transmitting board. DETAILED DESCRIPTION

[0015] The following is a detailed description of an embodiment of the present invention. This embodiment is implemented based on the technical solution of the present invention, and provides a detailed implementation method and specific operation process. However, the protection scope of the present invention is not limited to the following embodiment.

[0016] See also Figure 1 This embodiment discloses a regional uniform light source device for invisible coding of special-shaped cigarette packages, including a shell 1 with a cavity therein. The front side of the cavity of the shell 1 is sealed by a light-transmitting plate 6, and the light-transmitting plate 6 is fixed to the shell 1 by bonding. A light source board 3 is provided in the cavity of the shell 1, and the rear side of the light source board 3 is mounted on the rear side wall of the cavity of the shell 1 through a heat dissipation structure. The heat dissipation structure is an aluminum heat dissipation block 2. The rear side of the heat dissipation block 2 is fixedly connected to the rear side wall of the cavity of the shell 1 by screws, and the front side of the heat dissipation block 2 is bonded to the light source board 3.

[0017] Multiple rows of light sources 4 are provided on the front side of the light source panel 3. Each row of light sources 4 includes multiple light sources 4 spaced apart in the left-right direction. Light sources 4 can be lamp beads. A light homogenization assembly is also provided in the cavity of the housing 1. This assembly includes multiple light homogenization strips 5 located in front of the light source panel 3. These strips 5 are arranged in multiple rows vertically, and the multiple rows of light homogenization strips 5 correspond one-to-one to the multiple rows of light sources 4. The left and right ends of the light homogenization strips 5 are respectively fixed to the left and right side walls of the inner cavity of the housing 1. The light homogenization strips 5 can completely cover all light sources 4 in the corresponding row in the left-right direction. The light homogenization strips 5 have a semicircular cross-section, and the side of the light homogenization strips 5 facing the light source panel 3 is an arc surface.

[0018] When in use, the shell 1 of the device is installed on the equipment bracket of the cigarette package invisible coding detection area. The light emitted by the multiple rows of light sources 4 is diffusely reflected under the obstruction of the multiple rows of uniform light strips 5, which has the effect of uniforming the intensity of the light source 4. The light is then emitted through the light-transmitting plate 6 to illuminate the invisible coding area on the surface of the cigarette package in the channel, so that the intensity of the light source 4 in the detection area is uniform and consistent. After the auxiliary detection system obtains high-quality images, it uses the detection software to perform invisible coding detection on the cigarette package, thereby improving the accuracy of the detection results.

[0019] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A regional uniform light source device for invisible inkjet coding of special-shaped cigarette packages, characterized by: The utility model comprises a shell with a cavity therein, the front side of the cavity of the shell is sealed by a light-transmitting plate, a light source board is provided in the cavity of the shell, the rear side of the light source board is mounted on the rear wall of the cavity of the shell through a heat dissipation structure, multiple rows of light sources are provided on the front side of the light source board, each row of light sources comprises multiple light sources arranged at intervals along the left and right directions, a uniform light component is also provided in the cavity of the shell, the uniform light component comprises multiple uniform light strips located in front of the light source board, the multiple uniform light strips are arranged in multiple rows in the vertical direction, and the multiple rows of uniform light strips correspond one-to-one to the multiple rows of light sources.

2. The regional uniform light source device for invisible inkjet coding of special-shaped cigarette packages according to claim 1, characterized in that: The left and right ends of the light uniforming strip are respectively fixed on the left and right side walls of the inner cavity of the shell, and the light uniforming strip can completely cover all light sources of the corresponding row in the left and right directions.

3. The regional uniform light source device for invisible inkjet coding of special-shaped cigarette packages according to claim 1, characterized in that: The cross section of the light uniforming strip is semicircular, and the surface of the light uniforming strip facing the light source board is an arc surface.

4. The regional uniform light source device for invisible inkjet coding of special-shaped cigarette packages according to claim 1, characterized in that: The heat dissipation structure is a heat dissipation block, the rear side of the heat dissipation block is fixedly connected to the rear side wall of the cavity of the shell by screw connection, and the front side of the heat dissipation block is bonded to the light source board.

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