A shadowless lamp structure for a color sorter

Abstract

This invention discloses a shadowless lamp structure for a color sorter, including a color sorter frame, a conveyor belt, and a shadowless lamp assembly. The shadowless lamp assembly includes a cylindrical lampshade and several lamp tubes installed on the inner wall of the cylindrical lampshade. The conveyor belt is installed on the upper front side of the color sorter frame, and the cylindrical lampshade is installed below the end of the conveyor belt. A color sorting box is installed on the upper rear side of the color sorter frame, and a camera is installed inside the color sorting box, with the camera facing the axis of the cylindrical lampshade of the shadowless lamp assembly. This invention's shadowless lamp structure for a color sorter, by installing the shadowless lamp assembly below the end of the conveyor belt and utilizing a matrix formed by several lamp tubes installed on the inner wall of the cylindrical lampshade within the shadowless lamp assembly, produces images captured by two cameras without shadows, resulting in good visual recognition, excellent color sorting effect, ease of use, and high reliability.

Description

Technical Field

[0001] This invention relates to the field of color sorter technology, specifically to a shadowless lamp structure for a color sorter. Background Technology

[0002] Color sorters are devices that automatically separate discolored particles from granular materials based on differences in their optical properties using photoelectric detection technology. Therefore, optical visual differences are one of the key factors determining the effectiveness of color sorting.

[0003] Currently, in existing color sorters, when materials pass through the visual range of the lighting lamp, shadows are easily created due to the installation position of the lighting lamp, which affects the color sorting effect. Summary of the Invention

[0004] The purpose of this invention is to provide a shadowless lamp structure for a color sorter to solve the above-mentioned defects.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A shadowless lamp structure for a color sorter includes a color sorter frame, a conveyor belt, and a shadowless lamp assembly. The shadowless lamp assembly includes a cylindrical lampshade and several lamp tubes installed on the inner wall of the cylindrical lampshade. The conveyor belt is installed on the upper front side of the color sorter frame, and the cylindrical lampshade is installed below the end of the conveyor belt. A color sorting box is installed on the upper rear side of the color sorter frame, and a camera is installed inside the color sorting box. The camera is installed facing the axis of the cylindrical lampshade of the shadowless lamp assembly.

[0007] Preferably, the camera includes camera one and camera two, and background plate one and background plate two are installed on the inner wall of the cylindrical lampshade. The axis of camera one, the axis of the cylindrical lampshade and background plate one are on a straight line, and the axis of camera two, the axis of the cylindrical lampshade and background plate two are on a straight line.

[0008] Preferably, the lamp tubes are arranged in at least three groups, with two in each group and symmetrically arranged around the axis of the cylindrical lampshade; each group has one lamp tube and the three lamp tubes in the three groups are arranged at intervals with background plate one and background plate two.

[0009] Preferably, a receiving hopper is installed inside the color sorter frame, and the receiving hopper is installed below the rear side of the shadowless lamp assembly.

[0010] Preferably, a material inlet is provided on the outer wall of the cylindrical lampshade located at the end of the conveyor belt, and a material outlet is provided on the outer wall of the cylindrical lampshade located above the receiving hopper.

[0011] Preferably, each of the color sorting boxes facing the first camera and the second camera is provided with a light-transmitting hole and a light-transmitting plate is respectively installed on it. The outer walls of the cylindrical lampshade opposite the first and the second light-transmitting plates are respectively provided with light-transmitting holes 2 and 3 for light to pass through. The axis of the first camera, the first light-transmitting plate, the second light-transmitting hole, the cylindrical lampshade and the background plate 1 are on a straight line. The axis of the second camera, the second light-transmitting plate, the third light-transmitting hole, the cylindrical lampshade and the background plate 2 are on a straight line.

[0012] Preferably, the trajectory of the material thrown out from the end of the conveyor belt intersects with the axis of the cylindrical lampshade.

[0013] Preferably, the lamp tubes include lamp tube one, lamp tube two, lamp tube three, lamp tube four, lamp tube five, and lamp tube six. Lamp tube one and lamp tube two, lamp tube three and lamp tube four, and lamp tube five and lamp tube six are symmetrically arranged and installed on the inner wall of the cylindrical lampshade with respect to the axis of the cylindrical lampshade. Background plate one is disposed between lamp tube two and lamp tube six, and background plate two is disposed between lamp tube two and lamp tube four. Furthermore, lamp tube six, background plate one, lamp tube two, background plate two, and lamp tube four are located on the lower inner wall of the front side of the cylindrical lampshade.

[0014] Preferably, the lamp tube further includes several independently arranged lamp tubes seven, which are symmetrically arranged with respect to the material inlet or material outlet along the axis of the cylindrical lamp cover.

[0015] Preferably, a circular lampshade end plate is installed at both ends of the cylindrical lampshade, and an end fixing plate is installed on the outer end face of the lampshade end plate. The cylindrical lampshade is fixedly installed on the color sorter frame by the two end fixing plates.

[0016] The beneficial effects of this invention are as follows:

[0017] This invention discloses a shadowless lamp structure for a color sorter. By installing a shadowless lamp assembly below the end of the conveyor belt, and using a matrix of several lamp tubes mounted on the inner wall of a cylindrical lampshade in the shadowless lamp assembly, when the material passes through the inside of the cylindrical lampshade, under the action of several lamp tubes and multiple background plates, the images captured by two cameras have no shadows, resulting in good visual recognition, excellent color sorting effect, ease of use, and high reliability. Attached Figure Description

[0018] Figure 1 Right view of the overall structure of the present invention;

[0019] Figure 2 : A top view of the material conveyor belt and shadowless lamp assembly of the present invention;

[0020] Figure 3 : Figure 1 Schematic diagram of the color sorter and shadowless lamp assembly;

[0021] Figure 4 : Figure 1 A schematic diagram of the structure of the shadowless lamp assembly. Detailed Implementation

[0022] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0023] Example 1:

[0024] Reference Figure 1-4 The present invention proposes a shadowless lamp structure for a color sorter, including a color sorter frame 1, a conveyor belt 3 and a shadowless lamp assembly 4, wherein the conveyor belt 3 is installed on the front side of the upper end of the color sorter frame 1.

[0025] The shadowless lamp assembly 4 includes a cylindrical lampshade 41 and several lamp tubes 44 installed on the inner wall of the cylindrical lampshade 41. The cylindrical lampshade 41 is installed below the end of the conveyor belt 3, and a background plate 1 45 and a background plate 2 46 are installed on the inner wall of the cylindrical lampshade 41. There are at least three groups of lamp tubes 44, with two in each group and symmetrically arranged along the axis of the cylindrical lampshade 41; one lamp tube 44 in each group, and a total of three lamp tubes 44 in three groups, are spaced apart from the background plate 1 45 and the background plate 2 46.

[0026] A color sorting box 2 is installed on the rear side of the upper end of the color sorting frame 1. A camera is installed inside the color sorting box 2, and the camera is installed facing the axis R0 of the cylindrical lamp cover 41 of the shadowless lamp assembly 4. The camera includes camera one 21 and camera two 22. The axis of camera one 21, the cylindrical lamp cover 41 and the background plate one 45 are on a straight line S2, and the axis of camera two 22, the cylindrical lamp cover 41 and the background plate two 46 are on a straight line S3.

[0027] The material thrown out by the end of the conveyor belt 3 will fall through the axis R0 of the cylindrical lamp cover 41, and its trajectory is S1. The intersection of the trajectory S1 and the axis R0 is the material reference point R. When the material passes through or near the material reference point R, the material is illuminated by several lamps 4 and reflected or scattered by the background plate 1 45 and the background plate 2 46, and the material is fed back to the camera 1 21 and the camera 2 22. At this time, the material photos taken by the camera 1 21 and the camera 2 22 will have no shadows, which can effectively improve the visual recognition effect of the color sorter.

[0028] Example 2:

[0029] Reference Figure 1-4The present invention proposes a shadowless lamp structure for a color sorter, comprising a color sorter frame 1, a conveyor belt 3, and a shadowless lamp assembly 4. The conveyor belt 3 is installed on the upper front side of the color sorter frame 1, the shadowless lamp assembly 4 is installed below the end of the conveyor belt 3, and a receiving hopper 5 is installed inside the color sorter frame 1, which is installed below the rear side of the shadowless lamp assembly 4.

[0030] The shadowless lamp assembly 4 includes a cylindrical lampshade 41 and several lamp tubes 44 installed on the inner wall of the cylindrical lampshade 41. Circular lampshade end plates 42 are installed at both ends of the cylindrical lampshade 41, and end fixing plates 43 are installed on the outer end face of the lampshade end plates 42. The cylindrical lampshade 41 is fixedly installed on the color sorter frame 1 by the two end fixing plates 43.

[0031] The cylindrical lampshade 41 is installed below the end of the conveyor belt 3. The outer wall of the cylindrical lampshade 41 at the end of the conveyor belt 3, i.e. the upper outer wall of the front side of the cylindrical lampshade 41, is provided with a material inlet for material passage. The outer wall of the cylindrical lampshade 41 above the receiving hopper 5, i.e. the lower outer wall of the rear side of the cylindrical lampshade 41, is provided with a material outlet for material passage.

[0032] A color sorting box 2 is installed on the rear side of the upper end of the color sorting frame 1. A camera is installed inside the color sorting box 2, and the camera is installed facing the axis R0 of the cylindrical lamp cover 41 of the shadowless lamp assembly 4. The camera includes camera one 21 and camera two 22. Background plate one 45 and background plate two 46 are installed on the inner wall of the cylindrical lamp cover 41. Background plate one 45 and background plate two 46 are used to see the material clearly and provide a reference signal. Their reflective characteristics are equivalent to those of qualified products, but differ significantly from those of defective products. The light signal is then converted into an electrical signal by a sensor and transmitted to the electronic control system to drive the spray valve to remove the discolored material.

[0033] Both camera 1 (21) and camera 2 (22) have light-transmitting holes 1 and light-transmitting plates 1 (23 and 24) respectively installed on the color sorting box 2. On the outer wall of the cylindrical lampshade 41 opposite to light-transmitting plates 1 (23) and 2 (24), i.e., on the upper rear side of the outer wall of the cylindrical lampshade 41, light-transmitting holes 2 and 3 are respectively provided for light to pass through. The axis R0 of camera 1 (21), light-transmitting plate 1 (23), light-transmitting hole 2, and cylindrical lampshade 41, and background plate 1 (45) are on a straight line S2. The axis R0 of camera 2 (22), light-transmitting plate 2 (24), light-transmitting hole 3, and cylindrical lampshade 41, and background plate 2 (46) are on a straight line S3.

[0034] At least three sets of lamp tubes 44 are installed inside the cylindrical lampshade 41, with two in each set and symmetrically arranged along the axis of the cylindrical lampshade 41. One lamp tube 44 in each set, and a total of three lamp tubes 44 in three sets, are spaced apart from the background plate 1 45 and background plate 2 46.

[0035] If three sets of lamps 44 are installed inside the cylindrical lampshade 41, specifically, the three sets of lamps 44 include lamp 441, lamp 442, lamp 443, lamp 444, lamp 445, and lamp 446. Lamp 441 and lamp 442, lamp 443 and lamp 444, and lamp 445 and lamp 446 are symmetrically arranged and installed on the inner wall of the cylindrical lampshade 41 with respect to the axis of the cylindrical lampshade 41. Background plate 45 is located between lamp 442 and lamp 446, and background plate 46 is located between lamp 442 and lamp 444. Lamp 446, background plate 45, lamp 442, background plate 46, and lamp 444 are located on the lower front inner wall of the cylindrical lampshade 41. Light-transmitting hole two is located on the outer wall of the cylindrical lampshade 41 between lamp tube one 441 and lamp tube five 445, and light-transmitting hole three is located on the outer wall of the cylindrical lampshade 41 between lamp tube one 441 and lamp tube three 443.

[0036] Similarly, more than three sets of lamp tubes 44 can be installed inside the cylindrical lampshade 41, namely, one, two or more sets can be installed at each of the following locations: lamp tube 1 441 and lamp tube 2 442, lamp tube 3 443 and lamp tube 444, and lamp tube 5 445 and lamp tube 6 446.

[0037] The cylindrical lamp cover 41 is also equipped with several independently set lamp tubes 447. The lamp tubes 447 are set on the inner wall of the cylindrical lamp cover 41 opposite to the material inlet or material outlet. That is, the lamp tubes 447 and the material inlet or material outlet are symmetrically set with respect to the axis of the cylindrical lamp cover 41.

[0038] The trajectory of the material ejected from the end of the conveyor belt 3 intersects with the axis of the cylindrical lamp cover 41. That is, the intersection of the trajectory S1 and the axis R0 of the material ejected from the end of the conveyor belt 3 is the material reference point R. The overlapping angles of several lamps 44 compensate for each other. By adjusting the position of the lamps 44 on the inner wall of the cylindrical lamp cover 41 and the diffuse reflection of the cylindrical lamp cover 41, the goal of clear material observation by the camera without ghosting is achieved. When the material passes the material reference point R or its vicinity, the material is illuminated by several lamps 4 and reflected or scattered by the background plate 1 45 and background plate 2 46, and the image is fed back to the cameras 1 21 and 2 22. At this time, the material photographs taken by the cameras 1 21 and 2 22 will have no shadows, effectively improving the visual recognition effect of the color sorter.

[0039] This invention discloses a shadowless lamp structure for a color sorter. By installing a shadowless lamp assembly 4 below the end of the conveyor belt 3, and using a matrix of several lamp tubes 44 installed on the inner wall of the cylindrical lamp cover 41 in the shadowless lamp assembly 4, when the material passes through the inside of the cylindrical lamp cover 41, under the action of several lamp tubes 44 and multiple background plates, the images captured by two cameras have no shadows, resulting in good visual recognition, excellent color sorting effect, ease of use, and high reliability.

[0040] The invention has been described above by way of example in conjunction with the accompanying drawings. Obviously, the specific implementation of the invention is not limited to the above-described manner. Any non-substantial improvement made by adopting the inventive concept and technical solution of the invention, or the direct application of the inventive concept and technical solution to other situations without modification, is within the protection scope of the invention.

Claims

1. A shadowless lamp structure for a color sorter, comprising a color sorter frame (1), a conveyor belt (3), and a shadowless lamp assembly (4), characterized in that, The shadowless lamp assembly (4) includes a cylindrical lampshade (41) and several lamp tubes (44) installed on the inner wall of the cylindrical lampshade (41). The conveyor belt (3) is installed on the front side of the upper end of the color sorter frame (1). The cylindrical lampshade (41) is installed below the end of the conveyor belt (3). A color sorting box (2) is installed on the rear side of the upper end of the color sorter frame (1). A camera is installed inside the color sorting box (2). The camera is installed facing the axis of the cylindrical lampshade (41) of the shadowless lamp assembly (4). The camera includes camera one (21) and camera two (22). Background plate one (45) and background plate two (46) are installed on the inner wall of the cylindrical lampshade (41). The axis of camera one (21), cylindrical lampshade (41) and background plate one (45) are on a straight line. The axis of camera two (22), cylindrical lampshade (41) and background plate two (46) are on a straight line. The lamp tubes (44) are provided in at least three groups, with two in each group and symmetrically arranged around the axis of the cylindrical lamp cover (41); each group has one lamp tube (44) and the three lamp tubes in the three groups are arranged at intervals with the first background plate (45) and the second background plate (46); a receiving hopper (5) is installed inside the color sorter frame (1), and the receiving hopper (5) is installed below the rear side of the shadowless lamp assembly (4); a material inlet is provided on the outer wall of the cylindrical lamp cover (41) at the end of the conveyor belt (3), and a material outlet is provided on the outer wall of the cylindrical lamp cover (41) above the receiving hopper (5); The lamp tubes (44) include lamp tube one (441), lamp tube two (442), lamp tube three (443), lamp tube four (444), lamp tube five (445), and lamp tube six (446). Lamp tube one (441) and lamp tube two (442), lamp tube three (443) and lamp tube four (444), and lamp tube five (445) and lamp tube six (446) are symmetrically arranged and installed on the inner wall of the cylindrical lampshade (41) with respect to the axis of the cylindrical lampshade (41). The background plate one (45) is set between lamp tube two (442) and lamp tube six (446). Between tube six (446), the background plate two (46) is set between tube two (442) and tube four (444), and tube six (446), background plate one (45), tube two (442), background plate two (46) and tube four (444) are located on the inner wall below the front side of the cylindrical lampshade (41); the lamp (44) also includes several independently set lamp seven (447), and the lamp seven (447) and the material inlet or material outlet are symmetrically set with respect to the axis of the cylindrical lampshade (41).

2. The shadowless lamp structure of a color sorter according to claim 1, characterized in that, The color sorting box (2) directly opposite the camera one (21) and the camera two (22) is provided with a light-transmitting hole one and a light-transmitting plate one (23) and a light-transmitting plate two (24) respectively. The outer wall of the cylindrical lampshade (41) opposite the light-transmitting plate one (23) and the light-transmitting plate two (24) is provided with a light-transmitting hole two and a light-transmitting hole three respectively. The axis of the camera one (21), the light-transmitting plate one (23), the light-transmitting hole two, the cylindrical lampshade (41) and the background plate one (45) are on a straight line. The axis of the camera two (22), the light-transmitting plate two (24), the light-transmitting hole three, the cylindrical lampshade (41) and the background plate two (46) are on a straight line.

3. The shadowless lamp structure of a color sorter according to claim 1, characterized in that, The trajectory of the material thrown out from the end of the conveyor belt (3) intersects with the axis of the cylindrical lampshade (41).

4. The shadowless lamp structure of a color sorter according to claim 1, characterized in that, Both ends of the cylindrical lampshade (41) are equipped with circular lampshade end plates (42), and end fixing plates (43) are installed on the outer end face of the lampshade end plates (42). The cylindrical lampshade (41) is fixedly installed on the color sorter frame (1) by the two end fixing plates (43).

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