Bar code scanning device

Abstract

A bar code scanning device comprises a shell, a first modular set and a second modular set. The shell is provided with a detection window for arranging a bar code. The first modular assembly is arranged in the shell and comprises a first light emitting source, a second light emitting source and a first positioning assembly frame for positioning the relative positions of the first light emitting source and the second light emitting source. The second modular assembly is arranged in the shell and comprises a reflective optical element, an imaging unit and a second positioning assembly frame for positioning the relative positions of the reflective optical element and the imaging unit. Wherein the relative positions of the first light emitting source, the second light emitting source, the reflection optical element and the imaging unit with the detection window are achieved by positioning the first positioning assembly frame and the second positioning assembly frame in the shell.

Description

Technical Field

[0001] This case is about a barcode scanning device, especially a barcode scanning device that can be assembled quickly and correctly. Background Art

[0002] Barcode scanning devices are often used during the processing of biological samples. They are used to read barcodes set on collection tubes, and particularly advantageously, can simultaneously read barcodes at the bottoms of multiple collection tubes set on a collection tube rack, which helps to quickly and massively input sample information.

[0003] Generally speaking, a barcode scanning device has a detection window for placing a collection tube rack containing collection tubes, and uses the method of light imaging to obtain an image of the barcode at the bottom of the collection tube, and then inputs sample information by identifying the barcode.

[0004] In order to obtain a clear barcode image, the configuration of optical elements and the optical path design inside the barcode scanning device are important keys, and how to quickly and correctly complete the positioning and assembly of optical elements is an important part of the manufacturing process.

[0005] Therefore, it is necessary to develop a barcode scanning device that can meet the above requirements. Summary of the Invention

[0006] The purpose of this case is to provide a barcode scanning device that can effectively improve the assembly efficiency and assembly accuracy.

[0007] Another purpose of this case is to provide a barcode scanning device that achieves a unified assembly process and reduces the influence of manual operation by modularizing the core scanning elements inside the device.

[0008] To achieve the above purposes, this case provides a barcode scanning device including a housing, a first modular assembly, and a second modular assembly. The housing has a detection window for setting barcodes. The first modular assembly is arranged inside the housing and includes at least one first light source for emitting light to irradiate the barcode, at least one second light source for emitting light to irradiate the barcode, and a first positioning and assembly frame for setting and positioning the relative positions of at least one first light source and at least one second light source. The second modular assembly is arranged inside the housing and includes at least one reflection optical element for reflecting light from the barcode, at least one imaging unit for receiving the barcode image reflected from at least one reflection optical element, and a second positioning and assembly frame for setting and positioning the relative positions of at least one reflection optical element and at least one imaging unit. The relative positions of at least one first light source, at least one second light source, at least one reflection optical element, and at least one imaging unit with respect to the detection window are achieved by positioning the first positioning and assembly frame and the second positioning and assembly frame inside the housing.

[0009] In one embodiment, the detection window is provided on the top plate of the housing, and the detection window, the first positioning and assembly frame, and the second positioning and assembly frame are arranged in sequence from top to bottom, and the first positioning and assembly frame and the second positioning and assembly frame are combined with each other and positioned inside the housing.

[0010] In one embodiment, the first positioning and assembly frame includes at least one first setting portion and at least one second setting portion for respectively setting at least one first light source and at least one second light source.

[0011] In one embodiment, the first positioning and assembly frame includes a plurality of adjustment portions provided on at least one first setting portion and / or at least one second setting portion to adjust the positions of at least one first light source and / or at least one second light source.

[0012] In one embodiment, the plurality of adjustment portions include at least one slot, and at least one first light source and / or at least one second light source can move along the long axis direction of at least one slot.

[0013] In one embodiment, the second positioning and assembly frame includes at least one third setting portion and at least one fourth setting portion for respectively setting at least one reflection optical element and at least one imaging unit.

[0014] In one embodiment, the second positioning and assembly frame includes a plurality of positioning members provided on at least one third setting portion to position at least one reflection optical element.

[0015] In one embodiment, it further includes at least one mounting plate for setting at least one imaging unit, and a plurality of support members, a plurality of tension members, and a plurality of elastic members for setting at least one mounting plate on at least one fourth setting portion of the second positioning and assembly frame, and for adjusting the relative position between the mounting plate and at least one fourth setting portion, thereby adjusting the pitch angle and / or focal length of at least one imaging unit.

[0016] In one embodiment, it further includes a light-shielding adapter plate provided above the detection window to define the range for setting the barcode on the detection window.

[0017] In one embodiment, the top plate of the housing for setting the detection window has a first set of opposite sides and a second set of opposite sides, and the length of the first set of opposite sides is greater than the length of the second set of opposite sides.

[0018] In one embodiment, at least one of the first light sources includes two first LED arrays respectively corresponding to the first set of opposite sides, and the light-emitting surfaces of each of the two first LED arrays face the detection window and form a 90-degree angle with the plane of the detection window.

[0019] In one embodiment, at least one second light source includes two second LED arrays, which are respectively arranged corresponding to the second set of opposite sides, and the light-emitting surfaces of each of the two second LED arrays face the detection window and form a 45-degree angle with the plane of the detection window.

[0020] In one embodiment, the light-emitting angles of at least one first light source and at least one second light source are 120 degrees.

[0021] In one embodiment, at least one reflection optical element includes two reflectors, which are adjacently arranged along the length direction of the first set of opposite sides below the detection window, and the two reflecting surfaces of the two reflectors respectively face the adjacent ones in the second set of opposite sides and form an acute angle with the detection window, and at least one imaging unit includes two cameras, which are respectively arranged between each of the two reflectors and the adjacent ones in the second set of opposite sides and face the reflecting surfaces of the two reflectors.

[0022] In one embodiment, the cross-section of the second positioning and assembling frame along the arrangement direction of at least one reflection optical element and at least one imaging unit has a shape similar to a W shape. Description of the Drawings

[0023] Figure 1A Schematic diagram showing the barcode scanning device according to the embodiment of the present case;

[0024] Figure 1B Schematic diagram showing the collection tube and the collection tube rack arranged on the barcode scanning device according to the embodiment of the present case;

[0025] Figures 2A-2B Schematic diagram showing the barcode scanning device according to the embodiment of the present case with different light-shielding adapter plates;

[0026] Figure 3 Exploded schematic diagram showing the barcode scanning device according to the embodiment of the present case;

[0027] Figure 4 Schematic diagram showing the first modular assembly and the second modular assembly of the barcode scanning device according to the present case;

[0028] Figure 5A Perspective view showing the second set of opposite sides of the barcode scanning device according to the present case;

[0029] Figure 5B Perspective view showing the first set of opposite sides of the barcode scanning device according to the present case;

[0030] Figure 6 Top view showing the first modular assembly according to the embodiment of the present case;

[0031] Figure 7 Top view showing the second modular assembly according to the embodiment of the present case;

[0032] Figure 8Shows an enlarged schematic view of the fourth setting part of the second positioning and assembling framework of the embodiment of the present case and the imaging unit;

[0033] Figure 9 Shows a schematic view of the control module of the barcode scanning device according to the embodiment of the present case.

[0034]

Symbol Explanation

[0035] 10: Barcode scanning device 11: Housing

[0036] 111: Detection window 112: Top plate

[0037] 1121a, 1121b: First set of opposite sides 1122a, 1122b: Second set of opposite sides

[0038] 114a, 114b: Light-shielding adapter plate 12: First modular assembly

[0039] 121: First positioning and assembling framework 1211: First joint part

[0040] 1212a, 1212b: First setting part 1213a, 1213b: Second setting part

[0041] 1214: Adjustment part 122: First light source

[0042] 123: Second light source 13: Second modular assembly

[0043] 131: Second positioning and assembling framework 1311: Second joint part

[0044] 1312: Fixing part 1313a, 1313b: Third setting part

[0045] 1314a, 1314b: Fourth setting part 1315: Positioning part

[0046] 132: Reflective optical element 133: Imaging unit

[0047] 1331: Mounting plate 1332: Support part

[0048] 1333: Tensioning part 1334: Elastic part

[0049] 14: Control module 15: Joint part

[0050] 16: Fixing part 20, 20a, 20b: Sampling and inspection tube rack

[0051] 21: Sampling and inspection tube θ1, θ2: Included angle Detailed implementation method

[0052] Some exemplary embodiments embodying the features and advantages of the present case will be described in detail in the following description. It should be understood that the present invention can have various variations in different aspects, yet all of them do not depart from the scope of the present invention, and the descriptions and illustrations therein are for illustrative purposes in nature and not for limiting the present invention.

[0053] Please refer to Figure 1A and Figure 1B . Figure 1A A schematic diagram showing the barcode scanning device according to an embodiment of the present case, and Figure 1B A schematic diagram showing the collection and inspection tube and the collection and inspection tube rack disposed on the barcode scanning device according to an embodiment of the present case. The barcode scanning device 10 has a housing 11, and a detection window 111 is provided on the top plate 112 of the housing 11. The detection window 111 is used to place the collection and inspection tube rack 20, and a plurality of collection and inspection tubes 21 are accommodated in the collection and inspection tube rack 20, and a barcode (not shown) is provided at the bottom of each collection and inspection tube 21. The barcode scanning device 10 reads the barcodes of the plurality of collection and inspection tubes 21 placed thereon through the detection window 111. Except for the detection window 111 being a light-transmitting area, the other parts of the housing 11 are designed to be light-impermeable to prevent external light and internal reflected light from affecting barcode reading.

[0054] In this embodiment, the housing 11 is a rectangular cube, and the top plate 112 for setting the detection window 111 has a first set of opposite sides 1121a, 1121b and a second set of opposite sides 1122a, 1122b, and the length of the first set of opposite sides 1121a, 1121b is greater than the length of the second set of opposite sides 1122a, 1122b. However, it is not limited thereto, and the shape of the housing 11 can be changed according to actual needs.

[0055] The detection window 111 is an area on the top of the barcode scanning device 10 that can provide uniform illumination to correctly read barcodes. Therefore, the shape of the detection window 111 has no specific limitation. For example, it can be rectangular, square or other shapes, and can also be implemented to match the shape of the collection and inspection tube rack 20. Further, in order to increase the applicable range of the barcode scanning device 10, a light-shielding adapter plate can also be used in combination. For example, as Figures 2A-2B shown, the barcode scanning device 10 can be paired with different light-shielding adapter plates 114a or 114b to change the exposed area of the detection window 111 to adapt to different sizes of collection and inspection tube racks 20a or 20b. In other words, by simply replacing the light-shielding adapter plate, a single barcode scanning device can meet the setting requirements of various sizes of collection and inspection tube racks, effectively increasing the applicable range. Here, the light-shielding adapter plates 114a, 114b and the housing 11 are also designed to be light-impermeable to effectively define the illumination area for reading barcodes and avoid external light and internal reflected light from affecting barcode reading.

[0056] Next, please refer to Figure 3 ,Figure 4 , Figures 5A-5B , Figure 6 and Figure 7 . Figure 3 Shows an exploded view of the barcode scanning device of the embodiment of the present case. Figure 4 Shows a schematic diagram of the first modular assembly and the second modular assembly of the barcode scanning device of the present case. Figure 5A Shows a perspective view of the second set of opposite sides of the barcode scanning device of the present case. Figure 5B Shows a perspective view of the first set of opposite sides of the barcode scanning device of the present case. Figure 6 Shows a top view of the first modular assembly of the embodiment of the present case. Figure 7 Shows a top view of the second modular assembly of the embodiment of the present case. The barcode scanning device 10 includes a housing 11, a first modular assembly 12, a second modular assembly 13, and a control module 14. The first modular assembly 12 includes a first positioning and assembling frame 121, a first light source 122, and a second light source 123. The second modular assembly 13 includes a second positioning and assembling frame 131, a reflective optical element 132, and an imaging unit 133. In other words, in the present case, the scanning core elements of the barcode scanning device 10 are planned into two modular parts, one is the first modular assembly 12 that provides the lighting function, and the other is the second modular assembly 13 that provides the imaging function.

[0057] The first modular assembly 12 and the second modular assembly 13 are mutually combined up and down with each other, and are disposed inside the housing 11, and the detection window 111, the first modular assembly 12, and the second modular assembly 13 are arranged in the order from top to bottom. The control module 14 is located below the second modular assembly 13. Wherein the first positioning and assembling frame 121 includes a first engaging portion 1211 and the second positioning and assembling frame 131 includes a second engaging portion 1311, and the two are combined together by a coupling member 15 passing through the first engaging portion 1211 and the second engaging portion 1311. For example, the first positioning and assembling frame 121 and the second positioning and assembling frame 131 can be respectively implemented as metal frames, and the first engaging portion 1211 and the second engaging portion 1311 are respectively implemented as engaging holes for a coupling member 15 implemented as a screw to pass through the two for combination. In addition, the second positioning and assembling frame 131 also includes a fixing portion 1312 to be fixed to the housing 11 by a fixing member 16, thereby positioning the first modular assembly 12 and the second modular assembly 13 in the housing 11, and also positioning the relative positions between the first modular assembly 12 and the second modular assembly 13 and the detection window 111.

[0058] The first positioning and assembling frame 121 includes first setting portions 1212a, 1212b and second setting portions 1213a, 1213b. The first setting portions 1212a, 1212b are used to set the first light source 122, and the second setting portions 1213a, 1213b are used to set the second light source 123, so as to define the positions of the first light source 122 and the second light source 123 in the housing 11, the relative positions with respect to the detection window 111, and the relative positions between the two. When the first positioning and assembling frame 121 is disposed in the housing 11, the first setting portions 1212a, 1212b are located corresponding to the first set of opposite sides 1121a, 1121b, and are approximately respectively located at the central positions of the first set of opposite sides 1121a, 1121b; and when the first positioning and assembling frame 121 is disposed in the housing 11, the second setting portions 1213a, 1213b are located corresponding to the second set of opposite sides 1122a, 1122b of the housing 11, and are approximately parallel to the second set of opposite sides 1122a, 1122b.

[0059] In an embodiment, the first light source 122 includes two first LED arrays, for example, LED arrays in a long strip shape and composed of 2 LEDs, which are respectively disposed on the opposite first setting portions 1212a, 1212b, and the light emitting surfaces of the two first LED arrays face the detection window 111 and form an angle θ1 with the detection window 111. In a preferred embodiment, the angle θ1 is 90 degrees, that is, the light emitting surfaces of the two first LED arrays are parallel and opposite to each other. The second light source 123 includes two second LED arrays, for example, LED arrays in a long strip shape and composed of 4 LEDs, which are respectively disposed on the opposite second setting portions 1213a, 1213b, and the light emitting surfaces of the two second LED arrays face the detection window 111 and form an angle θ2 with the detection window. In a preferred embodiment, the angle θ2 is 45 degrees, that is, the light emitting surfaces of the two second LED arrays form a 90-degree angle with each other. The light emitting angles of the first light source 122 and the second light source 123 are both 120 degrees. In this configuration, the cross section of the first positioning and assembling frame 121 along the first set of opposite sides 1121a, 1121b is approximately in the shape of a rectangle at the upper part and an inverted trapezoid at the lower part.

[0060] In a preferred embodiment, the first setting portions 1212a, 1212b are further provided with an adjustment portion 1214 to finely adjust the setting position of the first light source 122. For example, the adjustment portion 1214 can be implemented as a slot hole, and the long axis direction of the slot hole is perpendicular to the light emitting surface of the first light source 122, that is, perpendicular to the first set of opposite sides 1121a, 1121b of the housing 11. Accordingly, the first light source 122 fixed to the first setting portions 1212a, 1212b can move a small distance along the slot hole to finely adjust the distance between the two first light sources 122, and further adjust the illumination uniformity of the detection window. In addition, similar adjustment portions (not shown) can also be provided on the second setting portions 1213a, 1213b. Due to the similar structure, they will not be elaborated here.

[0061] As can be seen from the above, the first setting portions 1212a, 1212b and the second setting portions 1213a, 1213b of the first positioning and assembling frame 121 not only define the positions of the first light source 122 and the second light source 123 relative to the detection window 111, but also define the angles of their respective light emitting surfaces relative to the detection window 111. Therefore, by simply designing the structure of the first positioning and assembling frame 121 to standardize the required first setting portions 1212a, 1212b and the second setting portions 1213a, 1213b, the positioning of the first light source 122 and the second light source 123 can be completed quickly and accurately. This is extremely helpful for the unity and accuracy of assembly, the simplification and quick completion of assembly, and the quick adjustment after assembly is completed, saving a large amount of assembly time and greatly improving the assembly rate and correctness.

[0062] More specifically, in this case, the first positioning and assembling frame 121 is used to quickly and accurately position the relative positions between the planned light sources and the positions of the light sources within the housing, that is, by providing a modular assembly method to replace the general scattered assembly operations. Therefore, the structure of the first positioning and assembling frame 121 can vary according to the number of light sources required in actual implementation and the light source configuration method to achieve uniform illumination of the detection window. For example, it can change with factors such as the length of the first set of opposite sides of the housing and the type of light source, and is not limited to the above and those shown in the drawings.

[0063] The second positioning and assembling frame 131 includes third setting portions 1313a, 1313b and fourth setting portions 1314a, 1314b. The third setting portions 1313a, 1313b are used to set the reflective optical element 132, and the fourth setting portions 1314a, 1314b are used to set the imaging unit 133, so as to define the positions of the reflective optical element 132 and the imaging unit 133 within the housing 11. When the third setting portions 1313a, 1313b are located within the housing 11 where the second positioning and assembling frame 131 is disposed, they are at positions directly below the detection window 111, and when the fourth setting portions 1314a, 1314b are located within the housing 11 where the second positioning and assembling frame 131 is disposed, they are at positions corresponding to the second set of opposite sides 1122a, 1122b, that is, substantially parallel and located inside the second set of opposite sides 1122a, 1122b.

[0064] In one embodiment, the reflective optical element 132 includes two reflecting mirrors, which are disposed adjacent to each other along the length direction of the first set of opposite sides 1121a, 1121b below the detection window 111, and their respective reflecting surfaces face the second set of opposite sides 1122a, 1122b adjacent to them and form an acute angle with the detection window 111. That is, as Figure 5B shown, the left reflective optical element 132 in the figure faces the upper left, and the right reflective optical element in the figure faces the upper right. The imaging unit 133 includes two cameras, which are respectively disposed between each reflecting mirror and the second set of opposite sides 1122a, 1122b adjacent to it, face the reflecting surfaces of the two reflecting mirrors, and are on the light reflection paths of the two reflecting mirrors. That is, as Figure 5B shown, the two imaging units 133 are disposed on the two outer sides of the adjacent two reflective optical elements 132 and face the two reflecting mirrors. Thereby, the light from the bar code on the detection window 111 is reflected downward by the two reflecting mirrors and then enters the two cameras respectively to complete the image reading of the bar code. In this embodiment, the two reflecting mirrors and the two cameras are arranged symmetrically on both sides within the housing 11, which can effectively reduce the height of the bar code scanning device. In addition, by adopting a dual-camera configuration, an imaging range of 211mm x 102mm (+100% area) can be achieved, and the dual-camera imaging also helps to suppress image distortion. In a preferred embodiment, the resolution of the two cameras is implemented as 3040x4030 (about 12 million pixels) to provide a high-precision scanning ability to distinguish small bar codes, and the decoding time is about 2 to 3 seconds. In this configuration, the cross-section of the second positioning and assembling frame 131 along the first set of opposite sides 1121a, 1121b, that is, the cross-section along the arrangement direction of the reflective optical element 132 and the imaging unit 133, has a W-shaped shape.

[0065] In a preferred embodiment, the third setting parts 1313a, 1313b further include a plurality of positioning members 1315 to position the reflection optical element 132 disposed thereon, further simplifying the assembly operation of the reflection optical element.

[0066] As can be seen from the above, the third setting parts 1313a, 1313b and the fourth setting parts 1314a, 1314b of the second positioning and assembling frame 131 not only define the position of the reflection optical element 132 relative to the detection window 111 and the light reflection path, but also define the setting position of the imaging unit 133 and the angle at which it receives the reflected light. Therefore, by simply designing the structure of the second positioning and assembling frame 131 to standardize the required third setting parts 1313a, 1313b and fourth setting parts 1314a, 1314b, the positioning of the reflection optical element 132 and the imaging unit 133 can be quickly and accurately completed. This is extremely helpful for the unity and accuracy of assembly, the simplification and quick completion of assembly, and the quick adjustment after assembly is completed, saving a large amount of assembly time and greatly improving the assembly rate and correctness.

[0067] More specifically, in this case, by adopting the second positioning and assembling frame 131, the relative positions between the planned reflection optical element and the detection window and between the reflection optical element and the imaging unit are quickly and accurately positioned, that is, by providing a modular assembly method to replace the general scattered assembly operations. Therefore, the structure of the second positioning and assembling frame 131 can vary according to the number of reflection optical elements, angles, and the number of the cooperating imaging units 133 set in actual implementation, and is not limited to the above and shown in the drawings.

[0068] In summary, in this case, the scanning core components of the barcode scanning device 10 are divided into a first modular set 12 and a second modular set 13, and the structures of the first positioning and assembling frame 121 and the second positioning and assembling frame 131 are designed in cooperation to define the angles and positions of the set components. Therefore, by simply placing each component on the corresponding setting parts of the first positioning and assembling frame 121 and the second positioning and assembling frame 131, the assembly of the first modular set 12 and the second modular set 13 can be quickly completed respectively. Then, by combining the first positioning and assembling frame 121 and the second positioning and assembling frame 131 with each other and positioning them in the housing 11, the relative position positioning and assembly between all components and the detection window 111 can be completed. Therefore, while saving assembly time, the assembly unity, accuracy and efficiency are also greatly improved, highly ensuring the correctness of the relative positions between components and minimizing the influence of human operation.

[0069] This case further provides a mechanism design that can quickly and effectively adjust the angle and focal length of the imaging unit. Please refer to Figure 8, which shows an enlarged schematic view of the fourth setting part of the second positioning and assembling frame of the embodiment of this case and the imaging unit. Here, since the fourth setting parts 1314a and 1314b and the imaging unit 133 are arranged symmetrically left and right within the housing 11, so Figure 8 only the fourth setting part 1314a and the imaging unit 133 on one side will be described, and the rest will not be elaborated. In this embodiment, the imaging unit 133 is arranged on the mounting plate 1331 and then set on the fourth setting part 1314a. The fourth setting part 1314a and the mounting plate 1331 are fixed by a plurality of support members 1332 and a plurality of tension members 1333, and the support members 1332 and the tension members 1333 are arranged at intervals. For example, as Figure 8 shown, one tension member 1333 is arranged between the two upper support members 1332, and one support member 1332 is arranged between the two lower tension members 1333. One end of each support member 1332 penetrates into the fourth setting part 1314a, and the other end supports and abuts against the mounting plate 1331. Therefore, by moving the support member 1332, the part of the mounting plate 1331 abutted by this support member 1332 can be moved. For example, the support member 1332 in the upper left corner in Figure 8 can cause the part of the mounting plate 1331 in the upper left corner in Figure 8 to move. In a preferred embodiment, each support member 1332 is implemented as a screw. Therefore, by rotating the screw clockwise or counterclockwise, the part of the mounting plate 1331 supported by it can be moved away from or closer to the fourth setting part 1314a to achieve the adjustment effect. On the other hand, each tension member 1333 penetrates through the fourth setting part 1314a and the mounting plate 1331 respectively, and an elastic member 1334 is further provided on each tension member 1333 and clamped between the fourth setting part 1314a and the mounting plate 1331. In this configuration, through the reaction force of the elastic member 1334, the effect of stably holding the mounting plate 1331 can be achieved. In a preferred embodiment, the tension member 1333 is implemented as a screw, one end abuts against and penetrates through the fourth setting part 1314a, and the other end is locked on the mounting plate 1331, and a compression spring is sleeved on its stud. Therefore, the compression amount of the compression spring clamped between the fourth setting part 1314a and the mounting plate 1331 can be adjusted by rotating the screw, and then the tension and stability effect can be achieved. Accordingly, by arranging the support members 1332 and the tension members 1333 at intervals up and down and left and right, and then cooperating with the elastic member 1334 arranged on the tension member 1333, the adjustment of the three-dimensional setting angle of the mounting plate 1331 can be realized, and then the focal length and the pitch angle of the imaging unit 133 can be adjusted to ensure the best imaging effect. This adjustment mechanism not only has a simple structure, but also directly utilizes the structure of the second positioning and assembling frame 131 to achieve it, with high cost-effectiveness and is a very advantageous design.

[0070] Next, please refer to Figure 9, which shows a schematic diagram of the control module of the barcode scanning device according to the embodiment of this case. The control module 14 is arranged below the second positioning and assembling frame 131. On the one hand, the space below the W-shaped structure is utilized to effectively prevent the increase in the volume of the housing 11. On the other hand, the installation position is close to the bottom plate 113 of the housing 11. Therefore, when there is a need for calibration, maintenance and other operations, only the bottom plate 113 needs to be opened to carry out the operations, which is helpful for the convenience of both assembly and post-assembly adjustment. Here, the control module 14 includes a circuit configuration for controlling the barcode scanning device 10 and a circuit configuration for imaging and image processing. For example, a power supply and control circuit board, an image processor, etc., but not limited thereto.

[0071] In summary, in this case, the scanning core components of the barcode scanning device are divided into a first modular set and a second modular set. Among them, the first positioning and assembling frame and the second positioning and assembling frame are adopted. In addition to defining the relative position relationship between the corresponding components in the first modular set and the second modular set, the relative position between each component and the detection window in the housing of the barcode scanning device is also defined. Therefore, the assembly operations of the originally scattered components can be simplified into a modular assembly method, effectively simplifying the assembly process, improving the assembly unity, accuracy and efficiency, greatly saving the assembly time, and also reducing the influence of human operation. In addition, with the adjustment mechanism corresponding to each component, the fine adjustment after assembly can also be easily and quickly achieved.

[0072] It should be noted that the above is only a preferred embodiment proposed to illustrate this case. This case is not limited to the described embodiment. The scope of this case is determined by the appended claims. And this case can be variously modified by those skilled in the art, but all do not depart from the scope protected by the appended claims.

Claims

1. A bar code scanning device, characterized in that, Comprising: A housing having a detection window for setting a barcode; A first modular assembly disposed within the housing, comprising: At least one first light source for emitting light to irradiate the barcode; At least one second light source for emitting light to irradiate the barcode; and A first positioning and assembly frame for setting and positioning the relative positions of the at least one first light source and the at least one second light source; and A second modular assembly disposed within the housing, comprising: At least one reflective optical element for reflecting light from the barcode; At least one imaging unit for receiving an image of the barcode reflected from the at least one reflective optical element; and A second positioning and assembly frame for setting and positioning the relative positions of the at least one reflective optical element and the at least one imaging unit, wherein the relative positions of the at least one first light source, the at least one second light source, the at least one reflective optical element and the at least one imaging unit with respect to the detection window are achieved by positioning the first positioning and assembly frame and the second positioning and assembly frame within the housing.

2. The barcode scanning device according to claim 1, wherein The detection window is provided on a top plate of the housing, the detection window, the first positioning and assembly frame, and the second positioning and assembly frame are arranged in sequence from top to bottom, and the first positioning and assembly frame and the second positioning and assembly frame are mutually combined and positioned within the housing.

3. The barcode scanning device according to claim 1, wherein The first positioning and assembly frame includes at least one first setting portion and at least one second setting portion for respectively setting the at least one first light source and the at least one second light source.

4. The barcode scanning device according to claim 3, wherein The first positioning and assembly frame includes a plurality of adjustment portions provided on the at least one first setting portion and / or the at least one second setting portion for adjusting the positions of the at least one first light source and / or the at least one second light source.

5. The barcode scanning device according to claim 4, wherein The plurality of adjustment portions include at least one slot, and the at least one first light source and / or the at least one second light source can move along the long axis direction of the at least one slot.

6. The barcode scanning device according to claim 1, wherein The second positioning and assembly frame includes at least one third setting portion and at least one fourth setting portion for respectively setting the at least one reflective optical element and the at least one imaging unit.

7. The bar code scanning device according to claim 6, characterized in that, The second positioning and assembly frame includes a plurality of positioning members provided on the at least one third setting portion for positioning the at least one reflective optical element.

8. The barcode scanning device according to claim 6, characterized in that, Further comprising: At least one mounting plate for setting the at least one imaging unit; and A plurality of support members, a plurality of tension members and a plurality of elastic members for setting the at least one mounting plate on the at least one fourth setting portion of the second positioning and assembly frame, and for adjusting the relative position of the at least one mounting plate and the at least one fourth setting portion, thereby adjusting the pitch angle and / or focal length of the at least one imaging unit.

9. The barcode scanning device according to claim 1, characterized in that, Further comprising a light-shielding adapter plate provided above the detection window to define the range of the detection window for setting the barcode.

10. The barcode scanning device according to claim 1, characterized in that, A top plate of the housing for setting the detection window has a first set of opposite sides and a second set of opposite sides, and the length of the first set of opposite sides is greater than the length of the second set of opposite sides.

11. The barcode scanning device according to claim 10, wherein, The at least one first light source includes two first LED arrays, which are respectively arranged corresponding to the first group of opposite sides, and the light-emitting surfaces of each of the two first LED arrays face the detection window and form a 90-degree angle with the plane of the detection window.

12. The barcode scanning device according to claim 10, wherein The at least one second light source includes two second LED arrays, which are respectively arranged corresponding to the second group of opposite sides, and the light-emitting surfaces of each of the two second LED arrays face the detection window and form a 45-degree angle with the plane of the detection window.

13. The barcode scanning device according to claim 10, characterized in that, The light-emitting angles of the at least one first light source and the at least one second light source are 120 degrees.

14. The bar code scanning device according to claim 10, characterized in that, The at least one reflection optical element includes two reflectors, which are arranged adjacent to each other along the length direction of the first group of opposite sides below the detection window, and the two reflecting surfaces of the two reflectors respectively face the adjacent one of the second group of opposite sides and form an acute angle with the detection window, and the at least one imaging unit includes two cameras, which are respectively arranged between each of the two reflectors and the adjacent one of the second group of opposite sides and face the reflecting surfaces of the two reflectors.

15. The barcode scanning device according to claim 14, wherein The cross-section of the second positioning and assembling frame along the arrangement direction of the at least one reflection optical element and the at least one imaging unit has a W-shaped shape.

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