Barcode scanning device

Abstract

The invention relates to the technical field of code scanning, and discloses a bar code scanning device which comprises a connecting plate arranged on a conveying belt; a placing disc for placing a material provided with an electronic tag is rotationally connected to the connecting plate; the code scanning assembly scans the electronic tag; four open slots are formed in the periphery of the grooved wheel; a concave arc surface is arranged between every two adjacent open slots; the disc can rotate; the notch disc is arranged on the disc and is provided with a notch; the outer arc surface of the notch disc is matched with the concave arc surface; the stand column is arranged on the disc and is close to the notch. The stand columns are suitable for sliding into the open grooves. The bar code scanning device has a first state in which the disc rotates, the stand column slides into the open slot, the grooved wheel rotates, the placing disc rotates, and the electronic tag rotates to a scanning range of the code scanning assembly. And in the second state, the outer cambered surface slides on the concave cambered surface, and the material is static. Through cooperation of the stand column and the open slot, the electronic tag is rotated by 90 degrees each time, so that the electronic tag is rotated to the scanning range of the code scanning assembly, the barcode scanning efficiency is improved, and the labor cost is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of barcode scanning, and in particular to a barcode scanning device. Background Art

[0002] Warehousing refers to the act of storing and keeping materials in a warehouse. It plays a vital role in promoting production and improving logistics efficiency in the entire material circulation. There are many kinds of materials in the warehouse, and it is difficult to accurately identify them after they are packaged. In order to facilitate and understand the relevant information of the materials in more detail, electronic tags can be attached to the materials or the packaged materials. The electronic tags can be in the form of barcodes. The above electronic tags contain all the information of the materials. By identifying the above electronic tags, the status of the materials can be grasped at any time.

[0003] Existing barcode scanning devices for warehouse management can use a barcode scanner to scan the electronic tag to obtain all the information of the material. Generally, the material is placed on a conveyor belt and scanned continuously. However, due to the uncertain orientation of the electronic tag and the fixed position of the barcode scanner, the barcode scanner may not be facing the electronic tag, making it difficult for the barcode scanner to scan the barcode. If the material is rotated manually, the efficiency of the barcode scanning operation will be seriously reduced and the labor cost will increase. Summary of the invention

[0004] In view of this, the present invention provides a barcode scanning device to solve the problem that due to the uncertain orientation of the electronic tag and the fixed position of the scanning gun, the scanning gun may not be directly facing the electronic tag, and the material needs to be manually rotated, which seriously reduces the efficiency of the barcode scanning operation and increases labor costs.

[0005] The present invention provides a barcode scanning device, comprising: frame; A conveyor belt, arranged on the frame; A connecting plate is arranged on the conveyor belt; the connecting plate is suitable for moving along the conveying direction of the conveyor belt; A placing plate is rotatably connected to the connecting plate through a rotating rod assembly, the placing plate is suitable for placing materials, and an electronic tag is provided on the materials; A code scanning component is arranged on the frame; the code scanning component is suitable for scanning the electronic label on the material; A sheave is arranged on the rotating rod assembly, and four open grooves are evenly spaced and arranged on the outer circumference of the sheave; the opening directions of the four open grooves are arranged to diverge outwards from the center of the sheave; and a concave arc surface is arranged between adjacent open grooves on the outer circumference of the sheave; A disc, adapted to be driven to rotate by a power assembly; A notched disk is arranged on the circular disk, and a notch is provided on one side of the notched disk; the outer arc surface of the notched disk is matched with the concave arc surface; A column is arranged on the disc, and the column is arranged near the notch of the notch disc; the column is suitable for sliding into the open groove; The barcode scanning device has a first state in which the disc rotates, the column slides into the open slot, drives the groove wheel to rotate, and then drives the placement disc to rotate, so that the electronic tag of the material rotates to the scanning range of the barcode scanning component; and a second state in which the outer arc surface of the notched disc slides on the concave arc surface of the groove wheel and the material is stationary. Beneficial effect: The present application adopts the above technical solution, and through the cooperation of the column and the open slot, it can rotate 90 degrees each time, so that the electronic tag of the material rotates to the scanning range of the barcode scanning component, improving the efficiency of the barcode scanning operation and reducing labor costs; through the cooperation of the outer arc surface and the concave arc surface, the material is intermittently stationary, ensuring that the barcode scanning component can smoothly and accurately scan the electronic tag of the material, and achieve the effect of automatic scanning.

[0006] Optionally, the power assembly includes: A first rotating rod, the bottom end of which is rotatably connected to the connecting plate, and the top end of the first rotating rod is fixedly connected to the center of the bottom surface of the disc; A gear, mounted on the first rotating rod through a one-way bearing; A rack is arranged on the frame along the conveying direction of the conveyor belt; and the rack is arranged upstream along the conveying direction of the conveyor belt relative to the code scanning component; the rack is suitable for meshing with the gear; A first elastic member, disposed between the gear and the connecting plate; The power assembly has a state in which the gear is meshed with the rack, and when the gear rotates in the first direction, the first elastic member accumulates elastic force; and a state in which the gear is disengaged from the rack, and under the elastic force of the first elastic member, the gear rotates in the second direction, thereby driving the disc to rotate through the first rotating rod; the first direction is opposite to the second direction. Beneficial effect: The present application adopts the above technical solution, and through the accumulation of force by the first elastic member, when the first elastic member is released, the disc rotates, thereby driving the material on the placement plate to rotate, thereby achieving a certain degree of energy saving effect.

[0007] Optionally, in the power storage state, the number of turns of the gear is at least four; after the gear is disengaged from the rack, the material is facing the position of the code scanning component. Beneficial effect: The present application adopts the above technical solution to ensure that the material rotates 90 degrees at least four times, and the material can be rotated at least 360 degrees; and when the power storage state ends and the power release state is entered, the material is facing the position of the code scanning component, ensuring the continuous connection of the automated operation and improving the code scanning efficiency.

[0008] Optionally, the first elastic member is a torsion spring.

[0009] Optionally, the rotating rod assembly comprises: A third rotating rod, the bottom end of which is rotatably connected to the connecting plate; The telescopic rod has a bottom end fixedly connected to the third rotating rod, a top end of the telescopic rod fixedly connected to the center of the bottom surface of the placement plate, and the telescopic rod is suitable for telescoping in the vertical direction.

[0010] Optionally, the telescopic rod includes: a first fixed portion and a telescopic portion connected via a spline structure.

[0011] Optionally, it also includes: The lifting component is arranged on the connection plate and connected to the placement plate, and the lifting component is suitable for driving the placement plate to rise and fall. Beneficial effect: The present application adopts the above technical solution to facilitate the scanning component to scan the electronic tags at different heights.

[0012] Optionally, the lifting assembly includes: A second rotating rod, the bottom end of which is rotatably connected to the connecting plate, and the second rotating rod (30) is transmission-connected to the first rotating rod via a transmission structure, and the second rotating rod is adapted to rotate along with the rotation of the first rotating rod; A cylindrical member, the bottom end of which is fixedly connected to the top end of the second rotating rod; a closed-loop groove is provided on the outer circumference of the cylindrical member; the groove is formed by alternating two retaining segments and two moving segments; the two retaining segments are respectively located at two different heights, and the two moving segments are transitions between adjacent retaining segments; An L-shaped member, the end of the horizontal section of which is located in the groove of the cylindrical member; A lifting rod is fixedly connected to the vertical section of the L-shaped member through a connecting member; the top end of the lifting rod abuts against the bottom surface of the placement plate; The barcode scanning device has a third state in which the end of the horizontal section of the L-shaped part is located in the retaining section of the groove, and the column slides into the open groove to drive the groove wheel to rotate; and a fourth state in which the outer arc surface of the notched disk slides on the concave arc surface of the groove wheel, and the placement disk is raised and lowered with the lifting rod, when the end of the horizontal section of the L-shaped part is located in the moving section of the groove.

[0013] Optionally, the transmission structure includes: A first pulley, disposed on the second rotating rod; The second pulley is arranged on the first rotating rod, and the second pulley is connected to the first pulley through a belt.

[0014] Optionally, the lifting rod includes: a second fixed part and a lifting part connected by a spline structure, a second elastic member is provided between the second fixed part and the lifting part, the bottom end of the second fixed part is fixed to the connecting plate, and the top end of the lifting part is slidably connected to the annular groove provided on the bottom surface of the placing plate through a sliding column; the second elastic member is suitable for providing a force to separate the second fixed part and the lifting part. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0016] Figure 1 It is a schematic diagram of the three-dimensional structure of a barcode scanning device provided in an embodiment of the present invention; Figure 2 for Figure 1 A schematic diagram of the local enlarged structure at point A in the middle; Figure 3 A schematic diagram of a partial three-dimensional structure of a barcode scanning device provided in an embodiment of the present invention Figure 1 ; Figure 4 A schematic diagram of a partial three-dimensional structure of a barcode scanning device provided in an embodiment of the present invention Figure 2 ; Figure 5 A schematic diagram of a partial three-dimensional structure of a barcode scanning device provided in an embodiment of the present invention Figure 3 ; Figure 6 A schematic diagram of a partial three-dimensional structure of a barcode scanning device provided in an embodiment of the present invention Figure 4 ; Figure 7 A schematic diagram of a partial three-dimensional structure of a barcode scanning device provided in an embodiment of the present invention Figure 5 ; Figure 8 A schematic diagram of a partial three-dimensional structure of a barcode scanning device provided in an embodiment of the present invention Figure 6 .

[0017] Description of reference numerals: 1. Conveyor belt; 2. Side plate; 3. Barcode scanner; 4. Placement plate; 5. Connecting plate; 6. Connecting plate; 7. Rack; 8. Gear; 9. One-way bearing; 10. Belt; 11. Disc; 12. Notched disc; 13. Column; 14. Placement groove; 15. Bump; 16. Annular groove; 17. Sliding column; 18. Lifting rod; 19. Connecting piece; 20. L-shaped piece; 21. Torsion spring; 22. First rotating rod; 23. Cylindrical piece; 24. First pulley; 25. Second pulley; 26. Telescopic rod; 27. Grooved wheel; 28. Holding section; 29. ​​Moving section; 30. Second rotating rod; 31. Third rotating rod; 32. Frame. DETAILED DESCRIPTION

[0018] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention.

[0019] like Figures 1 to 8 A specific embodiment of the barcode scanning device shown includes: a frame 32, a conveyor belt 1, a connection plate 5, a placement plate 4, a code scanning component, a groove wheel 27, a disc 11, a notched disc 12, a column 13 and a lifting component. The barcode scanning device described in the present application can be used for warehouse management. The groove wheel 27, the disc 11, the notched disc 12 and the column 13 form an intermittent rotating component.

[0020] like Figure 1 and Figure 8 As shown, the conveyor belt 1 is arranged on the frame 32. The connecting plate 5 is arranged on the conveyor belt 1; specifically, as Figure 4 As shown, the connection plate 5 is arranged on the conveyor belt 1 through a protrusion 15 fixed at the bottom. The connection plate 5 can be a plurality of connection plates arranged evenly at intervals. The connection plate 5 is suitable for moving along the conveying direction of the conveyor belt 1. The placement plate 4 is rotatably connected to the connection plate 5 through a rotating rod assembly. The placement plate 4 is suitable for placing materials, and an electronic tag is provided on the material. Further, as Figure 3As shown, a placement groove 14 is provided on the top surface of the placement plate 4, and the material is located in the placement groove 14. The code scanning component can be a code scanning gun 3. The code scanning gun 3 is arranged on the frame 32. Specifically, the code scanning gun 3 can be fixed to one side of the frame 32 through the side plate 2; the code scanning gun 3 is suitable for scanning the electronic tag on the material. The groove wheel 27 is arranged on the rotating rod assembly, and four open grooves are evenly spaced and arranged on the outer periphery of the groove wheel 27; the groove directions of the four open grooves are arranged to diverge outward from the center of the groove wheel 27; and a concave arc surface is provided between adjacent open grooves on the outer periphery of the groove wheel 27. The disc 11 is suitable for being driven to rotate by a power component. The notched disc 12 is arranged on the disc 11, and the notched disc 12 and the disc 11 are arranged concentrically; and a notch is provided on one side of the notched disc 12; the outer arc surface of the notched disc 12 is adapted to the concave arc surface. The column 13 is arranged on the disc 11, and the column 13 is arranged near the notch of the notch disc 12; the column 13 is suitable for sliding into the open slot. The barcode scanning device has a first state in which the disc 11 rotates, the column 13 slides into the open slot, drives the groove wheel 27 to rotate, and then drives the placement disc 4 to rotate, so that the electronic tag of the material rotates to the scanning range of the barcode scanning gun 3; and a second state in which the outer arc surface of the notch disc 12 slides on the concave arc surface of the groove wheel 27, and the material is stationary, so as to perform the barcode scanning operation.

[0021] like Figure 1 , Figure 2 , Figure 5 and Figure 8As shown, the power assembly includes: a first rotating rod 22, a gear 8, a rack 7 and a first elastic member. The power assembly is also called a power storage assembly. The first rotating rod 22 is arranged in the vertical direction; the bottom end of the first rotating rod 22 is rotatably connected to the connecting plate 5, and the top end of the first rotating rod 22 is fixedly connected to the bottom center of the disc 11. The gear 8 is installed on the first rotating rod 22 through a one-way bearing 9. Specifically, the gear 8 is fixedly sleeved on the outer ring of the one-way bearing 9. The rack 7 is arranged on the frame 32 along the conveying direction of the conveyor belt 1. Specifically, the rack 7 is fixedly connected to one side of the frame 32 through a connecting plate 6. And the rack 7 is arranged upstream along the conveying direction of the conveyor belt 1 relative to the barcode scanning gun 3; the rack 7 is suitable for meshing with the gear 8. The first elastic member is arranged between the gear 8 and the connecting plate 5. The power assembly has a power storage state in which the gear 8 is meshed with the rack 7, and the first elastic member accumulates elastic force when the gear 8 rotates in the first direction; and a force release state in which the gear 8 is separated from the rack 7, and under the action of the elastic force of the first elastic member, the gear 8 rotates in the second direction, and then drives the disk 11 to rotate through the first rotating rod 22; the first direction is opposite to the second direction. Specifically, in the power storage state, the number of circles rotated by the gear 8 is at least four circles; after the gear 8 is separated from the rack 7, the material is facing the position of the barcode scanner 3. The first elastic member is a torsion spring 21. A torsion spring 21 is installed between the bottom of the gear 8 and the top of the connecting plate 5.

[0022] like Figure 6 and Figure 8 As shown, the rotating rod assembly includes: a third rotating rod 31 and a telescopic rod 26. The third rotating rod 31 is arranged in the vertical direction, and the bottom end of the third rotating rod 31 is rotatably connected to the connecting plate 5. The bottom end of the telescopic rod 26 is fixedly connected to the third rotating rod 31, and the top end of the telescopic rod 26 is fixedly connected to the bottom center of the placement tray 4, and the telescopic rod 26 is suitable for telescoping in the vertical direction. Specifically, the telescopic rod 26 includes: a first fixed portion and a telescopic portion connected by a spline structure. The telescopic portion is fixedly connected to the third rotating rod 31, and the first fixed portion is fixedly connected to the bottom center of the placement tray 4. Figure 6 In the figure, it is shown that the top end of the telescopic rod 26 is separated from the placement plate 4, and in actual use, it will not be separated.

[0023] like Figure 4 , Figure 5 and Figure 7As shown, the lifting assembly is arranged on the connection plate 5, and the lifting assembly is connected to the placement plate 4, and the lifting assembly is suitable for driving the placement plate 4 to rise and fall. The lifting assembly comprises: a second rotating rod 30, a cylindrical member 23, an L-shaped member 20 and a lifting rod 18. The second rotating rod 30 is arranged in the vertical direction, the bottom end of the second rotating rod 30 is rotatably connected to the connection plate 5, and the second rotating rod 30 is transmission-connected to the first rotating rod 22 through a transmission structure, and the second rotating rod 30 is suitable for rotating with the rotation of the first rotating rod 22. The bottom end of the cylindrical member 23 is fixedly connected to the top end of the second rotating rod 30; a closed-loop groove is arranged on the outer periphery of the cylindrical member 23; the groove is formed by alternating two retaining segments 28 and two moving segments 29; the two retaining segments 28 are respectively located at two different heights, and the two moving segments 29 are transitions between adjacent retaining segments 28, and the two moving segments 29 can be arranged symmetrically. The end of the horizontal segment of the L-shaped member 20 is located in the groove of the cylindrical member 23. The lifting rod 18 is arranged in the vertical direction, and the lifting rod 18 is fixedly connected to the vertical section of the L-shaped member 20 through a connecting member 19, and the connecting member 19 can be a plate member; the top end of the lifting rod 18 abuts against the bottom surface of the placement plate 4. The barcode scanning device has a third state in which the end of the horizontal section of the L-shaped member 20 is located in the retaining section 28 of the groove, the column 13 slides into the open groove, and drives the groove wheel 27 to rotate; and a fourth state in which the end of the horizontal section of the L-shaped member 20 is located in the moving section 29 of the groove, the outer arc surface of the notch plate 12 slides on the concave arc surface of the groove wheel 27, and the placement plate 4 is raised and lowered with the lifting rod 18.

[0024] like Figure 5 and Figure 6 As shown, the transmission structure includes: a first pulley 24 and a second pulley 25. The size of the second pulley 25 is smaller than that of the first pulley 24, and the transmission ratio of the first pulley 24 to the second pulley 25 can be 2:1. The first pulley 24 is arranged on the second rotating rod 30. The second pulley 25 is arranged on the first rotating rod 22, and the second pulley 25 is connected to the first pulley 24 through a belt 10.

[0025] like Figure 4 As shown, the lifting rod 18 includes: a second fixed part and a lifting part connected by a spline structure, a second elastic member is provided between the second fixed part and the lifting part, the bottom end of the second fixed part is fixed on the connecting plate 5, and the top end of the lifting part is slidably connected to the annular groove 16 provided on the bottom surface of the placing plate 4 through a sliding column 17; the second elastic member is suitable for providing a force to separate the second fixed part and the lifting part. The second elastic member can be a spring.

[0026] The process and working principle of the barcode scanning device described in the present application are briefly described as follows: first, place the material inside the placement slot 14 on the placement plate 4, and the conveyor belt 1 can drive the placement plate 4 to move. When the gear 8 and the rack 7 are in contact, the gear 8 rotates, and the gear 8 drives the outer ring of the one-way bearing 9 to rotate, and the torsion spring 21 generates torque; at this time, the one-way bearing 9 will not drive the first rotating rod 22 to rotate; when the conveyor belt 1 transports the material to the scanning position, the rack 7 and the gear 8 are just separated, and the number of circles rotated by the gear 8 is greater than or equal to four circles. Due to the torsion force of the torsion spring 21, the gear 8 rotates in the opposite direction and drives the first rotating rod 22 to rotate through the one-way bearing 9, and the first rotating rod 22 drives the disc 11 to rotate, and the notched disc 12, the second pulley 25 and the column 13 also rotate accordingly. When the column 13 rotates to contact the open groove on the groove wheel 27, it drives the groove wheel 27 to rotate ninety degrees to rotate and change the surface of the material; the gear 8 rotates one circle, the placement plate 4 and the material rotate 90 degrees, and when the outer arc surface of the notched disc 12 slides on the concave arc surface of the groove wheel 27, the material remains stationary for the barcode scanning gun 3 to scan the code.

[0027] At the same time, the second pulley 25 rotates, driving the first pulley 24 to rotate through the belt 10. The second pulley 25 rotates one circle, the first pulley 24 rotates half a circle, the first pulley 24 drives the second rotating rod 30 to rotate, the second rotating rod 30 drives the cylindrical member 23 to rotate, and the cylindrical member 23 drives the closed-loop groove to rotate. When the end of the horizontal section of the L-shaped member 20 enters the moving section 29 from the retaining section 28, the L-shaped member 20 moves up and down, thereby driving the connecting member 19 to move up and down, thereby driving the lifting part of the lifting rod 18 to move up and down, and finally driving the sliding column 17, the placement plate 4 and the material to move up and down. It should be noted that when the end of the horizontal section of the L-shaped member 20 is located in the retaining section 28, the column 13 enters the inside of the open slot to ensure that the material can rotate and change sides smoothly; after the column 13 leaves the open slot, it ensures smooth scanning of the code.

[0028] Although the embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations are all within the scope defined by the appended claims.

Claims

1. A barcode scanning device, characterized in that: include: Rack(32); A conveyor belt (1) arranged on the frame (32); A connecting plate (5) is arranged on the conveyor belt (1); the connecting plate (5) is suitable for moving along the conveying direction of the conveyor belt (1); A placement plate (4) is rotatably connected to the connection plate (5) via a rotating rod assembly, the placement plate (4) is suitable for placing materials, and an electronic tag is provided on the material; A code scanning component is arranged on the frame (32); the code scanning component is suitable for scanning the electronic label on the material; A groove wheel (27) is arranged on the rotating rod assembly, and four open grooves are evenly spaced and arranged on the outer circumference of the groove wheel (27); the groove directions of the four open grooves are arranged to diverge outwards from the center of the groove wheel (27); and concave arc surfaces are arranged between adjacent open grooves on the outer circumference of the groove wheel (27); The disc (11) is adapted to be driven to rotate by a power assembly; A notched disk (12) is arranged on the circular disk (11), and a notch is provided on one side of the notched disk (12); the outer arc surface of the notched disk (12) is adapted to the concave arc surface; A column (13) is arranged on the circular disk (11), and the column (13) is arranged close to the notch of the notch disk (12); the column (13) is suitable for sliding into the open groove; The barcode scanning device has a first state in which the disc (11) rotates, the column (13) slides into the open groove, driving the groove wheel (27) to rotate, and then driving the placement disc (4) to rotate, so that the electronic tag of the material rotates to within the scanning range of the barcode scanning component; and a second state in which the outer arc surface of the notched disc (12) slides on the concave arc surface of the groove wheel (27), and the material is stationary.

2. The barcode scanning device according to claim 1, characterized in that: The power assembly comprises: A first rotating rod (22), the bottom end of which is rotatably connected to the connecting plate (5), and the top end of the first rotating rod (22) is fixedly connected to the center of the bottom surface of the disc (11); A gear (8) mounted on the first rotating rod (22) via a one-way bearing (9); A rack (7) is arranged on the frame (32) along the conveying direction of the conveyor belt (1); and the rack (7) is arranged upstream along the conveying direction of the conveyor belt (1) relative to the code scanning component; the rack (7) is suitable for meshing with the gear (8); A first elastic member, arranged between the gear (8) and the connecting plate (5); The power assembly has a state in which the gear (8) is meshed with the rack (7), and the first elastic member accumulates elastic force when the gear (8) rotates in a first direction; and a state in which the gear (8) is disengaged from the rack (7), and under the action of the elastic force of the first elastic member, the gear (8) rotates in a second direction, thereby driving the disk (11) to rotate via the first rotating rod (22); the first direction is opposite to the second direction.

3. The barcode scanning device according to claim 2, characterized in that: In the power storage state, the gear (8) rotates at least four times; after the gear (8) is disengaged from the rack (7), the material is located directly opposite the position of the code scanning component.

4. The barcode scanning device according to claim 2, characterized in that: The first elastic member is a torsion spring (21).

5. The barcode scanning device according to claim 2, characterized in that: The rotating rod assembly comprises: A third rotating rod (31), the bottom end of which is rotatably connected to the connecting plate (5); A telescopic rod (26) has a bottom end fixedly connected to the third rotating rod (31), a top end of the telescopic rod (26) fixedly connected to the center of the bottom surface of the placement plate (4), and the telescopic rod (26) is suitable for telescoping in a vertical direction.

6. The barcode scanning device according to claim 5, characterized in that: The telescopic rod (26) comprises a first fixing portion and a telescopic portion connected in a spline structure.

7. The barcode scanning device according to any one of claims 2 to 6, characterized in that: Also includes: A lifting component is arranged on the connection plate (5), and the lifting component is connected to the placement plate (4), and the lifting component is suitable for driving the placement plate (4) to move up and down.

8. The barcode scanning device according to claim 7, characterized in that: The lifting assembly comprises: A second rotating rod (30), the bottom end of which is rotatably connected to the connecting plate (5), and the second rotating rod (30) is transmission-connected to the first rotating rod (22) via a transmission structure, and the second rotating rod (30) is adapted to rotate along with the rotation of the first rotating rod (22); A cylindrical member (23), the bottom end of which is fixedly connected to the top end of the second rotating rod (30); a closed-loop groove is provided on the outer circumference of the cylindrical member (23); the groove is formed by alternating two retaining segments (28) and two moving segments (29); the two retaining segments (28) are respectively located at two different heights, and the two moving segments (29) are transitions between adjacent retaining segments (28); An L-shaped member (20), the end of the horizontal section of which is located in the groove of the cylindrical member (23); A lifting rod (18) is fixedly connected to the vertical section of the L-shaped member (20) via a connecting member (19); the top end of the lifting rod (18) abuts against the bottom surface of the placement plate (4); The barcode scanning device has a third state in which the end of the horizontal section of the L-shaped member (20) is located in the retaining section (28) of the groove, the column (13) slides into the open groove, driving the groove wheel (27) to rotate; and a fourth state in which the end of the horizontal section of the L-shaped member (20) is located in the moving section (29) of the groove, the outer arc surface of the notched disk (12) slides on the concave arc surface of the groove wheel (27), and the placement disk (4) is raised and lowered along with the lifting rod (18).

9. The barcode scanning device according to claim 8, characterized in that: The transmission structure comprises: A first pulley (24) is arranged on the second rotating rod (30); The second belt pulley (25) is arranged on the first rotating rod (22), and the second belt pulley (25) is connected to the first belt pulley (24) via a belt (10).

10. The barcode scanning device according to claim 8, characterized in that: The lifting rod (18) comprises: a second fixed portion and a lifting portion connected by a spline structure, a second elastic member is provided between the second fixed portion and the lifting portion, the bottom end of the second fixed portion is fixed to the connecting plate (5), and the top end of the lifting portion is slidably connected to an annular groove (16) provided on the bottom surface of the placement plate (4) via a sliding column (17); the second elastic member is suitable for providing a force that causes the second fixed portion and the lifting portion to separate.

Images