A high-precision automatic alignment two-dimensional code scanning and recognition device

Abstract

The invention discloses a high-precision automatic alignment two-dimensional code scanning identifier, and its technical solution is: it includes an identifier shell, and an omnidirectional scanning alignment mechanism is arranged inside the identifier shell; the omnidirectional scanning alignment mechanism includes a cross support plate, the cross support plate is fixedly arranged inside the identifier shell, one side of the cross support plate is fixedly connected to a first motor, the output end of the first motor is fixedly connected to a transmission shaft, the transmission shaft passes through the cross support plate and is connected to the cross support plate through a bearing, one end of the transmission shaft is fixedly connected to a U-shaped bracket, one side of the U-shaped bracket is fixedly connected to a fixed shaft, one end of the fixed shaft is fixedly connected to a support block, one side of the support block is connected to a second connecting shell through a bearing, and the other side of the support block is connected to the first connecting shell through a bearing. The beneficial effects are: reducing the waste of manpower and material resources, expanding the scanning and recognition range, making the scanning more accurate, and being able to convert the scanning area.

Description

Technical Field

[0001] The present invention relates to the technical field of two-dimensional code scanning and recognition devices, and in particular to a high-precision automatic alignment two-dimensional code scanning and recognition device. Background Art

[0002] Two-dimensional code, also known as two-dimensional barcode or two-dimensional barcode, is a black and white graphic that records data symbol information in a certain geometric shape distributed in a plane (two-dimensional direction) according to a certain rule; in the compilation of the code, the concept of "0" and "1" bit streams that constitute the internal logic basis of the computer is cleverly used, and several geometric shapes corresponding to binary are used to represent text numerical information, which is automatically read by image input devices or photoelectric scanning devices to realize automatic information processing: it has some common features of barcode technology: each code system has its specific character set; each character occupies a certain width; has certain verification functions, etc. At the same time, it also has the characteristics of automatic recognition of information in different industries and processing of graphic rotation changes.

[0003] The existing QR code will store personal identity information. When passing through some important checkpoints, the personal identity information needs to be identified by a QR code scanning identifier. The existing scanning is performed through a handheld scanning device. During the scanning work, the staff needs to work for a long time, resulting in a gradual decrease in staff efficiency, and the battery needs to be replaced, wasting manpower and material resources. When using a vertical fixed scanning device, the camera in the scanning device is concentrated in a smaller past area, resulting in a small scanning and recognition range, inaccurate scanning, and an inability to convert the scanning area. Summary of the invention

[0004] To this end, the present invention provides a high-precision automatic alignment two-dimensional code scanning and recognition device to solve the problem that when performing scanning work, workers need to work for a long time, resulting in a gradual decrease in worker efficiency and the need to replace batteries, wasting manpower and material resources. When using a vertical fixed scanning device, the camera in the scanning device is concentrated in a smaller past area, resulting in a small scanning and recognition range, inaccurate scanning, and an inability to convert the scanning area.

[0005] In order to achieve the above-mentioned object, the present invention provides the following technical solutions: a high-precision automatic alignment two-dimensional code scanning identifier, comprising an identifier housing, wherein an omnidirectional scanning alignment mechanism is provided inside the identifier housing;

[0006] The omni-directional scanning alignment mechanism includes a cross support plate, which is fixedly arranged inside the identifier housing, a first motor is fixedly connected to one side of the cross support plate, a transmission shaft is fixedly connected to the output end of the first motor, the transmission shaft passes through the cross support plate and is connected to the cross support plate through a bearing, a U-shaped bracket is fixedly connected to one end of the transmission shaft, a fixed shaft is fixedly connected to one side of the U-shaped bracket, a support block is fixedly connected to one end of the fixed shaft, a second connection shell is connected to one side of the support block through a bearing, and a first connection shell is connected to the other side of the support block through a bearing, a cross bar is fixedly connected between the first connection shell and the second connection shell, and one side of the cross bar A support rod is fixedly connected, one end of the support rod is fixedly connected to a scanning and identification camera, a pulley bracket is provided on the inner side of the second connecting shell, the top and bottom of the pulley bracket are connected to pulleys through bearings, the top and bottom of the second connecting shell are fixedly embedded with slide rails, the slide rails are in contact with the pulley, one side of the pulley bracket is connected to a third connecting rod through a bearing, one end of the third connecting rod is connected to a second connecting plate through a bearing, the other side of the second connecting plate is fixedly connected to a fourth connecting rod, the fourth connecting rod passes through the U-shaped bracket and is connected to the U-shaped bracket through a bearing, a second motor is fixedly provided on one side of the U-shaped bracket, and the output end of the second motor is fixedly connected to the fourth connecting rod.

[0007] Preferably, a buffer assembly is provided on one side of the first connecting shell, and the buffer assembly includes a sliding rod, the sliding rod is fixedly arranged inside the first connecting shell, a sliding sleeve is provided on the outside of the sliding rod, one side of the sliding sleeve is fixedly connected to a first spring, the first spring is sleeved on the outside of the sliding rod, one end of the first spring is fixedly connected to the side wall of the first connecting shell, one side of the sliding sleeve is connected to a first connecting rod through a bearing, one side of the first connecting rod is connected to a first connecting plate through a bearing, one side of the first connecting plate is connected to a second connecting rod through a bearing, and one end of the second connecting rod is connected to the side wall of the U-shaped bracket through a bearing.

[0008] Preferably, a second spring is fixedly connected to the other side of the sliding sleeve, the second spring is sleeved outside the first spring, and the other end of the second spring is fixedly connected to the side wall of the first connecting shell.

[0009] Preferably, the slide rod is provided with a slide groove at the top and bottom, and the slide sleeve is provided with two side grooves on the inner side, the two side grooves are respectively provided at the top and bottom of the slide rod, two connecting rods are fixed inside the side grooves, the two connecting rods are externally connected with rollers through bearings, and the two rollers are in contact with the slide grooves.

[0010] Preferably, a transparent cover plate is fixedly embedded on one side of the identifier housing.

[0011] Preferably, a fixing rod is fixedly connected to the bottom of the identifier housing, and a base is fixedly provided at the bottom of the fixing rod.

[0012] Preferably, an infrared sensor is embedded on one side of the identifier housing.

[0013] Preferably, a programmable PLC and a data processor are fixedly disposed inside the identifier housing, respectively.

[0014] Preferably, the programmable PLC input end is provided with an A / D converter, the data processor is electrically connected to the A / D converter, and the data processor is electrically connected to the infrared sensor and the scanning recognition camera.

[0015] Preferably, the programmable PLC output end is provided with a D / A converter, and the first motor and the second motor are both electrically connected to the D / A converter.

[0016] The embodiments of the present invention have the following advantages:

[0017] 1. The second connecting shell of the omnidirectional scanning alignment mechanism performs pendulum motion around the support block, so that the second connecting shell drives the scanning recognition camera at one end of the crossbar and the support rod to perform pendulum motion, so that the scanning area of ​​the scanning recognition camera changes. When the scanning recognition camera performs pendulum motion, it can stop at any position of the pendulum path at any time, and the scanning recognition camera will also rotate a circle with the U-shaped bracket, so that the scanning recognition camera is rotated by the second connecting shell and driven to any position, thereby achieving the purpose of automatic omnidirectional scanning, reducing the waste of manpower and material resources, expanding the scanning recognition range, and making the scanning more accurate, and being able to convert the scanning area;

[0018] 2. The second spring and the first spring on both sides of the sliding sleeve of the buffer assembly will switch back and forth between compression and tension as the sliding sleeve slides. The roller inside the sliding sleeve slides on the sliding groove, which facilitates the sliding of the sliding sleeve, improves the buffering efficiency, reduces noise, and avoids excessive swing amplitude that may cause derailment. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the implementation methods of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for the implementation methods or the description of the prior art. Obviously, the drawings in the following description are only exemplary, and for ordinary technicians in this field, other implementation drawings can be derived from the provided drawings without creative work.

[0020] The structures, proportions, sizes, etc. illustrated in this specification are only used to match the contents disclosed in the specification so as to facilitate understanding and reading by persons familiar with the technology. They are not used to limit the conditions under which the present invention can be implemented, and therefore have no substantial technical significance. Any structural modification, change in proportion or adjustment of size shall still fall within the scope of the technical contents disclosed in the present invention without affecting the effects and purposes that can be achieved by the present invention.

[0021] Figure 1 A schematic diagram of the overall structure provided by the present invention;

[0022] Figure 2 A diagram of the housing body of the identifier provided by the present invention;

[0023] Figure 3 A cross-sectional view of a housing of the identifier provided by the present invention;

[0024] Figure 4 A three-dimensional diagram of the omnidirectional scanning alignment mechanism provided by the present invention;

[0025] Figure 5 A top view of the omnidirectional scanning alignment mechanism provided by the present invention;

[0026] Figure 6 A side view of the omnidirectional scanning alignment mechanism provided by the present invention;

[0027] Figure 7 A three-dimensional diagram of a first connecting shell provided by the present invention;

[0028] Figure 8 A cross-sectional view of a first connection shell provided by the present invention;

[0029] Fig. 9 The present invention provides Figure 6 A magnified view of the structure of the middle part A;

[0030] Fig.10 The present invention provides Figure 8 A magnified view of the structure of the middle B section;

[0031] Fig.11 This is a schematic diagram of the system structure provided by the present invention.

[0032] In the figure: 1 identifier housing, 2 transparent cover plate, 3 fixing rod, 4 base, 5 infrared sensor, 6 cross support plate, 7 first motor, 8 transmission shaft, 9 programmable PLC, 10 data processor, 11 fixing shaft, 12 scanning recognition camera, 13 support rod, 14 cross bar, 15 first connecting shell, 16 support block, 17 U-shaped bracket, 18 second motor, 19 second connecting shell, 20 first connecting rod, 21 first connecting plate, 22 second connecting rod, 23 third connecting rod, 24 second connecting plate, 25 fourth connecting rod, 26 slide rail, 27 slide rod, 28 first spring, 29 sliding sleeve, 30 second spring, 31 pulley, 32 pulley bracket, 33 slide groove, 34 connecting rod, 35 roller. DETAILED DESCRIPTION

[0033] The following is a description of the implementation of the present invention by specific embodiments. People familiar with the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. 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 ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] See attached Figure 1-11 The present invention provides a high-precision automatic alignment two-dimensional code scanning and recognition device, comprising a recognition housing 1, wherein an omnidirectional scanning and alignment mechanism is provided inside the recognition housing 1;

[0035] The omnidirectional scanning alignment mechanism includes a cross support plate 6, which is fixedly arranged inside the identifier housing 1, and one side of the cross support plate 6 is fixedly connected to a first motor 7, and the output end of the first motor 7 is fixedly connected to a transmission shaft 8, and the transmission shaft 8 passes through the cross support plate 6 and is connected to the cross support plate 6 through a bearing, and one end of the transmission shaft 8 is fixedly connected to a U-shaped bracket 17, and one side of the U-shaped bracket 17 is fixedly connected to a fixed shaft 11, and one end of the fixed shaft 11 is fixedly connected to a support block 16, and one side of the support block 16 is connected to a second connection shell 19 through a bearing, and the other side of the support block 16 is connected to a first connection shell 15 through a bearing, and a cross bar 14 is fixedly connected between the first connection shell 15 and the second connection shell 19, and one side of the cross bar 14 is fixedly connected A support rod 13, one end of which is fixedly connected to a scanning and identifying camera 12, a pulley bracket 32 ​​is provided inside the second connecting shell 19, the top and bottom of the pulley bracket 32 ​​are connected to pulleys 31 through bearings, the top and bottom of the second connecting shell 19 are fixedly embedded with slide rails 26, the slide rails 26 are in contact with the pulley 31, one side of the pulley bracket 32 ​​is connected to a third connecting rod 23 through a bearing, one end of the third connecting rod 23 is connected to a second connecting plate 24 through a bearing, the other side of the second connecting plate 24 is fixedly connected to a fourth connecting rod 25, the fourth connecting rod 25 passes through the U-shaped bracket 17 and is connected to the U-shaped bracket 17 through a bearing, a second motor 18 is fixedly provided on one side of the U-shaped bracket 17, and the output end of the second motor 18 is fixedly connected to the fourth connecting rod 25;

[0036] In this embodiment, the second motor 18 is started, the second motor 18 is started and drives the fourth connecting rod 25 to rotate, the fourth connecting rod 25 rotates and drives the second connecting plate 24 to rotate, the second connecting plate 24 rotates and drives the third connecting rod 23 to rotate, the third connecting rod 23 rotates and drives the pulley bracket 32 ​​to rotate, because the pulleys 31 at the top and bottom of the pulley bracket 32 ​​are limited by the slide rail 26, the slide rail 26 is fixed to the second connecting shell 19, and one side of the second connecting shell 19 is connected to the support block 16 through a bearing, so that when the third connecting rod 23 drives the pulley bracket 32 ​​to make a circular motion around the fourth connecting rod 25, the pulleys 31 at the top and bottom of the pulley bracket 32 ​​will slide on the slide rail 26, and at the same time push the second connecting shell 19 to make a pendulum motion around the support block 16, so that the second connecting shell 19 drives the scanning and recognition camera 12 at one end of the cross bar 14 and the support bar 13 to make a pendulum motion, so that the scanning area of ​​the scanning and recognition camera 12 changes. The scanning and recognition camera 12 can stop at any position of the pendulum path at any time when doing the pendulum motion, so as to facilitate the scanning area to find the QR code, and start the first motor 7. The first motor 7 starts and drives the transmission shaft 8 to rotate. The transmission shaft 8 rotates and drives the U-shaped bracket 17 to rotate. The U-shaped bracket 17 is fixedly connected to the fixed shaft 11, and the fixed shaft 11 is fixedly connected to the support block 16. After the U-shaped bracket 17 rotates one circle, the scanning and recognition camera 12 will also rotate one circle with the U-shaped bracket 17, so that the scanning and recognition camera 12 is rotated by the second connecting shell 19 and driven to any position. The scanning and recognition camera 12 rotates one circle again at this position, so that the scanning and recognition camera 12 performs all-round scanning and recognition, and improves the scanning efficiency of the QR code. In order to prevent the line of the scanning and recognition camera 12 from being stirred, after the U-shaped bracket 17 rotates one circle, it will be controlled by the first motor 7 to reverse to prevent the line from breaking.

[0037] Among them, in order to achieve the purpose of buffering, the present device is implemented by the following technical scheme: a buffer assembly is provided on one side of the first connecting shell 15, and the buffer assembly includes a sliding rod 27, the sliding rod 27 is fixedly arranged inside the first connecting shell 15, and a sliding sleeve 29 is sleeved on the outside of the sliding rod 27, and one side of the sliding sleeve 29 is fixedly connected with a first spring 28, and the first spring 28 is sleeved on the outside of the sliding rod 27, and one end of the first spring 28 is fixedly connected to the side wall of the first connecting shell 15, and one side of the sliding sleeve 29 is connected to a first connecting rod 20 through a bearing, and one side of the first connecting rod 20 is connected to a first connecting plate 21 through a bearing, and one side of the first connecting plate 21 is connected to a second connecting rod 22 through a bearing, and one end of the second connecting rod 22 is connected to the side wall of the U-shaped bracket 17 through a bearing, and the other side of the sliding sleeve 29 is fixedly connected with a second spring 30, and the second spring 30 is sleeved on the outside of the first spring 28, and the other end of the second spring 30 is fixedly connected to the first connecting rod 20. The side walls of the shell 15 are fixedly connected, and the top and bottom of the slide bar 27 are both provided with a slide groove 33, and the inner side of the slide sleeve 29 is provided with two side grooves, and the two side grooves are respectively arranged at the top and bottom of the slide bar 27, and two connecting rods 34 are fixedly arranged inside the side grooves, and the two connecting rods 34 are both connected to rollers 35 on the outside through bearings, and the two rollers 35 are in contact with the slide groove 33. When the second connecting shell 19 rotates, the cross bar 14 will be driven to rotate, and the cross bar 14 will rotate and drive the first connecting shell 15 to rotate. When the first connecting shell 15 rotates, it will drive the slide sleeve 29 to slide on the slide bar 27. At the same time, the slide sleeve 29 drives the first connecting rod 20 and the first connecting plate 21 to rotate, and the first connecting plate 21 rotates and rotates around the second connecting rod 22, so that the second spring 30 and the first spring 28 on both sides of the slide sleeve 29 will switch between compression and tension states back and forth with the sliding of the slide sleeve 29. At the same time, the rollers 35 inside the slide sleeve 29 slide on the slide groove 33, which is convenient for the slide sleeve 29 to slide.

[0038] In order to achieve the purpose of protecting the scanning and identification camera 12, the device is implemented by the following technical solutions: a transparent cover plate 2 is fixedly embedded on one side of the identifier housing 1, a fixing rod 3 is fixedly connected to the bottom of the identifier housing 1, and a base 4 is fixedly provided at the bottom of the fixing rod 3, and the base 4 has the function of protecting the scanning and identification camera 12;

[0039] Among them, in order to achieve the purpose of automatic control, the present device is implemented by the following technical solutions: an infrared sensor 5 is embedded on one side of the identifier housing 1, a programmable PLC9 and a data processor 10 are fixedly arranged on the inner side of the identifier housing 1, an A / D converter is arranged at the input end of the programmable PLC9, the data processor 10 is electrically connected to the A / D converter, the data processor 10 is electrically connected to the infrared sensor 5 and the scanning recognition camera 12, a D / A converter is arranged at the output end of the programmable PLC9, the first motor 7 and the second motor 18 are both electrically connected to the D / A converter, when a person approaches the identifier housing 1 for a certain distance, the infrared sensor 5 senses that the person is approaching, and sends an electrical signal to the data processor 10 through the infrared sensor 5, the data processor 10 controls the scanning recognition camera 12 to start and scan, when the person's two-dimensional code no longer scans the fixed area scanned by the recognition camera 12, the scanning recognition camera 12 will send the unscanned information to the data processor 10, the data processor 10 sends the instruction to the programmable PLC9, the programmable PLC9 control program starts, and the second motor 18 and the first motor 7 are started.

[0040] The use process of the present invention is as follows: when using the present invention, when a person approaches the identifier housing 1 at a certain distance, the infrared sensor 5 senses that the person is approaching, and then sends an electrical signal to the data processor 10 through the infrared sensor 5. The data processor 10 controls the scanning and recognition camera 12 to start and scan. After the scanning and recognition camera 12 scans the QR code, the omnidirectional scanning alignment mechanism is no longer started. When the person's QR code no longer scans the fixed area scanned by the recognition camera 12, the scanning and recognition camera 12 will send the unscanned information to the data processor 10. The data processor 10 sends the instruction to the programmable PLC9, and the programmable PLC9 control program starts. At this time, the second motor 18 is started, and the second motor 18 starts and drives The fourth connecting rod 25 rotates, the fourth connecting rod 25 rotates and drives the second connecting plate 24 to rotate, the second connecting plate 24 rotates and drives the third connecting rod 23 to rotate, the third connecting rod 23 rotates and drives the pulley bracket 32 ​​to rotate, because the pulleys 31 at the top and bottom of the pulley bracket 32 ​​are limited by the slide rail 26, the slide rail 26 is fixed to the second connecting shell 19, and one side of the second connecting shell 19 is connected to the support block 16 through a bearing, so that when the third connecting rod 23 drives the pulley bracket 32 ​​to make a circular motion around the fourth connecting rod 25, the pulleys 31 at the top and bottom of the pulley bracket 32 ​​will slide on the slide rail 26, and at the same time push the second connecting shell 19 to make a pendulum motion around the support block 16, so that the second connecting shell 19 drives the scanning recognition camera 12 at one end of the cross bar 14 and the support rod 13 to make a pendulum motion. The pendulum motion changes the scanning area of ​​the scanning recognition camera 12. At the same time, when the scanning recognition camera 12 is doing the pendulum motion, it can stop at any position of the pendulum path at any time, which is convenient for searching the QR code in the scanning area. In order to achieve the purpose of buffering, when the second connecting shell 19 rotates, it will drive the cross bar 14 to rotate, and the cross bar 14 rotates and drives the first connecting shell 15 to rotate. When the first connecting shell 15 rotates, it will drive the sliding sleeve 29 to slide on the sliding rod 27. At the same time, the sliding sleeve 29 drives the first connecting rod 20 and the first connecting plate 21 to rotate, and the first connecting plate 21 rotates and rotates around the second connecting rod 22, so that the second spring 30 and the first spring 28 on both sides of the sliding sleeve 29 will switch back and forth between the compression and tension states as the sliding sleeve 29 slides. At the same time, the roller 3 on the inner side of the sliding sleeve 29 5 slides on the slide groove 33 to facilitate the sliding of the sliding sleeve 29, and at the same time starts the first motor 7, the first motor 7 starts and drives the transmission shaft 8 to rotate, the transmission shaft 8 rotates and drives the U-shaped bracket 17 to rotate, the U-shaped bracket 17 is fixedly connected to the fixed shaft 11, and the fixed shaft 11 is fixedly connected to the support block 16. After the U-shaped bracket 17 rotates one circle, the scanning and recognition camera 12 will also rotate one circle with the U-shaped bracket 17, so that the scanning and recognition camera 12 is rotated and driven to any position by the second connecting shell 19, and the scanning and recognition camera 12 rotates one circle again at this position, so that the scanning and recognition camera 12 performs all-round scanning and recognition, and improves the scanning efficiency of the two-dimensional code. In order to prevent the line of the scanning and recognition camera 12 from being stirred, after the U-shaped bracket 17 rotates one circle,The first motor 7 will be controlled to reverse to prevent the line from breaking.

[0041] The above is only a preferred embodiment of the present invention. Any person skilled in the art may modify the present invention by using the above technical solution or modify it into an equivalent technical solution. Therefore, any simple modification or equivalent replacement made according to the technical solution of the present invention shall fall within the scope of protection claimed by the present invention.

Claims

1. A high-precision automatic alignment two-dimensional code scanning identifier, comprising an identifier housing (1), characterized in that: An omnidirectional scanning and alignment mechanism is provided inside the identifier housing (1); The omni-directional scanning alignment mechanism comprises a cross support plate (6), the cross support plate (6) is fixedly arranged inside the identifier housing (1), one side of the cross support plate (6) is fixedly connected to a first motor (7), an output end of the first motor (7) is fixedly connected to a transmission shaft (8), the transmission shaft (8) passes through the cross support plate (6) and is connected to the cross support plate (6) via a bearing, one end of the transmission shaft (8) is fixedly connected to a U-shaped bracket (17), one side of the U-shaped bracket (17) is fixedly connected to a fixed shaft (11), one end of the fixed shaft (11) is fixedly connected to a support block (16), one side of the support block (16) is connected to a second connection shell (19) via a bearing, the other side of the support block (16) is connected to a first connection shell (15) via a bearing, a cross bar (14) is fixedly connected between the first connection shell (15) and the second connection shell (19), one side of the cross bar (14) is fixedly connected to A support rod (13), one end of which is fixedly connected to a scanning recognition camera (12); a pulley bracket (32) is provided inside the second connection shell (19); the top and bottom of the pulley bracket (32) are both connected to pulleys (31) via bearings; a slide rail (26) is fixedly embedded in the top and bottom of the second connection shell (19); the slide rail (26) is in contact with the pulley (31); one side of the pulley bracket (32) is connected to a third connecting rod (23) via a bearing; one end of the third connecting rod (23) is connected to a second connecting plate (24) via a bearing; the other side of the second connecting plate (24) is fixedly connected to a fourth connecting rod (25); the fourth connecting rod (25) passes through the U-shaped bracket (17) and is connected to the U-shaped bracket (17) via a bearing; a second motor (18) is fixedly provided on one side of the U-shaped bracket (17); the output end of the second motor (18) is fixedly connected to the fourth connecting rod (25).

2. The high-precision automatic alignment two-dimensional code scanning and recognition device according to claim 1, characterized in that: A buffer assembly is provided on one side of the first connecting shell (15), and the buffer assembly includes a slide rod (27), the slide rod (27) is fixedly arranged inside the first connecting shell (15), the slide rod (27) is sleeved with a slide sleeve (29) on the outside, one side of the slide sleeve (29) is fixedly connected with a first spring (28), the first spring (28) is sleeved on the outside of the slide rod (27), one end of the first spring (28) is fixedly connected to the side wall of the first connecting shell (15), one side of the slide sleeve (29) is connected to a first connecting rod (20) through a bearing, one side of the first connecting rod (20) is connected to a first connecting plate (21) through a bearing, one side of the first connecting plate (21) is connected to a second connecting rod (22) through a bearing, and one end of the second connecting rod (22) is connected to the side wall of the U-shaped bracket (17) through a bearing.

3. The high-precision automatic alignment two-dimensional code scanning and recognition device according to claim 2, characterized in that: A second spring (30) is fixedly connected to the other side of the sliding sleeve (29); the second spring (30) is sleeved outside the first spring (28); and the other end of the second spring (30) is fixedly connected to the side wall of the first connecting shell (15).

4. The high-precision automatic alignment two-dimensional code scanning and recognition device according to claim 3, characterized in that: The top and bottom of the slide bar (27) are both provided with a slide groove (33), the inner side of the slide sleeve (29) is provided with two side grooves, the two side grooves are respectively provided at the top and bottom of the slide bar (27), two connecting rods (34) are fixedly provided inside the side grooves, the outsides of the two connecting rods (34) are both connected with rollers (35) through bearings, and the two rollers (35) are both in contact with the slide groove (33).

5. The high-precision automatic alignment two-dimensional code scanning and recognition device according to claim 1, characterized in that: A transparent cover plate (2) is fixedly embedded on one side of the identifier housing (1).

6. The high-precision automatic alignment two-dimensional code scanning and recognition device according to claim 1, characterized in that: A fixing rod (3) is fixedly connected to the bottom of the identifier housing (1), and a base (4) is fixedly provided at the bottom of the fixing rod (3).

7. The high-precision automatic alignment two-dimensional code scanning and recognition device according to claim 1, characterized in that: An infrared sensor (5) is embedded on one side of the identifier housing (1).

8. The high-precision automatic alignment two-dimensional code scanning and recognition device according to claim 7, characterized in that: A programmable PLC (9) and a data processor (10) are fixedly disposed on the inner side of the identifier housing (1).

9. The high-precision automatic alignment two-dimensional code scanning and recognition device according to claim 8, characterized in that: The input end of the programmable PLC (9) is provided with an A / D converter, the data processor (10) is electrically connected to the A / D converter, and the data processor (10) is electrically connected to the infrared sensor (5) and the scanning recognition camera (12).

10. The high-precision automatic alignment two-dimensional code scanning and recognition device according to claim 8, characterized in that: The output end of the programmable PLC (9) is provided with a D / A converter, and the first motor (7) and the second motor (18) are both electrically connected to the D / A converter.

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