阅读说明：本技术 一种扫码准确度高的除湿型扫码系统 (Sweep dehumidification type that a yard degree of accuracy is high and sweep a yard system ) 是由 齐宽宽 于 2019-09-03 设计创作，主要内容包括：本发明涉及一种扫码准确度高的除湿型扫码系统,包括扫码装置,所述扫码装置包括主体、摄像头和扫码窗,还包括调节机构和除湿机构,调节机构包括驱动组件、距离传感器、传动杆、两个滑动套管、两个滑杆和两个第一弹簧,除湿机构包括动力组件、存取口、干燥箱、盖板、两个输气管、两个滤网、两个固定套管、两个支撑杆和两个第二弹簧,驱动组件包括电机、绕线盘和连接线,动力组件包括抽气缸、活塞块、连接杆和支撑套管,该扫码准确度高的除湿型扫码系统中,通过调节机构可以调节摄像头与条码之间的距离,提高了扫码器扫码的准确度,通过除湿机构可以对主体内部进行除湿,降低了扫码器内部的湿度,降低了扫码器的故障率。(The invention relates to a dehumidification type code scanning system with high code scanning accuracy, which comprises a code scanning device, wherein the code scanning device comprises a main body, a camera, a code scanning window, an adjusting mechanism and a dehumidification mechanism, the adjusting mechanism comprises a driving component, a distance sensor, a transmission rod, two sliding sleeves, two sliding rods and two first springs, the dehumidification mechanism comprises a power component, an access port, a drying box, a cover plate, two gas conveying pipes, two filter screens, two fixed sleeves, two supporting rods and two second springs, the driving component comprises a motor, a wire winding disc and a connecting wire, the power component comprises a pumping cylinder, a piston block, a connecting rod and a supporting sleeve, in the dehumidification type code scanning system with high code scanning accuracy, the distance between the camera and a bar code can be adjusted through the adjusting mechanism, the code scanning accuracy of the code scanning device is improved, the interior of the main body can be dehumidified through the dehumidification mechanism, the humidity inside the code scanner is reduced, and the fault rate of the code scanner is reduced.)

1. A dehumidification type code scanning system with high code scanning accuracy comprises a code scanning device, wherein the code scanning device comprises a main body (6), a camera (12) and a code scanning window (14), the code scanning window (14) is arranged on one side of the main body (6), the camera (12) is arranged inside the main body (6), and the camera (12) is arranged on one side of the code scanning window (14), the dehumidification type code scanning system is characterized by further comprising an adjusting mechanism and a dehumidification mechanism, the adjusting mechanism is arranged inside the main body (6), the camera (12) is connected with the adjusting mechanism, and the dehumidification mechanism is arranged on the main body (6);

the adjusting mechanism comprises a driving assembly, a distance sensor (13), a transmission rod (15), two sliding sleeves (10), two sliding rods (7) and two first springs (8), wherein the sliding rods (7) are perpendicular to a code scanning window (14), the two sliding rods (7) are respectively arranged on two sides of the code scanning window (14), two ends of each sliding rod (7) are fixedly connected with the inner wall of the main body (6), the two sliding rods (7) respectively penetrate through the two sliding sleeves (10), the sliding sleeves (10) are slidably connected with the sliding rods (7), the two first springs (8) are respectively sleeved on the two sliding rods (7), one end, far away from the code scanning window (14), of each sliding rod (7) is fixedly connected with the corresponding sliding sleeve (10) through the first spring (8), the first spring (8) is in a compressed state, the transmission rod (15) is perpendicular to the sliding rods (7), two ends of the transmission rod (15) are respectively fixedly connected with the two sliding sleeves (10), the middle of the transmission rod (15) is fixedly connected with the camera (12), the distance sensor (13) is arranged on one side of the code scanning window (14), the driving assembly is arranged on the inner wall of one side, far away from the code scanning window (14), of the main body (6), and the driving assembly is connected with the transmission rod (15);

the dehumidifying mechanism comprises a power assembly, an access port (20), a drying box (1), a cover plate (19), two air conveying pipes (5), two filter screens (23), two fixing sleeves (22), two support rods (18) and two second springs (21), wherein the power assembly is arranged on the inner wall of one side of a main body (6) far away from a code sweeping window (14), the power assembly is connected with a camera (12), the drying box (1) is fixedly connected with the main body (6), one end of the drying box (1) is connected with the power assembly through one of the air conveying pipes (5), the other end of the drying box (1) is communicated with the inside of the main body (6) through the other air conveying pipe (5), the access port (20) is arranged on one side of the drying box (1), the cover plate (19) covers the access port (20), and the axis of the fixing sleeve (22) is perpendicular to the cover plate (19), two fixed sleeving (22) respectively with the inner wall fixed connection of the both sides of access hole (20), bracing piece (18) and fixed sleeving (22) coaxial setting, fixed sleeving (22) are passed in bracing piece (18), bracing piece (18) and fixed sleeving (22) sliding connection, the one end and apron (19) fixed connection of bracing piece (18), second spring (21) cover is established on bracing piece (18), the other end of bracing piece (18) passes through second spring (21) and fixed sleeving (22) fixed connection, second spring (21) are in compression state, and two filter screens (23) set up respectively in the inside at the both ends that are close to gas-supply pipe (5) of drying cabinet (1), the inner wall sealing connection of filter screen (23) and drying cabinet (1).

2. The dehumidification-type code scanning system with high code scanning accuracy as set forth in claim 1, wherein a PLC is provided inside the main body (6), and the camera (12) and the distance sensor (13) are electrically connected to the PLC.

3. The dehumidification-type code scanning system with high code scanning accuracy according to claim 1, wherein the driving assembly comprises a motor (3), a wire spool (4) and a connecting wire (9), the motor (3) is fixedly connected with the inner wall of one side of the main body (6) far away from the code scanning window (14), the motor (3) is in transmission connection with the wire spool (4), one end of the connecting wire (9) is wound on the periphery of the wire spool (4), and the other end of the connecting wire (9) is fixedly connected with the transmission rod (15).

4. The dehumidification-type code scanning system with high code scanning accuracy as claimed in claim 3, wherein said motor (3) is a servo motor.

5. The dehumidification-type code scanning system with high code scanning accuracy as set forth in claim 3, wherein an annular groove is provided on the outer periphery of the wire spool (4), and the connection wire (9) is wound inside the annular groove.

6. The dehumidification-type code scanning system with high code scanning accuracy according to claim 1, wherein the power assembly comprises a pumping cylinder (2), a piston block (16), a connecting rod (11) and a supporting sleeve (17), the axis of the pumping cylinder (2) is parallel to the sliding rod (7), one end of the pumping cylinder (2) far away from the code scanning window (14) is fixedly connected with the inner wall of the main body (6) far away from one side of the code scanning window (14), the supporting sleeve (17) and the connecting rod (11) are both arranged coaxially with the pumping cylinder (2), the supporting sleeve (17) is installed on one end of the pumping cylinder (2) close to the code scanning window (14), the connecting rod (11) passes through the supporting sleeve (17), the connecting rod (11) is in sliding connection with the supporting sleeve (17), the piston block (16) is arranged inside the pumping cylinder (2), and the piston block (16) is in sealing and sliding connection with the inner wall of the pumping cylinder (2), one end and piston piece (16) fixed connection of connecting rod (11), the other end and camera (12) fixed connection of connecting rod (11), the one end intercommunication of sweeping sign indicating number window (14) is passed through keeping away from of gas-supply pipe (5) and air suction cylinder (2) in drying cabinet (1).

7. The dehumidification-type code scanning system with high code scanning accuracy as set forth in claim 1, wherein said main body (6) is coated with an anticorrosive coating.

8. The dehumidification-type code scanning system with high code scanning accuracy as claimed in claim 1, wherein said sliding rod (7) is coated with grease.

9. The dehumidification-type code scanning system with high code scanning accuracy as set forth in claim 1, wherein the number of said distance sensors (13) is two.

10. The dehumidification-type code scanning system with high code scanning accuracy as recited in claim 1, wherein the code scanning window (14) is made of tempered glass.

Technical Field

The invention relates to the field of code scanning equipment, in particular to a dehumidification type code scanning system with high code scanning accuracy.

Background

A bar code scanner is a machine that reads bar code information. The infrared light source is used, then the chip is used for decoding according to the reflection result, and finally the correct character represented by the bar code is returned.

Disclosure of Invention

The technical problem to be solved by the invention is as follows: in order to overcome the defects of the prior art, the dehumidification type code scanning system with high code scanning accuracy is provided.

The technical scheme adopted by the invention for solving the technical problems is as follows: a dehumidification type code scanning system with high code scanning accuracy comprises a code scanning device, wherein the code scanning device comprises a main body, a camera and a code scanning window, the code scanning window is arranged on one side of the main body, the camera is arranged in the main body, the camera is arranged on one side of the code scanning window, the dehumidification type code scanning system further comprises an adjusting mechanism and a dehumidification mechanism, the adjusting mechanism is arranged in the main body, the camera is connected with the adjusting mechanism, and the dehumidification mechanism is arranged on the main body;

the adjusting mechanism comprises a driving component, a distance sensor, a transmission rod, two sliding sleeves, two sliding rods and two first springs, wherein the sliding rods are perpendicular to the code scanning window, the two sliding rods are respectively arranged at two sides of the code scanning window, two ends of each sliding rod are fixedly connected with the inner wall of the main body, the two sliding rods respectively penetrate through the two sliding sleeves, the sliding sleeves are in sliding connection with the sliding rods, the two first springs are respectively sleeved on the two sliding rods, one ends of the sliding rods, far away from the code scanning window, are fixedly connected with the sliding sleeves through the first springs, the first springs are in a compressed state, the transmission rod is perpendicular to the sliding rods, two ends of the transmission rod are respectively fixedly connected with the two sliding sleeves, the middle part of the transmission rod is fixedly connected with the camera, the distance sensor is arranged at one side of the code scanning window, the driving component is arranged on the inner wall of one side, far away, the driving assembly is connected with the transmission rod;

the dehumidifying mechanism comprises a power assembly, an access port, a drying box, a cover plate, two gas pipes, two filter screens, two fixing sleeves, two support rods and two second springs, the power assembly is arranged on the inner wall of the main body, which is far away from one side of the code scanning window, the power assembly is connected with the camera, the drying box is fixedly connected with the main body, one end of the drying box is connected with the power assembly through one of the gas pipes, the other end of the drying box is communicated with the inside of the main body through the other gas pipe, the access port is arranged on one side of the drying box, the cover plate covers the access port, the axis of the fixing sleeves is perpendicular to the cover plate, the two fixing sleeves are fixedly connected with the inner walls of the two sides of the access port respectively, the support rods are coaxially arranged with the fixing sleeves, the support rods penetrate through the fixing sleeves, and the support rods are connected with the, the one end and the apron fixed connection of bracing piece, the second spring housing is established on the bracing piece, the other end of bracing piece passes through second spring and fixed sleeve fixed connection, the second spring is in compression state, and two filter screens set up respectively in the inside at the both ends of being close to the gas-supply pipe of drying cabinet, the inner wall sealing connection of filter screen and drying cabinet.

Preferably, in order to improve the automation degree of the code scanner, a PLC is provided inside the main body, and both the camera and the distance sensor are electrically connected to the PLC.

Preferably, in order to provide power for the camera, the driving assembly comprises a motor, a wire spool and a connecting wire, the motor is fixedly connected with the inner wall of the side, far away from the code scanning window, of the main body, the motor is in transmission connection with the wire spool, one end of the connecting wire is wound on the periphery of the wire spool, and the other end of the connecting wire is fixedly connected with the transmission rod.

Preferably, in order to improve the accuracy of controlling the moving distance of the camera, the motor is a servo motor.

Preferably, in order to improve stability of connection between the wire spool and the connection wire, an annular groove is formed in an outer periphery of the wire spool, and the connection wire is wound inside the annular groove.

Preferably, in order to circulate the air inside the main body inside the drying box, the power assembly includes a pumping cylinder, a piston block, a connecting rod and a support sleeve, the axial line of the air pumping cylinder is parallel to the sliding rod, one end of the air pumping cylinder, which is far away from the code scanning window, is fixedly connected with the inner wall of one side of the main body, which is far away from the code scanning window, the supporting sleeve and the connecting rod are coaxially arranged with the air pumping cylinder, the supporting sleeve is arranged at one end of the air pumping cylinder close to the code scanning window, the connecting rod passes through the supporting sleeve and is in sliding connection with the supporting sleeve, the piston block is arranged in the pumping cylinder, the piston block is hermetically and slidably connected with the inner wall of the pumping cylinder, one end of the connecting rod is fixedly connected with the piston block, the other end and the camera fixed connection of connecting rod, the drying cabinet passes through the gas-supply pipe and takes out the one end intercommunication of sweeping yard window of keeping away from of cylinder.

Preferably, the body is coated with an anti-corrosive coating in order to extend the service life of the body.

Preferably, the sliding rod is coated with grease in order to improve the smoothness of movement of the sliding sleeve.

Preferably, in order to reduce the failure rate of the code scanner, the number of the distance sensors is two.

Preferably, in order to improve the firmness of the code scanning window, the code scanning window is made of tempered glass.

The dehumidifying code scanning system has the advantages that in the dehumidifying code scanning system with high code scanning accuracy, the distance between the camera and the bar code can be adjusted through the adjusting mechanism, the completion degree of the camera for shooting the bar code is improved, and the code scanning accuracy of the code scanner is improved.

Drawings

The invention is further illustrated with reference to the following figures and examples.

FIG. 1 is a schematic structural diagram of a dehumidification-type code scanning system with high code scanning accuracy according to the present invention;

FIG. 2 is a schematic structural diagram of an adjusting mechanism of the dehumidification-type code scanning system with high code scanning accuracy according to the present invention;

FIG. 3 is a schematic structural diagram of a power assembly of the dehumidification-type code scanning system with high code scanning accuracy according to the present invention;

FIG. 4 is a schematic structural diagram of a dehumidifying mechanism of a dehumidifying-type code-scanning system with high code-scanning accuracy according to the present invention;

in the figure: 1. the automatic cleaning device comprises a drying box, a pumping cylinder, a motor, a wire spool, a gas pipe, a main body, a sliding rod, a first spring, a connecting line, a sliding sleeve, a connecting rod, a camera, a distance sensor, a code sweeping window, a transmission rod, a piston block, a supporting sleeve, a supporting rod, a cover plate, an access opening, a second spring, a fixing sleeve and a filter screen, wherein the drying box comprises 2, a pumping cylinder, 3, a motor, 4, a wire spool, 5, a gas pipe, 6, the main body, 7, the sliding rod, 8, the first spring.

Detailed Description

The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic views illustrating only the basic structure of the present invention in a schematic manner, and thus show only the constitution related to the present invention.

As shown in fig. 1, a dehumidifying code scanning system with high code scanning accuracy comprises a code scanning device, wherein the code scanning device comprises a main body 6, a camera 12 and a code scanning window 14, the code scanning window 14 is arranged on one side of the main body 6, the camera 12 is arranged inside the main body 6, the camera 12 is arranged on one side of the code scanning window 14, the dehumidifying system further comprises an adjusting mechanism and a dehumidifying mechanism, the adjusting mechanism is arranged inside the main body 6, the camera 12 is connected with the adjusting mechanism, and the dehumidifying mechanism is arranged on the main body 6;

the distance between the camera 12 and the bar code can be adjusted through the adjusting mechanism, the completion degree of shooting the bar code by the camera 12 is improved, the bar code scanning accuracy of the code scanner is improved, the inside of the main body 6 can be dehumidified through the dehumidifying mechanism, the humidity inside the code scanner is reduced, and the fault rate of the code scanner is reduced;

as shown in fig. 2, the adjusting mechanism includes a driving assembly, a distance sensor 13, a transmission rod 15, two sliding sleeves 10, two sliding rods 7 and two first springs 8, the sliding rod 7 is perpendicular to the code scanning window 14, the two sliding rods 7 are respectively disposed at two sides of the code scanning window 14, two ends of the sliding rod 7 are both fixedly connected to an inner wall of the main body 6, the two sliding rods 7 respectively penetrate through the two sliding sleeves 10, the sliding sleeves 10 are slidably connected to the sliding rod 7, the two first springs 8 are respectively sleeved on the two sliding rods 7, one end of the sliding rod 7 away from the code scanning window 14 is fixedly connected to the sliding sleeve 10 through the first spring 8, the first spring 8 is in a compressed state, the transmission rod 15 is perpendicular to the sliding rod 7, two ends of the transmission rod 15 are respectively fixedly connected to the two sliding sleeves 10, a middle portion of the transmission rod 15 is fixedly connected to the camera 12, the distance sensor 13 is arranged on one side of the code scanning window 14, the driving component is arranged on the inner wall of one side of the main body 6 far away from the code scanning window 14, and the driving component is connected with the transmission rod 15;

through the supporting effect of the sliding rod 7, the stability of the transmission rod 15 is improved through the sliding sleeve 10, the stability of the camera 12 is improved, the distance between the camera 12 and the code scanning window 14 can be detected through the distance sensor 13, then the distance sensor 13 sends a signal to the PLC, the PLC controls the driving assembly to operate, power is provided through the driving assembly, the transmission rod 15 is pulled to move along the sliding rod 7 in the direction far away from the code scanning window 14, when the pulling force of the driving assembly on the transmission rod 15 is reduced, the first spring 8 drives the connection rod 15 to move in the direction close to the code scanning window 14, the distance between the camera 12 and the bar code is adjusted through the connection rod 15, and the bending integrity of the bar code photographed by the camera 12 is improved;

as shown in fig. 3-4, the dehumidifying mechanism includes a power assembly, an access opening 20, a drying box 1, a cover plate 19, two air pipes 5, two filter screens 23, two fixing sleeves 22, two support rods 18 and two second springs 21, the power assembly is disposed on the inner wall of the main body 6 far away from the side of the code scanning window 14, the power assembly is connected with the camera 12, the drying box 1 is fixedly connected with the main body 6, one end of the drying box 1 is connected with the power assembly through one of the air pipes 5, the other end of the drying box 1 is communicated with the inside of the main body 6 through the other air pipe 5, the access opening 20 is disposed on one side of the drying box 1, the cover plate 19 covers the access opening 20, the axis of the fixing sleeve 22 is perpendicular to the cover plate 19, the two fixing sleeves 22 are respectively fixedly connected with the inner walls of the two sides of the access opening 20, the support rod 18 and the fixing sleeve 22 are coaxially arranged, the support rod 18 penetrates through the fixing sleeve 22, the support rod 18 is in sliding connection with the fixing sleeve 22, one end of the support rod 18 is fixedly connected with the cover plate 19, the second spring 21 is sleeved on the support rod 18, the other end of the support rod 18 is fixedly connected with the fixing sleeve 22 through the second spring 21, the second spring 21 is in a compressed state, the two filter screens 23 are respectively arranged inside two ends, close to the gas pipe 5, of the drying box 1, and the filter screens 23 are in sealing connection with the inner wall of the drying box 1;

through the supporting function of the fixed sleeve 22, the stability of the cover plate 19 is improved through the support rod 18, an operator pulls the cover plate 19 to move towards the direction far away from the drying box 1, so that the access port 20 is opened, the operator can replace the drying agent in the drying box 1, then the operator loosens the cover plate 19, the support rod 18 is driven by the second spring 21 to move towards the inside of the drying box 1 along the fixed sleeve 22, the access port 20 is covered by the cover plate 19, meanwhile, under the isolation function of the filter screen 23, the probability that the drying agent enters the air conveying pipe 5 is reduced, the power assembly is driven by the transmission rod 15 to operate, power is provided through the power assembly, the air in the main body 6 circularly flows in the drying box 1 and the main body 6 through the air conveying pipe 5, the air is dehumidified through the drying agent, and the drying function of the air in the main body 6 is realized, the humidity inside the scanner is reduced.

Preferably, in order to improve the automation degree of the code scanner, a PLC is arranged inside the main body 6, and the camera 12 and the distance sensor 13 are both electrically connected with the PLC;

the PLC programmable logic controller adopts a programmable memory for storing program therein, executing instructions facing users such as logic operation, sequence control, timing, counting and arithmetic operation, and controlling various types of machinery or production processes by digital or analog input/output, and is a computer specially used for industrial control, the hardware structure of the PLC programmable logic controller is basically the same as that of a microcomputer, the PLC programmable logic controller is generally used for processing data and receiving and outputting instructions, central control is realized, and the PLC programmable logic controller controls the operation of a code scanner, so that the automation degree of the code scanner is improved.

As shown in fig. 2, the driving assembly comprises a motor 3, a wire spool 4 and a connecting wire 9, the motor 3 is fixedly connected with the inner wall of the side of the main body 6 far away from the code scanning window 14, the motor 3 is in transmission connection with the wire spool 4, one end of the connecting wire 9 is wound on the periphery of the wire spool 4, and the other end of the connecting wire 9 is fixedly connected with a transmission rod 15;

the motor 3 drives the wire spool 4 to rotate, the wire spool 4 is used for winding and unwinding the connecting wire 9, when the connecting wire 9 is shortened, the connecting wire 9 drives the transmission rod 15 to move towards the direction far away from the code scanning window 14, and when the connecting wire 9 is loosened, the spring 8 drives the transmission rod 15 to move towards the direction close to the code scanning window 14.

Preferably, the motor 3 is a servo motor in order to improve the accuracy of controlling the moving distance of the camera 12.

Preferably, in order to improve the stability of the connection between the wire spool 4 and the connecting wire 9, an annular groove is formed on the outer periphery of the wire spool 4, and the connecting wire 9 is wound inside the annular groove;

through the limiting effect of the annular groove on the connecting wire 9, the probability that the connecting wire 9 falls off from the wire spool 4 is reduced, and the stability of connection between the wire spool 4 and the connecting wire 9 is improved.

As shown in fig. 3, the power assembly includes a pumping cylinder 2, a piston block 16, a connecting rod 11 and a support sleeve 17, the axial line of the air pumping cylinder 2 is parallel to the sliding rod 7, one end of the air pumping cylinder 2 far away from the code scanning window 14 is fixedly connected with the inner wall of one side of the main body 6 far away from the code scanning window 14, the supporting sleeve 17 and the connecting rod 11 are both arranged coaxially with the air extracting cylinder 2, the supporting sleeve 17 is arranged at one end of the air extracting cylinder 2 close to the code scanning window 14, the connecting rod 11 passes through the supporting sleeve 17, the connecting rod 11 is connected with the supporting sleeve 17 in a sliding way, the piston block 16 is arranged inside the pumping cylinder 2, the piston block 16 is connected with the inner wall of the pumping cylinder 2 in a sealing and sliding way, one end of the connecting rod 11 is fixedly connected with the piston block 16, the other end of the connecting rod 11 is fixedly connected with the camera 12, the drying box 1 is communicated with one end of the air pumping cylinder 2, which is far away from the code scanning window 14, through an air conveying pipe 5;

the stability of the connecting rod 11 is improved through the supporting sleeve 17, and then under the transmission action of the connecting rod 11, the piston block 16 is driven to reciprocate in the air suction cylinder 2 through the transmission rod 15, and under the connection action of the air conveying pipe 5, the air in the main body 6 and the drying box 1 circularly flows through the piston block 16, and then the air is dried through the drying agent.

Preferably, in order to prolong the service life of the main body 6, the main body 6 is coated with an anti-corrosion coating;

the corrosion rate of the main body 6 is slowed down by the anti-corrosion coating, and the service life of the main body 6 is prolonged.

Preferably, in order to improve the smoothness of the movement of the sliding sleeve 10, the sliding rod 7 is coated with grease;

the friction between the sliding sleeve 10 and the sliding rod 7 is reduced by the grease, and the smoothness of the movement of the sliding sleeve 10 is improved.

Preferably, in order to reduce the failure rate of the code scanner, the number of the distance sensors 13 is two;

by means of mutual redundancy between the two distance sensors 13, when one distance sensor 13 is damaged, the other distance sensor 13 can support normal operation of the code scanner, and therefore the fault rate of the code scanner is reduced.

Preferably, in order to improve the firmness of the code scanning window 14, the code scanning window 14 is made of tempered glass;

because the toughened glass has better firmness, the firmness of the code scanning window 14 is improved.

Provide power through drive assembly, then realized the distance between camera 12 and the bar code through connecting rod 15 and adjusted, the curved complete degree of the bar code is shot to camera 12 has been improved, through the operation of transfer line 15 drive power assembly, then provide power through power assembly, make the inside air of main part 6 flow at drying cabinet 1 and the 6 inside circulations of main part through gas-supply pipe 5, dehumidify the air through the drier, then realized the drying function to the inside air of main part 6, the inside humidity of bar code scanner has been reduced.

Compared with the prior art, this sweep in the dehumidification type that the sign indicating number degree of accuracy is high and sweep a yard system, can adjust the distance between camera 12 and the bar code through adjustment mechanism, the completion degree that camera 12 shoots the bar code has been improved, the degree of accuracy that the bar code was swept to the bar code scanner has been improved, compare with current adjustment mechanism, this adjustment mechanism simple structure, the quantity of this mechanism fault point has been reduced, the fault rate of this mechanism has been reduced, moreover, can dehumidify 6 inside main parts through dehumidification mechanism, the inside humidity of bar code scanner has been reduced, the fault rate of bar code scanner has been reduced, compare with current dehumidification mechanism, this dehumidification mechanism and adjustment mechanism share same drive assembly, the manufacturing cost of bar code scanner has been reduced.

In light of the foregoing description of the preferred embodiment of the present invention, many modifications and variations will be apparent to those skilled in the art without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.