Automatic two-dimensional code printing equipment capable of avoiding repeated coding

Abstract

The invention relates to the field of coding equipment, in particular to two-dimensional code automatic coding equipment capable of avoiding repeated coding, which comprises a coding machine, a programming controller, an electric rotating shaft, a telescopic rod and the like, the coding machine is fixedly connected with a programming controller; the coding machine is rotationally connected with an electric rotating shaft which is driven by a servo motor; and the electric rotating shaft is movably connected with two telescopic rods. According to the invention, the coding data in the database is regulated and controlled through the programmable controller to adjust the printing program, and then the coding element in the coding machine carries out the coding operation of the two-dimensional code label, so that the coding data in the database is regulated and controlled through the programmable controller to automatically process the two-dimensional code generation and printing task, and the coding efficiency of the two-dimensional code label is improved. The printing content does not need to be manually adjusted, and the production efficiency is remarkably improved; meanwhile, after the two-dimensional code is printed, the two-dimensional code can be archived in the data management library, so that the uniqueness of the two-dimensional code label is ensured, the repeated code condition is avoided, the accuracy of material tracing is improved, and the product quality and the customer satisfaction are improved.

Description

Technical Field

[0001] The present invention relates to the field of coding devices, and in particular to a two-dimensional code automatic coding device that avoids repeated coding. Background Art

[0002] In order to ensure the traceability of materials, for example, the PCB board of a charger is bound one-to-one with the paper process code of the shell. Currently, the method of manually supplementing the printing of two-dimensional codes is usually adopted. However, this method has the following problems: When manually printing two-dimensional codes, the situation of repeated coding is likely to occur, resulting in the failure of product traceability; when manually coding, the problem of inaccurate label position is likely to occur, resulting in the label being unable to be used normally, increasing the waste rate and cost.

[0003] In addition, when printing two-dimensional code labels through existing label printing devices, a winding roller is usually arranged on the front side of the label outlet to wind the printed labels; but when different two-dimensional code labels need to be printed, the printing device will cut and separate two groups of different labels. At this time, workers need to remove the label paper on the winding roller and then reinstall the newly printed label paper on the winding roller to carry out the subsequent winding work, which is rather troublesome and affects the continuous printing of the device. And if a collection box is placed in front of the printing device to automatically support and collect the cut label paper, this automatic support and collection method by the collection box can only collect label paper of a certain length. If the label paper is too long, the label paper will be stacked disorderly in the collection box, resulting in additional time for subsequent workers to sort it out. Summary of the Invention

[0004] In order to overcome the drawback that when printing different two-dimensional code labels with existing label printing devices, the printing device will cut and separate two groups of different labels. At this time, workers need to remove the label paper on the winding roller and then reinstall the newly printed label paper on the winding roller to carry out the subsequent winding work, which is rather troublesome and affects the continuous printing of the device, the present invention provides a two-dimensional code automatic coding device that avoids repeated coding.

[0005] The technical implementation scheme of the present invention is: a two-dimensional code automatic coding device that avoids repeated coding, including a coding machine and a programming controller; the coding machine is fixedly connected to the programming controller; it also includes an electric shaft, a telescopic rod, a sliding rod, a second fixed rod, a toggle roller, a conveying roller, a shearing assembly, a tensioning assembly, an adapting assembly and a clamping assembly; the coding machine is rotatably connected to the electric shaft, and the electric shaft is driven by a servo motor; the electric shaft is movably connected to two telescopic rods; each telescopic rod is movably connected to a sliding rod, and the sliding rod is slidably connected to the coding machine; the two sliding rods are commonly connected to a for cutting label paper The coding machine is provided with a clamping area, which is located below the electric rotating shaft; the coding machine is connected with a clamping assembly for clamping the printed label paper, which is located at the clamping area; the electric rotating shaft is connected with a tensioning assembly for tensioning the label paper; the electric rotating shaft is fixed with two second fixed rods; the two second fixed rods are commonly connected with a toggle roller for feeding the label paper into the clamping area; one of the second fixed rods controls the rotation of the toggle roller through a micro motor; a conveying roller is rotatably connected at the discharge port of the coding machine; an adaptation assembly for preventing the toggle roller from damaging the label is connected to the second fixed rod.

[0006] More preferably, the shearing assembly includes a fixed plate, a cutter and a needle; a sliding groove is provided at the discharge port of the coding machine, and the conveying roller is located at the rear side of the sliding groove; two sliding rods are fixedly connected to a fixed plate; the fixed plate slides in the sliding groove; the fixed plate is fixedly connected to a cutter for cutting the label paper; a plurality of needles for making easy-to-break marks on the label paper are arranged in an equidistant linear array on the cutter, and the needles protrude upward from the cutter; and the needles are stored in the sliding groove in the initial state.

[0007] More preferably, the tensioning assembly includes a first fixed rod and a tensioning roller; two first fixed rods are fixedly connected to the front side of the electric rotating shaft; and the two first fixed rods are rotatably connected to the tensioning roller.

[0008] More preferably, the clamping assembly includes an electric slider and a clamping plate; the coding machine is slidably connected to two electric sliders; the two electric sliders are commonly fixed to a clamping plate, and the clamping plate is located in the clamping area.

[0009] More preferably, the adaptation component includes a compression spring and a sliding block; the toggle roller is slidably connected to the second fixed rod; a sliding block is slidably connected in each second fixed rod; a compression spring is fixed between each sliding block and the corresponding second fixed rod; the toggle roller is rotatably connected to the sliding block; a micro motor is fixed to one of the sliding blocks; and the micro motor on the sliding block is fixed to the toggle roller.

[0010] More preferably, the programming controller is connected to an external data management library, and the coding data in the data management library is regulated by the programming controller to automatically process the two-dimensional code generation and printing tasks, without the need to manually adjust the printing content, thereby significantly improving production efficiency.

[0011] More preferably, sponge layers are arranged on the outer sides of the tensioning roller, the driving roller and the conveying roller.

[0012] More preferably, a pressure sensor is provided on the tensioning roller, and the pressure sensor is electrically connected to a servo motor for driving the electric shaft to rotate.

[0013] More preferably, a cover plate is further included; the cover plate is fixedly connected to the front side of the coding machine, and the cover plate is used for dust prevention.

[0014] More preferably, a guide block is further included; a guide groove is formed between the cover plate and the coding machine; a guide block is fixedly connected to the rear side of the cover plate, and the rear side surface of the guide block is inclined toward between the shifting roller and the coding machine.

[0015] Compared with the prior art, the present invention has the following advantages: the coding data in the database is regulated by a programming controller to adjust the printing program, and then the coding operation of the two-dimensional code label is performed by the coding element inside the coding machine. In this way, the coding data in the database is regulated by the programming controller to automatically process the two-dimensional code generation and printing tasks, without the need to manually adjust the printing content, thereby significantly improving the production efficiency; at the same time, after the two-dimensional code is printed out, it will be archived in the data management library to ensure the uniqueness of the two-dimensional code label, prevent the occurrence of duplicate codes and improve the accuracy of material traceability.

[0016] The tensioning roller and the toggle roller are driven to rotate by the electric shaft, so that the label paper discharged in an L-shape is pulled by the tensioning roller and the toggle roller and is tensioned, which is convenient for piercing and cutting; and when the cut label paper is squeezed into the clamping area, the clamping plate is driven by the electric slider to clamp the label head, and this reciprocating process is used to realize the automatic stacking and collection of different QR code labels without manual intervention. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A schematic diagram of the three-dimensional structure of a two-dimensional code automatic coding device for avoiding repeated coding according to the present invention;

[0018] Figure 2 It is a schematic diagram of the three-dimensional structure of the combination of the coding machine, the tensioning roller and the second fixing rod of the present invention;

[0019] Figure 3 It is a cross-sectional view of the coding machine of the present invention;

[0020] Figure 4 is a cross-sectional view of a sliding rod of the present invention;

[0021] Figure 5 It is a schematic diagram of the three-dimensional structure of the electric rotating shaft, the sliding rod, the tensioning roller and the shifting roller combination of the present invention;

[0022] Figure 6This is a diagram showing a normal discharging state of the label paper of the present invention;

[0023] Figure 7 This is a state diagram of the needle piercing the label paper of the present invention;

[0024] Figure 8 It is a cross-sectional view of the cover plate of the present invention.

[0025] Among them, the above-mentioned drawings include the following figure marks: 1-coding machine, 1001-clamping area, 1002-sliding groove, 2-programming controller, 101-electric rotating shaft, 102-telescopic rod, 103-sliding rod, 104-fixed plate, 105-cutter, 106-needle, 107-first fixed rod, 108-tensioning roller, 109-second fixed rod, 201-sliding roller, 202-electric slider, 204-compression spring, 203-clamping plate, 205-sliding block, 206-conveying roller, 207-cover plate, 20701-guide groove, 208-guide block, 555-label paper. DETAILED DESCRIPTION

[0026] First of all, it should be pointed out that in the different described embodiments, the same parts are provided with the same reference numerals or the same component names, wherein the disclosure contained in the entire description can be transferred to the same parts with the same reference numerals or the same component names. Selected positional descriptions in the description, such as top, bottom, lateral, etc., also refer to the directly described and shown figures and are transferred to the new positions in the case of a change in position.

[0027] Example 1

[0028] A two-dimensional code automatic coding device that avoids repeated coding, such as Figures 1-7 As shown, it includes a coding machine 1 and a programming controller 2; the programming controller 2 is fixedly connected to the coding machine 1; and a visual system is arranged at the discharge port of the coding machine 1;

[0029] It also includes an electric shaft 101, a telescopic rod 102, a sliding rod 103, a second fixed rod 109, a toggle roller 201, a conveying roller 206, a shearing assembly, a tensioning assembly, an adapting assembly and a clamping assembly; the front side of the coding machine 1 is rotatably connected to the electric shaft 101, and the electric shaft 101 is driven by a servo motor; the rear side of the electric shaft 101 is hinged with two telescopic rods 102; each telescopic rod 102 is hinged with a sliding rod 103, and the sliding rod 103 is slidably connected to the coding machine 1; the upper sides of the two sliding rods 103 are commonly connected to the shearing assembly; the coding machine 1 A clamping area 1001 is provided, and the clamping area 1001 is located below the electric shaft 101; the coding machine 1 is connected to a clamping assembly, and the clamping assembly is located at the clamping area 1001; the electric shaft 101 is connected to a tensioning assembly; two second fixed rods 109 are fixedly connected to the lower part of the electric shaft 101; the two second fixed rods 109 are commonly connected to a toggle roller 201; one of the second fixed rods 109 controls the rotation of the toggle roller 201 through a micro motor; a conveying roller 206 is rotatably connected at the discharge port of the coding machine 1; and an adaptation assembly is connected to the second fixed rod 109.

[0030] The shearing assembly includes a fixed plate 104, a cutter 105 and a needle 106; a sliding groove 1002 is opened at the discharge port of the coding machine 1, and the conveying roller 206 is located at the rear side of the sliding groove 1002; two sliding rods 103 are fixedly connected to the fixed plate 104; the fixed plate 104 slides in the sliding groove 1002; the fixed plate 104 is fixedly connected to the cutter 105; there are a number of needles 106 in an equidistant linear array on the cutter 105, and the needles 106 protrude upward from the cutter 105; and the needles 106 are stored in the sliding groove 1002 in the initial state.

[0031] The tensioning assembly includes a first fixing rod 107 and a tensioning roller 108 . Two first fixing rods 107 are fixedly connected to the front side of the electric rotating shaft 101 . The two first fixing rods 107 are connected to the tensioning roller 108 for rotation together.

[0032] The clamping assembly includes an electric slider 202 and a clamping plate 203 ; the coding machine 1 is slidably connected to the two electric sliders 202 ; the two electric sliders 202 are commonly fixedly connected to the clamping plate 203 , and the clamping plate 203 is located in the clamping area 1001 .

[0033] The adaptation component includes a compression spring 204 and a sliding block 205; the toggle roller 201 is slidably connected to the second fixed rod 109; a sliding block 205 is slidably connected in each second fixed rod 109; a compression spring 204 is fixedly connected between each sliding block 205 and the corresponding second fixed rod 109; the toggle roller 201 is rotatably connected to the sliding block 205; a micro motor is fixedly connected to one of the sliding blocks 205; the micro motor on the sliding block 205 is fixedly connected to the toggle roller 201.

[0034] The programming controller 2 is connected to an external data management library. The coding data in the data management library is regulated by the programming controller 2 to automatically process the two-dimensional code generation and printing tasks. There is no need to manually adjust the printing content, which significantly improves production efficiency.

[0035] The outer sides of the tension roller 108 , the driving roller 201 and the conveying roller 206 are all provided with sponge layers.

[0036] A pressure sensor is provided on the tension roller 108, and the pressure sensor is electrically connected to a servo motor for driving the electric rotating shaft 101 to rotate.

[0037] The working principle of the above embodiment is as follows:

[0038] First, Figure 1 The side where the cover plate 207 number is located is the front side; before coding, the worker adjusts the coding data in the database through the programming controller 2 to adjust the printing program, and then performs the two-dimensional code label coding operation through the coding element inside the coding machine 1. In this way, the coding data in the database is adjusted by the programming controller 2 to automatically process the two-dimensional code generation and printing tasks, without manually adjusting the printing content, which significantly improves the production efficiency; at the same time, when the two-dimensional code is printed out, it will be archived in the data management library to ensure the uniqueness of the two-dimensional code label, eliminate the occurrence of duplicate codes and improve the accuracy of material traceability.

[0039] During label printing, Figure 3 and Figure 6 As shown in the figure, the label paper 555 in the printing process is sent out from the discharge port of the coding machine 1 through the conveying roller 206, and then the label paper 555 passes through the upper side of the tensioning roller 108 and between the shifting roller 201 and the coding machine 1 in sequence, and is discharged in an L-shaped manner; in the process of the label paper 555 being sent out, as shown in FIG. Figures 4-7As shown: positioning and observation are performed through a visual system (such as an industrial camera, etc., the visual system is a prior art and will not be elaborated in detail) at the discharge port of the coding machine 1. When the blank space between two rows of two-dimensional code labels of the same group on the label paper 555 moves to the upper side of the sliding groove 1002, or the blank space between two groups of different two-dimensional code labels on the label paper 555 moves to the upper side of the sliding groove 1002, the conveying roller 206 stops rotating, and then based on the view from right to left, the electric shaft 101 rotates counterclockwise, driving the telescopic rod 102 to rotate counterclockwise, and then The telescopic rod 102 drives the sliding rod 103 to slide upward in the coding machine 1, and then the sliding rod 103 drives the fixing plate 104, the cutter 105 and the needle 106 to slide upward in the sliding groove 1002, so as to form easy-to-break marks or cut off the blank spaces between the two-dimensional code labels on the label paper 555; it should be noted that in the process of the sliding rod 103 sliding upward, the connection between the telescopic rod 102 and the electric rotating shaft 101 rotates adaptively, and the connection between the telescopic rod 102 and the sliding rod 103 rotates adaptively, and at the same time, the telescopic rod 102 produces an adaptive rotation. When the blank space between the two-dimensional code labels on the label paper 555 is formed with an easy-to-break mark or a cutting operation is performed, the visual system is used for observation. When the visual system detects that the blank space between the two rows of two-dimensional code labels in the same group on the label paper 555 moves to the upper side of the sliding groove 1002, the electric shaft 101 rotates slightly. At this time, only the needle 106 pierces the blank space between the two rows of two-dimensional code labels, and the cutter 105 does not contact the label paper 555, thereby forming an easy-to-break mark between the two rows of two-dimensional code labels, which is convenient for subsequent tearing. Pull; when the visual system detects that the blank space between two groups of different QR code labels on the label paper 555 moves to the upper side of the sliding slot 1002, the electric shaft 101 rotates significantly, so that the needle 106 pierces the blank space between the two groups of different QR code labels, and the telescopic rod 102 drives the sliding rod 103, the fixed plate 104, the cutter 105 and the needle 106 to continue to move upward. At this time, the cutter 105 will contact the blank space between the two groups of different QR code labels and perform a cutting operation, which is convenient for the subsequent collection of different QR code labels.

[0040] Furthermore, when the electric shaft 101 rotates and drives the sliding rod 103, the cutter 105 and the needle 106 to pierce and cut the label paper 555, the electric shaft 101 also drives the first fixing rod 107 and the tensioning roller 108 to move forward, and drives the second fixing rod 109 and the toggle roller 201 to move backward. Figure 6 and Figure 7As shown: During the forward movement of the first fixed rod 107 and the tensioning roller 108 and the backward movement of the second fixed rod 109 and the shifting roller 201, the first fixed rod 107, the tensioning roller 108, the second fixed rod 109 and the shifting roller 201 cooperate to pull the label paper 555, so that the label paper 555 discharged in an L shape is tensioned, which is convenient for the cutter 105 and the needle 106 to pierce and cut the label paper 555; During the backward movement of the second fixed rod 109 and the shifting roller 201, the second fixed rod 109 and the shifting roller 201 squeeze the label paper 555 sent out of the coding machine 1 into the clamping area 1001, and at this time the shifting roller 201 presses the label paper 555 in the clamping area 1001. When only piercing the label paper 555, the rotator on the sliding block 205 will not drive the shifting roller 201 to rotate. When the piercing operation of the label paper 555 is completed, the electric rotating shaft 101 drives the corresponding parts to reset. At this time, the shifting roller 201 moves away from the clamping area 1001, and the label paper 555 is transported normally without restriction; When cutting the label paper 555, on the basis that the shifting roller 201 presses the label paper 555 in the clamping area 1001, the electric slider 202 drives the clamping plate 203 to move upward above the clamping area 1001. At this time, the shifting roller 201 continues to squeeze the label paper 555 into the clamping area 1001. After the label paper 555 is cut, first control the rotator on the sliding block 205 to drive the shifting roller 201 to rotate clockwise, and then transport the cut label paper 555 downward. When the cut position of the label paper 555 reaches the clamping area 1001, the cut position of the label paper 555 will fall between the clamping area 1001 and the clamping plate 203. Then control the electric slider 202 to drive the clamping plate 203 to move downward to clamp the label in the clamping area 1001. Then the electric rotating shaft 101 drives the corresponding parts to reset, the shifting roller 201 moves away from the clamping area 1001, and the conveying roller 206 continues to send the label paper 555 out of the discharge port of the coding machine 1 to between the tensioning roller 108 and the shifting roller 201 and the coding machine 1. In this way, the automatic stacking and collection of different two-dimensional code labels are realized, and no manual intervention is required; As the number of labels clamped in the clamping area 1001 increases, when the shifting roller 201 squeezes the newly cut label towards the clamping area 1001, the shifting roller 201 is restricted by the labels clamped in the clamping area 1001. The shifting roller 201 and the sliding block 205 slide upward on the second fixed rod 109, and the compression spring 204 is compressed and contracted. Thereby, the shifting roller 201 is adaptively adjusted to prevent the shifting roller 201 from being unable to squeeze the subsequent cut label paper 555 into the clamping area 1001, and to prevent the shifting roller 201 from over-squeezing the label paper 555 in the clamping area 1001, resulting in damage to the label paper 555.

[0041] Furthermore, in order to ensure the rotation accuracy of the electric shaft 101 and improve the label printing quality, the electric shaft 101 is driven to rotate by a servo motor, so the electric shaft 101 has a self-locking ability; and when a worker who is not familiar with the coding machine 1 pulls out the label paper 555 that is still being printed, the label paper 555 is easily displaced by being pulled, resulting in subsequent coding tilting, and the label paper 555 is also easily torn or damaged. Therefore, when the worker pulls the label paper 555 that is being printed, the pressure sensor on the tensioning roller 108 will sense a large pressure, and then the electric shaft 10 The servo motor on 1 will receive a signal to release the locking state. Therefore, when the worker pulls out the label paper 555, the tension roller 108 is compressed and drives the electric shaft 101 to rotate counterclockwise, and then drives the sliding rod 103, the cutter 105 and the needle 106 to move up, and automatically cut the label paper 555. In this process, the visual system on the coding machine 1 will monitor and then control the conveying roller 206 to quickly send the blank space between the two rows of two-dimensional code labels on the label paper 555 to the top of the sliding slot 1002, so that the label paper 555 being printed is cut in the blank space between the two rows of two-dimensional code labels, ensuring the integrity of the label paper 555 code, and then through this method, it is prevented that workers who are not familiar with the coding machine 1 will damage the label paper 555 being coded, thereby affecting product quality.

[0042] On the basis of the above technical effects, the present invention also has the following advantages:

[0043] A sponge layer is arranged on the outside of the tensioning roller 108, the stirring roller 201 and the conveying roller 206 to reduce the squeezing force of the tensioning roller 108, the stirring roller 201 and the conveying roller 206 on the label paper 555, and prevent the tensioning roller 108, the stirring roller 201 and the conveying roller 206 from damaging the QR code label on the label paper 555 when conveying the label paper 555.

[0044] Example 2

[0045] On the basis of Example 1, Figure 8 As shown, a cover plate 207 is also included; the cover plate 207 is fixedly connected to the front side of the coding machine 1, and the cover plate 207 is used for dust prevention.

[0046] A guide block 208 is also included; a guide groove 20701 is formed between the cover plate 207 and the coding machine 1; the guide block 208 is fixedly connected to the rear side of the cover plate 207, and the rear side of the guide block 208 is inclined toward between the shifting roller 201 and the coding machine 1.

[0047] The working principle of the above embodiment is as follows:

[0048] In the description of Example 1, when the label paper 555 passes through the upper side of the tensioning roller 108 and the rear side of the toggle roller 201 and is discharged in an L-shape: the discharge of the label paper 555 is guided by the guide groove 20701 and the guide block 208 to ensure that the label paper 555 can smoothly pass through the upper side of the tensioning roller 108 and between the toggle roller 201 and the coding machine 1 every time, so as to avoid affecting the subsequent automatic stacking and collection operation of the label paper 555; and the parts at the discharge port of the coding machine 1 are dust-proofed by the cover plate 207 to prevent the parts such as the tensioning roller 108, the toggle roller 201 and the conveying roller 206 from easily adhering to particulate matter, causing the tensioning roller 108, the toggle roller 201 and the conveying roller 206 to damage the label paper 555 when conveying the label paper 555.

[0049] Those skilled in the art should understand that the above embodiments do not limit the present invention in any form, and any technical solutions obtained by equivalent replacement or equivalent transformation shall fall within the protection scope of the present invention.

Claims

1. A two-dimensional code automatic coding device that avoids repeated coding, characterized in that: The invention comprises a coding machine (1) and a programming controller (2); the coding machine (1) is fixedly connected to the programming controller (2); the coding machine (1) also comprises an electric rotating shaft (101), a telescopic rod (102), a sliding rod (103), a second fixed rod (109), a toggle roller (201), a conveying roller (206), a shearing assembly, a tensioning assembly, an adapting assembly and a clamping assembly; the coding machine (1) is rotatably connected to the electric rotating shaft (101), and the electric rotating shaft (101) is driven by a servo motor; the electric rotating shaft (101) is movably connected to two telescopic rods (102); each telescopic rod (102) is movably connected to a sliding rod (103), and the sliding rod (103) is slidably connected to the coding machine (1); the two sliding rods (103) are commonly connected to a shearing assembly for shearing label paper (555); the coding machine (1) is provided with a clamping area (101) 001), the clamping area (1001) is located below the electric shaft (101); the coding machine (1) is connected to a clamping assembly for clamping the printed label paper (555), and the clamping assembly is located at the clamping area (1001); the electric shaft (101) is connected to a tensioning assembly for tensioning the label paper (555); the electric shaft (101) is fixedly connected to two second fixed rods (109); the two second fixed rods (109) are commonly connected to a toggle roller (201) for feeding the label paper (555) into the clamping area (1001); one of the second fixed rods (109) controls the rotation of the toggle roller (201) through a micro motor; a conveying roller (206) is rotatably connected at the discharge port of the coding machine (1); and an adaptation assembly for preventing the toggle roller (201) from damaging the label is connected to the second fixed rod (109).

2. The automatic two-dimensional code printing device for avoiding repeated coding according to claim 1 is characterized in that: The shearing assembly comprises a fixed plate (104), a cutter (105) and a needle (106); a sliding groove (1002) is provided at the discharge port of the coding machine (1), and a conveying roller (206) is located at the rear side of the sliding groove (1002); two sliding rods (103) are fixedly connected to the fixed plate (104); the fixed plate (104) slides in the sliding groove (1002); the fixed plate (104) is fixedly connected to the cutter (105) for cutting the label paper (555); a plurality of needles (106) for making easy-to-break marks on the label paper (555) are arranged in an equidistant linear array on the cutter (105), and the needles (106) protrude upward from the cutter (105); and in an initial state, the needles (106) are stored in the sliding groove (1002).

3. The automatic two-dimensional code printing device for avoiding repeated coding according to claim 1 is characterized in that: The tensioning assembly comprises a first fixed rod (107) and a tensioning roller (108); the front side of the electric rotating shaft (101) is fixedly connected to the two first fixed rods (107); the two first fixed rods (107) are rotatably connected to the tensioning roller (108).

4. The automatic two-dimensional code printing device for avoiding repeated coding according to claim 1, characterized in that: The clamping assembly comprises an electric slider (202) and a clamping plate (203); the coding machine (1) is slidably connected to the two electric sliders (202); the two electric sliders (202) are commonly fixedly connected to the clamping plate (203), and the clamping plate (203) is located in the clamping area (1001).

5. The automatic two-dimensional code printing device for avoiding repeated coding according to claim 1, characterized in that: The adaptable component comprises a compression spring (204) and a sliding block (205); the toggle roller (201) is slidably connected to the second fixed rod (109); each second fixed rod (109) is slidably connected to a sliding block (205); a compression spring (204) is fixedly connected between each sliding block (205) and the corresponding second fixed rod (109); the toggle roller (201) is rotatably connected to the sliding block (205); a micro motor is fixedly connected to one of the sliding blocks (205); and the micro motor on the sliding block (205) is fixedly connected to the toggle roller (201).

6. The automatic two-dimensional code printing device for avoiding repeated coding according to claim 1, characterized in that: The programming controller (2) is connected to an external data management library, and the coding data in the data management library is regulated by the programming controller (2) to automatically process the two-dimensional code generation and printing tasks, without the need to manually adjust the printing content, thereby significantly improving production efficiency.

7. The automatic two-dimensional code printing device for avoiding repeated coding according to claim 3 is characterized in that: Sponge layers are arranged on the outer sides of the tensioning roller (108), the stirring roller (201) and the conveying roller (206).

8. The automatic two-dimensional code printing device for avoiding repeated coding according to claim 3, characterized in that: A pressure sensor is provided on the tensioning roller (108), and the pressure sensor is electrically connected to a servo motor for driving the electric rotating shaft (101) to rotate.

9. The automatic two-dimensional code printing device for avoiding repeated coding according to claim 1, characterized in that: The coding machine (1) also includes a cover plate (207); the cover plate (207) is fixedly connected to the front side of the coding machine (1), and the cover plate (207) is used for dust prevention.

10. The automatic two-dimensional code printing device for avoiding repeated coding according to claim 9, characterized in that: The invention also comprises a guide block (208); a guide groove (20701) is formed between the cover plate (207) and the coding machine (1); the guide block (208) is fixedly connected to the rear side of the cover plate (207); the rear side surface of the guide block (208) is inclined toward between the shifting roller (201) and the coding machine (1).

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