Weighing and code spraying device for packaging food

Abstract

The utility model relates to a weighing and code spraying device for packaging food. The device comprises a control unit, and a photoelectric sensing assembly, a drainage unit, a weighing unit, an excluding unit and a code spraying unit which are in communication connection with the control unit, the drainage unit, the weighing unit, the excluding unit and the code spraying unit are sequentially arranged from left to right, and the upper surfaces of the drainage unit, the weighing unit, the excluding unit and the code spraying unit are flush. The gap between the adjacent units is smaller than the width of target packaged food obtained in advance, and the photoelectric sensing assembly is fixedly connected to the end, close to the weighing unit, of the drainage unit. Compared with the prior art, the device has the advantages of feeding back difference information of each packaged food, improving timeliness and effectiveness of information transmission, improving production efficiency and the like.

Description

Technical Field

[0001] The utility model relates to the technical field of food detection and packaging, in particular to a weighing and coding device for packaging food. Background Art

[0002] During the food inspection and packaging process, the re-inspection machine measures the product weight in real time and compares it with the preset qualified products. The qualified products will continue to flow to the next process, and the unqualified products will be rejected. Then the inkjet printer will spray the code on the product packaging.

[0003] A search revealed Chinese patent CN112340149A, which discloses an intelligent automated weighing and coding device for food packaging. The device comprises a sequentially connected conveyor guide, a weighing unit, and a coding unit. The conveyor guide includes a guide plate, a conveyor belt, and other structures, enabling adjustment of the spacing of packaged foods. The weighing unit uses gravity to measure food quality and selects qualified packaged foods for further conveyance. The coding unit uniformly codes all qualified packaged products. However, this device still suffers from the following issues:

[0004] 1. The coding part works independently and only codes the product packaging according to the set fixed weight information, and cannot feedback the different information of each packaged food;

[0005] 2. There is a height difference between the transmission guide part and the weighing part, which easily leads to instability during the transmission process and reduces the accuracy of weighing;

[0006] 3. When packaged food that does not meet quality requirements is detected, it is removed manually, which is inefficient. Utility Model Content

[0007] The purpose of the present invention is to overcome the defects of the above-mentioned prior art and provide a weighing and coding device for packaged food, which can achieve one or all of the following purposes: feedback of differential information of each packaged food, improvement of weighing accuracy and improvement of work efficiency.

[0008] The purpose of the utility model can be achieved through the following technical solutions:

[0009] The utility model provides a weighing and coding device for packaged food, comprising a control unit and a photoelectric sensor assembly, a drainage unit, a weighing unit, an exclusion unit and a coding unit respectively connected to the control unit for communication, wherein the drainage unit, the weighing unit, the exclusion unit and the coding unit are placed in sequence from left to right and their upper surfaces are flush, and the gap between adjacent units is smaller than the width of the target packaged food obtained in advance, and the photoelectric sensor assembly is fixedly connected to one end of the drainage unit close to the weighing unit; the drainage unit is used to space multiple target packaged foods; the weighing unit is used to obtain quality information of the target packaged food and feed it back to the control unit; the control unit is used to generate coding information based on the received quality information, and synchronously send out an exclusion instruction signal and a coding instruction signal; the exclusion unit is used to exclude target packaged foods that do not meet the quality standards according to the exclusion instruction signal; and the coding unit is used to spray the coding information on the corresponding packaging according to the coding instruction signal.

[0010] As a preferred technical solution, the device also includes a transition component, there is a first gap between the drainage unit and the weighing unit, the transition component is located in the first gap, the transition component is connected to the input end of the weighing unit, and the upper surface is flush with the weighing unit.

[0011] As a preferred technical solution, the drainage unit includes a first support mechanism, a first motor, a telescopic limiting mechanism, a first conveyor belt, a first driving shaft and a first driven shaft. The first motor is fixedly connected to the side wall of the first support mechanism and is driven by the first driving shaft. The telescopic limiting mechanism is fixedly connected to both sides of the first conveyor belt. The first driving shaft and the first driven shaft are respectively located at the two ends of the first conveyor belt, and jointly drive the first conveyor belt to rotate.

[0012] As a preferred technical solution, the weighing unit includes a second supporting mechanism, a second motor, a weighing sensor, a second conveyor belt, a second driving shaft and a second driven shaft. The second motor is fixedly connected to the side wall of the second supporting mechanism and is drivingly connected to the second driving shaft. The weighing sensor is fixedly connected to the second supporting mechanism and is located below the second conveyor belt. The second driving shaft and the second driven shaft are respectively located at both ends of the second conveyor belt, and jointly drive the second conveyor belt to rotate.

[0013] As a preferred technical solution, the exclusion unit includes a third support mechanism, a third motor, an exclusion mechanism, a third conveyor belt, a third driving shaft and a third driven shaft. The third motor is fixedly connected to the side wall of the third support mechanism and is drivingly connected to the third driving shaft. The exclusion mechanism is fixedly connected to one side of the third support mechanism. The third driving shaft and the third driven shaft are respectively located at both ends of the third conveyor belt, and jointly drive the third conveyor belt to rotate.

[0014] As a preferred technical solution, the exclusion mechanism is one of an air blowing exclusion mechanism, a swing arm exclusion mechanism, a push rod exclusion mechanism, and a falling exclusion mechanism.

[0015] As a preferred technical solution, the removal unit further includes a waste box, which is fixedly connected to one side of the third supporting mechanism and is arranged opposite to the removal mechanism.

[0016] As a preferred technical solution, the coding unit includes a fourth support mechanism, a fourth motor, a coding mechanism, a fourth conveyor belt, a fourth driving shaft and a fourth driven shaft. The fourth motor is fixedly connected to the side wall of the fourth support mechanism and is drivingly connected to the fourth driving shaft. The coding mechanism is fixedly connected to one side of the fourth support mechanism. The fourth driving shaft and the fourth driven shaft are respectively located at both ends of the fourth conveyor belt, and jointly drive the fourth conveyor belt to rotate.

[0017] As a preferred technical solution, the coding mechanism includes a lifting component and a coding terminal. The lifting component is fixedly connected to one side of the fourth supporting mechanism. The coding terminal is connected to the lifting component and is located above the target packaged food.

[0018] As a preferred technical solution, the control unit includes a fifth support mechanism, an alarm light, a display screen and an electrical box. The electrical box is fixed above the fifth support mechanism. The display screen is set at the end of the electrical box away from the ground. The alarm light is fixedly connected to one side of the electrical box. The electrical box includes a processor inside.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] 1. The utility model adopts a control unit to uniformly control the drainage unit, weighing unit, exclusion unit and coding unit. After the control unit receives the quality information from the weighing unit, the control unit determines whether the corresponding packaged food is qualified according to the quality information, and sends an exclusion instruction signal to the exclusion unit and sends corresponding coding information and coding instruction signal to the coding unit. The exclusion unit excludes unqualified packaged food according to the exclusion instruction signal, and the coding unit sprays the coding information on the corresponding package according to the coding instruction signal. Therefore, the control unit enables the weighing unit and the coding unit to work together in real time. The coding unit does not only spray code according to the set fixed weight information, but sprays code on the food package according to the actual and accurate quality information. It can accurately output and record the weight information of each packaged food and feedback the difference information of each packaged food, and improve the timeliness and effectiveness of information transmission, avoid intermediate links, save production costs, and improve production efficiency.

[0021] 2. In the present invention, the drainage unit, weighing unit, discharge unit, and inkjet printer unit are placed in sequence from left to right, and their upper surfaces are flush. A transition component is provided in the gap between the drainage unit and the weighing unit, and the transition component is connected to the input end of the weighing unit. The upper surfaces of the drainage unit, weighing unit, and transition component are flush. This structural arrangement enables the target packaged food to pass through the gap smoothly after entering the weighing inkjet printer, avoiding weighing errors caused by height differences or inappropriate gap widths.

[0022] 3. In the present invention, the exclusion unit can timely exclude target packaged foods that do not meet quality standards according to the exclusion instruction signal from the control unit, and use the waste box arranged opposite to the exclusion mechanism to collect unqualified products, which can effectively reduce labor costs and improve work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic diagram of the overall structure of the device provided in Example 1 of the present utility model;

[0024] Figure 2 This is a schematic structural diagram of the drainage unit and weighing unit of the device provided in Example 1 of the present utility model;

[0025] Figure 3 This is a schematic diagram of the structure of the exclusion unit of the device provided in Example 1 of the utility model;

[0026] Figure 4 This is a schematic diagram of the structure of the coding unit of the device provided in Example 1 of the present utility model;

[0027] Among them: 1. control unit; 2. photoelectric sensor component; 3. drainage unit; 4. weighing unit; 5. elimination unit; 6. inkjet printer unit; 7. first frame; 11. electrical box; 12. display screen; 13. alarm light; 21. photoelectric sensor; 31. first motor; 32. telescopic limit mechanism; 33. first conveyor belt; 34. first driving shaft; 35. first driven shaft; 41. second motor; 42. weighing sensor; 43. second conveyor belt; 44. second driving shaft; 45. second driven shaft; 51. second frame; 52. third motor; 53. elimination mechanism; 54. third conveyor belt; 55. third driving shaft; 56. third driven shaft; 57. waste box; 61. third frame; 62. fourth motor; 63. inkjet printer mechanism; 64. fourth conveyor belt; 65. fourth driving shaft; 66. fourth driven shaft; 631. lifting component; 632. inkjet printer terminal. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of the present invention.

[0029] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer" and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the utility model product is typically placed when in use. These terms are intended solely to facilitate the description of this utility model and simplify the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but rather that it may be slightly tilted.

[0030] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. Throughout the description of this application, "plurality" means two or more, unless otherwise specifically defined.

[0031] Example 1:

[0032] This embodiment provides a weighing and coding device for packaging food. Figure 1As shown, the device includes a control unit 1 and a photoelectric sensor assembly 2, a drainage unit 3, a weighing unit 4, a rejection unit 5, and a coding unit 6, which are respectively communicatively connected to the control unit 1. The drainage unit 3, the weighing unit 4, the rejection unit 5, and the coding unit 6 are arranged in sequence from left to right with their upper surfaces flush. The gap between adjacent units is less than the pre-acquired width of the target packaged food. The photoelectric sensor assembly 2 is fixedly connected to the end of the drainage unit 3 near the weighing unit 4. Specifically, the drainage unit 3 is used to separate multiple target packaged foods; the weighing unit 4 is used to obtain quality information of the target packaged foods and feed it back to the control unit 1; the control unit 1 is used to generate coding information based on the received quality information and simultaneously issue a rejection instruction signal and a coding instruction signal; the rejection unit 5 is used to exclude target packaged foods that do not meet quality standards based on the rejection instruction signal; and the coding unit 6 is used to spray the coding information on the corresponding packaging based on the coding instruction signal.

[0033] like Figure 1 and Figure 2 As shown, in this embodiment, the drainage unit 3, the weighing unit 4, and the control unit 1 collectively function as a weight checker and are all fixed to the first frame 7. The first support mechanism, the second support mechanism, and the fifth support mechanism are integrated into the same support mechanism, which can save floor space. In other embodiments, the various support mechanisms can be provided separately to increase the flexibility of the entire device.

[0034] In the control unit 1, an electrical box 11 is fixed above the first frame 7. A display screen 12 is provided at the end of the electrical box 11 that is away from the ground. An alarm light 13 is fixedly connected to one side of the electrical box 11. The electrical box 11 includes an integrated processor. This processor includes a weighing and analysis module that receives quality information transmitted by the weighing unit 4 and analyzes the final inkjet printing information of the corresponding target packaged food according to a preset program to determine whether it meets quality requirements.

[0035] The photoelectric sensing assembly 2 includes symmetrically arranged fixings and photoelectric sensors 21. Each photoelectric sensor 21 is connected to one end of the drainage unit 3 near the weighing unit 4 via a corresponding fixing. Its sensing range includes the portion of the target packaged food within the drainage unit 3 and the weighing unit 4. When the target packaged food enters the weighing unit 4 from the drainage unit 3, the photoelectric sensor 21 is triggered, sending a sensing signal to the processor of the control unit 1, alerting the processor that the target packaged food has begun entering the weighing unit 4.

[0036] The drainage unit 3 comprises a first motor 31, a telescopic limiting mechanism 32, a first conveyor belt 33, a first driving shaft 34, and a first driven shaft 35. The first motor 31 is fixedly connected to the side wall of the first frame 7 near the input end of the drainage unit 3 and is drivingly connected to the first driving shaft 34. The telescopic limiting mechanism 32 is fixedly connected to both sides of the first conveyor belt 33. The first driving shaft 34 is located at the input end of the first conveyor belt 33, and the first driven shaft 35 is located at the output end of the first conveyor belt 33, near the input end of the weighing unit 4. The first motor 31 drives the first driving shaft 34 to rotate, which in turn drives the first driven shaft 35, which in turn drives the first conveyor belt 33. The target packaged food flows into the first conveyor belt 33 from the input end where the first driving shaft 34 is located. As the first conveyor belt 33 moves forward, the telescopic limiting mechanism 32 (which limits the stability of the posture of the object during passage) pre-adjusts the passage width to the width of the food package, ensuring that the target packaged food passes through the center of the drainage unit 3.

[0037] Weighing unit 4 includes a second motor 41, a load cell 42, a second conveyor belt 43, a second driving shaft 44, and a second driven shaft 45. The second motor 41 is fixedly connected to the side wall of the first frame 7 near the output end of the weighing unit 4 and is drivingly connected to the second driving shaft 44. The load cell 42 is fixedly connected to the first frame 7 and located below the second conveyor belt 43. The second driving shaft 44 is located at the output end of the second conveyor belt 43. The second driven shaft 45 is located at the input end of the second conveyor belt 43, near the output end of the drainage unit 3. The second motor 41 drives the second driving shaft 44 to rotate, which in turn drives the second driven shaft 45 to rotate, and together drives the second conveyor belt 43 to rotate, continuing to transport the target packaged food that has been weighed and analyzed. When the target packaged food enters second conveyor belt 43 from the output end of drainage unit 3, weighing sensor 42 acquires mass information at multiple time points on second conveyor belt 43 and transmits it to control unit 1. The weighing analysis module in the processor analyzes the final coding information through a preset program, determines whether it meets quality requirements, generates corresponding command signals, and transmits them to rejection unit 5 and coding unit 6, respectively. In actual application, the range of weighing unit 4 can be selected according to actual needs, and the optional ranges include: 0-600g, 0-2kg, 0-5kg, 0-10kg, 0-20kg, and 0-50kg.

[0038] like Figure 3As shown, the rejection unit 5 comprises a second frame 51 (i.e., a third support mechanism), a third motor 52, a rejection mechanism 53, a third conveyor belt 54, a third driving shaft 55, a third driven shaft 56, and a waste bin 57. The third motor 52 is fixedly connected to the side wall of the second frame 51 near the input end of the rejection unit 5 and is drivingly connected to the third driving shaft 55. The rejection mechanism 53 is fixedly connected to a side of the second frame 51. The third driving shaft 55 is located at the input end of the third conveyor belt 54, and the third driven shaft 56 is located at the output end of the third conveyor belt 54. The third motor 52 drives the third driving shaft 55 to rotate, which in turn drives the third driven shaft 56, which in turn drives the third conveyor belt 54 to continue transporting qualified packaged food. The waste bin 57 is fixedly connected to a side of the second frame 51 and is located opposite the rejection mechanism 53. The rejection mechanism 53 removes unqualified packaged food and transfers it to the waste bin 57, eliminating manual removal, effectively reducing labor costs and improving work efficiency.

[0039] In some examples, the exclusion mechanism 53 is one of an air blowing exclusion mechanism, a swing arm exclusion mechanism, a push rod exclusion mechanism, and a drop exclusion mechanism.

[0040] like Figure 4 As shown, the inkjet printing unit 6 includes a third frame 61, a fourth motor 62, an inkjet printing mechanism 63, a fourth conveyor belt 64, a fourth driving shaft 65, and a fourth driven shaft 66. The fourth motor 62 is fixedly connected to the side wall of the third frame 61 near the input end of the inkjet printing unit 6 and is drivingly connected to the fourth driving shaft 65. The inkjet printing mechanism 63 is fixedly connected to one side of the third frame 61. The fourth driving shaft 65 is located at the input end of the fourth conveyor belt 64, and the fourth driven shaft 66 is located at the end of the fourth conveyor belt 64. The fourth motor 62 drives the fourth driving shaft 65 to rotate, which in turn drives the fourth driven shaft 66, which in turn drives the fourth conveyor belt 64. Specifically, the inkjet printing mechanism 63 includes a lifting assembly 631 and a nozzle jack 632. The lifting assembly 631 is fixedly connected to one side of the fourth motor 62. The nozzle jack 632 is connected to the lifting assembly 631 and is located above the target packaged food. Due to its connection to the lifting assembly 631, the nozzle jack 632 can be adjusted to the desired height according to the product.

[0041] In some embodiments, a gap of about 2 mm is maintained between the exclusion unit 5 and the weighing unit 4, the first frame 7 and the second frame 51 are fixedly connected by a locking device, and the second frame 51 and the third frame 61 are fixedly connected by a locking device, thereby preventing the entire device from moving during operation.

[0042] The working principle of the weighing coding device provided in this embodiment is as follows:

[0043] The diversion unit 3 pulls the target packaged food entering the first conveyor belt 33 a certain distance apart to meet the requirement of the weighing unit 4 to keep only one target packaged food on the second conveyor belt 43 for a certain period of time; the target packaged food passes the photoelectric sensor 21, which sends a signal to the control unit 1. The control unit 1 accordingly sends a weighing instruction signal to the weighing unit 4. After the weighing unit 4 receives the signal, the weighing sensor 42 obtains the quality information at different time points and sends the perception information to the control unit 1. The processor in the control unit 1 begins to calculate the final weight of the target packaged food and analyzes whether the target packaged food meets the pre-set qualified weight range:

[0044] When the target packaged food's weight falls within the acceptable range, it flows through rejection unit 5 (with rejection mechanism 53 inactive) and reaches coding unit 6. Control unit 1 transmits the calculated final coding information to coding mechanism 63 and simultaneously sends a coding instruction signal. Based on this coding instruction signal, when the qualified packaged food passes under coding terminal 632, coding mechanism 63 prints the final coding information on the outer packaging bag of the qualified packaged food. In practice, the coding information includes not only accurate real-time quality information but also customized information such as identification information and date.

[0045] When the weight of the target packaged food is within the range of unqualified products, when it flows to the rejection unit 5, the rejection mechanism 53 takes action to push the unqualified packaged food into the waste box 57.

[0046] In summary, the photoelectric sensor component 2, drainage unit 3, weighing unit 4, exclusion unit 5 and inkjet unit 6 are uniformly powered and controlled by the electrical box 11 of the control unit 1. The drainage unit 3, weighing unit 4 and exclusion unit 5 run at the same speed, which can ensure the real-time action and smooth connection of each unit, and effectively improve work efficiency.

[0047] Example 2:

[0048] The structure of the weighing and coding device provided in this embodiment is basically the same as that of the device in Example 1. The difference between the two is that the device provided in this embodiment further includes a transition plate (ie, a transition component).

[0049] A first gap is defined between the drainage unit and the weighing unit. The transition plate is located within this gap, with its upper surface flush with the weighing unit. This means the transition plate is flush with the upper surfaces of the drainage unit, weighing unit, removal unit, and inkjet unit. A movable slot is defined within the transition plate, and a connector is provided at the input end of the weighing unit (i.e., the end closest to the drainage unit's output). This connector engages within the movable slot, enabling the transition plate to move within the first gap, either away from or toward the drainage unit. This displacement can be adjusted based on the size of the packaged food, improving the stability of packaged food transportation and avoiding quality fluctuations caused by height differences and inappropriate gaps between the drainage unit and the weighing unit, thereby improving weighing accuracy.

[0050] The above describes in detail the preferred embodiments of the present invention. It should be understood that those skilled in the art can make numerous modifications and variations based on the concepts of the present invention without inventive effort. Therefore, any technical solutions that can be derived by those skilled in the art based on the concepts of the present invention through logical analysis, reasoning, or limited experimentation based on the existing technology should be within the scope of protection defined by the claims.

Claims

1. A weighing and coding device for packaged food, characterized in that: The device comprises a control unit and a photoelectric sensor assembly, a drainage unit, a weighing unit, an exclusion unit, and a coding unit, each of which is communicatively connected to the control unit. The drainage unit, the weighing unit, the exclusion unit, and the coding unit are placed in sequence from left to right with their upper surfaces flush, and the gap between adjacent units is less than the pre-obtained width of the target packaged food. The photoelectric sensor assembly is fixedly connected to one end of the drainage unit near the weighing unit. The drainage unit is used to separate the multiple target packaged foods; The weighing unit is used to obtain the quality information of the target packaged food and feed it back to the control unit; The control unit is used to generate coding information based on the received quality information and synchronously send out an exclusion instruction signal and a coding instruction signal; The exclusion unit is used to exclude target packaged food with unqualified quality according to the exclusion instruction signal; The coding unit is used to spray the coding information on the corresponding package according to the coding instruction signal.

2. The weighing and coding device for packaged food according to claim 1, characterized in that: The device also includes a transition component. There is a first gap between the drainage unit and the weighing unit. The transition component is located in the first gap. The transition component is connected to the input end of the weighing unit, and its upper surface is flush with the weighing unit.

3. The weighing and coding device for packaged food according to claim 1, characterized in that: The drainage unit includes a first supporting mechanism, a first motor, a telescopic limiting mechanism, a first conveyor belt, a first driving shaft and a first driven shaft. The first motor is fixedly connected to the side wall of the first supporting mechanism and is drivingly connected to the first driving shaft. The telescopic limiting mechanism is fixedly connected to both sides of the first conveyor belt. The first driving shaft and the first driven shaft are respectively located at both ends of the first conveyor belt, and jointly drive the first conveyor belt to rotate.

4. The weighing and coding device for packaged food according to claim 1, characterized in that: The weighing unit includes a second supporting mechanism, a second motor, a weighing sensor, a second conveyor belt, a second driving shaft and a second driven shaft. The second motor is fixedly connected to the side wall of the second supporting mechanism and is drivingly connected to the second driving shaft. The weighing sensor is fixedly connected to the second supporting mechanism and is located below the second conveyor belt. The second driving shaft and the second driven shaft are respectively located at both ends of the second conveyor belt, and jointly drive the second conveyor belt to rotate.

5. The weighing and coding device for packaged food according to claim 1, characterized in that: The exclusion unit includes a third supporting mechanism, a third motor, an exclusion mechanism, a third conveyor belt, a third driving shaft and a third driven shaft. The third motor is fixedly connected to the side wall of the third supporting mechanism and is drivingly connected to the third driving shaft. The exclusion mechanism is fixedly connected to one side of the third supporting mechanism. The third driving shaft and the third driven shaft are respectively located at two ends of the third conveyor belt, and jointly drive the third conveyor belt to rotate.

6. The weighing and coding device for packaged food according to claim 5, characterized in that: The exclusion mechanism is one of an air blowing exclusion mechanism, a swing arm exclusion mechanism, a push rod exclusion mechanism, and a falling exclusion mechanism.

7. The weighing and coding device for packaged food according to claim 5, characterized in that: The removal unit also includes a waste box, which is fixedly connected to one side of the third supporting mechanism and is arranged opposite to the removal mechanism.

8. The weighing and coding device for packaged food according to claim 1, characterized in that: The coding unit includes a fourth support mechanism, a fourth motor, a coding mechanism, a fourth conveyor belt, a fourth driving shaft and a fourth driven shaft. The fourth motor is fixedly connected to the side wall of the fourth support mechanism and is drivingly connected to the fourth driving shaft. The coding mechanism is fixedly connected to one side of the fourth support mechanism. The fourth driving shaft and the fourth driven shaft are respectively located at both ends of the fourth conveyor belt, and jointly drive the fourth conveyor belt to rotate.

9. The weighing and coding device for packaged food according to claim 8, characterized in that: The coding mechanism includes a lifting component and a coding terminal. The lifting component is fixedly connected to one side of the fourth supporting mechanism. The coding terminal is connected to the lifting component and is located above the target packaged food.

10. The weighing and coding device for packaged food according to claim 1, characterized in that: The control unit includes a fifth support mechanism, an alarm light, a display screen and an electrical box. The electrical box is fixed above the fifth support mechanism. The display screen is set at the end of the electrical box away from the ground. The alarm light is fixedly connected to one side of the electrical box. The electrical box includes a processor inside.

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