An automatic fine-adjusting cutting device for sausage packaging

Abstract

The present invention discloses an automatic fine-tuning slitting device for sausage packaging, which belongs to the field of film stretch packaging machines, and comprises a frame plate, wherein the inner wall of the frame plate is provided with a sliding shaft at the lower half, and a plurality of components of cutting knives are sleeved on the sliding shaft, and a scissor fork structure body is provided inside the frame plate at a position above the cutting knives. The present invention can realize that when the packaging film is cut, a micro camera collects a real-time image of the packaging film in real time, and sends the data to a processing unit, and the processing of the processing unit automatically controls the servo to adjust the cutting knives in real time, ensuring that the cutting knives always closely follow the cutting line on the packaging film for precise cutting. This dynamic adjustment mechanism fundamentally avoids the problem of missing product introduction information that may occur in the traditional cutting method. This instant feedback and adjustment mechanism not only reduces the need for manual intervention, but also greatly improves production efficiency and cutting accuracy.

Description

Technical Field

[0001] The invention relates to the field of film stretch packaging machines, and more specifically to an automatic fine-tuning slitting device for sausage packaging. Background Art

[0002] The packaging of products such as sausages is often completed by film stretch packaging machines. The working principle of the film stretch packaging machine is as follows: First, the lower film is heated to a preset temperature to soften the film; then, the preheated film is shaped into the desired shape through a forming mold. Next, the product to be packaged, such as sausages, is manually or automatically filled into the lower film cavity after molding using a dedicated filling mechanism. After that, the upper film is covered on the lower film cavity filled with the product to form a packaging form in which the upper and lower films wrap the product together. Next, the upper and lower films are sent into a vacuum chamber, and the air in the packaging bag is extracted using an exhaust system to create a vacuum environment; then, the heat sealing technology is used to heat-seal the joints of the upper and lower films. Finally, according to the requirements, the entire page of products is cut horizontally and vertically using a cutting mechanism. After cutting, it becomes an independent packaged product.

[0003] When packaging products of different sizes, it is necessary to adjust the blade distance of the cutting mechanism in the film stretch packaging machine. At present, the blade distance adjustment is mostly done manually, that is, the blade is disassembled and reinstalled to adjust its position, which is a relatively cumbersome process. It is worth noting that existing stretch packaging films are usually printed with cutting lines, which are mostly black lines or other dark lines, used to guide the adjustment of the slitting blade distance. In theory, it is only necessary to adjust the cutter to align with the cutting line. However, in actual operation, since the stretching degree of the stretch packaging film is sometimes not completely consistent, the cutting line may be offset. In addition, the product introduction information is usually printed between the cutting lines. This introduction information includes the product name, specifications, production date, shelf life, ingredient list and method of consumption, etc. If the slitting knife does not cut along the cutting line, the introduction information of some products will be missing, affecting the packaging quality of the product.

[0004] In view of this, in order to address the above-mentioned deficiencies, the present invention improves and optimizes the packaging and slitting mechanism in the prior art, and develops an automatic fine-tuning slitting device for sausage packaging. Summary of the invention

[0005] In view of the problems existing in the prior art, the purpose of the present invention is to provide an automatic fine-tuning slitting device for sausage packaging, which can realize that when the packaging film is cut, the micro camera collects the real-time image of the packaging film in real time, and sends the data to the processing unit. The processing of the processing unit will automatically control the servo to adjust the slitting knife in real time to ensure that the slitting knife always closely follows the cutting line on the packaging film for precise cutting. This dynamic adjustment mechanism fundamentally avoids the problem of missing product introduction information that may occur in traditional cutting methods. This instant feedback and adjustment mechanism not only reduces the need for manual intervention, but also greatly improves production efficiency and cutting accuracy.

[0006] To solve the above problems, the present invention adopts the following technical solutions.

[0007] The slitting mechanism is a kind of automatic fine-adjusting slitting device for sausage packaging, comprising a frame plate, an inner wall of the frame plate is provided with a sliding shaft at the lower half, and a plurality of cutting knives are sleeved on the sliding shaft, a scissors fork structure body is provided inside the frame plate at a position above the cutting knife, a cutting block is connected at the cross rotating shaft of the scissors fork structure body, the number of the cutting blocks corresponds to the number of the cutting knives one by one, a fixed block is rotatably connected to the left end of the scissors fork structure body, an end of the fixed block away from the scissors fork structure body is fixedly connected to the inner wall of the frame plate, a raised portion is fixedly connected to one group of the right ends of the plurality of groups of the cutting blocks, a screw rod is penetrated through the raised portion, the screw rod is threadedly connected to the raised portion, a first motor is installed on the outer side surface of the frame plate, and an output shaft of the first motor penetrates the side wall of the frame plate and is connected to the screw rod;

[0008] A differential component is provided at the lower end of the slitting knife, and the differential component is used to adjust the offset of a single slitting knife. A chuck is provided below the differential component, and a groove is provided at the lower end of the chuck. A limit plate is provided inside the groove, and a convex plate is fixedly connected between the limit plate and the slitting knife.

[0009] Furthermore, the differential component includes a servo, which is installed on the side surface of the cutting block. A rotating plate is installed at the output end of the cutting block. A movable groove is penetrated through the rotating plate. A limiting column is arranged inside the movable groove. The lower end of the limiting column is fixedly connected to the upper end of the chuck.

[0010] Furthermore, the differential component also includes a micro camera, a transparent plate and a processing unit;

[0011] The micro camera is arranged in front of the slitting knife, and the number of the micro cameras corresponds to the number of the slitting knives. A connecting plate is installed on the upper end of the micro camera, and one end of the connecting plate is fixedly connected to the corresponding slitting block. The transparent plate is arranged below the micro camera, and a reference line is printed on the transparent plate. The reference line and the slitting knife are on the same straight line. The left and right ends of the transparent plate are fixedly connected with fixing plates, and the upper end of the fixing plate is fixedly connected to the connecting plate.

[0012] The processing unit is used to process the video data collected by the micro camera in real time, perform grayscale processing on each frame of the video data, and obtain the baseline and the cutting line; compare the relative positions of the cutting line and the baseline in the image, and calculate the horizontal offset direction of the cutting line compared to the baseline; calculate the horizontal offset distance of the cutting line compared to the baseline based on the horizontal offset direction of the cutting line and the baseline; calculate the PWM signal pulse width required for the corresponding horizontal deflection angle of the servo based on the positive and negative offset amount and the horizontal offset distance; and input the obtained PWM signal pulse width into the corresponding servo.

[0013] Furthermore, each frame of the video data is gray-processed to obtain a reference line and a cropping line, including:

[0014] The video data is read frame by frame, the color image of each frame is converted into a grayscale image, the grayscale image is smoothed using the Gaussian blur algorithm, the edge information is extracted using the Canny edge detection algorithm, the straight lines in the image are detected using the Hough transform, the detected straight lines are classified and identified, and the specific positions and parameters of the baseline and cutting lines are extracted.

[0015] Furthermore, the relative positions of the cutting line and the reference line in the image are compared, and the horizontal offset direction of the cutting line compared to the reference line is calculated, including:

[0016] According to the specific position and parameters of the baseline and cutting line, a random endpoint of the baseline is obtained. The coordinates are , and the corresponding endpoints on the cutting line The coordinates are ,pass Calculate the horizontal offset. If the horizontal offset is a positive value, the cutting line is on the right side of the baseline; if the horizontal offset is a negative value, the cutting line is on the left side of the baseline.

[0017] Furthermore, the horizontal offset distance of the cutting line compared to the reference line is calculated based on the horizontal offset direction of the cutting line and the reference line, including:

[0018] Take the absolute value of the horizontal offset to obtain the horizontal offset distance of the cutting line compared to the baseline.

[0019] Furthermore, the PWM signal pulse width required for the corresponding deflection angle of the servo is calculated based on the positive and negative values ​​of the horizontal offset and the horizontal offset distance, including:

[0020] A calculation formula is established according to the positive and negative horizontal offset, the horizontal offset distance and the PWM signal pulse width of the servo. The PWM signal pulse width of the servo is generated by inputting the positive and negative horizontal offset and the horizontal offset distance. If the horizontal offset is positive, the servo needs to deflect to the right; if the horizontal offset is negative, the servo needs to deflect to the left; the corresponding deflection angle of the servo is calculated by the horizontal offset distance.

[0021] Further, the obtained PWM signal pulse width is input into the corresponding steering gear, including:

[0022] After the servo obtains the pulse width of the PWM signal, it outputs the deflection direction and offset angle accordingly.

[0023] Furthermore, fixing grooves are correspondingly provided on the convex plate and the limit plate, and a raised strip is provided inside the fixing groove, and the raised strip is fixedly connected to the side surface of the sliding shaft. A second motor is installed on the outer side surface of the frame plate near the lower end, and the output end of the second motor passes through the frame plate and is fixedly connected to the sliding shaft.

[0024] Furthermore, one end of the screw rod away from the first motor is rotatably connected to a support plate, and the upper end of the support plate is fixedly connected to the upper end inner wall of the frame plate.

[0025] Compared with the prior art, the present invention has the following beneficial effects:

[0026] When this solution is cutting the packaging film, the micro camera collects the real-time image of the packaging film in real time and sends the data to the processing unit. The processing unit automatically controls the servo to adjust the slitting knife in real time to ensure that the slitting knife always closely follows the cutting line on the packaging film for precise cutting. This dynamic adjustment mechanism fundamentally avoids the problem of missing product introduction information that may occur in traditional cutting methods. This instant feedback and adjustment mechanism not only reduces the need for manual intervention, but also greatly improves production efficiency and cutting accuracy.

[0027] Secondly, when the horizontal deviation between the cutting line and the reference line on the packaging film exceeds the automatic adjustment range of the servo, the device will immediately trigger an alarm, which reflects the emergency response capability of the device and provides important safety guarantees in actual operation. The alarm methods are diverse, such as harsh sound alarms, eye-catching light prompts, or the alarm information is quickly conveyed to the staff through modern communication technology. This diversified alarm mechanism ensures that the staff can be informed of abnormal situations at the first time, respond quickly, and make necessary manual adjustments. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0029] Figure 1 This is an appearance view of the overall structure of the present invention;

[0030] Figure 2 This is the overall back appearance view of the present invention;

[0031] Figure 3 The figure is a disassembled view of the slitting knife and the limiting plate of the present invention;

[0032] Figure 4 It is a structural schematic diagram of the cutting block of the present invention;

[0033] Figure 5 The figure is a disassembled view of the micro camera and the transparent plate of the present invention.

[0034] Description of the numbers in the figure:

[0035] 1. Frame plate; 2. Sliding shaft; 3. Slitting knife; 4. Convex plate; 5. Limit plate; 6. Scissor fork structure body; 7. Fixed block; 8. Slitting block; 9. Raised part; 10. Screw rod; 11. First motor; 12. Chuck; 13. Groove; 14. Servo; 15. Rotating plate; 16. Movable groove; 17. Limit column; 18. Connecting plate; 19. Mini camera; 20. Transparent plate; 21. Base line; 22. Fixed plate; 23. Fixed groove; 24. Raised strip; 25. Second motor; 26. Support plate. DETAILED DESCRIPTION

[0036] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention; it is obvious that the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments, and all other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making creative work are within the scope of protection of the present invention.

[0037] See also Figures 1 to 5, an automatic fine-tuning slitting device for sausage packaging, comprising a frame plate 1, characterized in that: a sliding shaft 2 is installed on the inner wall of the frame plate 1 at the lower half, and a multi-component cutting knife 3 is sleeved on the sliding shaft 2, and a scissors fork structure body 6 is arranged at the upper position of the cutting knife 3 inside the frame plate 1, and a cutting block 8 is connected at the cross shaft of the scissors fork structure body 6, and the number of the cutting blocks 8 corresponds to the number of the cutting knife 3. The left end of the scissors fork structure body 6 is rotatably connected with a fixed block 7, and the end of the fixed block 7 away from the scissors fork structure body 6 is fixedly connected to the inner wall of the frame plate 1, and a group of the right ends of the multi-component cutting blocks 8 are fixedly connected with a protrusion 9, and a screw rod 10 is penetrated on the protrusion 9, and the screw rod 10 is threadedly connected to the protrusion 9, and a first motor 11 is installed on the outer surface of the frame plate 1, and the output shaft of the first motor 11 passes through the side wall of the frame plate 1 and is connected to the screw rod 10;

[0038] A differential component is provided at the lower end of the slitting knife 3, and the differential component is used to adjust the offset of a single slitting knife 3. A chuck 12 is provided below the differential component, and a groove 13 is provided at the lower end of the chuck 12. A limit plate 5 is provided inside the groove 13, and a cam 4 is fixedly connected between the limit plate 5 and the slitting knife 3.

[0039] When it is necessary to adjust the knife, first turn on the first motor 11 to control the output shaft of the first motor 11 to rotate forward and reverse, thereby controlling the screw rod 10 to rotate forward and reverse. When the screw rod 10 rotates forward and reverse, it will control the cutting block 8 equipped with the protrusion 9 to move left and right. When the cutting block 8 moves left and right, it will drive the scissors fork structure body 6 to shorten and extend. When the scissors fork structure body 6 shortens and extends, it will drive the multi-component cutting block 8 to approach or move away in equal proportion. When the cutting block 8 approaches or moves away, it will drive the differential component and the chuck 12 to move synchronously. When the chuck 12 moves, it will drive the corresponding limit plate 5 to move, and the corresponding cutting knife 3 is driven to move by the limit plate 5, so as to control the multi-component cutting knife 3 to approach or move away from each other in equal proportion. In this way, the multi-component cutting knife 3 is controlled to be controlled to approach or move away from each other in equal proportion. In this way, the multi-component cutting knife 3 is controlled at the same time. When the multi-component cutting knife 3 is controlled to correspond to the cutting line, the first motor 11 can be turned off to complete the knife adjustment operation.

[0040] In some embodiments, the differential component includes a servo 14, which is installed on the side surface of the cutting block 8. A rotating plate 15 is installed at the output end of the cutting block 8. A movable groove 16 is penetrated through the rotating plate 15. A limiting column 17 is arranged inside the movable groove 16. The lower end of the limiting column 17 is fixedly connected to the upper end of the chuck 12.

[0041] When the slitting knife 3 is cutting and packaging along the cutting line, if some individual cutting lines deviate from the slitting knife 3, the output shaft of the servo 14 can be controlled to deflect, and the output shaft of the servo 14 will drive the rotating plate 15 to rotate. When the rotating plate 15 rotates, it will squeeze the limit column 17 through the inner wall of the movable groove 16, thereby driving the limit column 17 and the chuck 12 to move together. When the chuck 12 moves, it will control the limit plate 5 to move left and right along the sliding shaft 2 until the slitting knife 3 can cut along the cutting line. Then the regulation of the slitting knife 3 is stopped, so that the single slitting knife 3 can be fine-tuned, thereby achieving precise cutting of the packaging film.

[0042] In some implementations, the differential assembly further includes a micro camera 19, a transparent plate 20, and a processing unit;

[0043] The micro camera 19 is arranged in front of the slitting knife 3, and the number of the micro cameras 19 corresponds to the number of the slitting knives 3. A connecting plate 18 is installed on the upper end of the micro camera 19, and one end of the connecting plate 18 is fixedly connected to the corresponding slitting block 8. A transparent plate 20 is arranged below the micro camera 19, and a reference line 21 is printed on the transparent plate 20. The reference line 21 and the slitting knife 3 are on the same straight line. The left and right ends of the transparent plate 20 are fixedly connected with a fixing plate 22, and the upper end of the fixing plate 22 is fixedly connected to the connecting plate 18;

[0044] The processing unit is used to process the video data collected by the micro camera 19 in real time, grayscale each frame of the video data, obtain the baseline 21 and the cutting line, read the video data frame by frame, convert the color image of each frame into a grayscale image, smooth the grayscale image using a Gaussian blur algorithm, extract edge information using a Canny edge detection algorithm, detect straight lines in the image using a Hough transform, classify and identify the detected straight lines, and extract the specific positions and parameters of the baseline 21 and the cutting line.

[0045] By adopting the above technical solution, the processing unit first captures the video stream in real time through the micro camera 19, and transmits the captured video data to the processing unit through a data line or wirelessly. The processing unit decomposes the video stream into separate frames and processes them frame by frame. For each frame of the image, the processing unit converts it from color (usually in RGB format) to a grayscale image by calculating the grayscale value of each pixel. The grayscale value is based on the weighted sum of the red, green and blue components of the pixel. After obtaining the grayscale image, the processing unit uses the Gaussian blur algorithm to smooth the image, and then the processing unit performs a convolution operation on the Gaussian kernel and the grayscale image to achieve a blur effect. After the image is smoothed, the processing unit uses the Canny edge detection algorithm to identify the edges in the image, and the processing unit uses the Hough transform to detect the straight lines in the image. Once the reference line 21 and the cutting line are identified, the processing unit will extract their specific positions and parameters, such as the coordinates, length, tilt angle, etc. of the starting point and the end point. Finally, the processing unit outputs these position and parameter information to the storage unit for further analysis or operation.

[0046] In some implementations, the relative positions of the cutting line and the reference line 21 in the image are compared, the horizontal offset direction of the cutting line compared to the reference line 21 is calculated, and the horizontal offset direction of a certain endpoint on the reference line 21 is randomly obtained according to the specific positions and parameters of the reference line 21 and the cutting line. The coordinates are , and the corresponding endpoints on the cutting line The coordinates are ,pass Calculate the horizontal offset. If the horizontal offset is a positive value, the cutting line is on the right side of the reference line 21; if the horizontal offset is a negative value, the cutting line is on the left side of the reference line 21. Calculate the horizontal offset distance of the cutting line compared to the reference line 21 based on the horizontal offset direction of the cutting line and the reference line 21, take the absolute value of the horizontal offset, and obtain the horizontal offset distance of the cutting line compared to the reference line 21.

[0047] By adopting the above technical solution, the exact position and parameters of the reference line 21 in the image are set in advance. The reference line 21 is a straight line, and its position can be determined by the coordinates of its two endpoints. Similarly, the position of the cutting line also needs to be determined. The cutting line is also a straight line, and its position is determined by the coordinates of its two endpoints. In order to calculate the horizontal offset, it is necessary to select an endpoint from each of the reference line 21 and the cutting line for comparison. You can select an endpoint of the reference line 21, for example ( , ), and the corresponding endpoints on the cutting line, such as ( , ), the two endpoints should be close or corresponding in the vertical direction, by calculating and The horizontal offset is obtained by the difference between ,in It is expressed as a horizontal offset. The position of the cutting line is determined by the positive or negative value of the horizontal offset. If the horizontal offset is a positive value, it means that the end point of the cutting line is on the right side of the end point of the reference line 21, so the cutting line is on the right side of the reference line 21 as a whole; if the horizontal offset is a negative value, it means that the end point of the cutting line is on the left side of the end point of the reference line 21, so the cutting line is on the left side of the reference line 21 as a whole. Regardless of which side of the reference line 21 the cutting line is on, the horizontal offset distance is the absolute value of the horizontal offset, that is, .

[0048] In some implementations, the PWM signal pulse width required for the horizontal deflection angle of the servo 14 is calculated based on the positive or negative value of the offset and the horizontal offset distance, and a calculation formula is established according to the positive or negative value of the horizontal offset, the horizontal offset distance and the PWM signal pulse width of the servo 14. The PWM signal pulse width of the servo 14 is generated by inputting the positive or negative value of the horizontal offset and the horizontal offset distance. If the horizontal offset is positive, the servo 14 needs to deflect to the right; if the horizontal offset is negative, the servo 14 needs to deflect to the left; the deflection angle corresponding to the servo 14 is calculated by the horizontal offset distance; the obtained PWM signal pulse width is input into the corresponding servo 14. After the servo 14 obtains the PWM signal pulse width, the servo 14 outputs the deflection direction and offset angle accordingly.

[0049] By adopting the above technical solution, a calculation formula is established according to the positive and negative of the horizontal offset, the horizontal offset distance and the PWM signal pulse width of the steering gear 14:

[0050] ;

[0051] in, yes The signal is the basis of the signal, which ensures that even if there is no offset, the servo 14 will receive a minimum Signal; yes The adjustable range of the signal, which determines the offset , the maximum amplitude that the PWM signal can change; is a tuning parameter that controls the logarithmic function's offset The sensitivity of A value of 1 will make the effect of the logarithmic function smoother, while a smaller value will The value will make the change steeper; When Output 1 indicates that the servo 14 is deflected to the right. When Output 0 indicates that the cutting line and the reference line 21 completely coincide with each other, and the servo 14 does not need to make any deflection adjustment. When Output , indicating that the servo 14 is deflected to the left. Because the reference line 21 and the slitting knife 3 are on the same straight line, that is, when the cutting line is completely aligned with the reference line 21, the slitting knife 3 cuts along the cutting line. The servo 14 can adjust the corresponding position of the slitting knife 3 in real time, so that the slitting knife 3 can cut along the cutting line in real time, avoiding the problem of missing part of the product introduction information and improving the slitting quality of the product. In addition, the adjustable range of the servo 14 is , the minimum position of the servo 14 is , the maximum position of the servo 14 is If the horizontal offset distance between the cutting line and the reference line 21 is greater than the adjustable range of the steering gear 14, the alarm system will be triggered. The alarm condition can be expressed as: or , substitute the obtained PWM formula into the above alarm conditions. If the alarm triggering conditions are met, an alarm will be issued. The alarm can be a sound alarm, a light alarm, or an alarm message can be sent to the staff through other communication methods to remind the staff to manually adjust the packaging film in time.

[0052] In some embodiments, a fixing groove 23 is correspondingly opened on the convex plate 4 and the limit plate 5, and a raised strip 24 is arranged inside the fixing groove 23. The raised strip 24 is fixedly connected to the side surface of the sliding shaft 2. A second motor 25 is installed on the outer side surface of the frame plate 1 near the lower end, and the output end of the second motor 25 passes through the frame plate 1 and is fixedly connected to the sliding shaft 2.

[0053] When the slitting knife 3 is cutting the packaging film, the sliding shaft 2 is driven to rotate by the second motor 25. When the sliding shaft 2 rotates, it drives the slitting knife 3 to rotate through the raised strip 24. In this way, the slitting knife 3 can perform rotational cutting while cutting the packaging film straightly, which can greatly improve the cutting effect of the packaging film.

[0054] In some implementations, one end of the screw rod 10 away from the first motor 11 is rotatably connected to a support plate 26 , and an upper end of the support plate 26 is fixedly connected to an upper inner wall of the frame plate 1 .

[0055] The support plate 26 is installed to provide a support point for the screw rod 10 , thereby ensuring that the screw rod 10 does not swing when rotating.

[0056] The above are only preferred specific implementations of the present invention; however, the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solutions and improved concepts of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An automatic fine-adjusting slitting device for sausage packaging, comprising a frame plate (1), characterized in that: The inner wall of the frame plate (1) is provided with a sliding shaft (2) at the lower half, and a plurality of cutting knives (3) are sleeved on the sliding shaft (2). A scissor-fork structure body (6) is provided inside the frame plate (1) at a position above the cutting knives (3). A cutting block (8) is connected to the cross-rotating axis of the scissor-fork structure body (6). The number of the cutting blocks (8) corresponds to the number of the cutting knives (3). The left end of the scissor-fork structure body (6) is rotatably connected to a fixed block (7). One end of the fixed block (7) away from the scissor fork structure body (6) is fixedly connected to the inner wall of the frame plate (1); one group of the right ends of the plurality of groups of cutting blocks (8) is fixedly connected to a protrusion (9); a screw rod (10) is provided through the protrusion (9); the screw rod (10) is threadedly connected to the protrusion (9); a first motor (11) is installed on the outer surface of the frame plate (1); an output shaft of the first motor (11) passes through the side wall of the frame plate (1) and is connected to the screw rod (10); A differential component is provided at the lower end of the slitting knife (3), and the differential component is used to adjust the offset of a single slitting knife (3). A chuck (12) is provided below the differential component, and a groove (13) is provided at the lower end of the chuck (12). A limit plate (5) is provided inside the groove (13), and a convex plate (4) is fixedly connected between the limit plate (5) and the slitting knife (3); The differential assembly comprises a steering gear (14), the steering gear (14) being mounted on a side surface of a dividing block (8), a rotating plate (15) being mounted on an output end of the dividing block (8), a movable groove (16) being formed through the rotating plate (15), a limiting column (17) being arranged inside the movable groove (16), the lower end of the limiting column (17) being fixedly connected to the upper end of the clamp (12); The differential component also includes a micro camera (19), a transparent plate (20) and a processing unit; The micro camera (19) is arranged in front of the slitting knife (3), and the number of the micro cameras (19) corresponds to the number of the slitting knives (3). A connecting plate (18) is installed on the upper end of the micro camera (19), and one end of the connecting plate (18) is fixedly connected to the corresponding slitting block (8). The transparent plate (20) is arranged below the micro camera (19), and a reference line (21) is printed on the transparent plate (20). The reference line (21) and the slitting knife (3) are on the same straight line. The left and right ends of the transparent plate (20) are fixedly connected to fixing plates (22), and the upper end of the fixing plate (22) is fixedly connected to the connecting plate (18); The processing unit is used to process video data collected in real time by the micro camera (19), grayscale each frame of the video data, and obtain a baseline (21) and a cutting line; compare the relative positions of the cutting line and the baseline (21) in the image, and calculate the horizontal offset direction of the cutting line relative to the baseline (21); calculate the horizontal offset distance of the cutting line relative to the baseline (21) based on the horizontal offset directions of the cutting line and the baseline (21); and calculate the PWM signal pulse width required for the corresponding horizontal deflection angle of the servo (14) based on the positive and negative offset value and the horizontal offset distance; The obtained PWM signal pulse width is input into the corresponding servo (14).

2. The automatic fine-adjusting slitting device for sausage packaging according to claim 1, characterized in that: Each frame of the video data is gray-scaled to obtain a baseline (21) and a cropping line, including: The video data is read frame by frame, the color image of each frame is converted into a grayscale image, the grayscale image is smoothed using a Gaussian blur algorithm, the edge information is extracted using a Canny edge detection algorithm, the straight lines in the image are detected using a Hough transform, the detected straight lines are classified and identified, and the specific positions and parameters of the baseline (21) and the cropping line are extracted.

3. The automatic fine-adjusting slitting device for sausage packaging according to claim 2, characterized in that: Compare the relative positions of the cutting line and the reference line (21) in the image, and calculate the horizontal offset direction of the cutting line compared to the reference line (21), including: According to the specific positions and parameters of the baseline (21) and the cutting line, a random end point on the baseline (21) is obtained. The coordinates are , and the corresponding endpoints on the cutting line The coordinates are ,pass The horizontal offset is calculated. If the horizontal offset is a positive value, the cutting line is on the right side of the reference line (21); if the horizontal offset is a negative value, the cutting line is on the left side of the reference line (21).

4. The automatic fine-adjusting slitting device for sausage packaging according to claim 3, characterized in that: The horizontal offset distance of the cutting line compared to the reference line (21) is calculated based on the horizontal offset direction of the cutting line and the reference line (21), including: The absolute value of the horizontal offset is taken to obtain the horizontal offset distance of the cutting line compared to the reference line (21).

5. The automatic fine-adjusting slitting device for sausage packaging according to claim 4, characterized in that: The PWM signal pulse width required for the corresponding deflection angle of the servo (14) is calculated based on the positive and negative horizontal offset and the horizontal offset distance, including: A calculation formula is established according to the positive or negative value of the horizontal offset, the horizontal offset distance and the PWM signal pulse width of the servo (14); the PWM signal pulse width of the servo (14) is generated by inputting the positive or negative value of the horizontal offset and the horizontal offset distance; if the horizontal offset is a positive value, the servo (14) needs to be deflected to the right; if the horizontal offset is a negative value, the servo (14) needs to be deflected to the left; and the corresponding deflection angle of the servo (14) is calculated according to the horizontal offset distance.

6. The automatic fine-adjusting slitting device for sausage packaging according to claim 5, characterized in that: The obtained PWM signal pulse width is input into the corresponding servo (14), including: After the servo (14) obtains the pulse width of the PWM signal, the servo (14) outputs the deflection direction and the offset angle accordingly.

7. The automatic fine-adjusting slitting device for sausage packaging according to claim 1, characterized in that: The convex plate (4) and the limiting plate (5) are provided with fixing grooves (23) correspondingly, and a protruding strip (24) is provided inside the fixing groove (23). The protruding strip (24) is fixedly connected to the side surface of the sliding shaft (2). A second motor (25) is installed near the lower end of the outer side surface of the frame plate (1), and the output end of the second motor (25) passes through the frame plate (1) and is fixedly connected to the sliding shaft (2).

8. The automatic fine-adjusting slitting device for sausage packaging according to claim 7, characterized in that: One end of the screw rod (10) away from the first motor (11) is rotatably connected to a support plate (26), and the upper end of the support plate (26) is fixedly connected to the upper inner wall of the frame plate (1).

Images