A fish intestinal vacuum packaging apparatus and method

Abstract

The application belongs to the technical field of vacuum packaging, and particularly discloses a fish intestine vacuum packaging device and method, which comprises a packaging cabinet, a feeding mechanism and a vacuum packaging and sealing mechanism, a moving bag supporting mechanism is arranged above the packaging cabinet, a mounting table is fixedly connected to the middle of the outer wall of the front end of the packaging cabinet, recycling assemblies are arranged on both sides of the inside of the mounting table, side frames are fixedly installed on both sides of the outer wall of the front end of the packaging cabinet, a packaging bag placing mechanism is arranged on the upper surface of one group of the side frames, top frames are arranged on the upper surfaces of two groups of the side frames, a bag moving mechanism is arranged on one side of the top frame, and the bag moving mechanism is used for adsorbing a packaging bag and moving the packaging bag to a packaging station. The symmetrical convex rollers provided with flexible pads are used to automatically flatten and center the fish intestine in the bag during the packaging process, effectively solve the problem of the inclination of the fish intestine in the bag caused by the stickiness and easy rolling of the fish intestine, and ensure the quality and appearance consistency of the vacuum packaging.

Description

Technical Field

[0001] This invention belongs to the field of vacuum packaging technology, and specifically discloses a vacuum packaging device and method for fish intestines. Background Technology

[0002] With the rapid development of the aquatic product processing industry, fish intestine products, mainly made from fish meat and fish paste, are widely welcomed by the market due to their rich nutrition and unique flavor. After completing processes such as filling, cooking, and cooling, fish intestines need to be preserved and sold through vacuum or modified atmosphere packaging. The packaging effect directly affects the product's commercial value, shelf life, and consumer experience.

[0003] However, fish intestine products possess unique physical characteristics such as soft texture, moist and slippery surface, and easily deformable shape, posing significant challenges to their automated packaging. Particularly during the packaging process, when a single fish intestine is fed into the opened bag, its cylindrical structure and low coefficient of friction between its soft surface and the packaging film cause it to easily roll and shift within the bag, failing to automatically lay flat in the ideal position in the center of the bag before sealing. This irregularity in the bag's posture leads to several serious problems: First, during the subsequent vacuuming process, fish intestines accumulating at one end obstruct airflow, easily forming wrinkles or residual air chambers, severely affecting the vacuum level; second, misaligned fish intestines may be too close to the sealing area, causing poor film fusion during heat sealing or even sealing into the intestine itself, leading to air leakage and spoilage; finally, although the net content of the product is strictly controlled during filling, the inconsistent posture within the bag results in significant differences in the final appearance after packaging, affecting the neatness of the box and the effectiveness of the terminal display, damaging the brand's high-quality image.

[0004] Existing technologies lack a dedicated device that can efficiently link with automated packaging processes, move with precision and gentleness, and actively adapt to the physical characteristics of fish intestines, thereby ensuring reliable, consistent, and damage-free automatic flattening within the packaging bag. Summary of the Invention

[0005] The purpose of this invention is to solve the problems existing in the background art, and to propose a vacuum packaging device for fish intestines, including a packaging cabinet, a feeding mechanism, and a vacuum packaging and sealing mechanism. A movable bag-supporting mechanism is provided above the packaging cabinet. An installation platform is fixedly connected to the middle of the front outer wall of the packaging cabinet. Recycling components are provided on both sides of the interior of the installation platform. Side frames are fixedly installed on both sides of the front outer wall of the packaging cabinet. A bag-placing mechanism is provided on the upper surface of one set of side frames, and a top frame is provided on the upper surfaces of both sets of side frames. A bag-transferring mechanism is provided on one side of the top frame. The bag-transferring mechanism is used to absorb the packaging bags and transfer them to the packaging station. Two symmetrically arranged flattening and extruding mechanisms are connected to the upper surface of the installation platform via U-shaped rods. Each assembly includes an L-shaped frame, with a sorting rack fixedly installed on the upper part of the L-shaped frame. Clamping plates are fixedly installed on both sides of the sorting rack. A connecting shaft is rotatably installed inside both clamping plates. A convex roller is fixedly wrapped around the outside of the connecting shaft, and a flexible pad is wrapped around the outside of the convex roller. A driving mechanism is provided at one end of the convex roller. A guide plate is fixedly installed inside the sorting rack and above the corresponding recycling component. A U-shaped slide is installed on one side of both sets of side frames. A second cylinder is fixedly installed on the outer wall of the front end of the U-shaped slide. A lifting plate is fixedly installed at the telescopic end of the second cylinder. A channel for sliding the lifting plate is opened in the middle of the mounting platform. Connecting blocks are fixedly installed on both sides of the outer wall of the U-shaped slide. Lead screws and guide rods are respectively provided on both sides of the inside of the two sets of side frames.

[0006] In the above technical solution, the feeding mechanism further includes a palletizing conveyor fixedly installed on one side of the packaging cabinet. One end of the palletizing conveyor extends out as a feeding conveyor belt, and the other end of the feeding conveyor belt extends to the bottom of the top frame and corresponds to the top of the filled packaging bag. A control box is fixedly installed on the outside side of the packaging cabinet.

[0007] In the above technical solution, the vacuum packaging sealing mechanism further includes support platforms symmetrically installed on the outer wall of the front end of the packaging cabinet. A vacuum negative pressure machine is fixedly installed above each of the two sets of support platforms. A frame plate is fixedly installed on the outer wall of the front end of the packaging cabinet and above the vacuum negative pressure machine. An induction cylinder is fixedly installed on one side of the outer wall of the frame plate. A sliding plate is fixedly installed on the telescopic end of the induction cylinder. The sliding plate is connected to a half mold through multiple internally installed rods. The vacuum negative pressure machine is connected to the half mold through a vacuum negative pressure pipe. A heating seal is provided on the outer surface of the half mold that is close to each other and near the top.

[0008] In the above technical solution, the packaging bag placement mechanism further includes a support plate fixedly installed on the upper surface of one of the side frames. An open-ended packaging bag sorting cabinet is fixedly installed on the upper surface of the support plate. A slide is slidably installed on one side of the packaging bag sorting cabinet. Two connecting rods are fixedly installed on the outside of one side of the slide. The ends of the two connecting rods are connected to a bag-holding plate. A telescopic cylinder is provided below the outside of the slide. One end of the telescopic cylinder is fixedly installed on the upper surface of the side frame at the corresponding position through a fixed mounting seat.

[0009] In the above technical solution, the bag transfer mechanism further includes a first cylinder fixedly installed on one side of the outer wall of the top frame, and a vacuum suction bag mechanism is fixedly provided at the telescopic end of the first cylinder.

[0010] In the above technical solution, the recycling component further includes a recycling bin that is movable and mounted inside the upper part of the mounting platform, and a handle is fixedly installed on one side of the outer wall of the recycling bin.

[0011] In the above technical solution, the mobile bag-supporting mechanism further includes a frame rail fixedly installed above the packaging cabinet, a mobile platform slidably installed above the frame rail, an electric push rod fixedly installed on the outer side of one end of the mobile platform, the electric push rod being fixedly embedded inside the frame rail, and a third cylinder fixedly installed on both sides of the mobile platform. A vacuum adsorption device is fixedly installed on the telescopic end of the third cylinder, and the vacuum adsorption device adsorbs onto both sides of the packaging bag, thereby opening the packaging bag.

[0012] In the above technical solution, the driving mechanism further includes a fixed frame vertically installed at the position corresponding to the connecting shaft. A rotary motor is fixedly embedded in the upper part of the fixed frame. A second gear is fixedly sleeved on the outside of the output end of the rotary motor. A first gear is fixedly sleeved on one end of the connecting shaft. The first gear and the second gear are meshed and connected.

[0013] In the above technical solution, a servo motor is further fixedly installed at the lower end of the lead screw. The servo motor is embedded in the lower part of the side frame, and the end of the lead screw away from the servo motor is rotatably engaged with the upper part of the side frame. The guide rod is fixedly connected to another set of side frames. The two sets of connecting blocks are respectively fitted on the outside of the lead screw and the guide rod. The connecting block corresponding to the outside of the lead screw is threadedly engaged with the lead screw, and the connecting block corresponding to the outside of the guide rod is slidably engaged with the guide rod. A material conveying mechanism is fixedly installed on the outer wall of the front end of the packaging cabinet near the bottom.

[0014] A method for vacuum packaging fish intestines, using the aforementioned vacuum packaging device for fish intestines, includes the following steps:

[0015] S1: The packaging bags are arranged by the packaging bag placement mechanism. The first cylinder of the bag transfer mechanism drives the vacuum bag suction mechanism to pick up a single packaging bag and transfer it to the packaging station. Then the vacuum suction device of the moving bag support mechanism suctions the inner walls on both sides of the packaging bag and opens it up.

[0016] S2: The feeding mechanism's unloading conveyor belt transports the individual fish intestines sequentially and they fall into the already opened packaging bag;

[0017] S3: The rotary motor of the drive mechanism starts, and the connecting shaft and the convex roller rotate in opposite directions through the meshing of the first gear and the second gear. The flexible pad on the outside of the convex roller contacts the two ends of the fish intestines inside the bag, gently moving them to the middle of the packaging bag and aligning them flat. Then the U-shaped slide moves up and down, which in turn flattens and squeezes the fish intestines inside the packaging bag. The excess fish intestines squeezed by the convex roller are guided into the recycling bins on both sides through the top of the packaging bag.

[0018] S4: Then, driven by the U-shaped slide and the lifting plate, it moves downward. Then, the induction cylinder of the vacuum packaging sealing mechanism drives the two half molds to close, vacuum the packaging bag, and heat seal it with the heating strip. After opening, the packaged fish intestines fall onto the upper surface of the material conveying mechanism and are then output through the material conveying mechanism to complete the packaging.

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

[0020] 1. This invention, through the setting of a flattening extrusion mechanism composed of convex rollers, a flexible pad, and a driving mechanism, can automatically and gently move and arrange the fish intestines inside the packaging bag after they fall in but before sealing. This mechanism utilizes convex rollers with flexible pads rotating in opposite directions to effectively overcome the sticky and slippery characteristics of the fish intestines, ensuring precise centering and flattening at the bottom of the bag. This fundamentally solves the industry problems of incomplete vacuuming, easy heat sealing failure, and inconsistent appearance caused by product tilting and bulging inside the bag, significantly improving packaging reliability and yield.

[0021] 2. This invention integrates a flattening extrusion mechanism with a liftable U-shaped slide and a support plate. After the convex roller performs initial horizontal shaping, the U-shaped slide can controllably move the packaging bag and the internal fish intestines, using flexible contact and moderate pressure to flatten and fix the fish intestines. This coordinated action further eliminates air from the bag, making the fish intestines more stable and laying a solid foundation for achieving a high vacuum and wrinkle-free perfect seal.

[0022] 3. This invention constructs a complete closed-loop product flow management system by setting up a recycling component with a guide ramp. After individual fish intestines fall sequentially into the packaging bag and reach the sealing point, any excess portion exceeding the bag's internal capacity is guided to a recycling bin, effectively preventing sealing defects or bag damage caused by excessive product in a single package. This design ensures strict consistency in the net content and appearance of each package while reducing direct material waste and improving the intelligence and precision of the production line.

[0023] 4. This invention features high integration and a smooth automated process. From the automatic dispensing and opening of packaging bags, to the precise placement of fish intestines and automatic leveling inside the bags, and finally to vacuum heat sealing and finished product output, each function is tightly integrated, and the timing of actions is controllable. The entire device is specifically designed for the physical characteristics of fish intestines, significantly reducing reliance on manual adjustments. While ensuring product hygiene and safety, it significantly improves packaging efficiency and overall production capacity, demonstrating promising prospects for industrial application. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0025] Figure 2 This is a schematic diagram of the overall structure of the present invention from another angle;

[0026] Figure 3 This is a schematic diagram of the connection structure between the packaging cabinet and the bag-transfer mechanism of the present invention;

[0027] Figure 4 This is a schematic diagram of the connection structure between the U-shaped slide and the side frame of the present invention;

[0028] Figure 5 This is a schematic diagram of the connection structure between the top frame and the bag-moving mechanism of the present invention;

[0029] Figure 6 This is a schematic diagram of the connection structure between the U-shaped slide and the mounting platform of the present invention;

[0030] Figure 7 This is a schematic diagram of the packaging bag placement mechanism of the present invention;

[0031] Figure 8 This is a schematic diagram of the connection structure between the flattening extrusion mechanism and the recycling component of the present invention;

[0032] Figure 9 This is a schematic diagram of the connection structure between the convex roller and the connecting shaft of the present invention.

[0033] In the diagram: 1. Packaging cabinet; 2. Palletizing conveyor; 3. Feeding conveyor belt; 4. Top frame; 5. First cylinder; 6. Packaging bag sorting cabinet; 7. Slide carriage; 8. U-shaped slide table; 9. Side frame; 10. Lead screw; 11. Material guiding and conveying mechanism; 12. Guide rod; 13. Frame rail; 14. Vacuum adsorption device; 15. Electric push rod; 16. Control box; 17. Slide plate; 18. Induction cylinder; 19. Support platform; 20. Half mold; 21. Vacuum negative pressure machine; 22. Shelf plate; 23. Moving table; 24. 25. Lifting plate; 26. Second cylinder; 27. Servo motor; 28. Connecting block; 29. ​​Vacuum bag suction mechanism; 30. Support plate; 31. First gear; 32. Mounting platform; 33. Connecting shaft; 34. Telescopic cylinder; 35. Connecting rod; 36. Bag-supporting plate; 37. Fixed seat; 38. Recycling bin; 39. Sorting rack; 40. L-shaped frame; 41. Fixed frame; 42. Second gear; 43. Rotary motor; 44. Convex roller; 45. Clamping plate; 46. Guide inclined plate; 47. U-shaped rod. Detailed Implementation

[0034] To better understand the above-mentioned objectives, features, and advantages of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0035] Numerous specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and therefore the invention is not limited to the specific embodiments disclosed below.

[0036] like Figures 1-9 The illustrated vacuum packaging device for fish intestines includes a packaging cabinet 1, a feeding mechanism, and a vacuum packaging and sealing mechanism. A movable bag-supporting mechanism is installed above the packaging cabinet 1. An installation platform 31 is fixedly connected to the middle of the front outer wall of the packaging cabinet 1. Recycling components are installed on both sides of the installation platform 31. Side frames 9 are fixedly installed on both sides of the front outer wall of the packaging cabinet 1. A bag-placing mechanism is installed on the upper surface of one set of side frames 9. A top frame 4 is installed on the upper surface of both sets of side frames 9. A bag-transferring mechanism is installed on one side of the top frame 4. This bag-transferring mechanism is used to absorb the packaging bags and transfer them to the packaging station. Two sets of... The symmetrically arranged flattening and extruding mechanism includes two sets of flattening and extruding mechanisms, each including an L-shaped frame 39. A sorting frame 38 is fixedly installed on the upper part of the L-shaped frame 39. Clamping plates 44 are fixedly installed on both sides of the sorting frame 38. A connecting shaft 32 is rotatably installed inside the two clamping plates 44. A convex roller 43 is fixedly wrapped on the outside of the connecting shaft 32. A flexible pad is covered on the outside of the convex roller 43. A drive mechanism is provided at one end of the convex roller 43. A guide plate 45 is fixedly installed inside the sorting frame 38 and above the corresponding recycling component. The recycling component includes a recycling box 37 that is movably clamped inside the upper part of the mounting platform 31. A handle is fixedly installed on one side of the outer wall of the recycling box 37.

[0037] In this embodiment, the recycling component is used to collect the leftover materials generated during the packaging process. The recycling box 37 is a pull-out box. The recycling box 37 can be pulled out from the mounting platform 31 by means of the handle to remove the excess materials inside.

[0038] The bag transfer mechanism is used to pick up and extract individual packaging bags from the packaging bag placement mechanism, and then horizontally transfer them to the packaging preparation station located directly above the packaging cabinet 1. A movable bag opening mechanism is provided above the packaging cabinet 1 to open the opening of the packaging bag after it arrives at the station.

[0039] The clamping plates 44 on both sides inside the sorting rack 38 can clamp the connecting shaft 32, thereby allowing the convex roller 43 to rotate stably inside the sorting rack 38;

[0040] The guide plate 45 extends downward toward the recycling box 37 from the position near the convex roller 43, so as to smoothly guide the extruded excess fish intestines into the recycling box 37.

[0041] The feeding mechanism includes a palletizing conveyor 2 fixedly installed on one side of the packaging cabinet 1. A feeding conveyor belt 3 extends from one end of the inside of the palletizing conveyor 2. One end of the feeding conveyor belt 3 extends to the bottom of the top frame 4 and corresponds to the top of the filled packaging bag. A control box 16 is fixedly installed on the outside side of the packaging cabinet 1.

[0042] In this embodiment, the feeding mechanism is responsible for conveying the fish intestines to be packaged to the packaging station. With the cooperation of the palletizing conveyor 2 and the unloading conveyor belt 3, the outlet end of the unloading conveyor belt 3 extends precisely to the bottom of the top frame 4 and corresponds to the top of the packaging bag opening on the packaging station below, ensuring that the fish intestines can accurately fall into the bag later.

[0043] The vacuum packaging sealing mechanism includes support platforms 19 symmetrically installed on the front outer wall of the packaging cabinet 1. Vacuum negative pressure machines 21 are fixedly installed above both support platforms 19. A frame plate 22 is fixedly installed on the front outer wall of the packaging cabinet 1 and above the vacuum negative pressure machine 21. An induction cylinder 18 is fixedly installed on one side of the outer wall of the frame plate 22. A sliding plate 17 is fixedly installed on the telescopic end of the induction cylinder 18. The sliding plate 17 is connected to a half mold 20 through multiple internally installed rods. The vacuum negative pressure machine 21 is connected to the half mold 20 through a vacuum negative pressure pipe. A heating seal is provided on the outer surface of the half mold 20 that is close to each other and near the top.

[0044] In this embodiment, two half-molds 20 are arranged opposite each other. A vacuum negative pressure machine 21 is connected to the internal air passage of the corresponding half-mold 20 via a vacuum negative pressure pipe for vacuuming. On the outer surface of the two half-molds 20 on the side closest to each other, near the upper sealing line, a heating seal is embedded for heat-sealing the packaging bag after vacuuming. This vacuum sealing technology is a mature existing technology and therefore will not be described in detail.

[0045] It should be noted that "half-mold 20" is a general term in mold making for a two-part structure, referring to a mold divided into left and right or upper and lower parts along the parting surface, used to cover or hold the product. In vacuum forming or thermoforming, molds often use either male or female mold structures, but in some complex structures, such as hollow products or composite molds, two half-molds 20 are used in combination.

[0046] The packaging bag placement mechanism includes a support plate 29 fixedly installed on the upper surface of one of the side frames 9. A packaging bag sorting cabinet 6 with one open end is fixedly installed on the upper surface of the support plate 29. A slide 7 is slidably installed on one side inside the packaging bag sorting cabinet 6. Two connecting rods 34 are fixedly installed on the outside of one side of the slide 7. The ends of the two connecting rods 34 are connected to a bag-holding plate 35. A telescopic cylinder 33 is set below the outside of the slide 7. One end of the telescopic cylinder 33 is fixedly installed on the upper surface of the side frame 9 at the corresponding position through a fixed seat 36.

[0047] In this embodiment, the pressing movement of the telescopic cylinder 33 can drive the bag-pressing plate 35 to press the vertically arranged packaging bags layer by layer, thereby facilitating the flexible pressing of the rear packaging bags after the later packaging bags are removed.

[0048] The bag transfer mechanism includes a first cylinder 5 fixedly installed on one side of the outer wall of the top frame 4, and a vacuum suction mechanism 28 is fixedly installed at the telescopic end of the first cylinder 5;

[0049] In this embodiment, the bag transfer mechanism is responsible for picking up and transferring bags, and a vacuum bag suction mechanism 28 is fixedly installed at the telescopic end of the first cylinder 5. During operation, the first cylinder 5 drives the vacuum bag suction mechanism 28 to move horizontally into the packaging bag sorting cabinet 6, suctions the outermost packaging bag, and then retracts to transfer it horizontally to the packaging preparation station directly above the packaging cabinet 1.

[0050] The mobile bag-supporting mechanism includes a frame rail 13 fixedly installed above the packaging cabinet 1, a mobile platform 23 slidably installed above the frame rail 13, an electric push rod 15 fixedly installed on the outer side of one end of the mobile platform 23, the electric push rod 15 is fixedly embedded inside the frame rail 13, and a third cylinder is fixedly installed on the upper sides of both sides of the mobile platform 23. A vacuum adsorption device 14 is fixedly installed on the telescopic end of the third cylinder. The vacuum adsorption device 14 adsorbs on both sides of the packaging bag, thereby opening the packaging bag.

[0051] In this embodiment, after the bag transfer mechanism delivers the packaging bag to the workstation, the moving table 23 drives the vacuum adsorption device 14 to adsorb both sides of the packaging bag. Subsequently, the third cylinder drives the vacuum adsorption device 14 to move backward, thereby fully opening the opening of the packaging bag to form a stable open bag body, waiting for filling.

[0052] The drive mechanism includes a fixed frame 40 that is vertically installed at the corresponding position of the connecting shaft 32. A rotary motor 42 is fixedly embedded in the upper part of the fixed frame 40. A second gear 41 is fixedly sleeved on the outside of the output end of the rotary motor 42. A first gear 30 is fixedly sleeved on one end of the connecting shaft 32. The first gear 30 and the second gear 41 are meshed and connected.

[0053] In this embodiment, the output shaft of the rotary motor 42 drives the second gear 41 to rotate, which meshes with the first gear 30 at one end of the connecting shaft 32. The two rotate in opposite directions, which can drive the connecting shaft 32 and the convex roller 43 to straighten the cheap fish intestines inside the packaging bag.

[0054] A U-shaped slide table 8 is installed on one side of both sets of side frames 9. A second cylinder 25 is fixedly installed on the outer wall of the front end of the U-shaped slide table 8. A lifting plate 24 is fixedly installed on the telescopic end of the second cylinder 25. A channel adapted to the sliding of the lifting plate 24 is opened in the middle of the mounting platform 31. Connecting blocks 27 are fixedly installed on both sides of the outer wall of the U-shaped slide table 8. A lead screw 10 and a guide rod 12 are respectively set on both sides of the interior of the two sets of side frames 9. A servo motor 26 is fixedly installed at the lower end of the lead screw 10. The servo motor 26 is embedded in the lower interior of the side frame 9, and the end of the lead screw 10 away from the servo motor 26 is rotatably engaged with the upper interior of the side frame 9. The guide rod 12 is fixedly connected to the other set of side frames 9. Two sets of connecting blocks 27 are respectively fitted on the outer side of the lead screw 10 and the guide rod 12. The connecting block 27 corresponding to the outer side of the lead screw 10 is threadedly engaged with the lead screw 10, and the connecting block 27 corresponding to the outer side of the guide rod 12 is slidably engaged with the guide rod 12. A material conveying mechanism 11 is fixedly installed on the outer wall of the front end of the packaging cabinet 1 near the bottom.

[0055] In this embodiment, the lower end of the lead screw 10 is driven by a servo motor 26 embedded inside the side frame 9, and the upper end is rotatably engaged with the side frame 9. The guide rod 12 is fixedly connected to the other side frame 9. Connecting blocks 27 on both sides are respectively fitted onto the lead screw 10 and the guide rod 12, wherein the connecting block 27 engaged with the lead screw 10 has a threaded connection, and the connecting block 27 engaged with the guide rod 12 has a sliding connection. By driving the lead screw 10 to rotate through the servo motor 26, the entire U-shaped slide table 8 together with the lifting plate 24 can be smoothly raised and lowered in the vertical direction, thereby completing the work of moving the packaging bag.

[0056] The material conveying mechanism 11 is a short conveying assembly used to output packaged products.

[0057] A method for vacuum packaging fish intestines, using the aforementioned vacuum packaging device for fish intestines, includes the following steps:

[0058] S1: The packaging bags are arranged by the packaging bag placement mechanism. The first cylinder 5 of the bag transfer mechanism drives the vacuum bag suction mechanism 28 to pick up a single packaging bag and transfer it to the packaging station. Then the vacuum adsorption device 14 of the bag support mechanism adsorbs the inner walls on both sides of the packaging bag and opens it up.

[0059] S2: The feeding conveyor belt 3 of the feeding mechanism transports the single fish intestines one by one and drops them into the opened packaging bag;

[0060] S3: The rotary motor 42 of the drive mechanism starts, and the first gear 30 and the second gear 41 mesh to drive the connecting shaft 32 and the convex roller 43 to rotate in opposite directions. The flexible pad on the outside of the convex roller 43 contacts the two ends of the fish intestines inside the bag, gently moving them to the middle of the packaging bag and aligning them flat. Then the U-shaped slide table 8 moves up and down, and in conjunction with the flattening and squeezing of the fish intestines inside the packaging bag, the excess fish intestines squeezed by the convex roller 43 are guided into the recycling bins 37 on both sides through the top of the packaging bag.

[0061] S4: Then, driven by the U-shaped slide table 8 and the lifting plate 24, it moves downward. Then, the induction cylinder 18 of the vacuum packaging sealing mechanism drives the two half molds 20 to close, vacuum the packaging bag and heat seal it with the heating strip, and then open it. The packaged fish intestines fall onto the upper surface of the material guiding and conveying mechanism 11, and then are output through the material guiding and conveying mechanism 11 to complete the packaging.

[0062] Working principle: Multiple packaging bags pre-stacked in the packaging bag sorting cabinet 6 are kept vertically stacked by the pressure of the bag-holding plate 35 and the push of the telescopic cylinder 33. When the fish intestine packaging is being performed, the first cylinder 5 of the bag-moving mechanism drives the vacuum bag suction mechanism 28 to move to one side of the packaging bag sorting cabinet 6, adsorbs the outermost packaging bag, and then moves it horizontally to the packaging preparation station directly above the packaging cabinet 1. Subsequently, the moving bag-supporting mechanism starts working, and the electric push rod 15 drives the moving table 23 to move along the front end of the frame rail 13, so that the two sets of vacuum suction devices 14 respectively adsorb onto the outer walls of the positioned packaging bags on both sides. After the adsorption is firm, the vacuum suction devices 14 move backward to fully open the packaging bag opening, forming a stable open bag body;

[0063] The palletizing conveyor 2 outputs the arranged individual fish intestines one by one, which are then transported and guided by the feeding conveyor belt 3. The fish intestines fall into the bag from directly above the opened packaging bag. Due to the rolling nature of the fish intestines, their initial landing position may be biased to one side or one end. At this time, the lifting plate 24, driven by the second cylinder 25, lifts the bottom of the packaging bag. After feeding is completed, the two sets of leveling and extruding mechanisms set above the mounting platform 31 start synchronously. The rotary motor 42 of its drive mechanism drives the two connecting shafts 32 and the convex rollers 43 fixed on them to rotate in opposite directions through the meshing of the second gear 41 and the first gear 30. The flexible pads covering the surface of the convex rollers 43 rotate accordingly and gently contact the fish intestines inside the bag from both sides. Under the action of rotational friction, the convex rollers 43 push and move the fish intestines that are skewed or clustered at one end toward the center of the packaging bag until they are evenly centered at the bottom center of the bag. This process only involves horizontally aligning and sorting the fish intestines. After the intestines are flat and centered, the convex roller 43 stops rotating, while the upper end of the packaging bag remains open for material feeding. Then, after the fish intestines are stacked, the U-shaped slide table 8 will begin to descend under the drive of the servo motor 26, through the transmission of the lead screw 10, guide rod 12 and connecting block 27. However, its descent action involves moving the lifting plate 24 and the entire packaging bag supported by the lifting plate 24 from the bottom down together. During descent, if the fish intestines exceed the inner cavity of the packaging bag, the convex roller 43 rotates again, gently pressing against the inner fish intestines. Under the pressure from both sides, the excess fish intestines fall from the top opening of the packaging bag to the outer surface of the guide ramps 45 on both sides, and finally fall into the recycling bin 37. During the downward movement of the packaging bag, it will be inside the channel of the mounting platform 31, so the bag opening will not tilt to both ends, but will maintain a stable opening posture, preparing for the next step of vacuum sealing. Until it approaches the vacuum sealing station from the bag support position, when the lower opening of the packaging bag is between the two sets of half molds 20, the sensing cylinder 18 is activated, pushing the sliding plates 17 on both sides and the half molds 20 to close horizontally. During the closing process, the half molds 20 will first clamp the opening edge of the packaging bag and seal it. After the mold is closed, the vacuum adsorption device 14 above releases the adsorption and moves away. Next, the vacuum negative pressure machine 21 starts, drawing a vacuum inside the clamped packaging bag through the air passage on the half-mold 20. Finally, the heating seal on the inner side of the half-mold 20 is heated by electricity, and the opening of the packaging bag is fused and sealed under pressure. After sealing, the induction cylinder 18 retracts, the half-mold 20 opens, and the vacuum-sealed packaging bag remains on the lifting plate 24. The U-shaped slide 8 continues to drive the lifting plate 24 down, so that the finished bag is completely removed from the sealing area. Subsequently, the finished bag falls naturally onto the material conveying mechanism 11 below under the worker's guidance and is transported out of the production line, completing the entire packaging process. The lifting plate 24 and the U-shaped slide 8 then return to their original positions and rise, ready to receive the next batch of packaging bags.

[0064] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed invention.

Claims

1. A vacuum packaging device for fish intestines, comprising a packaging cabinet (1), a feeding mechanism, and a vacuum packaging and sealing mechanism, characterized in that: A movable bag-supporting mechanism is provided above the packaging cabinet (1). An installation platform (31) is fixedly connected to the middle of the front outer wall of the packaging cabinet (1). Recycling components are provided on both sides of the installation platform (31). Side frames (9) are fixedly installed on both sides of the front outer wall of the packaging cabinet (1). A packaging bag placement mechanism is provided on the upper surface of one set of side frames (9). A top frame (4) is provided on the upper surface of both sets of side frames (9). A bag-moving mechanism is provided on one side of the top frame (4). The bag-moving mechanism is used to absorb packaging bags and move them to the packaging station. Two sets of symmetrically arranged flattening and extruding mechanisms are connected to the upper surface of the installation platform (31) through a U-shaped rod (46). The two sets of flattening and extruding mechanisms each include an L-shaped frame (39). A sorting frame (38) is fixedly installed on the upper part of the L-shaped frame (39). A sorting frame (38) is fixedly installed on both sides of the sorting frame (38). The clamping plate (44) has a connecting shaft (32) installed inside the two clamping plates (44) for rotation. The connecting shaft (32) is fixedly wrapped with a convex roller (43). The convex roller (43) is covered with a flexible pad. One end of the convex roller (43) is provided with a driving mechanism. The sorting frame (38) is fixedly installed with a guide plate (45) above the corresponding recycling component. The two sets of side frames (9) are installed with a U-shaped slide (8) on one side. The front end of the U-shaped slide (8) is fixedly installed with a second cylinder (25). The extension end of the second cylinder (25) is fixedly installed with a lifting plate (24). The middle of the mounting platform (31) is provided with a channel adapted to the sliding of the lifting plate (24). The two sides of the outer wall of the U-shaped slide (8) are fixedly installed with connecting blocks (27). The two sets of side frames (9) are respectively provided with a lead screw (10) and a guide rod (12).

2. The vacuum packaging device for fish intestines according to claim 1, characterized in that: The feeding mechanism includes a palletizing conveyor (2) fixedly installed on one side of the packaging cabinet (1). One end of the palletizing conveyor (2) extends out to the unloading conveyor belt (3). One end of the unloading conveyor belt (3) extends to the bottom of the top frame (4) and corresponds to the top of the filled packaging bag. A control box (16) is fixedly installed on the outside side of the packaging cabinet (1).

3. The vacuum packaging device for fish intestines according to claim 2, characterized in that: The vacuum packaging sealing mechanism includes support platforms (19) symmetrically installed on the outer wall of the front end of the packaging cabinet (1). Vacuum negative pressure machines (21) are fixedly installed above both sets of support platforms (19). A frame plate (22) is fixedly installed on the outer wall of the front end of the packaging cabinet (1) and above the vacuum negative pressure machine (21). An induction cylinder (18) is fixedly installed on one side of the outer wall of the frame plate (22). A sliding plate (17) is fixedly installed on the telescopic end of the induction cylinder (18). The sliding plate (17) is connected to a half mold (20) through multiple internally installed rods. The vacuum negative pressure machine (21) is connected to the half mold (20) through a vacuum negative pressure pipe. A heating seal is provided on the outer surface of the half mold (20) that is close to each other and near the top.

4. A vacuum packaging device for fish intestines according to claim 3, characterized in that: The packaging bag placement mechanism includes a support plate (29) fixedly installed on the upper surface of one of the side frames (9). A packaging bag sorting cabinet (6) with one end open is fixedly installed on the upper surface of the support plate (29). A slide (7) is slidably installed on one side inside the packaging bag sorting cabinet (6). Two connecting rods (34) are fixedly installed on the outside of one side of the slide (7). The ends of the two connecting rods (34) are connected to a bag-holding plate (35). A telescopic cylinder (33) is provided on the lower outside of the slide (7). One end of the telescopic cylinder (33) is fixedly installed on the upper surface of the side frame (9) at the corresponding position through a fixed seat (36).

5. A vacuum packaging device for fish intestines according to claim 4, characterized in that: The bag transfer mechanism includes a first cylinder (5) fixedly installed on one side of the outer wall of the top frame (4), and a vacuum suction bag mechanism (28) is fixedly installed at the telescopic end of the first cylinder (5).

6. A vacuum packaging device for fish intestines according to claim 5, characterized in that: The recycling assembly includes a recycling bin (37) that is mounted on the inside of the mounting platform (31), and a handle is fixedly installed on one side of the outer wall of the recycling bin (37).

7. A vacuum packaging device for fish intestines according to claim 6, characterized in that: The mobile bag-supporting mechanism includes a frame rail (13) fixedly installed above the packaging cabinet (1), a mobile platform (23) slidably installed above the frame rail (13), an electric push rod (15) fixedly installed on the outer side of one end of the mobile platform (23), the electric push rod (15) fixedly embedded inside the frame rail (13), a third cylinder fixedly installed on both sides above the mobile platform (23), a vacuum adsorption device (14) fixedly installed on the telescopic end of the third cylinder, the vacuum adsorption device (14) adsorbs on both sides of the packaging bag, thereby opening the packaging bag.

8. A vacuum packaging device for fish intestines according to claim 7, characterized in that: The drive mechanism includes a fixed frame (40) vertically mounted at the position corresponding to the connecting shaft (32). A rotary motor (42) is fixedly embedded in the upper part of the fixed frame (40). A second gear (41) is fixedly sleeved on the outside of the output end of the rotary motor (42). A first gear (30) is fixedly sleeved on one end of the connecting shaft (32). The first gear (30) and the second gear (41) are meshed and connected.

9. A vacuum packaging device for fish intestines according to claim 8, characterized in that: A servo motor (26) is fixedly installed at the lower end of the lead screw (10). The servo motor (26) is embedded in the lower part of the side frame (9). The end of the lead screw (10) away from the servo motor (26) is rotatably engaged with the upper part of the side frame (9). The guide rod (12) is fixedly connected to another set of side frames (9). The two sets of connecting blocks (27) are respectively fitted on the outside of the lead screw (10) and the guide rod (12). The connecting block (27) corresponding to the outside of the lead screw (10) is threadedly engaged with the lead screw (10). The connecting block (27) corresponding to the outside of the guide rod (12) is slidably engaged with the guide rod (12). A material conveying mechanism (11) is fixedly installed on the outer wall of the front end of the packaging cabinet (1) near the bottom.

10. A method for vacuum packaging fish intestines, using the vacuum packaging device for fish intestines as described in claim 9, characterized in that, Includes the following steps: S1: The packaging bags are arranged by the packaging bag placement mechanism. The first cylinder (5) of the bag transfer mechanism drives the vacuum bag suction mechanism (28) to pick up and transfer a single packaging bag to the packaging station. Then the vacuum adsorption device (14) of the bag support mechanism is moved to adsorb the inner walls on both sides of the packaging bag and open it up. S2: The feeding conveyor belt (3) of the feeding mechanism transports the single fish intestines in sequence and drops them into the opened packaging bag; S3: The rotary motor (42) of the drive mechanism starts, and the connecting shaft (32) and the convex roller (43) rotate in opposite directions through the meshing of the first gear (30) and the second gear (41). The flexible pad covering the convex roller (43) contacts the two ends of the fish intestine inside the bag, gently moves it to the middle of the packaging bag and flattens and centers it. Then the U-shaped slide (8) moves up and down, and flattens and squeezes the fish intestine inside the packaging bag. The excess fish intestine squeezed by the convex roller (43) is guided into the recycling bins (37) on both sides through the top of the packaging bag. S4: Then, driven by the U-shaped slide (8) and the lifting plate (24), it moves downward. Then, the induction cylinder (18) of the vacuum packaging sealing mechanism drives the two half molds (20) to close. The packaging bag is vacuumed and then heat-sealed by the heating seal. The packaged fish intestines fall onto the upper surface of the material conveying mechanism (11) and are then output through the material conveying mechanism (11) to complete the packaging.

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