A pipeline fish-packing film sealing device

Abstract

The application discloses a kind of pipeline grilled fish packaging film sealing devices, belong to food packaging equipment field.Device includes conveying pipeline, side limit seat, film supply mechanism, film sealing mechanism and cooling setting mechanism, conveying pipeline can continuously convey grilled fish box dish containing grilled fish box, side limit seat is limited to prevent deviation to conveying material.Film supply mechanism, film sealing mechanism and cooling setting mechanism are sequentially arranged along the conveying direction, and can sequentially complete automatic film supply, accurate film sealing and cooling setting operation.Film sealing mechanism adopts hierarchical operation mode, first tight fixed packaging film, then completes heat sealing process, simultaneously equipped with film guide structure and film clamping structure, which can ensure that the packaging film is transported smoothly, tensioned without deviation.Film sealing mechanism and side limit seat are slidingly connected, cooperate with the conveying action of the pipeline to complete the film pulling, and realize the automatic continuous film sealing processing of the grilled fish box. The operation stability and film sealing quality are good, and the overall operation efficiency of the pipeline grilled fish packaging is effectively improved.

Description

Technical Field

[0001] This invention relates to the field of food packaging equipment, specifically a production line packaging and sealing device for roasted fish. Background Technology

[0002] After seasoning, grilling, or pre-processing, grilled fish usually needs to be placed on a tray and covered with packaging film. The packaging film is then fixed to the edge of the tray by heat sealing to isolate the grilled fish from the external environment, which facilitates subsequent refrigeration, transportation, and sales. During the sealing process, the packaging film needs to be released stably first, and then the film surface is pressed tightly and heat-sealed along the perimeter of the tray.

[0003] Existing sealing devices have several defects: First, the equipment lacks an immediate cooling structure after sealing. After heat sealing, the sealing area remains hot, preventing the film from quickly setting. Relying solely on natural cooling easily leads to edge curling, film detachment, and poor sealing. Second, after heat sealing, the pressing frame only lifts vertically upwards. This lifting process directly pulls on the uncured seal, causing the seal to tear and the film to detach from the tray, resulting in a high defect rate. Third, there is no dedicated tensioning and guiding structure between the film roll and the sealing station. During film traction and conveying, the film is prone to slackness and lateral shift, creating wrinkles after spreading. When the film is pressed down for sealing, these wrinkles are pressed into the seal, resulting in uneven heat sealing force and seal width across the tray, leading to poor sealing. Conventional equipment cannot simultaneously solve the three problems of cooling and setting, demolding and tear prevention, and film tensioning and flattening, making it unsuitable for continuous, high-quality grilled fish packaging operations on production lines. Summary of the Invention

[0004] The purpose of this invention is to overcome the shortcomings of existing grilled fish sealing equipment, such as lack of immediate cooling, easy tearing of the frame during lifting without cooling the sealing edge, and loosening and wrinkling of the film during conveying, so as to improve the quality of the finished grilled fish box sealing product and enhance the stability of continuous sealing operation on the production line.

[0005] To achieve the above objectives, the present invention provides the following technical solution: A automated packaging and sealing device for grilled fish comprises a conveyor line, side limiting seats, a film feeding mechanism, a sealing mechanism, and a cooling and shaping mechanism. These mechanisms work together to automate the entire process of feeding, film feeding, pressing and sealing, and cooling and shaping. The conveyor line serves as the transport carrier for the entire machine. Grilled fish trays with their openings facing upwards are evenly arranged on the surface of the conveyor line. The trays contain the grilled fish boxes to be packaged, and the conveyor line continuously transports these boxes, enabling continuous batch packaging. The side limiting seats are arranged in pairs on both sides of the conveyor line. Their elongated structure effectively prevents the trays from shifting laterally during transport, providing precise positioning and guidance to ensure a stable transport path and prevent misalignment during subsequent sealing.

[0006] The film feeding mechanism, sealing mechanism, and cooling and shaping mechanism are installed sequentially above the conveyor line from top to bottom, arranged along the material conveying direction, to complete the film feeding, sealing, and shaping processes in an orderly manner. The film feeding mechanism, as the packaging film supply component, is supported by a support column fixed on the side limit seat. It loads a whole roll of packaging film through the film roll mounting shaft, and can stably and continuously output packaging film to provide film raw materials for the sealing operation.

[0007] The sealing mechanism is the core operating structure of the device, integrating pressing and sealing components. It employs a tiered operation mode: first, the pressing component completes the primary pressing and positioning of the packaging film; then, the sealing component completes the secondary heat sealing and bonding, stably heat-sealing the packaging film onto the opening of the grilled fish box, completing the core sealing process. Vertical support plates are installed on both sides of the sealing mechanism, serving as the load-bearing base for the upper structure. These vertical support plates slide in conjunction with side limiting seats, and longitudinal displacement cylinders on the side limiting seats drive the entire vertical support plate to slide back and forth along the conveyor line. During the heat sealing process and the slight lifting of the pressing frame, the longitudinal displacement cylinders drive the entire pressing structure to retract backward, creating relative sliding with the forward-conveyed tray along the film surface, preventing tearing of the uncooled seal during vertical lifting. Simultaneously, the sliding structure coordinates with the material movement on the conveyor line to synchronously pull the film, ensuring precise and controllable film delivery length.

[0008] A fixed crossbeam is mounted at the top of the vertical support plates, serving as the mounting base for various drive components. A heat-sealing cylinder is centrally mounted on the fixed crossbeam, with clamping cylinders symmetrically arranged on both sides, forming a symmetrical operating structure of central heat sealing and lateral clamping. The core of the clamping component is a rectangular clamping frame that matches the size of the grilled fish box tray. The left and right sides of the clamping frame are fixed to the cylinder shafts of the clamping cylinders, which drive it downwards to flatten and clamp the packaging film, preventing film displacement and wrinkles during the sealing process. The sealing component is equipped with a heat-sealing plate, which is fixed to the bottom of the cylinder shaft of the heat-sealing cylinder. It can be independently driven downwards by the heat-sealing cylinder, allowing the heat-sealing plate to independently press down and complete the heat sealing operation after being clamped and positioned by the clamping frame.

[0009] A heat-sealing shaft sliding hole is provided in the middle of the clamping frame, allowing the cylinder shaft of the heat-sealing cylinder to pass through and slide vertically, ensuring that the extension and retraction of the heat-sealing cylinder is uninterrupted. A vertically positioned guide pin is fixed at the top of the heat-sealing plate, and a matching pin sliding hole is provided on the clamping frame. The guide pin is inserted into the pin sliding hole and slides vertically. Through the limiting and guiding effect of the guide pin, the heat-sealing plate is kept in a horizontal state during the up and down extension and retraction, avoiding heat sealing deviation and improving heat sealing accuracy.

[0010] A guide roller is installed upstream of the pressing component. The guide roller connects to the packaging film roll of the film supply mechanism and guides the exported packaging film, thus regulating the film's transport path. A rectangular frame-shaped guide frame is installed at the bottom of the guide roller near the film roll mounting shaft. Inside the guide frame are two horizontal bars parallel to the guide roller. The packaging film is exported from the film roll mounting shaft, guided by the guide roller, and then inserted between the two horizontal bars. By increasing the contact friction of the film, the packaging film is effectively tightened, preventing film slack, deviation, and vibration, and ensuring that the film is always fed flat and stable.

[0011] A film clamping plate is installed downstream of the pressing component. The bottom end of the film clamping plate is flush with the bottom end of the pressing frame to ensure a uniform operating standard for the entire machine's pressing and clamping structure. A movable clamping plate is installed above the film clamping plate. Multiple sets of clamping springs are arranged between the movable clamping plate and the film clamping plate. The elastic thrust of the clamping springs drives the movable clamping plate to adhere to the film clamping plate, achieving elastic clamping and fixing of the packaging film. When the equipment is first started, the film clamping plate clamps the end of the film, completing the initial film laying and pressing. After the film end is released, the packaging film adheres to the surface of the packaging box, and the film clamping plate no longer clamps the film. A movable pin is inserted inside each set of clamping springs. A clamping plate seat is fixedly installed above the clamping springs. The clamping plate seat is fixed to the side of the pressing frame, providing a fixed support. Fixed shafts are installed at both ends of the clamping plate seat. The lower end of the fixed shaft is fixedly connected to the film clamping plate, and the upper end passes through the movable clamping plate and forms a sliding fit with it, realizing the vertical sliding guidance of the movable clamping plate. Meanwhile, the movable clamping plate is fixedly connected to the movable pin, and the movable pin slides with the clamping plate seat, further improving the stability of the movable clamping plate during opening, closing, and pressing. Downward-extending abutment posts are set at both ends of the movable clamping plate, with the lower end of the abutment post extending beyond the bottom surface of the clamping plate. When the pressing frame presses down, the abutment post contacts the fish box first, causing the box to lift the movable clamping plate upwards, automatically releasing the packaging film for easy film spreading and pressing.

[0012] The bottom of the vertical support plate has a sliding hole, and the side limit seat has a limit groove. The limit groove is equipped with a sliding rod, which passes through the sliding hole of the plate, so that the vertical support plate is inserted into the limit groove. The whole plate slides precisely along the sliding rod. With the driving action of the longitudinal movement cylinder, the sliding structure moves synchronously with the material on the production line to complete the film pulling operation, which greatly improves the stability of film feeding.

[0013] The cooling and shaping mechanism is located downstream of the sealing mechanism to rapidly cool and shape the heat-sealed packaging film, preventing rebound, wrinkling, and edge curling. The cooling and shaping mechanism's condensing roller is positioned close to the surface of the packaging film, allowing direct contact and cooling. Both ends of the condensing roller are fixed to side limit seats via condensing roller seats, enabling rotatable installation and ensuring smooth contact between the film and the condensing roller during transport. A condensing pipe connects the condenser to the internal cavity of the condensing roller and is rotatably connected to it, continuously supplying a condensing medium to the condensing roller for circulating cooling, ensuring continuous cooling and shaping, and effectively improving the forming quality and sealing performance of the sealed fish box.

[0014] Compared to existing traditional grilled fish box sealing and packaging equipment, this invention optimizes the overall structural layout and improves the film feeding clamping, sealing and pressing, sliding demolding, and cooling and shaping structures. It offers numerous advantages, including high automation, superior sealing accuracy, excellent packaging quality, stable equipment operation, and strong adaptability, as detailed below: 1. Precise material feeding eliminates packaging alignment deviations. This device features pairs of long, strip-shaped side limit seats on both sides of the conveyor line, which can limit and correct the position of the grilled fish box trays throughout the conveying process. This effectively prevents the grilled fish box trays from shifting or shaking during transport, ensuring that each grilled fish box is precisely aligned with the sealing station. This eliminates problems such as misalignment, deviation, and uneven sealing caused by material offset from the source, ensuring consistency in batch packaging operations.

[0015] 2. Stable and flat film feeding, completely solving the problem of film looseness and deviation. The device is equipped with an independent film supply mechanism, which can continuously and stably supply packaging film. At the same time, a rectangular frame-shaped film guide is added to the bottom of the guide roller. Two parallel limiting crossbars increase the contact friction with the packaging film, and tension and limit the packaging film during the conveying process. This effectively avoids problems such as looseness, shaking, deviation, and wrinkles in the packaging film during the conveying process, ensuring that the film is fed flat and neat throughout the process, laying the foundation for high-precision sealing operations.

[0016] 3. The tiered sealing process significantly improves sealing accuracy and adhesion. This invention employs a two-stage operation structure: first, pressing and positioning, then heat sealing and bonding. Symmetrically arranged pressing cylinders drive the pressing frame downwards, pressing the packaging film flat and firmly onto the opening of the grilled fish box, achieving precise film positioning. Then, a centrally located heat-sealing cylinder independently drives the heat-sealing plate downwards for heat sealing. Combined with a vertical sliding guide structure using guide pins and corresponding sliding holes, this ensures the heat-sealing plate remains horizontally and vertically raised and lowered, preventing heat sealing misalignment and tilting. This results in a tight fit between the packaging film and the box opening, with uniform and secure sealing edges, significantly improving the quality of the sealing process.

[0017] 4. The automatic film-releasing structure is rationally designed and adaptable to automated operations. By setting downward-extending abutment columns at both ends of the movable clamping plate, the box body is pushed back during compression, automatically driving the movable clamping plate to separate from the film clamping plate and release the packaging film, eliminating the need for manual assistance. This structure only clamps and fixes the film end during the initial startup of the equipment, completing the initial film laying and positioning. Subsequent cyclic operations rely on the already adhered and fixed packaging film to complete continuous film feeding and sealing. The structure has strong adaptability, a high degree of automation, effectively simplifies the equipment's operating logic, and improves operational smoothness.

[0018] 5. Slow-release sliding structure prevents tearing and damage to uncured sealing edges. After sealing, the vertical support plate is slightly moved backward along the sliding groove and sliding rod structure of the side limit seat by a longitudinal cylinder. This, combined with the forward movement of materials on the production line, creates relative sliding, allowing the pressing frame to slowly detach from the heat-sealed film. Compared to the traditional direct lifting and pressing structure, this effectively prevents the heat-sealed edges from being pulled, lifted, or torn before they have fully cooled and cured, completely solving the problems of edge curling, film detachment, and damage after sealing, and significantly improving the finished product qualification rate.

[0019] 6. Real-time cooling and shaping ensures excellent packaging results and high stability. An independent cooling and shaping mechanism is set up downstream of the sealing mechanism. A circulating cooling condensing roller rolls closely adhere to the surface of the heat-sealed packaging film for rapid cooling and shaping. This accelerates the adhesion and curing of the packaging film to the opening of the grilled fish box, effectively preventing the heat-sealed film from springing back, wrinkling, and curling, improving the packaging's sealing performance and appearance flatness, and ensuring stable product packaging quality.

[0020] 7. Excellent structural coordination, suitable for high-efficiency batch production line operations. The whole machine integrates automatic feeding, film feeding, pressing, heat sealing, slow release, cooling and shaping. The various mechanisms work in an orderly and coordinated manner, which can realize continuous automated sealing and packaging of grilled fish boxes without manual intervention, greatly reducing labor costs and significantly improving the efficiency of production line packaging operations, and is suitable for large-scale, batch chemical production needs. Attached Figure Description

[0021] Figure 1 This is a three-dimensional structural diagram of a packaging and sealing device for grilled fish on an assembly line.

[0022] Figure 2 This is a three-dimensional structural diagram of a packaging and sealing device for grilled fish on an assembly line, taken from another angle.

[0023] Figure 3 for Figure 2 Enlarged view of point A in the image.

[0024] Figure 4 This is a three-dimensional structural diagram of the sealing mechanism in a packaging and sealing device for grilled fish on an assembly line.

[0025] Figure 5 This is a three-dimensional structural diagram of the film clamping plate and its connecting components in a packaging and sealing device for grilled fish on an assembly line.

[0026] Figure 6 This is a three-dimensional structural diagram of the guide roller and guide frame in a packaged sealing device for grilled fish on an assembly line.

[0027] Figure 7 This is a three-dimensional structural diagram of the cooling and shaping mechanism in a packaging and sealing device for grilled fish on an assembly line.

[0028] Figure 8This is a three-dimensional structural diagram of the pressing frame in a packaging and sealing device for grilled fish on an assembly line.

[0029] In the diagram, 1. Conveying line; 2. Side limiting seat; 3. Film supply mechanism; 4. Sealing mechanism; 5. Cooling and shaping mechanism; 12. Grilled fish tray; 21. Limiting groove; 22. Sliding rod; 31. Support column; 32. Film roll mounting shaft; 41. Pressing component; 42. Sealing component; 44. Vertical support plate; 441. Vertical plate sliding hole; 45. Longitudinal movement cylinder; 46. Guide roller; 47. Clamping plate; 48. Fixed crossbar. Beam; 411, clamping cylinder; 412, clamping frame; 413, heat sealing shaft sliding hole; 414, pin sliding hole; 421, heat sealing cylinder; 422, heat sealing plate; 423, guide pin; 461, guide film frame; 471, movable clamping plate; 472, clamping plate spring; 473, movable pin; 474, clamping plate seat; 475, fixed shaft; 476, abutment column; 51, condensing roller; 52, condensing roller seat; 53, condensing pipe. Detailed Implementation

[0030] This embodiment discloses a conveyor belt for packaging and sealing grilled fish. The device consists of a conveyor belt 1, side limiting seats 2, a film supply mechanism 3, a sealing mechanism 4, and a cooling and shaping mechanism 5. The surface of the conveyor belt 1 is evenly arranged with grilled fish trays 12 facing upwards. Grilled fish boxes to be sealed are placed inside the trays 12, allowing for continuous material conveying to complete batch packaging operations. The side limiting seats 2 are elongated structures, installed in pairs on the left and right sides of the conveyor belt 1, preventing lateral deviation of the grilled fish trays 12 during conveying and achieving precise material positioning and guidance.

[0031] The film supply mechanism 3, sealing mechanism 4, and cooling and shaping mechanism 5 are sequentially mounted above the conveyor line 1 along the material conveying direction. The film supply mechanism 3 includes a support column 31 and a film roll mounting shaft 32. The support column 31 is fixed on the side limiting seat 2, and the film roll mounting shaft 32 is used to mount and carry the packaging film roll, continuously supplying packaging film for the sealing operation.

[0032] The sealing mechanism 4 includes a pressing component 41 and a sealing component 42, which respectively complete the primary pressing and positioning of the packaging film and the secondary heat sealing and bonding operation. Vertical support plates 44 are provided on both sides of the sealing mechanism 4. The bottom of each vertical support plate 44 has a sliding hole 441. A side limiting seat 2 has a limiting groove 21, inside which a sliding rod 22 is installed. The sliding rod 22 passes through the sliding hole 441, allowing the vertical support plate 44 to be engaged in the limiting groove 21 and slide along the sliding rod 22. A longitudinal movement cylinder 45 is installed on the side limiting seat 2 to drive the vertical support plate 44 to slide as a whole, enabling synchronous film pulling operations in conjunction with the assembly line conveyor.

[0033] A fixed crossbeam 48 is fixedly mounted on the top of the vertical support plates 44 on both sides. A heat-sealing cylinder 421 is installed in the center of the fixed crossbeam 48, and a clamping cylinder 411 is installed symmetrically on the left and right sides. The clamping component 41 is equipped with a rectangular clamping frame 412 that matches the size of the grilled fish box plate 12. The top two sides of the clamping frame 412 are fixed to the bottom end of the cylinder shaft of the clamping cylinder 411. A heat-sealing shaft sliding hole 413 is opened in the middle of the clamping frame 412. The cylinder shaft of the heat-sealing cylinder 421 passes through the heat-sealing shaft sliding hole 413 and slides vertically. The heat-sealing cylinder 421 has a heat-sealing plate 422 fixed at the bottom of the cylinder shaft. The heat-sealing plate 422 is located inside the lower part of the clamping frame 412 and can extend and retract independently. The top of the heat-sealing plate 422 has a vertical guide pin 423 fixed. The clamping frame 412 has a pin sliding hole 414. The guide pin 423 passes through the pin sliding hole 414 to form a sliding guide structure.

[0034] Upstream of the pressing component 41, a guide roller 46 is installed. The guide roller 46 connects to the film roll mounting shaft 32 to guide the film feeding. Near the film roll mounting shaft 32 at the bottom of the guide roller 46, a rectangular frame-shaped guide frame 461 is provided. The guide frame 461 has two horizontal bars parallel to the guide roller 46. The packaging film is inserted between the two horizontal bars, relying on friction to tension the film and prevent slack or deviation during film feeding. Downstream of the pressing component 41, a clamping plate 47 is installed. The bottom end of the clamping plate 47 is flush with the bottom end of the pressing frame 412. Above the clamping plate 47, a movable clamping plate 471 is provided. Multiple clamping springs 472 are arranged between the two, which can push the movable clamping plate 471 to press the clamping plate 47, thus clamping the film. Each clamping spring 472 has a movable pin 473 inside. The clamping frame 412 is fixed to the side of the clamping plate seat 474. The clamping plate seat 474 has fixed shafts 475 at both ends. The lower end of the fixed shaft 475 is fixed to the film plate 47, and the upper end slides through the movable clamping plate 471. The movable clamping plate 471 is fixed to the movable pin 473, and the movable pin 473 is slidably engaged with the clamping plate seat 474. The movable clamping plate 471 has downwardly extending abutment posts 476 fixed at both ends. The lower end of the abutment post 476 extends beyond the height of the bottom end of the film plate 47. When the clamping frame 412 presses down, the abutment post 476 will first contact the box body on the grilled fish box tray 12. The box body pushes the movable clamping plate 471 upward in the opposite direction. The movable clamping plate 471 overcomes the elastic force of the clamping spring 472 and slides upward. The movable clamping plate 471 and the film plate 47 separate and release the packaging film. When the equipment is started for the first time, the clamping plate 47 clamps the end of the film body to complete the initial film laying and pressing. After the end of the film body is released after pressing, the packaging film is attached to the surface of the grilled fish packaging box during subsequent operations, and the clamping plate 47 no longer clamps the film body.

[0035] The cooling and shaping mechanism 5 is located downstream of the sealing mechanism 4 and includes a condensing roller 51, a condensing roller seat 52, and a condensing pipe 53. The condensing roller seat 52 is fixed on the side limiting seat 2 and the condensing roller 51 is rotatably mounted thereon. The condensing pipe 53 connects the condenser and the interior of the condensing roller 51 and can continuously introduce a condensing medium to contact and cool and shape the heat-sealed packaging film.

[0036] The complete operating process of the equipment is as follows: Conveyor line 1 continuously drives the grilled fish box tray 12, which carries the grilled fish boxes, forward at a constant speed. The side limit seats 2 on both sides restrict the left and right swaying and deviation of the grilled fish box tray 12 throughout the process. The film roll mounting shaft 32 continuously releases the packaging film. The packaging film is first guided by the guide roller 46, and then inserted between the two crossbars of the guide frame 461. The film body is continuously tightened by the friction of the contact surface to prevent loosening and deviation during the film feeding process. When the equipment is run for the first time, the end of the packaging film is clamped and fixed by the clamping plate 47 and the movable clamping plate 471. The clamping spring 472 continuously provides clamping force to keep the film body taut.

[0037] After the grilled fish box tray 12 is accurately delivered to the sealing station, the conveyor line 1 pauses briefly. The pressing cylinder 411 extends downward, driving the pressing frame 412 to press down as a whole. During the pressing process, the abutment posts 476 at both ends of the movable clamping plate 471 first contact the grilled fish box. The box body pushes the abutment posts 476 upward. The movable clamping plate 471 slides upward along the fixed shaft 475, compressing the clamping plate spring 472. The movable clamping plate 471 and the film clamping plate 47 separate, releasing the packaging film end. The pressing frame 412 immediately moves downward to flatten and compact the packaging film against the opening of the grilled fish box, completing the film positioning. Subsequently, the heat sealing cylinder 421 extends downward separately. The cylinder shaft of the heat sealing cylinder 421 slides along the heat sealing shaft sliding hole 413. The heat sealing plate 422 presses down simultaneously. The guide pin shaft 423 slides vertically along the pin shaft sliding hole 414 to limit the movement, ensuring that the heat sealing plate 422... The film is pressed horizontally to complete the heat sealing between the packaging film and the box opening. After the film end is released, the packaging film is fixed above the packaging box in subsequent cycle processes, and there is no film clamping between the film clamping plate 47 and the movable clamping plate 471.

[0038] After the heat sealing process is completed, the packaging film at the box opening has not yet cooled and solidified. If the pressing frame 412 is lifted quickly and directly, it is very easy to pull and lift the uncooled seal. At this time, the equipment performs a coordinated separation action: first, the pressing frame 412 is lifted slightly; then the longitudinal movement cylinder 45 is activated. The longitudinal movement cylinder 45 pulls the vertical support plate 44 and slides it slightly backward along the sliding rod 22 inside the limit slide groove 21, causing the entire pressing and heat sealing pressing structure to move backward synchronously; at the same time, the conveyor line 1 is started to slowly convey the grilled fish box tray 12 forward. The backward movement of the pressing structure and the forward movement of the material form a relative sliding, and the pressing frame 412 slowly separates from the heat sealing film at the box opening, without generating an upward pulling force on the uncooled seal.

[0039] During the relative sliding separation process, the pressing cylinder 411 slowly retracts its cylinder shaft, causing the pressing frame 412 to lift smoothly upwards; the heat-sealing cylinder 421 retracts simultaneously, and the heat-sealing plate 422 moves upwards accordingly, completely detaching the entire pressing structure from the grilled fish box. At this time, the conveyor line 1 continues to move forward, and the grilled fish box tray 12, which has completed heat sealing, immediately moves to the downstream cooling and shaping mechanism 5. The upper surface of the packaging film is attached to the condensing roller 51, and the condensing pipe 53 continuously conveys a low-temperature medium to the condensing roller 51. The condensing roller 51 continuously rolls in contact with the packaging film, quickly cooling and shaping the heat-sealed edges, ensuring that the packaging film adheres firmly to the box opening, preventing edge curling and film detachment.

[0040] After cooling, the grilled fish boxes are continuously fed out by the conveyor line 1. At the same time, the film supply mechanism 3 releases the corresponding length of packaging film. The film tension is maintained by the film guide frame 461. The equipment repeats the above processes of film feeding, pressing, heat sealing, collaborative separation, and cooling to complete the continuous automated grilled fish box sealing operation on the production line.

[0041] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A packaging and sealing device for roasted fish on an assembly line, characterized in that, It includes a conveyor line (1), a side limiting seat (2), a film supply mechanism (3), a film sealing mechanism (4), and a cooling and shaping mechanism (5); the conveyor line (1) is evenly arranged with the box opening facing upwards in a grilled fish box tray (12); the side limiting seats (2) are arranged in pairs on both sides of the conveyor line (1); the film supply mechanism (3), the film sealing mechanism (4), and the cooling and shaping mechanism (5) are all mounted above the conveyor line (1); the cooling and shaping mechanism (5) is located downstream of the film sealing mechanism (4).

2. The automated grilled fish packaging and sealing device according to claim 1, characterized in that, The cooling and shaping mechanism (5) includes a condensing roller (51) that is closely attached to the packaging film surface, a condensing roller seat (52) that is fixed to the side limiting seat (2) and rotatably connected to both ends of the condensing roller (51), and a condensing pipe (53) that connects the interior of the condensing roller (51) to the condenser and rotatably connected to the condensing roller (51).

3. The automated grilled fish packaging and sealing device according to claim 2, characterized in that, The sealing mechanism (4) includes a pressing component (41) for pressing the packaging film under primary pressure and a sealing component (42) for pressing the packaging film under secondary pressure to heat seal it to the opening of the grilled fish box. The sealing mechanism (4) has vertical support plates (44) on both sides. The vertical support plates (44) are slidably connected to the side limit seat (2) along the conveying line direction. The side limit seat (2) is provided with a longitudinal movement cylinder (45) for driving the vertical support plates (44) to slide. A guide roller (46) is provided on the upstream side of the pressing component (41). The guide roller (46) is connected to the packaging film roll of the film supply mechanism (3). A clamping plate (47) for clamping the packaging film is provided on the downstream side of the pressing component (41).

4. The automated grilled fish packaging and sealing device according to claim 3, characterized in that, The top of the vertical support plates (44) on both sides are fixedly mounted with a fixed crossbeam (48); a heat sealing cylinder (421) and a pressing cylinder (411) are vertically fixedly installed on the fixed crossbeam (48). The heat sealing cylinder (421) is centrally located, and the pressing cylinder (411) is symmetrically arranged on the left and right sides of the heat sealing cylinder (421). The pressing component (41) includes a rectangular pressing frame (412) that matches the size of the grilled fish box plate (12). The top left and right sides of the pressing frame (412) are fixedly connected to the bottom of the cylinder shaft of the corresponding pressing cylinder (411). The bottom of the cylinder shaft of the heat sealing cylinder (421) is fixedly connected to a heat sealing plate (422). The heat sealing plate (422) is located on the lower inner side of the pressing frame (412) and can move downward independently relative to the pressing frame (412).

5. The automated grilled fish packaging and sealing device according to claim 4, characterized in that, The clamping frame (412) has a heat sealing shaft sliding hole (413) in the middle for the cylinder shaft of the heat sealing cylinder (421) to pass through. The cylinder shaft of the heat sealing cylinder (421) passes through the heat sealing shaft sliding hole (413) and slides vertically with the clamping frame (412).

6. The automated grilled fish packaging and sealing device according to claim 5, characterized in that, The top surface of the heat-sealing plate (422) is fixed with a vertically arranged guide pin (423). The clamping frame (412) has a pin sliding hole (414) that corresponds one-to-one with the guide pin (423). The guide pin (423) passes through the pin sliding hole (414) and slides vertically with the clamping frame (412).

7. The automated grilled fish packaging and sealing device according to claim 3, characterized in that, A film guide frame (461) is provided on the bottom side of the film guide roller (46) near the film roll mounting shaft (32); the bottom end of the film guide frame (461) is flush with the bottom end of the pressing frame (412); the film guide frame (461) is a rectangular frame structure containing two horizontal bars parallel to the film guide roller (46); the packaging film is led out from the film roll mounting shaft (32) and passes around the film guide roller (46) before being inserted between the two horizontal bars.

8. The automated grilled fish packaging and sealing device according to claim 3, characterized in that, The bottom end of the clamping plate (47) is flush with the bottom end of the pressing frame (412); a movable clamping plate (471) is provided above the clamping plate (47), and several clamping springs (472) are provided between the movable clamping plate (471) and the clamping plate (47). The clamping springs (472) push the movable clamping plate (471) to press the clamping plate (47) to form a clamping fit.

9. The automated grilled fish packaging and sealing device according to claim 8, characterized in that, Each clamping spring (472) has a movable pin (473) inside; a clamping plate seat (474) is provided above the clamping spring (472), and the clamping plate seat (474) is fixed to the side of the clamping frame (412); a fixed shaft (475) is provided at both ends of the clamping plate seat (474), the lower end of the fixed shaft (475) is fixedly connected to the clamping plate (47), the fixed shaft (475) passes through the movable clamping plate (471) and slides with the movable clamping plate (471); the movable clamping plate (471) is fixedly connected to the movable pin (473), and the movable pin (473) slides with the clamping plate seat (474); downward extending abutment posts (476) are fixedly provided at both ends of the movable clamping plate (471), and the lower end of the abutment post (476) extends beyond the height of the bottom end of the clamping plate (47).

10. A packaging and sealing device for roasted fish on an assembly line according to claim 3, characterized in that, The bottom of the vertical support plate (44) is provided with a sliding hole (441); the side limiting seat (2) is provided with a limiting groove (21), and a sliding rod (22) is installed inside the limiting groove (21). The sliding rod (22) passes through the sliding hole (441) of the plate, and the vertical support plate (44) is inserted into the limiting groove (21) and slides along the sliding rod (22).

Images