A pre-packaged food preservation film sealing device

Abstract

The utility model discloses a kind of pre-prepared dish preservative film sealing device, including bottom plate, the outer frame of bottom plate top end fixed connection, the cylinder of outer frame inner wall fixed sleeve joint, the heat sealing module of cylinder output end fixed connection, the preservation box of heat sealing module bottom end setting: fixed mechanism, including transmission shaft, transmission shaft outer wall fixed sleeve joint transmission rod three, transmission rod three both ends hinged transmission rod two, rack hinged to transmission rod two outer end, the two groups of gear of rack outer wall meshing, the transmission rotating rod of the inner wall fixed sleeve joint of gear, transmission rotating rod top end fixed sleeve joint transmission rod one, realize automatic packaging, can replace artificial to complete packing box conveying, positioning and sealing whole process, greatly reduce manpower input and improve packaging efficiency, adapt to large-scale production, simultaneously, can let film and box mouth closely adhere, effectively avoid wrinkle, bubble and other problems, ensure that film sealing effect is smooth, both enhance sealing property to extend preservation period, also improve product appearance regularity.

Description

Technical Field

[0001] This utility model relates to the field of pre-prepared food preservation technology, and in particular to a sealing device for pre-prepared food preservation. Background Technology

[0002] Pre-prepared food preservation sealing devices are packaging equipment specifically designed for pre-prepared foods. Their core function is to isolate air, moisture, and microorganisms through film covering and sealing technology. They typically use food-grade films (such as PE or PP films) and are combined with heating, vacuum, or pressure systems to quickly seal pre-prepared food packaging, delaying oxidation and spoilage, extending shelf life, and maintaining the taste and nutritional value of the food. They are widely used in pre-prepared food production plants, central kitchens, and other settings to ensure the freshness of food during transportation and storage.

[0003] Currently, many pre-prepared food sealing devices still rely on manual operation, requiring staff to place and retrieve pre-prepared food packaging boxes one by one. This model not only makes the sealing process cumbersome and difficult to achieve continuous operation, significantly reducing overall production efficiency, but also requires a large investment of manpower to maintain operation. In the long run, this will significantly increase the company's labor costs, which is not conducive to cost control and efficiency improvement in the large-scale production of pre-prepared foods. Utility Model Content

[0004] This invention provides a sealing device for pre-prepared vegetables to solve the above-mentioned problems.

[0005] This utility model provides a sealing device for pre-prepared vegetables, including a base plate, an outer frame fixedly connected to the top of the base plate, a cylinder fixedly sleeved on the inner wall of the outer frame, a heat sealing module fixedly connected to the output end of the cylinder, and a preservation box set at the bottom of the heat sealing module:

[0006] The fixing mechanism includes a drive shaft, a third drive rod fixedly sleeved on the outer wall of the drive shaft, a second drive rod hinged at both ends of the third drive rod, a rack hinged at the outer edge of the second drive rod, two sets of gears meshing on the outer wall of the rack, a drive rotating rod fixedly sleeved on the inner wall of the gear, and a first drive rod fixedly sleeved at the top end of the drive rotating rod, used to limit and fix the food storage box when sealing the film.

[0007] The detection device, located inside the fixing mechanism, includes a detection module fixedly connected to the top of the base plate, a trigger push block attached to the top of the detection module, and a detection pressure block fixedly connected to the top of the trigger push block, used to detect when the food storage box reaches the predetermined position.

[0008] In a pre-prepared vegetable preservation sealing device according to one embodiment of the present invention, two sets of side plates are fixedly connected to the top of the bottom plate, and multiple sets of material transfer rollers are movably sleeved on the opposite sides of the two sets of side plates. A preservation box is provided at the top of the material transfer rollers.

[0009] In a pre-prepared vegetable preservation sealing device according to one embodiment of the present invention, the detection block is triangular, and the top of the detection block is attached to the bottom of the preservation box.

[0010] In a pre-prepared vegetable preservation sealing device according to one embodiment of the present invention, one end of a spring is fixedly connected to the bottom end of the detection block, and the other end of the spring is fixedly connected to the base plate.

[0011] In a pre-prepared vegetable preservation sealing device according to one embodiment of the present invention, the outer side of each side plate is fixedly connected with a limiting block, and the inner wall of the limiting block is movably sleeved with two sets of transmission rods.

[0012] In a pre-prepared food preservation sealing device according to one embodiment of the present invention, four sets of fitting support blocks are movably sleeved on the outer wall of the preservation box, and the outer walls of the four sets of fitting support blocks are fixedly connected to a transmission rod.

[0013] In a pre-prepared vegetable preservation sealing device according to one embodiment of the present invention, the bottom plate has two sets of sliding grooves inside, and a limiting slider is slidably sleeved inside each of the two sets of sliding grooves. The limiting slider is elliptical in shape, and the top of the limiting slider is fixedly connected to a rack.

[0014] The technical solutions provided in this application embodiment can include the following beneficial effects: This application designs a sealing film device for pre-prepared vegetables, which realizes automatic sealing and can replace manual labor to complete the entire process of packaging box transportation, positioning and sealing, greatly reducing manpower input and improving sealing efficiency. It is suitable for large-scale production. At the same time, it can make the film fit tightly with the box opening, effectively avoiding problems such as wrinkles and bubbles, ensuring a smooth sealing effect, which not only enhances the sealing performance to extend the shelf life, but also improves the regularity of the product appearance.

[0015] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and do not limit this application. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the structure of a sealing device for pre-prepared vegetables according to an embodiment of this application;

[0018] Figure 2 yes Figure 1 A schematic diagram of the cross-sectional structure;

[0019] Figure 3 yes Figure 1 A schematic diagram of a partial structure;

[0020] Figure 4 yes Figure 1 A schematic diagram of a partial cross-section structure;

[0021] Figure 5 yes Figure 1 The bottom structure diagram.

[0022] Explanation of reference numerals in the attached figures:

[0023] 1. Base plate; 2. Outer frame; 3. Cylinder; 4. Heat sealing module; 5. Food storage container; 6. Transmission rod one; 7. Side plate; 8. Material transfer roller; 9. Spring; 10. Detection pressure block; 11. Transmission shaft; 12. Fitting support block; 13. Transmission rotating rod; 14. Limiting connecting block; 15. Gear; 16. Trigger push block; 17. Detection module; 18. Rack; 19. Transmission rod two; 20. Transmission rod three; 21. Limiting slider. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0025] In the description of this application, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of the stated features. In the description of this application, "a plurality of" means two or more, unless otherwise explicitly specified.

[0026] The following detailed description of some embodiments of this application is provided in conjunction with the accompanying drawings. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0027] like Figures 1 to 5 As shown, this application provides a sealing device for pre-prepared vegetables, comprising a base plate 1, an outer frame 2 fixedly connected to the top of the base plate 1, a cylinder 3 fixedly sleeved on the inner wall of the outer frame 2, a heat sealing module 4 fixedly connected to the output end of the cylinder 3, and a preservation box 5 disposed at the bottom of the heat sealing module 4, characterized in that:

[0028] The fixing mechanism includes a drive shaft 11, a drive rod 20 fixedly sleeved on the outer wall of the drive shaft 11, a drive rod 19 hinged at both ends of the drive rod 20, a rack 18 hinged to the outer edge of the drive rod 19, two sets of gears 15 meshing on the outer wall of the rack 18, a drive rotating rod 13 fixedly sleeved on the inner wall of the gears 15, and a drive rod 6 fixedly sleeved at the top end of the drive rotating rod 13, which is used to limit and fix the food storage box 5 when sealing the film;

[0029] The detection device, located inside the fixing mechanism, includes a detection module 17 fixedly connected to the top of the base plate 1, a trigger push block 16 attached to the top of the detection module 17, and a detection pressure block 10 fixedly connected to the top of the trigger push block 16, which are used to detect when the food storage box 5 reaches the predetermined position.

[0030] After adopting the above technical solution, when the food preservation box 5 to be sealed is placed on the material transfer roller 8, multiple sets of material transfer rollers 8 are driven by an external power source to rotate synchronously and uniformly. The food preservation box 5 moves towards the lower end of the heat sealing module 4 as the rollers rotate. During this process, when the food preservation box 5 is about to reach the preset heat sealing position, its bottom end will first come into contact with the upper surface of the detection pressure block 10. As the material transfer roller 8 continues to convey, the food preservation box 5 will push the detection pressure block 10 to move smoothly downwards on the relative inner side of the two sets of material transfer rollers 8 until the trigger push block 16 at the bottom of the detection pressure block 10 completely contacts the detection module 17 below. At this time, the detection module 17 will immediately convert the mechanical contact signal into an electrical signal and transmit the signal to the main control system of the equipment. After receiving the signal, the main control system quickly controls the external power source to start the drive shaft 11, so that the drive shaft 11 rotates stably in the bearing seat inside the base plate 1. The rotation of the drive shaft 11 will synchronously drive the transmission rod 20 connected to it to rotate in a circle. During rotation, transmission rod 3 20 pulls transmission rod 2 19 on both sides to rotate synchronously around a fixed axis via hinge points at both ends. The other end of transmission rod 2 19 is connected to rack 18, which in turn pulls rack 18 to move horizontally on opposite sides of the two sets of gears 15. During the movement of rack 18, its teeth precisely mesh with the teeth of gear 15, causing gear 15 to rotate synchronously. Gear 15 is then fixedly connected to transmission rod 13 via splines, ultimately causing transmission rod 13 to drive the four sets of transmission rod 1 6 at the top to rotate synchronously inward. When the extended ends of the four sets of transmission rod 1 6 are fully in contact with the four sides of the food storage container 5, the food storage container 5 is centered and fixed, ensuring that the food storage container 5 is precisely adjusted to the preset heat-sealing position. After position calibration, the pneumatic system of the equipment drives cylinder 3, causing the output end of cylinder 3 to move the heat-sealing module 4 downwards at a uniform speed until the heat-sealing surface of the heat-sealing module 4 is completely in contact with the top outer edge of the food storage container 5. At this point, the heat-sealing module 4 activates its heating function to heat-press and seal the packaging film between the food storage container 5 and the heat-sealing module 4, thus completing the automatic sealing process for a single food storage container 5. The entire process, triggered by a series of automated actions after the food storage container 5 reaches the preset position, achieves fully automated production from position detection and centering to heat sealing, significantly improving the equipment's production efficiency and sealing accuracy.

[0031] It should be noted that a passageway for the packaging film must be reserved between the bottom of the heat-sealing module 4 and the top of the food storage container 5 to ensure that the film can smoothly cover the opening of the food storage container 5. Simultaneously, the equipment must be equipped with an automatic film changing mechanism. This mechanism will automatically replace the used film and transport a new film to the designated position after each sealing process with the food storage container 5, ensuring a continuous supply of film and enabling the equipment to achieve efficient and uninterrupted continuous sealing operations, avoiding production interruptions caused by manual film replacement.

[0032] It should be noted that the trigger push block 16 and the detection module 17 should be similar to an NFC module, which has the function of touch completion information detection. Through near-field wireless communication technology, when two NFC-enabled devices touch each other, the built-in sensor will automatically detect and establish a connection, complete the information matching and authorization between the devices in a very short time, realize the rapid transmission and interaction of information, and transmit detection signals to external devices.

[0033] In one optional embodiment, two sets of side plates 7 are fixedly connected to the top of the base plate 1. Multiple sets of material transfer rollers 8 are movably sleeved on the opposite sides of the two sets of side plates 7, and a food storage container 5 is provided at the top of the material transfer rollers 8. During the loading and unloading process of the equipment, the multiple sets of material transfer rollers 8 are driven by an external power source to maintain the same speed and direction of rotation, so that the food storage container 5 placed on the top of the roller can move stably towards the heat sealing station or the unloading station as the roller rolls, thereby achieving the automatic loading and unloading effect of the food storage container 5.

[0034] It should be noted that independent conveying devices need to be configured on both sides of the conveying roller 8. The conveying device on the material side is responsible for conveying the food storage boxes 5 to be packaged to the conveying roller 8 in an orderly manner at fixed intervals to ensure the continuity and stability of the feeding. The conveying device on the discharge side will promptly transfer the food storage boxes 5 that have been packaged from the conveying roller 8 to avoid the finished products from accumulating at the work station. Through the coordinated cooperation of the conveying devices on both sides and the conveying roller 8, the equipment forms a complete assembly line, which greatly shortens the processing cycle of a single food storage box 5.

[0035] In one optional embodiment, the detection block 10 is triangular, with its top end fitting against the bottom end of the food storage container 5. To optimize the detection effect of the detection block 10 and its adaptability to the movement of the food storage container 5, the overall structure of the detection block 10 is designed as a triangle. When the food storage container 5 moves to a preset position under the drive of the transfer roller 8, its bottom end will first contact the inclined surface of the detection block 10. Due to the guiding effect of the inclined surface, the bottom end of the food storage container 5 will slide smoothly along the inclined surface, naturally generating downward pressure during this process, pushing the detection block 10 to gradually descend until the top surface of the detection block 10 is flush with the top surface of the transfer roller 8. This design not only accurately detects whether the food storage container 5 has moved to the predetermined position, but also ensures that the detection block 10 will not obstruct the subsequent parallel movement of the food storage container 5 after detection, effectively avoiding the problem of the food storage container 5 getting stuck or shifting due to the protrusion of the detection component.

[0036] In one optional embodiment, one end of a spring 9 is fixedly connected to the bottom end of the detection block 10, and the other end of the spring 9 is fixedly connected to the base plate 1. To realize the automatic reset and continuous detection functions of the detection block 10, two sets of springs 9 are symmetrically arranged at the bottom end of the detection block 10. The top end of the spring 9 is fixed to the bottom end of the detection block 10 by welding, and the bottom end abuts against the top surface of the base plate 1. When the device is not in use, the elastic potential energy of spring 9 will push the detection block 10 upward, raising its top surface to a position higher than the top surface of the transfer roller 8, ensuring precise contact with the bottom of the moving food container 5. When the food container 5 moves to the top of the detection block 10, the weight of the food container 5 and the pushing force of the transfer roller 8 will cause spring 9 to compress elastically, causing the detection block 10 to descend. When the food container 5 completes the detection and continues to move forward away from the detection block 10, spring 9 will release its elastic potential energy, pushing the detection block 10 again to a position higher than the transfer roller 8, waiting for the arrival of the next food container 5, thus achieving continuous detection of the food container 5 without manual intervention to reset it.

[0037] In an optional embodiment, limiting blocks 14 are fixedly connected to the outer sides of the side plates 7, and the inner walls of the limiting blocks 14 are movably sleeved with the two sets of transmission rods 13. In the installation structure of the transmission rods 13, the limiting blocks 14 are fixed to the top of the base plate 1 by bolts, and the shaft holes opened inside them are clearance-fitted with the outer walls of the transmission rods 13 to form a limiting support for the transmission rods 13. This design can effectively limit the radial displacement of the transmission rods 13 during rotation, avoid the decrease in meshing accuracy of the gears 15 and racks 18 due to the shaking of the transmission rods 13, and ensure that the transmission rods 13 always maintain a stable rotation state, providing reliable structural support for the synchronous rotation of the four sets of transmission rods 6, and ensuring the accurate realization of the centering limiting function.

[0038] In one optional embodiment, four sets of fitting support blocks 12 are movably fitted onto the outer wall of the food storage container 5, and the outer walls of the four sets of fitting support blocks 12 are fixedly connected to the transmission rod 6. To improve the support effect and heat sealing quality of the food storage container 5, a fitting support block 12 is provided at the extension end of each set of transmission rods 6. The fitting support block 12 is made of flexible and wear-resistant material, and its shape matches the side contour of the food storage container 5, which can significantly increase the contact area between the transmission rod 6 and the food storage container 5, ensuring a more stable fixation of the food storage container 5 when it is centered and limited. More importantly, when the heat sealing module 4 heat seals the food storage container 5, the fitting support block 12 will fit tightly against the outer side of the heat sealing edge of the food storage container 5, forming a stable support force in this area, effectively preventing the food storage container 5 from deforming due to the heat sealing pressure, thereby preventing problems such as poor sealing of the packaging film and wrinkles caused by the deformation of the container body, and ensuring that the sealing effect of each heat sealing operation can meet the preset standard.

[0039] In one optional embodiment, the base plate 1 has two sets of sliding grooves inside, and each set of sliding grooves has a limiting slider 21 slidably fitted inside. The limiting slider 21 is elliptical in shape, and its top end is fixedly connected to the rack 18. In the moving mechanism of the rack 18, the limiting slider 21 is fixed to the top end of the base plate 1 by bolts and is symmetrically distributed on both sides of the rack 18. The sliding groove inside the limiting slider 21 slides and engages with the side of the rack 18. When the rack 18 moves horizontally on both sides of the gear 15, the limiting slider 21 can limit the vertical displacement and left and right deflection of the rack 18, so that the rack 18 always remains parallel to the tooth surface of the gear 15. This design not only ensures the accuracy of the meshing between the rack 18 and the gear 15 and avoids malfunctions such as tooth jamming and tooth disengagement caused by the tilting of the rack 18, but also makes the movement of the rack 18 smoother, providing stable power transmission for the synchronous action of the subsequent transmission rod 2 19 and transmission rod 1 6, and ensuring the operational reliability of the entire centering limiting system.

[0040] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection. They can refer to a mechanical connection or an electrical connection. They can refer to a direct connection or an indirect connection through an intermediate medium, and they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0041] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0042] The foregoing disclosure provides many different embodiments or examples for implementing different structures of this application. To simplify the disclosure, specific examples of components and arrangements are described above. Of course, these are merely examples and are not intended to limit the scope of this application. Furthermore, reference numerals and / or letters may be repeated in different examples; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed. In addition, examples of various specific processes and materials are provided in this application, but those skilled in the art will recognize the application of other processes and / or the use of other materials.

[0043] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with an embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0044] Although embodiments of this application have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the claims and their equivalents.

Claims

1. A sealing device for pre-prepared vegetables, comprising a base plate (1), an outer frame (2) fixedly connected to the top of the base plate (1), a cylinder (3) fixedly sleeved on the inner wall of the outer frame (2), a heat sealing module (4) fixedly connected to the output end of the cylinder (3), and a preservation box (5) provided at the bottom of the heat sealing module (4), characterized in that: The fixing mechanism includes a drive shaft (11), a drive rod three (20) fixedly sleeved on the outer wall of the drive shaft (11), a drive rod two (19) hinged at both ends of the drive rod three (20), a rack (18) hinged at the outer edge of the drive rod two (19), two sets of gears (15) meshing on the outer wall of the rack (18), a drive rotating rod (13) fixedly sleeved on the inner wall of the gear (15), and a drive rod one (6) fixedly sleeved at the top end of the drive rotating rod (13), which is used to limit and fix the food storage box (5) when sealing the film; The detection device, located inside the fixing mechanism, includes a detection module (17) fixedly connected to the top of the base plate (1), a trigger push block (16) attached to the top of the detection module (17), and a detection pressure block (10) fixedly connected to the top of the trigger push block (16), which is used to detect when the food storage box (5) reaches the predetermined position.

2. The sealing device for pre-prepared vegetables according to claim 1, characterized in that, The bottom plate (1) is fixedly connected to two sets of side plates (7), and multiple sets of material conveying rollers (8) are movably sleeved on the opposite sides of the two sets of side plates (7). A food preservation box (5) is provided at the top of the material conveying rollers (8).

3. The sealing device for pre-prepared vegetables according to claim 1, characterized in that, The detection block (10) is triangular, and the top of the detection block (10) is attached to the bottom of the food storage box (5).

4. A sealing device for pre-prepared vegetables according to claim 1, characterized in that, The bottom end of the detection block (10) is fixedly connected to one end of a spring (9), and the other end of the spring (9) is fixedly connected to the base plate (1).

5. A sealing device for pre-prepared vegetables according to claim 2, characterized in that, The outer side of each side plate (7) is fixedly connected to a limiting block (14), and the inner wall of the limiting block (14) is movably sleeved with two sets of transmission rods (13).

6. A sealing device for pre-prepared vegetables according to claim 1, characterized in that, The outer wall of the food storage box (5) is movably fitted with four sets of fitting support blocks (12), and the outer walls of the four sets of fitting support blocks (12) are fixedly connected to the transmission rod (6).

7. A sealing device for pre-prepared vegetables according to claim 1, characterized in that, The base plate (1) has two sets of sliding grooves inside, and a limiting slider (21) is slidably sleeved inside each of the two sets of sliding grooves. The limiting slider (21) is elliptical, and the top of the limiting slider (21) is fixedly connected to the rack (18).

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