A continuous packaging device for preventing deformation of New Year's steamed buns

Abstract

The present invention discloses a continuous packaging device for preventing the deformation of New Year's steamed buns, which relates to the technical field of New Year's steamed bun packaging. The device comprises a packaging machine, a detachable double-layer bag, and an inflation component. The packaging machine is provided with a feeding port, a top heat-sealing mechanism, a port heat-sealing cut-off mechanism, and a feeding port. A first detector and a second detector are installed on both sides of the port heat-sealing cut-off mechanism for detecting New Year's steamed buns. The detachable double-layer bag is composed of independently formed inner and outer films, and the inner and outer films are only formed into a continuous linear joint at the bottom by hot-melt bonding. The inflation component comprises a guide, a film layer separator, an air delivery pipe, an inflation nozzle, and an adaptive airbag. The detachable double-layer bag and the inflation component of the present invention cooperate with the first detector, the second detector, the top heat-sealing mechanism, and the port heat-sealing cut-off mechanism to jointly construct a continuous inflation packaging system, which can limit the packaging of New Year's steamed buns and effectively prevent the problem of deformation of the New Year's steamed buns due to collision and vibration.

Description

Technical Field

[0001] The present invention relates to the technical field of New Year's steamed bun packaging, and in particular to a deformation-proof continuous packaging device for New Year's steamed bun. Background Art

[0002] Huozhou New Year's steamed buns, a distinctive traditional folk craft from Shanxi Province and also a delicacy, hold a significant place in local folk culture. Their diverse shapes encompass a variety of symbolic forms, from auspicious animals to flowers embodying good wishes. Each shape incorporates numerous intricate details and accents, fully showcasing the unique charm of traditional craftsmanship.

[0003] Due to the unique shape of New Year's steamed buns, traditional inflatable packaging cannot effectively restrain the steamed buns inside. During transportation, the steamed buns are easily deformed by shaking and collisions. For example, the ears and tails of animal-shaped steamed buns are extremely fragile and easily break or bend during transportation vibrations. Decorative items such as red dates and walnuts are also often dropped due to vibrations.

[0004] New Year's steamed buns not only have edible value but also carry profound cultural value. Their appearance and integrity are crucial to consumers' cultural experience and aesthetic expectations. Deformation and damage not only diminish the product's aesthetic appeal, failing to meet consumers' aesthetic needs for traditional culinary culture, but also negatively impact the product's market sales and brand image.

[0005] Furthermore, during the Huozhou New Year's steamed bun production process, even identical buns can have slight variations in size due to variations in the handcrafting and steaming process. Furthermore, some buns are tall, bulky, and relatively inexpensive, making them unsuitable for packaging like mooncakes, which require plastic molds for protection before packaging.

[0006] To summarize, we wanted to design a device specifically for packaging New Year's steamed buns. This device needed to fully consider the shape of the steamed buns and effectively protect their unique shape. It also needed to provide the continuous packaging capabilities of traditional packaging machines, ensuring uncompromised packaging efficiency and meeting the market demand for Huozhou New Year's steamed buns. Summary of the Invention

[0007] The purpose of the present invention is to solve the problems raised in the background technology and to propose a continuous packaging device for preventing deformation of New Year's steamed buns.

[0008] In order to achieve the above object, the present invention adopts the following technical solutions:

[0009] A deformation-proof continuous packaging device for New Year's steamed buns comprises: a packaging machine, a detachable double-layer bag, and an inflation assembly. The packaging machine is provided with a feeding port, a top heat-sealing mechanism, a port heat-sealing and cutting-off mechanism, and a feeding port in sequence along a material conveying direction. A first detector and a second detector are respectively installed on both sides of the port heat-sealing and cutting-off mechanism to detect the position and status of the New Year's steamed buns.

[0010] The inflation assembly includes a guide, a membrane separator, an air delivery pipe, an inflation nozzle, and an adaptive airbag, wherein the guide is used to guide the separable double-layer bag toward the top heat sealing mechanism;

[0011] The membrane layer separator is used to separate the separable double-layer bags, and the membrane layer separator is connected to the gas pipe. An inflation nozzle and an adaptive airbag are provided at the end of the gas pipe to inflate and shape the separable double-layer bags. The inflation nozzle and the adaptive airbag dynamically adjust the air flow according to the feedback signals of the first detector and the second detector, thereby changing their own state to prevent gas leakage when the separable double-layer bags are sealed, and at the same time pre-shape them for the next round of packaging.

[0012] As a further solution of the present invention: a conveying roller group is arranged at the front end of the feeding port, and the separable double-layer bag is wound on the conveying roller group;

[0013] The split double-layer bag is composed of an independently formed inner film and an outer film, wherein the inner film and the outer film are only hot-melt-bonded at the bottom to form a continuous linear joint;

[0014] The inner layer membrane is provided with an inwardly protruding bulge.

[0015] As a further solution of the present invention: the membrane layer separation member includes a separation rod and a separation paddle fixedly mounted on the separation rod, wherein the separation rod is located between the inner membrane and the outer membrane;

[0016] The end of the separation rod is connected to the air supply pipe. The separation rod is hollow inside and an air inlet is installed on the separation rod. The air inlet, the separation rod and the air supply pipe are interconnected. The air inlet is used to supply air to the inflation nozzle and the adaptive airbag.

[0017] The separation rod and the separation paddle are made of flexible deformable material.

[0018] As a further solution of the present invention: the inflation nozzle and the adaptive airbag are located between the top heat sealing mechanism and the first detector, and the inflation nozzle is close to the first detector, and the adaptive airbag is close to the top heat sealing mechanism;

[0019] The inflation nozzle is located on a side close to the outer membrane, and the adaptive airbag is located on a side close to the inner membrane;

[0020] Flow control valves are installed between the air supply pipe and the inflation nozzle, and between the air supply pipe and the adaptive airbag;

[0021] The adaptive airbag is equipped with an air release valve, and the inflation nozzle is equipped with an air pressure sensor, and the air pressure sensor cooperates with the air release valve and the flow control valve.

[0022] As a further solution of the present invention: an electromagnet is provided on the inflation nozzle, and an electromagnet is correspondingly provided below the inflation nozzle on the packaging machine, and the two electromagnets maintain magnetic repulsion.

[0023] As a further solution of the present invention: the material conveying direction of the packaging machine is arranged to be inclined, with the loading port at the top and the unloading port at the bottom;

[0024] The guide is fixedly mounted on the feeding port, a threaded rod is fixedly mounted on the guide, an adjusting ring is sleeved on the threaded rod, the adjusting ring is locked and fixed on the threaded rod by a nut, and the adjusting ring is fixedly connected to the separation rod.

[0025] As a further solution of the present invention: the top heat sealing mechanism includes a fixing frame, a hot pressing execution module and a guide positioning module, the fixing frame is fixedly installed on the packaging machine, and the hot pressing execution module and the guide positioning module are both arranged on the fixing frame;

[0026] The hot pressing execution module comprises two symmetrically arranged heat sealing blocks, which are driven by a pneumatic clamping unit to perform clamping motion;

[0027] The guide positioning modules are provided in two groups, and the two groups of guide positioning modules are respectively located at the front and rear ends of the hot pressing execution module. Each group of guide positioning modules is composed of a driving wheel and a driven wheel. The driving wheel and the driven wheel are driven to rotate by a motor, and the driving wheel and the driven wheel rotate in opposite directions.

[0028] A protective cover is installed on the top of the top heat sealing mechanism.

[0029] As a further solution of the present invention: the pneumatic clamping unit consists of a cylinder, two driving rods and two clamping rods. The cylinder is fixedly installed on a fixed frame. The telescopic end of the cylinder is connected to one end of the two driving rods through a rotational connection. The other ends of the two driving rods are respectively rotationally connected to the middle of the two clamping rods. One end of the two clamping rods is rotationally connected to the fixed frame, and the other end is fixedly installed with a heat sealing block.

[0030] As a further solution of the present invention: the port heat sealing and cutting mechanism includes an upper heat sealing plate and a lower heat sealing plate, the upper heat sealing plate is fixedly mounted on a movable bracket, the lower heat sealing plate is fixedly mounted on a fixed bracket, the fixed bracket is fixedly connected to the packaging machine, and the movable bracket is slidably connected to the fixed bracket;

[0031] The upper heat sealing plate is located directly above the lower heat sealing plate. The upper heat sealing plate and the lower heat sealing plate cooperate with each other to heat seal the ports of the separable double-layer bag. At the same time, a heat sealing knife is fixedly installed on the upper heat sealing plate.

[0032] Compared with the existing technology, the advantages of the present invention are:

[0033] 1: By setting an inflation nozzle and an adaptive airbag, air is inflated between the inner and outer films of the separate double-layer bag. After the New Year's steamed bun is placed in the separate double-layer bag, as the inflation process proceeds, the inner film can fit tightly to the unique shape of the New Year's steamed bun, becoming a protective shell for the New Year's steamed bun, limiting the position of the New Year's steamed bun, and effectively preventing the New Year's steamed bun from shifting and shaking inside the package. At the same time, the gas filled between the inner and outer films forms a buffer layer, which can absorb the impact force that may be exerted during transportation and handling, provide buffering protection for the New Year's steamed bun, solve the problem of deformation of the New Year's steamed bun due to collision and vibration, and effectively ensure the integrity and aesthetics of the New Year's steamed bun.

[0034] 2. The detachable double-layer bag and inflation assembly, working in conjunction with the first and second detectors, the top heat-sealing mechanism, and the end heat-seal shutoff mechanism, form a highly efficient, continuous inflation packaging system. When the first detector senses the passage of a steamed bun inside the detachable double-layer bag, the inflation nozzle responds quickly, automatically reducing the airflow to prevent overinflation and the impact of subsequent operations. Simultaneously, the adaptive airbag rapidly inflates, effectively preventing gas leakage during the heat-seal shutoff and ensuring stable air pressure within the package. It also pre-shapes the front end of the next detachable double-layer bag entering the packaging process, preparing it for the next round of packaging. When the second detector detects the passage of a steamed bun, the end heat-seal shutoff mechanism immediately activates, heat-sealing and shutting off the detachable double-layer bag, transforming it into an independent packaging unit. Simultaneously, the adaptive airbag rapidly deflates to make room for the next inflation cycle, while the inflation nozzle immediately increases the airflow to begin inflating and shaping the next detachable double-layer bag containing steamed buns, achieving efficient and continuous packaging of steamed buns. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0036] Figure 2 for Figure 1 A partial enlarged schematic diagram of point A in the middle;

[0037] Figure 3 This is a schematic diagram of the overall structure of the present invention from another angle;

[0038] Figure 4 for Figure 3 Schematic diagram of the structure after removing the protective cover;

[0039] Figure 5 It is a front view structural schematic diagram of the present invention;

[0040] Figure 6 This is a schematic diagram of the installation structure of the top heat sealing mechanism and the port heat sealing and cutting mechanism on the packaging machine of the present invention;

[0041] Figure 7 It is a structural schematic diagram of the port heat sealing and cutting mechanism of the present invention;

[0042] Figure 8 Schematic diagram of the structure of the top heat sealing mechanism of the present invention;

[0043] Figure 9 Schematic diagram of the front structure of the top heat sealing mechanism of the present invention;

[0044] Figure 10 It is a structural schematic diagram of the pneumatic clamping unit of the present invention;

[0045] Figure 11 It is a structural schematic diagram of the inflatable component of the present invention;

[0046] Figure 12 for Figure 11 A partial enlarged schematic diagram of point B in the middle;

[0047] Figure 13 for Figure 11 A partial enlarged schematic diagram of point C in the middle;

[0048] Figure 14 Schematic diagram of the process of packaging New Year's steamed buns using the separable double-layer bag and the inflatable component of the present invention;

[0049] Figure 15 This is a schematic diagram of the structure of the inner and outer membranes of the present invention when they are not inflated;

[0050] Figure 16 This is a schematic diagram of the structure of the inner and outer membranes after inflation.

[0051] Figure: 1, packaging machine; 11, feeding port; 111, conveyor roller assembly; 12, top heat sealing mechanism; 121, fixing frame; 122, hot pressing execution module; 1221, heat sealing block; 123, guide positioning module; 1231, driving wheel; 1232, driven wheel; 124, pneumatic clamping unit; 1241, cylinder; 1242, driving rod; 1243, clamping rod; 125, protective cover; 13, port heat sealing cut-off mechanism; 131, upper heat sealing plate; 132, lower heat sealing plate Sealing plate; 133. Movable bracket; 134. Fixed bracket; 14. Feeding port; 2. Separable double-layer bag; 21. Inner membrane; 22. Outer membrane; 3. Inflation assembly; 31. Guide; 311. Threaded rod; 312. Adjustment ring; 32. Membrane separator; 321. Separation rod; 3211. Air inlet; 322. Separation paddle; 33. Air pipe; 34. Inflation nozzle; 341. Electromagnet; 35. Adaptive airbag; 4. First detector; 41. Second detector. DETAILED DESCRIPTION

[0052] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0053] Reference Figure 1-16 A continuous packaging device for preventing deformation of New Year's steamed buns includes a packaging machine 1, a separable double-layer bag 2 and an inflation component 3. The packaging machine 1 is provided with a feeding port 11, a top heat sealing mechanism 12, a port heat sealing cut-off mechanism 13 and a feeding port 14 in sequence along the material conveying direction. A first detector 4 and a second detector 41 are respectively installed on both sides of the port heat sealing cut-off mechanism 13. They are used to detect the position and status of the New Year's steamed buns and provide key signals for subsequent packaging actions.

[0054] The material conveying direction of the packaging machine 1 is set at an angle, with the loading port 11 at the top and the loading port 14 at the bottom, and the surface of the packaging machine 1 used to convey materials needs to be smooth and smooth. During the packaging process, people stand at the loading port 11 and put the New Year's steamed buns into the separable double-layer bag 2. Under the influence of the New Year's steamed buns' own gravity, the New Year's steamed buns and the separable double-layer bag 2 will automatically slide to the lower feeding port 14. This design relies on gravity and does not require the use of an additional conveyor belt.

[0055] The separable double-layer bag 2 is wound on the conveying roller group 111, which is arranged at the front end of the feeding port 11. The conveying roller group 111 consists of two conveying rollers of different sizes. The two conveying rollers can be rotatably installed at the front end of the packaging machine 1 for winding and conveying the separable double-layer bag 2.

[0056] The split double-layer bag 2 is composed of an independently formed inner film 21 and an outer film 22, and the inner film 21 and the outer film 22 are only formed into a continuous linear joint portion at the bottom by hot-melt bonding (such as Figure 15 As shown in the figure, air is inflated between the inner film 21 and the outer film 22, and the inner film 21 will fit tightly on the surface of the steamed bun, becoming a protective shell for the steamed bun. Since the bottom of the inner film 21 is bonded and fixed to the outer film 22, the steamed bun can be limited in position, effectively preventing the steamed bun from displacement and shaking inside the package. In addition, the inner film 21 is provided with an inwardly protruding bulge. Due to the special shape of some steamed buns, it is difficult for the conventional inner film 21 to fully fit. The bulge on the inner film 21 can be in close contact with the irregular parts of the steamed bun, thereby limiting the position of the steamed bun (as shown in the figure). Figure 16 shown).

[0057] Using a detachable double-layer bag 2 for inflatable packaging of New Year's steamed buns requires resolving three technical difficulties: first, the inner film 21 and outer film 22 must be separated during the packaging process; second, precise inflating between the inner and outer films 21, 22 must be achieved during the continuous packaging process; and third, after inflation, air must be prevented from entering the inner film 21 during sealing, as well as from leaking between the inner and outer films 21, 22. To address these issues, the present application's detachable double-layer bag 2, inflation assembly 3, first detector 4, second detector 41, top heat-sealing mechanism 12, and port heat-sealing cutoff mechanism 13 jointly form a collaborative and efficient continuous inflatable packaging system.

[0058] Reference Figure 11-16 The inflation assembly 3 includes a guide 31, a membrane separator 32, an air delivery pipe 33, an inflation nozzle 34 and an adaptive airbag 35. The guide 31 is fixedly mounted on the feeding port 11 and is used to guide the separable double-layer bag 2 to the top heat sealing mechanism 12.

[0059] The membrane layer separator 32 includes a separation rod 321 and a separation paddle 322 fixedly mounted on the separation rod 321. The membrane layer separator 32 is mounted on the guide member 31. The separation paddle 322 is located at the edge of the separable double-layer bag 2 and is used to separate the inner membrane 21 and the outer membrane 22. The separation rod 321 is inserted between the inner membrane 21 and the outer membrane 22. The separation rod 321 and the separation paddle 322 are made of flexible deformable materials (such as silicone, TPU, aluminum alloy, carbon fiber composite materials), which can be bent and shaped at will. Therefore, they can adjust their own direction along the direction of the inner membrane 21 and the outer membrane 22. When separating the inner membrane 21 and the outer membrane 22, they can better adapt to the shape changes of the separable double-layer bag 2 and are not easy to cause damage to the separable double-layer bag 2.

[0060] The end of the separation rod 321 is connected to the air supply pipe 33. The separation rod 321 is hollow inside and is equipped with an air inlet 3211. The air inlet 3211, the separation rod 321 and the air supply pipe 33 are interconnected and are used to supply air to the inflation nozzle 34 and the adaptive airbag 35.

[0061] In addition, flow control valves are installed between the air supply pipe 33 and the inflation nozzle 34 and between the air supply pipe 33 and the adaptive airbag 35 for accurately adjusting the air flow rate. At the same time, the adaptive airbag 35 is also equipped with a deflation valve to quickly deflate when needed. In addition, an air pressure sensor is installed on the inflation nozzle 34 for detecting the air pressure between the inner membrane 21 and the outer membrane 22. The flow control valve and the deflation valve can adjust the airflow size and deflation according to the feedback signal of the air pressure sensor.

[0062] Reference Figure 11-13 An electromagnet 341 is provided on the inflation nozzle 34, and the packaging machine 1 is provided with an electromagnet 341 corresponding to the bottom of the inflation nozzle 34, and the two electromagnets 341 maintain magnetic repulsion. This design is to control the inflation nozzle 34 in a suspended state, to avoid the inflation nozzle 34 leaving scratches on the separable double-layer bag 2 and affecting the smoothness of the transmission of the separable double-layer bag 2.

[0063] Reference Figure 1 and Figure 13 The inflation nozzle 34 and the adaptive airbag 35 are located between the top heat sealing mechanism 12 and the first detector 4, the inflation nozzle 34 is close to the first detector 4, the adaptive airbag 35 is close to the top heat sealing mechanism 12, and the adaptive airbag 35 is close to the inner film 21, and the inflation nozzle 34 is close to the outer film 22;

[0064] When the steamed bun is conveyed through the inflation nozzle 34 and the adaptive airbag 35, the adaptive airbag 35 is in a deflated state. When the first detector 4 senses that the steamed bun in the separate double-layer bag has passed, it means that the inflation packaging of the steamed bun is completed and it needs to be cut off and sealed (such as Figure 13 As shown), at this time, the inflation nozzle 34 starts to automatically reduce the air flow (to avoid over-inflation causing the separable double-layer bag 2 to burst during sealing);

[0065] At the same time, the adaptive airbag 35 rapidly inflates, performing three functions: First, it squeezes and pre-seals the inner film 21, preventing airflow from entering the inner film 21 during the sealing process, which could cause the inner film 21 to lose contact with the steamed bun and weaken its position-limiting effect; second, it blocks the gap between the inner and outer films 21, 22, preventing gas leakage between them during the heat seal. It's important to note that the adaptive airbag 35 doesn't completely align with the outer film 22 after inflating; a gap is required to allow gas squeezed out of the end during heat sealing. (Because the adaptive airbag 35 is close to the inner film 21 and has an inflation nozzle 34 and air supply tube 33 on the side facing the outer film 22, the inflated adaptive airbag 35 only contacts the inner film 21, leaving a gap between it and the outer film 22.) Third, it pre-shapes the front end of the next separable double-layer bag 2 entering the packaging process, fully preparing for the next round of packaging.

[0066] When the second detector 41 detects that the New Year's steamed bun has passed through, the port heat-sealing and cutting-off mechanism 13 is immediately started to perform a heat-sealing and cutting operation on the separable double-layer bag 2, making it an independent packaging unit. At the same time, the adaptive airbag 35 quickly deflates and shrinks to make room for the next inflation packaging, and the inflation nozzle 34 immediately increases the flow rate and begins to inflate and shape the next separable double-layer bag 2 containing the New Year's steamed bun.

[0067] Reference Figure 11 A threaded rod 311 is fixedly installed on the guide member 31, and an adjusting ring 312 is mounted on the threaded rod 311. The adjusting ring 312 is fastened and fixed to the threaded rod 311 by a nut. At the same time, the adjusting ring 312 is fixedly connected to the separation rod 321. By adjusting the adjusting ring 312, the height and direction of the separation rod 321 can be adjusted.

[0068] Reference Figure 8-10 The top heat sealing mechanism 12 includes a fixed frame 121, a hot pressing execution module 122 and a guide positioning module 123. The fixed frame 121 is fixedly installed on the packaging machine 1, and the hot pressing execution module 122 and the guide positioning module 123 are both arranged on the fixed frame 121. The hot pressing execution module 122 includes two symmetrically arranged heat sealing blocks 1221, which are driven by a pneumatic clamping unit 124 to perform clamping movement. The pneumatic clamping unit 124 consists of a cylinder 1241, two driving rods 1242 and two clamping rods 1243. The cylinder 1241 is fixedly installed on the fixed frame 121, and the telescopic end of the cylinder 1241 is connected to one end of the two driving rods 1242 by a rotational connection. The other ends of the two driving rods 1242 are respectively rotationally connected to the two clamping rods 1243. One end of the two clamping rods 1243 is rotationally connected to the fixed frame 121, and the other end is fixedly mounted with the heat sealing block 1221. The telescopic movement of the cylinder 1241 drives the driving rod 1242 and the clamping rod 1243 to move, thereby clamping and loosening the heat sealing block 1221, thereby heat-sealing the top of the separable double-layer bag 2.

[0069] Two guide and positioning modules 123 are provided, located at the front and rear ends of the heat-pressing execution module 122. Each guide and positioning module 123 consists of a driving pulley 1231 and a driven pulley 1232, each driven by a motor and rotating in opposite directions (the motor drives the pulley and gear set to drive the driving and driven pulleys 1231 and 1232). Their function is to guide and seal the separable double-layer bag 2 during the heat-sealing process (heat-sealing the inner and outer films 21, 22 together at the top). A protective cover 125 is also installed on the top of the top heat-sealing mechanism 12 to protect the operator and prevent foreign matter from entering the heat-sealing mechanism and affecting the heat-sealing effect.

[0070] The end heat-sealing and cutting mechanism 13 comprises an upper heat-sealing plate 131 and a lower heat-sealing plate 132. The upper heat-sealing plate 131 is fixedly mounted on a movable bracket 133, while the lower heat-sealing plate 132 is fixedly mounted on a fixed bracket 134. The fixed bracket 134 is fixedly connected to the packaging machine 1, and the movable bracket 133 is slidably connected to the fixed bracket 134 (driven by a telescopic rod to slide up and down). The upper heat-sealing plate 131 is located directly above the lower heat-sealing plate 132, and the two plates cooperate to heat-seal the end of the separable double-layer bag 2. Simultaneously, a heat-sealing knife (this is conventional technology) is fixedly mounted on the upper heat-sealing plate 131. During heat sealing, the knife can cut the bag into individual packaging units.

[0071] It is further explained that the above-mentioned fixed connection should be understood in a broad sense unless otherwise clearly specified and limited. For example, it can be welding, gluing, or one-piece molding, etc., which are common means well known to those skilled in the art.

[0072] The working steps of this application are as follows:

[0073] S1: Loading: The conveyor roller assembly 111 rotates, conveying the separable double-layer bag 2 to the loading port 11. The guide member 31 accurately guides the separable double-layer bag 2 toward the top heat-sealing mechanism 12. During this process, the operator places the New Year steamed bun onto the separable double-layer bag 2 at the loading port 11. Due to the inclined material conveying direction of the packaging machine 1, the New Year steamed bun and the separable double-layer bag 2 slide toward the top heat-sealing mechanism 12 under the action of gravity.

[0074] S2: film separation, the separation rod 321 and the separation paddle 322 separate the inner film 21 and the outer film 22;

[0075] S3: Top heat sealing: the top heat sealing mechanism 12 heat seals the top of the separable double-layer bag 2 to form it into a bag shape;

[0076] S4: Inflation and shaping: the inflation nozzle 34 is inflated to make the inner layer film 21 fit the shape of the steamed bun and limit the position of the steamed bun. When the first detector 4 senses that the steamed bun in the separable double-layer bag 2 has passed, the inflation nozzle 34 begins to reduce the flow rate. At the same time, the adaptive airbag 35 will swell to prevent air leakage during cutting and shape the front end of the next separable double-layer bag 2.

[0077] S5: Port heat sealing and cutting. When the second detector 41 senses the passage of the steamed bun, the port heat sealing and cutting mechanism 13 is activated. The movable bracket 133 drives the upper heat sealing plate 131 to move downward, cooperating with the lower heat sealing plate 132 to heat seal the port of the separable double-layer bag 2. At the same time, the heat sealing knife on the upper heat sealing plate 131 cuts the packaging bag into individual packages.

[0078] S6: The adaptive airbag 35 is deflated and the inflation nozzle 34 is adjusted. When the heat seal of the port is cut off, the deflation valve of the adaptive airbag 35 is opened, and the adaptive airbag 35 is deflated and reduced to make room for the next inflation and packaging. The inflation nozzle 34 begins to increase the flow rate and prepares to inflate and shape the next detachable double-layer bag 2 containing the New Year's steamed bun;

[0079] S7: unloading, the packaged New Year's steamed buns are discharged through the unloading port 14.

[0080] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A continuous packaging device for preventing deformation of New Year's steamed buns, comprising a packaging machine (1), characterized in that: It also includes a separable double-layer bag (2) and an inflation component (3). The packaging machine (1) is provided with a feeding port (11), a top heat-sealing mechanism (12), a port heat-sealing and cutting mechanism (13), and a feeding port (14) in sequence along the material conveying direction. A first detector (4) and a second detector (41) are respectively installed on both sides of the port heat-sealing and cutting mechanism (13) for detecting the position and state of the New Year steamed bun. The inflation assembly (3) comprises a guide member (31), a membrane layer separator (32), an air delivery pipe (33), an inflation nozzle (34), and an adaptive airbag (35); the guide member (31) is used to guide the separable double-layer bag (2) toward the top heat-sealing mechanism (12); The membrane separator (32) is used to separate the separable double-layer bag (2). The membrane separator (32) is connected to the air supply pipe (33). An inflation nozzle (34) and an adaptive air bag (35) are provided at the end of the air supply pipe (33) for inflating and shaping the separable double-layer bag (2). The inflation nozzle (34) dynamically adjusts the air flow rate according to the feedback signals of the first detector (4) and the second detector (41). The adaptive air bag (35) dynamically adjusts the air flow rate according to the feedback signals of the first detector (4) and the second detector (41), thereby changing its own state to a shrunken or inflated state, thereby preventing gas leakage when the separable double-layer bag (2) is sealed and pre-shaping for the next round of packaging.

2. The device for continuously packaging steamed buns to prevent deformation according to claim 1, characterized in that: A conveying roller group (111) is arranged at the front end of the feeding port (11), and the separable double-layer bag (2) is wound on the conveying roller group (111); The separable double-layer bag (2) is composed of an independently formed inner film (21) and an outer film (22), wherein the inner film (21) and the outer film (22) are only connected at the bottom by hot-melt bonding to form a continuous linear joint; The inner layer membrane (21) is provided with an inwardly protruding bulge.

3. The device for continuously packaging steamed buns to prevent deformation according to claim 2, characterized in that: The membrane layer separation member (32) comprises a separation rod (321) and a separation paddle (322) fixedly mounted on the separation rod (321), wherein the separation rod (321) is located between the inner membrane (21) and the outer membrane (22); The end of the separation rod (321) is connected to the air supply pipe (33). The separation rod (321) is hollow inside. An air inlet (3211) is installed on the separation rod (321). The air inlet (3211), the separation rod (321) and the air supply pipe (33) are interconnected. The air inlet (3211) is used to supply air to the inflation nozzle (34) and the adaptive airbag (35). The separation rod (321) and the separation paddle (322) are made of a flexible deformable material.

4. The device for continuously packaging steamed buns to prevent deformation according to claim 3, characterized in that: The inflation nozzle (34) and the adaptive airbag (35) are located between the top heat-sealing mechanism (12) and the first detector (4), with the inflation nozzle (34) close to the first detector (4) and the adaptive airbag (35) close to the top heat-sealing mechanism (12); The inflation nozzle (34) is located on a side close to the outer membrane (22), and the adaptive airbag (35) is located on a side close to the inner membrane (21); Flow control valves are installed between the air delivery pipe (33) and the inflation nozzle (34) and between the air delivery pipe (33) and the adaptive airbag (35); The adaptive airbag (35) is equipped with a deflation valve, and the inflation nozzle (34) is equipped with an air pressure sensor, and the air pressure sensor cooperates with the deflation valve and the flow control valve.

5. The device for continuously packaging New Year's steamed buns to prevent deformation according to claim 4, characterized in that: An electromagnet (341) is provided on the inflation nozzle (34), and the packaging machine (1) is provided with an electromagnet (341) correspondingly below the inflation nozzle (34), and the two electromagnets (341) maintain magnetic repulsion.

6. The device for continuously packaging New Year's steamed buns to prevent deformation according to claim 5, characterized in that: The material conveying direction of the packaging machine (1) is arranged to be inclined, with the loading port (11) at the top and the unloading port (14) at the bottom; The guide member (31) is fixedly mounted on the feeding port (11), a threaded rod (311) is fixedly mounted on the guide member (31), an adjusting ring (312) is sleeved on the threaded rod (311), the adjusting ring (312) is fixed to the threaded rod (311) by a nut, and the adjusting ring (312) is fixedly connected to the separating rod (321).

7. The device for continuously packaging New Year's steamed buns to prevent deformation according to claim 6, characterized in that: The top heat sealing mechanism (12) comprises a fixing frame (121), a heat pressing execution module (122) and a guide positioning module (123); the fixing frame (121) is fixedly mounted on the packaging machine (1); the heat pressing execution module (122) and the guide positioning module (123) are arranged on the fixing frame (121); The hot pressing execution module (122) comprises two symmetrically arranged heat sealing blocks (1221), and the two heat sealing blocks (1221) are driven by a pneumatic clamping unit (124) to perform a clamping movement; Two groups of the guide positioning modules (123) are provided. The two groups of guide positioning modules (123) are respectively located at the front and rear ends of the hot pressing execution module (122). Each group of the guide positioning modules (123) is composed of a driving wheel (1231) and a driven wheel (1232). The driving wheel (1231) and the driven wheel (1232) are both driven to rotate by a motor, and the driving wheel (1231) and the driven wheel (1232) rotate in opposite directions. A protective cover (125) is installed on the top of the top heat sealing mechanism (12).

8. The device for continuously packaging New Year's steamed buns to prevent deformation according to claim 7, characterized in that: The pneumatic clamping unit (124) is composed of a cylinder (1241), two driving rods (1242) and two clamping rods (1243). The cylinder (1241) is fixedly mounted on the fixed frame (121). The telescopic end of the cylinder (1241) is connected to one end of the two driving rods (1242) by a rotational connection. The other ends of the two driving rods (1242) are respectively rotationally connected to the middle of the two clamping rods (1243). One end of the two clamping rods (1243) is rotationally connected to the fixed frame (121), and the other end is fixedly mounted with the heat sealing block (1221).

9. The device for continuously packaging New Year's steamed buns to prevent deformation according to claim 8, characterized in that: The port heat-sealing cut-off mechanism (13) comprises an upper heat-sealing plate (131) and a lower heat-sealing plate (132), wherein the upper heat-sealing plate (131) is fixedly mounted on a movable bracket (133), and the lower heat-sealing plate (132) is fixedly mounted on a fixed bracket (134), wherein the fixed bracket (134) is fixedly connected to the packaging machine (1), and the movable bracket (133) is slidably connected to the fixed bracket (134); The upper heat sealing plate (131) is located directly above the lower heat sealing plate (132). The upper heat sealing plate (131) and the lower heat sealing plate (132) cooperate with each other to heat seal the port of the separable double-layer bag (2). At the same time, a heat sealing knife is fixedly installed on the upper heat sealing plate (131).

Images