Anti-deformation continuous packaging device for annual steamed buns

Abstract

The invention discloses an anti-deformation continuous packaging device for annual steamed buns, and relates to the technical field of annual steamed bun packaging. Comprising a packaging machine, a separated 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 cutting mechanism and a discharging port, and a first detector and a second detector are installed on the two sides of the port heat-sealing cutting mechanism and used for detecting annual steamed buns; the separation type double-layer bag is composed of an inner layer film and an outer layer film which are independently formed, and the inner layer film and the outer layer film only form a continuous linear combination part at the bottom through hot melting bonding. The inflation assembly comprises a guide piece, a film layer separation piece, an air conveying pipe, an inflation nozzle and a self-adaptive air bag. According to the separated double-layer bag, the inflation assembly is matched 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, limiting packaging can be conducted on the annual steamed buns, and the problem that the annual steamed buns deform due to collision and vibration is effectively solved.

Description

Technical Field

[0001] The present invention relates to the technical field of annual bun packaging, and particularly to a continuous packaging device for preventing deformation of annual buns. Background Art

[0002] As a traditional folk handicraft with unique characteristics in Shanxi Province, Huozhou annual buns are also edible delicacies and occupy an important position in the local folk culture. Their shapes are rich and diverse, covering various shapes with profound meanings, such as animals symbolizing good luck and flowers containing good wishes. Moreover, each shape contains many delicate details and prominent parts, fully demonstrating the unique charm of traditional handicrafts.

[0003] Due to the unique shape of annual buns, traditional inflatable packaging cannot effectively limit the annual buns inside. During transportation, annual buns are extremely prone to shape changes due to shaking and collision. Taking the annual buns in the shape of animals as an example, their slender parts such as ears and tails are extremely fragile and are easily broken or bent during transportation vibrations, and decorative items such as red dates and walnuts often fall off due to vibrations.

[0004] Annual buns not only have edible value but also carry profound cultural value. The integrity of their appearance is crucial for consumers' cultural experience and aesthetic expectations. Once deformed or damaged, it will not only reduce the beauty of the product and fail to meet consumers' aesthetic needs for traditional food culture but also have a negative impact on the market sales and brand image of the product.

[0005] In addition, during the production process of Huozhou annual buns, even for the same-shaped annual buns, due to differences in manual production and steaming processes, there will be slight volume differences. Moreover, annual buns have the characteristics of some shapes being tall, large in volume, and relatively low in price, which determines that it is not suitable to adopt the method of using plastic molds for limit protection and then packaging like mooncakes.

[0006] In summary, we want to design a device specifically for packaging annual buns. This device needs to fully consider the shape characteristics of annual buns, be able to effectively protect the unique shape of annual buns, and at the same time should have the function of continuous packaging similar to traditional packaging machines to ensure that the packaging efficiency is not affected, so as to meet the actual needs of the market for packaging Huozhou annual buns. Summary of the Invention

[0007] The purpose of the present invention is to solve the problems raised in the background art, and to propose a continuous packaging device for preventing deformation of annual buns.

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

[0009] A continuous packaging device for preventing deformation of New Year cakes, comprising: a packaging machine, a separable double-layer bag, and an inflation assembly. The packaging machine is sequentially provided with a feeding port, a top heat-sealing mechanism, a port heat-sealing and cutting mechanism, and a discharging port along the material conveying direction. On both sides of the port heat-sealing and cutting mechanism, a first detector and a second detector are respectively installed to detect the position and state of the New Year cakes.

[0010] The inflation assembly includes a guiding member, a film layer separating member, an air delivery pipe, an inflation nozzle, and an adaptive airbag. The guiding member is used to guide the separable double-layer bag towards the top heat-sealing mechanism.

[0011] The film layer separating member is used to separate the separable double-layer bag. The film layer separating member is connected to the air delivery pipe. At the end of the air delivery pipe, an inflation nozzle and an adaptive airbag are provided to inflate and shape the separable double-layer bag. The inflation nozzle and the adaptive airbag dynamically adjust the air flow rate according to the feedback signals of the first detector and the second detector, thereby changing their own states, preventing gas leakage when the separable double-layer bag is sealed, and pre-shaping for the next round of packaging.

[0012] As a further scheme 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 around the conveying roller group.

[0013] The separable double-layer bag is composed of an independently formed inner layer film and an outer layer film. The inner layer film and the outer layer film are only adhesively bonded by hot melting at the bottom to form a continuous linear bonding part.

[0014] The inner layer film is provided with inwardly protruding bulges.

[0015] As a further scheme of the present invention: the film layer separating member includes a separating rod and separating paddles fixedly installed on the separating rod. The separating rod is located between the inner layer film and the outer layer film.

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

[0017] The separating rod and the separating paddles are made of a flexible deformation material.

[0018] As a further scheme 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 the side close to the outer layer film, and the adaptive airbag is located on the side close to the inner layer film.

[0020] Flow control valves are installed between the air delivery pipe and the inflation nozzle and between the air delivery pipe and the adaptive airbag.

[0021] The adaptive airbag is equipped with a deflation valve, a pressure sensor is equipped on the inflation nozzle, and the pressure sensor cooperates with the deflation valve and the flow control valve.

[0022] As a further solution of the present invention: an electromagnet is provided on the inflation nozzle, an electromagnet is correspondingly arranged below the inflation nozzle of 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 inclined, with the feeding port at the upper part and the discharging port at the lower part;

[0024] The guiding member is fixedly installed at the feeding port, a threaded rod is fixedly installed on the guiding member, an adjusting ring is sleeved on the threaded rod, the adjusting ring is locked and fixed on the threaded rod by a nut, and at the same time the adjusting ring is fixedly connected with the separating rod.

[0025] As a further solution of the present invention: the top heat-sealing mechanism includes a fixed frame, a hot pressing execution module and a guiding and positioning module. The fixed frame is fixedly installed on the packaging machine, and the hot pressing execution module and the guiding and positioning module are evenly arranged on the fixed frame;

[0026] The hot pressing execution module includes two symmetrically arranged heat-sealing blocks, and the two heat-sealing blocks are driven by a pneumatic clamping unit to perform a clamping movement;

[0027] Two groups of guiding and positioning modules are provided. The two groups of guiding and positioning modules are respectively located at the front and rear ends of the hot pressing execution module. Each group of guiding and positioning modules is composed of a driving wheel and a driven wheel. The driving wheel and the driven wheel are both driven by a motor to rotate, 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 is composed of a cylinder, two driving rods and two clamping rods. The cylinder is fixedly installed on the fixed frame. The telescopic end of the cylinder is connected to one end of the two driving rods in a rotating connection manner at the same time. The other ends of the two driving rods are respectively rotatably connected to the middle of the two clamping rods. One end of the two clamping rods is rotatably 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 truncating mechanism includes an upper heat-sealing plate and a lower heat-sealing plate. The upper heat-sealing plate is fixedly installed on the movable bracket, the lower heat-sealing plate is fixedly installed on the 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 port 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 as follows:

[0033] 1: By providing an inflation nozzle and an adaptive airbag to inflate between the inner layer film and the outer layer film of the separable double-layer bag. After the year cake is placed in the separable double-layer bag, as the inflation process proceeds, the inner layer film can closely fit the unique shape of the year cake and become a protective shell for the year cake, limiting the year cake and effectively preventing the year cake from shifting and shaking inside the package. At the same time, the gas filled between the inner layer film and the outer layer film forms a buffer layer, which can absorb the impact force that may be received during transportation, handling, etc., providing buffer protection for the year cake and solving the problem of the year cake being deformed due to collision and vibration, effectively guaranteeing the integrity and aesthetic degree of the year cake.

[0034] 2: The separable double-layer bag and the inflation assembly cooperate with the first detector, the second detector, the top heat-sealing mechanism, and the port heat-sealing and truncating mechanism to jointly construct a coordinated and efficient continuous inflation packaging system. When the first detector senses that the year cake in the separable double-layer bag passes through, the inflation nozzle will quickly respond and start to automatically reduce the air flow rate to avoid over-inflation affecting subsequent operations. At the same time, the adaptive airbag quickly bulges, which can not only effectively prevent gas leakage during heat-sealing and truncating, ensuring the stability of the air pressure inside the package, but also pre-shape the front end of the next separable double-layer bag that is about to enter the packaging process, making full preparations for the next round of packaging; when the second detector detects that the year cake passes through, the port heat-sealing and truncating mechanism immediately starts to perform heat-sealing and truncating operations on the separable double-layer bag to make it an independent packaging unit. At the same time, the adaptive airbag quickly deflates and shrinks to make room for the next inflation cycle, and the inflation nozzle immediately increases the flow rate and starts to inflate and shape the next separable double-layer bag containing the year cake, realizing the efficient and continuous operation of the year cake packaging. Description of the Drawings

[0035] Figure 1 is the overall structural schematic diagram of the present invention;

[0036] Figure 2 is Figure 1 the partial enlarged schematic diagram at A in

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

[0038] Figure 4 is Figure 3 the structural schematic diagram after removing the protective cover;

[0039] Figure 5 Schematic front view structure of the present invention;

[0040] Figure 6 Schematic installation structure of the top heat-sealing mechanism and the port heat-sealing and truncating mechanism of the present invention on a packaging machine;

[0041] Figure 7 Schematic structure of the port heat-sealing and truncating mechanism of the present invention;

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

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

[0044] Figure 10 Schematic structure of the pneumatic clamping unit of the present invention;

[0045] Figure 11 Schematic structure of the inflation component of the present invention;

[0046] Figure 12 is Figure 11 Partial enlarged schematic view at position B in

[0047] Figure 13 is Figure 11 Partial enlarged schematic view at position C in

[0048] Figure 14 Schematic process diagram of the present invention for packaging New Year cakes with a separable double-layer bag and an inflation component;

[0049] Figure 15 Schematic structure of the inner layer film and the outer layer film of the present invention when not inflated;

[0050] Figure 16 Schematic structure of the inner layer film and the outer layer film of the present invention after inflation.

[0051] In the figure: 1, packaging machine; 11, feeding port; 111, conveying roller group; 12, top heat-sealing mechanism; 121, fixing frame; 122, hot-pressing execution module; 1221, heat-sealing block; 123, guiding and 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 and cutting mechanism; 131, upper heat-sealing plate; 132, lower heat-sealing plate; 133, movable bracket; 134, fixed bracket; 14, discharging port; 2, separable double-layer bag; 21, inner layer film; 22, outer layer film; 3, inflation assembly; 31, guiding member; 311, threaded rod; 312, adjusting ring; 32, film layer separating member; 321, separating rod; 3211, air inlet; 322, separating flap; 33, air delivery pipe; 34, inflation nozzle; 341, electromagnet; 35, adaptive airbag; 4, first detector; 41, second detector. Detailed implementation manners

[0052] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0053] Refer to Figure 1-16 , a continuous packaging device for preventing deformation of New Year buns, including a packaging machine 1, a separable double-layer bag 2 and an inflation assembly 3. The packaging machine 1 is sequentially provided with a feeding port 11, a top heat-sealing mechanism 12, a port heat-sealing and cutting mechanism 13 and a discharging port 14 along the material conveying direction. On both sides of the port heat-sealing and cutting mechanism 13, a first detector 4 and a second detector 41 are respectively installed, which are used to detect the position and state of the New Year buns and provide key signals for subsequent packaging actions.

[0054] The material conveying direction of the packaging machine 1 is inclined, with the feeding port 11 at the upper part and the discharging port 14 at the lower part. And the surface of the packaging machine 1 for conveying materials needs to be smooth and unobstructed. During the packaging process, people stand at the feeding port 11 and put the New Year buns into the separable double-layer bag 2. Under the influence of the self-gravity of the New Year buns, the New Year buns and the separable double-layer bag 2 will automatically slide to the discharging port 14. This design utilizes the gravity effect and does not require an additional conveyor belt.

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

[0056] The separable double-layer bag 2 is composed of an independently formed inner layer film 21 and an outer layer film 22. The inner layer film 21 and the outer layer film 22 are only joined at the bottom by hot melt bonding to form a continuous linear joint (as shown in Figure 15 ). When inflating the space between the inner layer film 21 and the outer layer film 22, the inner layer film 21 will closely adhere to the surface of the New Year cake, becoming a protective shell for the New Year cake. Since the bottom of the inner layer film 21 is bonded and fixed to the outer layer film 22, it can limit the position of the New Year cake and effectively prevent the New Year cake from shifting and shaking inside the package. In addition, the inner layer film 21 is provided with inwardly protruding bumps. Due to the special shape of some New Year cakes, it is difficult for the conventional inner layer film 21 to fully adhere. The bumps on the inner layer film 21 can closely contact the irregular parts of the New Year cake and play a role in limiting the position of the New Year cake (as shown in Figure 16 ).

[0057] When using the separable double-layer bag 2 to inflate and package the New Year cake, three technical difficulties need to be solved: First, the inner layer film 21 and the outer layer film 22 need to be separated during the packaging process; second, during the continuous packaging process, precise inflation needs to be achieved between the inner layer film 21 and the outer layer film 22; third, after inflation, it is necessary to prevent air from entering the inner layer film 21 during sealing and prevent air leakage between the inner layer film 21 and the outer layer film 22. To solve the above problems, the separable double-layer bag 2, the inflation assembly 3, the first detector 4, the second detector 41, the top heat-sealing mechanism 12, and the port heat-sealing and truncating mechanism 13 of the present application jointly construct a coordinated and efficient continuous inflation packaging system.

[0058] Referring to Figure 11-16 , the inflation assembly 3 includes a guiding member 31, a film layer separating member 32, an air delivery pipe 33, an inflation nozzle 34, and an adaptive airbag 35. The guiding member 31 is fixedly installed at the feeding port 11 and is used to guide the separable double-layer bag 2 towards the top heat-sealing mechanism 12.

[0059] The film layer separating member 32 includes a separating rod 321 and separating paddles 322 fixedly installed on the separating rod 321. The film layer separating member 32 is installed on the guiding member 31. The separating paddles 322 are located at the edge of the separable double-layer bag 2 and are used to separate the inner layer film 21 and the outer layer film 22. The separating rod 321 is inserted between the inner layer film 21 and the outer layer film 22. The separating rod 321 and the separating paddles 322 are made of flexible deformation materials (such as silica gel, TPU, aluminum alloy, carbon fiber composite materials) and can be bent and shaped arbitrarily. Therefore, they can adjust their own directions along the directions of the inner layer film 21 and the outer layer film 22. When separating the inner layer film 21 and the outer layer film 22, they can better adapt to the shape changes of the separable double-layer bag 2 and are not easy to damage the separable double-layer bag 2.

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

[0061] In addition, flow control valves are installed between the gas pipeline 33 and the inflation nozzle 34, as well as between the gas pipeline 33 and the adaptive airbag 35 to precisely regulate the gas flow rate. At the same time, the adaptive airbag 35 is also equipped with a deflation valve to quickly deflate when needed. In addition, a pressure sensor is installed on the inflation nozzle 34 to detect the air pressure between the inner film 21 and the outer film 22. The flow control valve and the deflation valve can adjust the air flow rate and deflate according to the feedback signal of the pressure sensor.

[0062] Refer to Figure 11-13 , an electromagnet 341 is provided on the inflation nozzle 34, and the packaging machine 1 is correspondingly provided with an electromagnet 341 below 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 leaving scratches on the separable double-layer bag 2 and affecting the smooth transmission of the separable double-layer bag 2.

[0063] Refer to 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. At the same time, 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 New Year cake is being transported past the inflation nozzle 34 and the adaptive airbag 35, the adaptive airbag 35 is in a contracted state. When the first detector 4 senses that the New Year cake in the separable double-layer bag has passed, it means that the inflation packaging of this New Year cake is completed and it is necessary to cut off and seal (as shown in Figure 13 ). At this time, the inflation nozzle 34 starts to automatically reduce the gas flow rate (to avoid over-inflation causing the separable double-layer bag 2 to burst during sealing);

[0065] At the same time, the adaptive airbag 35 quickly inflates, playing the following three roles: First, it squeezes and pre-seals the inner film 21 to avoid air flow squeezing into the inner film 21 during the sealing process, resulting in the inner film 21 not fitting well with the New Year cake and weakening the limiting effect; Second, it blocks between the inner film 21 and the outer film 22 to prevent gas leakage between the inner film 21 and the outer film 22 during heat-sealing and cutting. It should be noted that after the adaptive airbag 35 inflates, it does not completely fit with the outer film 22 and needs to leave a gap so that the gas squeezed out at the port can be discharged during hot-press sealing (because the adaptive airbag 35 is close to the inner film 21 and there are the inflation nozzle 34 and the gas pipeline 33 on one side away from the outer film 22, so after the adaptive airbag 35 inflates, it only contacts the inner film 21 and leaves a gap with the outer film 22). Third, it pre-shapes the front end of the next separable double-layer bag 2 about to enter the packaging process, making full preparations for the next round of packaging.

[0066] When the second detector 41 detects that the New Year cake has passed, the port heat-sealing and cutting mechanism 13 is immediately activated to perform heat-sealing and cutting operations on the separable double-layer bag 2, turning it into an independent packaging unit. At the same time, the adaptive airbag 35 quickly deflates and shrinks to make room for the next inflation packaging, while the inflation nozzle 34 immediately increases the flow rate and starts inflating and shaping the next separable double-layer bag 2 containing the New Year cake.

[0067] Refer to Figure 11 , a threaded rod 311 is fixedly installed on the guide member 31. An adjusting ring 312 is sleeved on the threaded rod 311. The adjusting ring 312 is locked and fixed on the threaded rod 311 by a nut. At the same time, the adjusting ring 312 is fixedly connected to the separating rod 321. By adjusting the adjusting ring 312, the height and orientation of the separating rod 321 can be adjusted.

[0068] Refer to Figure 8-10 , the top heat-sealing mechanism 12 includes a fixing frame 121, a hot-pressing execution module 122, and a guiding and positioning module 123. The fixing frame 121 is fixedly installed on the packaging machine 1. The hot-pressing execution module 122 and the guiding and positioning module 123 are evenly arranged on the fixing 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 movements. 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 fixing frame 121. The telescopic end of the cylinder 1241 is respectively connected to one end of the two driving rods 1242 in a rotatable connection manner. The other ends of the two driving rods 1242 are respectively rotatably connected to the two clamping rods 1243. One end of the two clamping rods 1243 is rotatably connected to the fixing frame 121, and the other end is fixedly installed with the heat-sealing block 1221. Through the telescopic movement of the cylinder 1241, the driving rods 1242 and the clamping rods 1243 are driven to act, realizing the clamping and loosening of the heat-sealing block 1221, thereby heat-sealing the top of the separable double-layer bag 2.

[0069] Two groups of guiding and positioning modules 123 are provided, respectively located at the front and rear ends of the hot-pressing execution module 122. Each group of guiding and positioning modules 123 consists of a driving wheel 1231 and a driven wheel 1232. The driving wheel 1231 and the driven wheel 1232 are both driven by motors to rotate in opposite directions (the driving wheel 1231 and the driven wheel 1232 are driven to rotate by the motor-driven pulley and gear set). Their function is to guide and press the separable double-layer bag 2 during the heat-sealing process (the tops of the inner film 21 and the outer film 22 are heat-sealed together). A protective cover 125 is also installed on the top of the top heat-sealing mechanism 12 to protect the safety of the operator and prevent foreign objects from entering the heat-sealing mechanism and affecting the heat-sealing effect.

[0070] The port heat-sealing and truncating mechanism 13 includes an upper heat-sealing plate 131 and a lower heat-sealing plate 132. The upper heat-sealing plate 131 is fixedly installed on the movable bracket 133, and the lower heat-sealing plate 132 is fixedly installed on the 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 cooperate 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 (this is the prior art). During heat-sealing, the heat-sealing knife can truncate the packaging bag to make it an independent packaging unit.

[0071] Further explanation, the above-mentioned fixed connection, unless otherwise clearly stipulated and limited, should be understood in a broad sense. For example, it can be welding, gluing, or integrally formed setting, 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: Feeding. The conveying roller group 111 rotates to convey the separable double-layer bag 2 to the feeding port 11. The guiding member 31 accurately guides the separable double-layer bag 2 towards the top heat-sealing mechanism 12. During this process, the operator places the New Year buns on the separable double-layer bag 2 at the feeding port 11. Due to the inclined material conveying direction of the packaging machine 1, the New Year buns and the separable double-layer bag 2 slide towards the top heat-sealing mechanism 12 under the action of gravity;

[0074] S2: Film layer separation. The separating rod 321 and the separating flap 322 separate the inner layer film 21 and the outer layer 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 make it bag-shaped;

[0076] S4: Inflating and shaping. The inflation nozzle 34 inflates to make the inner layer film 21 fit the shape of the New Year buns to limit the New Year buns. When the first detector 4 senses that the New Year buns in the separable double-layer bag 2 have passed, the inflation nozzle 34 starts to reduce the flow rate. At the same time, the adaptive airbag 35 will bulge to prevent air leakage during cutting and play a shaping effect on the front end of the next separable double-layer bag 2;

[0077] S5: Port heat-sealing and truncating. When the second detector 41 senses that the New Year buns have passed, the port heat-sealing and truncating mechanism 13 is activated. The movable bracket 133 drives the upper heat-sealing plate 131 to move downward and cooperate 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 truncates the packaging bag to make it an independent package;

[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 shrunk to make room for the next inflation packaging. The inflation nozzle 34 starts to increase the flow rate and prepares to inflate and shape the next separate 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 implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. 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 separate double-layer bag (2) and an inflation component (3), wherein the packaging machine (1) is provided with a feed port (11), a top heat-sealing mechanism (12), a port heat-sealing cut-off mechanism (13) and a feed port (14) in sequence along the material conveying direction, and a first detector (4) and a second detector (41) are respectively installed on both sides of the port heat-sealing cut-off mechanism (13) for detecting the position and state of the New Year's steamed bun; The inflation component (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 separated 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 an air supply pipe (33). An air filling 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 air filling nozzle (34) and the adaptive air bag (35) dynamically adjust the air flow rate according to the feedback signals of the first detector (4) and the second detector (41), thereby changing their own state to prevent gas leakage when the separable double-layer bag (2) is sealed, and pre-shaping is performed for the next round of packaging.

2. The device for continuously packaging steamed buns to prevent deformation according to claim 1 is 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 split 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 bonded at the bottom by hot-melt bonding to form a continuous linear joint; The inner layer membrane (21) is provided with a bulge protruding inwards.

3. The device for continuously packaging steamed buns to prevent deformation according to claim 2 is characterized in that: The film layer separation member (32) comprises a separation rod (321) and a separation paddle (322) fixedly mounted on the separation rod (321); the separation rod (321) is located between the inner film (21) and the outer film (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 is 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), and the inflation nozzle (34) is close to the first detector (4), and the adaptive airbag (35) is 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 supply pipe (33) and the inflation nozzle (34) and between the air supply pipe (33) and the adaptive airbag (35); The adaptive airbag (35) is equipped with an air release valve, and the inflation nozzle (34) is equipped with an air pressure sensor, and the air pressure sensor cooperates with the air release valve and the flow control valve.

5. The device for continuously packaging steamed buns to prevent deformation according to claim 4 is characterized in that: The inflation nozzle (34) is provided with an electromagnet (341), 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 steamed buns to prevent deformation according to claim 5 is characterized in that: The material conveying direction of the packaging machine (1) is arranged to be inclined, with the loading port (11) being at the top and the unloading port (14) being at the bottom; The guide member (31) is fixedly mounted on the feed 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 fixedly secured to the threaded rod (311) by a nut; and the adjusting ring (312) is fixedly connected to the separation rod (321).

7. The device for continuously packaging steamed buns to prevent deformation according to claim 6 is characterized in that: The top heat sealing mechanism (12) comprises a fixed frame (121), a heat pressing execution module (122) and a guide positioning module (123); the fixed frame (121) is fixedly mounted on the packaging machine (1); and the heat pressing execution module (122) and the guide positioning module (123) are arranged on the fixed 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 clamping movement; Two groups of the guide positioning modules (123) are provided, and the two groups of guide positioning modules (123) are respectively located at the front and rear ends of the hot pressing execution module (122), and each group of the guide positioning modules (123) is composed of a driving wheel (1231) and a driven wheel (1232), and 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 steamed buns to prevent deformation according to claim 7 is 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 a 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 a heat sealing block (1221).

9. The device for continuously packaging steamed buns to prevent deformation according to claim 8 is 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), and 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), while a heat sealing knife is fixedly installed on the upper heat sealing plate (131).

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