An extrusion device for processing an extruded food and an extrusion method thereof

Abstract

This invention relates to an extrusion device for processing puffed food, comprising a housing and a turntable. The turntable is coaxially rotatably disposed within the lower part of the housing. Within the housing, above the turntable, a puffing station, a discharging station, and several filling stations are arranged circumferentially. Multiple mold assemblies are evenly distributed circumferentially on the turntable. Each mold assembly includes a positioning shaft, a base plate, a mold plate, and a mold shell. The puffing station of the housing is equipped with an extrusion assembly, the discharging station with a discharging assembly, and the filling station with a filling assembly. A puffing method for processing puffed food includes the following steps: S1, primary filling; S2, subsequent filling; S3, sealed puffing; S4, discharging. The purpose of this invention is to solve or at least alleviate the problem of existing puffing equipment and methods failing to puff multiple materials into a single layer, and to provide an extrusion device and method for processing puffed food.

Description

Technical Field

[0001] This invention belongs to the field of food puffing processing technology, and particularly relates to a puffing device and puffing method for processing puffed food. Background Technology

[0002] Puffed foods are delicious snacks made from grains, potatoes, beans, and other raw materials through a process of grinding, sterilization, puffing, and baking. As a popular consumer product, their annual sales are growing rapidly both nationally and globally. Grinding enhances the puffing effect, facilitates nutrient absorption, and improves taste.

[0003] Existing puffing equipment can only puff single raw materials or single materials mixed with multiple raw materials. The shape is difficult to control, the taste is not rich, and it is impossible to puff multiple materials into a single layer. Summary of the Invention

[0004] The purpose of this invention is to overcome the shortcomings of the prior art, solve or at least alleviate the problem of puffing multiple materials into a single layer in existing puffing equipment and methods, and provide a puffing device and puffing method for processing puffed food.

[0005] This invention is achieved through the following technical solution:

[0006] An extrusion device for processing extruded food includes a shell and a turntable. The shell is cylindrical, and the turntable is coaxially rotatably disposed in the lower part of the shell. The space above the turntable inside the shell has an extrusion station, an unloading station, and several filling stations evenly distributed circumferentially. Multiple mold assemblies are evenly distributed circumferentially on the turntable, and the number of mold assemblies is equal to the total number of extrusion stations, unloading stations, and filling stations.

[0007] The mold assembly includes a positioning shaft, a base, a mold plate, and a mold shell. The positioning shaft is vertically arranged and its lower part is rotatably mounted on a turntable. The base is axially slidably fitted onto the upper part of the positioning shaft. Multiple mold plates are longitudinally stacked above the base, and all mold plates are axially slidably fitted onto the positioning shaft. Multiple mold shells are circumferentially evenly fitted onto the mold plates. The number of mold plates is greater than the number of injection stations. A molding hole is provided in the middle of the mold shell, and the upper and lower end faces of the mold shell are flush with the upper and lower end faces of the mold plate, respectively.

[0008] The outer shell is provided with an expansion assembly at the expansion stage. The expansion assembly includes an expansion cylinder and a piston plate. The expansion cylinder is longitudinally slidably disposed on the outer shell, and the piston plate is sealed and slidably disposed inside the expansion cylinder.

[0009] The unloading station of the outer shell is equipped with an unloading assembly, which includes unloading rods. The number of unloading rods is equal to the number of mold shells on the mold plate and they are arranged in a one-to-one correspondence. The unloading rods are longitudinally slidably disposed on the outer shell.

[0010] The injection station of the outer shell is equipped with an injection assembly, which includes an injection tube. The injection tube is arranged laterally along the radial direction of the outer shell. One end of the injection tube is connected to the material source, and the other end is located inside the outer shell. An injection hole is provided on the lower side of the end of the injection tube located inside the outer shell. The position of the injection hole corresponds to the position of the mold shell.

[0011] To further realize the present invention, the following technical solutions may be preferred:

[0012] Preferably, the system further includes a drive assembly, which includes a main motor, an auxiliary motor, a central gear, and a distribution gear. The main motor is fixedly installed in the lower part of the housing, and its output shaft is coaxially and fixedly connected to the turntable. The central gear is rotatably fitted onto the output shaft of the main motor. The distribution gear is fixedly fitted onto the positioning shaft. The distribution gear and the central gear mesh with each other for transmission. The number of distribution gears and positioning shafts are equal and they are arranged in a one-to-one correspondence. The auxiliary motor is fixedly installed below the turntable, and its output shaft is connected to the central gear for transmission.

[0013] Preferably, the bottom surface of the injection tube of the injection station adjacent to the unloading station is in contact with the upper surface of the bottommost mold plate, and the distance between the height of the injection tube of the subsequent injection station and the height of the injection tube of the preceding injection station is equal to the thickness of the mold plate according to the rotation direction of the turntable.

[0014] Preferably, the mold plate has chamfers at both the top and bottom ends of its circumference, and the injection tube has lifting platforms on both sides of the end inside the outer shell. The lower surface of the lifting platform is flush with the lower surface of the injection tube, and the upper surface is an inclined surface that is lower on the outside and higher on the inside.

[0015] Preferably, the puffing assembly further includes a sealing cylinder and a puffing cylinder, wherein the fixed section and the telescopic section of the sealing cylinder are respectively fixedly connected to the outer shell and the puffing cylinder, the fixed section of the puffing cylinder is fixedly connected to the puffing cylinder, and the telescopic section of the puffing cylinder is rotatably connected to the piston plate.

[0016] The sealing cylinder drives the expansion cylinder and the expansion cylinder to rise and fall together. The lower end of the expansion cylinder presses against the uppermost mold plate, so that the bottom plate and the lowermost mold plate, any two adjacent mold plates, and the lower end of the expansion cylinder and the uppermost mold plate are all in a sealed state. The expansion cylinder drives the piston plate to rise and fall inside the expansion cylinder. The piston plate moves down, which increases the pressure inside the expansion cylinder, causing the material inside the mold shell to expand under pressure.

[0017] Preferably, sealing rings are fitted on both the upper and lower surfaces of the mold shell. The sealing rings are coaxially arranged with the mold plate and are located on the outer side of the circle formed by multiple mold shells. The sealing rings on the upper surface of the lower mold plate are arranged opposite to the sealing rings on the lower surface of the upper mold plate.

[0018] The upper surface of the chassis presses against the sealing ring on the lower surface of the bottom mold plate, and the lower end of the puffing cylinder is provided with a flange that folds outward laterally, which presses against the sealing ring on the upper surface of the top mold plate.

[0019] Preferably, the unloading assembly further includes an unloading disc and an unloading cylinder. The fixed section of the unloading cylinder is fixedly installed on the outer shell, and the telescopic section of the unloading cylinder is vertically downward. The unloading disc is rotatably installed on the telescopic section of the unloading cylinder. The upper end of the unloading rod is fixedly connected to the unloading disc. After the lower part of the unloading rod extends into the mold shell, the unloading disc rotates with the mold disc.

[0020] Preferably, it further includes a positioning component, which includes an outer positioning rail and an inner positioning rail. The outer positioning rail and the inner positioning rail are both fixedly connected to the outer shell. The outer positioning rail is arranged along the inner circumference of the outer shell. The inner positioning rail is coaxially arranged with the outer positioning rail. The inner and outer sides of the bottom surface of the chassis are slidably attached to the inner positioning rail and the outer positioning rail, respectively.

[0021] The outer positioning rail and the inner positioning rail are at the same height in the section of the expansion station. The height of the outer positioning rail and the inner positioning rail in the section of the unloading station is lower than the height of their respective sections in the expansion station. The outer positioning rail and the inner positioning rail are smoothly inclined between the section of the unloading station and the section of the expansion station.

[0022] The positioning component also includes a partition plate, which is horizontally fixed to the unloading station of the outer shell. The lower surface of the mold plate at the bottom is slidably attached to the upper surface of the partition plate, and an unloading hole is provided in the middle of the partition plate.

[0023] Preferably, the longitudinal section of the chassis is an isosceles trapezoid with a larger upper section and a smaller lower section, and the outer positioning rail and the inner positioning rail are respectively arranged on the inclined surface of the lower circumference of the chassis.

[0024] A method for processing puffed food includes the following steps:

[0025] S1. One-time injection: When a mold assembly rotates to the injection station of the adjacent unloading station, the injection pipe presses against the upper surface of the bottom mold plate. At the same time, the lifting platform on the injection pipe moves all the mold plates above the mold plate upward. The end of the injection pipe extends between the two mold plates. The base and mold plates are rotated, and the injection pipe injects material into the mold shell on the bottom mold plate in sequence.

[0026] S2, Subsequent Injection: When the mold assembly rotates to the subsequent injection station, the injection tube presses against the upper surface of the mold plate adjacent to the already injected mold plate. At the same time, the lifting platform on the injection tube moves all the mold plates above the mold plate upwards. The end of the injection tube extends between the two mold plates. The base and the mold plate are rotated, and the injection tube injects material into the mold shell on the mold plate below the injection tube in sequence.

[0027] S3, Sealed Expansion: When the mold assembly rotates to the expansion position, the lower end of the expansion cylinder presses against the uppermost mold shell, making the expansion cylinder sealed. The piston plate moves down, increasing the pressure inside the expansion cylinder, causing the material inside the mold shell to expand under pressure. After expansion is completed, the expansion cylinder and piston plate return to their initial state.

[0028] S4. Unloading: When the mold assembly rotates to the unloading station, all mold plates maintain a fixed height position, the chassis descends, the unloading rod descends and enters the mold shell, and the expanded material is pressed out of the mold shell. After that, the unloading rod returns to its initial state.

[0029] The beneficial effects of the present invention through the above technical solution are:

[0030] The mold assembly of this invention includes multiple stacked mold plates. During injection, different types of materials are injected layer by layer into the mold shells of different layers of mold plates. By rotating the mold plates relative to the injection tube, all mold shells on the mold plates are filled with material. This not only allows for layered injection but also enables control of the injection amount in each layer. The number of mold plates is greater than the number of layers in the puffed food, thus preserving space for shaping after puffing and controlling the shape of the puffed food. Layered puffed food enhances the texture and differentiates itself from other puffed foods, making it more attractive to customers. Attached Figure Description

[0031] Figure 1 This is a cross-sectional view of the structure of the present invention;

[0032] Figure 2 For the present invention Figure 1 Sectional view at point AA;

[0033] Figure 3 For the present invention Figure 1 Sectional view at point BB;

[0034] Figure 4 For the present invention Figure 1 Sectional view at CC;

[0035] Figure 5 This is a schematic diagram of the structure of the present invention;

[0036] Figure 6 This is a schematic diagram of the structure of the present invention with the outer shell removed;

[0037] Figure 7This is a schematic diagram of the injection tube structure of the present invention;

[0038] Figure 8 This is a schematic diagram of the unloading assembly of the present invention;

[0039] Figure 9 This is a schematic diagram of the mold assembly of the present invention;

[0040] Figure 10 This is a cross-sectional view of the mold assembly of the present invention;

[0041] Figure 11 This is a schematic diagram of the assembly of the mold plate and the mold shell of the present invention;

[0042] Figure 12 This is a cross-sectional view of the structure of the puffing component of the present invention;

[0043] Figure 13 This is a schematic diagram of the positioning component of the present invention;

[0044] Wherein: 1-Outer shell; 2-Turntable; 3-Positioning shaft; 4-Chassis; 5-Mold plate; 6-Mold shell; 7-Expanding cylinder; 8-Piston plate; 9-Unloading rod; 10-Injection pipe; 11-Main motor; 12-Auxiliary motor; 13-Center gear; 14-Split gear; 15-Lifting platform; 16-Sealing cylinder; 17-Expanding cylinder; 18-Unloading plate; 19-Unloading cylinder; 20-Outer positioning rail; 21-Inner positioning rail; 22-Baffle plate. Detailed Implementation

[0045] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" 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 connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0046] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0047] Example 1:

[0048] like Figures 1-13As shown, an extrusion device for processing extruded food includes a shell 1 and a turntable 2. The shell 1 is a cylindrical shell. The turntable 2 is coaxially rotatably disposed in the lower part of the shell 1. The space above the turntable 2 inside the shell 1 has an extrusion station, an unloading station, and several filling stations evenly distributed circumferentially. Multiple mold assemblies are evenly distributed circumferentially on the turntable 2. The number of mold assemblies is equal to the total number of extrusion stations, unloading stations, and filling stations.

[0049] The mold assembly includes a positioning shaft 3, a base plate 4, a mold plate 5, and a mold shell 6. The positioning shaft 3 is vertically arranged and its lower part is rotatably mounted on the turntable 2. The base plate 4 is axially slidably fitted onto the upper part of the positioning shaft 3. Multiple mold plates 5 are longitudinally stacked on top of the base plate 4. All mold plates 5 are axially slidably fitted onto the positioning shaft 3. Multiple mold shells 6 are circumferentially evenly fitted onto the mold plates 5. The number of mold plates 5 is greater than the number of injection stations. A molding hole is provided in the middle of the mold shell 6. The upper and lower end faces of the mold shell 6 are flush with the upper and lower end faces of the mold plate 5, respectively.

[0050] The expansion station of the outer shell 1 is provided with an expansion assembly, which includes an expansion cylinder 7 and a piston plate 8. The expansion cylinder 7 is longitudinally slidably disposed in the outer shell 1, and the piston plate 8 is sealed and slidably disposed inside the expansion cylinder 7.

[0051] The unloading station of the outer shell 1 is equipped with an unloading assembly, which includes an unloading rod 9. The number of unloading rods 9 and the mold shells 6 on the mold plate 5 are equal and correspond one-to-one. The unloading rods 9 are longitudinally slidably disposed on the outer shell 1.

[0052] The injection station of the outer shell 1 is equipped with an injection assembly, which includes an injection tube 10. The injection tube 10 is arranged laterally along the radial direction of the outer shell 1. One end of the injection tube 10 is connected to the material source, and the other end is located inside the outer shell 1. An injection hole is provided on the lower side of the end of the injection tube 10 located inside the outer shell 1. The position of the injection hole corresponds to the position of the mold shell 6.

[0053] The mold assembly of this invention includes multiple stacked mold plates 5. During injection, different types of materials are injected layer by layer into the mold shells 6 of different layers of mold plates 5. By rotating the mold plates 5 relative to the injection tube 10, all mold shells 6 on the mold plates 5 are filled with material. This not only allows for layered injection but also enables control of the injection amount in each layer. The number of mold plates 5 is greater than the number of layers in the puffed food, thereby preserving the shaping space after puffing and controlling the shape of the puffed food. Layered puffed food can enhance the texture and differentiate itself from other puffed foods, thus making it more attractive to customers.

[0054] To enable the turntable 2 and the mold assembly to rotate separately and to make all mold assemblies rotate synchronously, a drive assembly is also included. The drive assembly includes a main motor 11, an auxiliary motor 12, a central gear 13, and a distribution gear 14. The main motor 11 is fixedly installed in the lower part of the housing 1 and its output shaft is coaxially and fixedly connected to the turntable 2. The central gear 13 is rotatably fitted onto the output shaft of the main motor 11. The distribution gear 14 is fixedly fitted onto the positioning shaft 3. The distribution gear 14 and the central gear 13 mesh with each other for transmission. The number of distribution gears 14 and the positioning shaft 3 are equal and they are arranged in a one-to-one correspondence. The auxiliary motor 12 is fixedly installed below the turntable 2, and the output shaft of the auxiliary motor 12 is connected to the central gear 13 for transmission.

[0055] To optimize the product structure, the injection tube 10 can extend between the two mold plates 5. The bottom surface of the injection tube 10 of the injection station adjacent to the unloading station is in contact with the upper surface of the bottom mold plate 5. According to the rotation direction of the turntable 2, the distance between the height of the injection tube 10 of the rear injection station and the height of the injection tube 10 of the front injection station is equal to the thickness of the mold plate 5.

[0056] The mold plate 5 has chamfers at both the top and bottom of its circumference. The injection tube 10 is located inside the outer shell 1 and has lifting platforms 15 on both sides of its end. The lower surface of the lifting platform 15 is flush with the lower surface of the injection tube 10, and the upper surface is a slope with the outer side lower than the inner side.

[0057] Both lifting platforms 15 are equipped with blocking sensors on their lower sides. When both blocking sensors are in the blocking state, the injection pipe 10 is in the open state. When both blocking sensors are in the open state, the injection pipe 10 is in the closed state. The injection pipe 10 is in a constant pressure state when injecting material. When the corresponding mold shell 6 is full of material, the pressure increases and the injection pipe 10 closes.

[0058] The puffing assembly also includes a sealing cylinder 16 and a puffing cylinder 17. The fixed section and the telescopic section of the sealing cylinder 16 are respectively fixedly connected to the outer shell 1 and the puffing cylinder 7. The fixed section of the puffing cylinder 17 is fixedly connected to the puffing cylinder 7, and the telescopic section of the puffing cylinder 17 is rotatably connected to the piston plate 8.

[0059] The sealing cylinder 16 drives the puffing cylinder 7 and the puffing cylinder 17 to rise and fall together. The lower end of the puffing cylinder 7 presses against the uppermost mold plate 5, so that the base plate 4 and the lowermost mold plate 5, any two adjacent mold plates 5, and the lower end of the puffing cylinder 7 and the uppermost mold plate 5 are all in a sealed state. The puffing cylinder 17 drives the piston plate 8 to rise and fall inside the puffing cylinder 7. The piston plate 8 moves down, which increases the pressure inside the puffing cylinder 7, causing the material inside the mold shell 6 to expand under pressure.

[0060] In order to keep the expansion in a sealed state, sealing rings are fitted on both the upper and lower surfaces of the mold shell 6. The sealing rings are coaxially arranged with the mold plate 5. The sealing rings are located on the outer side of the circle formed by multiple mold shells 6. The sealing ring on the upper surface of the lower mold plate 5 is arranged opposite to the sealing ring on the lower surface of the upper mold plate 5.

[0061] The upper surface of the chassis 4 presses against the sealing ring on the lower surface of the mold plate 5 located at the bottom. The lower end of the puffing cylinder 7 is provided with a flange that folds outward laterally, and the flange presses against the sealing ring on the upper surface of the mold plate 5 located at the top.

[0062] To prevent the rotating mold plate 5 from interfering with the lifting unloading rod 9 during unloading, the unloading assembly also includes an unloading plate 18 and an unloading cylinder 19. The fixed section of the unloading cylinder 19 is fixedly installed on the outer shell 1, and the telescopic section of the unloading cylinder 19 is vertically downward. The unloading plate 18 is rotatably installed on the telescopic section of the unloading cylinder 19. The upper end of the unloading rod 9 is fixedly connected to the unloading plate 18. After the lower part of the unloading rod 9 extends into the mold shell 6, the unloading plate 18 rotates with the mold plate 5.

[0063] To control the height and position of the chassis 4 and the mold plate 5, a positioning component is also included. The positioning component includes an outer positioning rail 20 and an inner positioning rail 21. Both the outer positioning rail 20 and the inner positioning rail 21 are fixedly connected to the outer shell 1. The outer positioning rail 20 is arranged along the inner circumference of the outer shell 1. The inner positioning rail 21 is coaxially arranged with the outer positioning rail 20. The inner and outer sides of the bottom surface of the chassis 4 are slidably attached to the inner positioning rail 21 and the outer positioning rail 20, respectively.

[0064] The outer positioning rail 20 and the inner positioning rail 21 are at the same height in the section of the expansion station. The height of the outer positioning rail 20 and the inner positioning rail 21 in the section of the unloading station is lower than the height of the section of the expansion station. The outer positioning rail 20 and the inner positioning rail 21 are smoothly inclined between the section of the unloading station and the section of the expansion station.

[0065] The positioning component also includes a partition 22, which is horizontally fixed to the unloading station of the outer shell 1. The lower surface of the mold plate 5 located at the bottom slides against the upper surface of the partition 22, and an unloading hole is provided in the middle of the partition 22.

[0066] To facilitate the rotation of the chassis 4, the longitudinal section of the chassis 4 is an isosceles trapezoid with a larger upper section and a smaller lower section. The outer positioning rail 20 and the inner positioning rail 21 are respectively set on the inclined surface of the lower circumference of the chassis 4.

[0067] Example 2:

[0068] A method for processing puffed food includes the following steps:

[0069] S1. In a single injection, when a mold assembly rotates to the injection station of the adjacent unloading station, the injection pipe 10 presses against the upper surface of the bottom mold plate 5. At the same time, the lifting platform 15 on the injection pipe 10 moves all the mold plates 5 above the mold plate 5 upward. The end of the injection pipe 10 extends between the two mold plates 5. The base plate 4 and the mold plate 5 are rotated, and the injection pipe 10 injects material into the mold shell 6 on the bottom mold plate 5 in sequence.

[0070] S2. Subsequent injection: When the mold assembly rotates to the subsequent injection station, the injection tube 10 presses against the upper surface of the mold plate 5 adjacent to the already injected mold plate 5. At the same time, the lifting platform 15 on the injection tube 10 moves all the mold plates 5 above the mold plate 5 upward. The end of the injection tube 10 extends between the two mold plates 5. The base plate 4 and the mold plate 5 are rotated, and the injection tube 10 injects material into the mold shell 6 on the mold plate 5 below the injection tube 10 in sequence.

[0071] S3, Sealed Expansion: When the mold assembly rotates to the expansion position, the lower end of the expansion cylinder 7 presses against the uppermost mold shell 6, so that the expansion cylinder 7 is in a sealed state. The piston plate 8 moves down to increase the pressure inside the expansion cylinder 7, so that the material inside the mold shell 6 is expanded under pressure. After the expansion is completed, the expansion cylinder 7 and the piston plate 8 return to the initial state.

[0072] S4. Unloading: When the mold assembly rotates to the unloading station, all mold plates 5 maintain a fixed height position, the base plate 4 descends, the unloading rod 9 descends and enters the mold shell 6, and the expanded material is pressed out of the mold shell 6. After that, the unloading rod 9 returns to its initial state.

[0073] Finally, it should be noted that the above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A puffing device for processing puffed food, characterized in that, The device includes an outer shell (1) and a turntable (2). The outer shell (1) is a cylindrical shell. The turntable (2) is coaxially rotatably disposed in the lower part of the outer shell (1). The space above the turntable (2) inside the outer shell (1) has a puffing station, a unloading station and several injection stations arranged in a circular pattern. Multiple mold assemblies are evenly distributed on the circumference of the turntable (2). The number of mold assemblies is equal to the total number of puffing stations, unloading stations and injection stations. The mold assembly includes a positioning shaft (3), a base plate (4), a mold plate (5), and a mold shell (6). The positioning shaft (3) is vertically arranged and its lower part is rotatably arranged on the turntable (2). The base plate (4) is axially slidably fitted onto the upper part of the positioning shaft (3). Multiple mold plates (5) are longitudinally stacked on top of the base plate (4). All mold plates (5) are axially slidably fitted onto the positioning shaft (3). Multiple mold shells (6) are circumferentially evenly fitted onto the mold plate (5). The number of mold plates (5) is greater than the number of injection stations. A molding hole is provided in the middle of the mold shell (6). The upper and lower end faces of the mold shell (6) are flush with the upper and lower end faces of the mold plate (5), respectively. The expansion station of the outer shell (1) is provided with an expansion assembly, which includes an expansion cylinder (7) and a piston plate (8). The expansion cylinder (7) is longitudinally slidably disposed on the outer shell (1), and the piston plate (8) is sealed and slidably disposed inside the expansion cylinder (7). The unloading station of the outer shell (1) is provided with an unloading assembly, which includes an unloading rod (9). The number of unloading rods (9) and the number of mold shells (6) on the mold plate (5) are equal and they are arranged in a one-to-one correspondence. The unloading rods (9) are longitudinally slidably arranged on the outer shell (1). The injection station of the outer shell (1) is provided with an injection assembly, which includes an injection tube (10). The injection tube (10) is arranged laterally along the radial direction of the outer shell (1). One end of the injection tube (10) is connected to the material source, and the other end is located inside the outer shell (1). An injection hole is provided on the lower side of the end of the injection tube (10) located inside the outer shell (1). The position of the injection hole corresponds to the position of the mold shell (6).

2. The puffing device for processing puffed food according to claim 1, characterized in that, It also includes a drive assembly, which includes a main motor (11), an auxiliary motor (12), a central gear (13), and a split gear (14). The main motor (11) is fixedly installed in the lower part of the housing (1) and its output shaft is coaxially fixedly connected to the turntable (2). The central gear (13) is rotated and fitted onto the output shaft of the main motor (11). The split gear (14) is fixedly fitted onto the positioning shaft (3). The split gear (14) and the central gear (13) mesh and drive each other. The number of split gears (14) and the positioning shaft (3) are equal and they are set one-to-one. The auxiliary motor (12) is fixedly installed below the turntable (2), and the output shaft of the auxiliary motor (12) is connected to the central gear (13) for transmission.

3. The puffing device for processing puffed food according to claim 1, characterized in that, The bottom surface of the injection tube (10) of the injection station adjacent to the unloading station is in contact with the upper surface of the mold plate (5) located at the bottom. According to the rotation direction of the turntable (2), the distance between the height of the injection tube (10) of the rear injection station and the height of the injection tube (10) of the front injection station is equal to the thickness of the mold plate (5).

4. The puffing device for processing puffed food according to claim 3, characterized in that, The mold plate (5) has chamfers at both the top and bottom of its circumference. The injection tube (10) is located inside the outer shell (1) and has lifting platforms (15) on both sides. The lower surface of the lifting platform (15) is flush with the lower surface of the injection tube (10), and the upper surface is a slope with the outside lower than the inside.

5. The puffing device for processing puffed food according to claim 1, characterized in that, The puffing assembly also includes a sealing cylinder (16) and a puffing cylinder (17). The fixed section and the telescopic section of the sealing cylinder (16) are respectively fixedly connected to the outer shell (1) and the puffing cylinder (7). The fixed section of the puffing cylinder (17) is fixedly connected to the puffing cylinder (7), and the telescopic section of the puffing cylinder (17) is rotatably connected to the piston plate (8). The sealing cylinder (16) drives the expansion cylinder (7) and the expansion cylinder (17) to rise and fall together. The lower end of the expansion cylinder (7) presses against the uppermost mold plate (5), so that the base plate (4) and the lowermost mold plate (5), any two adjacent mold plates (5), and the lower end of the expansion cylinder (7) and the uppermost mold plate (5) are all in a sealed state. The expansion cylinder (17) drives the piston plate (8) to rise and fall inside the expansion cylinder (7). The piston plate (8) moves down, which increases the pressure inside the expansion cylinder (7), causing the material inside the mold shell (6) to expand under pressure.

6. The puffing device for processing puffed food according to claim 5, characterized in that, The upper and lower surfaces of the mold shell (6) are fitted with sealing rings. The sealing rings are coaxially arranged with the mold plate (5). The sealing rings are located on the outer side of the circle formed by multiple mold shells (6). The sealing rings on the upper surface of the lower mold plate (5) are arranged opposite to the sealing rings on the lower surface of the upper mold plate (5). The upper surface of the chassis (4) presses against the sealing ring on the lower surface of the mold plate (5) located at the bottom. The lower end of the puffing cylinder (7) is provided with a flange that folds outward laterally, and the flange presses against the sealing ring on the upper surface of the mold plate (5) located at the top.

7. The puffing device for processing puffed food according to claim 1, characterized in that, The unloading assembly also includes an unloading disc (18) and an unloading cylinder (19). The fixed section of the unloading cylinder (19) is fixedly installed on the outer shell (1). The telescopic section of the unloading cylinder (19) is vertically downward. The unloading disc (18) is rotatably installed on the telescopic section of the unloading cylinder (19). The upper end of the unloading rod (9) is fixedly connected to the unloading disc (18). After the lower part of the unloading rod (9) extends into the mold shell (6), the unloading disc (18) rotates with the mold disc (5).

8. The puffing device for processing puffed food according to claim 1, characterized in that, It also includes a positioning component, which includes an outer positioning rail (20) and an inner positioning rail (21). The outer positioning rail (20) and the inner positioning rail (21) are both fixedly connected to the outer shell (1). The outer positioning rail (20) is arranged along the inner circumference of the outer shell (1). The inner positioning rail (21) is coaxially arranged with the outer positioning rail (20). The inner and outer sides of the bottom surface of the chassis (4) are respectively slidably attached to the inner positioning rail (21) and the outer positioning rail (20). The outer positioning rail (20) and the inner positioning rail (21) are at the same height in the section of the expansion station. The height of the outer positioning rail (20) and the inner positioning rail (21) in the section of the unloading station is lower than the height of the section of the expansion station. The section of the outer positioning rail (20) and the inner positioning rail (21) in the unloading station are smoothly inclined to each other with respect to the section of the expansion station. The positioning component also includes a partition (22), which is horizontally fixed to the unloading station of the outer shell (1). The lower surface of the mold plate (5) located at the bottom slides against the upper surface of the partition (22), and an unloading hole is provided in the middle of the partition (22).

9. The puffing device for processing puffed food according to claim 8, characterized in that, The longitudinal section of the chassis (4) is an isosceles trapezoid with a larger upper section and a smaller lower section. The outer positioning rail (20) and the inner positioning rail (21) are respectively set on the circumferential inclined surface of the chassis (4).

10. A method for processing puffed food, characterized in that, Includes the following steps: S1. In a single injection, when a mold assembly rotates to the injection station of the adjacent unloading station, the injection pipe (10) presses against the upper surface of the bottom mold plate (5), and at the same time, the lifting platform (15) on the injection pipe (10) causes all the mold plates (5) above the mold plate (5) to move upward. The end of the injection pipe (10) extends between the two mold plates (5), and the base plate (4) and the mold plate (5) are rotated. The injection pipe (10) injects material into the mold shell (6) on the bottom mold plate (5) in sequence. S2, Subsequent injection: When the mold assembly rotates to the subsequent injection station, the injection tube (10) presses against the upper surface of the mold plate (5) adjacent to the already injected mold plate (5), and at the same time, the lifting platform (15) on the injection tube (10) causes all the mold plates (5) above the mold plate (5) to move upward. The end of the injection tube (10) extends between the two mold plates (5), and the base plate (4) and the mold plate (5) are rotated. The injection tube (10) injects material into the mold shell (6) on the mold plate (5) below the injection tube (10) in sequence. S3, Sealed Expansion: When the mold assembly rotates to the expansion position, the lower end of the expansion cylinder (7) presses against the uppermost mold shell (6), so that the expansion cylinder (7) is in a sealed state. The piston plate (8) moves down to increase the pressure inside the expansion cylinder (7), so that the material inside the mold shell (6) is expanded under pressure. After the expansion is completed, the expansion cylinder (7) and the piston plate (8) return to the initial state. S4. Unloading: When the mold assembly rotates to the unloading station, all mold plates (5) maintain a fixed height position, the base plate (4) descends, the unloading rod (9) descends and enters the mold shell (6), and the expanded material is pressed out of the mold shell (6) and the unloading rod (9) returns to the initial state.

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