An automated feeding mechanism for food processing and production

Abstract

This invention relates to the field of filling mechanism technology, specifically an automated filling mechanism for food processing. It includes a machine base with a conveying mechanism, and a swing bracket with two multi-link swing mechanisms installed between it and the machine base. At least one filling mechanism is mounted on the swing bracket. Each filling mechanism includes a carrier frame, a filling cylinder, a moving frame, a vibration frame, and a rotary frame rotatably mounted on the filling cylinder. The carrier frame is engaged with the swing bracket. A rotary motor is fixedly mounted on the carrier frame, and a first synchronous belt is mounted on the output shaft of the rotary motor. The first synchronous belt is drively connected to the rotary frame. The filling cylinder is fixedly mounted on the carrier frame and contains a stirring shaft. A composite drive unit is mounted at the end of the stirring shaft. The composite drive unit is configured to drive the stirring shaft to reciprocate along the axial direction of the filling cylinder in two different strokes and to drive the stirring shaft to rotate. The beneficial effects of this invention are: effectively improving the roundness and uniformity of the filling on the surface of the dough, and reducing filling overflow during subsequent pressing.

Description

Technical Field

[0001] This invention relates to the field of filling mechanism technology, specifically to an automated filling mechanism for food processing and production. Background Technology

[0002] Sandwich cookies are foods made by filling two cookies with fillings such as cream, jam, or chocolate sauce. In industrial production, the injection of fillings is one of the key processes that determines product quality. Currently, the filling process for sandwich cookies is widely automated. Various cookie filling injection devices already exist in the technology. For example, the utility model patent with authorization announcement number CN222366953U discloses a cookie filling injection machine. This machine uses a slip ring and an isolation ring to form a frustum-shaped semi-enclosed space outside the injection tube. An electric push rod controls the slip ring to slide up and down. Before injection, the isolation ring is fitted to the upper side of the cookie to form a closed space. Then, the filling material is injected through the injection tube, filling and shaping it within the closed space. This process shapes the filling material on the cookie into a frustum shape, maintaining a uniform and stable attachment form. This solution mainly aims to solve the problem of irregular shapes of the filling material on the cookie after injection. However, the above-mentioned existing technology and other injection devices in this field still have the following technical problems: In existing technologies, the fillings already have problems of uneven texture and layering and settling before injection. Existing equipment lacks the ability to actively control the state of the fillings themselves, making it difficult to ensure the consistency of the fillings. Existing technologies only focus on the shaping problem after the fillings are injected, but ignore the unevenness of the fillings that have already occurred during the conveying process in the feeding cylinder. Moreover, during the injection process, the fillings are mostly attached to the surface of the biscuit blank in a static stacking manner, lacking active intervention in the fillings forming process. The sandwich layer is prone to problems such as uneven thickness and eccentricity. After the fillings are injected, they need to rely on the subsequent pressing process to spread naturally, making it difficult to ensure the consistency of each sandwich biscuit. Based on this, the present invention provides an automated feeding mechanism for food processing to solve the problems mentioned in the background art. Summary of the Invention

[0003] This invention addresses the technical problems existing in the prior art by providing an automated filling mechanism for food processing and production. This solves the problems of existing equipment lacking the ability to actively control the state of the filling itself, resulting in difficulty in ensuring filling consistency, and the insufficient filling and forming accuracy of existing equipment, making it difficult to accurately control the thickness and uniformity of the sandwich layer.

[0004] The technical solution of the present invention to solve the above-mentioned technical problems is as follows: An automated feeding mechanism for food processing production includes a machine base on which a conveying mechanism is provided, and further includes: The swing bracket has two multi-link swing mechanisms installed between it and the machine base, and at least one injection mechanism is installed on the swing bracket; The filling mechanism includes a carrier frame, a filling cylinder, a moving frame, a vibration frame, and a rotary frame rotatably mounted on the filling cylinder. The carrier frame is snapped into a swing bracket, and a rotary motor is fixedly mounted on the carrier frame. A first synchronous belt is mounted on the output shaft of the rotary motor, and the first synchronous belt is connected to the rotary frame for transmission. The filling cylinder is fixedly mounted on the carrier frame, and an agitator shaft is provided inside the filling cylinder. A composite drive unit is installed at the end of the agitator shaft. The composite drive unit is configured to drive the agitator shaft to reciprocate along the axial direction of the filling cylinder in two different strokes and to drive the agitator shaft to rotate. An array of agitator teeth is installed on the agitator shaft, and filling valve holes are arrayed at the bottom of the filling cylinder. The filling cylinder rotates at positions corresponding to the outer side of each filling valve hole. A valve cylinder is fitted with a rotor pump, a CCD camera, and an air-blowing nozzle. The outlet port of the rotor pump is connected to a discharge pipe. Each discharge pipe is fitted with a forming mold cylinder. Each forming mold cylinder is rotatably connected to a moving frame via a bearing. A follower pressure ring is rotatably installed at the bottom of each forming mold cylinder. A second motor and two linear transmission modules are mounted on the carrier frame. Both linear transmission modules are connected to the moving frame. Each forming mold cylinder is driven by the second motor. Two elastic connectors are installed between the moving frame and the vibration frame. Multiple excitation motors are installed on the vibration frame. An air pumping unit that supplies air to the air-blowing nozzle is provided on the carrier frame.

[0005] Based on the above technical solution, the present invention can be further improved as follows.

[0006] Optionally, the multi-link swing mechanism includes two swing arms hinged to the machine base, the two swing arms are arranged in parallel, both swing arms are hinged to the swing bracket, a first motor is fixedly mounted on the machine base, an active arm is fixedly mounted on the output shaft end of the first motor, a connecting arm is hinged to the active arm, and the connecting arm is hinged to the swing bracket.

[0007] Optionally, an electric heating wire is integrated inside the fabric cylinder, and a flange connecting pipe is connected to the end of the fabric cylinder. A flexible sealing pressure ring is fixedly installed on the bottom surface of each follower pressure ring, and a scraper ring is fixedly installed at the bottom end of the discharge pipe. The cross-section of the scraper ring is V-shaped, and a sealing retainer ring is fixedly installed on the outer wall of the scraper ring. The outer wall of the sealing retainer ring is sealed and fitted to the forming mold cylinder.

[0008] Optionally, the injection mechanism further includes a gear cylinder rotatably mounted on a rotating frame, a second synchronous belt drivingly connected to the output shaft of the second motor, the second synchronous belt drivingly connected to the gear cylinder, a drive shaft rotatably mounted on the carrier, and a linkage bevel gear fixedly mounted on both the drive shaft and the gear cylinder, the two linkage bevel gears meshing orthogonally, a sleeve shaft rotatably mounted on the vibration frame, the sleeve shaft drivingly connected to the drive shaft, a third synchronous belt drivingly mounted on the sleeve shaft, and each molding die cylinder drivingly connected to the third synchronous belt.

[0009] Optionally, the sleeve shaft has a synchronous shaft hole with openings at both ends and slidably connected to the drive shaft. The cross-sections of the synchronous shaft hole and the drive shaft are both regular hexagonal.

[0010] Optionally, the elastic connector includes a limiting guide rod fixed on the movable frame, the limiting guide rod being slidably connected to the frequency vibration frame, and a limiting spring being sleeved on the limiting guide rod at a position corresponding to both sides of the frequency vibration frame.

[0011] Optionally, the composite drive unit includes a hollow shaft and a wheel rotatably mounted on a carrier. Synchronous bevel gears are fixedly mounted on both the hollow shaft and the wheel, and the two synchronous bevel gears mesh orthogonally. A sliding frame is slidably mounted on the carrier, and a return spring is installed between the sliding frame and the carrier. Along the circumferential direction, two reciprocating protrusions with different radial heights are mounted on the wheel. A roller is rotatably mounted on the sliding frame. When the wheel rotates, the two reciprocating protrusions alternately push the roller. A central shaft hole is provided on the hollow shaft, and a central transmission section is provided at the end of the agitator shaft. The central transmission section is slidably connected to the central shaft hole. The cross-sections of both the central transmission section and the central shaft hole are regular polygons. A fourth synchronous belt is driven and mounted on the output shaft of the second motor, and the fourth synchronous belt is driven and connected to the hollow shaft.

[0012] Optionally, the air pumping unit includes a rotary air distribution ring fixed on a rotary frame, an air pumping chamber is provided inside the rotary air distribution ring, an air inlet ring is rotatably sleeved on the air pumping chamber, an air guide pipe is connected to the air inlet ring and the air guide pipe is connected to the air pumping chamber, the air guide pipe is fixedly connected to the carrier frame, an air supply pipe is connected to the air pumping chamber, and multiple air blowing nozzles are connected in series through the air supply pipe.

[0013] Optionally, the conveying mechanism includes an annular conveyor belt, two drive rollers are rotatably mounted on the machine base, both drive rollers are connected to the annular conveyor belt, a drive motor is mounted on the side of the machine base, and the output shaft end of the drive motor is fixedly connected to one of the drive rollers.

[0014] Optionally, a central control unit is fixedly mounted on the machine base, and each of the air-blowing nozzles is equipped with an electromagnetic valve. The electronic control terminal of the electromagnetic valve, the data terminal of the CCD camera, and the electronic control terminal of the rotor pump are all connected to the central control unit for data transmission. The beneficial effects of this invention are: 1. This invention uses a composite drive unit to drive the stirring shaft to rotate and perform double-stroke axial reciprocating motion within the feeding cylinder, achieving active mechanical intervention in the entire filling conveying process. The double-stroke design can apply differentiated stirring and pushing intensity according to the flowability of the filling in different sections of the feeding cylinder, effectively improving the problems of filling stratification, sedimentation, and uneven texture, ensuring consistent output from each injection point from the source. At the same time, the rotor pump, CCD camera, and air-blowing nozzles integrated on the valve cylinder switch between different workstations with the rotating frame, allowing visual inspection, surface cleaning, and filling molding to be completed sequentially on the same component. After the CCD camera identifies the surface state of the dough, the central control unit differentiates and adjusts the airflow parameters of each air-blowing nozzle based on the detection results, achieving on-demand cleaning and reducing the impact of ineffective air blowing on filling drying. This integrated rotation structure realizes the connection of multiple processes of inspection, cleaning, and filling within a limited space, avoiding the repetitive setting of multiple independent workstations and improving the compactness of the overall equipment layout.

[0015] 2. In the injection process of this invention, the forming mold cylinder rotates synchronously under the drive of the second motor, and forms a closed forming cavity with the surface of the cake blank in conjunction with the follow-up pressure ring. The filling is filled by spin coating under the constraint of rotation, which effectively improves the roundness and uniformity of the filling on the surface of the cake blank and reduces the overflow of filling during subsequent pressing. The high-frequency vibration generated by the excitation motor on the vibration frame is transmitted to the forming mold cylinder through the elastic connector. At the same time as the filling is injected, a micro-vibration effect is applied to the filling, which promotes the discharge of air bubbles inside the filling and improves the density and thickness consistency of the sandwich layer. Moreover, the limiting guide rod and the double-sided limiting spring in the elastic connector constrain the vibration amplitude within the set range, which not only transmits the excitation force but also buffers the rigid impact, avoiding the adverse effect of vibration on the positioning accuracy of the injection. During the reset process, the V-shaped scraper ring remains stationary with the discharge pipe and removes the filling adhering to the inner wall of the forming mold cylinder, ensuring the cleanliness of the inner wall during the next operation, so that the injection molding accuracy remains stable in continuous operation. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of an automated feeding mechanism for food processing production according to the present invention; Figure 2 This is a schematic diagram of the structure of the annular conveyor belt and connecting arm of the present invention; Figure 3 This is a schematic diagram of the structure of the carrier and the air-blowing nozzle of the present invention; Figure 4 For the present invention Figure 3 A schematic diagram of the cross-sectional structure; Figure 5 For the present invention Figure 4 A magnified schematic diagram of the local structure at point A; Figure 6 For the present invention Figure 4 A magnified schematic diagram of the local structure at point B; Figure 7 This is a schematic diagram of the CCD camera and the rotation motor of the present invention; Figure 8 For the present invention Figure 7 A magnified schematic diagram of the structure at point C in the middle; Figure 9 This is a schematic diagram of the air guide tube and rotary air distribution ring of the present invention; Figure 10 This is a schematic diagram of the sliding frame of the present invention.

[0017] The attached diagram lists the components represented by each number as follows: 1. Machine base; 2. Swinging support; 3. Carrier frame; 101. Circular conveyor belt; 102. Drive motor; 201. Swing arm; 202. First motor; 203. Drive arm; 204. Connecting arm; 301. Material cylinder; 302. Moving frame; 303. Vibration frame; 304. Rotary frame; 305. Indexing motor; 306. Agitator shaft; 307. Agitator teeth; 308. Injection valve orifice; 309. Valve cylinder; 310. Rotary pump; 311. CCD camera; 312. Air blowing nozzle; 313. Discharge pipe; 314. 315. Molding cylinder; 316. Follow-up pressure ring; 317. Second motor; 318. Linear transmission module; 319. Vibration motor; 320. Flange connecting pipe; 321. Scraper ring; 322. Gear cylinder; 323. Air guide pipe; 324. Drive shaft; 325. Sleeve shaft; 326. Limiting guide rod; 327. Limiting spring; 328. Hollow shaft; 329. Round wheel; 330. Return spring; 331. Sliding frame; 332. Reciprocating protrusion; 333. Roller; 334. Rotary air distribution ring; 335. Inlet ring. Detailed Implementation

[0018] The principles and features of the present invention are described below with reference to the accompanying drawings. The examples given are only for explaining the present invention and are not intended to limit the scope of the present invention.

[0019] The present invention provides the following preferred embodiments. like Figure 1-10 As shown, an automated feeding mechanism for food processing includes a machine base 1 with a conveying mechanism on it. The conveying mechanism includes an annular conveyor belt 101. Two drive rollers are rotatably mounted on the machine base 1, and both drive rollers are connected to the annular conveyor belt 101. A drive motor 102 is mounted on the side of the machine base 1, and the output shaft end of the drive motor 102 is fixedly connected to one of the drive rollers. During operation, the circular conveyor belt 101 is used for continuous conveying of single-layer cake blanks, and during conveying, the single-layer cake blanks are regularly arranged on the circular conveyor belt 101; Also includes: The swing bracket 2 has two multi-link swing mechanisms installed between it and the machine base 1, and two injection mechanisms are installed on the swing bracket 2. The multi-link swing mechanism includes two swing arms 201 hinged on the machine base 1. The two swing arms 201 are arranged in parallel. Both swing arms 201 are hinged to the swing bracket 2. A first motor 202 is fixedly mounted on the machine base 1. An active arm 203 is fixedly mounted on the output shaft end of the first motor 202. A connecting arm 204 is hinged to the active arm 203. The connecting arm 204 is hinged to the swing bracket 2. During operation, the first motor 202 drives the active arm 203 to rotate at a constant speed, and pulls the swing bracket 2 through the connecting arm 204. Under the limiting constraints of the two parallel swing arms 201, it performs translational reciprocating swing along the parallelogram trajectory. The swing bracket 2 moves synchronously with the conveyor cycle. The pre-processing of the biscuit blank is completed at the feeding side station first. After swinging to the discharge side station with the swing bracket 2, the filling process is completed. A single operation covers two rows of biscuits. The biscuits that are not operated continue to be conveyed by the conveyor belt for use in the subsequent assembly process. The use of a parallelogram-shaped multi-link structure allows the swing bracket 2 to maintain a stable posture during the swing process, resulting in higher relative positional accuracy between the injection and pretreatment stations. By integrating the pretreatment and injection processes on different swing positions of the same swing bracket 2, multiple processes can be completed simultaneously on a continuous conveying production line without the need to set up multiple independent workstations, thus reducing the overall footprint of the equipment. The column-interval operation method can match the production rhythm of subsequent sandwich assembly and adapt to the processing rhythm of continuous production lines; The material injection mechanism includes a carrier frame 3, a material cylinder 301, a moving frame 302, a vibration frame 303, and a rotary frame 304 rotatably sleeved on the material cylinder 301. The carrier frame 3 is snapped into the swing bracket 2. A rotary motor 305 is fixedly mounted on the carrier frame 3. A first synchronous belt is mounted on the output shaft of the rotary motor 305. The first synchronous belt is connected to the rotary frame 304 in a transmission. The fabric cylinder 301 is fixedly mounted on the carrier 3 and is arranged parallel to the transmission roller. The fabric cylinder 301 is made of 304 stainless steel. An electric heating wire is integrated inside the fabric cylinder 301. The end of the fabric cylinder 301 is connected to a flange connecting pipe 319. The flange connecting pipe 319 is connected to the filling feeding device, thereby realizing the continuous feeding of the filling. The fabric cylinder 301 is provided with a stirring shaft 306, and a composite drive unit is installed at its end. The composite drive unit is configured to drive the stirring shaft 306 to reciprocate along the axial direction of the fabric cylinder 301 with two different strokes and drive the stirring shaft 306 to rotate. The stirring shaft 306 is equipped with an array of stirring teeth 307. The composite drive unit synchronously outputs rotary motion and double-stroke reciprocating motion, driving the stirring shaft 306 to rotate around its own axis and move axially in two different strokes along the axial direction within the cloth cylinder 301. The stirring teeth 307 on the stirring shaft 306 move synchronously with the stirring shaft 306 to perform circumferential stirring and axial pushing of the filling in the cloth cylinder 301; Rotary stirring combined with axial reciprocating pushing can reduce the adhesion and accumulation of filling on the inner wall of the feeding cylinder 301, maintain the uniform texture of the filling, and prevent the filling from separating or settling. The dual-stroke axial reciprocating motion can create different intensities of stirring and pushing effects in different sections of the filling conveying process, adapting to the differences in filling flowability between the injection end and the feed end, and ensuring consistent discharge at each injection point. The bottom array of the fabric cylinder 301 has injection valve holes 308. A valve cylinder 309 is rotatably sleeved on the fabric cylinder 301 at the position corresponding to the outer side of each injection valve hole 308. A rotor pump 310, a CCD camera 311 and an air blowing nozzle 312 are fixed on the valve cylinder 309. Specifically, the inner wall of the valve cylinder 309 is provided with a feed port that communicates with the liquid inlet port of the rotor pump 310. When the valve cylinder 309 rotates to the injection position, the feed port is sealed and connected with the injection valve hole 308, so that the filling in the cloth cylinder 301 is sucked into the rotor pump 310. The rotor pump 310, CCD camera 311 and air-blowing nozzle 312 are spaced at an angle of 120° around the outer periphery of the valve cylinder 309; The feed axis of the rotor pump 310, the monitoring axis of the CCD camera 311, and the axis of the air blowing nozzle 312 are all perpendicular to the axis of the valve cylinder 309. Rotary pump 310 is a miniature cam-type rotary pump; A central control unit is fixedly installed on the machine base 1. Each air blowing nozzle 312 is equipped with an electromagnetic valve. The electrical control terminal of the electromagnetic valve, the data terminal of the CCD camera 311, and the electrical control terminal of the rotor pump 310 are all connected to the central control unit for data transmission. When the rotary frame 304 drives the valve cylinder 309 to rotate to the pre-processing station, the CCD camera collects image data of the blank below and transmits it to the central control unit. After the central control unit identifies the position deviation, appearance defects and surface impurities of the blank, it controls the opening and closing of the electromagnetic valves in each air blowing pipe 312 to output airflow of corresponding intensity to the surface of the blank to remove surface impurities. Visual inspection and air cleaning are integrated into the same valve cylinder 309 component. By switching the work station through rotation, there is no need to set up separate inspection and cleaning work stations, resulting in a higher degree of structural integration. Based on visual detection results, the airflow parameters of each air-blowing nozzle 312 can be individually adjusted to perform differentiated cleaning for different dough pieces, reducing energy consumption and filling drying caused by ineffective air blowing, and improving the accuracy of dough surface cleaning. The outlet port of the rotor pump 310 is connected to the discharge pipe 313. Each discharge pipe 313 is fitted with a forming mold cylinder 314. Each forming mold cylinder 314 is rotatably connected to the moving frame 302 through a bearing. Each forming mold cylinder 314 is rotatably installed with a follower pressure ring 315 at the bottom end. A scraper ring 320 is fixedly installed at the bottom end of the discharge pipe 313. The cross-section of the scraper ring 320 is V-shaped, and a sealing ring is fixedly installed on the outer wall of the scraper ring 320. The outer wall of the sealing ring is sealed and fitted with the forming mold cylinder 314. Each follower pressure ring 315 has a flexible sealing pressure ring fixedly installed on its bottom surface; At the injection station, the moving frame 302 drives the forming mold cylinder 314 to move down, so that the flexible sealing ring at the bottom of the follower pressure ring 315 fits against the upper surface of the blank, forming a closed injection molding cavity. The rotor pump 310 pumps the filling into the forming mold cylinder 314 through the discharge pipe 313. The filling is filled onto the surface of the dough under the constraint of the forming mold cylinder 314. When the forming mold cylinder 314 rotates, the scraper ring 320 remains stationary with the discharge pipe 313, and the follower pressure ring 315 remains relatively stationary with the blank, thus completing the spin coating injection molding. The follow-up pressure ring 315 and the flexible sealing pressure ring can form a limiting cavity during material injection, constraining the forming range and thickness of the filling and reducing the overflow of the filling to the outside of the dough. By using injection molding during rotation, the adhesion rate of the filling on the molding cylinder 314 is reduced and the roundness and distribution uniformity of the filling after it flows out are improved. By improving the roundness, on the one hand, the regularity of the sandwich cookie after molding can be improved, and on the other hand, the overflow rate of the filling can be reduced when the sandwich cookie is pressed. After the filling is completed, the molding cylinder 314 is reset to the initial position. During the reset process, the molding cylinder 314 continues to rotate. The V-shaped scraper ring 320 can remove the filling that is stuck to the inner wall of the molding cylinder 314 and ensure the cleanliness of the inner wall of the molding cylinder 314 before the next operation. The carrier 3 is equipped with a second motor 316 and two linear drive modules 317, both of which are connected to the moving frame 302. The linear transmission module 317 is a lead screw and nut mechanism driven by a servo motor; Each molding cylinder 314 is driven by a second motor 316. Two elastic connectors are installed between the moving frame 302 and the vibration frame 303. Four excitation motors 318 are installed on the vibration frame 303. The material injection mechanism also includes a gear cylinder 321 rotatably mounted on a rotating frame 304. A second synchronous belt is driven to the output shaft of the second motor 316. The second synchronous belt is driven to the gear cylinder 321. A drive shaft 323 is rotatably mounted on the carrier 3. Both the drive shaft 323 and the gear cylinder 321 are fixedly mounted with linkage bevel gears. The two linkage bevel gears mesh orthogonally. The axis of the drive shaft 323 is perpendicular to the axis of the material cylinder 301. A sleeve shaft 324 is rotatably mounted on the vibration frame 303. The sleeve shaft 324 is connected to the drive shaft 323. A third synchronous belt is installed on the sleeve shaft 324. Each forming mold cylinder 314 is connected to the third synchronous belt.

[0020] The sleeve 324 has a synchronous shaft hole with openings at both ends and slidably connected to the drive shaft 323. The cross-sections of the synchronous shaft hole and the drive shaft 323 are both regular hexagonal. The linear transmission module 317 drives the moving frame 302 to lift as a whole, which in turn drives the forming mold cylinder 314 to complete the pressing and lifting actions. The second motor 316 drives the gear cylinder 321 to rotate via the second synchronous belt, and drives the drive shaft 323 to rotate via the linkage bevel gear. The drive shaft 323 drives the sleeve shaft 324 to rotate synchronously via the regular hexagonal synchronous shaft hole, and then drives each forming mold cylinder 314 to rotate synchronously via the third synchronous belt. When the excitation motor 318 is working, it drives the vibration frame 303 to generate high-frequency vibration, and the vibration is transmitted to the forming mold cylinder 314 through the elastic connector. By adopting a regular hexagonal sliding transmission structure, torque transmission can be maintained continuously during the lifting and lowering of the sleeve shaft 324 and the moving frame 302, realizing uninterrupted rotation drive within the lifting stroke and simplifying the composite transmission structure of lifting and rotation. By integrating the excitation component onto the vibration frame 303 and transmitting vibration through the elastic connector, the molding cylinder 314 can be accompanied by high-frequency micro-vibration during the injection process, which promotes the flow and venting of the filling, reduces air bubbles inside the filling layer, and improves the density and uniformity of the sandwich layer. The elastic connector includes a limiting guide rod 325 fixedly mounted on the movable frame 302. The limiting guide rod 325 is slidably connected to the vibration frame 303. Limiting springs 326 are sleeved on the limiting guide rod 325 at positions corresponding to both sides of the vibration frame 303. When the vibration frame 303 vibrates, it reciprocates relative to the moving frame 302 along the limiting guide rod 325. The limiting springs 326 on both sides provide elastic restoring force and buffer constraint to the two movement directions of the vibration frame 303, respectively, limiting the vibration amplitude within the set range. The vibration is transmitted elastically to the moving frame 302 and the forming mold cylinder 314 through the limiting springs 326.

[0021] The limiting guide rod 325 can ensure the stability of the vibration direction of the vibration frequency frame 303 and avoid radial sway. The structure of the double-sided limiting spring 326 can both transmit the excitation force and buffer the rigid impact of the vibration frame 303 on the moving frame 302, thereby reducing the impact of vibration on the accuracy of the injection position. The composite drive unit includes a hollow shaft 327 and a wheel 328 rotatably mounted on a carrier 3. Both the hollow shaft 327 and the wheel 328 are fixedly mounted with synchronous bevel gears, which mesh orthogonally. A sliding frame 330 is slidably mounted on the carrier 3, and a return spring 329 is installed between the sliding frame 330 and the carrier 3. Along the circumferential direction, two reciprocating protrusions 331 with different radial heights are mounted on the wheel 328. A roller 332 is rotatably mounted on the sliding frame 330. When the wheel 328 rotates, the two reciprocating protrusions 331 alternately push the roller 332. A central shaft hole is opened on the hollow shaft 327. A central transmission section is provided at the end of the agitator 306. The central transmission section is slidably connected to the central shaft hole. The cross-sections of the central transmission section and the central shaft hole are both regular polygons. A fourth synchronous belt is driven and mounted on the output shaft of the second motor 316. The fourth synchronous belt is driven and connected to the hollow shaft 327. The second motor 316 drives the hollow shaft 327 to rotate via the fourth synchronous belt, and the hollow shaft 327 drives the stirring shaft 306 to rotate synchronously via the central transmission section; At the same time, the hollow shaft 327 drives the round wheel 328 to rotate through the meshing of the synchronous bevel gear. The two reciprocating protrusions 331 on the round wheel 328 with different radial heights alternately push the roller 332, so that the sliding frame 330 overcomes the force of the return spring 329 to slide axially back and forth, thereby driving the stirring shaft 306 to perform two strokes of axial reciprocating motion. The carrier 3 is equipped with an air pumping unit that supplies air to the air blowing nozzle 312.

[0022] The air pumping unit includes a rotary air distribution ring 333 fixedly mounted on the rotary frame 304. The rotary air distribution ring 333 has an air pumping chamber inside. An air inlet ring 334 is rotatably sleeved on the air pumping chamber. An air guide pipe 322 is connected to the air inlet ring 334 and is connected to the air pumping chamber. The air guide pipe 322 is fixedly connected to the carrier frame 3. An air supply pipe is connected to the air pumping chamber. Multiple air blowing nozzles 312 are connected in series through the air supply pipe.

[0023] An external air source is sent into the intake ring 334 through the air guide pipe 322, and then into the pump chamber of the rotary air distribution ring 333. The rotary air distribution ring 333 rotates synchronously with the rotary frame 304, and the intake ring 334 and the rotary air distribution ring 333 maintain a rotational sealing fit. Compressed air in the pump chamber is distributed to each air-blowing nozzle 312 via the air supply pipe, providing a stable air source for the air-blowing cleaning process.

[0024] The rotary air distribution ring 333 structure can continuously supply air to each air-blowing nozzle 312 during the continuous rotation of the rotary frame 304. There is no need to set up flexible drag chains or redundant rotary pipelines, the pipeline layout is simpler, the air circuit connection is stable when switching rotating positions, and the air circuit supply continuity and sealing are guaranteed during multi-position rotation.

[0025] The specific steps for using this invention are as follows: During the preparation phase, the staff completes the standby reset of each component of the equipment, connects the external feeding equipment to the feeding cylinder 301 through the flange connection pipe 319, connects the external air source to the air guide pipe 322, and arranges the cake blanks to be processed regularly on the circular conveyor belt 101. The central control unit completes the parameter preset and communication self-test of each electrical control component. The rotary frame 304 drives the valve cylinder 309 to the initial working position, and the moving frame 302 and the swing bracket 2 are reset to the standby position. The heating wire in the feeding cylinder 301 is preheated to the set temperature to keep the filling in a suitable flow state. During the working phase, the drive motor 102 drives the drive roller to continuously convey the cake blank through the ring conveyor belt 101. The first motor 202 drives the active arm 203 to rotate at a constant speed. The swing bracket 2 is pulled by the connecting arm 204. Under the limiting constraint of the two parallel swing arms 201, it performs translational reciprocating swing along the parallelogram trajectory. The swing bracket 2 moves synchronously with the conveying rhythm and first moves the feeding mechanism to the pre-treatment station on the feeding side. The indexing motor 305 drives the rotary frame 304 to rotate via the first synchronous belt, which in turn drives the valve cylinder 309 to the detection and cleaning position. The CCD camera 311 collects image data from the blank below and transmits it to the central control unit. After the central control unit identifies the position deviation, appearance, and surface impurities of the blank, it controls the opening and closing of the solenoid valves in each air blowing nozzle 312 accordingly. The air pumping unit delivers compressed air from the external air source to the air blowing nozzle 312 through the air guide pipe 322, the air pumping chamber, and the air supply pipe, and outputs airflow of corresponding intensity to the surface of the blank to clean the surface impurities. Then the swing bracket 2 continues to swing, moving the injection mechanism to the injection station on the discharge side. The rotary frame 304 rotates again, aligning the rotor pump 310 on the valve cylinder 309 with the discharge pipe 313 below the blank. The linear transmission module 317 drives the moving frame 302 to move down, causing the forming mold cylinder 314 to descend, so that the flexible sealing ring at the bottom of the follower pressure ring 315 fits against the upper surface of the blank, forming a closed injection molding cavity. During the filling process, the second motor 316 drives the hollow shaft 327 of the composite drive unit to rotate through the fourth synchronous belt. The hollow shaft 327 drives the stirring shaft 306 to rotate synchronously. At the same time, the hollow shaft 327 drives the wheel 328 to rotate through the meshing of the synchronous bevel gear. Two reciprocating protrusions 331 with different radial heights on the wheel 328 alternately push the roller 332, so that the sliding frame 330 overcomes the force of the return spring 329 to slide axially back and forth, thereby driving the stirring shaft 306 to perform two different strokes of axial reciprocating motion. The stirring teeth 307 on the stirring shaft 306 move synchronously with the stirring shaft 306 to perform circumferential stirring and axial pushing of the filling in the feeding cylinder 301, maintaining the uniform texture of the filling. The rotor pump 310 starts synchronously and pumps the filling in the feeding cylinder 301 into the forming mold cylinder 314 through the filling valve hole 308 and the discharge pipe 313. The filling is filled to the surface of the cake blank under the constraint of the forming mold cylinder 314. Meanwhile, the second motor 316 drives the gear cylinder 321 to rotate via the second synchronous belt, and drives the drive shaft 323 to rotate via the linkage bevel gear. The drive shaft 323 drives the sleeve shaft 324 to rotate synchronously via the regular hexagonal synchronous shaft hole, and then drives each molding cylinder 314 to rotate synchronously via the third synchronous belt, realizing spin coating injection molding. The excitation motor 318 drives the vibration frequency frame 303 to generate high-frequency vibration. The vibration is transmitted to the molding cylinder 314 through the elastic connector, promoting the flow and exhaust of the filling. The limiting guide rod 325 of the elastic connector and the double-sided limiting spring 326 constrain the vibration amplitude and buffer the influence of vibration on the injection position accuracy. After the filling is completed, the rotor pump 310 stops feeding. The linear transmission module 317 drives the moving frame 302 and the forming mold cylinder 314 to lift and reset. During the reset process, the forming mold cylinder 314 continues to rotate. The V-shaped scraper ring 320 at the bottom of the discharge pipe 313 removes the filling that is stuck to the inner wall of the forming mold cylinder 314, ensuring that the inner wall of the forming mold cylinder 314 is clean. The swing bracket 2 swings back to the initial position with the multi-link swing mechanism. The ring conveyor belt 101 continues to transport the next batch of cake blanks and enters the next work cycle. A single operation can cover two rows of cake blanks. Unprocessed cake blanks continue to be transported by the conveyor belt for use in subsequent processes.

[0026] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. 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. An automated feeding mechanism for food processing, comprising a machine base on which a conveying mechanism is mounted, characterized in that, Also includes: The swing bracket has two multi-link swing mechanisms installed between it and the machine base, and at least one injection mechanism is installed on the swing bracket; The material injection mechanism includes a carrier frame, a material cylinder, a moving frame, a vibration frame, and a rotary frame rotatably mounted on the material cylinder. The carrier frame is snapped into a swing bracket. A rotary motor is fixedly mounted on the carrier frame, and a first synchronous belt is mounted on the output shaft of the rotary motor. The first synchronous belt is connected to the rotary frame for transmission. The material cylinder is fixedly mounted on the carrier frame and contains a stirring shaft. A composite drive unit is mounted at the end of the stirring shaft. The composite drive unit is configured to drive the stirring shaft to reciprocate along the axial direction of the material cylinder in two different strokes and to drive the stirring shaft to rotate. An array of stirring teeth is mounted on the stirring shaft. The bottom of the material cylinder has an array of injection valve holes. The material cylinder has injection valve holes located on the outer side of each injection valve hole. Each component is rotatably fitted with a valve cylinder, on which a rotor pump, a CCD camera, and an air-blowing nozzle are fixedly mounted. The outlet port of the rotor pump is connected to a discharge pipe, and each discharge pipe is fitted with a forming mold cylinder. Each forming mold cylinder is rotatably connected to the moving frame via a bearing. A follower pressure ring is rotatably installed at the bottom of each forming mold cylinder. A second motor and two linear drive modules are mounted on the carrier frame, and both linear drive modules are connected to the moving frame. Each forming mold cylinder is driven by the second motor. Two elastic connectors are installed between the moving frame and the vibration frame. Multiple excitation motors are installed on the vibration frame. An air pumping unit that supplies air to the air-blowing nozzle is provided on the carrier frame.

2. The automated feeding mechanism for food processing and production according to claim 1, characterized in that, The multi-link swing mechanism includes two swing arms hinged to the machine base. The two swing arms are arranged in parallel and both swing arms are hinged to the swing bracket. A first motor is fixedly mounted on the machine base. An active arm is fixedly mounted on the output shaft end of the first motor. A connecting arm is hinged to the active arm and the connecting arm is hinged to the swing bracket.

3. The automated feeding mechanism for food processing and production according to claim 1, characterized in that, The fabric cylinder is equipped with an integrated heating wire. The end of the fabric cylinder is connected to a flange connecting pipe. A flexible sealing pressure ring is fixedly installed on the bottom surface of each follower pressure ring. A scraper ring is fixedly installed at the bottom end of the discharge pipe. The cross-section of the scraper ring is V-shaped, and a sealing retainer ring is fixedly installed on the outer wall of the scraper ring. The outer wall of the sealing retainer ring is sealed and fitted to the forming mold cylinder.

4. The automated feeding mechanism for food processing production according to claim 1, characterized in that, The injection mechanism further includes a gear cylinder rotatably mounted on a rotating frame. A second synchronous belt is driven to the output shaft of the second motor. The second synchronous belt is driven to the gear cylinder. A drive shaft is rotatably mounted on the carrier. Linkage bevel gears are fixedly mounted on both the drive shaft and the gear cylinder. The two linkage bevel gears mesh orthogonally. A sleeve shaft is rotatably mounted on the vibration frame. The sleeve shaft is driven to the drive shaft. A third synchronous belt is driven to the sleeve shaft. Each molding die cylinder is driven to the third synchronous belt.

5. The automated feeding mechanism for food processing production according to claim 4, characterized in that, The sleeve shaft has a synchronous shaft hole with openings at both ends and slidably connected to the drive shaft. Both the synchronous shaft hole and the drive shaft have a regular hexagonal cross-section.

6. The automated feeding mechanism for food processing and production according to claim 1, characterized in that, The elastic connector includes a limiting guide rod fixed on the movable frame. The limiting guide rod is slidably connected to the frequency frame. A limiting spring is sleeved on the limiting guide rod at a position corresponding to both sides of the frequency frame.

7. The automated feeding mechanism for food processing and production according to claim 1, characterized in that, The composite drive unit includes a hollow shaft and a wheel rotatably mounted on a carrier. Synchronous bevel gears are fixedly mounted on both the hollow shaft and the wheel, and the two synchronous bevel gears mesh orthogonally. A sliding frame is slidably mounted on the carrier, and a return spring is installed between the sliding frame and the carrier. Along the circumferential direction, two reciprocating protrusions with different radial heights are mounted on the wheel. A roller is rotatably mounted on the sliding frame. When the wheel rotates, the two reciprocating protrusions alternately push the roller. A central shaft hole is provided on the hollow shaft, and a central transmission section is provided at the end of the agitator shaft. The central transmission section is slidably connected to the central shaft hole. The cross-sections of both the central transmission section and the central shaft hole are regular polygons. A fourth synchronous belt is driven and mounted on the output shaft of the second motor, and the fourth synchronous belt is driven and connected to the hollow shaft.

8. The automated feeding mechanism for food processing and production according to claim 1, characterized in that, The air pumping unit includes a rotary air distribution ring fixed on a rotary frame. The rotary air distribution ring has an air pumping chamber inside. An air inlet ring is rotatably sleeved on the air pumping chamber. An air guide pipe is connected to the air inlet ring and is connected to the air pumping chamber. The air guide pipe is fixedly connected to the carrier frame. An air supply pipe is connected to the air pumping chamber. Multiple air blowing nozzles are connected in series through the air supply pipe.

9. An automated feeding mechanism for food processing and production according to claim 1, characterized in that, The conveying mechanism includes an annular conveyor belt. Two drive rollers are rotatably mounted on the machine base, and both drive rollers are connected to the annular conveyor belt. A drive motor is mounted on the side of the machine base, and the output shaft of the drive motor is fixedly connected to one of the drive rollers.

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