Automatic feeding and packaging device for food bag processing

Abstract

The utility model relates to food bag processing technical field especially, relate to a kind of automatic feeding packaging device for food bag processing, including conveying frame, adjusting structure is provided on the conveying frame, packaging structure is equipped on the conveying frame;The automatic feeding packaging device for food bag processing is accurately controlled by the adjusting structure, electric push rod driven connecting rod overturning mechanism, the start-stop position of cleaning roller can be controlled, the quick switching of non-contact state is realized, effectively reduce the invalid wear when equipment standby;Synchronous transmission system driven by motor can be started in advance before cleaning roller contacts conveying frame, forms initiative cleaning mode, significantly improves the removal efficiency of residual material;The entire adjusting process is realized by mechatronic control, while ensuring that cleaning roller and conveying belt are stably pressed, the problem of excessive starting impact caused by traditional fixed installation is avoided.

Description

Technical Field

[0001] This utility model relates to the field of food bag processing technology, and in particular to an automatic feeding and packaging device for food bag processing. Background Technology

[0002] With the rapid development of the national economy, people are using packaging bags more and more widely in their daily lives. The structure and shape of packaging bags are becoming increasingly diverse. Currently, all kinds of plastic packaging bags are used in people's daily lives. During the processing of plastic packaging bags, the sealing effect directly affects the performance of the plastic packaging bags.

[0003] A heat-sealing device for processing plastic food bags, with publication number CN221138982U, is disclosed. Specifically, it includes two support frames rotatably connected to each other. A conveying assembly is mounted on each support frame, along with a guiding assembly and a heat-sealing assembly. The guiding assembly includes a support plate fixedly connected to the support frame, with two fixed rods fixedly connected to the support plate. A guide box is fixedly connected to each fixed rod, and multiple guide wheels are rotatably mounted inside the guide box. This invention, by bringing the packaging bag close to the guide box, causes the guide wheels inside the two guide boxes to move the packaging bag in a limited position. This, in turn, causes the conveyor belt to move the packaging bag along the guide wheels, further limiting the movement of the food bag and preventing misalignment during heat sealing due to bag displacement. This prevents issues such as insufficient sealing and air leakage after heat sealing.

[0004] The aforementioned patent also has the following problems: the cleaning roller is always in close contact with the conveyor belt surface during installation, creating continuous contact pressure. Although this design helps remove residue, during the equipment startup phase, the drive motor must instantaneously overcome the entire system load, including the frictional resistance of the cleaning roller, resulting in additional starting burden. This constant mechanical resistance not only increases the instantaneous impact on the transmission system but may also cause an increase in the motor's starting current, which will affect the service life of the power components in the long run. Utility Model Content

[0005] The purpose of this invention is to provide an automatic feeding and packaging device for food bag processing, addressing the problem mentioned in the background section where existing cleaning rollers are always in close contact with the conveyor belt surface during installation, creating continuous contact pressure. While this design helps remove residue, during equipment startup, the drive motor must instantaneously overcome the entire system load, including the frictional resistance of the cleaning rollers, resulting in additional starting burden. This constant mechanical resistance not only increases the instantaneous impact on the transmission system but may also cause an increase in the motor's starting current, potentially affecting the service life of the power components over long-term operation.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an automatic feeding and packaging device for food bag processing, including a conveyor frame, an adjustment structure on the conveyor frame, and a packaging structure on the conveyor frame;

[0007] The adjustment structure includes a fixed frame mounted on the conveyor frame, a tilting frame movably mounted on the fixed frame, a guide rail mounted on the fixed frame, a sliding block mounted on the guide rail, an electric push rod mounted on the fixed frame with its driving end connected to the sliding block, a connecting rod movably mounted on the sliding block with its connecting rod movably connected to the tilting frame, a rotating shaft mounted on the tilting frame, a cleaning roller mounted on the rotating shaft, a first pulley mounted on the rotating shaft, a first motor mounted on the tilting frame, a second pulley mounted on the driving end of the first motor, and a transmission belt mounted on both the first and second pulleys.

[0008] Preferably, the guide rail is adapted to the sliding block, and the first motor is fixed to the tilting frame by bolts.

[0009] Preferably, the conveyor frame is provided with support legs, and the fixing frame is provided with reinforcing ribs.

[0010] Preferably, the packaging structure includes a support frame mounted on the conveyor frame. The support frame has a cylinder, and the cylinder's drive end has a movable frame. The support frame has a sliding groove, and the movable frame has a pulley that abuts against the sliding groove. The movable frame has a working box, and the working box has a rotating shaft. The rotating shaft has a transmission gear, and the working box has a second motor whose drive end is connected to the rotating shaft. The working box contains a guide frame, and the guide frame has a sliding frame. The sliding frame has a heat-sealing knife, and the sliding frame has a transmission rack that meshes with the transmission gear.

[0011] Preferably, the rotating shaft is adapted to the working box, and the support frame is provided with reinforcing ribs.

[0012] Preferably, the slide is adapted to the pulley, and the second motor is fixed to the working box by bolts.

[0013] Preferably, the cylinder is fixed to the support frame by bolts, and the guide frame is adapted to the sliding frame.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] 1. This automatic feeding and packaging device for food bag processing, through its adjustable structure and electric push rod driven linkage flipping mechanism, can precisely control the start and stop position of the cleaning roller, achieving rapid switching between non-contact states and effectively reducing ineffective wear during equipment standby. The motor-driven synchronous transmission system can pre-start the rotation of the cleaning roller before it contacts the conveyor frame, forming an active cleaning mode and significantly improving the efficiency of residue removal. The entire adjustment process is achieved through mechatronics control, ensuring stable pressing between the cleaning roller and the conveyor belt while avoiding the excessive starting impact problem caused by traditional fixed installations. This optimizes the load characteristics of the transmission system and ensures the uniformity and thoroughness of the cleaning operation, thereby extending the equipment's service life while maintaining continuous and efficient cleaning performance.

[0016] 2. This automatic feeding and packaging device for food bag processing, through its packaging structure, cylinder-driven moving frame, and pulley and chute guiding mechanism, achieves stable displacement and precise positioning of the heat-sealing components, ensuring that the equipment can quickly adapt to the heat-sealing height requirements of different specifications of food bags. It employs a gear and rack synchronous transmission mechanism, with a single motor driving a pair of symmetrically arranged sliding frames to move in opposite directions, effectively ensuring the synchronicity and parallelism of the heat-sealing blades on both sides during the closing process, fundamentally avoiding incomplete sealing or deformation problems caused by uneven sealing pressure. The entire process integrates conveying, positioning, and heat-sealing execution, achieving rapid and stable sealing of thin plastic food bags in continuous operation, ensuring both the sealing strength and appearance consistency of the sealing line, and significantly improving packaging efficiency and finished product qualification rate. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the structure of this utility model from another perspective;

[0019] Figure 3 This is a schematic diagram of the structure of the movable frame and pulleys of this utility model;

[0020] Figure 4 This is a schematic diagram of the internal structure of the working box of this utility model;

[0021] In the diagram: 1. Conveyor frame; 2. Adjustment structure; 201. Fixed frame; 202. Tilting frame; 203. Guide rail; 204. Sliding block; 205. Electric push rod; 206. Connecting rod; 207. Rotating shaft; 208. Cleaning roller; 209. First pulley; 210. First motor; 211. Second pulley; 212. Transmission belt; 3. Packaging structure; 301. Cylinder; 302. Moving frame; 303. Pulley; 304. Slide; 305. Working box; 306. Rotating shaft; 307. Transmission gear; 308. Second motor; 309. Guide frame; 310. Sliding frame; 311. Heat sealing knife; 312. Transmission rack; 313. Support frame. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0023] Please see Figure 1-4 This utility model provides a technical solution: an automatic feeding and packaging device for food bag processing, including a conveyor frame 1, an adjustment structure 2 on the conveyor frame 1, and a packaging structure 3 on the conveyor frame 1;

[0024] The adjusting structure 2 includes a fixed frame 201, which is mounted on the conveyor frame 1. A tilting frame 202 is movably mounted on the fixed frame 201. A guide rail 203 is mounted on the fixed frame 201, and a sliding block 204 is mounted on the guide rail 203. An electric push rod 205 is mounted on the fixed frame 201, and the driving end of the electric push rod 205 is connected to the sliding block 204. A connecting rod 206 is movably mounted on the sliding block 204 and is movably connected to the tilting frame 202. A rotating shaft 207 is mounted on the rotating shaft 207, and a cleaning roller 208 is mounted on the rotating shaft 207. A first pulley 209 is mounted on the rotating shaft 207. A first motor 210 is mounted on the tilting frame 202, and a second pulley 211 is mounted on the driving end of the first motor 210. The first pulley 209 and the second... The pulley 211 is equipped with a transmission belt 212. The guide rail 203, sliding block 204, electric push rod 205 and connecting rod 206 are all provided in pairs and symmetrically arranged. When the position of the cleaning roller 208 needs to be adjusted for cleaning, the first motor 210 is driven during cleaning. The first motor 210 can drive the second pulley 211 to rotate. Under the action of the second pulley 211, the transmission belt 212 drives the first pulley 209 to rotate. The first pulley 209 can drive the rotating shaft 207 to rotate. The rotating shaft 207 can drive the cleaning roller 208 to rotate, which drives the electric push rod 205. The electric push rod 205 can drive the sliding block 204 to move on the guide rail 203. The guide rail 203 can drive the connecting rod 206 to rotate. The connecting rod 206 can drive the tilting frame 202 to rotate on the fixed frame 201. The tilting frame 202 can drive the rotating cleaning roller 208 to approach the conveyor frame 1, thereby enabling cleaning.

[0025] Furthermore, the guide rail 203 and the sliding block 204 are adapted to each other, and the two are closely matched through precise dimensional tolerances and optimized contact surface morphology. The movement of the sliding block 204 on the guide rail 203 relies on the hardened contact surface and low friction coefficient material, which effectively suppresses vibration and offset during operation and ensures the stability and positioning accuracy of displacement under high speed or high load conditions. This guiding system provides reliable rigid support and precise trajectory control for the overall movement of the cleaning component, and structurally ensures the long-term stability of the equipment operation. The first motor 210 is fixed to the tilting frame 202 by bolts. This connection method not only realizes the precise alignment between the motor shaft and the drive mechanism and avoids transmission errors, but also facilitates quick disassembly and replacement during the equipment maintenance cycle. The modular design based on bolt connection significantly improves the maintainability of the drive unit, so that the debugging, maintenance or replacement of the motor can be completed without the aid of large tools, effectively shortening the equipment downtime and meeting the requirements of industrial production for equipment maintainability.

[0026] Furthermore, the conveyor frame 1 is equipped with support legs, which are made of a composite structure of engineering plastic and metal lining, with anti-slip and vibration-damping pads at the bottom. The legs can be precisely adjusted in height through a threaded structure, effectively compensating for uneven ground. This design not only ensures the overall stability of the conveyor frame 1 under dynamic loads and avoids displacement or shaking caused by equipment vibration, but also facilitates subsequent installation, commissioning, and docking with other equipment. It ensures the smoothness and reliability of the entire line operation from the structural source. The fixed frame 201 is equipped with reinforcing ribs, which are manufactured using an integral molding process with the frame body and arranged at specific angles and in a distribution pattern in stress concentration areas. This significantly improves the bending and torsional stiffness of the frame. Without significantly increasing the overall weight, this design effectively suppresses the elastic deformation and vibration of the frame body under load through reasonable material distribution, ensuring the positioning accuracy and operational reliability of the actuators installed on it under long-term high-cycle operation and extending the structural life of the equipment.

[0027] Furthermore, the packaging structure 3 includes a support frame mounted on the conveyor frame 1. The support frame is equipped with a cylinder 301, and the driving end of the cylinder 301 is equipped with a movable frame 302. The support frame has a sliding groove 304, and the movable frame 302 has a movably mounted pulley 303 that abuts against the sliding groove 304. The movable frame 302 has a working box 305, and the working box 305 has a movably mounted rotating shaft 306. The rotating shaft 306 has a transmission gear 307, and the working box 305 has a second motor 308 whose driving end is connected to the rotating shaft 306. The working box 305 contains a guide frame 309, and the guide frame 309 has a movably mounted sliding frame 310. The sliding frame 310 has a heat-sealing knife 311, and the sliding frame 310 has a transmission rack 312 that is connected to the heat-sealing knife 311. The transmission gear 307 meshes, and the guide frame 309, sliding frame 310, heat sealing knife 311, transmission rack 312, and heat sealing knife 311 are all provided in pairs and symmetrically arranged. When food bags need to be heat-sealed, the drive cylinder 301 drives the moving frame 302 to move. The moving frame 302 moves stably on the slide groove 304 through the pulley 303. The position of the heat sealing knife 311 is adjusted according to the heat sealing height of the food bag to be packaged. Thinner plastic food bags are automatically conveyed by the conveyor frame 1 and stop between the two heat sealing knives 311. The second motor 308 is driven, which drives the rotating shaft 306 to rotate. The rotating shaft 306 drives the transmission gear 307 to rotate. Under the action of the transmission gear 307, the pair of transmission racks 312 drive the sliding frame 310 to move on the guide frame 309. The pair of sliding frames 310 can drive the pair of heat sealing knives 311 to move closer to each other to heat seal the thinner plastic food bags.

[0028] Furthermore, the rotating shaft 306 is adapted to the working box 305. The shaft system is supported in the box hole by a preload-adjustable rolling bearing assembly, ensuring the coaxiality and radial runout accuracy of the rotation center. The rotating shaft 306 achieves an optimized power transmission layout within the box. Its surface is specially hardened and equipped with a multi-seal structure, which not only ensures the smooth and efficient transmission of transmission torque, but also effectively prevents lubricating medium leakage and dust intrusion, significantly improving the service life and operational reliability of the core transmission components under continuous working conditions. The support frame is equipped with reinforcing ribs. Through the scientifically distributed longitudinal, transverse, and diagonal rib structure, while controlling the overall structural weight, it significantly improves the bending stiffness and buckling resistance of the support frame under complex load conditions. This reinforcement system effectively suppresses the frame deformation caused by periodic vibration during equipment operation, providing a stable installation benchmark for the upper moving parts and ensuring the long-term dynamic accuracy and structural integrity of the equipment.

[0029] Furthermore, the slide groove 304 is adapted to the pulley 303. The inner wall of the slide groove 304 is hardened and maintains a specific surface roughness, forming an optimized friction pair with the pulley 303 made of engineering plastic material. This combination ensures smooth movement while effectively suppressing lateral sway and radial offset, ensuring the trajectory accuracy of the sliding frame 310 during reciprocating motion. Through precise dimensional tolerance control and reasonable fit clearance design, this guiding system not only reduces the wear rate of moving parts but also provides a stable linear motion reference for the heat sealing knife 311 module, thereby ensuring the straightness and consistency of sealing operations. The second motor 308 is fixed to the working box 305 by bolts. This rigid connection method can effectively transmit motor torque and suppress operating vibration, while providing sufficient heat dissipation conditions for the motor. Based on the modular installation design, the maintenance and replacement of the motor are more convenient. The entire disassembly can be carried out by simply removing the connecting bolts, which greatly simplifies the maintenance process and improves the maintainability of the equipment.

[0030] Furthermore, the cylinder 301 is fixed to the support frame by bolts. This rigid connection not only effectively withstands the reaction force generated when the cylinder 301 is actuated and suppresses vibration, but also distributes the load evenly to the main structure of the support frame through a reasonable force flow transmission path. This ensures that the positional accuracy and operational reliability of the actuator are maintained during long-term, high-cycle operation. The guide frame 309 is adapted to the sliding frame 310. This guide system achieves smooth linear motion without gaps through an optimized preload adjustment mechanism, effectively suppressing the lateral torque generated during the heat sealing process. This ensures that the sliding frame 310 and its connected heat sealing knife 311 maintain precise trajectory control during high-speed reciprocating motion, providing a key guarantee for the quality of packaging sealing.

[0031] Working principle: When heat-sealing food bags is required, the drive cylinder 301 moves the movable frame 302. The movable frame 302 moves stably on the slide groove 304 via pulleys 303. The position of the heat-sealing blade 311 is adjusted according to the heat-sealing height of the food bag to be packaged. Thinner plastic food bags are automatically conveyed by the conveyor frame 1 and stop between the two heat-sealing blades 311. The second motor 308 is then driven, which drives the rotating shaft 306 to rotate. The rotating shaft 306 drives the transmission gear 307 to rotate. A pair of transmission racks 312, under the action of the transmission gear 307, drive the sliding frame 310 to move on the guide frame 309. The pair of sliding frames 310 can drive the pair of heat-sealing blades 311 to move closer together to the thinner plastic food bag. When cleaning the plastic food bags during heat sealing, the position of the cleaning roller 208 needs to be adjusted. During cleaning, the first motor 210 is driven, which drives the second pulley 211 to rotate. The transmission belt 212, under the action of the second pulley 211, drives the first pulley 209 to rotate. The first pulley 209 drives the rotating shaft 207 to rotate, which in turn drives the cleaning roller 208 to rotate. This drives the electric push rod 205, which in turn drives the sliding block 204 to move on the guide rail 203. The guide rail 203 drives the connecting rod 206 to rotate, which in turn drives the flipping frame 202 to rotate on the fixed frame 201. The flipping frame 202 can then move the rotating cleaning roller 208 closer to the conveyor frame 1, thereby enabling cleaning.

[0032] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An automatic feeding and packaging device for food bag processing, comprising a conveyor frame (1), characterized in that: The conveyor frame (1) is provided with an adjustment structure (2) and a packaging structure (3). The adjustment structure (2) includes a fixed frame (201), which is mounted on the conveyor frame (1). A tilting frame (202) is movably mounted on the fixed frame (201). A guide rail (203) is mounted on the fixed frame (201), and a sliding block (204) is mounted on the guide rail (203). An electric push rod (205) is mounted on the fixed frame (201), and the driving end of the electric push rod (205) is connected to the sliding block (204). A connecting rod (204) is movably mounted on the sliding block (204). 6) The connecting rod (206) is movably connected to the flipping frame (202). The flipping frame (202) is provided with a rotating shaft (207), a cleaning roller (208) is provided on the rotating shaft (207), a first pulley (209) is provided on the rotating shaft (207), a first motor (210) is provided on the flipping frame (202), a second pulley (211) is provided at the driving end of the first motor (210), and a transmission belt (212) is provided on the first pulley (209) and the second pulley (211).

2. The automatic feeding and packaging device for food bag processing according to claim 1, characterized in that: The guide rail (203) is adapted to the sliding block (204), and the first motor (210) is fixed to the flipping frame (202) by bolts.

3. The automatic feeding and packaging device for food bag processing according to claim 1, characterized in that: The conveyor frame (1) is provided with support legs, and the fixing frame (201) is provided with reinforcing ribs.

4. The automatic feeding and packaging device for food bag processing according to claim 1, characterized in that: The packaging structure (3) includes a support frame, which is mounted on the conveyor frame (1). A cylinder (301) is mounted on the support frame, and a movable frame (302) is mounted on the driving end of the cylinder (301). A sliding groove (304) is mounted on the support frame, and a pulley (303) is movably mounted on the movable frame (302) and abuts against the sliding groove (304). A work box (305) is mounted on the movable frame (302), and a rotating shaft (306) is movably mounted on the work box (305). The rotating shaft (306) is provided with a transmission gear (307), the working box (305) is provided with a second motor (308) and the driving end of the second motor (308) is connected to the rotating shaft (306), the working box (305) is provided with a guide frame (309), the guide frame (309) is movably provided with a sliding frame (310), the sliding frame (310) is provided with a heat sealing knife (311), the sliding frame (310) is provided with a transmission rack (312) and the transmission rack (312) meshes with the transmission gear (307).

5. The automatic feeding and packaging device for food bag processing according to claim 4, characterized in that: The rotating shaft (306) is adapted to the working box (305), and the support frame is provided with reinforcing ribs.

6. The automatic feeding and packaging device for food bag processing according to claim 4, characterized in that: The slide (304) is adapted to the pulley (303), and the second motor (308) is fixed to the work box (305) by bolts.

7. The automatic feeding and packaging device for food bag processing according to claim 4, characterized in that: The cylinder (301) is fixed to the support frame by bolts, and the guide frame (309) is adapted to the sliding frame (310).

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