An automated conveying device and method for a food filling production line.

Abstract

This invention discloses an automatic conveying device and method for a food filling production line, specifically relating to the field of conveying equipment. It includes a support frame, a lower frame fixedly connected to the support frame, an upper frame mounted on the lower frame, and a movable connecting plate rotatably connecting the lower and upper frames. A long-distance conveyor belt is installed on the lower frame, and two short-distance conveyor belts symmetrically installed at both ends of the upper frame are also included. A connecting frame is installed on the upper frame, and a conveying assembly is mounted on the connecting frame. A hinge seat is fixedly connected to each side of the connecting frame, and an electric push rod is fixedly connected to each side of the upper frame. The output end of the electric push rod is fixedly connected to a hinge joint. This invention, by setting up a connecting frame, electric push rods, a locking assembly, a concave connecting plate, and a sliding rod, achieves bidirectional autonomous conveying from upper to lower and lower to upper layers within the same equipment, significantly reducing equipment investment costs and floor space.

Description

Technical Field

[0001] This invention relates to the field of conveying equipment technology, and more specifically, to an automatic conveying device and method for a food filling production line. Background Technology

[0002] Automatic conveying equipment in food filling production lines is mainly used to efficiently and stably transfer containers to be filled or finished products between various production stations. In order to save factory space and improve space utilization, modern conveying lines often adopt a double-layer or multi-layer three-dimensional layout. The upper layer is used for returning empty containers or conveying auxiliary materials, and the lower layer is used for finished product output, or vice versa. This compact structure puts higher demands on the flexible switching capability of the conveying equipment.

[0003] In the prior art, a patent document with publication number CN120229524B discloses a double-layer automatic conveying device for a filling production line. This device includes a conveying mechanism with two sets of output mechanisms mounted on it. Four sets of stabilizing mechanisms are mounted on the left and right sides of the conveying mechanism, and a support mechanism is mounted at the bottom. Two sets of multi-functional mechanisms are mounted on the conveying mechanism and the support mechanism. This solves the problem that the positions of the upper and lower conveyor belts cannot be properly adjusted, and that when filling production, the large products at the top of the two conveyor belts are difficult for the external robotic arm to grasp. However, its upper and lower conveyor... The line is completely independent in function, limited to positional adjustment within the same horizontal plane. When the production process requires transferring materials from the upper layer to the lower layer, or lifting materials from the lower layer to the upper layer, the equipment cannot complete this independently. Currently, such cross-layer transfers must rely on large industrial robotic arms separately configured outside the production line for handling. This not only significantly increases the investment cost of the equipment and occupies additional production space, but also easily causes production line blockage or efficiency reduction because the robotic arm's movement rhythm is difficult to perfectly match with the conveyor line speed, thus destroying the original compact and efficient layout advantages of the double-layer conveyor line.

[0004] In summary, in order to achieve efficient, low-cost, flexible, and autonomous transfer of materials between upper and lower layers, it is necessary to solve the problems that existing double-layer conveying equipment cannot independently complete cross-layer transfer and that rely on external equipment, resulting in high costs and large footprints. The goal is to enable the equipment to independently complete the autonomous transfer of materials between upper and lower layers without disrupting the compact double-layer layout. Summary of the Invention

[0005] The present invention provides an automatic conveying device and method for a food filling production line, which aims to solve the problem that existing double-layer conveying equipment cannot independently complete cross-layer conveying and relies on external equipment, resulting in high costs and large footprint.

[0006] To achieve the above objectives, the present invention provides the following technical solution: an automatic conveying device for a food filling production line, comprising a support frame, a lower frame fixedly connected to the support frame, an upper frame provided on the lower frame, a movable connecting plate rotatably connected between the lower frame and the upper frame, a long-distance conveyor belt installed on the lower frame, and two short-distance conveyor belts symmetrically installed at both ends of the upper frame, a connecting frame installed on the upper frame, and a conveying component installed on the connecting frame; A hinge seat is fixedly connected to each side of the connecting frame, and an electric push rod is fixedly connected to each side of the upper frame. A hinge joint is fixedly connected to the output end of the electric push rod. The hinge joint and the hinge seat are rotatably connected. The electric push rod is used to drive the hinge joint to move in the vertical direction. A positioning rod is fixedly connected to each end of the connecting frame. The positioning rod has a locking through hole. The bottom of the upper frame has several arc-shaped slots and lock holes. A fixing sleeve is provided on one side of the arc-shaped slot. The fixing sleeve is fixedly connected to the upper frame. A locking component is installed inside the fixing sleeve. The output end of the locking component is connected to a locking pin. The locking pin passes through the locking through hole and the lock hole and slides in fit. The locking component is used to drive the locking pin to move in a preset direction, thereby locking or releasing the positioning rod. Several sliding rods are fixedly connected to the positioning end rod. Several concave connecting plates are rotatably connected between the lower frame and the upper frame. Arc-shaped sliding grooves are opened on the concave connecting plates. Wear-resistant bushings are fixedly connected to the inner side of the arc-shaped sliding grooves. The arc-shaped sliding grooves and sliding rods are slidably connected. The arc-shaped sliding grooves are used to limit the sliding trajectory of the sliding rods.

[0007] In a preferred embodiment, the conveying assembly includes a stepper motor fixedly connected to the connecting frame, an active roller fixedly connected to the output end of the stepper motor, two drive rollers rotatably connected to both ends of the connecting frame, and a conveyor belt sleeved on the outside of the active roller and the drive roller. The stepper motor is used to drive the active roller to rotate, and the conveyor belt is provided with a plurality of anti-slip patterns.

[0008] In a preferred embodiment, the locking assembly includes an electromagnetic coil fixedly connected within a fixed sleeve, an armature slidably connected within the fixed sleeve, and a compression spring fixedly connected between the fixed sleeve and the armature. The armature and the locking pin are fixedly connected. The electromagnetic coil generates an electromagnetic field through an external power supply to attract the armature, thereby controlling the locking pin to lock the positioning end rod.

[0009] In a preferred embodiment, a plurality of arc-shaped card seats are fixedly connected to the lower frame. A limiting component is provided on one side of the arc-shaped card seat. The limiting component is installed on the lower frame. The output end of the limiting component is connected to two symmetrical upper limit blocks. The limiting component is used to drive the two upper limit blocks to move towards or away from each other.

[0010] In a preferred embodiment, the limiting component includes a stepper motor II fixedly connected to the lower frame, a gear fixedly connected to the output end of the stepper motor II via a shaft, two racks symmetrically meshing on both sides of the gear, and a connecting frame I fixedly connected to the racks. The connecting frame I is fixedly connected to the upper limit block. The stepper motor II is used to drive the gear to rotate. Several sliding grooves are provided on the lower frame, and the sliding grooves are slidably connected to the connecting frame I.

[0011] In a preferred embodiment, two symmetrical overlapping components are installed at both ends of the connecting frame, and the output end of the overlapping components is connected to a flexible transfer plate. The overlapping components are used to drive the flexible transfer plate to rotate. The overlapping assembly includes an electric push rod 2 with one end rotatably connected to the connecting frame, a rotating ring rotatably connected to the connecting frame, and a connecting frame 2 fixedly connected to the rotating ring. The other end of the electric push rod 2 is rotatably connected to the connecting frame 2, and the connecting frame 2 is fixedly connected to the flexible transfer plate.

[0012] In a preferred embodiment, a speed detector is fixedly connected to the connecting frame 2. The speed detector is used to detect the conveying speed of the short-distance conveyor belt or movable connecting plate that is connected, and transmits the detection signal to an external controller to control the conveying speed to be consistent.

[0013] In a preferred embodiment, a mounting frame is fixedly connected to the connecting frame, and a guide component is installed on the mounting frame. The output end of the guide component is connected to two symmetrical connecting frames three. The guide component is used to drive the two connecting frames three to move towards or away from each other. A guide plate is fixedly connected to the connecting frame three.

[0014] In a preferred embodiment, the guide assembly includes a stepper motor three fixedly connected to the mounting frame, a threaded rod one fixedly connected to the output end of the stepper motor three at one end, a coupling one fixedly connected to the other end of the threaded rod one at one end, and a threaded rod two fixedly connected to the other end of the coupling at one end. The threaded rod one, the coupling, and the threaded rod two are all rotatably connected to the mounting frame. A connecting frame three is threadedly connected to the threaded rod one and the threaded rod two respectively. The stepper motor three is used to drive the threaded rod one to rotate.

[0015] When using an automatic conveying method for a food filling production line according to this technical solution, an automatic conveying device for a food filling production line as described above is used, and the conveying method includes the following four working modes: Mode 1: Normal conveying between upper and lower levels; The upper frame and the lower frame remain parallel and horizontal. The long-distance conveyor belt, the short-distance conveyor belt and the conveyor belt on the connecting frame operate independently. The movable connecting plate is in the initial position. The workpiece is transported in a straight line along the horizontal direction on the long-distance conveyor belt and the short-distance conveyor belt. Mode 2: Staggered conveying between upper and lower layers; By moving the upper frame to create a horizontal left-right misalignment relative to the lower frame, the movable connecting plate rotates to adapt to the misalignment angle, thereby achieving the positional offset of the upper and lower conveyor belts, so that the external robotic arm can insert and grab the workpiece. At this time, the electric push rod is not activated, and the connecting frame remains in a horizontal state. Mode 3: The upper-level workpiece is transported to the lower level; One end of the connecting frame near the conveying direction is locked by the locking component. When the electromagnetic coil is de-energized, the compression spring pushes the armature, causing the locking pin to pass through the locking through hole and the locking hole, locking the positioning rod onto the upper frame. The other end of the connecting frame away from the conveying direction is not locked. When the electric push rod is started, its output end drives the hinge joint to move vertically. The hinge joint drives the hinge seat to rotate, which in turn drives that end of the connecting frame to descend. The slide rod slides down along the arc-shaped groove of the concave connecting plate to the arc-shaped card seat. The stepper motor drives the gear to rotate, causing the two racks to move towards each other. The racks drive the two upper limit blocks to move towards each other through the connecting frame, limiting and locking the slide rod in the arc-shaped card seat, forming an inclined transfer channel from top to bottom. The workpiece is transported from the short-distance conveyor belt of the upper frame to the long-distance conveyor belt of the lower frame via the conveyor belt along the inclined direction. Mode 4: Lower layer workpieces are transported to upper layer; One end of the connecting frame closest to the conveying direction is locked by a locking component, in the same locking method as in Mode 3. The other end of the connecting frame furthest from the conveying direction is not locked. When the electric push rod is activated, its output end drives the hinge joint to move vertically. The hinge joint drives the hinge seat to rotate, thereby driving that end of the connecting frame to rise. The slide rod slides upward along the arc-shaped groove of the concave connecting plate to the arc-shaped card seat on the other side. The limiting component limits and locks the slide rod in the same way as in Mode 3, forming a reverse inclined transfer channel from bottom to top. The workpiece is transported from the long-distance conveyor belt of the lower frame to the upper frame via the conveyor belt in the inclined direction. In modes three and four, after the connecting frame moves into position, the speed detector detects the conveying speed of the short-distance conveyor belt or movable connecting plate that is being connected, and transmits the detection signal to the external controller. The controller controls the speed of stepper motor one so that the linear speed of the conveyor belt is consistent with the speed of the connected conveyor belt. At the same time, electric push rod two starts, driving connecting frame two to rotate around the rotating ring, which drives the flexible transfer plate to rotate to the overlapping position, completing the flexible transfer of the workpiece between the conveyor belts. Stepper motor three synchronously drives the guide plate to adjust the width, guiding the workpiece to enter or leave the conveyor belt in the correct direction.

[0016] The beneficial effects of this invention are as follows: 1. By setting up a connecting frame, an electric push rod, a locking component, a concave connecting plate, and a sliding rod, this invention enables bidirectional autonomous conveying from the upper layer to the lower layer and from the lower layer to the upper layer within the same equipment. It does not require external robotic arms, significantly reducing equipment investment costs and floor space, while perfectly preserving the compact layout advantages of a double-layer conveyor line.

[0017] 2. By setting up a speed detector, overlapping components and flexible transfer plate, this invention not only eliminates the problems of workpiece accumulation, overturning or pulling caused by speed difference, but also fills the height and gap difference between components through flexible overlapping, realizing a smooth transition of workpieces with "zero impact" between different conveyor belts. It is especially suitable for high-speed and stable transportation of fragile and easily deformable food packaging.

[0018] 3. By setting limit components and arc-shaped card seats and upper limit blocks, the present invention ensures the structural rigidity of the inclined transfer channel when it is under heavy load or high speed, effectively preventing the connection frame from accidentally resetting or shaking due to vibration or off-center load, and significantly improving the stability and safety of equipment operation.

[0019] 4. By setting up a guiding component and symmetrical guide plates, the present invention can automatically and accurately adjust the distance between the two guide plates according to the width of different workpieces, correct the deviation trend caused by centrifugal force or vibration, and ensure that the workpiece is accurately centered and enters the next station or conveyor belt. It is especially suitable for containers with irregular shape or high center of gravity, effectively reducing the risk of bottle jamming and tipping, and improving the overall operating efficiency of the filling production line.

[0020] 5. This invention extends the service life of key moving parts of the equipment by setting a wear-resistant bushing on the inner side of the arc-shaped groove of the concave connecting plate and using a locking method controlled by an electromagnetic coil and a compression spring. On the other hand, the electromagnetic coil is mechanically self-locked by the compression spring pushing the locking pin when the power is off, and is only energized when unlocking is needed. This "power-off safety lock" design reduces the energy consumption of continuous power supply and can still maintain the locked state in the event of an accidental power failure, preventing the tilted channel from suddenly collapsing and providing a high level of safety protection. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0022] Figure 2 This is a schematic diagram of the lower frame structure of the present invention.

[0023] Figure 3 This is a schematic diagram of the upper limit block structure of the present invention.

[0024] Figure 4 This is a schematic diagram of the upper frame structure of the present invention.

[0025] Figure 5 This is a schematic diagram of the structure of the electric actuator of the present invention.

[0026] Figure 6 This is a schematic diagram of the locking pin structure of the present invention.

[0027] Figure 7 This is a schematic diagram of the overall structure of the connection frame of the present invention.

[0028] Figure 8 This is a schematic cross-sectional view of the connection frame structure of the present invention.

[0029] Figure 9 This is a schematic diagram of the flexible transfer plate structure of the present invention.

[0030] Figure 10 This is a schematic diagram of the guide plate structure of the present invention.

[0031] Figure 11 This is a schematic diagram of the concave connecting plate structure of the present invention.

[0032] The attached diagram is labeled as follows: 1. Support frame; 2. Lower frame; 201. Slide groove; 3. Upper frame; 301. Arc-shaped slot; 302. Locking hole; 4. Long-distance conveyor belt; 5. Short-distance conveyor belt; 6. Movable connecting plate; 7. Connecting frame; 801. Stepper motor one; 802. Drive roller; 803. Transmission roller; 804. Conveyor belt; 8041. Anti-slip texture; 9. Hinge seat; 10. Electric push rod one; 11. Hinge joint; 12. Positioning end rod; 1201. Locking through hole; 13. Slide rod; 14. Concave connecting plate; 1401. Arc-shaped slide groove; 15. Wear-resistant bushing; 16. 1701. Fixed sleeve; 1702. Electromagnetic coil; 1703. Armature; 1704. Compression spring; 1705. Locking post; 1706. Arc-shaped card seat; 2007. Stepper motor II; 2008. Gear; 2009. Rack; 20000. Connecting frame I; 21. Upper limit block; 2201. Electric push rod II; 2202. Rotary ring; 2203. Connecting frame II; 23. Flexible transfer plate; 24. Speed ​​detector; 25. Mounting frame; 2601. Stepper motor III; 2602. Threaded rod I; 2603. Coupling; 2604. Threaded rod II; 27. Connecting frame III; 28. Guide plate. Detailed Implementation

[0033] The present application will now be described in further detail with reference to the accompanying drawings. It should be noted that the following specific embodiments are only used to further illustrate the present application and should not be construed as limiting the scope of protection of the present application. Those skilled in the art can make some non-essential improvements and adjustments to the present application based on the above application content.

[0034] Refer to the instruction manual appendix Figures 1 to 11An automatic conveying device for a food filling production line includes a support frame 1, a lower frame 2 fixedly connected to the support frame 1, an upper frame 3 on the lower frame 2, a movable connecting plate 6 rotatably connected between the lower frame 2 and the upper frame 3, a long-distance conveyor belt 4 installed on the lower frame 2, and two short-distance conveyor belts 5 symmetrically installed at both ends of the upper frame 3. A connecting frame 7 is installed on the upper frame 3, and a conveying component is installed on the connecting frame 7. A hinge seat 9 is fixedly connected to each side of the connecting frame 7, and an electric push rod 10 is fixedly connected to each side of the upper frame 3. A hinge joint 11 is fixedly connected to the output end of the electric push rod 10. The hinge joint 11 and the hinge seat 9 are rotatably connected. The electric push rod 10 is used to drive the hinge joint 11 to move in the vertical direction. A positioning rod 12 is fixedly connected to each end of the connecting frame 7. The positioning rod 12 has a locking through hole 1201. The bottom of the upper frame 3 has several arc-shaped slots 301 and locking holes 302. A fixing sleeve 16 is provided on one side of the arc-shaped slots 301. The fixing sleeve 16 is fixedly connected to the upper frame 3. A locking component is installed inside the fixing sleeve 16. The output end of the locking component is connected to a locking pin 18. The locking pin 18 passes through the locking through hole 1201 and the locking hole 302 and slides in fit. The locking component is used to drive the locking pin 18 to move in a preset direction, thereby locking or unlocking the positioning rod 12. Several sliding rods 13 are fixedly connected to the positioning end rod 12. Several concave connecting plates 14 are rotatably connected between the lower frame 2 and the upper frame 3. The concave connecting plates 14 are provided with arc-shaped sliding grooves 1401. Wear-resistant bushings 15 are fixedly connected to the inner side of the arc-shaped sliding grooves 1401. The arc-shaped sliding grooves 1401 and the sliding rods 13 are slidably connected. The arc-shaped sliding grooves 1401 are used to limit the sliding trajectory of the sliding rods 13.

[0035] It should be noted that the support frame 1 is used to support the entire equipment and is fixed on the mounting base. The lower frame 2 is fixedly connected to the support frame 1, and the upper frame 3 is movably set above the lower frame 2. The two are rotatably connected by a movable connecting plate 6. The movable connecting plate 6 can rotate adaptively when the upper and lower layers are misaligned to maintain connection stability. The long-distance conveyor belt 4 is installed on the lower frame 2 and extends horizontally for long-distance conveying of workpieces in the lower layer. Two short-distance conveyor belts 5 are symmetrically installed at both ends of the upper frame 3 for multi-segment short-distance connection conveying of the long layer. The connecting frame 7 is installed on the upper frame 3 and can be tilted relative to the upper frame 3. The conveying assembly is installed on the connecting frame 7 for transferring workpieces between the upper and lower layers. The electric push rod 10 provides a vertical linear driving force, driving the hinge joint 11 to move the hinge seat 9 in the vertical direction, thereby controlling the connecting frame 7 to tilt or reset relative to the upper frame 3.

[0036] It is worth noting that the positioning rod 12 is used to cooperate with the locking component after the connecting frame 7 is tilted into place, so as to lock or release the end of the connecting frame 7. The arc-shaped slot 301 is set at the bottom of the upper frame 3, so as to accommodate and guide the positioning rod 12 back to its original position when the connecting frame 7 is reset. The locking hole 302 is opened on the upper frame 3, which is concentrically corresponding to the locking through hole 1201 on the positioning rod 12, so as to provide a passage for the locking pin 18. The locking component is installed in the fixing sleeve 16, so as to control the extension and retraction of the locking pin 18, so as to realize the mechanical locking or unlocking of the positioning rod 12. The slide rod 13 Fixed at both ends of the positioning rod 12, serving as a sliding guide when the connecting frame 7 is tilted, the concave connecting plate 14 rotates between the lower frame 2 and the upper frame 3 (the concave connecting plate 14 is sized to avoid motion interference) to support the slide rod 13 and provide a sliding track. The arc-shaped groove 1401 is opened on the concave connecting plate 14, and its arc-shaped trajectory is used to limit the sliding path of the slide rod 13, so that the connecting frame 7 moves along a predetermined arc when tilted. The wear-resistant bushing 15 is fixed inside the arc-shaped groove 1401 to reduce friction and wear when the slide rod 13 slides and extend its service life.

[0037] Refer to the instruction manual appendix Figure 7 and Figure 8 The conveying assembly includes a stepper motor 801 fixedly connected to the connecting frame 7, a drive roller 802 fixedly connected to the output end of the stepper motor 801, two transmission rollers 803 respectively rotatably connected to both ends of the connecting frame 7, and a conveyor belt 804 sleeved on the outside of the drive roller 802 and the transmission rollers 803. The stepper motor 801 is used to drive the drive roller 802 to rotate, and the conveyor belt 804 is provided with a number of anti-slip patterns 8041.

[0038] It should be noted that the stepper motor 801 provides precise rotational driving force, driving the drive roller 802 to rotate. The drive roller 802 drives the conveyor belt 804 to run. The two transmission rollers 803 rotate synchronously with the conveyor belt 804 and keep the belt tensioned. When the conveyor belt 804 is running, the anti-slip texture 8041 contacts the bottom surface of the workpiece to generate friction, preventing the workpiece from slipping when it is being conveyed at an incline. When it is necessary to change the conveying speed, the external controller adjusts the speed of the stepper motor 801 so that the linear speed of the conveyor belt 804 is consistent with the overlay conveyor belt.

[0039] Refer to the instruction manual appendix Figure 6 The locking assembly includes an electromagnetic coil 1701 fixedly connected in the fixed sleeve 16, an armature 1702 slidably connected in the fixed sleeve 16, and a compression spring 1703 fixedly connected between the fixed sleeve 16 and the armature 1702. The armature 1702 and the locking pin 18 are fixedly connected. The electromagnetic coil 1701 generates an electromagnetic field through an external power supply to attract the armature 1702, thereby controlling the locking pin 18 to lock the positioning end rod 12.

[0040] It should be noted that the fixing sleeve 16 is fixed to the upper frame 3, and its hollow interior is used to accommodate the locking components. The electromagnetic coil 1701 is fixed inside the fixing sleeve 16 and generates an electromagnetic field after being energized by an external power source. The armature 1702 is slidably connected inside the fixing sleeve 16 and fixedly connected to the locking pin 18. It can be attracted and moved under the action of the electromagnetic field. The compression spring 1703 is fixed between the fixing sleeve 16 and the armature 1702 and is used to provide a reset force when the electromagnetic coil 1701 is de-energized, pushing the armature 1702 to drive the locking pin 18 through the locking through hole 1201 and the lock hole 302 to achieve mechanical locking of the positioning end rod 12. When unlocking is required, the electromagnetic coil 1701 is energized to generate an electromagnetic field, attracting the armature 1702 to move inward against the force of the compression spring 1703. The armature 1702 drives the locking pin 18 to retract, and the locking pin 18 exits from the locking through hole 1201 and the lock hole 302, and the positioning end rod 12 is released.

[0041] Refer to the instruction manual appendix Figure 3 Several arc-shaped card holders 19 are fixedly connected to the lower frame 2. A limiting component is provided on one side of the arc-shaped card holder 19. The limiting component is installed on the lower frame 2. The output end of the limiting component is connected to two symmetrical upper limit blocks 21. The limiting component is used to drive the two upper limit blocks 21 to move towards or away from each other.

[0042] It should be noted that the arc-shaped card holder 19 is fixed on the lower frame 2 and has several units. It is used to cooperate with the upper limit block 21 to form a limiting structure after the slide rod 13 slides into place. The limiting component is installed on the lower frame 2 and located on one side of the arc-shaped card holder 19. Its output end is connected to two symmetrically arranged upper limit blocks 21. The limiting component is used to drive the two upper limit blocks 21 to move towards or away from each other. When the two upper limit blocks 21 move towards each other, they can clamp the slide rod 13 and limit it in the arc-shaped card holder 19 to prevent the slide rod 13 from coming out.

[0043] Refer to the instruction manual appendix Figure 2 and Figure 3 The limiting component includes a second stepper motor 2001 fixedly connected to the lower frame 2, a gear 2002 fixedly connected to the output end of the second stepper motor 2001 via a shaft, two racks 2003 symmetrically meshed on both sides of the gear 2002, and a first connecting frame 2004 fixedly connected to the rack 2003. The first connecting frame 2004 is fixedly connected to the upper limit block 21. The second stepper motor 2001 is used to drive the gear 2002 to rotate. Several sliding grooves 201 are provided on the lower frame 2. The sliding grooves 201 and the first connecting frame 2004 are slidably connected.

[0044] It should be noted that stepper motor 2001 provides precise rotational driving force, driving gear 2002 to rotate. Gear 2002 drives the meshing racks 2003 on both sides to move in opposite directions in a straight line. The racks 2003 drive the upper limit block 21 to move through connecting bracket 2004. When it is necessary to lock the slide bar 13, stepper motor 2001 drives gear 2002 to rotate in the forward direction, causing the two racks 2003 to move towards each other, driving the two upper limit blocks 21 to move towards each other and clamp the slide bar 13. When it is necessary to release the slide bar 13, stepper motor 2001 drives gear 2002 to rotate in the reverse direction, causing the two racks 2003 to move away from each other, driving the two upper limit blocks 21 to move away from each other and release the slide bar 13. Connecting bracket 2004 slides linearly along the slide groove 201, providing guidance for the upper limit block 21.

[0045] Refer to the instruction manual appendix Figure 9 Two symmetrical overlapping components are installed at both ends of the connecting frame 7. The output end of the overlapping component is connected to the flexible transfer plate 23. The overlapping component is used to drive the flexible transfer plate 23 to rotate. The overlapping assembly includes an electric push rod 2201 with one end rotatably connected to the connecting frame 7, a rotating ring 2202 rotatably connected to the connecting frame 7, and a connecting frame 2203 fixedly connected to the rotating ring 2202. The other end of the electric push rod 2201 is rotatably connected to the connecting frame 2203, and the connecting frame 2203 is fixedly connected to the flexible transfer plate 23.

[0046] It should be noted that the two overlapping components are symmetrically installed at both ends of the connecting frame 7 to drive the flexible transfer plate 23 to rotate. The flexible transfer plate 23 has flexible and deformable characteristics, which can fit the surface of the conveyor belt when overlapping, adapt to the small height difference of different conveyor belt surfaces, and achieve a smooth transition of the workpiece. When the connecting frame 7 is tilted into place, the electric push rod 2201 starts to extend or retract, pushing the connecting frame 2203 to rotate around the rotating ring 2202. The connecting frame 2203 drives the flexible transfer plate 23 to rotate to the overlapping position. When transferring from the upper layer to the lower layer, the flexible transfer plate 23 rotates downward to fit the surface of the short-distance conveyor belt 5 or the movable connecting plate 6. When transferring from the lower layer to the upper layer, the flexible transfer plate 23 rotates upward to the same fitting position.

[0047] Refer to the instruction manual appendix Figure 9 A speed detector 24 is fixedly connected to the connecting frame 2203. The speed detector 24 is used to detect the conveying speed of the short-distance conveyor belt 5 or the movable connecting plate 6 that are connected, and transmits the detection signal to the external controller to control the conveying speed to be consistent.

[0048] It should be noted that the speed detector 24 is activated after the connecting frame 7 has moved into position, and detects the conveying speed of the short-distance conveyor belt 5 or the movable connecting plate 6 in real time. When the connecting frame 7 is in an inclined transport state, the speed detector 24 transmits the detected speed signal to the external controller. The controller adjusts the speed of the stepper motor 801 according to the received speed signal, so that the linear speed of the conveyor belt 804 is consistent with the speed of the overlapping conveyor belt. When the speed difference is zero, the current speed is maintained. When there is a speed difference, the speed is accelerated or decelerated accordingly to avoid workpiece accumulation or pulling due to speed difference.

[0049] Refer to the instruction manual appendix Figure 10 A mounting bracket 25 is fixedly connected to the connecting frame 7. A guide component is installed on the mounting bracket 25. Two symmetrical connecting brackets 27 are connected to the output end of the guide component. The guide component is used to drive the two connecting brackets 27 to move towards or away from each other. A guide plate 28 is fixedly connected to the connecting bracket 27.

[0050] It should be noted that the mounting frame 25 serves as the supporting base for the guide assembly (the position and size of the mounting frame 25 are precisely designed to avoid interference with the movement). When the guide assembly is working, it drives the two connecting frames 27 to move in opposite directions or away from each other. The connecting frames 27 drive the guide plates 28 to move synchronously. The two guide plates 28 are symmetrically arranged to form a workpiece conveying channel. When conveying a workpiece with a larger width, the guide assembly drives the two connecting frames 27 to move away from each other, and the distance between the guide plates 28 increases. When conveying a workpiece with a smaller width, the guide assembly drives the two connecting frames 27 to move towards each other, and the distance between the guide plates 28 decreases. During the conveying process, the guide plates 28 continuously guide the workpiece to enter or leave the conveyor belt 804 in the correct direction to prevent the workpiece from deviating.

[0051] Refer to the instruction manual appendix Figure 10 The guide assembly includes a stepper motor 2601 fixedly connected to the mounting bracket 25, a threaded rod 2602 fixedly connected to the output end of the stepper motor 2601 at one end, a coupling 2603 fixedly connected to the other end of the threaded rod 2602 at one end, and a threaded rod 2604 fixedly connected to the other end of the coupling 2603 at one end. The threaded rod 2602, the coupling 2603, and the threaded rod 2604 are all rotatably connected to the mounting bracket 25. A connecting bracket 27 is threadedly connected to the threaded rod 2602 and the threaded rod 2604 respectively. The stepper motor 2601 is used to drive the threaded rod 2602 to rotate.

[0052] It should be noted that after stepper motor 2601 starts, it drives threaded rod 2602 to rotate. Threaded rod 2602 drives threaded rod 2604 to rotate synchronously through coupling 2603. Threaded rod 2602 and threaded rod 2604 are the same product with opposite thread directions. Therefore, when threaded rod 2602 rotates in the forward direction, one connecting frame 27 moves closer to stepper motor 2601, and the other connecting frame 27 moves away from stepper motor 2601. The two connecting frames 27 move in opposite directions. When threaded rod 2602 rotates in the reverse direction, the two connecting frames 27 move towards each other. The connecting frames 27 drive the guide plate 28 to move synchronously, realizing precise adjustment of the spacing between the guide plates 28.

[0053] Refer to the instruction manual appendix Figures 1 to 11 In this embodiment, the present invention provides an automatic conveying method for a food filling production line, employing an automatic conveying device for a food filling production line as described above, the conveying method including the following four working modes: Mode 1: Normal conveying between upper and lower levels; The upper frame 3 and the lower frame 2 remain parallel and horizontal. The long-distance conveyor belt 4, the short-distance conveyor belt 5 and the conveyor belt 804 on the connecting frame 7 operate independently. The movable connecting plate 6 is in the initial position. The workpiece is conveyed in a straight line along the horizontal direction on the long-distance conveyor belt 4 and the short-distance conveyor belt 5. Mode 2: Staggered conveying between upper and lower layers; By moving the upper frame 3 to create a horizontal left-right misalignment relative to the lower frame 2, the movable connecting plate 6 rotates to adapt to the misalignment angle, thereby achieving the positional offset of the upper and lower conveyor belts, so that the external robotic arm can insert and grab the workpiece. At this time, the electric push rod 10 does not start, and the connecting frame 7 remains in a horizontal state. Mode 3: The upper-level workpiece is transported to the lower level; One end of the connecting frame 7 near the conveying direction is locked by the locking assembly. The electromagnetic coil 1701 is de-energized, and the compression spring 1703 pushes the armature 1702, causing the locking pin 18 to pass through the locking through hole 1201 and the locking hole 302, locking the positioning end rod 12 onto the upper frame 3. The other end of the connecting frame 7 away from the conveying direction is not locked. The electric push rod 10 is activated, and its output end drives the hinge joint 11 to move vertically. The hinge joint 11 drives the hinge seat 9 to rotate, thereby driving that end of the connecting frame 7 to descend. The slide rod 13... The slide bar 1401 along the concave connecting plate 14 slides down to the arc-shaped card seat 19. The stepper motor 2001 drives the gear 2002 to rotate, which drives the two racks 2003 to move towards each other. The racks 2003 drive the two upper limit blocks 21 to move towards each other through the connecting frame 2004, which limits and locks the slide bar 13 in the arc-shaped card seat 19, forming an inclined transfer channel from top to bottom. The workpiece is transported from the short-distance conveyor belt 5 of the upper frame 3 to the long-distance conveyor belt 4 of the lower frame 2 via the conveyor belt 804 in an inclined direction. Mode 4: Lower layer workpieces are transported to upper layer; One end of the connecting frame 7 near the conveying direction is locked by a locking component, in the same way as in mode three. The other end of the connecting frame 7 away from the conveying direction is not locked. The electric push rod 10 is activated, and its output end drives the hinge joint 11 to move vertically. The hinge joint 11 drives the hinge seat 9 to rotate, thereby driving that end of the connecting frame 7 to rise. The slide rod 13 slides upward along the arc-shaped slide groove 1401 of the concave connecting plate 14 to the arc-shaped card seat 19 on the other side. The limiting component limits and locks the slide rod 13 in the same way as in mode three, forming a reverse inclined transfer channel from bottom to top. The workpiece is transported from the long-distance conveyor belt 4 of the lower frame 2 to the short-distance conveyor belt 804 in an inclined direction. In modes three and four, after the connecting frame 7 moves into position, the speed detector 24 detects the conveying speed of the short-distance conveyor belt 5 or the movable connecting plate 6 that is being connected to the conveyor belt 5, and transmits the detection signal to the external controller. The controller controls the rotation speed of the stepper motor 801 so that the linear speed of the conveyor belt 804 is consistent with the speed of the connected conveyor belt. At the same time, the electric push rod 2201 is started, driving the connecting frame 2203 to rotate around the rotating ring 2202, which drives the flexible transfer plate 23 to rotate to the overlapping position, completing the flexible transfer of the workpiece between the conveyor belts. The stepper motor 2601 synchronously drives the guide plate 28 to adjust the width, guiding the workpiece to enter or leave the conveyor belt 804 in the correct direction.

[0054] It should be noted that in modes three and four, the tilt of the connecting frame 7 is controlled by the electric push rod 10, the radius of curvature and extension direction of the arc-shaped chute 1401 determine the sliding trajectory of the slide rod 13, the wear-resistant bushing 15 is used to reduce friction and wear of the slide rod 13 during sliding and extend its service life, the upper limit block 21 clamps the slide rod 13 from both sides into the arc-shaped bracket 19 to ensure that the connecting frame 7 remains stable in the tilted state, the flexible transfer plate 23 rotates to the position of contact with the surface of the conveyor belt, the speed detector 24 provides real-time feedback of the speed signal, the controller adjusts the speed of the stepper motor 801 to achieve synchronous operation, the guide plate 28 automatically adjusts the spacing according to the workpiece width to guide the workpiece to smoothly enter or leave the conveyor belt 804, and completes the efficient and stable conveying between the upper and lower layers.

[0055] It is worth noting that in Mode 3, when transferring from the upper layer to the lower layer, the end of the connecting frame 7 closest to the conveying direction is locked, while the end furthest from the conveying direction is driven downward by the electric push rod 10, forming an inclined channel from top to bottom. In Mode 4, when transferring from the lower layer to the upper layer, the end of the connecting frame 7 closest to the conveying direction is locked, while the end furthest from the conveying direction is driven upward by the electric push rod 10, forming an inclined channel from bottom to top. In both modes, the slide rod 13 slides along the arc-shaped slide groove 1401. The slide rod 13 slides to... After positioning, the upper limit block 21 clamps the slide bar 13 from both sides into the arc-shaped bracket 19, ensuring that the connecting frame 7 remains stable in the tilted state. The flexible transfer plate 23 rotates to a position that fits against the surface of the conveyor belt. The speed detector 24 provides real-time feedback of the speed signal. The controller adjusts the speed of the stepper motor 801 to achieve synchronous operation. When the transfer is completed, the electric push rod 10 drives the connecting frame 7 to reset to the horizontal state. The limit component releases the slide bar 13, the locking component unlocks the positioning end rod 12, and the equipment returns to the standby state of mode one or mode two.

[0056] The above embodiments are merely illustrative of several implementation methods of the present invention, and their descriptions are relatively specific and detailed. However, they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements all fall within the protection scope of the present invention.

Claims

1. An automatic conveying device for a food filling production line, comprising a support frame (1), a lower frame (2) fixedly connected to the support frame (1), an upper frame (3) provided on the lower frame (2), a movable connecting plate (6) rotatably connected between the lower frame (2) and the upper frame (3), and a long-distance conveyor belt (4) installed on the lower frame (2), characterized in that: It also includes two short-distance conveyor belts (5) symmetrically installed at both ends of the upper frame (3), a connecting frame (7) is installed on the upper frame (3), and a conveying assembly is installed on the connecting frame (7); A hinge seat (9) is fixedly connected to each side of the connecting frame (7), and an electric push rod (10) is fixedly connected to each side of the upper frame (3). A hinge joint (11) is fixedly connected to the output end of the electric push rod (10). The hinge joint (11) and the hinge seat (9) are rotatably connected. The electric push rod (10) is used to drive the hinge joint (11) to move in the vertical direction. A positioning rod (12) is fixedly connected to each end of the connecting frame (7). The positioning rod (12) is provided with a locking through hole (1201). The bottom of the upper frame (3) is provided with several arc-shaped slots (301) and lock holes (302). A fixing sleeve (16) is provided on one side of the arc-shaped slots (301). The fixing sleeve (16) is fixedly connected to the upper frame (3). A locking component is installed inside the fixing sleeve (16). The output end of the locking component is connected to a locking pin (18). The locking pin (18) passes through the locking through hole (1201) and the lock hole (302) and slides in fit. The locking component is used to drive the locking pin (18) to move in a preset direction, thereby realizing the locking or unlocking of the positioning rod (12). Several sliding rods (13) are fixedly connected to the positioning end rod (12). Several concave connecting plates (14) are rotatably connected between the lower frame (2) and the upper frame (3). An arc-shaped sliding groove (1401) is provided on the concave connecting plate (14). A wear-resistant bushing (15) is fixedly connected to the inner side of the arc-shaped sliding groove (1401). The arc-shaped sliding groove (1401) and the sliding rod (13) are slidably connected. The arc-shaped sliding groove (1401) is used to limit the sliding trajectory of the sliding rod (13).

2. The automatic conveying equipment for a food filling production line according to claim 1, characterized in that: The conveying assembly includes a stepper motor (801) fixedly connected to the connecting frame (7), an active roller (802) fixedly connected to the output end of the stepper motor (801), two transmission rollers (803) rotatably connected to both ends of the connecting frame (7), and a conveyor belt (804) sleeved on the outside of the active roller (802) and the transmission roller (803). The stepper motor (801) is used to drive the active roller (802) to rotate, and the conveyor belt (804) is provided with several anti-slip patterns (8041).

3. An automatic conveying device for a food filling production line according to claim 2, characterized in that: The locking assembly includes an electromagnetic coil (1701) fixedly connected in the fixed sleeve (16), an armature (1702) slidably connected in the fixed sleeve (16), and a compression spring (1703) fixedly connected between the fixed sleeve (16) and the armature (1702). The armature (1702) and the locking pin (18) are fixedly connected. The electromagnetic coil (1701) generates an electromagnetic field through an external power supply to attract the armature (1702), thereby controlling the locking of the locking pin (18) to the positioning end rod (12).

4. An automatic conveying device for a food filling production line according to claim 3, characterized in that: Several arc-shaped card holders (19) are fixedly connected to the lower frame (2). A limiting component is provided on one side of the arc-shaped card holder (19). The limiting component is installed on the lower frame (2). The output end of the limiting component is connected to two symmetrical upper limit blocks (21). The limiting component is used to drive the two upper limit blocks (21) to move towards or away from each other.

5. An automatic conveying device for a food filling production line according to claim 4, characterized in that: The limiting component includes a stepper motor (2001) fixedly connected to the lower frame (2), a gear (2002) fixedly connected to the output end of the stepper motor (2001) via a shaft, two racks (2003) symmetrically meshed on both sides of the gear (2002), and a connecting frame (2004) fixedly connected to the rack (2003). The connecting frame (2004) is fixedly connected to the upper limit block (21). The stepper motor (2001) is used to drive the gear (2002) to rotate. Several sliding grooves (201) are provided on the lower frame (2). The sliding grooves (201) and the connecting frame (2004) are slidably connected.

6. An automatic conveying device for a food filling production line according to claim 5, characterized in that: Two symmetrical overlapping components are installed at both ends of the connecting frame (7). The output end of the overlapping component is connected to a flexible transfer plate (23). The overlapping component is used to drive the flexible transfer plate (23) to rotate. The overlapping assembly includes an electric push rod (2201) with one end rotatably connected to the connecting frame (7), a rotating ring (2202) rotatably connected to the connecting frame (7), and a connecting frame (2203) fixedly connected to the rotating ring (2202). The other end of the electric push rod (2201) is rotatably connected to the connecting frame (2203), and the connecting frame (2203) is fixedly connected to the flexible transfer plate (23).

7. An automatic conveying device for a food filling production line according to claim 6, characterized in that: A speed detector (24) is fixedly connected to the second connecting frame (2203). The speed detector (24) is used to detect the conveying speed of the short-distance conveyor belt (5) or the movable connecting plate (6) that is connected, and transmits the detection signal to the external controller to control the consistent conveying speed.

8. An automatic conveying device for a food filling production line according to claim 7, characterized in that: A mounting bracket (25) is fixedly connected to the connecting frame (7). A guide component is installed on the mounting bracket (25). The output end of the guide component is connected to two symmetrical connecting frames (27). The guide component is used to drive the two connecting frames (27) to move towards or away from each other. A guide plate (28) is fixedly connected to the connecting frame (27).

9. An automatic conveying device for a food filling production line according to claim 8, characterized in that: The guide assembly includes a stepper motor three (2601) fixedly connected to the mounting bracket (25), a threaded rod one (2602) fixedly connected to the output end of the stepper motor three (2601) at one end, a coupling (2603) fixedly connected to the other end of the threaded rod one (2602) at one end, and a threaded rod two (2604) fixedly connected to the other end of the coupling (2603) at one end. The threaded rod one (2602), the coupling (2603) and the threaded rod two (2604) are all rotatably connected to the mounting bracket (25). A connecting bracket three (27) is threadedly connected to the threaded rod one (2602) and the threaded rod two (2604) respectively. The stepper motor three (2601) is used to drive the threaded rod one (2602) to rotate.

10. An automated conveying method for a food filling production line, characterized in that: The automatic conveying equipment for a food filling production line according to claim 9 includes the following four working modes in its conveying method: Mode 1: Normal conveying between upper and lower levels; The upper frame (3) and the lower frame (2) remain parallel and horizontal. The long-distance conveyor belt (4), the short-distance conveyor belt (5) and the conveyor belt (804) on the connecting frame (7) operate independently. The movable connecting plate (6) is in the initial position. The workpiece is conveyed in a straight line along the horizontal direction on the long-distance conveyor belt (4) and the short-distance conveyor belt (5). Mode 2: Staggered conveying between upper and lower layers; By moving the upper frame (3) to make it horizontally offset relative to the lower frame (2), the movable connecting plate (6) rotates to adapt to the offset angle, thereby realizing the position offset of the upper and lower conveyor belts so that the external robotic arm can insert and grab the workpiece. At this time, the electric push rod (10) does not start, and the connecting frame (7) remains horizontal. Mode 3: The upper-level workpiece is transported to the lower level; The end of the connecting frame (7) closest to the conveying direction is locked by the locking assembly. The electromagnetic coil (1701) is de-energized, and the compression spring (1703) pushes the armature (1702), causing the locking pin (18) to pass through the locking through hole (1201) and the locking hole (302), locking the positioning end rod (12) onto the upper frame (3). The other end of the connecting frame (7) furthest from the conveying direction is not locked. The electric push rod (10) is activated, and its output end drives the hinge joint (11) to move vertically. The hinge joint (11) drives the hinge seat (9) to rotate, thereby driving that end of the connecting frame (7) to descend, and the slide rod (13) The slide down along the arc-shaped groove (1401) of the concave connecting plate (14) to the arc-shaped card seat (19). The stepper motor (2001) drives the gear (2002) to rotate, which drives the two racks (2003) to move towards each other. The racks (2003) drive the two upper limit blocks (21) to move towards each other through the connecting frame (2004), which limits and locks the slide rod (13) in the arc-shaped card seat (19), forming an inclined transfer channel from top to bottom. The workpiece is transported from the short-distance conveyor belt (5) of the upper frame (3) to the long-distance conveyor belt (4) of the lower frame (2) along the inclined direction via the conveyor belt (804). Mode 4: Lower layer workpieces are transported to upper layer; The end of the connecting frame (7) closest to the conveying direction is locked by a locking component, in the same way as in mode three. The other end of the connecting frame (7) furthest from the conveying direction is not locked. The electric push rod (10) is activated, and its output end drives the hinge joint (11) to move vertically. The hinge joint (11) drives the hinge seat (9) to rotate, thereby driving that end of the connecting frame (7) to rise. The slide rod (13) slides upward along the arc-shaped groove (1401) of the concave connecting plate (14) to the arc-shaped card seat (19) on the other side. The limiting component limits and locks the slide rod (13) in the same way as in mode three, forming a reverse inclined transfer channel from bottom to top. The workpiece is conveyed from the long-distance conveyor belt (4) of the lower frame (2) to the upper frame (3) via the conveyor belt (804) in an inclined direction. In modes three and four, after the connecting frame (7) moves into position, the speed detector (24) detects the conveying speed of the short-distance conveyor belt (5) or the movable connecting plate (6) that is overlapped, and transmits the detection signal to the external controller. The controller controls the rotation speed of the stepper motor (801) so that the linear speed of the conveyor belt (804) is consistent with the speed of the overlapped conveyor belt. At the same time, the electric push rod (2201) starts and drives the connecting frame (2203) to rotate around the rotating ring (2202), which drives the flexible transfer plate (23) to rotate to the overlap position, completing the flexible transfer of the workpiece between the conveyor belts. The stepper motor (2601) synchronously drives the guide plate (28) to adjust the width and guide the workpiece to enter or leave the conveyor belt (804) in the correct direction.

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