A rice stacking and conveying device capable of preventing packaging bags from falling off

Abstract

The present application relates to warehouse logistics technical field, specifically, it relates to a kind of rice stacking conveying equipment of preventing packing bag from falling off, including several vertical beams, several baffles fixedly installed in the outer wall of adjacent vertical beam, support plate slidingly installed in several vertical beams, conveying roller for carrying tray is set to the top of support plate, drive assembly for controlling the lifting of support plate is set to the bottom of support plate, and the specification of support plate is compatible with the specification of support plate, in the conveying state, support plate is at the first height, in the stacking state, with the layer of stacking gradually increasing, drive assembly controls support plate to gradually drop, so that several baffles are always around the rice bag at the highest place four around.This equipment effectively avoids that rice bag loses lateral support and slides or collapses in the process of free-fall stacking, guarantees the stability of stacking process.

Description

Technical Field

[0001] This invention relates to the field of warehousing and logistics technology, and more specifically, to a rice palletizing and conveying device that prevents packaging bags from falling off. Background Technology

[0002] With the increasing automation in the grain processing industry, automated equipment has been widely used to replace manual handling in the end-of-line palletizing stage of rice production lines. Existing rice palletizing and conveying equipment typically uses robotic arms or specialized grippers to pick up rice bags from the conveyor line and stack them according to a preset pallet pattern.

[0003] Because rice bags are flexible packaging, their shape is unpredictable and they are prone to deformation during stacking. When the gripper removes the bags, it is highly susceptible to jamming. Therefore, to avoid mechanical interference between the gripper and the stacked rice bags, existing technology requires the gripper to release its gripper at a certain height above the rice pile, allowing gravity to allow the bags to fall naturally to the top. While this non-contact dropping method effectively solves the problems of gripper jamming and interference, it also introduces significant new issues: upon contact with the rice pile, the impact force and the shift in the bag's center of gravity can easily cause it to slide, roll, or bounce, making it difficult for the bag to stay in the intended position. It may even slide directly off the edge of the pile, causing the stack to collapse and increasing the difficulty of subsequent handling. Summary of the Invention

[0004] This invention provides a rice stacking and conveying device to prevent packaging bags from falling off. The device uses a drive component to control the support plate to descend step by step with the stacking layers based on the weight detected by the weighing device. This ensures that the baffle always surrounds the rice bags at the top layer for protection. In addition, a visual inspection and a pusher mechanism are used to correct the position of the rice bags, thereby solving the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides a rice palletizing and conveying device for preventing packaging bags from falling off, comprising several vertical beams, several baffles fixedly installed on the outer walls of adjacent vertical beams, a support plate slidably installed inside the several vertical beams, a conveying roller disposed on the top of the support plate for carrying the pallet, and a drive assembly disposed on the bottom of the support plate for controlling the lifting and lowering of the support plate, wherein the specifications of the support plate are adapted to the specifications of the pallet.

[0006] In the above technical solution, in the conveying state, the support plate is at the first height. In the stacking state, as the number of stacking layers increases, the drive component controls the support plate to descend step by step so that several baffles always surround the rice bag set at the highest point.

[0007] Based on the above, the drive assembly includes a base plate disposed at the bottom of the support plate, a weighing device fixedly installed between the support plate and the base plate, a base fixedly installed at the bottom end of the vertical beam, a multi-stage telescopic cylinder fixedly installed on the top surface of the base, and a controller disposed at the top of the base, wherein the movable end of the multi-stage telescopic cylinder is fixedly connected to the bottom surface of the base plate.

[0008] A vision detector is fixedly installed at the top of one of the vertical beams, a fixing frame is fixedly installed on the outer wall of the baffle, an electric push rod is fixedly installed on the inner wall of the fixing frame, a push plate is fixedly installed at the movable end of the electric push rod, and a through groove is provided on the outer wall of the baffle for the push plate to pass through.

[0009] Each of the two opposing fixed frames has a sliding plate slidably installed inside. An extrusion roller is rotatably installed at the end of the sliding plate, and the sliding plate is located at the bottom of the push plate.

[0010] A threaded rod is rotatably mounted on the inner wall of the fixed frame, and a first movable block is threadedly connected to the outer wall of the threaded rod. A guide rod is fixedly mounted on the inner wall of the fixed frame, and a second movable block is slidably mounted on the wall of the guide rod. The outer wall of the first movable block is fixedly connected to the bottom surface of the slide plate, and the outer wall of the second movable block is fixedly connected to the bottom surface of the slide plate.

[0011] Motors are fixedly installed on the outer walls of both of the fixing frames, and the output shaft of the motor is fixedly connected to the end of the threaded rod.

[0012] The top surface of the skateboard is provided with a low-friction coating.

[0013] The pusher plate is provided in four parts, and the four pusher plates are evenly distributed around the support plate.

[0014] The rice palletizing and conveying equipment also includes a pallet conveyor on one side of the vertical beam, a pallet output machine on the other side of the vertical beam, a gripper robot on the outside of the vertical beam, and a rice bag conveyor on the side of the gripper robot away from the pallet conveyor.

[0015] When the support plate is at the first height, the height of the conveyor roller is equal to the height of the conveyor roller of the pallet conveyor.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: In this rice palletizing and conveying equipment designed to prevent packaging bags from falling off, the drive assembly calculates the number of stacking layers based on weight data detected by a weighing device. It then controls multi-stage telescopic cylinders to lower the support plates step by step as the stacking layers increase. Combined with fixedly installed baffles, this ensures that the highest rice bags are always within the protective range of the baffles. This effectively prevents the rice bags from slipping or collapsing due to loss of lateral support during free-fall stacking caused by changes in stacking height, thus guaranteeing the stability of the stacking process.

[0017] 2. In this rice stacking and conveying equipment designed to prevent packaging bags from falling off, a visual detector identifies rice bag skew. First, a motor-driven threaded rod moves a sliding plate and compression rollers to insert between the layers of rice bags, breaking the static friction. Then, a pusher plate pushes and corrects the bag position, achieving efficient adjustment without damaging the packaging. This enables automatic shaping and correction of stacked rice bags, ensuring neat and standardized stacks and reducing transportation risks caused by uneven stacking. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the installation of the vertical beam in this invention; Figure 3 This is a schematic diagram showing the position of the baffle in this invention; Figure 4 This is a schematic diagram showing the position of the fixing frame in this invention; Figure 5 This is a schematic diagram of the installation of the multi-stage telescopic cylinder in this invention; Figure 6 For the present invention Figure 5 Enlarged structural diagram at point A in the middle; Figure 7 This is a schematic diagram of the installation of the weighing device in this invention; Figure 8 This is a schematic diagram of the installation of the guide rod in this invention; Figure 9 This is a schematic diagram showing the state of the first stack layer of the present invention. Figure 10 This is a schematic diagram illustrating the state of the present invention when the position of the upper rice bag needs to be adjusted; Figure 11 This is a schematic diagram showing the state of the support plate returning to the conveying position in this invention.

[0019] The meanings of the labels in the diagram are as follows: 100. Vertical beam; 101. Baffle; 102. Fixing frame; 103. Base; 104. Multi-stage telescopic cylinder; 105. Support plate; 106. Conveyor roller; 107. Base plate; 108. Weighing device; 200. Electric push rod; 201. Push plate; 202. Through slot; 203. Slide plate; 204. Extrusion roller; 205. Threaded rod; 206. First movable block; 207. Motor; 208. Guide rod; 209. Second movable block; 210. Vision detector; 300. Pallet conveyor; 301. Pallet output machine; 302. Gripper robot; 303. Rice bag conveyor. Detailed Implementation

[0020] The technical solutions of this invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this invention, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention.

[0021] Example 1, Reference Figure 4 and Figure 5 As shown, the present invention discloses a rice palletizing and conveying device to prevent packaging bags from falling off, including several vertical beams 100, several baffles 101 fixedly installed on the outer wall of adjacent vertical beams 100, a support plate 105 slidably installed inside the several vertical beams 100, a conveying roller 106 disposed on the top of the support plate 105 for carrying the pallet, and a drive assembly disposed on the bottom of the support plate 105 for controlling the lifting and lowering of the support plate 105, wherein the specifications of the support plate 105 are adapted to the specifications of the pallet.

[0022] It should be noted that several vertical beams 100 constitute the main support frame of the equipment, providing a stable structural foundation for the entire stacking process. Baffles 101 are fixed to the vertical beams 100, enclosing a relatively closed stacking space. These baffles are primarily used to limit the lateral movement of the rice bags during stacking, preventing lateral slippage or collapse. The sliding installation of the support plate 105 inside the vertical beams 100 ensures the smoothness of the lifting process, while the conveyor rollers 106 located on top of the support plate can rotate autonomously, allowing pallets to move in and out of the support plate 105.

[0023] In the conveying state, the support plate 105 is at the first height. In the stacking state, as the number of stacking layers increases, the drive component controls the support plate 105 to descend step by step so that several baffles 101 always surround the rice bag set at the highest point.

[0024] Specifically, when the support plate 105 is at the first height, it is to connect with the upstream pallet conveyor 300 and the downstream pallet output machine 301 to facilitate the smooth transfer of the pallet onto the conveyor roller 106.

[0025] During the stacking process, as the rice bags are continuously stacked, the overall height gradually increases. By controlling the support plate 105 to descend step by step, it can be ensured that the top layer of rice bags being stacked is always within the protective range enclosed by the baffle 101. That is, the fixed baffle 101 always effectively restrains the upper part of the rice bag stack, thereby preventing the top layer of rice bags from losing lateral support and slipping due to excessive stacking.

[0026] Combination Figure 5The drive assembly includes a base plate 107 disposed at the bottom of the support plate 105, a weighing device 108 fixedly installed between the support plate 105 and the base plate 107, a base 103 fixedly installed at the bottom of the vertical beam 100, a multi-stage telescopic cylinder 104 fixedly installed on the top surface of the base 103, and a controller disposed on the top of the base 103, wherein the movable end of the multi-stage telescopic cylinder 104 is fixedly connected to the bottom surface of the base plate 107.

[0027] Furthermore, the weighing device 108 includes a weighing sensor, which can monitor the total weight of the conveyor roller 106 above the support plate 105, the pallet, and the rice bags in real time, and feed the data back to the controller. Based on the received weight data and the standard weight of a single rice bag, the controller calculates the current number of rice bags stacked and the number of layers, and then sends control commands to the multi-stage telescopic cylinder 104. The multi-stage telescopic cylinder 104 has a large stroke and can precisely lift and lower the base plate 107 and the support plate 105 according to the controller's commands, thereby achieving the function of automatically adjusting the height of the support plate 105 according to the stacking height.

[0028] Combined Figure 4 and Figure 6 As shown, a vision detector 210 is fixedly installed at the top of one of the vertical beams 100. A mounting bracket 102 is fixedly installed on the outer wall of the baffle 101. An electric push rod 200 is fixedly installed on the inner wall of the mounting bracket 102. A push plate 201 is fixedly installed at the movable end of the electric push rod 200. A through groove 202 is provided on the outer wall of the baffle 101 for the push plate 201 to pass through. In addition, the mounting bracket 102 provides support for the electric push rod 200.

[0029] The vision detector 210 includes a vision sensor. It is used to view the entire stacking area from above and acquire real-time images of the stacked rice bags to detect any misalignment or uneven stacking. When the vision detector 210 detects a misalignment, the electric push rod 200 is activated, pushing the push plate 201 to move. The push plate 201 extends through the slot 202 to the inside of the baffle 101, directly contacting and pushing the misaligned rice bag to correct it to the correct position. The slot 202 provides a channel for the push plate 201 to reciprocate. It should be noted that when the vision detector 210 detects a misalignment in a certain direction, it feeds the corresponding information back to the controller. Based on the received misalignment information, the controller controls the movable end of the electric push rod 200 in the corresponding direction to extend, thus correcting the misaligned rice bag to the correct position.

[0030] The two opposing fixed frames 102 each have a sliding plate 203 slidably installed inside. The end of the sliding plate 203 is rotatably mounted with a squeeze roller 204, and the sliding plate 203 is located at the bottom of the push plate 201.

[0031] Furthermore, by controlling the relative sliding of the two sliding plates 203 and the squeezing roller 204, the squeezing roller 204 rolls on the surface of the rice bag, which allows the sliding plates 203 to be inserted between the top layer of rice bag and the next layer of rice bag, facilitating the adjustment of the position of the top layer of rice bag under the push of the push plate 201. When the squeezing roller 204 contacts the surface of the rice bag, it can convert the original sliding friction into rolling friction, effectively reducing the risk of wear and tear on the rice bag packaging material during equipment operation.

[0032] When the vision detector 210 detects that the top rice bag is tilted, the controller controls the two sliding plates 203 to move relative to each other before the pusher plate 201 moves. During this process, the squeezing roller 204 rolls close to the surface of the rice bag, and the guiding force generated by the rolling smoothly inserts the end of the sliding plate 203 into the gap between the top rice bag and the next layer of rice bag. This insertion action can effectively break the static friction adsorption force generated by the weight of the two layers of rice bags, causing local separation or loosening between the top and bottom rice bags. This significantly reduces the movement resistance of the top rice bag, which was originally tightly attached to the bottom rice bag, and puts it in a floating state that is easy to push, thus creating the necessary mechanical conditions for the pusher plate 201 to smoothly push the top rice bag to adjust its position.

[0033] Reference Figure 8 As shown, a threaded rod 205 is rotatably mounted on the inner wall of the fixing frame 102. A first movable block 206 is threadedly connected to the outer wall of the threaded rod 205. A guide rod 208 is fixedly mounted on the inner wall of the fixing frame 102. A second movable block 209 is slidably mounted on the wall of the guide rod 208. The outer wall of the first movable block 206 is fixedly connected to the bottom surface of the slide plate 203, and the outer wall of the second movable block 209 is fixedly connected to the bottom surface of the slide plate 203. Motors 207 are fixedly mounted on the outer walls of both fixing frames 102, and the output shaft of the motors 207 is fixedly connected to the end of the threaded rod 205.

[0034] When the threaded rod 205 rotates, it drives the first movable block 206 to move axially via the threaded transmission, thereby pulling or pushing the slide plate 203 to move. The guide rod 208, in conjunction with the second movable block 209, provides guidance and support for the movement of the slide plate 203, preventing the slide plate 203 from deflecting or wobbling during movement, and ensuring that the extrusion roller 204 can act smoothly and accurately on the rice bags. The motor 207, as the power source, provides driving force for the rotation of the threaded rod 205.

[0035] The top surface of the skateboard 203 is coated with a low-friction coating.

[0036] Furthermore, the low-friction coating is designed to further reduce the contact resistance between the rice bag and the leveling mechanism. This coating has an extremely low coefficient of friction. When the pusher plate 201 pushes and presses the rice bag, the low-friction coating allows the rice bag to slide more easily, preventing it from being torn or damaged due to excessive friction, while also reducing energy consumption during equipment operation.

[0037] Four push plates 201 are provided, and the four push plates 201 are evenly distributed around the pallet. The four push plates 201 are distributed in the four side directions of the pallet respectively.

[0038] Combination Figure 1 and Figure 2 As shown, the rice palletizing and conveying equipment also includes a pallet conveyor 300 located on one side of the vertical beam 100, a pallet output machine 301 located on the other side of the vertical beam 100, a gripper robot 302 located outside the vertical beam 100, and a rice bag conveyor 303 located on the side of the gripper robot 302 away from the pallet conveyor 300. When the support plate 105 is at the first height, the height of the conveyor roller 106 is equal to the height of the conveyor roller of the pallet conveyor 300.

[0039] Specifically, the pallet conveyor 300 automatically transports empty pallets to the support plate 105 at a first height, while the rice bag conveyor 303 transports packaged rice bags to a designated location. The gripper robot 302 picks up rice bags from the rice bag conveyor 303 and transfers them to the pallets on the support plate 105 for stacking. Once stacking is complete, the pallet output machine 301 transports the pallet carrying the full stack of rice bags out of the stacking station, thus forming a complete automated production line operation.

[0040] Working principle: First, during the feeding stage, the drive assembly controls the support plate 105 to rise to a first height, aligning the top conveyor roller 106 with the height of the pallet conveyor 300, thereby smoothly conveying the empty pallet onto the support plate 105. Subsequently, the gripper robot 302 grabs rice bags from the rice bag conveyor 303 and transports them above the pallet for free-fall stacking.

[0041] During the stacking process, the weighing device 108 monitors the total weight of the rice bags on the pallet in real time and feeds the data back to the controller. The controller calculates the number of stacked layers of rice bags based on the weight and controls the multi-stage telescopic cylinder 104 to drive the support plate 105 to descend step by step, ensuring that the top layer of rice bags being stacked is always within the protective range enclosed by the fixed baffle 101, and using the baffle 101 to continuously limit the lateral movement of the rice bags.

[0042] Meanwhile, to correct the position of the rice bags, the vision detector 210 provides a real-time overview of the stacking area. When a misalignment of the top layer of rice bags is detected, the controller first controls the motor 207 to drive the threaded rod 205 to rotate, causing the sliding plate 203 and its end-mounted squeezing roller 204 to move relative to each other. The squeezing roller 204 uses rolling friction to insert the sliding plate 203 between the top layer and the next layer of rice bags, breaking the static friction between the two layers and making the top layer of rice bags in a floating state that is easy to move. Immediately afterwards, the electric push rod 200 in the corresponding direction pushes the push plate 201 through the through slot 202, applying a pushing force to the rice bags in the corresponding direction and correcting them to the correct position. The low-friction coating design effectively reduces resistance and wear during this process. Finally, after stacking is completed, the conveyor roller 106, in conjunction with the pallet output machine 301, transports the pallet carrying the full stack of rice bags out of the workstation.

[0043] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A rice palletizing and conveying device to prevent packaging bags from falling off, characterized in that: It includes several vertical beams (100), several baffles (101) fixedly installed on the outer wall of adjacent vertical beams (100), a support plate (105) slidably installed inside several vertical beams (100), a conveyor roller (106) set on the top of the support plate (105) for carrying the pallet, and a drive assembly set on the bottom of the support plate (105) for controlling the lifting of the support plate (105), and the specifications of the support plate (105) are compatible with the specifications of the pallet; In the conveying state, the support plate (105) is at the first height. In the stacking state, as the number of stacking layers increases, the drive component controls the support plate (105) to descend step by step so that several baffles (101) always surround the rice bag set at the highest point.

2. The rice palletizing and conveying equipment according to claim 1, characterized in that: The drive assembly includes a base plate (107) disposed at the bottom of the support plate (105), a weighing device (108) fixedly installed between the support plate (105) and the base plate (107), a base (103) fixedly installed at the bottom end of the vertical beam (100), a multi-stage telescopic cylinder (104) fixedly installed on the top surface of the base (103), and a controller disposed on the top of the base (103), wherein the movable end of the multi-stage telescopic cylinder (104) is fixedly connected to the bottom surface of the base plate (107).

3. The rice palletizing and conveying equipment according to claim 2, characterized in that: A visual detector (210) is fixedly installed at the top of one of the vertical beams (100), a fixing frame (102) is fixedly installed on the outer wall of the baffle (101), an electric push rod (200) is fixedly installed on the inner wall of the fixing frame (102), a push plate (201) is fixedly installed at the movable end of the electric push rod (200), and a through groove (202) is provided on the outer wall of the baffle (101) for the push plate (201) to pass through.

4. The rice palletizing and conveying equipment according to claim 3, characterized in that: Each of the two opposing fixed frames (102) has a sliding plate (203) slidably installed inside. The end of the sliding plate (203) is rotatably mounted with a squeeze roller (204), and the sliding plate (203) is located at the bottom of the push plate (201).

5. The rice palletizing and conveying equipment according to claim 4, characterized in that: A threaded rod (205) is rotatably mounted on the inner wall of the fixed frame (102). A first movable block (206) is threadedly connected to the outer wall of the threaded rod (205). A guide rod (208) is fixedly mounted on the inner wall of the fixed frame (102). A second movable block (209) is slidably mounted on the wall of the guide rod (208). The outer wall of the first movable block (206) is fixedly connected to the bottom surface of the slide plate (203), and the outer wall of the second movable block (209) is fixedly connected to the bottom surface of the slide plate (203).

6. The rice palletizing and conveying equipment according to claim 5, characterized in that: Motors (207) are fixedly installed on the outer walls of both of the aforementioned fixtures (102), and the output shaft of the motor (207) is fixedly connected to the end of the threaded rod (205).

7. The rice palletizing and conveying equipment according to claim 4, characterized in that: The top surface of the skateboard (203) is provided with a low-friction coating.

8. The rice palletizing and conveying equipment according to claim 3, characterized in that: There are four push plates (201), and the four push plates (201) are evenly arranged around the support plate.

9. The rice palletizing and conveying equipment according to claim 1, characterized in that: It also includes a pallet conveyor (300) located on one side of the vertical beam (100), a pallet output machine (301) located on the other side of the vertical beam (100), a gripper robot (302) located outside the vertical beam (100), and a rice bag conveyor (303) located on the side of the gripper robot (302) away from the pallet conveyor (300).

10. The rice palletizing and conveying equipment according to claim 9, characterized in that: When the support plate (105) is at the first height, the height of the conveyor roller (106) is equal to the height of the conveyor roller of the pallet conveyor (300).

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