Suction box conveyor mechanism

Abstract

This utility model discloses a box-feeding conveying mechanism, belonging to the field of packaging machinery technology. It aims to solve the problems of existing box-feeding mechanisms, such as high pressure on the lower layer of boxes, easy failure of the baffle plate, frequent multiple box ejections, and poor feeding stability. This utility model includes a frame, a conveyor belt, and a feeding trough. The feeding trough is surrounded by insert rods and has a baffle plate at the bottom. A liftable lifting plate is located below the frame, driven by a lifting cylinder. Symmetrical suction rods corresponding to each feeding trough are mounted on the lifting plate, connected to a vacuum pump and a solenoid valve. Pushing cylinders and clamping blocks are mounted on the inclined plates on both sides of the feeding trough. The clamping blocks are located in the middle of the feeding trough and have anti-slip teeth on their end faces. This utility model uses clamping blocks to bear the pressure of stacked boxes, share the load of the baffle plate, and prevent boxes from falling off. The double suction rods provide precise single-sheet feeding under negative pressure, eliminating the problem of multiple boxes being ejected. The box feeding is accurate and the conveying is stable. Simultaneous operation at multiple stations can improve packaging feeding efficiency. It is suitable for use in automated packaging production lines and has strong practicality.

Description

Technical Field

[0001] This utility model belongs to the field of packaging machinery technology, specifically relating to a suction box conveying mechanism. Background Technology

[0002] In automated packaging production lines, cardboard boxes, as material carriers, need to be continuously, stably, and individually conveyed to the conveyor belt station to ensure the continuous operation of subsequent material filling, sealing, and other processes. Currently, the mainstream cardboard box feeding and conveying structure in the industry mainly adopts a working mode of stacked storage in a trough and single-point suction cup adsorption for discharging. That is, the entire stack of cardboard boxes is vertically stacked inside a fixed trough, relying on the bottom baffle plate of the trough to support the weight of the entire stack of cardboard boxes, and then the bottom cardboard box is grabbed by the top suction cup and transferred to the conveyor belt to complete the feeding.

[0003] The existing technology has significant drawbacks in practical applications: First, the stacked cardboard boxes are quite tall, and the lower cardboard boxes have to bear the weight of all the upper cardboard boxes. Long-term pressure can easily cause deformation and bending. At the same time, the baffle plate at the material trough outlet is continuously subjected to large vertical pressure, which is heavy and easily wears and deforms, causing the baffle plate to fail to limit the movement. The bottom cardboard boxes can easily detach from the material trough, resulting in leakage and misalignment. Second, traditional suction cups are mostly single-point adsorption structures. When grabbing the bottom cardboard boxes, uneven adsorption force and pressure from the upper cardboard boxes can cause them to stick together, resulting in two or more cardboard boxes being pulled out at once, leading to stacking and multiple material discharge failures. Third, the cardboard box discharge stability is poor and the discharge accuracy is low. Frequent feeding failures can directly interrupt the packaging production line operation, significantly reducing the overall packaging efficiency, increasing the frequency of equipment downtime for maintenance and production costs, and failing to meet the production requirements of high-speed, high-precision automated packaging.

[0004] In view of the technical defects of the existing technology, such as poor stability, high failure rate and weak adaptability, there is an urgent need to optimize the design of a paper box suction and conveying mechanism with reasonable structure, accurate material output and stable pressure resistance. Utility Model Content

[0005] This utility model aims to solve the technical problems in existing paper box conveying mechanisms, such as excessive pressure on the lower layer of stacked paper boxes, high load on the baffle plate leading to easy failure, easy paper boxes falling off on their own, and multiple boxes being carried out during discharge, resulting in poor discharge stability. It also solves the problems of low feeding accuracy and high failure rate of traditional mechanisms, which seriously affect the efficiency of automated packaging production lines.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a box-feeding and conveying mechanism, including a frame, on which a conveyor belt arranged in a ring is provided, and several partitions are uniformly fixed on the surface of the conveyor belt, forming a compartment for placing paper boxes between two adjacent partitions, and several sequentially arranged feeding troughs are fixed above the frame, the conveyor belt is driven by a drive motor and passes under the bottom outlet of the feeding trough, the feeding trough is formed by multiple insert rods, and baffles are symmetrically installed at the bottom outlet of the feeding trough.

[0007] A vertically movable lifting plate is installed on the frame below the feeding trough. The lifting plate is connected to a lifting cylinder for driving its vertical lifting. Suction components are installed on the lifting plate corresponding to each feeding trough. Each suction component includes two symmetrically arranged suction rods. A passage gap is reserved between the two suction rods corresponding to the feeding trough, through which the conveyor belt passes. The suction rods are connected to a vacuum pump via a solenoid valve. Inclined plates are fixed on both sides of the feeding trough. Pushing cylinders are installed on the inclined plates. A clamping block is fixed to the piston rod end of the pushing cylinder. The clamping blocks on both sides are located at the middle of the feeding trough. The end face of the clamping block facing the feeding trough is a vertical surface. Vertical anti-slip protrusions and clearance grooves corresponding to the insertion rods are provided on the vertical surface. When the clamping block is in contact with the side wall of the cardboard stack, the insertion rod is adapted to be embedded in the clearance groove.

[0008] Furthermore, the number of the feeding troughs is set to four, and the four feeding troughs are arranged in a straight line at equal intervals. The lifting plate is equipped with four sets of suction rod assemblies corresponding to the four feeding troughs. The four sets of suction rod assemblies are driven vertically by the same lifting cylinder.

[0009] Furthermore, the inclined plate is fixed at an angle to the lower part of the outer side wall of the feeding trough, the pushing cylinder is fixed horizontally to the surface of the inclined plate, and the extension and retraction direction of the pushing cylinder is set perpendicular to the side wall of the feeding trough.

[0010] Furthermore, the anti-slip protrusions are made of hard, wear-resistant rubber, and multiple sets of the anti-slip protrusions are distributed in a vertical array at equal intervals on the vertical contact end face of the clamping block.

[0011] Furthermore, the clearance groove is a vertical through groove, the groove width is greater than the rod diameter of the insert rod, and the clearance groove and the insert rod are fitted with a clearance.

[0012] Furthermore, a vertical guide rail is fixed on the frame, the lifting plate is slidably mounted on the vertical guide rail, the cylinder body of the lifting cylinder is fixed to the bottom of the frame, and the top of the piston rod is fixedly connected to the center of the bottom surface of the lifting plate.

[0013] Furthermore, the bottom end of each set of suction rods is an adsorption end face, which is set to fit against the top surface of the paper box, and the two suction rods in the same set are symmetrically distributed on both sides of the bottom outlet of the feeding trough.

[0014] Furthermore, the frame is also equipped with a controller and a material sensor. The material sensor is installed on the insertion rod and near the outlet of the discharge chute. When the material sensor detects a lack of material, it sends a signal to the controller, which controls the push cylinder to retract, thereby controlling the two clamping blocks to release.

[0015] In terms of technical effects, compared with the prior art, the present invention has the following beneficial technical effects: 1. This utility model adds a mid-waist clamping and limiting structure. The clamping blocks are driven by the push cylinders on both sides to fit against the upper side wall of the stacked paper boxes. The clamping blocks bear the self-weight pressure of the upper paper boxes, which greatly reduces the pressure load on the bottom baffle of the feeding trough. This effectively avoids the problem of the lower paper boxes being deformed by long-term pressure and the baffle being worn and failed by pressure. It prevents the paper boxes from falling out of the feeding trough on their own from the root and improves the stability of material storage.

[0016] 2. The end face of the clamping block is equipped with anti-slip protrusions, which can greatly improve the friction between the clamping block and the side wall of the cardboard box, and prevent the stacked cardboard boxes from sliding and misaligning; at the same time, a clearance groove is set to adapt to the insertion rod structure, so as to avoid structural interference between the clamping action and the insertion rod of the material discharge groove, ensuring smooth and stable clamping and limiting action, and stronger structural adaptability.

[0017] 3. It adopts a lifting double suction rod synchronous adsorption and discharge structure. The lifting cylinder drives the suction rod to accurately fit the bottom of the paper box at the bottom of the material tank. After negative pressure adsorption, it moves down smoothly and drags the paper box out. The dual-point symmetrical adsorption has uniform force and can accurately remove paper boxes one by one. It completely eliminates the fault of traditional discharge structure that easily brings out multiple small boxes, and the discharge accuracy is significantly improved.

[0018] 4. The conveyor belt travels between the gaps of the two sets of suction rods, and the cardboard boxes that have been suctioned and moved down can fall precisely into the compartments of the conveyor belt, achieving precise alignment and conveying of the cardboard boxes. With the multi-station synchronous feeding trough structure, multiple sets of cardboard boxes can be fed and conveyed simultaneously, greatly improving the efficiency of packaging feeding and ensuring the continuous and stable operation of subsequent packaging processes.

[0019] 5. The overall structure has strong linkage and low failure rate, eliminating the need for frequent maintenance and debugging, effectively reducing equipment operation and maintenance costs, adapting to the operational needs of high-speed automated packaging production lines, and possessing excellent practicality and versatility.

[0020] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. Attached Figure Description

[0021] Figure 1 This is a perspective view of a specific embodiment of the present utility model; Figure 2 This is a partial cross-sectional view of a specific embodiment of the present utility model; Figure 3 This is a partial perspective view of a specific embodiment of the present utility model; Figure 4 for Figure 1 Enlarged view of point A in the middle.

[0022] Explanation of reference numerals in the attached drawings: 1. Frame; 2. Conveyor belt; 3. Partition; 4. Grid bin; 5. Feed chute; 6. Insert rod; 7. Baffle plate; 8. Lifting plate; 9. Lifting cylinder; 10. Suction rod; 11. Inclined plate; 12. Pushing cylinder; 13. Clamping block; 14. Anti-slip teeth; 15. Relief groove. Detailed Implementation

[0023] The present invention will be described in detail below through embodiments, which are only used to further illustrate the present invention and should not be construed as limiting the scope of protection of the present invention.

[0024] like Figure 1 — Figure 4 As shown, this embodiment discloses a cardboard box conveying mechanism, including a frame 1. The frame 1 serves as the overall supporting foundation structure for fixing and installing various functional components. A conveyor belt 2 arranged in a ring around the frame 1 is mounted on the frame 1. The conveyor belt 2 is powered by a dedicated drive motor to achieve continuous cyclic operation. Several partitions 3 are uniformly fixedly installed on the outer surface of the conveyor belt 2. All partitions 3 are arranged at equal intervals along the conveying direction of the conveyor belt 2. Adjacent partitions 3 form independent compartments 4. The compartments 4 are used to individually receive and limit the movement of a single cardboard box, preventing the cardboard boxes from shifting or stacking during the conveying process.

[0025] Four feeding troughs 5 are fixedly installed on the top of the frame 1, arranged in a straight line at equal intervals. The feeding troughs 5 are used to vertically stack and store the cartons to be conveyed. The conveying path of the conveyor belt 2 runs through the bottom outlet of all the feeding troughs 5, ensuring that the cartons can fall directly into the compartment 4 of the conveyor belt 2 after being discharged. The feeding troughs 5 are formed by multiple vertically arranged inserts 6 to form a hollow storage structure, which can not only stably limit the stacked cartons, but also reduce the contact friction between the cartons and the feeding troughs. The bottom outlet of the feeding troughs 5 is symmetrically fixedly installed with baffles 7. Under normal conditions, the baffles 7 limit the bottom of the stacked cartons to prevent the cartons from falling off on their own.

[0026] A horizontally arranged lifting plate 8 is installed on the frame 1, below all the material feeding troughs 5. A vertical guide rail is fixedly installed on the frame 1, and the lifting plate 8 is slidably mounted on the vertical guide rail to achieve precise vertical guidance and movement, avoiding deviation and jamming during the lifting process. A lifting cylinder 9 is fixedly installed at the bottom of the frame 1. The top of the piston rod of the lifting cylinder 9 is fixedly connected to the center of the bottom surface of the lifting plate 8. The lifting plate 8 is driven to move vertically as a whole by the extension and retraction of the lifting cylinder 9.

[0027] Each of the four feeding slots 5 on the lifting plate 8 is equipped with a set of suction components. Each set of suction components includes two symmetrically arranged suction rods 10, meaning that the four sets, totaling eight suction rods 10, are synchronously fixed on the lifting plate 8 and driven to rise and fall synchronously by the same lifting cylinder 9. A passage gap is reserved between the two suction rods 10 corresponding to the same feeding slot 5, through which the conveyor belt 2 passes without structural interference. The bottom end of the suction rod 10 is a flat adsorption end face, used to adhere to the top surface of the cardboard box. All suction rods 10 are connected to solenoid valves through pipelines. The solenoid valves are connected to an external air pump. The negative pressure of the air pump, in conjunction with the opening and closing of the solenoid valves, realizes the switching of the suction rod 10's adsorption and release actions.

[0028] Each feeding trough 5 has a symmetrical inclined plate 11 fixedly installed on both sides. The inclined plate 11 is fixedly positioned at the lower part of the outer side wall of the feeding trough 5. A push cylinder 12 is fixedly installed horizontally on the surface of the inclined plate 11. The extension and retraction direction of the push cylinder 12 is perpendicular to the side wall of the feeding trough 5. A clamping block 13 is fixedly connected to the end of the piston rod of the push cylinder 12. The clamping blocks 13 on both sides are arranged at the middle waist position of the feeding trough 5, which can clamp and limit the upper middle side wall of the stacked cardboard boxes.

[0029] The clamping block 13 has a vertical contact end face facing the feeding groove 5. This vertical end face is provided with anti-slip protrusions 14 arranged in a vertically evenly spaced array. The anti-slip protrusions 14 are made of hard and wear-resistant rubber material, which can effectively increase the friction with the side wall of the carton and prevent the stacked cartons from sliding or misaligning vertically. At the same time, the vertical end face is provided with vertical clearance grooves 15 that correspond one-to-one with the insertion rods 6 of the feeding groove 5. The clearance grooves 15 are set as vertical through grooves, and the groove width is slightly larger than the rod diameter of the insertion rod 6. When the pushing cylinder 12 drives the clamping block 13 to contact the side wall of the carton stack, the insertion rod 6 can be accurately embedded in the clearance groove 15, completely avoiding structural interference and ensuring smooth clamping action.

[0030] The frame is also equipped with a controller and a material sensor. The material sensor is installed on the insertion rod and near the outlet of the discharge chute. When the material sensor detects a lack of material, it sends a signal to the controller. The controller controls the push cylinder to retract, which in turn controls the two clamping blocks to release.

[0031] The specific working process of this utility model is as follows: When the equipment is running, the manual stack of paper boxes is placed vertically inside each feeding slot 5. Under normal conditions, the push cylinder 12 is kept in the extended state, driving the clamping blocks 13 on both sides to clamp the middle side wall of the stacked paper boxes. The clamping blocks 13 bear the weight of the upper paper boxes and share the pressure load of the bottom baffle plate 7. At the same time, the anti-slip teeth 14 lock the position of the paper boxes to prevent the paper boxes from sliding and loosening.

[0032] When material needs to be conveyed out, the lifting cylinder 9 drives the lifting plate 8 to move upward as a whole, causing each set of suction rods 10 to rise synchronously. This ensures that the suction end face of the suction rod 10 is in close contact with the top surface of the bottommost cardboard box at the bottom of the discharge trough 5. The vacuum pump works to create negative pressure, which firmly adsorbs the bottom cardboard box through the suction rods 10. Subsequently, the lifting cylinder 9 drives the lifting plate 8 to move downward smoothly, dragging the adsorbed cardboard box away from the stacked cardboard box group and out of the bottom outlet of the discharge trough 5. The stacked cardboard boxes above are held in place by the clamping block 13, using friction to support all the cardboard boxes on top, reducing the weight pressure at the bottom of the paper stack. This prevents the bottom cardboard boxes from moving downward, completely avoiding the problem of multiple boxes being carried out.

[0033] When the suction rod rises and contacts the cardboard box, the solenoid valve opens, and the vacuum pump operates to create negative pressure. When the suction rod 10 moves the cardboard box down to the position of the conveyor belt 2, the solenoid valve disconnects the negative pressure path, and the cardboard box falls into the corresponding compartment 4 of the conveyor belt 2 by itself, completing the precise discharge of a single cardboard box. Alternatively, when the cardboard box is thick and the suction force is appropriate, the solenoid valve maintains negative pressure, and the conveyor belt's obstruction of the cardboard box causes it to detach from the suction rod and fall into the compartment. The conveyor belt 2 continues to operate, transporting the cardboard box to the next packaging station, repeating the above actions to achieve continuous, stable, and precise cardboard box suction and conveying operations.

[0034] As the cardboard box below clamping block 13 gradually decreases and moves down to one end, the material sensor detects this and controls another solenoid valve via the controller to drive the push cylinder to retract. The two clamping blocks release the cardboard boxes stacked above, and the stacked cardboard boxes fall to the bottom of the feeding trough. At the same time, the controller controls the alarm to sound a reminder to the worker to add material. After the material sensor detects the material, it controls the two clamping blocks to clamp the cardboard boxes again via the controller.

Claims

1. A box-feeding conveyor mechanism, comprising a frame (1), wherein a conveyor belt (2) arranged in a ring is provided on the frame (1), wherein a plurality of partitions (3) are uniformly fixed on the surface of the conveyor belt (2), and a compartment (4) for placing a paper box is formed between two adjacent partitions (3), wherein a plurality of feeding troughs (5) arranged in sequence are fixed above the frame (1), wherein the conveyor belt (2) is driven by a drive motor and passes under the bottom outlet of the feeding trough (5), wherein the feeding trough (5) is formed by a plurality of insert rods (6), and baffles (7) are symmetrically installed at the bottom outlet of the feeding trough (5), characterized in that: A vertically movable lifting plate (8) is provided on the frame (1) below the feeding trough (5). The lifting plate (8) is connected to a lifting cylinder (9) for driving its vertical lifting. A suction assembly is installed on the lifting plate (8) corresponding to each feeding trough (5). Each suction assembly includes two symmetrically arranged suction rods (10). A passage gap is reserved between the two suction rods (10) corresponding to the feeding trough (5). The conveyor belt (2) passes through the gap. The suction rods (10) are connected to the air pump through a solenoid valve. The two symmetrically arranged suction rods (10) on the left and right sides of the feeding trough (5) An inclined plate (11) is fixed on each side, and a push cylinder (12) is installed on the inclined plate (11). A clamping block (13) is fixed at the end of the piston rod of the push cylinder (12). The clamping blocks (13) on both sides are respectively located at the middle waist position of the discharge trough (5). A controller and a material sensor are also installed on the frame (1). The material sensor is located near the outlet position of the discharge trough (5). When the material sensor detects that the material is missing, it transmits a signal to the controller. The controller controls the push cylinder (12) to retract, and then controls the two clamping blocks (13) to release.

2. The suction box conveying mechanism according to claim 1, characterized in that: The end face of the clamping block (13) facing the feeding groove (5) is a vertical surface. The vertical surface is provided with anti-slip protrusions (14) arranged vertically and relief grooves (15) corresponding to the insertion rod (6). When the clamping block (13) is attached to the side wall of the paper box stack, the insertion rod (6) is adapted to be embedded in the relief groove (15).

3. The suction box conveying mechanism according to claim 1, characterized in that: The number of the feeding troughs (5) is set to four, and the four feeding troughs (5) are arranged in a straight line with equal spacing. The lifting plate (8) is equipped with four sets of suction rod assemblies corresponding to the four feeding troughs (5). The four sets of suction rod assemblies are driven vertically by the same lifting cylinder (9).

4. The suction box conveying mechanism according to claim 1, characterized in that: The inclined plate (11) is fixed at an angle to the lower part of the outer side wall of the feeding trough (5), and the pushing cylinder (12) is fixed horizontally to the plate surface of the inclined plate (11). The extension and retraction direction of the pushing cylinder (12) is perpendicular to the side wall of the feeding trough (5).

5. The suction box conveying mechanism according to claim 2, characterized in that: The anti-slip protrusions (14) are hard, wear-resistant rubber teeth, and multiple sets of the anti-slip protrusions (14) are arranged vertically at equal intervals on the vertical contact end face of the clamping block (13).

6. The suction box conveying mechanism according to claim 2, characterized in that: The clearance groove (15) is a vertical through groove. The width of the clearance groove (15) is greater than the diameter of the insert rod (6), and the clearance groove (15) and the insert rod (6) are fitted with a clearance.

7. The suction box conveying mechanism according to claim 1, characterized in that: A vertical guide rail is fixed on the frame (1), the lifting plate (8) is slidably mounted on the vertical guide rail, the cylinder body of the lifting cylinder (9) is fixed to the bottom of the frame (1), and the top of the piston rod is fixedly connected to the center of the bottom surface of the lifting plate (8).

8. The suction box conveying mechanism according to claim 1, characterized in that: The bottom end of each suction rod (10) is an adsorption end face, which is attached to the top surface of the paper box. The two suction rods (10) in the same group are symmetrically distributed on both sides of the bottom outlet of the feeding trough (5).

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