Conveyor for stations to be grabbed

Abstract

A plurality of rollers are arranged on the upper portion of a rack, square tenons at the ends of roller shafts at the two ends of each roller are embedded into open grooves in the upper ends of side wall plates of the rack respectively, a plurality of grabbing receding grooves with openings in the upper ends are formed in the upper ends of the two side wall plates of the rack, and the positions of the grabbing receding grooves correspond to neutral gears between the adjacent rollers; the end of one side of each roller is provided with a roller arc groove. A transmission shaft extending in the conveying direction of the rack is arranged below the roller, and transmission shaft bearing seats at the two ends of the transmission shaft are fixed to rack end plates respectively. A transmission shaft chain wheel is installed at one end of the transmission shaft and connected with a driving chain wheel at the output end of the gear motor through a chain. Driving wheels in one-to-one correspondence with the rollers are mounted on the transmission shaft, and each driving wheel is provided with a driving wheel arc groove; each driving wheel arc groove is connected with the corresponding roller arc groove through an O-shaped belt. The to-be-grabbed station conveyor is simple and reliable in structure, convenient to install and maintain and long in service life.

Description

Technical Field

[0001] The utility model relates to a conveyor for a waiting-to-grab station, belonging to the technical field of material conveying equipment. Background Art

[0002] Currently, automated systems for material packaging and conveying require robots to grab bags of flour and other substandard flour when they reach a certain location. Conveyor equipment for robotic grabbing generally employs two drive structures: a belt drive, in which a single belt drives multiple rollers to convey the material packages. This large contact surface between the belt and rollers makes belt transmission susceptible to damage from dust and friction. Furthermore, any damaged belt requires the removal of all rollers before replacement.

[0003] Another type of conveyor system uses a chain drive, where a sprocket chain drives the rollers to convey the packaged materials. This structure is similar to a belt structure, but it is noisy during operation, requires a sprocket for each roller, and is expensive and difficult to disassemble and maintain. Currently, this type of system typically uses a photoelectric switch as the signal for the material being conveyed. In the dusty environment of flour conveying, when the power switch is covered with dust, a false signal can occur, leading to empty grabbing and even bag tearing. Utility Model Content

[0004] The purpose of the utility model is to overcome the problems existing in the prior art and provide a conveyor for a waiting-to-grab station, which has a simple and reliable structure, is easy to install and maintain, has a long service life and a low manufacturing cost.

[0005] In order to solve the above technical problems, the utility model provides a conveyor for a waiting-to-grab station, comprising a frame, wherein a plurality of rollers parallel to each other are provided on the upper part of the frame, bearings are provided at both ends of each roller and square tenons are provided at the ends of the roller shafts, and the square tenons are respectively embedded in the open grooves on the upper ends of the side wall panels of the frame, and a plurality of grabbing avoidance grooves with upper ends being open are provided at the upper ends of the two side wall panels of the frame, and the position of each grabbing avoidance groove corresponds to the gap between adjacent rollers; the end of one side of each roller is provided with a roller arc groove; the lower part of the roller A transmission shaft is provided extending along the conveying direction of the frame, and both ends of the transmission shaft are respectively supported in the transmission shaft bearing seats, and the transmission shaft bearing seats are respectively fixed to the end plates of the frame by bolts; a transmission shaft sprocket is installed at one end of the transmission shaft, and the transmission shaft sprocket is connected to the driving sprocket at the output end of the reduction motor through a chain; driving wheels corresponding to the rollers are installed on the transmission shaft, and each driving wheel is provided with a driving wheel arc groove; each driving wheel arc groove is connected to the corresponding roller arc groove through an O-shaped belt.

[0006] Furthermore, the frame end plates are provided with vertical long grooves for the transmission shaft bearing seats to float up and down, and tensioning supports are respectively fixed on the upper parts of the two frame end plates, and tensioning screws are respectively screwed into the tensioning supports, and the lower ends of the tensioning screws are respectively pressed on the top centers of the corresponding transmission shaft bearing seats.

[0007] Furthermore, the outlet end of the frame is provided with an outlet end plate fixedly erected upward, and the side of the outlet end plate facing the end roller is provided with an impact baffle, the lower end of the impact baffle is hinged on the outlet end plate, and a signal switch is installed on the upper part of the outlet end plate, and the probe of the signal switch points to the back of the impact baffle.

[0008] Furthermore, the other end of each roller is also provided with a roller arc groove.

[0009] Furthermore, the transmission shafts are provided below both ends of the rollers, and the arc grooves of the rollers at both ends of each roller are connected to the corresponding driving wheels below through O-shaped belts.

[0010] Furthermore, a plurality of spare belt racks are provided along the length direction of the transmission shaft, and the spare belt racks include three U-shaped panels connected in series by round steel. The round steel passes around the transmission shaft and is fixed to the frame at both ends. Several spare O-belts are placed on the spare belt racks.

[0011] The beneficial effects of the utility model are as follows: 1. Multiple driving wheels are arranged on the transmission shaft, each driving wheel corresponds to a roller, and the driving wheels and the rollers are connected by an O-belt drive, which has a simple and reliable structure; during operation, each roller is driven independently, and the wear of two or three O-belts does not affect the operation of the entire equipment.

[0012] 2. A stand for placing spare O-belts is set near the drive shaft. The O-belts can be disassembled and replaced in time without disassembling the drive shaft, which greatly improves the efficiency of installation and maintenance.

[0013] 3. After the O-belt is installed, the transmission wheel and the roller can be driven with a phase difference. Therefore, the transmission wheels on both sides of the roller can be driven simultaneously by one motor when a reversing structure is added, which not only simplifies the structure but also saves space in the equipment.

[0014] 4. The equipment produces low noise during operation, and its simple structure reduces the probability of dust adhering to the equipment, which not only extends the service life of the equipment but also ensures a cleaner operating environment.

[0015] 5. The utility model is also provided with an impact baffle structure, which realizes the control of the grabbing rod through a mechanical switch, thereby avoiding the problem of false grabbing / empty grabbing caused by the traditional photoelectric switch in the case of dust adhesion. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. The accompanying drawings are only provided for reference and illustration and are not intended to limit the present invention.

[0017] Figure 1 This is the main view of the conveyor for the grabbing station of the utility model;

[0018] Figure 2 for Figure 1 A top view of

[0019] Figure 3 for Figure 1 Left view of;

[0020] Figure 4 for Figure 1 Stereoscopic image of

[0021] Figure 5 This is a three-dimensional diagram of the driving mechanism of Example 1 of the present utility model;

[0022] Figure 6 This is a three-dimensional diagram of the driving mechanism of Example 2 of the present utility model;

[0023] In the figure: 1. Frame; 1a. Frame side wall panel; 1a1. Grasping avoidance groove; 1b. Frame end plate; 1b1. Vertical long groove; 2. Roller; 2a. Roller arc groove; 3. Drive shaft bearing seat; 4. Drive shaft; 5. Drive wheel; 6. Drive shaft sprocket; 7. Reducer motor; 7a. Active sprocket; 8. Chain; 9. O-belt; 10. Tensioning support; 11. Tensioning screw; 12. Exit end plate; 13. Impact baffle; 14. Signal switch; 15. Round steel; 16. U-shaped panel. DETAILED DESCRIPTION

[0024] In the following description of the present invention, the terms "upper", "lower", "front", "back", "left", "right", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not mean that the device must have a specific direction.

[0025] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below with reference to specific illustrations.

[0026] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0027] like Figures 1 to 5As shown, the conveyor for the waiting-to-grab station of the present invention includes a frame 1, rollers 2, a transmission shaft 4, a reduction motor 7 and a spare belt placement rack. A plurality of rollers 2 parallel to each other are provided on the upper part of the frame 1. Bearings are provided at both ends of each roller 2 and square tenons are provided at the ends of the roller shafts. The square tenons are respectively embedded in the open grooves at the upper ends of the side wall panels 1a of the frame to prevent the roller shafts from rotating. The rollers 2 can rotate around the roller shafts at both ends.

[0028] A roller arc groove 2a is provided at the end of one side of each roller 2, and a transmission shaft 4 extending along the conveying direction of the frame is provided under the roller 2. Both ends of the transmission shaft 4 are respectively supported in the transmission shaft bearing seats 3, and the transmission shaft bearing seats 3 are respectively fixed to the frame end plate 1b by bolts; a transmission shaft sprocket 6 is installed at one end of the transmission shaft 4, and the transmission shaft sprocket 6 is connected to the driving sprocket 7a at the output end of the reduction motor 7 through a chain 8; a driving wheel 5 corresponding to the roller 2 is installed on the transmission shaft 4, and the driving wheel 5 is fixed to the transmission shaft 4 with a set screw, and each driving wheel 5 is provided with a driving wheel arc groove; each driving wheel arc groove is connected to the corresponding roller arc groove 2a through an O-shaped belt 9.

[0029] After the reduction motor 7 is started, the transmission shaft sprocket 6 is driven to rotate through the active sprocket 7a and the chain 8. The transmission shaft sprocket 6 drives the transmission shaft 4 and each driving wheel 5 to rotate. Each driving wheel 5 drives each roller 2 to rotate through the O-belt 9. Each roller 2 supports the packaging bag to realize the forward conveyance of the packaging bag.

[0030] Both the driving sprocket 7a and the transmission shaft sprocket 6 are double-row sprockets, and are driven from one side when conveying lighter materials. This allows the chain 8 to be directly installed on the other set of sprocket teeth when one side becomes worn. If one O-belt 9 breaks, the corresponding roller loses power and becomes a driven free roller. The adjacent rollers on both sides can still convey the bags, avoiding production line shutdown.

[0031] The other end of each roller 2 is also provided with a roller arc groove 2a. When the roller arc groove 2a on one side is worn, the roller can be directly reversed and used.

[0032] The outlet end of the frame 1 is fixed with an upwardly erected outlet end plate 12. A collision baffle 13 is provided on the side of the outlet end plate 12 facing the end roller. The lower end of the collision baffle 13 is hinged to the outlet end plate 12. A signal switch 14 is installed on the upper part of the outlet end plate 12, and the probe of the signal switch 14 points to the back of the collision baffle 13. The signal switch 14 can be a proximity switch or a travel switch. When the material is delivered to the designated position, the material collides with the collision baffle 13, causing the collision baffle 13 to tilt backward, thereby causing the signal switch 14 behind it to send a signal. After receiving the signal, the robot performs the grasping action.

[0033] The upper ends of the two frame side wall panels 1a are provided with multiple grabbing avoidance grooves 1a1 with upper ends open. The position of each grabbing avoidance groove 1a1 corresponds to the gap between adjacent rollers 2, which makes it convenient for the robot to insert from the grabbing avoidance groove 1a1 under the roller 2, and then lift the object upward to separate it from the roller 2 and transport it. During the grabbing process, interference with the O-belt 9 can be avoided.

[0034] The frame end plates 1b are provided with vertical slots 1b1 that allow the drive shaft bearing seats 3 to float up and down. Tensioning supports 10 are fixed to the upper portions of the two frame end plates 1b. Tensioning screws 11 are screwed into these supports 10, with the lower ends of these screws pressing against the top centers of the corresponding drive shaft bearing seats 3. After each O-belt 9 is in place, the tensioning screws 11 are turned to move the tensioning supports 10 downward, tightening each O-belt 9. The drive shaft bearing seats 3 are then bolted to secure them to the frame end plates 1b.

[0035] A plurality of spare belt racks are provided along the length direction of the transmission shaft 4. The spare belt racks include three U-shaped panels 16 connected in series by round steel 15. The round steel 15 passes around the transmission shaft 4 and is fixed to the frame at both ends. Several spare O-belts 9 are placed on the spare belt racks.

[0036] Since spare O-belts are pre-installed on the drive shaft 4 during equipment installation, spare O-belts can be directly used for replacement if a few O-belts break. Specifically, loosen the fastening bolts on the drive shaft bearing seat 3 and turn the tensioning screw 11 upward to untighten each O-belt. Then, remove the spare O-belt from the spare belt rack, lift the drive end of the adjacent roller upward, insert the O-belt, and re-engage the square tenon at the roller end into the open groove at the top of the frame side wall panel 1a. Then, directly fit the O-belt over the adjacent roller arc groove 2a and the adjacent drive wheel 5, and re-tension the drive shaft 4.

[0037] If the broken O-belt is one roller away from the spare belt rack, first move the adjacent O-belt to the adjacent roller, then remove the spare O-belt and add it to the adjacent roller of the spare belt rack, and so on. This way, there is no need to disassemble the drive shaft 4, which greatly reduces the workload and maintenance time.

[0038] like Figure 6 As shown in the figure, when conveying heavier materials, a transmission shaft 4 is provided below each end of the roller. The arc groove 2a at each end of the roller is connected to the corresponding drive wheel 5 below via an O-shaped belt. In other words, double-sided drive is adopted under heavy load conditions to prevent severe wear of the rollers due to heavy loads.

[0039] The above description is only a preferred embodiment of the present invention, which shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It does not limit the scope of patent protection of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. In addition to the above embodiments, the present invention may have other implementation methods without departing from the spirit and scope of the present invention. The present invention may also have various changes and improvements. Any technical solution formed by equivalent replacement or equivalent transformation falls within the scope of protection required by the present invention. The scope of protection required by the present invention is defined by the attached claims and their equivalents. The technical features not described in the present invention can be achieved by or using existing technologies, and will not be described here.

Claims

1. A conveyor for a station to be grasped, comprising a frame, a plurality of rollers parallel to each other provided on the upper portion of the frame, bearings provided at both ends of each roller and square tenons provided at the ends of the roller shafts, the square tenons respectively embedded in openings on the upper ends of the side walls of the frame, characterized in that: The upper ends of the two frame side wall panels are provided with multiple grabbing avoidance grooves with upper ends opened. The position of each grabbing avoidance groove corresponds to the gap between adjacent rollers. The end of one side of each roller is provided with a roller arc groove. A transmission shaft extending along the conveying direction of the frame is provided below the roller, and both ends of the transmission shaft are respectively supported in transmission shaft bearing seats, and the transmission shaft bearing seats are respectively fixed to the end plates of the frame by bolts; a transmission shaft sprocket is installed at one end of the transmission shaft, and the transmission shaft sprocket is connected to the driving sprocket at the output end of the reduction motor through a chain; The transmission shaft is provided with driving wheels corresponding to the rollers one by one, and each driving wheel is provided with a driving wheel arc groove; each driving wheel arc groove is connected to the corresponding roller arc groove through an O-shaped belt.

2. The conveyor for the waiting-to-grab station according to claim 1, characterized in that: The frame end plates are provided with vertical long grooves for the transmission shaft bearing seats to float up and down. Tensioning supports are respectively fixed on the upper parts of the two frame end plates. Tensioning screws are respectively screwed into the tensioning supports, and the lower ends of the tensioning screws are respectively pressed on the top centers of the corresponding transmission shaft bearing seats.

3. The conveyor for the waiting-to-grab station according to claim 1, characterized in that: The outlet end of the frame is provided with an outlet end plate fixedly erected upward, and an impact baffle is provided on the side of the outlet end plate facing the end roller, the lower end of the impact baffle is hinged on the outlet end plate, and a signal switch is installed on the upper part of the outlet end plate, and the probe of the signal switch points to the back of the impact baffle.

4. The conveyor for the waiting-to-grab station according to claim 1, characterized in that: The other end of each roller is also provided with a roller arc groove.

5. The conveyor for the waiting-to-grab station according to claim 4, characterized in that: The transmission shafts are respectively provided below both ends of the rollers, and the roller arc grooves at both ends of each roller are respectively connected to the corresponding driving wheels below through O-shaped belts.

6. The conveyor for the waiting-to-grab station according to any one of claims 1 to 5, characterized in that: A plurality of spare belt racks are provided along the length direction of the transmission shaft. The spare belt racks include three U-shaped panels connected in series by round steel. The round steel passes around the transmission shaft and is fixed to the frame at both ends. Several spare O-belts are placed on the spare belt racks.

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