A conveying device and system based on a stepping motor for facilitating the turning of a tobacco box

Abstract

The application relates to a conveying device and system based on a stepping motor and facilitating the turning of a tobacco box, which comprises a transmission shaft, a belt, a stepping motor, a sensor, a moving support assembly and a plurality of arc-shaped support plates; the transmission shaft rotates under the driving of the belt, a plurality of cylindrical pins are uniformly arranged on the periphery of the transmission shaft; the stepping motor is fixed on a rack, the output shaft of the stepping motor is a lead screw structure, the moving support assembly is fixed on a lead screw nut, and the lead screw nut is threadedly connected with the lead screw; one end of each arc-shaped support plate is connected with a cylindrical pin, and the other end of the arc-shaped support plate is slidably matched with the moving support assembly. Through the conveying device, the timeliness of response is ensured, and the moving support assembly moves different distances forward and backward to change the circumference of the lower surface of the circular table, so that the large and small tobacco boxes can smoothly turn.

Description

Technical Field

[0001] The present invention belongs to the technical field of cigarette box conveying, and in particular relates to a conveying device and system based on a stepping motor that facilitates the turning of a cigarette box. Background Art

[0002] During cigarette transportation, the transport of cigarette cases is a critical step. Cigarette cases vary in size, and they inevitably need to turn during transport. Currently, most cases are driven by cone-shaped rollers. While small cases can turn smoothly, large cases can sometimes get stuck during turns, requiring manual pushing. This not only wastes manpower, but, if not discovered in time, can cause the entire case transport process to stall, even reducing the efficiency of previous processes (such as rolling and packaging). Summary of the Invention

[0003] The object of the present invention is to provide a conveying device and system based on a stepping motor that facilitates the turning of a cigarette box, so as to solve the problem that the cigarette box may become stuck during the turning process.

[0004] To achieve the above objectives, this application is implemented through the following technical solutions:

[0005] A conveying device based on a stepper motor for facilitating the turning of a cigarette box, comprising a transmission shaft, a belt, a stepper motor, a sensor, a movable support assembly, and a plurality of arc-shaped support plates;

[0006] The transmission shaft rotates under the drive of the belt, and a plurality of cylindrical pins are evenly arranged around the periphery of the transmission shaft;

[0007] The stepper motor is fixed on the frame, the output shaft of the stepper motor is a lead screw structure, the movable support assembly is fixed on the lead screw nut, and the lead screw nut is threadedly connected to the lead screw;

[0008] One end of each arc-shaped support plate is connected to a cylindrical pin, and the other end of the arc-shaped support plate is in sliding engagement with the movable support assembly;

[0009] The sensor is communicatively connected to the controller, and the controller is signal-connected to a stepper motor driver board, which is used to control the stepper motor.

[0010] Furthermore, there are six cylindrical pins evenly distributed around the periphery of the transmission shaft.

[0011] Furthermore, the multiple arc-shaped support plates are six arc-shaped support plates with the same structure, each including an arc-shaped support plate body and a sliding bar arranged below the arc-shaped support plate body, and the outer surfaces of the six arc-shaped support plates form a contour similar to a frustum, and the circumference of the upper bottom surface of the frustum is constant, and the circumference of the lower bottom surface changes by moving the support assembly.

[0012] Furthermore, the movable support assembly includes a rolling bearing and a constraint wheel, the rolling bearing is fixed on the screw nut, the rolling bearing is embedded in the constraint wheel, six through holes are evenly spaced on the constraint wheel, and the sliding bar is inserted into the through holes.

[0013] A system using any of the above-mentioned conveying devices.

[0014] Furthermore, it also includes brackets, multiple cylindrical rollers arranged between the brackets, and multiple conveying devices are arranged at the turning points of the system.

[0015] The beneficial effects of the present invention are:

[0016] This technical solution ensures the timeliness of response through the transmission device, and for large and small cigarette boxes, the mobile support assembly will move back and forth different distances to change the circumference of the bottom surface of the circular table, thereby ensuring that both large and small cigarette boxes can turn smoothly. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the structure of the conveying system of the present invention.

[0018] Figure 2 for Figure 1 Enlarged view of point A.

[0019] Figure 3 for Figure 1 Enlarged view of point B.

[0020] Figure 4 Schematic diagram of the transmission device structure.

[0021] Figure 5 Schematic diagram of the arc support plate structure.

[0022] Description of reference numerals:

[0023] 1. Large cigarette box; 2. Small cigarette box; 3. Rack; 4. Cylindrical roller; 5. Conveyor; 51. Drive shaft; 52. Cylindrical pin; 6. Belt; 7. Arc support plate; 71. Arc support plate body; 72. Slide bar; 8. Mobile support assembly; 81. Rolling bearing; 82. Constraint wheel; 9. Stepper motor; 10. Sensor; 11. Controller; 12. Stepper motor drive board; 13. Screw nut; 14. Screw. DETAILED DESCRIPTION

[0024] The technical solution of the present invention is described in detail below with reference to the accompanying drawings. The following embodiments are merely exemplary and can only be used to explain and illustrate the technical solution of the present invention, and cannot be interpreted as limiting the technical solution of the present invention.

[0025] like Figure 1As shown, a cigarette box conveying system includes a frame 3 and multiple cylindrical rollers 4 arranged between the frames. The large cigarette boxes 1 or small cigarette boxes 2 used for conveying are conveyed through the cigarette box conveying system. In the technical solution of this application, the cigarette box conveying system, except for the turning part, is all existing technology. Those skilled in the art are familiar with the structure of the existing cigarette box conveying system, including power, etc. Because this technical solution does not involve other parts of the cigarette box conveying system, the applicant will not provide a detailed description of the cigarette box conveying system.

[0026] At the turning point of the cigarette box conveying system, a plurality of conveying devices 5 are provided. The specific number is set according to the actual situation of the turning point of the cigarette box conveying system. The structure of each conveying device 5 is the same.

[0027] like Figures 2 to 5 As shown, the conveying device 5 of the present application includes a transmission shaft 51, a belt 6, a stepper motor 9, a sensor 10, a controller 11, a stepper motor drive plate 12, a movable support assembly 8 and six arc-shaped support plates 7 with the same structure and shape.

[0028] like Figure 1 As shown, the drive shaft 51 of the present application is mounted on the inner side plate of the frame 3 at the corner of the cigarette box conveyor system. The drive shaft 51 is connected to the power source via a belt 6 and rotates under the belt's drive, which is equivalent to the rotation method of a cylindrical roller. Six cylindrical pins 52 are evenly arranged around the periphery of the drive shaft on the inner side of the frame. These six cylindrical pins 52 are used to connect with the front ends of six curved support plates 7.

[0029] The stepper motor 9 is fixed on the outer plate of the frame. The output shaft of the stepper motor 9 is a screw 14 structure, and after passing through the outer plate of the frame, the screw nut 13 is threadedly connected to the screw 14. The movable support assembly 8 is fixed on the screw nut 13. The movable support assembly 8 of this application includes a rolling bearing 81 and a constraint wheel 82. The inner ring of the rolling bearing 81 is fixedly connected to the screw nut 13, and the outer ring of the rolling bearing 81 is embedded in the constraint wheel 82 to form the movable support assembly 8. Six through holes are provided on the constraint wheel.

[0030] like Figure 5 As shown, the present application includes six arc-shaped support plates 7 of identical structure. Each arc-shaped support plate includes an arc-shaped support plate body 71 and a slide bar 72 disposed below the arc-shaped support plate body. The outer surfaces of the six arc-shaped support plates form a profile similar to a truncated cone. The circumference of the upper bottom surface of the truncated cone is constant (the end connected to the cylindrical pin), and the circumference of the lower bottom surface is variable by moving the support assembly. Specifically, the slide bar of the arc-shaped support plate is inserted into the through hole, so that the slide bar and the through hole form a moving pair constraint, thereby preventing the arc-shaped support plate from spreading due to gravity.

[0031] The movable support assembly composed of the rolling bearing 81 and the restraining wheel 82 can not only open the six arc-shaped support plates, but also prevent the six arc-shaped support plates from being subjected to friction when the transmission shaft drives them to rotate.

[0032] A sensor 10 is installed on the side of the stepper motor 9 close to the movable support assembly, and a controller 11 and a stepper motor drive board 12 are also installed on the stepper motor. The controller of this application is a single-chip microcomputer, and the sensor and the stepper motor drive board are both connected to the controller electrical signal. The stepper motor drive board is used to control the operation of the stepper motor.

[0033] The working principle of the conveying device of this application is:

[0034] When cigarette boxes, whether large or small, are transported on a conveyor system, when they reach a bend, the speed of the box near the outer periphery must be greater than the speed near the inner periphery. Furthermore, to offset centrifugal force during the turn, the outer side of the box must be higher than the inner side. In this technical solution, a belt drives a drive shaft, which in turn drives six curved support plates. At the bend, sensors on each conveyor device can promptly detect the size of the box and quickly transmit the detected signal to a single-chip microcomputer. The single-chip microcomputer controls the stepper motor driver board, which drives the lead screw. In this embodiment, the direction away from the stepper motor is considered "forward," and the direction away from the stepper motor is considered "backward."

[0035] When a large cigarette box is detected, the mobile support assembly of the stepper motor moves forward and stretches out the six arc-shaped support plates. At this time, the circumference of the lower bottom surface of the "cone" composed of the six arc-shaped support plates increases, and the angular velocity of the "cone" is always equal to the rotational speed of the drive shaft. Therefore, as the "cone" rotates, on the one hand, the speed of the large cigarette box near the outer circumference increases, and on the other hand, the height of the outer side of the large cigarette box increases, ensuring that the centrifugal force of the turn is offset. When a small cigarette box is detected, the mobile support assembly of the stepper motor moves backward, and the six arc-shaped support plates shrink. At this time, the circumference of the lower bottom surface of the "cone" composed of the six arc-shaped support plates decreases, but it is still greater than the circumference of the upper surface of the "cone". Therefore, compared to when the large cigarette box turns, on the one hand, although the speed of the small cigarette box near the outer circumference decreases, it is still greater than the speed near the inner circumference. On the other hand, the height of the outer side of the small cigarette box is still greater than the height of the inner side, ensuring that the centrifugal force of the turn is offset. The above description is merely an embodiment of the present application and does not constitute any form of limitation to the present application. Although the present application discloses the preferred embodiments as above, it is not intended to limit the present application. Any technical personnel familiar with the present profession, without departing from the scope of the technical solution of the present application, using the technical content disclosed above to make slight changes or modifications are equivalent to equivalent implementation cases and fall within the scope of the technical solution.

Claims

1. A conveying device based on a stepper motor to facilitate the turning of a cigarette box, characterized in that: It includes a transmission shaft, a belt, a stepper motor, a sensor, a mobile support assembly and a plurality of arc-shaped support plates; The transmission shaft rotates under the drive of the belt, and a plurality of cylindrical pins are evenly arranged around the periphery of the transmission shaft; The stepper motor is fixed on the frame, the output shaft of the stepper motor is a lead screw structure, the movable support assembly is fixed on the lead screw nut, and the lead screw nut is threadedly connected to the lead screw; One end of each arc-shaped support plate is connected to a cylindrical pin, and the other end of the arc-shaped support plate is in sliding engagement with the movable support assembly; The sensor is in communication with the controller, the controller is in signal connection with the stepper motor driver board, and the stepper motor driver board is used to control the stepper motor; The plurality of arc-shaped support plates are six arc-shaped support plates of the same structure, each comprising an arc-shaped support plate body and a slide bar disposed below the arc-shaped support plate body, and the outer surfaces of the six arc-shaped support plates form a truncated cone profile, wherein the circumference of the upper bottom surface of the truncated cone is constant, and the circumference of the lower bottom surface is changed by moving the support assembly; The movable support assembly includes a rolling bearing and a constraint wheel. The rolling bearing is fixed on the screw nut. The rolling bearing is embedded in the constraint wheel. Six through holes are evenly spaced on the constraint wheel. The slide bar is inserted into the through holes.

2. The conveying device based on a stepper motor for facilitating cigarette box turning according to claim 1 is characterized in that: There are six cylindrical pins evenly distributed around the periphery of the transmission shaft.

3. A conveying system based on a stepper motor to facilitate the turning of a cigarette box, characterized in that: A conveying device comprising a plurality of conveying devices according to any one of claims 1 to 2.

4. The stepper motor-based conveying system for facilitating cigarette box turning according to claim 3 is characterized in that: It also includes brackets, multiple cylindrical rollers arranged between the brackets, and multiple conveying devices are arranged at the turning points of the system.

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