Discharging anti-blocking device of cut tobacco storage cabinet

Abstract

The utility model provides a cut tobacco storage cabinet discharging anti-blocking device which comprises a controller, a first laser range finder, a second laser range finder and a third laser range finder, the first laser range finder is arranged on the left side of the inner wall of the top of a protective cover at an outlet of a belt conveyor, and the second laser range finder is arranged on the right side of the inner wall of the top of the protective cover. The second laser range finder is arranged in the middle of the inner wall of the top of the protective cover, and the third laser range finder is arranged on the right side of the inner wall of the top of the protective cover. The first laser range finder, the second laser range finder and the third laser range finder are opposite to the left side, the middle position and the right side of the discharging end of a conveying belt of the belt conveyor respectively. The first laser range finder, the second laser range finder and the third laser range finder are electrically connected with the controller, and the controller is electrically connected with the frequency converter. According to the utility model, the discharge port of the belt conveyor and the blanking port of the shred storage cabinet can be effectively prevented from being blocked.

Description

Technical Field

[0001] The utility model belongs to the technical field of tobacco manufacturing, and particularly relates to a device for preventing blockage of the discharge of a wire storage cabinet. Background Art

[0002] When the wire storage cabinet discharges materials, the frequency of the frequency converter used to control the running speed of the discharge belt is fixed after being manually set and cannot change in real time. However, both the discharge belt and the feeding roller in the wire storage cabinet adopt chain drive. Due to the polygonal movement of the chain links, the instantaneous transmission ratio is variable, and the instantaneous chain speed is not a constant speed but constantly changing. This results in an unstable wire output amount of the wire storage cabinet when the frequency of the frequency converter is constant, sometimes large and sometimes small. When the wire output amount is large, since the height of the protective cover at the discharge port of the belt conveyor is fixed, if the wire output amount remains large within a certain period of time, blockage will occur at the discharge port of the belt conveyor, and then it will easily cause blockage at the material dropping port of the wire storage cabinet, thereby causing material feeding interruption of the pneumatic wire feeding and affecting the wire supply. Therefore, how to effectively avoid blockage at the material dropping port of the wire storage cabinet has become a technical problem that needs to be urgently solved by those skilled in the art. Content of the Utility Model

[0003] The purpose of the utility model is to provide a device for preventing blockage of the discharge of a wire storage cabinet to solve the above-mentioned technical problems in the prior art.

[0004] To achieve the above purpose, the utility model provides the following technical solutions:

[0005] A device for preventing blockage of the discharge of a wire storage cabinet includes a controller, a first laser rangefinder, a second laser rangefinder, and a third laser rangefinder. The first laser rangefinder is arranged on the left side of the top inner wall of the protective cover at the outlet of the belt conveyor. The second laser rangefinder is arranged at the middle position of the top inner wall of the protective cover. The third laser rangefinder is arranged on the right side of the top inner wall of the protective cover. The first laser rangefinder, the second laser rangefinder, and the third laser rangefinder are respectively opposite to the left side, the middle position, and the right side of the discharge end of the conveyor belt of the belt conveyor. The first laser rangefinder, the second laser rangefinder, and the third laser rangefinder are respectively electrically connected to the controller, and the controller is electrically connected to the frequency converter.

[0006] Preferably, the second laser rangefinder is detachably connected to the protective cover through a mounting bracket.

[0007] Preferably, the mounting bracket includes a vertical plate and a horizontal plate. The horizontal plate is perpendicularly connected to the upper end of the rear side wall of the vertical plate. The horizontal plate is provided with mounting holes for the threaded sections of the fixing screws to pass through. The protective cover is provided with threaded holes for cooperating with the threaded sections of the fixing screws, and the threaded holes are opposite to the mounting holes.

[0008] Preferably, the number of the mounting holes is three, and the mounting holes are evenly distributed in the extending direction of the horizontal plate; the number of the threaded holes is three, and the three threaded holes correspond to the three mounting holes one by one.

[0009] Preferably, a long strip hole extending in the vertical direction is arranged on the vertical plate, and at least two screw holes for cooperating with the threaded section of the fastening screw are arranged on the second laser rangefinder, and the two screw holes are opposite to the long strip hole respectively.

[0010] Preferably, the vertical plate and the horizontal plate are of an integral structure.

[0011] The beneficial effect of the present utility model lies in that:

[0012] For the anti-blocking device for the discharge of the wire storage cabinet of the present utility model, the distance between the top of the cut tobacco on the left side of the discharge end of the conveyor belt and the conveyor belt is detected in real time by the first laser rangefinder, and at the same time, the distance between the top of the cut tobacco at the middle position of the discharge end of the conveyor belt and the conveyor belt is detected in real time by the second laser rangefinder, and the distance between the top of the cut tobacco on the right side of the discharge end of the conveyor belt and the conveyor belt is detected in real time by the third laser rangefinder. Then, each laser rangefinder sends the detected distance to the controller respectively. The controller respectively judges whether the height of the cut tobacco on the left side, the middle position and the right side of the discharge end of the conveyor belt is greater than the maximum value of the set height threshold according to the above three distances. If the height of the cut tobacco at any of the above parts of the discharge end of the conveyor belt is greater than the maximum value, the controller controls the frequency of the frequency converter to decrease, so that the rotational speed of the driving motor controlled by the frequency converter decreases, so as to reduce the running speed of the discharge belt and the discharge amount, so that it is not easy to block at the discharge port of the belt conveyor, and further effectively avoid blocking at the blanking port of the wire storage cabinet. Description of the Drawings

[0013] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required to be used in the embodiments, and will further describe the specific embodiments of the present utility model in detail in combination with the drawings, where

[0014] Figure 1 is a schematic diagram of the anti-blocking device for the discharge of the wire storage cabinet provided by the embodiment of the present utility model;

[0015] Figure 2 is a schematic diagram of the mounting bracket provided by the embodiment of the present utility model.

[0016] Marks in the drawings:

[0017] 11, conveyor belt, 12, protective cover; 21, first laser rangefinder,

[0018] 22. Second laser rangefinder, 23. Third laser rangefinder;

[0019] 31. Controller; 41. Frequency converter; 51. Vertical plate, 52. Horizontal plate,

[0020] 53. Mounting hole, 54. Long strip hole. Detailed implementation mode

[0021] In order to enable those skilled in the art to better understand the technical solution of the present utility model, the following will further introduce the solution in detail in combination with specific embodiments.

[0022] As Figure 1 shown, the embodiment of the present utility model provides a wire storage cabinet discharging anti-blocking device, which includes a controller 31, a first laser rangefinder 21, a second laser rangefinder 22, and a third laser rangefinder 23. The first laser rangefinder 21 is arranged on the left side of the top inner wall of the protective cover 12 at the outlet of the belt conveyor. The second laser rangefinder 22 is arranged at the middle position of the top inner wall of the protective cover. The third laser rangefinder 23 is arranged on the right side of the top inner wall of the protective cover. The first laser rangefinder 21, the second laser rangefinder 22, and the third laser rangefinder 23 are respectively opposite to the left side, the middle position, and the right side of the discharging end of the conveying belt 11 of the belt conveyor. The first laser rangefinder 21, the second laser rangefinder 22, and the third laser rangefinder 23 are respectively electrically connected to the controller 31, and the controller 31 is electrically connected to the frequency converter 41.

[0023] The anti-blocking device for the discharge of the wire storage cabinet provided by the embodiment of the utility model utilizes the first laser rangefinder 21 to detect the distance between the top of the cut tobacco on the left side of the discharge end of the conveying belt and it in real time. At the same time, the second laser rangefinder 22 detects the distance between the top of the cut tobacco at the middle position of the discharge end of the conveying belt and it in real time, and the third laser rangefinder 23 detects the distance between the top of the cut tobacco on the right side of the discharge end of the conveying belt and it in real time. Then each laser rangefinder respectively sends the detected distance to the controller. The controller 31 respectively judges whether the height of the cut tobacco on the left side, the middle position and the right side of the discharge end of the conveying belt is greater than the maximum value of the set height threshold according to the above three distances. If the height of the cut tobacco on any of the above parts of the discharge end of the conveying belt is greater than the maximum value, the controller controls the frequency of the frequency converter 41 to decrease, so that the rotational speed of the drive motor controlled by the frequency converter decreases, thereby reducing the running speed of the discharge belt driven by the drive motor and reducing the discharge amount, avoiding that the discharge amount of the wire storage cabinet is always large, so as to facilitate the conveying belt to consume this part of cut tobacco with too large height in time, so that it is not easy to block at the discharge port of the belt conveyor, and further effectively avoiding the blockage at the blanking port of the wire storage cabinet. When the controller judges that the height of the cut tobacco on the above three parts is less than the minimum value of the set height threshold, it controls the frequency of the frequency converter to increase, so that the rotational speed of the drive motor becomes larger, so as to increase the running speed of the discharge belt and increase the discharge amount, so that the height of the cut tobacco on the conveying belt is relatively stable, so that the discharge of the wire storage cabinet is more uniform and stable.

[0024] Further, the second laser rangefinder 22 is detachably connected to the protective cover through the mounting bracket, so that the second laser rangefinder 22 can be conveniently detached from the protective cover for replacement or maintenance.

[0025] As Figure 2 shown, the mounting bracket includes a vertical plate 51 and a horizontal plate 52. The horizontal plate 52 is vertically connected to the upper end of the rear side wall of the vertical plate 51. The horizontal plate 52 is provided with a mounting hole 53 for the threaded section of the fixing screw to pass through, and the protective cover is provided with a threaded hole for matching with the threaded section of the fixing screw. The threaded hole is opposite to the mounting hole 53. Adopting this scheme, after the threaded section of the fixing screw passes through the mounting hole and is matched with the threaded hole and tightened, the mounting bracket can be fixed on the protective cover.

[0026] Preferably, the number of the mounting holes 53 is three, and the mounting holes 53 are evenly distributed in the extending direction of the horizontal plate 52; the number of the threaded holes is three, and the three threaded holes correspond to the three mounting holes one by one. Therefore, by using three fixing screws to connect the horizontal plate and the protective cover, the connection between the mounting bracket and the protective cover can be made more firm and reliable; at the same time, only two fixing screws can also be used, so that the position of the second laser rangefinder in the horizontal direction can be adjusted.

[0027] Furthermore, a long strip hole 54 extending in the vertical direction is arranged on the vertical plate 51, and at least two screw holes for cooperating with the threaded section of the fastening screw are arranged on the second laser rangefinder, and the two screw holes are respectively opposite to the long strip hole 54. With this solution, the position of the second laser rangefinder in the vertical direction can be conveniently adjusted by using the long strip hole, making the installation position of the second laser rangefinder more flexible.

[0028] Specifically, the vertical plate 51 and the horizontal plate are of an integral structure, so that the overall strength of the mounting bracket is better.

[0029] Preferably, the controller 31 is a PLC controller, so that the height threshold of the cut tobacco on the conveyor belt can be conveniently set. It can be understood that the height, i.e., the thickness, of the cut tobacco is equal to the vertical distance between the lowermost end of the laser rangefinder and the top of the cut tobacco on the conveyor belt minus the vertical distance between the conveyor belt and the lowermost end of the laser rangefinder; the ranging probe of the laser rangefinder is located at its lowermost end. Figure 1 The dotted line in represents the wire. The first laser rangefinder and the third laser rangefinder can also be connected to the protective cover by using the above mounting bracket.

[0030] In an embodiment, the cut tobacco storage cabinet discharge anti-blocking device further includes a fourth laser rangefinder electrically connected to the controller, and the fourth laser rangefinder is arranged directly above the longitudinal middle position of the conveyor belt. With this solution, the fourth laser rangefinder can be used to detect the distance between the top of the cut tobacco at the longitudinal middle position of the conveyor belt and it in real time and send it to the controller. If the controller determines that the height of the cut tobacco at this part is greater than the maximum value of the set height threshold, the controller will also control the frequency of the frequency converter to decrease, so that the speed of the drive motor decreases, so as to reduce the running speed of the cut tobacco storage cabinet discharge belt in advance and reduce the discharge amount, so that it is less likely to be blocked at the discharge port of the belt conveyor, and thus the blockage of the discharge port of the cut tobacco storage cabinet can be effectively avoided.

[0031] The utility model can adjust the frequency of the frequency converter in real time according to the height of the cut tobacco on the conveyor belt, so as to adjust the discharge amount of the cut tobacco storage cabinet. When the height of the cut tobacco is too large, the discharge amount of the cut tobacco storage cabinet is reduced; when the height of the cut tobacco is too small, the discharge amount is increased, so that the continuity, uniformity and stability of the discharge of the cut tobacco storage cabinet can be better ensured.

[0032] The utility model can prevent blockages from occurring at the discharge port of the belt conveyor and the material dropping port of the cut tobacco storage cabinet when the cut tobacco storage cabinet discharges materials, reduce the labor intensity of workers, and ensure the continuity and stability of the discharge of the cut tobacco storage cabinet; at the same time, it has a simple structure and is convenient to use.

[0033] The above are only the preferred embodiments of the utility model. It should be noted that these embodiments are only used to illustrate the utility model and not to limit the scope of the utility model. Moreover, after reading the content of the utility model, those skilled in the relevant art can make various changes or modifications to the utility model, and these equivalent forms also fall within the scope defined by the appended claims of this application.

Claims

1. A device for preventing blockage of the wire storage cabinet during discharging, characterized in that, It includes a controller, a first laser rangefinder, a second laser rangefinder, and a third laser rangefinder. The first laser rangefinder is arranged on the left side of the top inner wall of the protective cover at the outlet of the belt conveyor. The second laser rangefinder is arranged at the middle position of the top inner wall of the protective cover. The third laser rangefinder is arranged on the right side of the top inner wall of the protective cover. The first laser rangefinder, the second laser rangefinder, and the third laser rangefinder are respectively opposite to the left side, the middle position, and the right side of the discharge end of the conveyor belt of the belt conveyor. The first laser rangefinder, the second laser rangefinder, and the third laser rangefinder are respectively electrically connected to the controller, and the controller is electrically connected to the frequency converter.

2. The wire storage cabinet discharging anti-blocking device according to claim 1, wherein The second laser rangefinder is detachably connected to the protective cover through a mounting bracket.

3. The anti-clogging device for the outgoing material of the wire storage cabinet according to claim 2, characterized in that, The mounting bracket includes a vertical plate and a horizontal plate. The horizontal plate is perpendicularly connected to the upper end of the rear side wall of the vertical plate. The horizontal plate is provided with mounting holes for the threaded sections of the fixing screws to pass through. The protective cover is provided with threaded holes for cooperating with the threaded sections of the fixing screws, and the threaded holes are opposite to the mounting holes.

4. The anti-clogging device for the wire storage cabinet discharge according to claim 3, characterized in that, The number of the mounting holes is three, and the mounting holes are evenly distributed in the extending direction of the horizontal plate. The number of the threaded holes is three, and the three threaded holes correspond to the three mounting holes one by one.

5. The wire storage cabinet discharging anti-blocking device according to claim 3, characterized in that, The vertical plate is provided with elongated holes extending in the vertical direction. The second laser rangefinder is provided with at least two screw holes for cooperating with the threaded sections of the fastening screws, and the two screw holes are respectively opposite to the elongated holes.

6. The wire storage cabinet discharging anti-clogging device according to any one of claims 3 to 5, characterized in that, The vertical plate and the horizontal plate are of an integral structure.

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