Automatic tensioning device for tobacco conveying belt

Abstract

The utility model discloses an automatic tensioning device for a tobacco conveying belt, which is applied to the technical field of tobacco processing and conveying equipment, and is characterized in that a tensioning mechanism comprises a spring rod fixedly connected with the bottom of a square plate, a driven shaft and a driving shaft, one end of the driving shaft penetrates through the outer wall of the strip-shaped plate to extend and is fixedly connected with a conveying motor through a coupler, and the outer wall of the driving shaft and the outer wall of the driven shaft are fixedly connected with transmission rollers in a sleeving mode. The lower end of the spring rod drives the circular ring block, the circular shaft and the tensioning roller to move downwards, so that the conveying belt is in a tensioned state all the time, the phenomenon that the conveying belt slips after being used for a long time or when the number of tobaccos on the conveying belt is small is avoided, the conveying effect is good, and the situation that the working period is delayed due to the fact that overhauling workers are arranged for overhauling is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of tobacco processing and conveying equipment, in particular to an automatic tensioning device for a tobacco conveying belt. Background Art

[0002] In the modern tobacco production process, conveyor belts play a vital role in efficiently transporting tobacco leaves and other raw materials. With the expansion of production scale and the improvement of automation, the traditional conveyor belt tensioning method began to show its shortcomings and could not meet the growing production needs.

[0003] Traditional tensioning devices mainly rely on manual adjustment. Operators need to rely on experience to determine whether the conveyor belt needs to be tensioned, and manually adjust the pulley spacing after the equipment stops to achieve tension. This manual adjustment method is inefficient and cannot be adjusted in time when the conveyor belt becomes loose, which not only reduces the conveying efficiency, but also may cause insufficient friction between the conveyor belt and the material, thus affecting the conveying effect.

[0004] And as the conveyor belt is used for a longer time, it may wear out or become loose, causing slippage, which will greatly reduce the conveying effect. It is usually necessary to arrange maintenance workers to carry out maintenance, which not only increases maintenance costs, but may also cause production delays and affect the overall work progress. Utility Model Content

[0005] The purpose of the utility model is to provide an automatic tensioning device for a tobacco conveyor belt, so as to solve the problem proposed in the above background technology that as the conveyor belt is used for a longer time, it may wear or become loose, thereby causing slippage, which greatly reduces the conveying effect. Arranging maintenance workers to carry out maintenance not only increases maintenance costs, but may also lead to production delays and affect the overall work progress.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an automatic tensioning device for a tobacco conveyor belt, comprising a strip plate and a square plate fixedly connected between adjacent surfaces of two strip plates, a tensioning mechanism and a shaking mechanism are respectively arranged between the two strip plates;

[0007] The tensioning mechanism includes a spring rod fixedly connected to the bottom of the square plate, and a driven shaft and a driving shaft rotatably connected between adjacent surfaces of the two strip plates through bearing 1, one end of the driving shaft extends through the outer wall of the strip plate and is fixedly connected to a transmission motor through a coupling, a transmission roller is fixedly sleeved on the outer walls of the driving shaft and the driven shaft, the other end of the spring rod is fixedly connected to a circular ring block, the inner wall of the circular ring block is rotatably connected to a circular shaft through bearing 2, tensioning rollers are fixedly sleeved on the outer walls of both ends of the circular shaft, and a conveyor belt is transmission-connected between the two transmission rollers and the tensioning roller.

[0008] The present utility model is further configured as follows: The jitter mechanism includes a through - opening formed in a square plate and a driving wheel. A rotating shaft is rotatably connected to the inner wall of the through - opening through a third bearing. A driven wheel and a cam are fixedly connected to the outer wall of the rotating shaft respectively. An elastic belt is connected in transmission between the driving wheel and the driven wheel.

[0009] With the above - mentioned technical solution, the driving wheel drives the driven wheel to rotate through the elastic belt. The driven wheel drives the rotating shaft to rotate, and the rotating shaft drives the cam to rotate. During the rotation of the cam, it will periodically push the conveyor belt upwards, so that the conveyor belt has an up - and - down jitter effect during the process of conveying tobacco, which can make the distribution of tobacco leaves on the conveyor belt more uniform and is beneficial to subsequent processing procedures.

[0010] The present utility model is further configured as follows: The conveying motor is fixedly installed on the outer wall of the strip - shaped plate through a motor bracket.

[0011] With the above - mentioned technical solution, the conveying motor is a servo motor, which provides power output for the whole device.

[0012] The present utility model is further configured as follows: Fine through - holes are evenly arranged at equal intervals on the surface of the conveyor belt.

[0013] With the above - mentioned technical solution, when the conveyor belt conveys tobacco with jitter, and in cooperation with the through - holes formed on the conveyor belt, it can make fine debris or other solid particles including sand grains play a sorting role during the conveying process of tobacco.

[0014] The present utility model is further configured as follows: The driving wheel is fixedly sleeved on the outer wall of the rotating shaft.

[0015] With the above - mentioned technical solution, by fixedly connecting the driving wheel and the rotating shaft, the kinetic energy on the tensioning mechanism is transmitted to the jitter mechanism through the driving wheel, providing power for the normal operation of the jitter mechanism.

[0016] The present utility model is further configured as follows: The number of the cams is two, and the two cams are symmetrically arranged about the center of the square plate.

[0017] With the above - mentioned technical solution, the symmetrically arranged cams can make the overall jitter amplitude of the conveyor belt consistent during the conveying process.

[0018] The present utility model is further configured as follows: Support legs are fixedly connected to the bottoms of the two strip - shaped plates.

[0019] With the above - mentioned technical solution, the support legs mainly play a supporting role for the whole device.

[0020] The present utility model provides an automatic tensioning device for a tobacco conveyor belt, having the following beneficial effects:

[0021] (1) The utility model winds the conveyor belt around the outer walls of two driving rollers and a tensioning roller. Under the elastic force of the spring rod itself, the lower end of the spring rod drives the ring block, the round shaft, and the tensioning roller to have a downward movement tendency, so that the conveyor belt is always in a tensioned state, avoiding the phenomenon of slipping when the conveyor belt is used for a long time or when there is less tobacco on the conveyor belt, making the conveying effect better, and not delaying the working period due to arranging maintenance workers for maintenance. Moreover, the transmission motor drives the driving shaft to rotate. With the cooperation of the driven shaft, the driving roller, and the conveyor belt, the tensioning roller is driven to rotate, and the tensioning roller drives the round shaft to rotate, thus facilitating the transfer of the kinetic energy on the tensioning mechanism to the shaking mechanism and realizing the maximum utilization of power.

[0022] (2) In the utility model, the driving wheel drives the driven wheel to rotate through the elastic belt, the driven wheel drives the rotating shaft to rotate, the rotating shaft drives the cam to rotate. During the rotation process of the cam, it periodically pushes the conveyor belt upward, so that the conveyor belt has an up-and-down shaking effect during the process of conveying tobacco, which can make the distribution of tobacco leaves on the conveyor belt more uniform and is beneficial to subsequent processing procedures. Coupled with the through holes arranged on the conveyor belt, when the tobacco is being conveyed, small debris or other solid particles including sand grains can play a sorting role. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is a three-dimensional view of the utility model;

[0024] Figure 2 is a bottom view of the utility model;

[0025] Figure 3 is a top view of the shaking mechanism of the utility model;

[0026] Figure 4 is a three-dimensional view of the shaking mechanism of the utility model.

[0027] In the figure: 1, strip plate; 2, tensioning mechanism; 21, transmission motor; 22, driven shaft; 23, driving shaft; 24, driving roller; 25, spring rod; 26, ring block; 27, round shaft; 28, tensioning roller; 29, conveyor belt; 3, shaking mechanism; 31, through opening; 32, rotating shaft; 33, cam; 34, driven wheel; 35, driving wheel; 36, elastic belt; 4, square plate. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0028] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0029] like Figures 1-4 As shown, the utility model provides a technical solution: an automatic tensioning device for a tobacco conveyor belt, comprising a strip plate 1 and a square plate 4 fixedly connected between adjacent surfaces of two strip plates 1, the bottoms of the two strip plates 1 are fixedly connected with support legs, the support legs mainly play a supporting role for the entire device, and a tensioning mechanism 2 and a shaking mechanism 3 are respectively arranged between the two strip plates 1;

[0030] The tensioning mechanism 2 includes a spring rod 25 fixedly connected to the bottom of the square plate 4 and a driven shaft 22 and a driving shaft 23 respectively connected to the adjacent surfaces of the two strip plates 1 through a bearing. One end of the driving shaft 23 extends through the outer wall of the strip plate 1 and is fixedly connected to a transmission motor 21 through a coupling. The transmission motor 21 is fixedly installed on the outer wall of the strip plate 1 through a motor frame. The transmission motor 21 is a servo motor, which provides power output for the entire device. The outer walls of the driving shaft 23 and the driven shaft 22 are fixedly sleeved with a transmission roller 24. The spring The other end of the rod 25 is fixedly connected with a circular ring block 26, and the inner wall of the circular ring block 26 is rotatably connected with a circular shaft 27 through a second bearing. The outer walls of both ends of the circular shaft 27 are fixedly sleeved with tension rollers 28. A conveyor belt 29 is transmission-connected between the two transmission rollers 24 and the tension roller 28. The surface of the conveyor belt 29 is evenly provided with small through holes at equal intervals. The conveyor belt 29 vibrates to transport tobacco, and in combination with the through holes provided on the conveyor belt 29, it can sort out small debris or other solid particles including sand particles during the transportation of tobacco.

[0031] The shaking mechanism 3 includes a through-port 31 and a driving wheel 35 opened on the square plate 4. The driving wheel 35 is fixedly sleeved on the outer wall of the rotating shaft 32 and is fixedly connected to the rotating shaft 32 through the driving wheel 35, so that the kinetic energy on the tensioning mechanism 2 is transmitted to the shaking mechanism 3 through the driving wheel 35, providing power for the normal operation of the shaking mechanism 3. The inner wall of the through-port 31 is rotatably connected to the rotating shaft 32 through the bearing three, and the outer wall of the rotating shaft 32 is respectively fixedly connected with a driven wheel 34 and a cam 33. There are two cams 33, and the two cams 33 are symmetrically arranged about the center of the square plate 4. The cam 33 can make the overall vibration amplitude of the conveyor belt 29 consistent during the conveying process. An elastic belt 36 is connected between the driving wheel 35 and the driven wheel 34. The driving wheel 35 drives the driven wheel 34 to rotate through the elastic belt 36, and the driven wheel 34 drives the rotating shaft 32 to rotate. The rotating shaft 32 drives the cam 33 to rotate. During the rotation of the cam 33, the conveyor belt 29 will be periodically pushed up, so that the conveyor belt 29 has an up and down shaking effect during the process of conveying tobacco, which can make the distribution of tobacco leaves on the conveyor belt more even, which is beneficial to the subsequent processing steps.

[0032] Working principle: The conveyor belt 29 is wound around the outer walls of two driving rollers 24 and a tensioning roller 28. Under the elastic force of the spring rod 25 itself, the lower end of the spring rod 25 drives the ring block 26, the round shaft 27, and the tensioning roller 28 to have a downward movement tendency, so that the conveyor belt 29 is always in a tensioned state, avoiding the phenomenon of slipping when the conveyor belt 29 is used for a long time or when there is less tobacco on the conveyor belt 29, resulting in better conveying effect, and it will not delay the working period due to arranging maintenance workers for maintenance. Moreover, the transmission motor 21 drives the driving shaft 23 to rotate. With the cooperation of the driven shaft 22, the driving roller 24, and the conveyor belt 29, the tensioning roller 28 is driven to rotate, and the tensioning roller 28 drives the round shaft 27 to rotate, thus facilitating the transfer of the kinetic energy on the tensioning mechanism 2 to the jitter mechanism 3 to achieve the maximum utilization of power;

[0033] The round shaft 27 drives the driving wheel 35 to rotate. The driving wheel 35 drives the driven wheel 34 to rotate through the elastic belt 36. The driven wheel 34 drives the rotating shaft 32 to rotate, and the rotating shaft 32 drives the cam 33 to rotate. During the rotation process of the cam 33, it periodically pushes the conveyor belt 29 upward, so that the conveyor belt 29 has an up-and-down jitter effect during the process of conveying tobacco, which can make the distribution of tobacco leaves on the conveyor belt more uniform, facilitating subsequent processing procedures. Coupled with the through holes provided on the conveyor belt 29, during the conveying process of tobacco, fine debris or other solid particles including sand grains can play a sorting role.

[0034] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An automatic tensioning device for a tobacco conveyor belt, comprising a strip plate (1) and a square plate (4) fixedly connected between adjacent surfaces of two strip plates (1), characterized in that: A tensioning mechanism (2) and a shaking mechanism (3) are respectively arranged between the two strip plates (1); The tensioning mechanism (2) comprises a spring rod (25) fixedly connected to the bottom of the square plate (4) and a driven shaft (22) and a driving shaft (23) respectively rotatably connected between adjacent surfaces of the two strip plates (1) via a bearing. One end of the driving shaft (23) extends through the outer wall of the strip plate (1) and is fixedly connected to a transmission motor (21) via a coupling. The outer walls of the driving shaft (23) and the driven shaft (22) are fixedly sleeved with a transmission roller (24). The other end of the spring rod (25) is fixedly connected to a circular ring block (26). The inner wall of the circular ring block (26) is rotatably connected to a circular shaft (27) via a bearing. The outer walls of both ends of the circular shaft (27) are fixedly sleeved with tensioning rollers (28). A conveyor belt (29) is transmission-connected between the two transmission rollers (24) and the tensioning roller (28).

2. The automatic tensioning device for tobacco conveyor belt according to claim 1, characterized in that: The shaking mechanism (3) comprises a through opening (31) opened on a square plate (4) and a driving wheel (35); the inner wall of the through opening (31) is rotatably connected to a rotating shaft (32) via three bearings; the outer wall of the rotating shaft (32) is respectively fixedly connected to a driven wheel (34) and a cam (33); an elastic belt (36) is transmission-connected between the driving wheel (35) and the driven wheel (34).

3. The automatic tensioning device for tobacco conveyor belt according to claim 1, characterized in that: The conveying motor (21) is fixedly mounted on the outer wall of the strip plate (1) via a motor frame.

4. The automatic tensioning device for tobacco conveyor belt according to claim 1, characterized in that: The surface of the conveyor belt (29) is provided with fine through holes at even intervals.

5. The automatic tensioning device for tobacco conveyor belt according to claim 2, characterized in that: The driving wheel (35) is fixedly sleeved on the outer wall of the rotating shaft (32).

6. The automatic tensioning device for tobacco conveyor belt according to claim 2, characterized in that: The number of the cams (33) is two, and the two cams (33) are symmetrically arranged about the center of the square plate (4).

7. The automatic tensioning device for a tobacco conveyor belt according to claim 1, characterized in that: The bottoms of the two strip plates (1) are fixedly connected with supporting legs.

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