A conveyor belt straightening device

Abstract

This utility model belongs to the field of conveyor belt straightening technology, and specifically relates to a conveyor belt straightening device, including a frame, a drive roller, a driven roller, a detection mechanism, and two straightening mechanisms. The drive roller can rotate around its own axis at a preset rotation frequency; the driven roller is slidably disposed on the frame along a first direction and can rotate around its own axis. The conveyor belt is tensioned and wound around the drive roller and the driven roller. Under the action of the detection mechanism, the tension frequency on both sides of the conveyor belt can be dynamically detected, thereby reflecting the problems existing in the conveyor belt during the dynamic process. The two straightening mechanisms adjust the position of the corresponding end of the driven roller according to the tension frequency on both sides, thereby keeping the tension frequency on both sides balanced, so as to avoid the problem of the conveyor belt running off track after being put on the machine. Compared with the traditional technology of straightening the conveyor belt in a static state, the straightened conveyor belt can be used directly without secondary adjustment, thus avoiding the impact on production efficiency.

Description

Technical Field

[0001] This utility model relates to the field of conveyor belt straightening technology, and in particular to a conveyor belt straightening device. Background Technology

[0002] In cigarette production, the smooth transport of cigarette briquettes plays a crucial role in the overall smoothness of the production process and the quality of the product. In other words, the conveyor belt, as the essential carrier for transporting cigarette briquettes, significantly impacts the transport efficiency through its operational stability. Only when the conveyor belt operates stably can the cigarettes maintain the correct posture and spacing during transport, thus preventing problems such as cigarette collisions and compression, and ensuring production continuity and product quality.

[0003] Conveyor belts may deform to varying degrees during transportation, storage, and replacement, which can cause them to run off-track when running on the machine. Deformed and off-track conveyor belts can compress cigarettes, flatten them, and affect product quality. In severe cases, they can cause uneven distribution of cigarettes or even cause cigarettes to fall off the conveyor belt, interrupting the conveying process.

[0004] Currently, when a conveyor belt runs off-track, the solution is usually to replace it with a new one or to stop the machine to adjust it. Replacing the conveyor belt with a new one can easily increase production costs, while stopping the machine to adjust the conveyor belt is time-consuming, labor-intensive, and also affects production efficiency.

[0005] Therefore, the above problems urgently need to be solved. Utility Model Content

[0006] The purpose of this invention is to provide a conveyor belt straightening device to complete the detection and straightening of the conveyor belt before it is put into the machine, so as to avoid the phenomenon of deviation when it is put into the machine, thereby avoiding the impact on production efficiency.

[0007] To achieve this objective, the present invention adopts the following technical solution:

[0008] A conveyor belt straightening device, used for straightening a conveyor belt, includes:

[0009] frame;

[0010] The drive roller is rotatably connected to the frame and can rotate about its own axis at a preset rotation frequency;

[0011] The driven roller is slidably disposed on the frame along the first direction and is capable of rotating about its own axis; the conveyor belt is tensioned and wound around the driving roller and the driven roller.

[0012] The detection mechanism is vertically positioned above the conveyor belt and configured to detect the tension frequency of the conveyor belt on both sides along a second direction, wherein the first direction is perpendicular to the second direction.

[0013] Two straightening mechanisms are respectively connected to the two ends of the driven roller along the second direction and are configured to adjust the position of the corresponding end along the first direction based on the tension frequency on both sides, so that the tension frequency on both sides of the conveyor belt is in dynamic equilibrium.

[0014] Preferably, the two side walls of the frame are provided with sliding grooves along the first direction;

[0015] The driven roller includes a driven shaft and a driven roller body rotatably connected to the driven shaft. The two ends of the driven shaft are respectively adapted to slide in two grooves.

[0016] Preferably, the correction mechanism is a screw, which is arranged along the first direction and screwed to the driven shaft.

[0017] Preferably, the drive roller includes a drive shaft rotatably connected to the frame and a drive roller body fixedly disposed on the drive shaft;

[0018] The conveyor belt straightening device also includes a drive mechanism, which is connected to the drive shaft.

[0019] Preferably, a connecting key is provided between the drive shaft and the drive roller.

[0020] Preferably, the drive mechanism includes:

[0021] The bracket is fixed to the frame;

[0022] The motor has a conveyor shaft connected to the drive shaft;

[0023] The speed reducer is connected to the motor drive.

[0024] Preferably, the detection mechanism is a vibration frequency detector.

[0025] Preferably, the conveyor belt straightening device further includes a vision inspection system, which is mounted on the frame and located in the middle of the conveyor belt. The vision inspection system is used to detect the amount of conveyor belt sagging around the drive roller and the driven roller.

[0026] Preferably, the drooping amount is ≤3mm.

[0027] Preferably, the inner side of the conveyor belt is provided with a first tooth pattern;

[0028] Both the driving roller and the driven roller have second teeth on their outer peripheral walls that mesh with the first teeth.

[0029] The beneficial effects of this utility model are:

[0030] The conveyor belt straightening device of this utility model first tensions the conveyor belt to be loaded onto the machine and wraps it around the driving roller and the driven roller. The driving roller is controlled to rotate at a preset rotation frequency, thereby simulating the running state of the conveyor belt after it is loaded onto the machine. During the movement of the conveyor belt, the tension frequency on both sides of the conveyor belt can be detected by the detection mechanism. The two straightening mechanisms adjust the position of the corresponding end of the driven roller according to the tension frequency on both sides, so as to keep the tension frequency on both sides balanced, thereby avoiding the problem of the conveyor belt running off track after loading onto the machine. Moreover, the straightened conveyor belt can be used directly without secondary adjustment, thus avoiding the impact on production efficiency. Attached Figure Description

[0031] Figure 1 This is a schematic diagram of the conveyor belt straightening device in an embodiment of this utility model;

[0032] Figure 2 yes Figure 1 An explosion diagram.

[0033] In the picture:

[0034] 100. Conveyor belt;

[0035] 1. Frame; 11. Side wall; 111. Slide groove; 12. Bottom wall; 13. Base;

[0036] 2. Drive roller; 21. Drive shaft; 22. Drive roller body; 23. Connecting key;

[0037] 3. Driven roller; 31. Driven shaft; 32. Driven roller body;

[0038] 4. Correctional institutions;

[0039] 5. Drive mechanism; 51. Bracket; 52. Motor; 53. Reducer; 54. Power distribution control box. Detailed Implementation

[0040] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0041] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0042] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0043] In the description of this embodiment, the terms "upper," "lower," "left," and "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0044] Please see Figures 1 to 2This embodiment proposes a conveyor belt straightening device for straightening a conveyor belt 100. It includes a frame 1, a drive roller 2, a driven roller 3, a detection mechanism, and two straightening mechanisms 4. The drive roller 2 is rotatably connected to the frame 1 and can rotate around its own axis at a preset rotation frequency. The driven roller 3 is slidably disposed on the frame 1 along a first direction and can rotate around its own axis. The conveyor belt 100 is tensioned and wound around the drive roller 2 and the driven roller 3. The detection mechanisms are vertically disposed above the conveyor belt 100 and configured to detect the conveyor belt 100 along a second direction. The tension frequencies on both sides of the conveyor belt 100 are perpendicular to the second direction. The tension frequency of the conveyor belt 100 refers to the vibration frequency generated by the tension change during the operation of the conveyor belt 100. When the conveyor belt 100 deforms, the degree of deformation on both sides is different. Therefore, the tension frequencies on both sides of the conveyor belt 100 will be different during operation. The two straightening mechanisms 4 are respectively connected to the two ends of the driven roller 3 along the second direction and are configured to adjust the position of the corresponding end along the first direction based on the tension frequencies on both sides, so that the tension frequencies on both sides of the conveyor belt 100 are in dynamic equilibrium.

[0045] Understandably, the conveyor belt 100 to be installed is first tensioned and wound around the drive roller 2 and the driven roller 3. The drive roller 2 is then rotated at a preset rotation frequency to simulate the running state of the conveyor belt 100 after it is installed on the machine. The preset rotation frequency of the drive roller 2 can be determined according to the actual working conditions and is not specifically limited here. During the movement of the conveyor belt 100, the tension frequency on both sides of the conveyor belt 100 can be dynamically detected by the detection mechanism, thereby reflecting any problems that may exist in the dynamic operation of the conveyor belt 100. The two correction mechanisms 4 adjust the position of the corresponding ends of the driven roller 3 according to the tension frequency on both sides, so as to keep the tension frequency on both sides balanced and avoid the problem of the conveyor belt 100 running off track after it is installed on the machine. The corrected conveyor belt 100 can be used directly without secondary debugging, thus avoiding any impact on production efficiency.

[0046] In this embodiment, the frame 1 includes two side walls 11 and a bottom wall 12. The two side walls 11 are spaced apart on the bottom wall 12 to form a "U" shape with the bottom wall 12. The driven roller 3 includes a driven shaft 31 and a driven roller body 32 rotatably connected to the driven shaft 31. The two ends of the driven shaft 31 are connected to the two side walls 11. During operation, the conveyor belt 100 can make the driven roller body 32 rotate around the axis of the driven shaft 31 to simulate the operating state of the conveyor belt 100 when it is mounted on the machine. This facilitates the accurate reflection of the tension frequency of the conveyor belt 100 during operation, and makes it easier for the detection mechanism to accurately measure its tension frequency to ensure the accuracy of the correction results.

[0047] Furthermore, each of the two side walls 11 is provided with a sliding groove 111 along the first direction, which is adapted to slide the driven shaft 31. It can be understood that under the action of the two straightening mechanisms 4, the two ends of the driven shaft 31 can slide in the corresponding sliding groove 111, thereby adjusting the tension on the corresponding side of the conveyor belt 100 so that the tension frequency on both sides of the conveyor belt 100 is in dynamic equilibrium.

[0048] The correction mechanism 4 is a screw, which is set along the first direction and screwed to the driven rotating shaft 31. It can be understood that the length direction of the screw is consistent with the length direction of the slide 111, and since the screw is screwed to the driven rotating shaft 31, it can prevent the driven roller 32 from driving the driven rotating shaft 31 to rotate during the rotation process, so as to ensure the accuracy of the detection mechanism.

[0049] For example, if the tension frequency of a normal conveyor belt 100 during operation is 45Hz, the two sides of the conveyor belt 100 to be tested along the second direction are defined as the left and right sides respectively. If the measured frequency of the left side is 45Hz and that of the right side is 50Hz, it proves that the right side of the conveyor belt 100 is deformed. By adjusting the corresponding screw on the right side, the right side of the conveyor belt 100 can be further tensioned. After a period of time, the tension frequency on the right side is measured again by the testing mechanism. If the tension frequency on the right side still deviates from that on the left side, it needs to be adjusted again. When adjusting the screw, a digital torque wrench in the prior art can be used to make it easier to judge the rotation angle during adjustment.

[0050] In this embodiment, the drive roller 2 includes a drive shaft 21 rotatably connected to the frame 1 and a drive roller body 22 fixedly mounted on the drive shaft 21; the conveyor belt straightening device also includes a drive mechanism 5, which is connected to the drive shaft 21 in a transmission manner. It is understood that the drive mechanism 5 can drive the drive shaft 21 to rotate at a preset rotation frequency, thereby simulating the operating state of the conveyor belt 100 after it is mounted on the machine. A connecting key 23 is provided between the drive shaft 21 and the drive roller body 22 to ensure synchronous rotation between them, thereby further guaranteeing the accuracy of the detection mechanism.

[0051] In addition, the drive mechanism 5 includes a bracket 51, a motor 52, and a reducer 53. The bracket 51 is fixed to the frame 1; the motor 52 has a conveying shaft connected to the drive shaft 21; and the reducer 53 is drively connected to the motor 52. The motor 52 is connected to a power distribution control box 54, which supplies power to the motor 52. The power distribution control box 54 integrates a PLC controller, which, under the control of the PLC controller, can set the operating time, frequency, and start / stop control of the motor 52, ensuring safe system operation.

[0052] Furthermore, the frame 1 also includes a base 13, with the bottom wall 12 and the support 51 spaced apart on the base 13. The support 51 is fixed to the base 13 by four screws, which can ensure the stability of the motor 52 during operation, so as to avoid the vibration generated by the motor 52 during operation from affecting the tension frequency of the conveyor belt 100, thereby improving the accuracy of the measurement by the detection mechanism.

[0053] In this embodiment, the detection mechanism is preferably a vibration frequency detector in the prior art. The vibration frequency detector measures the tension frequency of the conveyor belt 100 in a non-contact manner, thereby avoiding any impact on the tension frequency of the conveyor belt 100 during the detection process, and ensuring the accuracy of the tension frequency acquisition of the conveyor belt 100. Of course, in some other feasible embodiments, the detection mechanism can also be a laser vibration meter or other detection equipment in the prior art, and no specific limitation is made here.

[0054] Furthermore, the conveyor belt straightening device also includes a vision inspection system, which is installed on the frame 1 and located in the middle of the conveyor belt 100. The vision inspection system is used to detect the sag of the conveyor belt 100 wound around the drive roller 2 and the driven roller 3. It is understood that to ensure the conveyor belt 100 can start running, it needs an initial tension when it is fitted onto the drive roller 2 and the driven roller 3. This initial tension can be obtained by changing the position of the driven roller 3 through the two straightening mechanisms 4. If the initial tension is insufficient, the conveyor belt 100 will sag. If the sag exceeds a threshold, the conveyor belt 100 only needs to be re-tensioned by changing the position of the driven roller 3 through the straightening mechanism 4. Preferably, the vision inspection system is a detection structure such as a CCD camera or a smart camera found in the prior art; no specific limitations are imposed here.

[0055] Preferably, the sag is ≤3mm. It is understood that if the initial tension is insufficient, the sag of the conveyor belt 100 may easily exceed 3mm, thus affecting the stability of the conveyor belt 100 during operation. In this case, further tensioning is required through two straightening mechanisms 4.

[0056] Furthermore, the inner surface of the conveyor belt 100 is provided with a first tooth pattern; the outer peripheral walls of both the drive roller 2 and the driven roller 3 are provided with a second tooth pattern that meshes with the first tooth pattern. It is understood that when installing the conveyor belt 100, the first tooth pattern on the inner surface of the conveyor belt 100 meshes with the second tooth pattern on the drive roller 2 and the driven roller 3 to further ensure the stability of the conveyor belt 100 during operation.

[0057] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A conveyor belt straightening device for straightening a conveyor belt (100), characterized in that, include: Rack (1); The active roller (2) is rotatably connected to the frame (1) and can rotate around its own axis at a preset rotation frequency; The driven roller (3) is slidably disposed on the frame (1) along the first direction and is able to rotate about its own axis. The conveyor belt (100) is tensioned and wound around the driving roller (2) and the driven roller (3). The detection mechanism is vertically disposed above the conveyor belt (100) and configured to detect the tension frequency of the conveyor belt (100) on both sides along a second direction, wherein the first direction is perpendicular to the second direction. Two straightening mechanisms (4) are respectively connected to the two ends of the driven roller (3) along the second direction and are configured to adjust the position of the corresponding end of the driven roller (3) along the first direction based on the tension frequency on both sides, so that the tension frequency on both sides of the conveyor belt (100) is in dynamic equilibrium.

2. The conveyor belt straightening device according to claim 1, characterized in that, The frame (1) has sliding grooves (111) on both side walls (11) along the first direction; The driven roller (3) includes a driven shaft (31) and a driven roller body (32) rotatably connected to the driven shaft (31). The two ends of the driven shaft (31) are respectively adapted to slide in two grooves (111).

3. The conveyor belt straightening device according to claim 2, characterized in that, The correction mechanism (4) is a screw, which is arranged along the first direction and screwed to the driven shaft (31).

4. The conveyor belt straightening device according to claim 1, characterized in that, The active roller (2) includes an active rotating shaft (21) rotatably connected to the frame (1) and an active roller body (22) fixedly disposed on the active rotating shaft (21); The conveyor belt straightening device also includes a drive mechanism (5), which is connected to the drive shaft (21) in a transmission manner.

5. The conveyor belt straightening device according to claim 4, characterized in that, A connecting key (23) is provided between the active rotating shaft (21) and the active roller (22).

6. The conveyor belt straightening device according to claim 4, characterized in that, The drive mechanism (5) includes: A bracket (51) is fixed to the frame (1); The motor (52) has a conveyor shaft connected to the drive shaft (21); The reducer (53) is connected to the motor (52) in a transmission.

7. The conveyor belt straightening device according to claim 1, characterized in that, The testing device is a vibration frequency detector.

8. The conveyor belt straightening device according to claim 1, characterized in that, The conveyor belt straightening device also includes a vision inspection system, which is set on the frame (1) and located in the middle of the conveyor belt (100). The vision inspection system is used to detect the sag of the conveyor belt (100) wound around the drive roller (2) and the driven roller (3).

9. The conveyor belt straightening device according to claim 8, characterized in that, The sag is ≤3mm.

10. The conveyor belt straightening device according to claim 1, characterized in that, The inner side of the conveyor belt (100) is provided with a first tooth pattern; The outer peripheral walls of both the driving roller (2) and the driven roller (3) are provided with second teeth that mesh with the first teeth.

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