Belt deviation rectifying device for electronic belt scale
By designing a belt offset detection module and a correction module on the electronic belt scale, and using a wheel-type speed sensor and a guide roller correction device, the problem of inaccurate weighing caused by lateral belt offset was solved, and automatic belt correction and improved weighing accuracy were achieved.
Patent Information
- Application Number
- CN202520286383.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-21
- Publication Date
- 2026-02-10
- Estimated Expiration
- 2035-02-21
AI Technical Summary
In the tobacco production process, the belt of an electronic belt scale is prone to shifting in the lateral direction, resulting in inaccurate weighing. Existing technologies are unable to effectively detect and correct such shifts.
Design a belt alignment device for electronic belt scales, including a belt offset detection module and a correction module. The device uses a wheel speed sensor to detect belt offset and drives guide rollers through a lifting mechanism and an alignment motor to correct the belt and ensure that the belt runs in the center.
It enables automatic detection and correction of belt misalignment, ensuring the belt runs in the center and improving the accuracy and uniformity of weighing.
Smart Images
Figure CN223891728U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to tobacco production technical field, concretely relates to a belt deviation rectifying device for electronic belt scale. BACKGROUND
[0002] In the tobacco production process, a electronic belt scale is usually arranged before entering the cut tobacco drying machine in the cut tobacco processing stage, which is used to control the cut tobacco flow entering the cut tobacco drying machine, and the specific flow of the cut tobacco is calculated according to the advancing speed of the belt conveyor and the weighing value, therefore, the accuracy of the electronic belt scale is very important.
[0003] In the process of advancing with the belt, the cut tobacco usually passes through some carding mechanisms to scatter the cut tobacco and make it as evenly distributed as possible, so as to ensure the stability of the entering flow and avoid the local bulging or collapse of the material, which leads to the fluctuation of the cut tobacco flow. However, due to the high humidity of the cut tobacco at this time, even if there are carding mechanisms, small pieces are still easy to stick together, and in the actual operation process, the local imbalance of the cut tobacco distribution still occurs more or less, the imbalance problem in the advancing direction has less influence, but the distribution imbalance in the transverse direction often leads to the uneven distribution of the transverse friction of the belt, which causes the transverse deviation of the belt after a long time, and once the deviation occurs, it is difficult to return to the original position, and the subsequent cut tobacco will even aggravate the deviation problem. The uneven distribution of the deviated cut tobacco is easy to cause the overall deviation of the weighing module below the electronic belt scale, which leads to the weighing error and makes the weighing accuracy poor. Therefore, how to design a belt deviation rectifying device for electronic belt scale to detect and rectify the deviation of the belt of the electronic belt scale becomes a technical problem that the technical personnel in the field urgently need to solve. CONTENT OF THE UTILITY MODEL
[0004] The utility model aims at providing a belt deviation rectifying device for electronic belt scale to solve the above technical problems in the prior art.
[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme:
[0006] A belt deviation correcting device for an electronic belt scale, comprising a belt surface deviation detecting module, a belt surface deviation correcting module and a controller; the belt surface deviation detecting module is arranged below the belt of the electronic belt scale, the belt surface deviation detecting module comprises a detection shaft and a plurality of wheel type rotation speed sensors, each wheel type rotation speed sensor is rotationally arranged on the detection shaft, the detection shaft extends along the width direction of the belt, and the outer wheel surface of each wheel type rotation speed sensor is in rolling contact with the lower surface of the belt; the belt surface deviation correcting module comprises a left deviation correcting assembly and a right deviation correcting assembly arranged below the belt, the right deviation correcting assembly comprises a first lifting mechanism, a right deviation driving guide roller rotationally arranged at the top end of the first lifting mechanism and a first deviation correcting motor for driving the right deviation driving guide roller to rotate, a right-hand thread is arranged on the outer roller surface of the right deviation driving guide roller, and the first lifting mechanism is used for driving the right deviation driving guide roller to move up and down; the left deviation correcting assembly comprises a second lifting mechanism, a left deviation driving guide roller rotationally arranged at the top end of the second lifting mechanism and a second deviation correcting motor for driving the left deviation driving guide roller to rotate; a left-hand thread is arranged on the outer roller surface of the left deviation driving guide roller, and the second lifting mechanism is used for driving the left deviation driving guide roller to move up and down; each wheel type rotation speed sensor, the first deviation correcting motor, the first lifting mechanism, the second deviation correcting motor and the second lifting mechanism are electrically connected with the controller respectively.
[0007] Preferably, each wheel type rotation speed sensor is equally spaced on the axial direction of the detection shaft.
[0008] Preferably, the number of belt surface deviation detecting modules is multiple, and each belt surface deviation detecting module is equally spaced along the running direction of the belt.
[0009] Preferably, the number of wheel type rotation speed sensors arranged on the detection shaft is at least 10.
[0010] Preferably, the boundary of the outermost wheel type rotation speed sensor is aligned with or exceeds the boundary of the belt.
[0011] Preferably, the number of right deviation driving guide rollers is at least two, and each right deviation driving guide roller is driven to rotate by the first deviation correcting motor.
[0012] Preferably, the number of left deviation driving guide rollers is at least two, and each left deviation driving guide roller is driven to rotate by the second deviation correcting motor.
[0013] Preferably, the first lifting mechanism comprises two lifting assemblies arranged on the left and right sides of the belt respectively, and a rotating shaft, the lifting assembly comprises a lifting cylinder, a sliding block and two lifting rails, two ends of the sliding block are slidably connected with the two lifting rails respectively, and the upper end of the cylinder rod of the lifting cylinder is connected with the bottom of the sliding block.
[0014] The electronic belt scale belt deviation correction device has the advantages that:
[0015] The electronic belt scale belt deviation correction device can detect the deviation of the belt of the electronic belt scale, and can also correct the deviation, so that the weighing accuracy is good. BRIEF DESCRIPTION OF DRAWINGS
[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed in the embodiments will be briefly introduced, and the specific embodiments of the present application will be further described in detail with reference to the drawings, in which
[0017] Figure 1 A schematic view of the electronic belt scale belt deviation correction device provided by the embodiments of the present application is shown in the figure.
[0018] Figure 2 A top view of the electronic belt scale when the belt deviates to the right is shown in the figure.
[0019] Figure 3 A side view of the electronic belt scale when the belt deviates to the right is shown in the figure.
[0020] Figure 4 A top view of the electronic belt scale when the belt deviates to the left is shown in the figure.
[0021] Figure 5 A side view of the electronic belt scale when the belt deviates to the left is shown in the figure.
[0022] Markings in the drawings:
[0023] 11, belt; 21, detection shaft, 22, wheel type rotating speed sensor;
[0024] 31, first lifting mechanism, 32, rotating shaft, 33, right deviation driving guide roller;
[0025] 34, lifting cylinder, 35, lifting guide rail, 36, slider;
[0026] 41, second lifting mechanism, 42, left deflection main driven guide roller. DETAILED DESCRIPTION
[0027] Various example embodiments of the present application will now be described in detail with reference to the accompanying drawings. It should be noted that the relative arrangements, numerical expressions, and numerical values of the components and steps set forth in these embodiments are not limiting to the scope of the present application unless otherwise specifically stated.
[0028] The following description of at least one example embodiment is merely exemplary in nature and is in no way intended to limit the application or its application or uses.
[0029] Techniques, methods, and apparatus known to those of ordinary skill in the relevant art can not be discussed in detail herein. However, where appropriate, such techniques, methods, and apparatus should be considered as part of the description of the present application.
[0030] In all of the examples shown and discussed herein, any specific values should be interpreted as merely illustrative and not as a limitation. Thus, other examples of the example embodiments can have different values.
[0031] As Figures 1 to 5The utility model discloses an electronic belt scale is provided with the belt deviation correction device, and the belt deviation correction device includes the belt face offset detection module, the belt face offset correction module and the controller, the belt face offset detection module sets below the belt 11 of electronic belt scale, the belt face offset detection module includes detection shaft 21 and a plurality of wheel type rotation speed sensor 22, and each wheel type rotation speed sensor 22 is rotationally arranged on the detection shaft 21, and the detection shaft 21 extends along the width direction of the belt, and the outer wheel surface of each wheel type rotation speed sensor is in rolling contact with the lower surface of the belt 11, the belt face offset correction module includes the left bias correction subassembly and the right bias correction subassembly that set below the belt, the right bias correction subassembly includes the first lifting mechanism 31, the right bias active guide roller 33 that rotationally sets in the top of the first lifting mechanism 31 and is used for driving the right bias active guide roller rotates the first deviation correction motor, and the outer roller surface of the right bias active guide roller 33 is provided with right-hand thread, and the first lifting mechanism is used to drive the right bias active guide roller to move up and down along with it, the left bias correction subassembly includes the second lifting mechanism 41, the left bias active guide roller 42 that rotationally sets in the top of the second lifting mechanism and is used for driving the left bias active guide roller rotates the second deviation correction motor, and the outer roller surface of the left bias active guide roller is provided with left-hand thread, and the second lifting mechanism is used to drive the left bias active guide roller to move up and down along with it, and each wheel type rotation speed sensor, the first deviation correction motor, the first lifting mechanism, the second deviation correction motor and the second lifting mechanism are electrically connected with the controller respectively.
[0032] The electronic belt scale belt deviation correction device provided by the utility model detects the deviation of the belt by the belt face offset detection module, and then the controller controls the first lifting mechanism 31 and the first deviation correction motor or the second lifting mechanism 41 and the second deviation correction motor in the belt face offset correction module to drive the belt to return to the designed position, so that the belt can always run in the central position. It can be seen that the utility model can detect the deviation of the belt of the electronic belt scale and also can realize deviation correction, thereby ensuring the weighing accuracy.
[0033] Specifically, each wheel type rotation speed sensor 22 is equally spaced on the axial direction of the detection shaft 21.
[0034] In an embodiment, the number of belt face offset detection modules is multiple, and each belt face offset detection module is equally spaced in the running direction of the belt, so that the deviation of the belt can be better detected. At this time, the belt face offset correction module is arranged between two adjacent belt face offset detection modules.
[0035] Specifically, the number of the wheel speed sensors 22 arranged on the detection shaft is at least 10. At this time, the width (i.e. the length in the axial direction of the detection shaft) of the outer wheel surface of a single wheel speed sensor can be less than the set offset of the belt, and the boundary of the outermost wheel speed sensor is aligned with or exceeds the boundary of the belt.
[0036] It can be understood that the wheel speed sensor 22 refers to a speed sensor with a rotating wheel, and the speed sensor can be specifically selected as a relatively small sensor such as an encoder, which can be coaxially installed with the rotating wheel. Figure 1 、 Figure 2 and Figure 4 The arrow in the figure indicates the running direction of the belt.
[0037] The detection principle of the belt 11 offset detection module for detecting the offset of the belt 11 is as follows:
[0038] During the running of the belt 11 at the designed position (i.e. the central position), the belt 11 can contact the outer wheel surface of each wheel speed sensor 22 and drive each wheel speed sensor to rotate by friction to obtain a rotation speed signal, which is sent to the controller for logical judgment.
[0039] When the belt is offset, as shown in Figure 2 and Figure 4 , the belt 11 is offset to the left or right, and when the offset reaches a certain degree, the outermost wheel speed sensor 22 is no longer in contact with the belt and loses power, so it no longer rotates, or the contact is reduced and the rotation speed is reduced. At this time, it means that the belt has an offset as shown in the figure, and the specific direction of the offset is opposite to the side of the wheel speed sensor that stops rotating. According to the width value of the wheel speed sensor, the offset amount can be roughly judged.
[0040] Further, the number of the right offset active guide rollers 33 is at least two, and each of the right offset active guide rollers 33 is driven to rotate by the first offset correction motor, so that the first offset correction motor can drive each right offset active guide roller to rotate synchronously.
[0041] Specifically, the number of the left offset active guide rollers 42 is at least two, and each of the left offset active guide rollers 42 is driven to rotate by the second offset correction motor, so that the second offset correction motor can drive each left offset active guide roller to rotate synchronously.
[0042] Furthermore, the first lifting mechanism 31 includes two lifting components and a rotating shaft 32, which are arranged opposite to each other on the left and right sides of the belt. Each lifting component includes a lifting cylinder 34, a slider 36, and two lifting guide rails 35. The two ends of the slider are slidably engaged with the two lifting guide rails. The upper end of the cylinder rod of the lifting cylinder is connected to the bottom of the slider. The two ends of the rotating shaft are connected to the sliders in the two lifting components. Using this design, the lifting cylinder 34 drives the slider to move up and down along the lifting guide rails, which in turn drives the rotating shaft to move up and down, thereby causing the right-side active guide roller to move up and down as well. It is understood that the right-side active guide roller is mounted on the rotating shaft, and the first correction motor drives the rotating shaft to rotate; the lifting cylinder is electrically connected to the controller.
[0043] Specifically, the second lifting mechanism 41 has the same structure as the first lifting mechanism 31. It can be understood that when the right-biased active guide roller moves upward to its highest point under the drive of the first lifting mechanism, it rolls into contact with the lower surface of the belt; similarly, when the left-biased active guide roller moves upward to its highest point under the drive of the second lifting mechanism, it rolls into contact with the lower surface of the belt.
[0044] The general working process of this utility model is as follows:
[0045] When the belt shifts to the right, such as Figure 2 The belt shown bends downwards, at which point the left side (i.e.) Figure 2 The wheel speed sensor 22 at the upper boundary of the belt no longer contacts the belt and loses speed. The controller determines that a deviation has occurred based on the collected signal.
[0046] The controller controls the right-side correction assembly to operate, raising the right-side active guide roller via the first lifting mechanism 31 so that it contacts the lower surface of the belt. Figure 3 As shown, the right-side active guide roller is driven to rotate by the first correction motor. During the rotation of the right-side active guide roller, due to the directionality of its right-hand thread, the belt moves to the left under the drive of the friction between the right-hand thread and the lower surface of the belt. When the speed sensor of the wheel that has lost speed recovers, the controller determines that the belt has been corrected and stops the correction work. The first correction motor stops running, and the first lifting mechanism 31 lowers the right-side active guide roller so that it is no longer in contact with the lower surface of the belt.
[0047] Similarly, as Figure 4 and Figure 5 The image shows the situation when the belt shifts to the left (the belt bends upwards). The belt can be corrected using the same correction principle as described above.
[0048] The utility model discloses can carry out automatic detection to the deviation situation of the belt of electronic belt scale, can also carry out horizontal deviation rectification, make the belt can always run in the central position to can make the distribution of material more uniform, when weighing, do not occur weight deviation, further guarantee the accuracy of weighing.
[0049] Although some specific embodiments of the utility model have been described in detail by examples, those skilled in the art should understand that the above examples are only for illustration, and are not intended to limit the scope of the utility model. Those skilled in the art should understand that the above embodiments can be modified without departing from the scope and spirit of the utility model. The scope of the utility model is defined by the appended claims.
Claims
1. A belt alignment device for an electronic belt scale, characterized in that, It includes a belt offset detection module, a belt offset correction module, and a controller. The belt offset detection module is located below the belt of the electronic belt scale. The belt offset detection module includes a detection shaft and several wheel-type speed sensors. Each wheel-type speed sensor is rotatably mounted on the detection shaft, which extends along the width direction of the belt. The outer wheel surface of each wheel-type speed sensor makes rolling contact with the lower surface of the belt. The belt offset correction module includes a left offset correction component and a right offset correction component located below the belt. The right offset correction component includes a first lifting mechanism, a right offset active guide roller rotatably mounted at the top of the first lifting mechanism, and a mechanism for driving the right offset active guide roller. The guide roller rotates via a first correction motor. The outer roller surface of the right-biased active guide roller is provided with a right-hand thread. The first lifting mechanism is used to drive the right-biased active guide roller to move up and down accordingly. The left-biased correction assembly includes a second lifting mechanism, a left-biased active guide roller rotatably disposed at the top of the second lifting mechanism, and a second correction motor for driving the left-biased active guide roller to rotate. The outer roller surface of the left-biased active guide roller is provided with a left-hand thread. The second lifting mechanism is used to drive the left-biased active guide roller to move up and down accordingly. Each of the wheel speed sensors, the first correction motor, the first lifting mechanism, the second correction motor, and the second lifting mechanism are electrically connected to the controller.
2. The belt alignment device for electronic belt scales according to claim 1, characterized in that, The wheel-type speed sensors are evenly distributed along the axial direction of the detection shaft.
3. The belt alignment device for electronic belt scales according to claim 1, characterized in that, There are multiple belt offset detection modules, and each belt offset detection module is distributed at equal intervals along the traveling direction of the belt.
4. The belt alignment device for electronic belt scales according to claim 1, characterized in that, The number of wheel-type speed sensors installed on the detection shaft is at least 10.
5. The belt alignment device for electronic belt scales according to claim 1, characterized in that, The boundary of the outermost wheel speed sensor is aligned with or extends beyond the boundary of the belt.
6. The belt alignment device for electronic belt scales according to claim 1, characterized in that, The number of right-biasing active guide rollers is at least two, and each of the right-biasing active guide rollers is driven to rotate by the first correction motor.
7. The belt alignment device for electronic belt scales according to claim 1, characterized in that, The number of left-biasing active guide rollers is at least two, and each of the left-biasing active guide rollers is driven to rotate by the second correction motor.
8. The belt alignment device for an electronic belt scale according to any one of claims 1 to 7, characterized in that, The first lifting mechanism includes two lifting components and a rotating shaft arranged opposite to each other on the left and right sides of the belt. Each lifting component includes a lifting cylinder, a slider, and two lifting guide rails. The two ends of the slider are respectively slidably engaged with the two lifting guide rails. The upper end of the cylinder rod of the lifting cylinder is connected to the bottom of the slider. The two ends of the rotating shaft are respectively connected to the sliders of the two lifting components.