Dual-axle conveyor belt system

Abstract

The utility model provides a kind of double-shaft conveying belt system, is constituted by two conveying belt groups of independently controllable running speed, the material transported is in the mode of being straddled in two conveying belt groups, the position of material is detected in the conveying process by sensor, when the material position is detected to produce deviation, the running speed of two conveying belt groups is adjusted, so that speed difference is generated between the two, and then the material is corrected deviation to guide the position of material, so that the material can be continuously transported at high speed, and still can maintain high-precision deviation correction.

Description

Technical Field

[0001] This utility model relates to a conveying system, and more particularly to a dual-axis conveyor belt system with two sets of independently controllable conveying speeds. Background Technology

[0002] Transporting materials from one site to another for processing or storage is an essential step in warehousing systems or factory product assembly and processing. Therefore, how to transport materials quickly and reliably has become a crucial issue. The most common current method is to use a servo slide capable of multi-axis movement (X, Y, Z, and θ axes) combined with multiple CCD (charge-coupled device) lenses for visual positioning and vacuum nozzles for material handling, thus achieving multi-axis interactive material transfer.

[0003] However, servo slides are prone to vibration during high-speed movement, so this problem often needs to be overcome by using a base with high stability, such as a platform base made of marble. However, this makes the entire servo slide more expensive and less easy to adjust and expand. Furthermore, when the materials being transported are sheet foils such as panels, circuit boards, and battery cells, the sheet foils will inevitably shift in position during transportation. The existing servo slide architecture cannot effectively correct this, resulting in misalignment when picking up the material using vacuum suction. This requires more positioning and correction equipment to solve the misalignment problem, which makes the overall equipment occupy a lot of space and is not cheap. At the same time, using such positioning and correction methods will inevitably affect the transportation speed of sheet foils, making it difficult to achieve continuous and high-speed transportation.

[0004] In view of the deficiencies in the prior art, this utility model proposes a dual-axis conveyor belt system to effectively solve the above problems. Utility Model Content

[0005] The main objective of this invention is to provide a dual-axis conveyor belt system that uses a dual-axis independent control method to separately regulate two parallel conveyor belt groups to create a speed difference, thereby enabling offset correction and compensation for the transported materials under continuous and high-speed transport conditions.

[0006] This utility model proposes a dual-shaft conveyor belt system, comprising: two conveyor belt groups arranged side by side on a single horizontal plane along a conveying direction, and the two conveyor belt groups can be independently controlled to operate at a speed. The two conveyor belt groups jointly carry the material along the conveying direction, and the material is positioned across the two conveyor belt groups. Multiple upper pressing rollers are installed above the two conveyor belt groups to press the material straddling the two conveyor belt groups; and At least one sensor is used to detect the position of the material on the two conveyor belt sets; when the material is detected to be deviating, the running speed of the two conveyor belt sets is adjusted to create a speed difference between the two conveyor belt sets, thereby correcting the position of the material.

[0007] Preferably, each of the two conveyor belt groups has multiple conveyor belts, which are spaced apart by multiple gaps.

[0008] Preferably, the multiple conveyor belts have the same width.

[0009] Preferably, the widths of the multiple conveyor belts are different.

[0010] Preferably, the sensor is positioned within the multiple gaps.

[0011] Preferably, the two conveyor belt sets have a feed end and a discharge end, the material is fed into the two conveyor belt sets through the feed end and discharged through the discharge end.

[0012] Preferably, the conveying direction of the two conveyor belt sets is from the feed end to the discharge end.

[0013] Preferably, the sensor is a contrast-type photoelectric sensor.

[0014] Preferably, the comparative photoelectric sensor is an optical fiber sensor.

[0015] Preferably, the sensor is an image sensor.

[0016] Preferably, the sensor is a charge-coupled device (CCD) sensor.

[0017] Preferably, it also includes a bracket for mounting the sensor. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the dual-shaft conveyor belt system of this utility model.

[0019] Figures 2A-2E This is a schematic diagram illustrating the material transport operation of the dual-shaft conveyor belt system of this utility model.

[0020] Figures 3A-3B This is a schematic diagram of an embodiment of the sensor for the dual-axis conveyor belt system of this utility model.

[0021] Figure Labels 10 Twin-shaft conveyor belt system 101 Feed End 102 discharge end 103 Conveying Direction 11 First Conveyor Belt Group 111 First Controller 112 gap 12 Second Conveyor Belt Group 121 Second Controller 122 gap 20 pressing rollers 30 sensors 301 First Fiber Optic Sensor 302 Second Fiber Optic Sensor 31' First Fiber Optic Sensor 32' Second Fiber Optic Sensor 303 Image Sensor 40 bases 50 supports 70 materials L-light signal. Detailed Implementation

[0022] To make the advantages, spirit, and features of this utility model more readily apparent, detailed descriptions and discussions will follow with reference to the embodiments and accompanying drawings. It should be noted that these embodiments are merely representative examples of this utility model and are not intended to limit the scope of the invention or the claims to these specific embodiments. The purpose of providing these embodiments is solely to make the disclosure of this utility model more thorough and easily understood.

[0023] The terminology used in the various embodiments disclosed herein is for the purpose of describing particular embodiments only and is not intended to limit the various embodiments disclosed herein. Unless explicitly indicated otherwise, the singular forms used also include the plural forms. Unless otherwise specified, all terms used in this specification (including technical and scientific terms) have the same meaning as commonly understood by one of ordinary skill in the art to which the various embodiments disclosed herein pertain. The foregoing terms (such as those defined in a general dictionary) are to be interpreted as having the same meaning as in the context of the same technical field and are not to be interpreted as having an idealized or overly formal meaning unless explicitly defined in the various embodiments disclosed herein.

[0024] The biaxial conveyor belt system 10 disclosed in this utility model can be found in [link to utility model]. Figure 1It includes two conveyor belt groups (first conveyor belt group 11 and second conveyor belt group 12), multiple upper pressing rollers 20, and at least one sensor 30. A base 40 is used to mount the first conveyor belt group 11, the second conveyor belt group 12, the upper pressing rollers 20, and the sensor 30. Each conveyor belt group (first conveyor belt group 11 and second conveyor belt group 12) has multiple conveyor belts. As shown in the figure, the base 40 is roughly in the form of a metal frame, but this is only for illustration; in actual applications, it can be adjusted and changed according to requirements.

[0025] The type and material of the first conveyor belt group 11 and the second conveyor belt group 12 are not particularly limited. For example, they can be flat conveyor belts, stainless steel conveyor belts, PVC conveyor belts, etc. They have a feed end 101 and a discharge end 102. The conveying direction 103 of the first conveyor belt group 11 and the second conveyor belt group 12 is from the feed end 101 to the discharge end 102, as shown in the figure. The upper left side of the figure is the feed end 101 of the first conveyor belt group 11 and the second conveyor belt group 12, and the lower right side of the figure is the discharge end 102 of the first conveyor belt group 11 and the second conveyor belt group 12. Therefore, the conveying direction 103 of the first conveyor belt group 11 and the second conveyor belt group 12 is from the upper left to the lower right. The first conveyor belt group 11 is located in the upper half of a horizontal plane along this conveying direction 103, while the second conveyor belt group 12 is located in the lower half of the same horizontal plane. That is, the first conveyor belt group 11 and the second conveyor belt group 12 are arranged side by side on a single horizontal plane along this conveying direction 103 (or side by side from the perspective of the conveying direction 103). In other words, the first conveyor belt group 11 and the second conveyor belt group 12 have the same feed end 101, discharge end 102 and conveying direction 103. It should be noted that this conveying direction 103 is only for illustration. In actual applications, the conveying direction 103 can also be other directions, or have various forms such as turning or non-linear travel. Furthermore, both the first conveyor belt group 11 and the second conveyor belt group 12 have multiple conveyor belts. As shown in the figure, each of the first conveyor belt group 11 and the second conveyor belt group 12 has three conveyor belts, but this number is not limited. The first conveyor belt group 11 and the second conveyor belt group 12 may also each have two or four conveyor belts. The width of each conveyor belt may be the same or different. As shown in the figure, each conveyor belt group has three conveyor belts, of which two conveyor belts have the same width and are wider than the width of the other conveyor belt, but this is not limited.

[0026] The first conveyor belt group 11 and the second conveyor belt group 12 each have an independent first controller 111 and a second controller 121. The first controller 111 and the second controller 121 control the operation of the first conveyor belt group 11 and the second conveyor belt group 12 respectively, so the running speed of the first conveyor belt group 11 and the second conveyor belt group 12 can be adjusted respectively. The material to be transported is put into the feed end 101 of the first conveyor belt group 11 and the second conveyor belt group 12, and then the position of the material is detected and monitored by the sensor 30 installed above the first conveyor belt group 11 and the second conveyor belt group 12. The following is a detailed description with reference to the figure.

[0027] Please see Figure 2A Material 70 is placed onto the first conveyor belt group 11 and the second conveyor belt group 12 through the feed end 101 on the left side of the diagram. It is important to note that material 70 is positioned across both the first conveyor belt group 11 and the second conveyor belt group 12; that is, material 70 is placed simultaneously on both conveyor belt groups 11 and 12, and is thus transported along the conveying direction 103 by the first and second conveyor belt groups 11 and 12. See the following section for further details. Figure 2B Material 70 can be sheet or foil materials such as panels, circuit boards, and battery cells. During the conveying process, multiple upper pressing rollers 20 located in the first conveyor belt group 11 and the second conveyor belt group 12 are used to press the material 70, making its conveying state more stable and less prone to deviation. During the conveying process, the position of the material 70 is detected and monitored in real time by sensor 30.

[0028] The sensor 30 part can be, for example, a fiber optic sensor or a contrast-type photoelectric sensor; please refer to [reference needed]. Figure 3A It includes a first optical fiber sensor 301 and a second optical fiber sensor 302 configured on the upper and lower sides of the first conveyor belt group 11 and the second conveyor belt group 12, and can be used with an optical fiber amplifier (not shown) to amplify the optical signal to facilitate the detection of the position of the material 70. The direction of the optical signal L can be from top to bottom (from the first optical fiber sensor 301 to the second optical fiber sensor 302), from bottom to top (from the second optical fiber sensor 302 to the first optical fiber sensor 301), or bidirectional. At the same time, in order to provide the first optical fiber sensor 301 and the second optical fiber sensor 302 for mounting on the upper and lower sides of the first conveyor belt group 11 and the second conveyor belt group 12, a tree branch-shaped bracket 50 is added for mounting the first optical fiber sensor 301 and the second optical fiber sensor 302. To illustrate its operation, let's take the optical signal L as an example, moving from bottom to top. The optical signal emitted by the second fiber optic sensor 302 is received by the first fiber optic sensor 301. When material 70 passes through and blocks the optical signal L, it can be determined that material 70 has passed this position. To allow the optical signal L to pass through, please refer to... Figure 2AThe first conveyor belt group 11 and the second conveyor belt group 12 each have three conveyor belts. These six conveyor belts have multiple gaps 112 and 122 spaced apart at positions corresponding to the placement of the first fiber optic sensor 301 and the second fiber optic sensor 302, as shown in the figure. Based on the positions of the first fiber optic sensor 301 and the second fiber optic sensor 302, each of the three conveyor belts in the first conveyor belt group 11 and the second conveyor belt group 12 has two gaps 112 and 122 respectively. Of course, the number and placement of gaps 112 and 122 can be adjusted according to requirements. Similarly, the first fiber optic sensor 301 and the second fiber optic sensor 302 can also be adjusted accordingly. For example, the first conveyor belt group 11 and the second conveyor belt group 12 can each have four conveyor belts, thus having three gaps 112 and 122 respectively. With the increase in the number of gaps and the corresponding fiber optic sensors, this dual-axis conveyor belt system can be more suitable for conveying various materials with different areas, as long as the material area can be sensed by fiber optic sensors placed in at least two gaps. In addition, each of the upper pressure rollers 20 is correspondingly positioned at the center of the conveyor belt of the first conveyor belt group 11 or the second conveyor belt group 12, so that the pressure applied to the conveyor belt can be uniform.

[0029] Please refer to the following section. Figure 2BWhen the blocking timing of the first fiber optic sensor 31' and the second fiber optic sensor 32' at corresponding vertical positions differs, it can be sensed and calculated by a central control unit (not shown in the figure). Specifically, the input terminal of the central control unit is connected to the first fiber optic sensor 31' and the second fiber optic sensor 32', and the output terminal of the central control unit is connected to the first controller 111 and the second controller 121 respectively. When the blocking timing of the first fiber optic sensor 31' and the second fiber optic sensor 32' differs, the central control unit can calculate the offset of the material 70 position based on the magnitude of the timing difference and the vertical projection area of ​​the material 70. At this time, the central control unit can output control signals to the first controller 111 and the second controller 121, such as pulse signals, control voltages, etc., and regulate the running speed of the first conveyor belt group 11 and the second conveyor belt group 12 through the first controller 111 and the second controller 121. As shown in the figure, when the material 70 passes through, it will first block the light signal of the first fiber optic sensor 31', and then block the second fiber optic sensor 32'. Sensor 32' can determine that the upper half of material 70 is shifted to the left (i.e., closer to the feed end 101). Therefore, the first controller 111 will increase the running speed of the first conveyor belt group 11, or the second controller 121 will decrease the running speed of the second conveyor belt group 12 (or both can be adjusted simultaneously) to create a speed difference between the first and second conveyor belt groups 11 and 12. The magnitude of this speed difference depends on the magnitude of the aforementioned shift. Since material 70 spans between the first and second conveyor belt groups 11 and 12, the shift angle of material 70 will be gradually compensated (see...). Figure 2C-2D ), until material 70 returns to the correct position (see Figure 2E ).

[0030] On the other hand, in addition to being a similar type of photoelectric sensor as described above, sensor 30 also includes... Figure 2B , 3B Alternatively, it could be an image sensor 303, such as a charge-coupled device (CCD) sensor, which directly visually judges the position of the material 70 to determine whether the material 70 has shifted and the direction and magnitude of the shift. Then, the first controller 111 and the second controller 121 adjust the speed difference between the first conveyor belt group 11 and the second conveyor belt group 12 to compensate for this shift. Of course, besides the two aforementioned types, the sensor 30 can also be any type of detector available. Furthermore, the sensor 30 can also be a combination of a contrast-type photoelectric sensor and a charge-coupled device (CCD) sensor.

[0031] Furthermore, regarding the compensation logic operations used by the first controller 111 and the second controller 121, this part can be achieved by existing technologies and is not a key feature of this utility model. Here, we will only give a few common examples to illustrate it, such as proportional control, geometric analysis, or PID control. Proportional control is the simplest control strategy, which adjusts and compensates by controlling the linear relationship between the output and the error. Geometric analysis is a technique that uses geometric methods to analyze the motion, shape, and position of an object. In the angle compensation of the conveyor belt system, geometric analysis is used to calculate the deflection angle of the object to calculate the corresponding compensation motion. Finally, PID control is a more complex and commonly used control strategy, which includes three parts: proportional control, integral control, and derivative control. It will not be described in detail here.

[0032] In summary, this utility model proposes a dual-axis conveyor belt system. It uses independently controllable dual-axis conveyor belts arranged in parallel and sensors to monitor the position of the material in real time. When the material is detected to be deviating, the speed difference between the two conveyor belts is generated by controlling their operation. This creates a friction difference between the two sides of the material straddling the two conveyor belts. In continuous operation, the material is continuously moved or rotated to the set position, thus compensating for and correcting the deviation during dynamic material transport. As a result, it can achieve continuous and high-speed transportation.

[0033] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model. The scope of protection of the present utility model is defined by the claims. Those skilled in the art can make various modifications or equivalent substitutions to the present utility model within its substance and scope of protection, and such modifications or equivalent substitutions should also be considered to fall within the scope of protection of the present utility model. Therefore, the scope of protection of the present utility model shall be determined by the scope defined in the claims.

Claims

1. A twin-shaft conveyor belt system for conveying a material, characterized in that, This dual-shaft conveyor belt system includes: Two conveyor belt sets are arranged side by side along a single horizontal plane in a conveying direction, and the two conveyor belt sets can be independently controlled at a running speed. The two conveyor belt sets jointly carry the material along the conveying direction, and the material is set across the two conveyor belt sets. Multiple upper pressing rollers are installed above the two conveyor belt groups to press the material straddling the two conveyor belt groups; and At least one sensor is used to detect the position of the material on the two conveyor belt sets; when the material is detected to be deviating, the running speed of the two conveyor belt sets is adjusted to create a speed difference between the two conveyor belt sets, thereby correcting the position of the material.

2. The twin-shaft conveyor belt system according to claim 1, characterized in that, Each of the two conveyor belt groups has multiple conveyor belts, which are spaced apart by multiple gaps.

3. The twin-shaft conveyor belt system according to claim 2, characterized in that, The multiple conveyor belts have the same width.

4. The twin-shaft conveyor belt system according to claim 2, characterized in that, The widths of the multiple conveyor belts are not the same.

5. The twin-shaft conveyor belt system according to claim 2, characterized in that, The sensor is positioned within these multiple gaps.

6. The twin-shaft conveyor belt system according to claim 1, characterized in that, The two conveyor belt sets have a feed end and a discharge end. The material is fed into the two conveyor belt sets through the feed end and discharged through the discharge end.

7. The twin-shaft conveyor belt system according to claim 6, characterized in that, The conveying direction of the two conveyor belt sets is from the feed end to the discharge end.

8. The twin-shaft conveyor belt system according to claim 1, characterized in that, This sensor is a contrast-type photoelectric sensor.

9. The twin-shaft conveyor belt system according to claim 8, characterized in that, This comparative photoelectric sensor is an optical fiber sensor.

10. The twin-shaft conveyor belt system according to claim 1, characterized in that, This sensor is an image sensor.

11. The twin-shaft conveyor belt system according to claim 6, characterized in that, The sensor is a charge-coupled device (CCD) sensor.

12. The twin-shaft conveyor belt system according to claim 1, characterized in that, It also includes a bracket for mounting the sensor.

Images