Glass detection equipment
By using a press wheel to contact the glass surface in the glass detection equipment to drive the encoder movement and set up two triggers and encoding components, the error problem caused by slippage in large-size glass detection is solved, and a high-precision detection effect is achieved.
Patent Information
- Application Number
- CN202422121309.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-30
- Publication Date
- 2025-07-29
- Estimated Expiration
- 2034-08-30
AI Technical Summary
In the prior art, when large-size glass is detected, the glass slips due to fluctuations in the speed of the conveying roller, resulting in large detection errors and it is difficult to accurately reflect the motion of the glass.
The pressure wheel directly contacts the glass surface to drive the encoder movement, and by setting two triggers and two encoding components, the controller switches the signal source to ensure that the camera takes pictures at the right time and avoids errors.
It improves the accuracy and comprehensiveness of glass detection, ensures that the camera can capture the full picture of the glass, especially the tail, and reduces detection errors.
Smart Images
Figure CN223166090U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of glass production, in particular to a glass detection device. Background Art
[0002] With the continuous improvement of living standards, people's demand for the size of glass is getting higher and higher, and large-size glass is becoming more and more common on the market. The dimensional accuracy of glass is an important indicator to measure the quality of glass products. Therefore, during the glass production process, it is necessary to detect the size of the glass and the structures on the glass. However, for large-size glass, due to its large surface width and heavy mass, it is difficult to detect.
[0003] In the past, glass was detected manually, which was labor-consuming and had low detection accuracy. With the development of technology, most of the existing technologies use an automated method for detection. Among them, the most common method is to detect based on the cooperation of an encoder and visual imaging. In this method, an encoder is installed on the conveying roller of the glass conveying table, and at the same time, a camera is installed above the glass conveying table. When the glass is conveyed by the conveying roller, the conveying roller drives the encoder to rotate at the same time. After the encoder count reaches a certain number, the control system controls the camera to take a picture. Finally, the pictures taken are integrated to obtain an image of the whole piece of glass, and then the control system integrates the graphics of the whole piece of glass and then conducts detection. The basis for realizing the above detection method is that the length of the glass photographed by the camera each time is positively correlated with the distance that the glass is conveyed during this time period, and the encoder count is used to make the camera take pictures at the appropriate moment.
[0004] However, the above method has the following problems: the rotation speed of the conveying roller is not constant and often fluctuates. When the speed of the conveying roller changes instantaneously, the speed of the glass with a large mass is not easy to change instantaneously. At this time, the glass slips relative to the conveying roller, and after the slip occurs, the encoder count will not accurately reflect the distance that the glass is conveyed, resulting in an offset of the actual position of the photo relative to the theoretical position; when the size of the glass is large, the above errors accumulate continuously during the photo-taking process, resulting in a large final detection error.
[0005] Therefore, it is necessary to make improvements to the problems existing in the prior art. Summary of the Utility Model
[0006] The purpose of the utility model is to provide a glass detection device, aiming to solve the problem of large detection error of large-size glass caused by the slip of the glass relative to the conveying roller in the prior art.
[0007] In order to achieve the above-mentioned purpose, the utility model provides a glass detection device, which includes a conveying device and a first trigger, a first encoding component, a camera, a second encoding component and a second trigger arranged in sequence along the conveying direction of the conveying device, the conveying device is used to convey the glass and make the glass pass through the triggering area of the first trigger, the contact area of the first encoding component, the shooting area of the camera, the contact area of the second encoding component and the triggering area of the second trigger in sequence; the first encoding component includes a first pressure wheel and a first encoder connected by a transmission, the first pressure wheel is used to contact the surface of the glass and is driven to rotate by the glass; the second encoding component includes a second pressure wheel and a second encoder connected by a transmission, the second pressure wheel is used to contact the surface of the glass and is driven to rotate by the glass, and the camera is located above the conveying device; it also includes a controller, and the first trigger, the first encoder, the camera, the second encoder and the second trigger are respectively connected to the controller for communication.
[0008] Furthermore, the first encoding component and the second encoding component are both arranged above the conveying device and are configured to be height-adjustable.
[0009] Furthermore, a first crossbeam is erected above the conveying device, the first crossbeam is provided with a first mounting seat, the first mounting seat is vertically slidably connected to a first slide, the first pressure wheel and the first encoder are both installed on the first slide, and a first cylinder is connected between the first slide and the first mounting seat.
[0010] Furthermore, the first pressure wheel is transmission-connected to the first encoder by means of a first synchronous belt, and the material of the first pressure wheel is rubber.
[0011] Furthermore, a second crossbeam is erected above the conveying device, the second crossbeam is provided with a second mounting seat, the second mounting seat is vertically slidably connected to a second slide, the second pressure wheel and the second encoder are both installed on the second slide, and a second cylinder is connected between the second slide and the second mounting seat.
[0012] Furthermore, the second pressure wheel is transmission-connected to the second encoder by means of a second synchronous belt, and the material of the second pressure wheel is rubber.
[0013] Furthermore, the conveying device is a conveying roller, and there is a gap between the rollers of the conveying roller. The first trigger and the second trigger are arranged below the gap, and the first trigger and the second trigger are both photoelectric sensors.
[0014] Furthermore, a fill light is provided below the gap, and the fill light is located below the camera.
[0015] Further, the controller is configured to be able to receive the counting signals sent by the first encoder and the second encoder and control the camera to take pictures according to the counting signals. When the front edge of the glass is located between the triggering areas of the first trigger and the second trigger, the counting signal of the controller is collected from the first encoder. After the front edge of the glass passes through the triggering area of the second trigger, the counting signal of the controller is collected from the second encoder.
[0016] A glass detection device provided by the present utility model, compared with the prior art, drives the encoder to move by directly contacting the surface of the glass with a pressing wheel, so that the movement of the glass can be more accurately reflected, and the error caused by the glass slipping relative to the roller shaft can be avoided; in addition, by setting two triggers and two coding components, it can provide signals for the controller to start the camera and enter the standby state at the appropriate time, and switch the signal source of counting by the controller during the process of the glass moving forward, so as to ensure that the camera can take a complete and accurate picture of the glass, especially the tail of the glass can be taken completely, so as to improve the accuracy and comprehensiveness of detection. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 is a three-dimensional structure diagram of the glass detection device of the present utility model;
[0018] Figure 2 is a partial top view of the glass detection device of the present utility model;
[0019] Figure 3 is a partial front view of the glass detection device of the present utility model;
[0020] Figure 4 is a three-dimensional structure diagram of the first coding component;
[0021] Figure 5 is a schematic diagram of the working principle of the glass detection device of the present utility model.
[0022] DESCRIPTION OF REFERENCE NUMERALS:
[0023] 1. Glass;
[0024] 2. Conveying device; 21. Roller shaft;
[0025] 3. First trigger;
[0026] 4. First coding component; 41. First pressing wheel; 42. First encoder; 43. First cross beam; 44. First mounting seat; 45. First sliding plate; 46. First cylinder; 47. First synchronous belt;
[0027] 5. Camera;
[0028] 6. Second coding component; 61. Second pressing wheel; 62. Second encoder;
[0029] 7. Second trigger
[0030] 8. Controller Detailed implementation manner
[0031] The following is a detailed description of the embodiments of the present utility model.
[0032] In this embodiment, unless otherwise clearly specified and limited, when terms such as "arranged on", "connected", and "coupled" appear, these terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or connected through one or more intermediate media. For those skilled in the art, the specific meanings of the above terms in this embodiment can be understood according to specific circumstances. For the direction words in this embodiment, they are used to better illustrate the characteristics of the features and the relationships between the features. It should be understood that when the placement direction of this embodiment changes, the direction of the characteristics of the features and the relationships between the features also changes accordingly. Therefore, the direction words do not constitute an absolute limiting effect on the characteristics of the features and the relationships between the features in space, but only play a relative limiting role.
[0033] The present utility model also provides a glass detection device, as Figures 1 to 4 shown, which includes a conveying device 2 and a first trigger 3, a first coding component 4, a camera 5, a second coding component 6, and a second trigger 7 arranged in sequence along the conveying direction of the conveying device 2. The conveying device 2 is used to convey the glass 1 and make the glass 1 pass through the triggering area of the first trigger 3, the contact area of the first coding component 4, the shooting area of the camera 5, the contact area of the second coding component 6, and the triggering area of the second trigger 7 in sequence; the first coding component 4 includes a first pressing wheel 41 and a first encoder 42 that are drivingly connected. The first pressing wheel 41 is used to contact the surface of the glass 1 and is driven to rotate by the glass 1; the second coding component 6 includes a second pressing wheel 61 and a second encoder 62 that are drivingly connected. The second pressing wheel 61 is used to contact the surface of the glass 1 and is driven to rotate by the glass 1. The camera 5 is located above the conveying device 2; it also includes a controller 8. The first trigger 3, the first encoder 42, the camera 5, the second encoder 62, and the second trigger 7 are all communicatively connected to the controller 8 respectively.
[0034] Based on the above structural arrangement, the working mode of the glass detection device of the present utility model is as follows:
[0035] Make the glass 1 pass through the triggering position of the first trigger 3, the contact position of the first coding component 4, the photographing position of the camera 5, the contact position of the second coding component 6, and the triggering position of the second trigger 7 in sequence in the advancing direction as Figure 5 shown.
[0036] When the front edge of the glass 1 passes the first trigger 3, the camera 5 enters the photographing state, and the controller 8 controls the camera 5 to take a photo every time a specific number of counts are accumulated. During operation, when the front edge of the glass 1 has not reached the first trigger 3, the camera 5 is in the standby state to save energy consumption; after the front edge passes the first trigger 3 to make the camera 5 enter the photographing state, the controller 8 controls the timing of the camera 5 to take a photo according to the encoded counts (number of pulses) it has accumulated. How to control the camera 5 to take a photo based on the encoded counts is prior art, so it will not be elaborated in this embodiment.
[0037] When the front edge of the glass 1 is between the first trigger 3 and the second trigger 7, the counting signal of the controller 8 is collected from the first encoder 42. After the front edge of the glass 1 passes the second trigger 7, the counting signal of the controller 8 is collected from the second encoder 62. Such a setting is to ensure that the trailing edge of the glass 1 can be captured by the camera 5. Because there is a certain distance between the first encoding component 4 and the camera 5, if only the first encoding component 4 is set, when the trailing edge of the glass 1 leaves the first encoding component 4, the glass 1 will no longer drive the encoder of the first encoding component 4 to rotate. At this time, the controller 8 loses the encoded control counting signal, and the controller 8 cannot know the traveling situation of the glass 1. For this reason, the second encoding component 6 is set in this embodiment. When the glass 1 travels to the second encoding component 6, the pressure wheel of the second encoding component 6 contacts the surface of the glass 1 and is driven to rotate by the glass 1. At this time, the encoder of the second encoding component 6 can also reflect the traveling situation of the glass 1 in real time. Switching to using the encoder of the second encoding component 6 as the counting signal source can continue to control the camera 5 to take a photo, and the trailing edge of the glass 1 can also be captured. To clarify when to perform the above switching, the second trigger 7 is set in this embodiment. After the front edge of the glass 1 reaches the second trigger 7, the controller 8 starts to count using the encoder of the second encoding component 6.
[0038] When the trailing edge of the glass 1 passes the second trigger 7, the camera 5 enters the standby state to save energy consumption.
[0039] The controller 8 integrates the complete photo of the glass 1 from the photos taken by the camera 5 and detects the glass 1. How to integrate the complete photo of the glass 1 and how to detect the glass 1 after obtaining the complete photo are prior art, so they will not be elaborated in this embodiment.
[0040] Based on the above structure and working method, this glass detection equipment uses a pressure wheel to directly contact the surface of the glass 1 to drive the encoder to move, which can more accurately reflect the movement of the glass 1 and avoid errors caused by the glass 1 slipping relative to the roller 21; in addition, it is equipped with two triggers and two encoding components to provide a signal to the controller 8 so that the camera 5 can start the camera 5 and enter the standby state at the appropriate time, and let the controller 8 switch the counting signal source during the movement of the glass 1 to ensure that the camera 5 can capture the entire picture of the glass 1 accurately, especially the tail of the glass 1.
[0041] In this embodiment, the first encoding component 4 and the second encoding component 6 are both arranged above the conveyor 2 and configured to be height-adjustable. The first encoding component 4 and the second encoding component 6 are both arranged to be height-adjustable in order to adapt to glass 1 of different thicknesses. At the same time, by adjusting the height, it is possible to ensure that the pressure wheel is pressed on the surface of the glass 1 with appropriate force and the pressure wheel does not slip relative to the glass 1. Preferably, a first crossbeam 43 is set above the conveyor 2, the first crossbeam 43 is provided with a first mounting seat 44, the first mounting seat 44 is vertically slidably connected to a first slide 45, the first pressure wheel 41 and the first encoder 42 are both mounted on the first slide 45, and a first cylinder 46 is connected between the first slide 45 and the first mounting seat 44; a second crossbeam is set above the conveyor 2, the second crossbeam is provided with a second mounting seat, the second mounting seat is vertically slidably connected to a second slide, the second pressure wheel 61 and the second encoder 62 are both mounted on the second slide, and a second cylinder is connected between the second slide and the second mounting seat. The structures of the first encoding component 4 and the second encoding component 6 are basically the same.
[0042] In this embodiment, the first pressure wheel 41 is connected to the first encoder 42 by means of a first synchronous belt 47, and the material of the first pressure wheel 41 is rubber; the second pressure wheel 61 is connected to the second encoder 62 by means of a second synchronous belt, and the material of the second pressure wheel 61 is rubber.
[0043] In this embodiment, the conveyor device 2 comprises conveyor rollers, each of which has a gap between its rollers 21. A first trigger 3 and a second trigger 7 are disposed below the gap. Both the first trigger 3 and the second trigger 7 are photoelectric sensors, which are sensitive and inexpensive. A fill light is also disposed below the gap. The fill light is located below the camera 5 and provides supplemental illumination for the camera 5, improving image clarity.
[0044] In summary, this type of glass detection equipment has high accuracy.
[0045] In the absence of conflict, the above embodiments and features therein may be combined with each other.
[0046] Finally, it should be noted that the above embodiments are only used to illustrate the preferred technical solutions of the present utility model, rather than limiting the protection scope of the present utility model. Although the present utility model has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present utility model can be modified or equivalently replaced without departing from the essence and scope of the present utility model.
Claims
1. A glass detection device, characterized in that: It includes a conveying device (2), a first trigger (3), a first encoding component (4), a camera (5), a second encoding component (6) and a second trigger (7) arranged in sequence along the conveying direction of the conveying device (2). The conveying device (2) is used to convey the glass (1) and make the glass (1) pass through the triggering area of the first trigger (3), the contact area of the first encoding component (4), the shooting area of the camera (5), the contact area of the second encoding component (6) and the triggering area of the second trigger (7) in sequence; The first encoding component (4) includes a first pressing wheel (41) and a first encoder (42) connected in transmission. The first pressing wheel (41) is used to contact the surface of the glass (1) and is driven to rotate by the glass (1); The second encoding component (6) includes a second pressing wheel (61) and a second encoder (62) connected in transmission. The second pressing wheel (61) is used to contact the surface of the glass (1) and is driven to rotate by the glass (1). The camera (5) is located above the conveying device (2); It further includes a controller (8). The first trigger (3), the first encoder (42), the camera (5), the second encoder (62) and the second trigger (7) are all communicatively connected to the controller (8) respectively.
2. The glass detection device according to claim 1, characterized in that: Both the first encoding component (4) and the second encoding component (6) are arranged above the conveying device (2) and are configured to be height-adjustable.
3. The glass detection device according to claim 2, characterized in that: A first cross beam (43) is erected above the conveying device (2). The first cross beam (43) is provided with a first mounting seat (44). The first mounting seat (44) is slidably connected with a first sliding plate (45) in the vertical direction. The first pressing wheel (41) and the first encoder (42) are both installed on the first sliding plate (45). A first air cylinder (46) is connected between the first sliding plate (45) and the first mounting seat (44).
4. The glass detection device according to claim 3, wherein: The first pressing wheel (41) is in transmission connection with the first encoder (42) by means of a first synchronous belt (47). The material of the first pressing wheel (41) is rubber.
5. The glass detection device according to claim 2, wherein: A second cross beam is erected above the conveying device (2). The second cross beam is provided with a second mounting seat. The second mounting seat is slidably connected with a second sliding plate in the vertical direction. The second pressing wheel (61) and the second encoder (62) are both installed on the second sliding plate. A second air cylinder is connected between the second sliding plate and the second mounting seat.
6. The glass detection device according to claim 5, wherein: The second pressing wheel (61) is in transmission connection with the second encoder (62) by means of a second synchronous belt. The material of the second pressing wheel (61) is rubber.
7. The glass detection device according to claim 1, wherein: The conveying device (2) is a conveying roller shaft. There is a gap between the roller shafts (21) of the conveying roller shaft. The first trigger (3) and the second trigger (7) are arranged below the gap. Both the first trigger (3) and the second trigger (7) are photoelectric induction sensors.
8. The glass detection device according to claim 5, characterized in that: A supplementary light is also arranged below the gap. The supplementary light is located below the camera (5).
9. The glass detection device according to any one of claims 1 to 8, characterized in that: The controller (8) is configured to be able to receive the count signals sent by the first encoder (42) and the second encoder (62) and control the camera (5) to take pictures according to the count signals. When the front edge of the glass is located between the triggering areas of the first trigger (3) and the second trigger (7), the count signal of the controller (8) is collected from the first encoder (42). After the front edge of the glass passes through the triggering area of the second trigger (7), the count signal of the controller (8) is collected from the second encoder (62).