CN117283634A - Detection control system for cutting position of large cut product - Google Patents

Abstract

The application provides a detection control system of big article cutting position that cuts, the detection control system of big article cutting position that cuts includes: a horizontal pan/tilt; the image acquisition module comprises an industrial camera, a light source and a bracket, wherein the bracket is arranged on the horizontal cradle head, the industrial camera and the light source are both movably connected with the bracket, and the bracket comprises an arc-shaped bracket; the side gauge driving module comprises a side gauge, a stepping motor and a position sensor, wherein the stepping motor is used for adjusting the side gauge, and the position sensor is used for feeding back the stepping motor to adjust the size of the side gauge; the information processing module is used for acquiring the image acquired by the image acquisition module, obtaining the deviation value of the cutting line of the image and the template according to the image, and controlling the stepping motor to adjust the side gauge according to the deviation value. The deviation size of the side gauge can be measured more accurately and directly, the cutting quality of products is improved, and manual participation is reduced.

Description

Detection and control system for cutting position of large cut products

Technical field

The present application relates to the technical field of cutting position detection of cut products, specifically, to a detection and control system for the cutting position of large cut products.

Background technique

During the automatic cutting process of large securities sheets, it is necessary to ensure that the product posture is absolutely accurate to ensure the appearance and size of the cut product. There is no detection mechanism in the initial cutting process. When the product reaches the cutting position, the side gauge is slapped and sorted to position the product. After the positioning is completed, the cutting knife starts to cut the product. This method has great hidden dangers. When the posture of the product deviates greatly, the side gauge slap cannot play an effective correction role, resulting in product cutting waste.

With the upgrade of detection technology, after the side slapping is completed, the four cameras installed directly above the product will check the posture of the product. After the verification is completed and within the error range, the cutting action can be started. However, This detection method has flaws. When the product surface is misaligned with the product below, the quality of the product below cannot be effectively guaranteed after cutting.

During the large sheet cutting process, since the printed matter is not printed by the same printing machine, the positioning reference of each stack of products is different. Therefore, when cutting, each stack needs to check whether its cutting line coincides with the actual cutting position. When the deviation is too large, At this time, two people need to stop the machine and cooperate to complete the adjustment of the side gauge. Since the regular side is on the non-operation side, the cutting positions on both sides need to be considered, so two people need to work together. During the side gauge adjustment process, both operators are required to communicate and adjust the side gauge size. However, each person has a different understanding of the side gauge size, so there may be information gaps during the communication process, resulting in errors in the adjustment size.

Contents of the invention

The present application aims to solve at least one of the above technical problems.

For this reason, the first purpose of this application is to provide a detection and control system for the cutting position of large-sheet cut products.

In order to achieve the first object of the present application, the technical solution of the first aspect of the present invention provides a detection and control system for the cutting position of large-sheet cutting products, including: a horizontal pan/tilt; an image acquisition module, including an industrial camera, a light source and a The bracket is set on a horizontal pan-tilt. Industrial cameras and light sources are movably connected to the bracket. The bracket includes an arc-shaped bracket; a side gauge drive module is located on one side of the horizontal pan-tilt. The side gauge drive module includes a side gauge, A stepper motor and a position sensor. The stepper motor is connected to the side gauge and is used to adjust the side gauge. The position sensor is connected to the stepper motor and is used to feed back the stepper motor to adjust the size of the side gauge; the information processing module is connected to the image acquisition module respectively. , is connected to the side gauge drive module. The information processing module is used to obtain the image collected by the image acquisition module, and obtain the deviation value between the cutting line of the image and the template based on the image, and control the stepper motor to adjust the side gauge based on the deviation value.

In this technical solution, the detection and control system for the cutting position of large-sheet cutting products includes a horizontal pan/tilt, image acquisition module, side gauge drive module and information processing module. Among them, the image acquisition module includes industrial cameras, light sources and brackets. The camera bracket is installed on a horizontal platform, which can expand the shooting range, take into account all varieties of products that need to be collected in large format, and ensure the best shooting position. The industrial camera and light source are movably connected to the arc-shaped bracket to adjust the camera's shooting angle. When adjusting the position of the industrial camera, there is no need to adjust the focal length of the industrial camera, saving adjustment time. The side gauge drive module includes a side gauge, a stepper motor and a position sensor. The stepper motor is used to adjust the side gauge. After the stepper motor is adjusted, the high-precision position sensor installed on one side feeds back the stepper motor to adjust the size of the side gauge. Program achieve closed-loop control. Using a stepper motor to drive the side gauge size can realize real-time automatic adjustment of the side gauge size. After the image acquisition module completes the image acquisition task, the information processing module obtains the image collected by the image acquisition module and compares the cutting line on the image with the template. , obtain the deviation value between the cutting line of the image and the template, and control the stepper motor to adjust the corresponding parameters of the side gauge according to the deviation value. After completing the adjustment, compare it with the change value of the position sensor to ensure the accuracy of the motor adjustment parameters. The stepper motor adjustment accuracy can reach 0.02mm, which greatly improves the side gauge adjustment accuracy. The technical solution of this application can more accurately and directly measure the deviation size of the side gauge and improve the cutting quality of the product. By using an arc-shaped camera bracket, there is no need to adjust the focus when adjusting the position of the industrial camera, and it meets the data usage requirements. A stepper motor is used to drive the side gauge parameter adjustment. When adjusting the side gauge size, manual intervention can be used, or a fully automatic method can be used. It is simple and fast, can reduce manual use, greatly improve work efficiency, and reduce side gauge adjustment shutdowns. time.

In addition, the technical solution provided by this application may also have the following additional technical features:

In the above technical solution, optionally, the arc-shaped bracket is a 45° arc-shaped bracket with the lower blade of the cutting knife as the center of the circle and the distance from the cutting knife to the center line of the horizontal platform as the radius.

In this technical solution, the arc-shaped bracket is a 45° arc-shaped bracket with the lower blade of the cutting knife as the center of the circle and the distance from the cutting knife to the center line of the horizontal pan/tilt as the radius. When adjusting the position of the industrial camera, there is no need to adjust it. Industrial camera focal length saves adjustment time.

In the above technical solution, optionally, the horizontal cloud platform includes a first horizontal cloud platform and a second horizontal cloud platform, and the first horizontal cloud platform and the second horizontal cloud platform are arranged at intervals.

In this technical solution, the horizontal cloud platform includes a first horizontal cloud platform and a second horizontal cloud platform, and the first horizontal cloud platform and the second horizontal cloud platform are arranged at intervals.

In the above technical solution, optionally, the arc-shaped bracket includes a first arc-shaped bracket and a second arc-shaped bracket. The first arc-shaped bracket is connected to the first horizontal platform, and the second arc-shaped bracket is connected to the second horizontal platform. connected.

In this technical solution, the arc-shaped bracket includes a first arc-shaped bracket and a second arc-shaped bracket. The first arc-shaped bracket is connected to the first horizontal platform, and the second arc-shaped bracket is connected to the second horizontal platform.

In the above technical solution, optionally, the industrial camera includes a front-end cutting line camera and a rear-end cutting line camera. The front-end cutting line camera is movably connected to the first arc-shaped bracket, and the rear-end cutting line camera is movably connected to the second arc-shaped bracket. Movably connected.

In this technical solution, the industrial camera includes a front-end cutting line camera and a rear-end cutting line camera. The front-end cutting line camera is movably connected to the first arc-shaped bracket, and the rear-end cutting line camera is movably connected to the second arc-shaped bracket. .

In the above technical solution, optionally, the light source includes a first light source and a second light source, the first light source is connected to the front-end cutting line camera, and the second light source is connected to the rear-end cutting line camera.

In this technical solution, the light source includes a first light source and a second light source. The first light source is connected to the front-end cutting line camera, and the second light source is connected to the rear-end cutting line camera.

In the above technical solution, optionally, the information processing module includes a computer. The computer is connected to the industrial camera and is used to obtain the image collected by the industrial camera and calculate the deviation value between the cutting line of the image and the template based on the image.

In this technical solution, the information processing module includes a computer. The computer is connected to the industrial camera and is used to obtain images collected by the industrial camera and calculate the deviation value between the cutting line of the image and the template based on the image.

In the above technical solution, optionally, the information processing module also includes a PLC. The PLC is connected to the computer and the stepper motor respectively, and is used to control the stepper motor to adjust the corresponding parameters of the side gauge according to the deviation value.

In this technical solution, the information processing module also includes a PLC, which is connected to the computer and the stepper motor respectively, and is used to control the stepper motor to adjust the corresponding parameters of the side gauge according to the deviation value.

In the above technical solution, optionally, the detection and control system for the cutting position of large-sheet cutting products also includes: an alarm device, connected to the information processing module, for issuing an alarm when the deviation value is greater than a preset value.

In this technical solution, the detection and control system for the cutting position of large-sheet cutting products also includes an alarm device. The alarm device is connected to the information processing module and is used to alarm when the deviation value is greater than the preset value. The alarm device is used to alarm when the deviation value is greater than the preset value, which prevents the previous situation of scrapping the knife and ensures the cutting quality of the product.

In the above technical solution, optionally, the PLC is also connected to an alarm device for controlling the alarm device to issue an alarm when the deviation value is greater than a preset value.

In this technical solution, the PLC is also connected to the alarm device to control the alarm device to issue an alarm when the deviation value is greater than the preset value.

In the above technical solution, optionally, the alarm device includes an alarm light.

In this technical solution, the alarm device may be an alarm light.

Additional aspects and advantages of the invention will be apparent from the description which follows, or may be learned by practice of the invention.

Description of drawings

The above and/or additional aspects and advantages of the present application will become apparent and readily understood from the description of the embodiments in conjunction with the following drawings, in which:

Figure 1 is a schematic three-dimensional structural diagram of a detection and control system for the cutting position of large cut products according to one embodiment of the present application;

Figure 2 is an electrical control schematic diagram of a detection and control system for the cutting position of large cut products according to one embodiment of the present application;

Figure 3 is a side gauge adjustment workflow diagram of the detection and control system for the cutting position of large-sheet cutting products according to one embodiment of the present application;

Figure 4 is a schematic diagram of the AB knife light edge station crown and image acquisition camera of the detection and control system for the cutting position of large-sheet cutting products according to one embodiment of the present application.

Among them, the corresponding relationship between the reference signs and component names in Figure 1 is:

10: Detection and control system for the cutting position of large cut products; 110: Horizontal pan/tilt; 120: Industrial camera; 130: Arc bracket; 140: Stepper motor.

Detailed ways

In order to understand the above-mentioned objects, features and advantages of the present application more clearly, the present application will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that, as long as there is no conflict, the embodiments of the present application and the features in the embodiments can be combined with each other.

Many specific details are set forth in the following description to fully understand the present application. However, the present application can also be implemented in other ways different from those described here. Therefore, the protection scope of the present application is not limited by the specific disclosures below. Limitations of Examples.

The following describes a detection and control system for the cutting position of a large cut product according to some embodiments of the present application with reference to FIGS. 1 to 4 .

As shown in Figures 1 and 2, the first embodiment of the present invention provides a detection and control system 10 for the cutting position of large cut products, including: a horizontal pan/tilt 110; an image acquisition module, including an industrial camera 120 , light source and bracket, the bracket is set on the horizontal platform 110, the industrial camera 120 and the light source are movably connected to the bracket, the bracket includes an arc bracket 130; a side gauge drive module is located on one side of the horizontal platform 110, The gauge drive module includes a side gauge, a stepper motor 140 and a position sensor. The stepper motor 140 is connected to the side gauge and is used to adjust the side gauge. The position sensor is connected to the stepper motor 140 and is used to feed back the stepper motor 140 to adjust the side gauge. size; the information processing module is connected to the image acquisition module and the side gauge drive module respectively. The information processing module is used to obtain the image collected by the image acquisition module, and obtain the deviation value between the cutting line of the image and the template based on the image, and control the step according to the deviation value. The inlet motor 140 adjusts the side gauge; the alarm device is connected to the information processing module and is used to alarm when the deviation value is greater than the preset value.

In this embodiment, the detection and control system 10 for the cutting position of a large cut product includes a horizontal pan/tilt 110, an image acquisition module, a side gauge drive module and an information processing module. Among them, the image acquisition module includes an industrial camera 120, a light source and a bracket. The camera bracket is installed on the horizontal pan/tilt 110, which can expand the shooting range, take into account all varieties of products that need to be collected in large format, and ensure the best shooting position. The industrial camera 120 and the light source are movably connected to the arc bracket 130 to adjust the camera's shooting angle. When adjusting the position of the industrial camera 120, it is not necessary to adjust the focal length of the industrial camera 120, thus saving adjustment time. The side gauge drive module includes a side gauge, a stepper motor 140 and a position sensor. The stepper motor 140 is used to adjust the side gauge. After the stepper motor 140 is adjusted, the high-precision position sensor installed on one side feeds back the stepper motor 140 to adjust the side gauge. The size is programmed to achieve closed-loop control. Using the stepper motor 140 to drive the side gauge size can realize real-time automatic adjustment of the side gauge size. After the image acquisition module completes the image acquisition task, the information processing module obtains the image collected by the image acquisition module and compares the cutting line on the image with the template. Yes, the deviation value between the cutting line of the image and the template is obtained, and the stepper motor 140 is controlled according to the deviation value to adjust the corresponding parameters of the side gauge. After completing the adjustment, compare it with the change value of the position sensor to ensure the accuracy of the motor adjustment parameters. The adjustment accuracy of the stepper motor 140 can reach 0.02mm, which greatly improves the side gauge adjustment accuracy. The alarm device is used to alarm when the deviation value is greater than the preset value, which prevents the previous situation of scrapping the knife and ensures the cutting quality of the product. This embodiment can more accurately and directly measure the deviation size of the side gauge, thereby improving the cutting quality of the product. By using an arc-shaped camera bracket, there is no need to adjust the focal length when adjusting the position of the industrial camera 120, and the data usage requirements are met. A stepper motor 140 is used to drive the side gauge parameter adjustment. When adjusting the side gauge size, manual intervention can be used, or a fully automatic method can be used. It is simple and fast, can reduce manual use, greatly improve work efficiency, and reduce side gauge adjustment. Downtime.

In the above embodiment, optionally, the arc-shaped bracket 130 is a 45° arc-shaped bracket with the lower blade of the cutting knife as the center of the circle and the distance from the cutting knife to the center line of the horizontal platform 110 as the radius. When the camera is in the 120 position, there is no need to adjust the focal length of the industrial camera 120, saving adjustment time.

In the above embodiment, optionally, the horizontal cloud platform 110 includes a first horizontal cloud platform 110 and a second horizontal cloud platform 110 , and the first horizontal cloud platform 110 and the second horizontal cloud platform 110 are arranged at intervals.

In the above embodiment, optionally, the arc-shaped bracket 130 includes a first arc-shaped bracket 130 and a second arc-shaped bracket 130. The first arc-shaped bracket 130 is connected to the first horizontal platform 110, and the second arc-shaped bracket 130 Connected to the second horizontal pan/tilt 110.

In the above embodiment, optionally, the industrial camera 120 includes a front-end cutting line camera and a rear-end cutting line camera. The front-end cutting line camera is movably connected to the first arc-shaped bracket 130 , and the rear-end cutting line camera is connected to the second arc-shaped bracket 130 . The shaped bracket 130 is movably connected.

In the above embodiment, optionally, the light source includes a first light source and a second light source. The first light source is connected to the front-end cutting line camera, and the second light source is connected to the rear-end cutting line camera.

In the above embodiment, optionally, the information processing module includes a computer. The computer is connected to the industrial camera 120 and is used to obtain the image collected by the industrial camera 120 and calculate the deviation value between the cutting line of the image and the template based on the image. The information processing module also includes a PLC, which is connected to the computer and the stepper motor 140 respectively, and is used to control the stepper motor 140 to adjust the corresponding parameters of the side gauge according to the deviation value. The PLC is also connected to the alarm device, which is used to control the alarm device to alarm when the deviation value is greater than the preset value.

In the above embodiment, optionally, the alarm device may be an alarm light.

As shown in Figures 1, 2, 3 and 4, according to a specific embodiment of the detection and control system 10 for the cutting position of large-sheet cutting products proposed by the present application, it solves the problem of the large-sheet cutting process of valuable securities. Measure the product's position, paper collection and skew size, collect number information, and provide alarms and deviation values when abnormal. The system is composed of advanced technologies such as industrial camera 120, PLC control technology, and stepper motor 140 drive technology.

The existing large-sheet cutting process early warning system installs two cameras between a set of knife boxes at the light edge station to collect two landmark points in the center of the product to determine the position deviation of the product. During the printing process, the difference in pressure of the printing press causes the product to separate. When the pressure of the printing press is too high, the product will be compressed and deformed, causing the product format to expand. At this time, the four detection points near the middle are checked. The deviation is within the deviation range, but the cutting accuracy requirements near the cutting line near the edge of the product cannot be guaranteed. Therefore, our technology has two industrial cameras 120 to collect the position of the edge cutting line of the large product and determine whether the first product is misaligned. There are only two cameras left in the middle of the product, one camera collects the serial number of the product, and the other camera collects Deviation of the marker. At this time, several cameras align a cutting plane to prevent the product from being skewed.

The image acquisition module is an industrial camera 120, a light source and a bracket. In terms of structure, this image acquisition module needs to capture two cutting lines at the front and rear of a large product. However, considering all varieties, the position of the cutting lines is different. In order to ensure the best shooting position, the camera bracket is installed on the horizontal pan/tilt 110 to expand the Shooting range. In order to be able to adjust the shooting angle of the camera, make a 45° arc camera bracket with the bottom of the cutting knife as the center of the circle and the distance from the cutting knife to the center line of the pan/tilt as the radius. When adjusting the camera position, there is no need to adjust the camera focus. Save adjustment time.

When adjusting the size of the side gauge, the original adjustment method is for the operator to rotate the adjustment handle on the operating side, and fix a dial indicator above the rotating handle to monitor the adjustment value of the side gauge in real time. We have improved the side gauge adjustment method and upgraded the side gauge adjustment rotating handle to be driven by a stepper motor. After the stepper motor 140 is adjusted, the high-precision position sensor installed on one side feeds back the stepper motor 140 to adjust the size of the side gauge. The program achieves closed-loop control.

Using a stepper motor to drive the size of the side gauge can realize real-time automatic adjustment of the size of the side gauge. After the image acquisition module completes the image acquisition task, it compares the cutting line on the image with the template, and transmits the deviation value to the computer, which then The numerical value is transmitted to the PLC to control the stepper motor 140 to adjust the corresponding parameters of the side gauge. After completing the adjustment, compare it with the change value of the position sensor to ensure the accuracy of the motor adjustment parameters. The adjustment accuracy of the stepper motor 140 can reach 0.02mm, which greatly improves the side gauge adjustment accuracy.

At the same time, the system can realize manual intervention to adjust the size of the side gauge. After the collected data is transmitted to the computer, the computer presents the deviation parameters to the operator in the form of recommended values. The operator completes the adjustment of the side gauge size by adding subjective manual judgment by collecting images and the actual position of the product on the operating side.

Compared with the previous operation methods, automatic adjustment of side gauge size and manual intervention adjustment can reduce the use of manual labor, greatly improve work efficiency, and reduce side gauge adjustment downtime.

This embodiment can more accurately and directly measure the deviation size of the side gauge, thereby improving the cutting quality of the product. To collect the edge of a large product, due to the position, the camera cannot collect the cutting line vertically. An arc-shaped camera bracket is innovatively used. There is no need to adjust the focus when adjusting the camera position, and it meets the data usage requirements. In the side gauge adjustment process, a stepper motor is innovatively used to drive the side gauge parameter adjustment. When adjusting the side gauge size, manual intervention can be used, or a fully automatic method can be used, which is simple and fast. The application of this process control early warning system has eliminated the occurrence of one-shot waste, ensured the cutting quality of the product, and at the same time reduced manual participation and reduced employee labor intensity.

In this application, the terms "first", "second" and "third" are used for descriptive purposes only and shall not be understood as indicating or implying relative importance; the term "plurality" refers to two or two Above, unless otherwise expressly limited. The terms "installation", "connection", "connection" and "fixing" should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; "connection" can be Either directly or indirectly through an intermediary. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "rear", etc. are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and The simplified description does not indicate or imply that the device or unit referred to must have a specific direction, be constructed and operate in a specific orientation, and therefore cannot be construed as a limitation on the present application.

In the description of this specification, the terms "one embodiment," "some embodiments," "specific embodiments," etc., mean that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in the present application. in at least one embodiment or example. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The above are only preferred embodiments of the present application and are not intended to limit the present application. For those skilled in the art, the present application may have various modifications and changes. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of this application shall be included in the protection scope of this application.

Claims (11)

1. A detection and control system for the cutting position of large-sheet cut products, which is characterized by including: horizontal pan/tilt; The image acquisition module includes an industrial camera, a light source and a bracket. The bracket is arranged on the horizontal platform. The industrial camera and the light source are movably connected to the bracket. The bracket includes an arc-shaped bracket; A side gauge drive module is located on one side of the horizontal pan/tilt. The side gauge drive module includes a side gauge, a stepper motor and a position sensor. The stepper motor is connected to the side gauge for adjusting the side gauge. Side gauge, the position sensor is connected to the stepper motor and is used to feed back the stepper motor to adjust the size of the side gauge; The information processing module is connected to the image acquisition module and the side gauge driving module respectively. The information processing module is used to obtain the image collected by the image acquisition module, and obtain the cutting line and the cutting line of the image according to the image. The deviation value of the template is used to control the stepper motor to adjust the side gauge according to the deviation value. 2. The detection and control system for the cutting position of large cut products according to claim 1, characterized in that, The arc-shaped bracket is a 45° arc-shaped bracket with the lower blade of the cutting knife as the center of the circle and the distance from the cutting knife to the center line of the horizontal platform as the radius. 3. The detection and control system for the cutting position of large cut products according to claim 1, characterized in that, The horizontal cloud platform includes a first horizontal cloud platform and a second horizontal cloud platform, and the first horizontal cloud platform and the second horizontal cloud platform are arranged at intervals. 4. The detection and control system for the cutting position of large cut products according to claim 3, characterized in that, The arc-shaped bracket includes a first arc-shaped bracket and a second arc-shaped bracket. The first arc-shaped bracket is connected to the first horizontal platform, and the second arc-shaped bracket is connected to the second horizontal platform. connected. 5. The detection and control system for the cutting position of large-sheet cut products according to claim 4, characterized in that: The industrial camera includes a front-end cutting line camera and a rear-end cutting line camera. The front-end cutting line camera is movably connected to the first arc-shaped bracket, and the rear-end cutting line camera is connected to the second arc-shaped bracket. Movably connected. 6. The detection and control system for the cutting position of large cut products according to claim 5, characterized in that: The light source includes a first light source and a second light source. The first light source is connected to the front-end cutting line camera, and the second light source is connected to the rear-end cutting line camera. 7. The detection and control system for the cutting position of large cut products according to any one of claims 1 to 6, characterized in that: The information processing module includes a computer, which is connected to the industrial camera and used to obtain images collected by the industrial camera and calculate a deviation value between the cutting line of the image and the template based on the image. 8. The detection and control system for the cutting position of large-sheet cut products according to claim 7, characterized in that: The information processing module also includes a PLC, which is connected to the computer and the stepper motor respectively, and is used to control the stepper motor to adjust corresponding parameters of the side gauge according to the deviation value. 9. The detection and control system for the cutting position of large cut products according to claim 8, characterized in that it further includes: An alarm device is connected to the information processing module and is used to issue an alarm when the deviation value is greater than a preset value. 10. The detection and control system for the cutting position of large cut products according to claim 9, characterized in that: The PLC is also connected to the alarm device and is used to control the alarm device to issue an alarm when the deviation value is greater than a preset value. 11. The detection and control system for the cutting position of large cut products according to claim 10, characterized in that: The alarm device includes an alarm light.