Visual synergy discharging control system of extruding machine

Abstract

The invention provides a visual synergy discharging control system of an extruding machine. The visual synergy discharging control system comprises a visual unit, a guide unit, a PLC control unit and an HIM human-computer interface, the visual unit is used for shooting an image of a discharge port profile, comparing and analyzing the image, determining the surface characteristics, the boundary dimension and the distance from the discharge port of the profile, calculating the distance that the guide unit needs to act, and sending an action signal to the PLC control unit; and the PLC control unit receives an action signal sent by the visual unit, controls the guide unit to move, and performs guide treatment on the direction of the extrusion outlet profile, so that the central line of the profile is consistent with the central line of the die. Self-adaptive matching of the guide values of all the guide rollers is achieved, the adaptive values of all the guide rollers are dynamically adjusted in a closed-loop mode in real time, the accuracy and stability of extrusion production line profile discharging guide are guaranteed, and the intelligent level of extrusion production line discharging guide control is greatly improved.

Description

Technical Field

[0001] The invention belongs to a visual collaborative discharging control system for an extruder, and particularly relates to a visual collaborative discharging control system for an extruder. Background Art

[0002] During the extrusion production process of an aluminum profile extrusion production line, especially when the profile just comes out of the mold during the trial mold of a new product, it is necessary to observe the state of the extruded profile to distinguish whether there are damage phenomena such as "blooming", and at the same time, it is necessary to correct the up, down, left, and right directions of the profile according to the position where the profile comes out of the extrusion port when the profile exits the extrusion port, so as to make the center line of the profile coincide with the center line of the mold.

[0003] At present, the observation of the discharged profile in the extrusion production line mainly relies on personnel standing at the extrusion outlet to observe with the eyes. Since there will be splashing phenomena during discharging, this method has certain safety hazards. When the extruded profile reaches the extrusion outlet, the control of the alignment of the outlet profile is basically achieved by the operator manually adjusting the alignment roller. This operation is relatively cumbersome, its adaptability and automation degree are relatively low, it occupies human resources, and its accuracy and stability are not high. Summary of the Invention

[0004] The purpose of the invention is to provide a visual collaborative discharging control system for an extruder to overcome the above technical problems existing in the prior art.

[0005] For this reason, the technical solution provided by the invention is as follows: A visual collaborative discharging control system for an extruder includes a visual unit, an alignment unit, a PLC control unit, and a HIM human-machine interface; The visual unit is used to capture images of the profile at the discharge port, compare and analyze the images, determine the surface characteristics, external dimensions, and distance from the discharge port of the profile, calculate the distance that the alignment unit needs to move, and send an action signal to the PLC control unit; The PLC control unit receives the action signal sent by the visual unit, controls the movement of the alignment unit, and corrects the direction of the profile at the extrusion outlet to make the center line of the profile coincide with the center line of the mold; The HIM human-machine interface is electrically connected to the PLC control unit, and real-time displays the operating state of the extrusion process and realizes remote control. The visual unit includes a camera, a power mechanism I, and an industrial computer. There are two cameras, which are respectively installed above and on one side of the discharge port with a 90° difference. The camera is electrically connected to the industrial computer. The industrial computer is installed with an image processing system to compare and analyze the images captured by the two cameras. The power mechanism I is used to drive the camera to move, and the industrial computer is electrically connected to the PLC control system.

[0006] The first power mechanism includes a traveling variable-frequency motor and a first encoder. Both the traveling variable-frequency motor and the first encoder are electrically connected to the PLC control system. The first encoder is used to detect the traveling displacement of the camera in real time.

[0007] A gear is connected to the rotating shaft of the traveling variable-frequency motor. The gear meshes with the rack rail on the mounting frame.

[0008] The guiding unit includes guiding rollers, a guiding structure, an operating variable-frequency motor, and a second encoder. The guiding rollers are connected to the guiding structure. The guiding structure is used to drive the guiding rollers to complete the guiding movement of the extruded material. A driving gear is connected to the rotating shaft of the operating variable-frequency motor. The driving gear meshes with a guiding input gear. Both the operating variable-frequency motor and the second encoder are electrically connected to the PLC control system. The second encoder is used to detect the rotational displacement of the operating variable-frequency motor in real time.

[0009] The guiding rollers are four guiding rollers or six guiding rollers.

[0010] The guiding structure includes a housing and a rotatable disc. An upper guiding groove is formed on the housing. A lower guiding groove is provided on the rotatable disc. The input gear of the guiding roller is arranged between the housing and the rotatable disc.

[0011] The six guiding rollers include an upper guiding roller, a lower guiding roller, a left upper guiding roller, a right upper guiding roller, a left lower guiding roller, and a right lower guiding roller. The left upper guiding roller and the right upper guiding roller are symmetrically installed above the horizontal center line of the extrusion discharge port. The left lower guiding roller and the right lower guiding roller are symmetrically installed below the horizontal center line of the extrusion discharge port. The upper guiding roller and the lower guiding roller are symmetrically installed on the vertical center line of the extrusion discharge port. The six guiding rollers are installed to form a regular hexagon. The six guiding rollers are respectively fixed on corresponding moving plates. The upper guiding grooves are radially arranged in a 60° dispersion. The lower guiding grooves form a regular hexagon. The movement of a single moving plate is restricted to translational motion plus rotational motion through the upper guiding grooves and the lower guiding grooves.

[0012] The four guiding rollers include an upper guiding roller, a lower guiding roller, a left guiding roller, and a right guiding roller. The left guiding roller and the right guiding roller are symmetrically installed on the horizontal center line of the extrusion discharge port. The upper guiding roller and the lower guiding roller are symmetrically installed on the vertical center line of the extrusion discharge port. The four guiding rollers are respectively fixed on corresponding moving plates. The upper guiding grooves are radially arranged in a 90° dispersion. The lower guiding grooves form a square. The movement of a single moving plate is restricted to translational motion plus rotational motion through the upper guiding grooves and the lower guiding grooves.

[0013] A 1 / 4 or 1 / 6 circular arc groove is provided on the housing, and one end of the driving rod of the rotatable disc extends out from the 1 / 4 or 1 / 6 circular arc groove, and the other end is connected to the guiding input gear through a pin hole. The beneficial effects of the present invention are: The extrusion machine vision collaborative discharging control system provided by the present invention judges the profile type and discharging position through the vision unit, and obtains the distance that the guiding unit needs to move, and then sends an action signal to the PLC control unit to perform adaptive matching of the guiding values of each guiding roller, and adjusts the adaptation values of each guiding roller in real-time dynamic closed-loop, ensuring the accuracy and stability of the profile discharging and guiding of the extrusion production line, and greatly improving the intelligent level of the discharging and guiding control of the extrusion production line. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a front structural schematic diagram of an embodiment of the guiding unit of the present invention; Figure 2 is a reverse structural schematic diagram of an embodiment of the guiding unit of the present invention.

[0015] In the figure: 1, driving gear; 2, action frequency conversion motor; 3, guiding pin shaft; 4, profile; 5, camera; 6, rotatable disc; 7, guiding input gear; 8, guiding roller; 9, moving plate; 10, upper guiding groove; 11, lower guiding groove; 12, housing; 13, traveling frequency conversion motor I; 14, traveling frequency conversion motor II; 15, rack rail. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0016] The following specific embodiments illustrate the implementation manners of the present invention, and those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification.

[0017] Now refer to the accompanying drawings to introduce the exemplary embodiments of the present invention. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. These embodiments are provided to disclose the present invention in detail and completely, and to fully convey the scope of the present invention to those skilled in the art. The terms in the exemplary embodiments shown in the drawings are not limitations to the present invention. In the drawings, the same unit / element uses the same reference numeral.

[0018] Unless otherwise specified, the terms (including scientific and technical terms) used herein have the ordinary meaning understood by those skilled in the art. In addition, it can be understood that the terms defined in the commonly used dictionary should be understood to have a meaning consistent with the context of their related fields, and should not be understood as idealized or overly formal meanings.

[0019] Embodiment 1 The present invention provides a visual collaborative discharging control system for an extruder, which includes a visual unit, a guiding unit, a PLC control unit, and a HIM human-machine interface; The visual unit is used to capture an image of the profile 4 at the discharging port, perform comparative analysis on the image, determine the surface characteristics, external dimensions, and the distance from the discharging port of the profile 4, calculate the distance that the guiding unit needs to move, and send an action signal to the PLC control unit; After receiving the action signal sent by the visual unit, the PLC control unit controls the movement of the guiding unit, conducts guiding processing on the direction of the extruded profile 4, and makes the center line of the profile 4 coincide with the center line of the die; The HIM human-machine interface is electrically connected to the PLC control unit, and it can display the operating status of the extrusion process in real time and realize remote control. Without changing the structure of the extruder, the present invention provides a visual collaborative discharging control system for an extrusion production line, which replaces manual labor, realizes intelligent observation after the profile exits the die, and adaptively matches the guiding values of each guiding roller according to the profile type and the change of the discharging position value. At the same time, it can dynamically and closed-loop adjust the adaptation values of each guiding roller 8 in real time, ensuring the accuracy and stability of the profile 4 discharging and guiding in the extrusion production line, and greatly improving the intelligent level of the discharging and guiding control of the extrusion production line.

[0020] Embodiment 2 Based on Embodiment 1, this embodiment provides a visual collaborative discharging control system for an extruder. The visual unit includes two cameras 5, a first power mechanism, and an industrial computer. The two cameras 5 are 90° apart and are respectively installed above and on one side of the discharging port. The cameras 5 are electrically connected to the industrial computer, and the industrial computer is installed with an image processing system to perform comparative analysis on the images captured by the two cameras 5. The first power mechanism is used to drive the movement of the cameras 5, and the industrial computer is electrically connected to the PLC control system.

[0021] The two cameras 5 synchronously capture photos of the discharging state at the discharging port and transmit them to the industrial computer for processing. The cameras 5 convert the captured target into an image signal, transmit it to the image processing system, obtain the morphological information of the captured target, and convert it into a digital signal according to information such as pixel distribution, brightness, and color.

[0022] Embodiment 3 Based on Embodiment 2, this embodiment provides a visual collaborative discharging control system for an extruder. The first power mechanism includes a walking variable-frequency motor and a first encoder. Both the walking variable-frequency motor and the first encoder are electrically connected to the PLC control system, and the first encoder is used to detect the walking displacement of the cameras 5 in real time.

[0023] The PLC control system includes a PLC controller, an analog output module, and an analog input module. Both the analog output module and the analog input module are electrically connected to the PLC controller. The PLC controller and the HMI human-machine interface perform data interaction through TCP / IP communication. The walking variable-frequency motor is signal-connected to the analog output module, and the encoder 1 is signal-connected to the analog input module.

[0024] The PLC control system controls the operation of the walking variable-frequency motor, causing the camera 5 installed above the discharge port to move to the corresponding working position, that is, below the discharge port and above the guiding unit. During the process, the encoder 1 monitors the movement distance of the walking variable-frequency motor in real time and feeds it back to the PLC control system, and stops driving after reaching the position.

[0025] Embodiment 4 Based on Embodiment 3, this embodiment provides a visual collaborative discharge control system for an extruder. A gear is connected to the rotating shaft of the walking variable-frequency motor, and the gear meshes with the rack rail 15 on the mounting frame.

[0026] The walking variable-frequency motor includes the walking variable-frequency motor 13 and the walking variable-frequency motor 14. As Figure 1 shown, the camera 5 in the vertical direction moves vertically. The rotating shaft of the walking variable-frequency motor 13 drives the gear to rotate. The camera 5 in the horizontal direction moves horizontally. The rotating shaft of the walking variable-frequency motor 14 drives the gear to rotate. Both drive the camera 5 connected to the rack rail 15 to move by meshing with the rack rail 15.

[0027] Embodiment 5 Based on Embodiment 1, this embodiment provides a visual collaborative discharge control system for an extruder. The guiding unit includes a guiding roller 8, a guiding structure, an action variable-frequency motor 2, and an encoder 2. The guiding roller 8 is connected to the guiding structure, and the guiding structure is used to drive the guiding roller 8 to complete the guiding movement of the extruded material. A driving gear 1 is connected to the rotating shaft of the action variable-frequency motor 2. The driving gear 1 meshes with a guiding input gear 7. Both the action variable-frequency motor 2 and the encoder 2 are electrically connected to the PLC control system. The encoder 2 is used to detect the rotational displacement of the action variable-frequency motor 2 in real time.

[0028] When the visual unit detects that the extruded material has a position deviation, the PLC control system converts the movement distance of the guiding roller 8 into the action angular displacement of the action variable-frequency motor 2 and sends a signal to drive the action variable-frequency motor 2 to move. During the process, the encoder 2 monitors the movement distance of the action variable-frequency motor 2 and feeds it back to the PLC control system, and stops driving after reaching the position. During the guiding process, the guiding roller 8 contacts the extruded material and pushes it to the center line position of the extrusion port.

[0029] When the visual detection unit detects that the position of the extruded material is normal, it sends a signal to the PLC control system, and the PLC controls the driving and guiding unit to actuate, and the variable-frequency motor 2 resets to the initial state. During the process, the encoder two monitors the movement distance of the motor and feeds it back to the PLC control system, and stops driving after reaching the position.

[0030] Embodiment 6 On the basis of Embodiment 5, this embodiment provides a visual collaborative discharging control system for an extruder, and the guiding roller 8 is a four-guiding roller or a six-guiding roller.

[0031] The four-guiding roller or six-guiding roller can be selected according to requirements, such as the size of the profile 4.

[0032] Embodiment 7 On the basis of Embodiment 6, this embodiment provides a visual collaborative discharging control system for an extruder. The four-guiding roller includes an upper guiding roller, a lower guiding roller, a left guiding roller and a right guiding roller. The left guiding roller and the right guiding roller are symmetrically installed on the horizontal center line of the extrusion discharging port, and the upper guiding roller and the lower guiding roller are symmetrically installed on the vertical center line of the extrusion discharging port.

[0033] The upper guiding roller, the lower guiding roller, the left guiding roller and the right guiding roller are distributed at 90°, and the upper, lower, left and right directions of the profile 4 at the extrusion outlet are guided to make the center line of the profile 4 coincide with the center line of the mold.

[0034] Embodiment 8 On the basis of Embodiment 7, this embodiment provides a visual collaborative discharging control system for an extruder. The guiding structure includes a housing 12 and a rotatable disc 6. An upper guiding groove 10 is formed on the housing 12, a lower guiding groove 11 is provided on the rotatable disc 6, and a guiding input gear 7 is arranged between the housing 12 and the rotatable disc 6; The four guiding rollers 8 are respectively fixed on the corresponding moving plates 9, and a single moving plate 9 is embedded in the upper guiding groove 10 and the lower guiding groove 11 through a guiding pin shaft 3.

[0035] The variable-frequency motor 2 moves, causing the driving gear 1 to rotate. The driving gear 1 meshes with the guiding input gear 7, driving the guiding input gear 7 to rotate and driving the rotatable disc 6 to move, so that the guiding roller 8 on the moving plate 9 moves along the guiding of the upper guiding groove 10 and the lower guiding groove 11, realizing the guiding of the profile 4.

[0036] Embodiment 9 On the basis of Embodiment 8, this embodiment provides a visual collaborative discharging control system for an extruder. The upper guiding groove 10 is radially arranged in a 90° dispersion, the lower guiding groove 11 forms a square, and a single moving plate 9 is restricted to move in a translational plus rotational manner through the upper guiding groove 10 and the lower guiding groove 11.

[0037] A 1 / 4 circular arc groove is formed in the housing 12. One end of the driving rod of the rotatable disc 6 extends out of the 1 / 4 circular arc groove, and the other end is connected to the guiding input gear 7 through a pin hole.

[0038] The movement of a single moving plate 9 is restricted by the upper guiding groove 10 and the lower guiding groove 11 to be a translational motion plus a rotational motion. The movement formed by the four moving plates 9 jointly is to move synchronously towards the center, thereby driving the guiding roller 8 to complete the guiding movement of the extruded material.

[0039] Embodiment 10 Based on Embodiment 8, this embodiment provides a visual collaborative discharging control system for an extruder, as Figure 1 and Figure 2 shown. The six guiding rollers 8 include an upper guiding roller, a lower guiding roller, a left upper guiding roller, a right upper guiding roller, a left lower guiding roller, and a right lower guiding roller. The left upper guiding roller and the right upper guiding roller are symmetrically installed above the horizontal center line of the extrusion discharging port. The left lower guiding roller and the right lower guiding roller are symmetrically installed below the horizontal center line of the extrusion discharging port. The upper guiding roller and the lower guiding roller are symmetrically installed on the vertical center line of the extrusion discharging port. The installation of the six guiding rollers 8 forms a regular hexagon.

[0040] Each guiding roller 8 is respectively fixed on six moving plates 9. The two ends of the guiding pin 3 of the moving plate 9 are respectively embedded into the upper guiding groove 10 and the lower guiding groove 11. The upper guiding groove 10 is directly formed on the upper surface of the housing 12, and the guiding groove is in a ray shape and is arranged in a 60° dispersion. The lower guiding groove 11 is formed on the internally rotatable disc 6 and forms a regular hexagon. The movement of a single moving plate 9 is restricted by the upper guiding groove 10 and the lower guiding groove 11 to be a translational motion plus a rotational motion. The movement formed by the six moving plates 9 jointly is to move synchronously towards the center, thereby driving the guiding roller 8 to complete the guiding movement of the extruded material. The guiding mechanism housing 12 is provided with a 1 / 6 circular arc groove. One end of the driving rod fixed on the rotatable disc 6 extends out of the 1 / 6 circular arc groove, and the other end is connected to the guiding input gear 7 through a pin hole.

[0041] The above examples are only illustrative of the present invention and do not constitute a limitation on the protection scope of the present invention. Any design identical or similar to the present invention falls within the protection scope of the present invention.

Claims

1. A visual collaborative discharging control system for an extruder, characterized in that: Including vision unit, guidance unit, PLC control unit and HIM human-machine interface; The visual unit is used to capture images of the profile at the discharge port, and to compare and analyze the images to determine the surface characteristics, dimensions and distance from the discharge port of the profile, and to calculate the distance that the guiding unit needs to move, and to send an action signal to the PLC control unit; The PLC control unit receives the action signal sent by the visual unit, controls the movement of the guiding unit, and guides the direction of the extruded outlet profile to make the profile center line consistent with the mold center line; The HIM human-machine interface is connected to the PLC control unit by electrical signals, and the operating status of the extrusion process is displayed in real time and remote control is realized.

2. According to claim 1, a visual collaborative discharge control system for an extruder, characterized in that: The visual unit includes a camera, a power mechanism and an industrial computer. There are two cameras, which are installed above and on one side of the discharge port at a 90° difference. The camera is electrically connected to the industrial computer. The industrial computer is equipped with an image processing system to compare and analyze the images taken by the two cameras. The power mechanism is used to drive the camera to move. The industrial computer is connected to the PLC control system by electrical signals.

3. The visual collaborative discharging control system for an extruder according to claim 2, characterized in that: The power mechanism 1 includes a walking frequency conversion motor and an encoder 1, both of which are connected to the PLC control system electrical signal, and the encoder 1 is used to detect the walking displacement of the camera in real time.

4. The visual collaborative discharging control system for an extruder according to claim 3, characterized in that: A gear is connected to the rotating shaft of the travel frequency conversion motor, and the gear is meshed with a rack rail on the mounting frame.

5. The visual collaborative discharging control system for an extruder according to claim 1, characterized in that: The guiding unit includes a guiding roller, a guiding structure, an action variable frequency motor and an encoder 2, the guiding roller is connected to the guiding structure, and the guiding structure is used to drive the guiding roller to complete the guiding movement of the extruded material; A driving gear is connected to the rotating shaft of the motion frequency conversion motor, and the driving gear is meshed with a guide input gear. The motion frequency conversion motor and encoder 2 are both connected to the PLC control system electrical signal, and encoder 2 is used to detect the rotation displacement of the motion frequency conversion motor in real time.

6. The visual collaborative discharging control system for an extruder according to claim 5, characterized in that: The guide rollers are four guide rollers or six guide rollers.

7. The visual collaborative discharging control system for an extruder according to claim 6, characterized in that: The guiding structure comprises a shell and a rotatable disc. An upper guiding groove is provided on the shell, a lower guiding groove is provided on the rotatable disc, and an input gear of the guiding roller is arranged between the shell and the rotatable disc.

8. The visual collaborative discharging control system for an extruder according to claim 7, characterized in that: The six guiding rollers include an upper guiding roller, a lower guiding roller, an upper left guiding roller, an upper right guiding roller, a lower left guiding roller and a lower right guiding roller. The upper left guiding roller and the upper right guiding roller are symmetrically installed above the horizontal center line of the extrusion outlet, the lower left guiding roller and the lower right guiding roller are symmetrically installed below the horizontal center line of the extrusion outlet, and the upper guiding roller and the lower guiding roller are symmetrically installed on the vertical center line of the extrusion outlet. The six guiding rollers are installed to form a regular hexagon; The six guiding rollers are respectively fixed on the corresponding moving plates, the upper guide grooves are radially arranged at 60°, the lower guide grooves form a regular hexagon, and the movement of a single moving plate is limited to translation plus rotation by the upper guide grooves and the lower guide grooves.

9. The visual collaborative discharging control system for an extruder according to claim 7, characterized in that: The four guide rollers include an upper guide roller, a lower guide roller, a left guide roller and a right guide roller, wherein the left guide roller and the right guide roller are symmetrically mounted on the horizontal center line of the extrusion outlet, and the upper guide roller and the lower guide roller are symmetrically mounted on the vertical center line of the extrusion outlet; The four guide rollers are respectively fixed on the corresponding moving plates, the upper guide grooves are radially arranged at 90 degrees, the lower guide grooves form a square, and the movement of a single moving plate is limited to translation plus rotation by the upper guide grooves and the lower guide grooves.

10. The visual collaborative discharging control system for an extruder according to claim 8 or 9, characterized in that: The shell is provided with a 1 / 4 or 1 / 6 arc groove, and the driving rod of the rotatable disc extends from the 1 / 4 or 1 / 6 arc groove and is connected to the guide input gear through a pin hole.

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