Weak magnetic displacement shape-adjusting control system and control method for electric permanent magnetic chuck

Abstract

The invention discloses an electric permanent magnetic chuck flux-weakening displacement shape-adjusting control system and control method, and the system comprises an upper computer which is used for transmitting a shape-adjusting command and a flux-adjusting command; the control end of the jacking rod is connected with the output end of the upper computer, and the jacking rod is used for receiving and implementing the shape adjusting command; the input end of the electric permanent magnetic chuck controller is connected with the output end of the upper computer, and the electric permanent magnetic chuck controller is used for receiving the magnetism adjusting command to adjust the magnetic force; the control end of the electric permanent magnetic chuck is connected with the output end of the electric permanent magnetic chuck controller, and the electric permanent magnetic chuck is used for implementing a magnetism adjusting command; the pressure sensor is arranged on the electric permanent magnetic chuck, the output end of the pressure sensor is connected with the input end of the upper computer, the pressure sensor is used for detecting the pressure between the electric permanent magnetic chuck and the mold and providing pressure data for the upper computer, and by means of the system, the molded surface adjusting precision can be improved, and the situation that the molded surface is separated from the electric permanent magnetic chuck when moving is avoided.

Description

Technical Field

[0001] The invention belongs to the technical field of electric permanent magnetic chuck shape adjustment, and in particular relates to a weak magnetic displacement shape adjustment control system and a control method for an electric permanent magnetic chuck. Background Art

[0002] In the development of economic activities, molds play a vital role and are an indispensable tool for the development of high-tech driven and pillar industries. Driven by the increasing demand, mold manufacturers are constantly improving their technical means, and users' demand for mold quality is also increasing, which puts forward higher standards for the mold production industry. Among them, the mold surface adjustment accuracy is one of the important issues that many manufacturers are concerned about. The higher the surface adjustment accuracy, the better the quality of the mold produced. For adsorption-type molds, electric permanent magnetic chucks are one of the important equipment for adjusting the surface.

[0003] The electric permanent magnetic chuck is a chuck that relies on permanent magnetic steel to generate suction force, and uses the excitation coil to control the suction force of the magnetic steel, which acts as a suction switch. At present, due to its strong magnetic suction force, high safety factor, convenient operation, strong transplantation ability, energy saving and environmental protection, it has been fully applied in various mold industries, steel loading and unloading, cargo lifting, etc., and has achieved fruitful results;

[0004] Invention patent CN115815507A proposes an electromagnetic adsorption device, which adsorbs the upper and lower molds of the mold to achieve mold closing or separation, and uses a lifting roller to adjust the mold. Therefore, this device for adjusting the molding surface cannot adjust the size of the electromagnetic suction force, and the pressure between the mold and the adsorption device is unclear. When adjusting the molding surface, the surface cannot move due to excessive pressure, and the surface will detach during movement due to insufficient pressure, thereby affecting the molding surface adjustment accuracy. Summary of the invention

[0005] In order to at least partially solve the technical problems existing in the above-mentioned prior art, the present invention provides a weak magnetic displacement and shaping control system and a control method for an electric permanent magnetic chuck.

[0006] In the first aspect, the electric permanent magnetic chuck weak magnetic displacement and shaping control system of the present invention comprises:

[0007] A host computer, which is used to send a shape adjustment command and a magnetic adjustment command;

[0008] A lifting rod, the control end of which is connected to the output end of the host computer and is used to receive and implement the adjustment command;

[0009] An electric permanent magnetic chuck controller, the input end of which is connected to the output end of the host computer, and is used to receive a magnetic adjustment command to adjust the magnetic force;

[0010] An electric permanent magnetic chuck, wherein the electric permanent magnetic chuck control terminal is connected to the output terminal of the electric permanent magnetic chuck controller, and is used to implement a magnetic adjustment command;

[0011] A pressure sensor is arranged on the electro-permanent magnetic chuck, and an output end of the pressure sensor is connected to an input end of the host computer, and is used to detect the pressure between the electro-permanent magnetic chuck and the mold, and provide pressure data to the host computer.

[0012] Furthermore, in the above-mentioned weak magnetic displacement and shaping control system of the electro-permanent magnetic chuck, the pressure sensor is a thin film sensor.

[0013] In a second aspect, the present invention further provides a method for controlling the weak magnetic displacement and shaping of an electric permanent magnetic chuck, comprising:

[0014] When the molding surface needs to be adjusted, the adjustment signal is transmitted to the upper computer, and the upper computer sends an adjustment command to the lifting rod control end to adjust the movement of the lifting rod. At the same time, the upper computer also sends a magnetic adjustment command to the electric permanent magnetic chuck controller. At this time, the output excitation current of the electric permanent magnetic chuck controller is reduced, and the magnetic field of the chuck is reduced, thereby reducing the pressure between the chuck and the mold;

[0015] The displacement of the lifting rod when it rises or falls is different, and the pressure between the suction cup and the mold is also different. The upper computer continues to send magnetic adjustment commands according to the value of the pressure sensor to ensure that the pressure between the mold and the suction cup is in a stable range, maintaining 1 / 3 to 1 / 2 of the pressure in the fully magnetized state, so that the mold can move while not leaving the permanent magnetic suction cup;

[0016] After the adjustment of the molding surface is completed, the lifting rod stops moving, and the upper computer controls the permanent magnetic chuck controller to restore the permanent magnetic chuck to a fully magnetized state. At this time, the maximum pressure between the chuck and the mold is restored to fix the molding surface and prevent the mold from moving.

[0017] The weak magnetic displacement and shaping control system and control method of the electric permanent magnetic chuck of the present invention have the following advantages and beneficial effects:

[0018] The present invention can monitor the pressure between the electric permanent magnetic chuck and the mold in real time and change the magnetic force output by the electric permanent magnetic chuck according to the pressure value, effectively ensuring that the molding surface will not separate from the electric permanent magnetic chuck while moving, avoiding misalignment between the molding surface and the chuck, and avoiding movement when the molding is not adjusted, thereby effectively improving the adjustment accuracy of the molding surface. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the prior art descriptions. Obviously, the drawings in the following descriptions are only used to further understand the embodiments of the present invention and constitute a part of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. In the drawings:

[0020] Figure 1 It is a schematic diagram of the structure of the lifting mechanism in the embodiment;

[0021] Figure 2 It is a structural diagram of the weak magnetic displacement and shaping control system of the electric permanent magnetic chuck of the present invention.

[0022] Description of reference numerals:

[0023] 1: pressure sensor, 2: electric permanent magnetic chuck, 3: universal ball head, 4: lifting rod, 5: lifting rod support tube, 6: lifting rod control end. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the specific embodiments of the present invention and the corresponding drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0025] Example 1

[0026] like Figure 1 to Figure 2 As shown, an embodiment of the present invention provides an electric permanent magnetic chuck weak magnetic displacement and shaping control system, the system comprising:

[0027] Host computer, which is used to send type adjustment commands and magnetic adjustment commands;

[0028] Lifting rod, the control end of the lifting rod is connected to the output end of the host computer, and is used to receive and implement the adjustment command;

[0029] The electric permanent magnetic chuck controller, the input end of the electric permanent magnetic chuck controller is connected to the output end of the host computer, and is used to receive a magnetic adjustment command to adjust the magnetic force;

[0030] An electric permanent magnetic chuck, wherein the control end of the electric permanent magnetic chuck is connected to the output end of the electric permanent magnetic chuck controller, and is used to implement a magnetic adjustment command;

[0031] The pressure sensor is arranged on the electric permanent magnetic chuck, and the output end of the pressure sensor is connected to the input end of the host computer, and is used to detect the pressure between the electric permanent magnetic chuck and the mold, and provide pressure data to the host computer.

[0032] Furthermore, in the weak magnetic displacement and shaping control system of the electric permanent magnetic chuck of the present invention, the pressure sensor is a thin film sensor.

[0033] Specifically, when the lifting mechanism is controlled by the weak magnetic displacement and shaping control system of the electric permanent magnetic suction cup of the present invention, the upper computer sends a shaping command and a magnetic adjustment command at the same time. At this time, the shaping command controls the lifting rod control end 6 to extend and retract the lifting rod 4 in the lifting rod support tube 5, wherein the lifting rod control end 6 can be a motor or a hydraulic press, and the electric permanent magnetic suction cup 2 at the top of the lifting rod 4 is in contact with the molding surface after being adjusted by the universal ball head 3. The magnetic adjustment command controls the magnetic force of the electric permanent magnetic suction cup 2 through the electric permanent magnetic suction cup controller. During normal adsorption, the suction force of the electrophoretic magnetic suction cup 2 is the maximum. When adjusting, the pressure between the electric permanent magnetic suction cup and the mold is visualized through the pressure sensor 1, and the pressure between the electric permanent magnetic suction cup 2 and the mold provided by the pressure sensor 1 is adjusted to effectively prevent the electric permanent magnetic suction cup 2 from being separated from the mold;

[0034] Preferably, the pressure sensor adopts a thin film sensor, which can minimize the impact on the electro-permanent magnetic chuck when adsorbing the mold.

[0035] Example 2

[0036] like Figure 2 As shown, the present invention also provides a method for controlling the weak magnetic displacement and shaping of an electric permanent magnetic chuck, comprising:

[0037] When the molding surface needs to be adjusted, the adjustment signal is transmitted to the upper computer, and the upper computer sends an adjustment command to the lifting rod control end to adjust the movement of the lifting rod. At the same time, the upper computer also sends a magnetic adjustment command to the electric permanent magnetic chuck controller. At this time, the output excitation current of the electric permanent magnetic chuck controller is reduced, and the magnetic field of the chuck is reduced, thereby reducing the pressure between the chuck and the mold;

[0038] The displacement of the lifting rod when it rises or falls is different, and the pressure between the suction cup and the mold is also different. The upper computer continues to send magnetic adjustment commands according to the value of the pressure sensor to ensure that the pressure between the mold and the suction cup is in a stable range, maintaining 1 / 3 to 1 / 2 of the pressure in the fully magnetized state, so that the mold can move while not leaving the permanent magnetic suction cup;

[0039] After the adjustment of the molding surface is completed, the lifting rod stops moving, and the upper computer controls the permanent magnetic chuck controller to restore the permanent magnetic chuck to a fully magnetized state. At this time, the maximum pressure between the chuck and the mold is restored to fix the molding surface and prevent the mold from moving.

[0040] In summary, compared with the prior art, the electric permanent magnetic chuck weak magnetic displacement and shaping control system and control method of the present invention have the following advantages and beneficial effects:

[0041] The present invention can monitor the pressure between the electric permanent magnetic chuck and the mold in real time through the pressure sensor. The upper computer changes the magnetic force output by the electric permanent magnetic chuck through the electric permanent magnetic chuck controller according to the pressure value, effectively ensuring that the mold surface will not separate from the fixed permanent magnetic chuck while moving, avoiding misalignment between the mold surface and the chuck, and avoiding movement when the mold is not adjusted, thereby effectively improving the adjustment accuracy of the mold surface.

[0042] It should be noted that, in this article, unless otherwise clearly specified and limited, the term "connection" or its synonyms should be understood in a broad sense. For example, "connection" can be a fixed connection or a detachable connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances. Moreover, expressions such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. At the same time, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such a process, method, article or device. In addition, "front", "back", "left", "right", "upper" and "lower" in this article are all referenced to the placement state shown in the accompanying drawings.

[0043] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A weak magnetic displacement and shaping control system for an electric permanent magnetic chuck, characterized in that: include: A host computer, which is used to send a shape adjustment command and a magnetic adjustment command; A lifting rod, the control end of which is connected to the output end of the host computer and is used to receive and implement the adjustment command; An electric permanent magnetic chuck controller, the input end of which is connected to the output end of the host computer, and is used to receive a magnetic adjustment command to adjust the magnetic force; An electric permanent magnetic chuck, wherein the electric permanent magnetic chuck control terminal is connected to the output terminal of the electric permanent magnetic chuck controller, and is used to implement a magnetic adjustment command; A pressure sensor is arranged on the electro-permanent magnetic chuck, and an output end of the pressure sensor is connected to an input end of the host computer, and is used to detect the pressure between the electro-permanent magnetic chuck and the mold, and provide pressure data to the host computer.

2. The weak magnetic displacement and shaping control system of the electric permanent magnetic chuck according to claim 1 is characterized in that: The pressure sensor adopts a thin film sensor.

3. A method for controlling the weak magnetic displacement and shaping of an electric permanent magnetic chuck implemented by using the weak magnetic displacement and shaping control system of the electric permanent magnetic chuck according to any one of claims 1 to 2, characterized in that: include: When the molding surface needs to be adjusted, the adjustment signal is transmitted to the upper computer, and the upper computer sends an adjustment command to the lifting rod control end to adjust the movement of the lifting rod. At the same time, the upper computer also sends a magnetic adjustment command to the electric permanent magnetic chuck controller. At this time, the output excitation current of the electric permanent magnetic chuck controller is reduced, and the magnetic field of the chuck is reduced, thereby reducing the pressure between the chuck and the mold; The displacement of the lifting rod when it rises or falls is different, and the pressure between the suction cup and the mold is also different. The upper computer continues to send magnetic adjustment commands according to the value of the pressure sensor to ensure that the pressure between the mold and the suction cup is in a stable range, maintaining 1 / 3 to 1 / 2 of the pressure in the fully magnetized state, so that the mold can move while not leaving the permanent magnetic suction cup; After the adjustment of the molding surface is completed, the lifting rod stops moving, and the upper computer controls the permanent magnetic chuck controller to restore the permanent magnetic chuck to a fully magnetized state. At this time, the maximum pressure between the chuck and the mold is restored to fix the molding surface and prevent the mold from moving.

Images