Electromagnetic fast change assembly

Abstract

The utility model relates to quick change equipment technical field, propose a kind of electromagnet formula quick change assembly, including installation base, suction plate, power-off electromagnet and magnetic attraction coupling;Magnetic attraction coupling includes first magnetic attraction coupling and second magnetic attraction coupling;First magnetic attraction coupling is installed in installation base, and the side of installation base close to suction plate is located in the side of power-off electromagnet with magnetism;Second magnetic attraction coupling is installed in suction plate, and second magnetic attraction coupling is oppositely arranged with first magnetic attraction coupling;When electromagnet formula quick change assembly is energized, installation base and suction plate are connected by the magnetic force generated under the energization effect of power-off electromagnet, and the magnetic force between second magnetic attraction coupling and first magnetic attraction coupling is generated simultaneously;When electromagnet formula quick change assembly is de-energized, the magnetic force between second magnetic attraction coupling and first magnetic attraction coupling disappears, and installation base and suction plate are connected by the magnetic force still maintained after power-off electromagnet is de-energized.

Description

Technical Field

[0001] This utility model relates to the field of quick-change medical device technology, and in particular to an electromagnet-type quick-change assembly. Background Technology

[0002] Quick-change components, as core modules for enabling rapid tool switching in automated equipment, are widely used in industrial robots, CNC machine tools, and flexible manufacturing systems.

[0003] Traditional quick-change technologies primarily rely on mechanical latches, hydraulic clamps, or ordinary electromagnets for connection and separation. However, these technologies have significant drawbacks in terms of reliability, response speed, and safety during power outages: Limitations of electromagnet solutions: Conventional energized electromagnets lose their magnetic force instantly upon power failure, leading to clamping failure and the potential safety hazard of tools accidentally falling off. While magnetic structures relying solely on permanent magnets can maintain attraction even without power, they cannot achieve rapid separation, requiring additional mechanical unlocking devices and complicating the structure. Insufficient mechanical positioning accuracy: Existing quick-change components often use single electromagnetic engagement or coarse guide pin connections, which are prone to micro-displacement due to vibration or load impacts, affecting… In precision operation scenarios, especially in high-frequency replacement scenarios, mechanical wear can further exacerbate positioning errors. Poor magnetic coupling coordination is another issue: some solutions attempt to combine electromagnets with auxiliary magnetic structures, but these suffer from the following problems: conflicting magnetic circuit designs between the electromagnet and the magnetic components lead to uncontrollable magnetic force superposition or cancellation during power-on / power-off switching; a lack of modular design results in an unreasonable spatial layout of the magnetic contact head and electromagnet; and structural redundancy and maintenance difficulties: existing technologies often rely on integral casting or complex bolt arrays to connect the holding plate and the base, leading to increased weight, inconvenient maintenance and disassembly, and stress concentration that can easily cause fatigue fracture. Utility Model Content

[0004] To address the aforementioned shortcomings, the purpose of this invention is to propose an electromagnet-type quick-change component, which aims to solve the problems of tools easily falling off after power failure, inability to achieve quick connection, and inconvenient operation.

[0005] To achieve this objective, the present invention adopts the following technical solution:

[0006] An electromagnet-type quick-change assembly includes a mounting base, a holding plate, a de-energized electromagnet, and a magnetic connector;

[0007] The magnetic connector includes a first magnetic connector and a second magnetic connector;

[0008] The first magnetic connector is mounted on the mounting base, and the magnetic side of the de-energized electromagnet is located on the side of the mounting base near the holding plate;

[0009] The second magnetic connector is mounted on the holding plate, and the second magnetic connector is disposed opposite to the first magnetic connector;

[0010] When the electromagnet-type quick-change assembly is energized, the mounting base and the holding plate are connected by the magnetic force generated by the energized de-energized electromagnet, and at the same time, a magnetic force is generated between the second magnetic connector and the first magnetic connector.

[0011] When the electromagnet-type quick-change assembly is de-energized, the magnetic force between the second magnetic connector and the first magnetic connector disappears, and the mounting base and the holding plate are connected by the magnetic force that is still maintained after the de-energized electromagnet is de-energized.

[0012] Preferably, the suction plate is provided with an embedding hole, and a circular plate is installed at the bottom of the embedding hole. Both the suction plate and the circular plate are provided with threaded through holes at the bottom of the embedding hole. The suction plate and the circular plate are connected at the threaded through holes by countersunk bolts.

[0013] When the mounting base is connected to the holding plate, the magnetic side of the de-energized electromagnet is embedded in the embedding hole.

[0014] Furthermore, the circular plate has four threaded through holes, which are evenly distributed along the circumference.

[0015] The number of threaded holes on the suction plate is four, and the positions of the threaded holes on the suction plate correspond one-to-one with the positions of the threaded holes on the circular plate.

[0016] Preferably, the first magnetic connector includes a convex column and a plurality of first contact heads, wherein the first contact heads are disposed on the top of the convex column;

[0017] The second magnetic connector includes a recessed cavity and a second contact head that is the same number and position as the first contact head, with the second contact head disposed in the recessed cavity.

[0018] Preferably, the second contact head has a cylindrical structure.

[0019] Preferably, the mounting base has a positioning pin on the side near the suction plate, and the suction plate has pin holes of the same number and corresponding position as the positioning pin.

[0020] Preferably, the number of locating pins is two and they are located at opposite corners of the mounting base, and the pin holes are circular.

[0021] One of the above technical solutions has the following advantages or beneficial effects:

[0022] This invention employs a de-energized electromagnet to prevent accidental release of the quick-change assembly in a power-off state, significantly improving the safety and reliability of the quick-change assembly and making it suitable for industrial scenarios with high safety requirements. Simultaneously, the magnetic connector further enhances connection stability. In the energized state, a magnetic force is generated between the first and second magnetic connectors, which, together with the magnetic force of the de-energized electromagnet, makes the connection between the mounting base and the holding plate more secure, reducing production accidents and equipment damage caused by loose connections. Furthermore, when energized, the de-energized electromagnet and the magnetic connector simultaneously generate magnetic force, achieving rapid connection and meeting the rapid response requirements of the quick-change assembly. The embedded holes on the holding plate ensure a uniform distribution of the holding force between the de-energized electromagnet and the holding plate, improving the stability and reliability of the holding and effectively preventing loosening or displacement during the holding process. Both the circular plate and the holding plate are provided with threaded through holes, which are connected by countersunk bolts. There are four threaded through holes in each plate, which are evenly distributed along the circumference. This prevents excessive local stress during the holding process, which could lead to loosening or displacement of the circular plate, reduces fatigue damage caused by stress concentration, and extends the service life of the quick-change assembly. Attached Figure Description

[0023] Figure 1 This is a first structural schematic diagram of an electromagnet-type quick-change assembly provided in one embodiment of the present invention;

[0024] Figure 2 This is a schematic diagram of the second structure of an electromagnet-type quick-change assembly provided in one embodiment of the present invention;

[0025] Figure 3 This is a schematic diagram of the holding plate of an electromagnet-type quick-change assembly provided in one embodiment of the present invention;

[0026] Figure 4 This is a schematic diagram of the structure of the first magnetic connector of the electromagnet-type quick-change assembly provided in one embodiment of the present invention;

[0027] Figure 5 This is a schematic diagram of the structure of the second magnetic connector of the electromagnet-type quick-change assembly provided in one embodiment of the present invention;

[0028] The components include: mounting base 1, de-energized electromagnet 11, first magnetic connector 12, convex column 121, first contact head 122, holding plate 2, embedded hole 21, second magnetic connector 22, recessed cavity 221, second contact head 222, circular plate 23, threaded through hole 231, positioning pin 3, and pin hole 4. Detailed Implementation

[0029] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0030] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0031] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0032] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0033] Quick-change components, as core modules for enabling rapid tool switching in automated equipment, are widely used in industrial robots, CNC machine tools, and flexible manufacturing systems.

[0034] Traditional quick-change technologies primarily rely on mechanical latches, hydraulic clamps, or ordinary electromagnets for connection and separation. However, these technologies have significant drawbacks in terms of reliability, response speed, and safety during power outages: Limitations of electromagnet solutions: Conventional energized electromagnets lose their magnetic force instantly upon power failure, leading to clamping failure and the potential safety hazard of tools accidentally falling off. While magnetic structures relying solely on permanent magnets can maintain attraction even without power, they cannot achieve rapid separation, requiring additional mechanical unlocking devices and complicating the structure. Insufficient mechanical positioning accuracy: Existing quick-change components often use single electromagnetic engagement or coarse guide pin connections, which are prone to micro-displacement due to vibration or load impacts, affecting… In precision operation scenarios, especially in high-frequency replacement scenarios, mechanical wear can further exacerbate positioning errors. Poor magnetic coupling coordination is another issue: some solutions attempt to combine electromagnets with auxiliary magnetic structures, but these suffer from the following problems: conflicting magnetic circuit designs between the electromagnet and the magnetic components lead to uncontrollable magnetic force superposition or cancellation during power-on / power-off switching; a lack of modular design results in an unreasonable spatial layout of the magnetic contact head and electromagnet; and structural redundancy and maintenance difficulties: existing technologies often rely on integral casting or complex bolt arrays to connect the holding plate and the base, leading to increased weight, inconvenient maintenance and disassembly, and stress concentration that can easily cause fatigue fracture.

[0035] Therefore, an electromagnet-type quick-change assembly is proposed, such as... Figure 1-5 As shown, a preferred embodiment of this utility model includes a mounting base 1, a holding plate 2, a de-energized electromagnet 11, and a magnetic connector;

[0036] The magnetic connector includes a first magnetic connector 12 and a second magnetic connector 22;

[0037] The first magnetic connector 12 is mounted on the mounting base 1, and the magnetic side of the de-energized electromagnet 11 is located on the side of the mounting base 1 near the holding plate 2.

[0038] The second magnetic connector 22 is mounted on the holding plate 2, and the second magnetic connector 22 is arranged opposite to the first magnetic connector 12;

[0039] When the electromagnet-type quick-change assembly is energized, the mounting base 1 and the holding plate 2 are connected by the magnetic force generated by the energized de-energized electromagnet 11, and at the same time, a magnetic force is generated between the second magnetic connector 22 and the first magnetic connector 12.

[0040] When the electromagnet-type quick-change assembly is de-energized, the magnetic force between the second magnetic connector 22 and the first magnetic connector 12 disappears, and the mounting base 1 and the holding plate 2 are connected by the magnetic force that is still maintained after the de-energized electromagnet 11 is de-energized.

[0041] The de-energized electromagnet 11 is an electromagnet that retains its magnetic force even after power is cut off. Its working principle utilizes the magnetic field generated by a permanent magnet to maintain the magnetization state of the core and armature after power is cut off, ensuring the armature remains in the attracted position. The magnetization directions of the core and armature reverse, releasing the armature and preventing accidental release during power outages. The magnetic connector is a connection device that achieves opening and closing through electromagnetic conversion, controlled by a circuit switch. During installation, the de-energized electromagnet 11 is first fixed to the mounting base 1, ensuring its magnetic side faces the holding plate 2. Then, the first magnetic connector 12 and the second magnetic connector 22 are installed, ensuring they generate mutual magnetic attraction when energized. When the electromagnet-type quick-change assembly is energized, the de-energized electromagnet 11 generates magnetic force, connecting the mounting base 1 to the holding plate 2. Simultaneously, magnetic force is also generated between the first magnetic connector 12 and the second magnetic connector 22, further enhancing the stability of the connection. Among them, the energized connection refers to the connection between the components by supplying power to the de-energized electromagnet 11 and the magnetic connector to generate magnetic force. The magnitude of the magnetic force is related to factors such as the magnitude of the current, the number of turns of the coil, and the properties of the magnetic material.

[0042] This invention employs a de-energized electromagnet 11, which, after power failure, relies on the magnetic field generated by a permanent magnet to maintain the magnetization state of the core and armature, keeping the armature in the attracted position and preventing accidental release during power failure. This feature ensures that tools or components will not fall off due to the loss of magnetism in the event of an accidental power failure or emergency, significantly improving the safety and reliability of quick-change components. It is particularly suitable for industrial scenarios with high safety requirements, such as robot operation on automated production lines. The magnetic connector further enhances the stability of the connection. In the energized state, a magnetic force is generated between the first magnetic connector 12 and the second magnetic connector 22, which works together with the magnetic force of the de-energized electromagnet 11 to make the connection between the mounting base 1 and the holding plate 2 more secure. Even in high-vibration, high-load working environments, the reliability of the connection can be guaranteed, reducing production accidents and equipment damage caused by loose connections. It also meets the rapid response requirement of quick-change components, allowing for immediate connection upon power-on.

[0043] Preferably, the suction plate 2 is provided with an embedding hole 21, and a circular plate 23 is installed at the bottom of the embedding hole 21. Both the suction plate 2 and the circular plate 23 are provided with threaded through holes 231 at the bottom of the embedding hole 21. The suction plate 2 and the circular plate 23 are connected at the threaded through holes 231 by countersunk bolts.

[0044] When the mounting base 1 is connected to the holding plate 2, the magnetic side of the de-energized electromagnet 11 is embedded in the embedding hole 21.

[0045] Specifically, the embedded hole 21 refers to a groove or hole machined on the holding plate 2 to accommodate the circular plate 23 and the de-energized electromagnet 11. The circular plate 23 can be a circular metal plate, which is fixed to the holding plate 2 by countersunk bolts to improve the holding stability. The threaded through hole 231 is a hole with internal threads machined on the holding plate 2 and the circular plate 23 for installing countersunk bolts.

[0046] The size of the insertion hole 21 should be slightly larger than that of the de-energized electromagnet 11. Before connecting the mounting base 1 to the holding plate 2, the magnetic surface of the de-energized electromagnet 11 should face the holding plate 2, and it should be slowly inserted into the insertion hole 21 until the magnetic surface of the electromagnet is in contact with the circular plate 23. This design can ensure the uniform distribution of the holding force, improve the stability and reliability of the holding, and effectively prevent loosening or displacement during the holding process, ensuring the performance of the quick-change component under high load and high precision operation.

[0047] Preferably, the circular plate 23 has four threaded through holes 231, which are evenly distributed along the circumference.

[0048] The number of threaded through holes 231 on the suction plate 2 is four, and the positions of the threaded through holes 231 on the suction plate 2 correspond one-to-one with the positions of the threaded through holes 231 on the circular plate 23.

[0049] The holding plate 2 and the circular plate 23 are connected by countersunk bolts. The number of threaded through holes 231 on the circular plate 23 and the number of threaded through holes 231 on the holding plate 2 are both four and evenly distributed along the circumference. This can prevent the circular plate 23 from loosening or shifting due to excessive local stress during the holding process. It can also reduce fatigue damage caused by stress concentration and extend the service life of the quick-change assembly. Especially under high load and frequent operation conditions, it can maintain good performance.

[0050] Preferably, the first magnetic connector 12 includes a convex column 121 and a plurality of first contact heads 122, wherein the first contact heads 122 are disposed on the top of the convex column 121;

[0051] The second magnetic connector 22 includes a recessed cavity 221 and a second contact head 222, which is the same number and position as the first contact head 122. The second contact head 222 is disposed in the recessed cavity 221.

[0052] like Figure 4As shown, the convex column 121 is a columnar structure used to support the first contact head 122. The first contact head 122 is part of the magnetic connector and can be made of magnetic material. It is used to generate a magnetic connection with the second contact head 222. The recessed cavity 221 is a hollow structure used to accommodate the second contact head 222 and the convex column 121. The first contact head 122 and the second contact head 222 can generate a magnetic connection when energized. The second contact head 222 corresponds to the first contact head 122, and their number and position need to be precisely matched to ensure the uniform distribution of magnetic force and the stability of the connection.

[0053] Preferably, the second contact head 222 has a cylindrical structure.

[0054] The cylindrical structure has a symmetrical geometry, which allows the magnetic force to be evenly distributed in all directions of the contact head when the magnetic connector is energized. This uniform magnetic force transmission can ensure that a stable and consistent magnetic force is generated between the first contact head 122 and the second contact head 222, thereby enhancing the reliability of the connection. Compared with contact heads of other shapes, the cylindrical structure can reduce the problem of connection instability or excessive local stress caused by uneven distribution of magnetic force.

[0055] A cylinder is a relatively simple geometric shape with mature processing technology, making it easy to achieve high-precision machining. This ensures that the size and shape of the contact head meet design requirements, improves the interchangeability of parts and assembly efficiency. In addition, the mold making and forming process of cylindrical structures is relatively simple, which helps to reduce production costs and improve production efficiency.

[0056] Preferably, the mounting base 1 has a positioning pin 3 on the side near the suction plate 2, and the suction plate 2 has pin holes 4 with the same number and corresponding positions as the positioning pins 3.

[0057] The locating pin 3 is a pin used to determine the relative position of components. It is typically cylindrical or conical. Its function is to provide precise positioning when the mounting base 1 and the suction plate 2 are connected, ensuring the accuracy and repeatability of the connection. In this embodiment, mounting holes for the locating pin 3 are pre-machined on the mounting base 1. The locating pin 3 is then inserted into the holes and secured using appropriate methods, such as threaded connection, interference fit, or welding, to ensure that the locating pin 3 does not loosen during operation. Subsequently, according to the position and size of the locating pin 3, pin holes 4 are machined at corresponding positions on the suction plate 2. During machining, the diameter and positional tolerances of the holes need to be precisely controlled to avoid dimensional deviations that could prevent the locating pin 3 from being inserted or result in inaccurate connection. When the mounting base 1 and the suction plate 2 are connected, the locating pin 3 is inserted into the pin holes 4 to prevent the mounting base 1 from disconnecting from the suction plate 2 due to rotation.

[0058] Furthermore, the number of positioning pins 3 is two and they are located at opposite corners of the mounting base 1, and the pin holes 4 are circular.

[0059] The diagonal position refers to selecting two opposite corners from the four corners of the mounting base 1 as the installation positions for the locating pin 3. This layout can improve the stability of positioning and prevent the components from rotating or shifting during the connection process. The circular pin hole 4 refers to a circular hole machined on the holding plate 2 that mates with the locating pin 3. Its diameter is slightly larger than the diameter of the locating pin 3 to ensure a certain fit tolerance and positioning accuracy. The circular pin hole 4 makes it easier to install the locating pin 3.

[0060] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions 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 one or more embodiments or examples.

[0061] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. An electromagnet-type quick-change assembly, characterized in that, Includes mounting base, holding plate, de-energized electromagnet and magnetic connector; The magnetic connector includes a first magnetic connector and a second magnetic connector; The first magnetic connector is mounted on the mounting base, and the magnetic side of the de-energized electromagnet is located on the side of the mounting base near the holding plate; The second magnetic connector is mounted on the holding plate, and the second magnetic connector is disposed opposite to the first magnetic connector; When the electromagnet-type quick-change assembly is energized, the mounting base and the holding plate are connected by the magnetic force generated by the energized de-energized electromagnet, and at the same time, a magnetic force is generated between the second magnetic connector and the first magnetic connector. When the electromagnet-type quick-change assembly is de-energized, the magnetic force between the second magnetic connector and the first magnetic connector disappears, and the mounting base and the holding plate are connected by the magnetic force that is still maintained after the de-energized electromagnet is de-energized.

2. The electromagnet-type quick-change assembly according to claim 1, characterized in that, The suction plate is provided with an embedding hole, and a circular plate is installed at the bottom of the embedding hole. Both the suction plate and the circular plate are provided with threaded through holes at the bottom of the embedding hole. The suction plate and the circular plate are connected at the threaded through holes by countersunk bolts. When the mounting base is connected to the holding plate, the magnetic side of the de-energized electromagnet is embedded in the embedding hole.

3. The electromagnet-type quick-change assembly according to claim 2, characterized in that, The circular plate has four threaded through holes, which are evenly distributed along the circumference. The number of threaded holes on the suction plate is four, and the positions of the threaded holes on the suction plate correspond one-to-one with the positions of the threaded holes on the circular plate.

4. The electromagnet-type quick-change assembly according to claim 1, characterized in that, The first magnetic connector includes a convex column and a plurality of first contact heads, wherein the first contact heads are disposed on the top of the convex column; The second magnetic connector includes a recessed cavity and a second contact head that is the same number and position as the first contact head, with the second contact head disposed in the recessed cavity.

5. The electromagnet-type quick-change assembly according to claim 4, characterized in that, The second contact head has a cylindrical structure.

6. The electromagnet-type quick-change assembly according to claim 1, characterized in that, The mounting base has a positioning pin on the side near the suction plate, and the suction plate has pin holes that are the same number and corresponding in position as the positioning pin.

7. The electromagnet-type quick-change assembly according to claim 6, characterized in that, The number of positioning pins is two, and they are located at opposite corners of the mounting base. The pin holes are circular.

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