Magnetic crash avoidance assembly
By using a limiting structure with irregularly shaped magnetic components, the problems of fragile and difficult-to-replace magnetic components are solved, thus achieving easy replacement of magnetic components and high sensitivity of the anti-collision components.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANGHAI EMPOWER TECH CO LTD
- Filing Date
- 2025-05-12
- Publication Date
- 2026-05-29
AI Technical Summary
In existing anti-collision components for laser heads and robotic arms, magnetic parts are prone to breakage and difficult to replace, and residual fixing materials are difficult to remove, affecting the anti-collision effect.
The limiting structure uses irregularly shaped magnetic components to provide a reset force through magnetic force, eliminating the need for additional fixing structures or materials, and the magnetic components are easy to replace.
It simplifies the replacement process of magnetic components, avoids the problem of residual fixing materials, and improves the sensitivity and reliability of the anti-collision components.
Smart Images
Figure CN224295004U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of industrial robot processing technology, and in particular to a magnetic anti-collision component. Background Technology
[0002] In the field of laser processing, the main carriers used for laser heads include planar cutting machine tools, 3D tube cutting machine tools, slide tables, and robotic arms. Whether it's a planar cutting machine tool or a 3D tube cutting machine tool, the plates and tubes processed by the cutting head slide straight down the path. During the cutting motion, the circuitry, pipelines, and optical fibers are all pre-planned, and there are virtually no scrapes or collisions. The main sources of collisions are from the nozzle assembly, which can be largely avoided with the addition of capacitive sensors. However, the profiles processed by robotic arms are irregularly shaped materials that have undergone bending, welding, and other processes. The cutting trajectory of the robotic arm is more variable and complex. The robotic arm is prone to collisions and scrapes with the machine body and pipelines, resulting in unnecessary losses. Therefore, a component is needed to detect and stop the machine promptly when collisions or scrapes occur.
[0003] Existing anti-collision components for laser heads and robotic arms primarily rely on the displacement generated during a collision, which interrupts the electrical signal to determine if a collision has occurred and to promptly stop the laser head and robotic arm. To achieve effective reset and disconnection while maintaining high sensitivity and a simplified structure, researchers have proposed using the magnetic force of a magnetic component fixed within the anti-collision component to provide the reset force. However, due to the brittle nature of permanent magnets, they are prone to breakage during collisions and require frequent replacement; yet, replacing the magnetic components in existing anti-collision components is difficult. Utility Model Content
[0004] The purpose of this application is to provide a magnetic anti-collision component, which uses a limiting structure of a set of magnetically attracted irregularly shaped magnetic components to press the first and second parts of the anti-collision component together. There is no need to set up a separate structure or material to press the first and second parts of the anti-collision component, nor is there a need to set up a separate structure or material for fixing magnetic components that are difficult to remove or have residues. This makes the magnetic components easy to replace and improves the problems of difficult magnetic component replacement and easy residues or deformation of the structure or material for fixing magnetic components in the prior art.
[0005] In order to achieve the above technical objectives, this application provides a magnetic anti-collision component, including a first part, a second part, and a reset part that causes the first part and the second part to press against each other when they are close to or in contact.
[0006] The reset part includes at least one set of magnetic components, which includes a first magnetic component and a second magnetic component respectively disposed in the first part and the second part; the magnetic poles of the first magnetic component and the second magnetic component on the side closest to each other are opposite.
[0007] The first magnetic component and the second magnetic component are both irregularly shaped magnetic components that include a main body and a limiting structure set at an angle of 90°±80° to the main body; the first magnetic component and the second magnetic component are respectively fixed in the first part and the second part by the limiting structure.
[0008] Furthermore, in some embodiments of this application, the ratio of the thickness of the limiting structure to the thickness of the main body is not less than 1 / 6.
[0009] Furthermore, in some embodiments of this application, the ratio of the width of the limiting structure to the width of the main body is not higher than 1 / 2 and not lower than 1 / 10.
[0010] Furthermore, in some embodiments of this application, the first part and the second part are respectively provided with receiving cavities for accommodating the first magnetic component and the second magnetic component, and the receiving cavity has a space for accommodating the limiting structure corresponding to the limiting structure.
[0011] Furthermore, in some embodiments of this application, the limiting structure is an annular limiting structure integrally connected to the main body.
[0012] Furthermore, in some embodiments of this application, no adhesive material is provided at the position where the first magnetic component contacts the first part; no adhesive material is provided at the position where the second magnetic component contacts the second part.
[0013] Furthermore, in some embodiments of this application, the positions where the first magnetic element contacts the first part are in rigid contact; the positions where the second magnetic element contacts the second part are in rigid contact.
[0014] Furthermore, in some embodiments of this application, the first part and the second part are also provided with a first limiting block and a second limiting block corresponding to the first magnetic element and the second magnetic element;
[0015] The first limiting block contacts the side of the first magnetic component away from the second magnetic component; the second limiting block contacts the side of the second magnetic component away from the first magnetic component.
[0016] The first part is provided with a first receiving cavity for accommodating the first limiting block, and the first limiting member is interference-fitted with the first receiving cavity; the second part is provided with a second receiving cavity for accommodating the second limiting member, and the second limiting block is interference-fitted with the second receiving cavity.
[0017] Furthermore, in some embodiments of this application, the first part includes a first mounting base and an electrical signal contact disposed on the first mounting base; the second part includes a second mounting base and an electrical signal contact plate disposed on the second mounting base; the electrical signal contact and the electrical signal contact plate are attracted together and in contact by the first magnetic element and the second magnetic element, and the electrical signal contact and the electrical signal contact plate are separated by the separation of the first magnetic element and the second magnetic element;
[0018] The electrical signal contact and the electrical signal contact plate are connected to an external power source, and form a conductive circuit when the electrical signal contact and the electrical signal contact plate are in contact.
[0019] Furthermore, in some embodiments of this application, the magnetic anti-collision component further includes a positioning part; the positioning part includes a positioning pin and a positioning groove that cooperate with the positioning pin respectively disposed on the first part and the second part; the positioning pin and the positioning groove cooperate.
[0020] This application provides a magnetic anti-collision component. It employs at least one set of irregularly shaped magnetic components, whose magnetic forces exert pressure on corresponding first / second parts, creating opposing pressure between the first and second parts of the anti-collision component. This eliminates the need for additional structures or materials to provide this opposing pressure. Furthermore, the irregularly shaped portions (limiting structures) of the magnetic components allow them to be embedded within the first / second parts, eliminating the need for additional adhesive layers or materials for fixing the magnetic components. This improves upon the difficulty of replacing damaged magnetic components and avoids the drawbacks of adhesive layers or materials that are difficult to remove, prone to residue or reuse, leading to reduced fixing effectiveness and increased susceptibility to collision damage after replacement. The magnetic anti-collision component provided by this application has a simple structure and easy-to-replace magnetic components, facilitating its widespread application. Attached Figure Description
[0021] To more clearly illustrate the technical solutions in the specific embodiments of this application or the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.
[0022] Figure 1 Schematic diagrams of the anti-collision components provided in some embodiments of this application;
[0023] Figure 2 Cross-sectional views of anti-collision components in some embodiments provided in this application;
[0024] Figure 3Schematic diagrams of irregularly shaped magnetic components in some embodiments of the anti-collision assembly provided in this application;
[0025] Explanation of key component symbols:
[0026] 10-First part, 12-First limiting block, 13-First mounting base, 14-Electrical signal contact, 15-Positioning pin, 20-Second part, 22-Second limiting block, 23-Second mounting base, 24-Electrical signal contact plate, 25-Positioning groove, 30-Reset part, 31-First magnetic component, 32-Second magnetic component, 331-Main body, 332-Limiting structure, 40-Steel cable, 50-Signal line. Detailed Implementation
[0027] The technical solutions of this application will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.
[0028] In the description of this application, it should be understood that the terms "upper," "lower," "rear," "left," "right," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not 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 application. Furthermore, the terms "first," "second," "third," and "fourth" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined with "first," "second," "third," and "fourth" may explicitly or implicitly include one or more of the stated features. In the description of this application, "a plurality of" means two or more, unless otherwise explicitly specified.
[0029] The following disclosure provides many different embodiments or examples for implementing different structures of this application. To simplify the disclosure, specific examples of components and arrangements are described below. Of course, these are merely examples and are not intended to limit the scope of this application. Furthermore, reference numerals and / or letters may be repeated in different examples; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed. In addition, various specific examples of processes and materials are provided in this application, but those skilled in the art will recognize the application of other processes and / or the use of other materials.
[0030] To improve the sensitivity of the anti-collision component, when magnetic components are used as reset elements, a group of attracted magnetic components typically contact each other when there is no collision. Since the magnetic components are made of highly brittle, rigid materials, the material absorbs less of the impact force during a collision. However, because these highly brittle magnetic components are in contact without a collision, they experience a greater impact upon impact, potentially leading to breakage. This not only affects the magnetic force of the components but also allows fragments to fall between the first and second parts, preventing the attracted magnetic components from adhering tightly together and thus affecting the anti-collision effect of the component. Therefore, any broken magnetic component requires replacement. In existing technology, adhesive materials are typically used to fix the magnetic components to the first / second part. However, the applicant has found that this fixing method makes replacing the magnetic components difficult, and the adhesive material is difficult to remove completely, often resulting in displacement of the replaced magnetic components. Even when using reusable adhesive materials, the bonding performance deteriorates significantly after several replacements, making it difficult to achieve a satisfactory fixing effect. However, since magnetic components are made of highly brittle materials, using fasteners to fix them can actually affect their strength and reduce their magnetic force. Therefore, the applicant provides a new anti-collision component in this application. This component uses an irregularly shaped magnetic component as a limiting member to provide a fixing structure for the magnetic component on the first / second part, while simultaneously providing opposing pressure for the tight fit between the first and second parts. This eliminates the need for additional fixing structures or materials for the magnetic component, as well as for fixing structures or materials on the first and second parts. Replacing the magnetic component is also much simpler. Since there is no fixing structure or material for the magnetic component, there is no need to worry about poor fixing effect after replacement due to residual fixing material.
[0031] This application provides a magnetic anti-collision component, see reference. Figures 1-3 It includes a first part 10, a second part 20, and a reset part 30 that causes the first part and the second part to press against each other when they are close to or in contact.
[0032] The reset part includes at least one set of magnetic components, which includes a first magnetic component 31 and a second magnetic component 32 respectively disposed in the first part and the second part; the magnetic poles of the first magnetic component and the second magnetic component are opposite on the sides that are close to each other.
[0033] The first magnetic component and the second magnetic component are both irregularly shaped magnetic components, including a main body 331 and a limiting structure 332 arranged at an angle of 90°±80° to the main body; the first magnetic component and the second magnetic component are respectively fixed in the first part and the second part by the limiting structure.
[0034] In this application, the first part and the second part are two structures arranged opposite to each other, and their facing surfaces are a plane, so that when the two are pressed together under the pressure of the reset part, their two facing surfaces are pressed together; and apart from the magnetic force between the magnetic components of the reset part, there are no other forces that attract each other on their two facing surfaces, nor are there any other forces that are equal to or higher than the magnetic force of the reset part.
[0035] The first part 10 includes a first mounting base 13 and an electrical signal contact 14 disposed on the first mounting base; the second part 20 includes a second mounting base 23 and an electrical signal contact plate 24 disposed on the second mounting base 23; the electrical signal contact and the electrical signal contact plate are attracted together by the first magnetic element and the second magnetic element and are in contact, and the electrical signal contact and the electrical signal contact plate are separated by the first magnetic element and the second magnetic element; the electrical signal contact and the electrical signal contact plate are connected to an external power supply and a signal line 50 for conducting electrical signals, such as a cable or wire, and a conductive circuit is formed when the electrical signal contact and the electrical signal contact plate are in contact, and no conductive circuit is formed when they are disconnected.
[0036] In use, when the anti-collision assembly is not impacted, the first and second parts are pressed together by the first and second magnetic components of the reset part. The electrical signal contacts and the electrical signal contact plate form a conductive circuit, which is connected to the laser head or robot arm through a signal line for electrical signal transmission, enabling the robot arm or laser head circuit to be conductive and operate normally. When the robot arm or laser head is impacted, due to the impact force, the first and second magnetic components of the reset part, as well as the first and second parts, will undergo opposite displacements under the impact due to their rigid contact. This causes the electrical signal contact plate and the electrical signal contacts to disconnect, thereby breaking the conductive circuit. The robot arm and laser head then stop moving due to power-off protection.
[0037] In addition, the magnetic anti-collision component also includes a positioning part; the positioning part includes a positioning pin 15 and a positioning groove 25 respectively disposed on the first part and the second part; the positioning pin and the positioning groove cooperate. The positioning pin can be a spherical positioning pin, a conical positioning pin, or a rod-shaped positioning pin, and the positioning groove can be a groove structure corresponding to the structure of the positioning pin. Preferably, a smooth and flexible bushing is provided on the inner side wall of the positioning groove, so that the positioning pin can be quickly embedded into the positioning groove to achieve a good positioning effect, and the reset can guide the positioning pin to be embedded into the positioning groove.
[0038] In some embodiments, the first mounting base includes a first base plate and a first mounting block disposed on the first base plate; the first mounting block is provided with a first receiving cavity for mounting a first magnetic element; the structure of the first receiving cavity is configured according to the structure of the first magnetic element. For example, if the first magnetic element is an L-shaped magnetic element, then the structure of the first receiving cavity is also an L-shaped receiving cavity; if the first magnetic element is a T-shaped magnetic element, then the structure of the first receiving cavity is also a T-shaped receiving cavity. Preferably, the depth of the side of the first receiving cavity corresponding to the limiting structure of the first magnetic element is greater than the thickness of the limiting structure of the first magnetic element, so as to facilitate the additional provision of a limiting block for further limiting the first magnetic element. Similarly, the second mounting base includes a second base plate and a second mounting block disposed on the second base plate; the second mounting block is provided with a second receiving cavity for mounting a second magnetic element; the structure of the second receiving cavity is configured according to the structure of the second magnetic element. For example, if the second magnetic element is an L-shaped magnetic element, then the structure of the second receiving cavity is also L-shaped.
[0039] The second magnetic element is a T-shaped cavity; if the second magnetic element is a T-shaped magnetic element, then the structure of the second cavity is also a T-shaped cavity. Preferably, the depth of the side of the second cavity corresponding to the limiting structure of the second magnetic element is higher than the thickness of the limiting structure of the second magnetic element, so as to facilitate the additional provision of a limiting block for further limiting the second magnetic element.
[0040] When no limiting block is set, the first magnetic component / second magnetic component can also be fixed in the first receiving cavity / second receiving cavity by fixing the first base plate / second base plate to the first mounting block / second mounting block.
[0041] In some embodiments, the limiting structure on the first and second magnetic components of the reset part is an annular limiting structure integrally connected to the main body. More preferably, the depth of the side of the first / second receiving cavity corresponding to the limiting structure of the first / second magnetic component is greater than the thickness of the limiting structure of the first / second magnetic component, for providing the first limiting block 12 / second limiting block 22. Correspondingly, the first limiting block contacts the side of the first magnetic component away from the second magnetic component; the second limiting block contacts the side of the second magnetic component away from the first magnetic component; both the first and second limiting blocks are "[" structures, fastened to the side of the first and second magnetic components away from their mutual contact.
[0042] The first limiting block is interference-fitted with the first receiving cavity; the second limiting block is interference-fitted with the second receiving cavity.
[0043] In some embodiments, the width and thickness of the limiting structure of the irregularly shaped magnetic component used in this application are preferably controlled within a certain range relative to the main body. This is because if the width of the limiting structure relative to the main body is too large, it is prone to breakage at the connection between the limiting structure and the main body during a collision, which is detrimental to the service life of the anti-collision component. On the other hand, if the thickness and width are too small relative to the main body, the clamping force provided will be insufficient, and it will also be prone to breakage. Preferably, the ratio of the thickness of the limiting structure to the thickness of the main body provided in this application is not less than 1 / 6, and more preferably not less than 1 / 5. The ratio of the width of the limiting structure to the width of the main body is not higher than 1 / 2 and not less than 1 / 10.
[0044] It should be noted that no adhesive material is provided at the position where the first magnetic component contacts the first part; no adhesive material is provided at the position where the second magnetic component contacts the second part, and the clamping force is provided only by the magnetic force of the first and second magnetic components.
[0045] It should be noted that the positions where the first magnetic component contacts the first part are all rigid contacts; the positions where the second magnetic component contacts the second part are all rigid contacts, which reduces the absorption of impact force by the material and improves anti-collision sensitivity.
[0046] In some embodiments, the first mounting base / second mounting base is further provided with a steel cable 40 for mounting the collision assembly.
[0047] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.
Claims
1. A magnetic anti-collision component, characterized in that, It includes a first part, a second part, and a reset part that causes the first part and the second part to press against each other when they are close to or in contact; The reset part includes at least one set of magnetic components, which includes a first magnetic component and a second magnetic component respectively disposed in the first part and the second part; the magnetic poles of the first magnetic component and the second magnetic component on the side closest to each other are opposite. The first magnetic component and the second magnetic component are both irregularly shaped magnetic components that include a main body and a limiting structure set at an angle of 90°±80° to the main body; the first magnetic component and the second magnetic component are respectively fixed in the first part and the second part by the limiting structure.
2. The magnetic anti-collision component according to claim 1, characterized in that, The ratio of the thickness of the limiting structure to the thickness of the main body is not less than 1 / 6.
3. The magnetic anti-collision component according to claim 1, characterized in that, The ratio of the width of the limiting structure to the width of the main body is not higher than 1 / 2 and not lower than 1 / 10.
4. The magnetic anti-collision component according to claim 1, characterized in that, The first part and the second part are respectively provided with receiving cavities for accommodating the first magnetic component and the second magnetic component, and the receiving cavity has a space for accommodating the limiting structure corresponding to the limiting structure.
5. The magnetic anti-collision component according to claim 1, characterized in that, The limiting structure is a ring-shaped limiting structure that is integrally connected to the main body.
6. The magnetic anti-collision component according to any one of claims 1 to 5, characterized in that, No adhesive material is provided at the position where the first magnetic component contacts the first part; no adhesive material is provided at the position where the second magnetic component contacts the second part.
7. The magnetic anti-collision component according to claim 6, characterized in that, The positions where the first magnetic component contacts the first part are in rigid contact; the positions where the second magnetic component contacts the second part are in rigid contact.
8. The magnetic anti-collision component according to any one of claims 1 to 5, 7, characterized in that, The first part and the second part are also provided with a first limiting block and a second limiting block corresponding to the first magnetic component and the second magnetic component; The first limiting block contacts the side of the first magnetic component away from the second magnetic component; the second limiting block contacts the side of the second magnetic component away from the first magnetic component. The first part is provided with a first receiving cavity for accommodating a first limiting block, and the first limiting block is interference-fitted with the first receiving cavity; the second part is provided with a second receiving cavity for accommodating a second limiting block, and the second limiting block is interference-fitted with the second receiving cavity.
9. The magnetic anti-collision component according to any one of claims 1 to 5, 7, characterized in that, The first part includes a first mounting base and an electrical signal contact disposed on the first mounting base; the second part includes a second mounting base and an electrical signal contact plate disposed on the second mounting base; the electrical signal contact and the electrical signal contact plate are attracted together and in contact by a first magnetic element and a second magnetic element, and the electrical signal contact and the electrical signal contact plate are separated by the first magnetic element and the second magnetic element. The electrical signal contact and the electrical signal contact plate are connected to an external power source, and form a conductive circuit when the electrical signal contact and the electrical signal contact plate are in contact.
10. The magnetic anti-collision component according to claim 9, characterized in that, It also includes a positioning unit; The positioning part includes a positioning pin and a positioning groove that cooperate with the positioning pin, respectively disposed on the first part and the second part; the positioning pin and the positioning groove cooperate.