Double-metal adjusting device and double-metal adjusting method

Abstract

The invention provides a bimetal adjusting device and a bimetal adjusting method, and relates to the technical field of circuit breaker assembly. The bimetal adjusting device comprises a positioning structure, a servo locking mechanism, a visual detection mechanism and a control unit. The positioning structure is provided with a positioning part used for positioning the device body, the servo locking mechanism is arranged on one side of the positioning structure in the first direction, and the visual detection mechanism is opposite to the positioning part. The control unit is in communication connection with the visual detection mechanism and the servo locking mechanism, the visual detection mechanism is used for transmitting the first size and the second size to the control unit, and the control unit can control the servo locking mechanism to work based on the first size and the second size so as to adjust the feeding depth of the fastener on the bimetallic strip. Thus, the control unit can control the servo locking mechanism to work based on the detection result of the visual detection mechanism, automatic adjustment of the fastener is completed, the pre-calibration efficiency can be improved, and the labor cost can be reduced.

Description

Technical Field

[0001] This application relates to the field of circuit breaker assembly technology, and in particular to a dual-metal adjustment device and a dual-metal adjustment method. Background Technology

[0002] In circuit breakers and other switching devices, a bimetallic strip is typically incorporated into the device body. This bimetallic strip, acting as a current-displacement sensing element, converts overload current into mechanical displacement, which in turn drives the tripping half-shaft via a linkage, causing the circuit breaker to open and thus protecting the circuit it inhabits. Therefore, the specific coordination between the bimetallic strip and the linkage directly affects the circuit breaker's tripping action.

[0003] In related technologies, improper pre-calibration of bimetallic strip installation makes it difficult to control the coordination between the bimetallic strip and the linkage plate, which in turn leads to problems such as early tripping or late tripping of the circuit breaker. Summary of the Invention

[0004] This application provides a bimetallic adjustment device and a bimetallic adjustment method, which makes the installation and pre-calibration of the bimetallic strip more reasonable and convenient, and reduces the possibility of the circuit breaker failing after the bimetallic strip is installed on the device body.

[0005] In a first aspect, this application provides a bimetallic adjustment device for adjusting a fastener along a first direction to pre-calibrate a bimetallic strip to a device body. The bimetallic adjustment device includes a positioning structure, a servo-locking mechanism, a vision inspection mechanism, and a control unit. The positioning structure has a positioning part for positioning the device body. The servo-locking mechanism is located on one side of the positioning structure in the first direction. The vision inspection mechanism is opposite to the positioning part and is used to detect a first dimension between the bimetallic strip and the device body, and a second dimension of the fastener.

[0006] The control unit is communicatively connected to the vision inspection mechanism and the servo fastening mechanism. The vision inspection mechanism is used to transmit the first dimension and the second dimension to the control unit. The control unit can control the servo fastening mechanism to adjust the feed depth of the fastener on the bimetallic strip based on the first dimension and the second dimension.

[0007] In the bimetallic adjustment device proposed in this application, the positioning structure can position the main body of the device through the positioning part, and the control unit can control the servo locking mechanism to work based on the detection results of the vision inspection mechanism to complete the automatic adjustment of the fastener. Thus, on the one hand, the pre-calibration of the bimetallic strip can be made more reliable. On the other hand, the bimetallic adjustment device can also realize automated pre-calibration of the bimetallic strip, improving pre-calibration efficiency and reducing labor costs.

[0008] Optionally, the bimetallic adjustment device also has a second direction that intersects with the first direction. The servo-locking mechanism is slidably disposed along the second direction so that the servo-locking mechanism can adjust the fastener at different positions.

[0009] In this way, the servo clamping mechanism can adjust the feed depth of the fasteners at different positions on the device body, and thus the bimetallic strips at different positions on the device body can be pre-calibrated under the action of the servo clamping mechanism.

[0010] Optionally, the dual-metal adjustment device also includes a conveying mechanism and a gripping mechanism. The conveying mechanism is used to transport the device body, and the positioning structure is spaced apart from the conveying mechanism. The gripping mechanism can move between the conveying mechanism and the positioning structure to grip the device body on the conveying mechanism and place the device body in the positioning section.

[0011] The above settings enable a high degree of automation in the movement and positioning of the main components. This facilitates unmanned operation of the double-metal adjustment device and improves its automation level.

[0012] Optionally, the dual-gold adjustment device also includes a cabinet, with an installation space inside the cabinet, where the positioning structure, servo locking mechanism, and vision inspection mechanism are all located.

[0013] In this way, the cabinet can serve as the housing for the dual-metal adjustment device, providing protection for the internal positioning structure, servo locking mechanism, and vision inspection mechanism.

[0014] Secondly, embodiments of this application also propose a double-gold adjustment method, which is applied to the double-gold adjustment device of any of the first aspects described above. The double-gold adjustment method includes; Positioning device body.

[0015] The first dimension between the bimetallic strip and the linkage plate in the device body, and the second dimension of the fastener are detected.

[0016] The feed depth of the fastener on the bimetallic strip is adjusted according to the first and second dimensions to achieve pre-calibration of the bimetallic strip on the device body.

[0017] Optionally, detecting the second dimension of the fastener includes: Adjust the feed depth of the fastener on the bimetallic strip to bring the fastener to the mechanical limit.

[0018] The distance between the side of the bimetallic strip facing the linkage piece and the side of the fastener facing the linkage piece is used as the second dimension.

[0019] The fastener includes a head and a rod connected in sequence, with the rod passing through a bimetallic strip. A servo-locking mechanism is used to adjust the fastener by means of the side of the head away from the rod.

[0020] When the fastener is mechanically stopped, the bimetallic stop head faces the side of the rod.

[0021] Optionally, the feed depth of the fastener on the bimetallic strip can be adjusted according to the first and second dimensions, including: Identify the model information of the main body of the device and determine the adjustment coefficient.

[0022] The back-off depth is obtained based on the adjustment factor, the first dimension, and the second dimension.

[0023] Fasteners are retracted based on retraction depth.

[0024] Optionally, the servo-locking mechanism can also tighten the locking element on the fastener. After adjusting the feed depth of the fastener on the bimetallic strip according to the first and second dimensions, the method further includes: Tighten the locking element on the fastener until it abuts against the bimetallic strip.

[0025] The locking element is fitted onto the fastener and is located between the head of the fastener and the bimetallic strip.

[0026] Optionally, after mounting the bimetallic strip on the device body, the method further includes: Obtain the preset tripping time corresponding to the main body of the device.

[0027] A tripping test is performed on the main body of the device with the bimetallic strip installed to obtain the actual tripping time.

[0028] The preset tripping time is compared with the actual tripping time to obtain the comparison results.

[0029] If the comparison results indicate a deviation between the actual tripping time and the preset tripping time, the adjustment coefficient is corrected based on the comparison results.

[0030] Optionally, when multiple bimetallic strips on the device body are pre-calibrated using a bimetallic adjustment method, the servo locking mechanism sequentially adjusts the feed depth of the fasteners on the multiple bimetallic strips so that the distance between the end of the multiple fasteners facing the linkage strip and the linkage strip is equal.

[0031] The beneficial effects of the dual-gold adjustment method provided in the second aspect and its various possible designs can be found in the first aspect and its various possible implementations, and will not be repeated here. Attached Figure Description

[0032] Figure 1 This is a schematic diagram of a dual-gold adjustment device according to an embodiment of this application.

[0033] Figure 2 This is a schematic diagram of a dual-gold adjustment device concealing part of the cabinet according to an embodiment of this application.

[0034] Figure 3 This is a schematic diagram showing the relative positions of a bimetallic strip, a linkage piece, and a fastener according to an embodiment of this application.

[0035] Figure 4 This is a partial schematic diagram of a dual-gold adjustment device according to an embodiment of this application.

[0036] Figure 5 This is a step diagram of a dual-gold adjustment method according to an embodiment of this application.

[0037] Figure 6 This is a step diagram of another dual-gold adjustment method according to an embodiment of this application.

[0038] Explanation of reference numerals in the attached figures: 100: Double gold adjustment device; 10: Positioning structure; 20: Servo locking mechanism; 30: Vision inspection mechanism; 40: Conveying mechanism; 50: Grabbing mechanism; 60: Cabinet; X: First direction; Y: Second direction; Z: Third direction.

[0039] 200: Device body; 210: Bimetallic strip; 220: Linkage piece; 230: Fastener; 240: Locking component. Detailed Implementation

[0040] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. 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.

[0041] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used herein in the specification of the application is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms “comprising” and “having”, and any variations thereof, in the specification, claims and drawings of this application are intended to cover non-exclusive inclusion.

[0042] The term "embodiment" as used herein means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of the phrase "embodiment" in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0043] In this article, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can mean: A exists, A and B exist simultaneously, or B exists. Additionally, the character " / " in this article generally indicates that the preceding and following related objects have an "or" relationship.

[0044] The directional terms appearing in the following description refer to the directions shown in the figures and are not intended to limit the specific structure of this application. For example, in the description of this application, the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the figures. They 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. Therefore, they should not be construed as limitations on this application.

[0045] Furthermore, the terms "first," "second," etc., in the specification and claims of this application or in the aforementioned drawings are used to distinguish different objects rather than to describe a specific order, and may explicitly or implicitly include one or more of the features.

[0046] In the description of this application, unless otherwise stated, "multiple" means two or more (including two), and similarly, "multiple groups" means two or more (including two groups).

[0047] In the description of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, "connection" or "linking" in mechanical structures can refer to a physical connection, such as a fixed connection, for example, a connection fixed by a partition, such as a connection fixed by screws, bolts, or other partitions; a physical connection can also be a detachable connection, such as a snap-fit ​​or interlocking connection; a physical connection can also be an integral connection, such as a connection formed by welding, bonding, or integral molding. Communication connections, in addition to signal connections via circuits, can also refer to signal connections via media, such as radio waves. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0048] It should be understood that the phrase "one embodiment" or "an embodiment" throughout the specification means that a specific feature, structure, or characteristic related to the embodiment is included in at least one embodiment of this application. Therefore, "in one embodiment" or "in an embodiment" appearing throughout the specification does not necessarily refer to the same embodiment. Furthermore, these specific features, structures, or characteristics can be combined in any suitable manner in one or more embodiments.

[0049] A circuit breaker is a protective device in a power system used to actively disconnect or connect circuits and quickly isolate risks during faults. Specifically, a circuit breaker may include a bimetallic strip and a device body, with the bimetallic strip mounted on the device body. Thus, under abnormal operating conditions, the bimetallic strip can deform and act on the device body, causing the circuit breaker to trip based on the action of the device body.

[0050] Specifically, the main body of the device may include a linkage plate, and a fastener is provided on the bimetallic strip. The fastener has a portion extending from the bimetallic strip and facing the linkage plate. When the bimetallic strip deforms, it can apply force to the linkage plate through the fastener, thereby realizing the tripping of the circuit breaker. Obviously, the setting of the fastener directly affects the response speed of the linkage plate. An unreasonable fastener setting will cause the circuit breaker to trip prematurely or late, directly affecting the qualification rate of the circuit breaker.

[0051] Currently, fastener installation is mostly done manually based on experience. This results in poor adjustment accuracy and consistency, high skill requirements for operators, and low efficiency. Consequently, the adjustment of fasteners on bimetallic strips is difficult to control, easily leading to problems such as premature or delayed tripping of assembled circuit breakers.

[0052] Based on the above problems, this application proposes a bimetallic adjustment device and a bimetallic adjustment method, which can make the installation of the bimetallic strip more reasonable and convenient, and reduce the possibility of circuit breaker failure due to unreasonable fastener position after the bimetallic strip is installed on the device body.

[0053] The dual-gold adjustment device 100 provided in the embodiments of this application will now be described in detail with reference to the accompanying drawings.

[0054] This application provides a bimetallic adjustment device 100 for adjusting a fastener 230 along a first direction X to pre-calibrate the bimetallic strip 210 to the device body 200. (Refer to...) Figure 1 , Figure 2 and Figure 3 As shown, the bimetallic adjustment device 100 includes a positioning structure 10, a servo locking mechanism 20, a vision inspection mechanism 30, and a control unit. The positioning structure 10 is provided with a positioning part for positioning the device body 200. The servo locking mechanism 20 is located on one side of the positioning structure 10 in the first direction X. The vision inspection mechanism 30 is opposite to both the positioning part and the support plate. The vision inspection mechanism 30 is used to detect the first dimension between the bimetallic strip 210 and the linkage piece 220 in the device body 200, and the second dimension of the fastener 230.

[0055] The control unit is communicatively connected to the vision inspection mechanism 30 and the servo fastening mechanism 20. The vision inspection mechanism 30 is used to transmit the first dimension and the second dimension to the control unit. The control unit can control the servo fastening mechanism 20 to work based on the first dimension and the second dimension in order to adjust the feed depth of the fastener 230 on the bimetallic strip 210.

[0056] In this embodiment, the positioning structure 10, servo locking mechanism 20, vision inspection mechanism 30, and control unit can cooperate to automatically adjust the fastener 230, thereby achieving pre-calibration of the bimetallic strip 210. The positioning structure 10 is provided with a positioning part for positioning the device body 200. When pre-calibrating the bimetallic strip 210 on the device body 200, the device body 200 can be placed on the positioning part first, so that during the adjustment of the fastener 230 by the bimetallic adjustment device 100, the device body 200 can be in the same position, reducing the possibility of device body 200 shifting.

[0057] The servo locking mechanism 20 is located on one side of the positioning structure 10 in the first direction X. During the operation of the servo locking mechanism 20, the fastener 230 can be screwed to adjust the position of the fastener 230 in the first direction X.

[0058] The visual inspection mechanism 30 is opposite to the positioning part. Therefore, the visual inspection mechanism 30 can perform non-contact ranging on the device body 200 located in the positioning part to detect the first dimension between the bimetallic strip 210 and the linkage strip 220, as well as the second dimension of the fastener 230, so as to provide a basis for subsequent adjustment of the fastener 230.

[0059] The control unit is connected to the vision inspection mechanism 30 and the servo locking mechanism 20. Therefore, the vision inspection mechanism 30 can send the detected first dimension and second dimension to the control unit. The control unit can calculate the distance between the adjusted fastener 230 and the linkage piece 220 based on the first dimension and the second dimension, and control the servo locking mechanism 20 to tighten the fastener 230 to adjust the feed depth of the fastener 230 on the bimetallic strip 210, thereby achieving pre-calibration of the bimetallic strip 210.

[0060] In summary, in the bimetallic adjustment device 100 proposed in this application, the positioning structure 10 can position the device body 200 through the positioning part, and the control unit can control the servo locking mechanism 20 to work based on the detection results of the vision inspection mechanism 30, thereby completing the automatic adjustment of the fastener 230. This improves the adjustment accuracy and consistency of the fastener 230, making the pre-calibration of the bimetallic strip 210 more reliable. Furthermore, the bimetallic adjustment device 100 enables automated pre-calibration of the bimetallic strip 210, improving pre-calibration efficiency and reducing labor costs.

[0061] It should be noted that, in the embodiments of this application, the fastener 230 may be a screw, stud, bolt, etc., and the embodiments of this application do not specifically limit the specific type of the fastener 230.

[0062] The second dimension can specifically refer to the remaining adjustment amount after the fastener 230 is installed on the bimetallic strip 210. Here, a screw is used as an example for specific explanation.

[0063] The second dimension can be the length of the screw shank minus the length located inside the bimetallic strip 210. When measuring the second dimension, the length of the screw shank on the side of the bimetallic strip 210 facing the linkage plate 220 and the length of the screw shank on the side of the bimetallic strip 210 away from the linkage plate 220 can be obtained separately, and the sum of these lengths will give the second dimension.

[0064] It should also be noted that the visual inspection mechanism 30 can be a charge-coupled device (CCD) or a complementary metal-oxide-semiconductor (CMOS) camera, etc., and this application embodiment does not specifically limit it.

[0065] In some embodiments, such as Figure 2 As shown, the dual-gold adjustment device 100 also has a second direction Y, which intersects with the first direction X. The servo locking mechanism 20 is slidably disposed along the second direction Y so that the servo locking mechanism 20 can adjust the fastener 230 at different positions.

[0066] In this embodiment, the servo locking mechanism 20 is slidably configured so that the position of the servo locking mechanism 20 can be adjusted, thereby changing the relative position between the servo locking mechanism 20 and the positioning structure 10.

[0067] In this way, the servo locking mechanism 20 can adjust the feed depth of the fasteners 230 at different positions on the device body 200, so that the bimetallic strips 210 at different positions on the device body 200 can be pre-calibrated under the action of the servo locking mechanism 20.

[0068] It is understandable that circuit breakers come in different types, such as single-phase circuit breakers, two-phase circuit breakers, three-phase circuit breakers, and four-phase circuit breakers. For different types of circuit breakers, the number of bimetallic strips 210 correspondingly provided on the device body 200 is also multiple. The slidable servo locking mechanism 20 in this application facilitates the adjustment of the bimetallic strips 210 in different types of circuit breakers.

[0069] To minimize disruption to the adjustment cycle and reduce costs, the number of servo locking mechanisms 20 can be two, and both servo locking mechanisms 20 can be slidably configured. This allows for adjustments to the positions of the two servo locking mechanisms 20 to accommodate the adjustment of the bimetallic strip 210 in various types of circuit breakers.

[0070] For example, for a three-phase circuit breaker, one servo locking mechanism 20 can be used to adjust one bimetallic strip 210 first, and then the two servo locking mechanisms 20 can be used to adjust the other two bimetallic strips 210 respectively. Alternatively, two servo locking mechanisms 20 can be used to adjust two bimetallic strips 210 first, and then one servo locking mechanism 20 can be used to adjust the other bimetallic strip 210.

[0071] In some embodiments, such as Figure 2As shown, the dual-metal adjustment device 100 also includes a conveying mechanism 40 and a gripping mechanism 50. The conveying mechanism 40 is used to transport the device body 200. The positioning structure 10 is spaced apart from the conveying mechanism 40. The gripping mechanism 50 can move between the conveying mechanism 40 and the positioning structure 10 to grip the device body 200 on the conveying mechanism 40 and place the device body 200 in the positioning part.

[0072] In this embodiment, the conveying mechanism 40 and the gripping mechanism 50 can cooperate to feed the device body 200. The conveying mechanism 40 can deliver the device bodies 200 in batches and in an orderly manner to the picking position. The gripping mechanism 50 can grip the device bodies 200 located at the picking position and place them on the positioning part, so that the servo locking mechanism 20 can adjust the double metal on the device body 200.

[0073] The above settings enable a high degree of automation in the flow and positioning of the device body 200. This facilitates unmanned operation of the dual-metal adjustment device 100 and improves its level of automation.

[0074] The positioning structure 10 can be positioned opposite the middle of the conveying mechanism 40 in its transport direction, and the part of the conveying mechanism 40 opposite to the positioning structure 10 can be a picking position. The gripping mechanism 50 can pick up the device body 200 from the picking position each time, or place the device body 200 on the positioning part at the picking position.

[0075] Specifically, the conveying mechanism 40 may include a frame and a first conveyor belt and a second conveyor belt arranged opposite each other. The first and second conveyor belts are spaced apart and wound around the frame, and are used to carry and transport the device body 200. Thus, the first and second conveyor belts can be located on both sides of the frame and cooperate to carry and transport the device body 200.

[0076] To facilitate the operation of the gripping mechanism 50, the conveying mechanism 40 is also equipped with a single-piece release mechanism. The single-piece release mechanism specifically includes a blocking member that can slide along a third direction Z. The blocking member is positioned between the first conveyor belt and the second conveyor belt, and there are multiple blocking members in the transport direction of the conveying mechanism 40. These multiple blocking members can respectively block or release multiple device bodies 200 on the conveying mechanism 40.

[0077] When the conveying mechanism 40 transports the device body 200, the blocking member can protrude from the bearing surface formed by the first conveyor belt and the second conveyor belt. When the device body 200 comes into contact with the blocking member, the blocking member can block the device body 200, so that the device body 200 is stationary, so that the gripping mechanism 50 can grip and place it in the positioning part.

[0078] After the pre-calibration of the bimetallic strip 210 in the device body 200 on the positioning section is completed, the gripping mechanism 50 can grip the device body 200 on the positioning section and place it back to the conveying mechanism 40. Then, the blocking member can slide along the third direction Z, so that the blocking member is recessed into the bearing surface formed by the first conveyor belt and the second conveyor belt. At this time, the blocking member can release the device body 200, so that the conveying mechanism 40 can transport the device body 200 with the adjusted bimetallic strip 210 away.

[0079] The gripping mechanism 50 can be a robotic arm or a vacuum adsorption device, etc. The specific type and structure of the gripping mechanism 50 are not specifically limited in this embodiment.

[0080] In this embodiment, the first direction X, the second direction Y, and the third direction Z can be mutually perpendicular directions. In this way, the first direction X, the second direction Y, and the third direction Z can form a spatial rectangular coordinate system. Each component in the dual-gold adjustment device 100 can determine its relative position based on this spatial rectangular coordinate system, and the arrangement of each component is relatively reasonable.

[0081] Of course, the first direction X, the second direction Y, and the third direction Z can also have other relative relationships. For example, the angle between the first direction X and the second direction Y can be other values, such as 60°, 87°, or 95°, etc. Or the angle between the first direction X and the third direction Z can be other values, such as 60°, 87°, or 95°, etc.

[0082] In some embodiments, such as Figure 1 , Figure 2 and Figure 4 As shown, the dual-gold adjustment device 100 also includes a cabinet 60, which has an installation space inside. The positioning structure 10, the servo locking mechanism 20, and the vision inspection mechanism 30 are all located in the installation space.

[0083] In this way, the positioning structure 10, the servo locking mechanism 20, and the vision inspection mechanism 30 can all be supported and enclosed by the cabinet 60. That is, the positioning structure 10, the servo locking mechanism 20, and the vision inspection mechanism 30 can be located in a relatively enclosed installation space. Thus, the cabinet 60 can serve as the housing of the dual-metal adjustment device 100, providing protection for the internal positioning structure 10, servo locking mechanism 20, and vision inspection mechanism 30.

[0084] In the case where the dual-metal adjustment device 100 also includes a conveying mechanism 40 and a gripping mechanism 50, portions of the gripping mechanism 50 and the conveying mechanism 40 can also be located within the installation space. In this case, the cabinet 60 can also isolate the noise generated by the positioning structure 10, the servo locking mechanism 20, the vision inspection mechanism 30, the conveying mechanism 40, and the gripping mechanism 50, and ensure the safety of the dual-metal adjustment device 100 during operation.

[0085] Additionally, in this application, such as Figure 4 As shown, the positioning structure 10 may include a support plate, on which a fixed limiting plate and a slidable positioning plate are provided. The support plate is used to support the device body 200, and the positioning plate is used to push against the device body 200 so that the device body 200 abuts against the limiting plate and the positioning plate respectively.

[0086] With the above settings, when the device body 200 is placed in the positioning structure 10, the device body 200 can be supported on the support plate, and then the positioning plate can slide and push against the device body 200, so that the device body 200 can be limited by the limiting plate and the positioning plate respectively, so that the position of the device body 200 on the support plate is fixed, thereby improving the reliability of the positioning of the support plate.

[0087] In addition, the bimetallic adjustment device 100 may also include a display device connected to the controller. The display device can display relevant information of the device body 200 that is pre-calibrating the bimetallic strip 210 in real time, such as the first dimension, the second dimension, etc., so that the operator can observe the working status of the bimetallic adjustment device 100 in real time.

[0088] Secondly, this application also proposes a double-gold adjustment method, which is applied to any of the double-gold adjustment devices 100 in the above embodiments. For example... Figure 5 As shown, the dual-gold adjustment method includes the following steps.

[0089] Step 501: Position the main body of the device.

[0090] In this step, the device body 200 can be positioned by the positioning structure 10 so that the device body 200 can be set relatively stably in the bimetallic adjustment device 100, providing conditions for the subsequent pre-calibration of the bimetallic strip 210 and reducing the possibility of unreliable adjustment of the fastener 230 due to the non-fixed position of the device body 200.

[0091] Specifically, the gripping mechanism 50 can place the device body 200 in the positioning part and push the device body 200 against the positioning plate in the positioning part, so that the device body 200 has an accurate position on the positioning structure 10.

[0092] Step 502: Detect the first dimension between the bimetallic strip and the linkage piece in the device body, and the second dimension of the fastener.

[0093] The first and second dimensions obtained in this step can provide a basis for adjusting the fastener 230, so as to transform the original "trial and error" adjustment that relied on human experience into an accurate adjustment based on the measurement value, and reduce the dispersion caused by the lack of accurate basis when adjusting the screw.

[0094] The first dimension is the distance between the bimetallic strip 210 and the linkage strip 220, which directly affects the sensitivity of the bimetallic strip 210 in triggering the linkage strip 220. The second dimension of the fastener 230 directly affects the adjustable range of the feed depth of the fastener 230.

[0095] Specifically, this step can be performed by the vision inspection mechanism 30. For example, the vision inspection mechanism 30 can first acquire an image of the device body 200 on one side of the bimetallic strip 210 and the linkage strip 220, and then use the image to calculate the first dimension and the second dimension, thus achieving non-contact measurement. At this time, the vision inspection mechanism 30 can embed relevant algorithms to complete the conversion and measurement process.

[0096] Alternatively, after the visual inspection mechanism 30 acquires an image of the device body 200 on one side of the bimetallic strip 210 and the linkage strip 220, the image can be transmitted to the controller, which performs calculations and analysis based on the image to obtain the first dimension and the second dimension. This application does not specifically limit the embodiments in this regard.

[0097] The method for detecting the second dimension of the fastener 230 in step 502 can be as follows: Adjust the feed depth of the fastener 230 on the bimetallic strip 210 to bring the fastener 230 to the mechanical limit. Then, measure the distance from the side of the bimetallic strip 210 facing the linkage plate 220 to the side of the fastener 230 facing the linkage plate 220 as the second dimension.

[0098] The fastener 230 includes a head and a rod connected in sequence, with the rod passing through a bimetallic strip 210. The servo locking mechanism 20 is used to adjust the fastener 230 by means of the side of the head facing away from the rod. When the fastener 230 is at its mechanical limit, the side of the head facing the rod abuts against the bimetallic strip 210.

[0099] That is, in this embodiment, the fastener 230 can be tightened first, causing it to abut against the bimetallic strip 210, and then the second dimension can be measured. This reduces the interference of the initial position of the fastener 230 on the measurement process. Figure 3 , Figure 3The diagram shows the position of fastener 230 when it is in the mechanical stop position. H1, marked in the diagram, represents the first dimension, and H2 represents the second dimension.

[0100] It is understandable that the positions of the fasteners 230 on the bimetallic strip 210 may vary for the device body 200 before the bimetallic strip 210 has been pre-calibrated.

[0101] For example, the bimetallic strip 210 may be fitted onto the middle portion of the shank of the fastener 230. Alternatively, the bimetallic strip 210 may be fitted onto the end of the shank of the fastener 230, with the fastener 230 extending completely from the bimetallic strip 210. Or, the bimetallic strip 210 may be fitted onto the end of the shank of the fastener 230, with the fastener 230 not extending completely from the bimetallic strip 210.

[0102] The different positions of the fastener 230 may affect the measurement of the second dimension, especially when the fastener 230 does not extend completely from the bimetallic strip 210. It is not easy to capture the specific position of the fastener 230 away from the servo locking mechanism 20, and thus it is not easy to obtain the second dimension accurately.

[0103] The setting in this application of first screwing the fastener 230 to the mechanical limit and then detecting the second dimension can greatly reduce the interference of the initial position of the fastener 230 on the detection process, which is conducive to obtaining an accurate second dimension and thus improving the accuracy of adjusting the fastener 230.

[0104] Step 503: Adjust the feed depth of the fastener on the bimetallic strip according to the first dimension and the second dimension to achieve pre-calibration of the bimetallic strip on the device body.

[0105] In this step, calculations can be performed based on the first and second dimensions detected in step 502, and then the feed depth of the fastener 230 on the bimetallic strip 210 can be adjusted according to the calculation results to complete the pre-calibration of the bimetallic strip 210.

[0106] Specifically, the possible methods for adjusting the feed depth of the fastener 230 on the bimetallic strip 210 based on the first and second dimensions are as follows: Sub-step 5031: Identify the model information of the main body of the device and determine the adjustment coefficient.

[0107] The model information may include any one or more of the following: serial number, number of phases, rated current, and breaking capacity. For device bodies 200 with the same model information, their adjustment coefficients are consistent and can be directly read from the controller.

[0108] In this step, the model information of the device body 200 can be obtained by the vision inspection mechanism 30. For example, the vision inspection mechanism 30 can read the nameplate data and the number of bimetallic strips 210 on the device body 200 based on the acquired image to obtain the model information, and then transmit the model information to the control unit.

[0109] Furthermore, in the production line, adjustments are generally made to the bimetallic strips 210 of the same type of device body 200 at the same time. The model information can also be pre-entered by the operator before the bimetallic adjustment device 100 is turned on, and then the control unit can directly read it. This application embodiment does not specifically limit the specific method for identifying the model information.

[0110] Sub-step 5032: Based on the adjustment coefficient, the first dimension, and the second dimension, obtain the back-off depth.

[0111] In this step, the controller can calculate based on the adjustment coefficient, the first dimension, and the second dimension to determine the position difference between the fastener 230 in its current state (in the mechanical limit state) and the fastener 230 after adjustment based on the adjustment coefficient, thus obtaining the retraction depth.

[0112] Sub-step 5033: Back the fastener based on the back-off depth.

[0113] At this time, the controller can send a signal to the servo locking mechanism 20, causing the servo locking mechanism 20 to operate and rotate the fastener 230 in the opposite direction, so that the fastener 230 retracts. At this time, the fastener 230 can move to the side away from the linkage plate 220 until it reaches the retraction depth, completing the adjustment of the fastener 230.

[0114] It is understandable that when it is necessary to pre-calibrate multiple bimetallic strips 210 on the device body 200, the methods proposed in steps 502 and 503 can be performed on the multiple bimetallic strips 210 respectively, thereby realizing the adjustment of the multiple bimetallic strips 210.

[0115] That is, when the multiple bimetallic strips 210 on the device body 200 are pre-calibrated using the bimetallic adjustment method, the servo locking mechanism 20 can sequentially adjust the feed depth of the fasteners 230 of the multiple bimetallic strips 210. This adjustment method makes it easy to ensure that the distance between the end of the multiple fasteners 230 facing the linkage plate 220 and the linkage plate 220 is equal.

[0116] Thus, when the bimetallic strip adjustment method of this application pre-calibrates multiple bimetallic strips 210 on the same device body 200, it can also make the distance between the fasteners 230 on each bimetallic strip 210 and the linkage strip 220 more consistent, which can make the thermal trip characteristic curves of each phase more coincident, avoid any phase acting prematurely or lagging behind, thereby achieving synchronous tripping under overload, reducing the risk of single-phase overheating and equipment damage.

[0117] In this embodiment, the adjustment coefficient is determined specifically through the output of the learning model. For example, the training method of the learning model is explained below. For ease of description, the distance between the fastener 230 and the linkage piece 220 after adjustment is referred to as the third dimension.

[0118] Obtain multiple sets of historical first-size samples, historical second-size samples, and corresponding historical third-size labels.

[0119] Multiple sets of historical first-size samples, historical second-size samples, and corresponding historical third-size labels are input into the initial learning model. At this point, the initial learning model can learn the mapping relationship between the historical first-size samples, historical second-size samples, and corresponding historical third-size labels based on random forests, decision trees, multi-layer fully connected neural networks, etc., and obtain the global parameter K.

[0120] Then, take the first iteration size sample and the second iteration size sample and input them into the initial model to obtain the predicted third size. Based on the predicted third size and the label of the third iteration size, calculate the loss value of the initial model.

[0121] By adjusting the model parameters and global parameter K of the initial model based on the initial model loss value, the learned model can be obtained. The adjusted global parameter K is the aforementioned adjustment coefficient.

[0122] Among them, the historical first-size sample, historical second-size sample, historical third-size label, iterative first-size sample, iterative second-size sample, and iterative third-size label are only used to distinguish samples or labels at different stages, and are all obtained from the historical process of adjusting fastener 230.

[0123] In the dual-gold adjustment device 100 proposed in this application, the learning model can be embedded in the controller, or the controller can call the learning model through an interface or network when it is working.

[0124] Thus, after identifying the model information of the device body 200, the adjustment parameters corresponding to the model information can be output through the learning model, and the corresponding third dimension can be output for different first and second dimensions. Then, the controller can calculate the back-off depth based on the third and second dimensions, and control the servo locking mechanism 20 to work accordingly to complete the adjustment of the fastener 230.

[0125] Alternatively, the learning model can output only the adjustment parameters corresponding to the model information, and the controller can calculate the back-off depth based on the adjustment parameters, the third dimension, and the second dimension, which can also yield the back-off depth.

[0126] Of course, in addition to outputting adjustment coefficients through the learning model, manual intervention is also possible. That is, staff can directly input adjustment coefficients, and the learning model can then verify the reasonableness of the input adjustment coefficients. Once the reasonableness is confirmed, the data is transmitted to the controller for further calculations.

[0127] In some embodiments, such as Figure 3 As shown, a locking member 240 may also be fitted onto the fastener 230, and the locking member 240 is disposed between the head of the fastener 230 and the bimetallic strip 210. In this way, the fastener 230 can be locked by the locking member 240, reducing the possibility of the fastener 230 moving relative to the bimetallic strip 210.

[0128] When a locking element 240 is provided on the fastener, after adjusting the feed depth of the fastener 230 on the bimetallic strip 210, the bimetallic adjustment method may further include: screwing the locking element 240 on the fastener 230 until the locking element 240 abuts against the bimetallic strip 210.

[0129] That is, after retracting the fastener 230 and adjusting the feed depth of the fastener 230 on the bimetallic strip 210, the fastener 230 can be screwed by the servo locking mechanism 20 so that the locking member 240 abuts against the bimetallic strip 210.

[0130] At this time, the locking member 240 can limit the fastener 230, reducing the possibility that the fastener 230 may be affected by collisions or other factors that cause changes in its feed depth on the bimetallic strip 210, thus affecting the normal disengagement of the device body 200.

[0131] When the fastener 230 is equipped with a locking element 240, the position of the locking element 240 also changes relative to the fastener 230 during step 502.

[0132] Specifically, before the fastener 230 is adjusted, the position of the locking member 240 on the fastener 230 is related to the assembly of the device body 200, and the position of the locking member is uncertain. When the servo locking mechanism 20 tightens the fastener 230, the fastener 230 can first drive the locking member 240 to move synchronously until the locking member 240 abuts against the bimetallic strip 210.

[0133] Then, as the servo locking mechanism 20 continues to rotate, the relative position between the fastener 230 and the locking member 240 also changes until the fastener 230 and the locking member 240 come into contact. At this point, the fastener 230 can be considered to have reached its mechanical limit. In other words, the mechanical limit is achieved by the cooperation of the locking member 240 and the bimetallic strip 210.

[0134] Furthermore, for device bodies 200 with different model information, there is a standardized preset tripping time, which is a forced time window determined based on international or national standards and cable thermal limits and load statistics. After identifying the model information, the preset tripping time can be obtained from a database or other sources based on the model information.

[0135] The preset tripping time can be any value in the forced time window corresponding to the device body 200, or any range in the forced time window. This application embodiment does not make specific limitations here.

[0136] For the device body 200 that has been pre-calibrated with bimetallic strip 210, a tripping test can also be performed on the device body 200 to determine whether the device body 200 is qualified and whether there is an early tripping or late tripping phenomenon.

[0137] The learning model can also add early jump, late jump, or qualified category labels. The category labels can serve as supervision signals, enabling the model to learn from the data corresponding to the early jump label, the data corresponding to the late jump sample, and the data corresponding to the qualified sample, thereby achieving accurate mapping and targeted correction driven by the category.

[0138] In some embodiments, such as Figure 6 As shown, the dual-gold adjustment method may also include the following steps.

[0139] Step 601: Position the main body of the device.

[0140] Step 602: Detect the first dimension between the bimetallic strip and the linkage piece in the device body, and the second dimension of the fastener.

[0141] Step 603: Adjust the feed depth of the fastener on the bimetallic strip according to the first dimension and the second dimension.

[0142] Steps 601 to 603 can be referred to the foregoing description of steps 501 to 503, and will not be repeated here in the embodiments of this application.

[0143] Step 604: Obtain the preset tripping time corresponding to the main body of the device.

[0144] In this step, the preset tripping time can be obtained directly from the model information obtained in sub-step 5021, or it can be input by the staff. This application embodiment does not specifically limit this.

[0145] Step 605: Power on the main body of the device with the bimetallic strip installed and perform a tripping test to obtain the actual tripping time.

[0146] In the steps, a simulated current can be applied to the device body 200 after the fastener 230 has been adjusted by the servo locking mechanism 20 to perform a trip test on the device body 200 and record the actual trip time.

[0147] The dual-metal adjustment device 100 may include a calibration table that is communicatively connected to the controller. The process of powering on the device body 200 to perform a tripping test in this step can be completed at the calibration table. Alternatively, an additional calibration device may be provided, and this calibration device may be communicatively connected to the controller. In this case, the device body 200 can also be powered on to perform a tripping test.

[0148] Step 606: Compare the preset tripping time with the actual tripping time to obtain the comparison result.

[0149] The calibration bench or calibration equipment can feed back the actual tripping time to the controller. The controller can compare the preset tripping time with the actual tripping time and determine whether the main body of the device 200 has any unqualified issues such as early tripping or late tripping based on the comparison results.

[0150] Step 607: If the comparison result indicates a deviation between the actual tripping time and the preset tripping time, the adjustment coefficient is corrected based on the comparison result.

[0151] If the comparison results indicate a deviation between the actual tripping time and the preset tripping time, it means that the actual tripping time and the preset tripping time are inconsistent, and the device body 200 trips either too early or too late. This can be attributed to a deviation in the adjustment coefficient, resulting in an unreasonable back-off depth.

[0152] At this point, the controller can input the early or late jump situation into the learning model, and then the learning model can correct the adjustment coefficient accordingly, so that the servo locking mechanism 20 can more accurately adjust the bimetallic strip 210 of the next device body 200.

[0153] It is understandable that the early or late tripping of a single device body 200 can be affected by other factors, such as abnormal contact resistance or abnormal current waveform of the device body 200. When the actual tripping time of a single device body 200 is abnormal due to other factors, using this data to adjust the adjustment coefficient may introduce the risk of over-adjustment and misjudgment.

[0154] Therefore, in practical applications, the data obtained from each tripping experiment can be saved to a database. Once the accumulated data in the database reaches a set threshold, the adjustment coefficient can be corrected.

[0155] The dual-gold adjustment method proposed in this application can automatically adjust the fastener 230, realize intelligent adjustment of adjustment parameters and traceability of the adjustment process, and can replace the traditional manual adjustment of the fastener 230 based on experience, which can greatly improve the adjustment accuracy and efficiency.

[0156] Furthermore, during the adjustment of fastener 230, each adjustment control can be monitored in real time, and the first and second dimensions detected during each adjustment, along with the corresponding adjustment parameters, can be recorded and trend charts plotted. This provides a more intuitive view of the historical trends of relevant parameters, facilitating analysis by staff or the identification of abnormal discrete data.

[0157] Finally, it should be noted that the above embodiments are merely specific implementations of this application, but the scope of protection of this application is not limited thereto. Any changes or substitutions within the technical scope disclosed in this application should be covered within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A dual-metal adjustment device, characterized in that, For adjusting the fastener along a first direction to pre-calibrate the bimetallic strip to the device body, the bimetallic adjustment device includes: The positioning structure is provided with a positioning part for positioning the main body of the device; A servo-locking mechanism is disposed on one side of the positioning structure in the first direction; A visual inspection mechanism, opposite to the positioning part, is used to detect the first dimension between the bimetallic strip and the linkage piece in the device body, and the second dimension of the fastener; The control unit is communicatively connected to the vision inspection mechanism and the servo fastening mechanism. The vision inspection mechanism is used to transmit the first dimension and the second dimension to the control unit. The control unit can control the servo fastening mechanism to work based on the first dimension and the second dimension to adjust the feed depth of the fastener on the bimetallic strip.

2. The dual-gold adjustment device according to claim 1, characterized in that, The dual-gold adjustment device also has a second direction, which intersects with the first direction; The servo-locking mechanism is slidably disposed along the second direction so that the servo-locking mechanism can adjust the fastener at different positions.

3. The dual-gold adjustment device according to claim 2, characterized in that, The dual-gold adjustment device also includes a conveying mechanism and a gripping mechanism; The conveying mechanism is used to transport the device body. The positioning structure is spaced apart from the conveying mechanism. The gripping mechanism can move between the conveying mechanism and the positioning structure to grip the device body on the conveying mechanism and place the device body in the positioning part.

4. The dual-gold adjustment device according to claim 2, characterized in that, The dual-gold adjustment device also includes a cabinet, which has an installation space inside. The positioning structure, the servo locking mechanism, and the vision inspection mechanism are all located in the installation space.

5. A dual-gold adjustment method, characterized in that, The dual-gold adjustment method is applied to the dual-gold adjustment device according to any one of claims 1-4, and the dual-gold adjustment method includes: Position the main body of the device; The first dimension between the bimetallic strip and the linkage piece in the device body, and the second dimension of the fastener are detected; The feed depth of the fastener on the bimetallic strip is adjusted according to the first and second dimensions to achieve pre-calibration of the bimetallic strip on the device body.

6. The dual-gold adjustment method according to claim 5, characterized in that, Detecting the second dimension of the fastener includes: Adjust the feed depth of the fastener on the bimetallic strip to bring the fastener to a mechanical limit; The distance between the side of the bimetallic strip facing the linkage piece and the side of the fastener facing the linkage piece is measured as a second dimension; The fastener includes a head and a rod connected in sequence, the rod passing through the bimetallic strip, and the servo locking mechanism is used to adjust the fastener by means of the side of the head away from the rod. When the fastener is mechanically stopped, the bimetallic strip limits the head to one side facing the rod.

7. The dual-gold adjustment method according to claim 5, characterized in that, Adjusting the feed depth of the fastener on the bimetallic strip according to the first dimension and the second dimension includes: Identify the model information of the device body and determine the adjustment coefficient; The back-off depth is obtained based on the adjustment coefficient, the first dimension, and the second dimension; The fastener is retracted based on the retraction depth.

8. The dual-gold adjustment method according to claim 5, characterized in that, The servo-locking mechanism can also screw the locking element on the fastener. After adjusting the feed depth of the fastener on the bimetallic strip according to the first dimension and the second dimension, the method further includes: Tighten the locking element on the fastener until the locking element abuts against the bimetallic strip; The locking element is sleeved on the fastener and located between the head of the fastener and the bimetallic strip.

9. The dual-gold adjustment method according to claim 5, characterized in that, After pre-calibrating the bimetallic strip on the device body, the method further includes: Obtain the preset tripping time corresponding to the main body of the device; A tripping test is performed on the main body of the device with the bimetallic strip installed to obtain the actual tripping time; The preset tripping time is compared with the actual tripping time to obtain the comparison result; If the comparison result indicates a deviation between the actual tripping time and the preset tripping time, the adjustment coefficient is corrected based on the comparison result.

10. The dual-gold adjustment method according to claim 7, characterized in that, When the bimetallic strips on the device body are pre-calibrated using the bimetallic adjustment method, the servo locking mechanism sequentially adjusts the feed depth of the fasteners of the bimetallic strips so that the distance between the end of the fasteners facing the linkage piece and the linkage piece is equal.

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