Automatic resistor disc matching equipment

Abstract

According to the automatic matching equipment for the resistor discs, the resistor discs sequentially pass through the feeding unit, the conveying unit, the recognition unit and the discharging unit, the resistor discs are moved to the conveying unit through the feeding unit, and before the resistor discs are conveyed to the material taking position of the discharging unit through the conveying unit, the resistor discs need to be recognized and matched through the recognition unit; after matching is completed, the discharging unit moves the resistor discs from the conveying unit to the designated storage position, finally automatic matching of the resistor discs is achieved, and the whole resistor disc automatic matching equipment can reasonably use the resistor discs with large performance differences.

Description

Technical Field

[0001] This utility model belongs to the field of resistor assembly technology, and specifically relates to an automatic resistor assembly device. Background Technology

[0002] Resistor element assembly is a crucial step in surge arrester manufacturing, involving combining multiple resistor elements according to specific rules to achieve the desired electrical performance. Resistor element assembly is a complex process requiring precise control and a high degree of automation. With technological advancements, automated assembly systems and devices are gradually replacing traditional manual assembly methods, which not only improves production efficiency but also reduces labor costs and quality risks.

[0003] However, in the current resistor assembly work, there are still some unreasonable assembly and relatively large errors. It is not possible to fully utilize all resistors with different deviations. The fault tolerance rate of the assembly task is not high, and the completed resistor assembly also has a large deviation, which has a certain impact on the working status and performance of the surge arrester.

[0004] Especially for zinc oxide resistance elements, which are the core components of metal oxide surge arresters, their performance directly determines the arrester's operational performance. They are ceramic bodies formed by granulating zinc oxide as the main raw material with the addition of a small amount of metal oxides, followed by high-temperature baking. They have a large unit current capacity, four to four and a half times that of silicon carbide. Furthermore, zinc oxide resistance elements possess excellent non-volt-ampere characteristics. When assembling surge arresters, zinc oxide resistance elements need to be grouped according to the specified residual voltage and one milliampere reference voltage value, and the entire group is installed inside the arrester with gaskets to form the core of the arrester. This includes tank-type surge arresters and composite-insulated surge arresters, all of which use grouped zinc oxide resistance element columns. Surge arresters are generally connected in parallel at the front end of the protected equipment. When the applied voltage exceeds the arrester's rated voltage, the arrester discharges first, limiting the development of the overvoltage and thus protecting other electrical equipment from breakdown. In power systems, they play a crucial role in lightning protection, overvoltage protection, and protection against switching current surges. Therefore, the role of the zinc oxide resistor column, which is composed of a set of matched zinc oxide resistor elements inside the surge arrester structure, is particularly crucial.

[0005] Therefore, ensuring the rationality of resistor assembly is a problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0006] The purpose of this invention is to provide an automatic resistor assembly device that can ensure the rationality of resistor assembly.

[0007] To solve the above-mentioned technical problems, this utility model provides an automatic resistor sheet assembly device, including a feeding unit, a conveying unit, an identification unit, and a discharging unit;

[0008] The conveying unit is disposed between the loading unit and the unloading unit. The loading unit is used to move the resistor sheet onto the conveying unit. The identification unit is disposed above the conveying unit and is used to identify and group the resistor sheets on the conveying unit. The unloading unit is used to place the grouped resistor sheets into a designated storage location.

[0009] Optionally, in the above-mentioned automatic resistor assembly equipment, the feeding unit includes a feeding robot and a feeding robot support. The fixed end of the feeding robot is installed on the ground through the feeding robot support, and the movable end of the feeding robot is provided with a feeding clamp for holding the resistor and a visual positioning camera for identifying the gripping position.

[0010] Optionally, in the above-mentioned automatic resistor assembly equipment, the feeding unit further includes a feeding protection device and / or a feeding tray support;

[0011] The loading protection device surrounds the outside of the loading robot and forms the working space of the loading unit. The loading protection device is equipped with a safety door.

[0012] The loading tray support is used to support the loading tray containing the resistor sheets.

[0013] Optionally, in the above-mentioned automatic resistor assembly equipment, the conveying unit includes a conveyor belt and a conveyor belt support for supporting the conveyor belt.

[0014] Optionally, the above-mentioned automatic resistor assembly equipment also includes a central control unit;

[0015] The identification unit includes a linear module and a barcode scanner. The fixed end of the linear module is located above the conveying unit and arranged along the conveying direction perpendicular to the conveying unit. The movable end of the linear module is connected to the barcode scanner, which is used to scan and read the resistive sheet data.

[0016] The main control unit is electrically or signal-connected to the barcode scanner and the unloading unit, respectively, and is used to acquire all resistor information of the barcode scanner and filter them according to preset standards to achieve resistor grouping.

[0017] Optionally, in the above-mentioned automatic resistor assembly equipment, the identification unit further includes a limiter plate, which is provided with a limiting groove for limiting the placement position of the resistor on the conveying unit.

[0018] Optionally, in the above-mentioned automatic resistor assembly equipment, the identification unit further includes a limiter bracket, which includes a high-position bracket and a low-position bracket arranged adjacent to each other above the conveying unit. The linear module is arranged on the high-position bracket, and the limiter plate is arranged on the low-position bracket.

[0019] Optionally, in the above-mentioned automatic resistor assembly equipment, the unloading unit includes an unloading robot and an unloading robot support. The fixed end of the unloading robot is mounted on the ground through the unloading robot support, and the movable end of the unloading robot is provided with an unloading clamp for holding the resistors.

[0020] Optionally, in the above-mentioned automatic resistor assembly equipment, the unloading unit further includes an unloading tray support for supporting the unloading tray storing the resistors;

[0021] And / or, the unloading unit further includes an unloading protection device, which surrounds the outside of the unloading robot and forms the working space of the unloading unit, and the unloading protection device is equipped with a safety door.

[0022] Optionally, in the above-mentioned automatic resistor assembly equipment, the unloading unit further includes a buffer support, the upper surface of which is connected to the outlet end of the conveying unit for placing resistors that have not yet been assembled.

[0023] This utility model provides an automatic resistor assembly device, the advantages of which are:

[0024] The resistor sheets sequentially pass through a feeding unit, a conveying unit, an identification unit, and an unloading unit. The feeding unit moves the resistor sheets onto the conveying unit. Before the conveying unit transports the resistor sheets to the unloading unit's pick-up position, they are identified and grouped by the identification unit. After grouping, the unloading unit moves the resistor sheets from the conveying unit to a designated storage location, ultimately achieving automatic resistor sheet grouping. This entire automatic resistor sheet grouping equipment can rationally utilize resistor sheets with significant performance differences, achieving automated and minimally manpower-intensive grouping. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0026] Figure 1 This is a schematic diagram of the structure of an automatic resistor assembly device provided in an embodiment of the present utility model;

[0027] Figure 2 This is a schematic diagram of the structure of the feeding unit provided in an embodiment of the present utility model;

[0028] Figure 3 This is a schematic diagram of the structure of the conveying unit and the identification unit provided in the embodiment of this utility model;

[0029] Figure 4 A schematic diagram of the structure of the identification unit provided in an embodiment of this utility model;

[0030] Figure 5 This is a schematic diagram of the structure of the feeding unit provided in an embodiment of the present utility model;

[0031] Figure 6 This is a schematic diagram of the structure of the unloading robot provided in an embodiment of the present utility model.

[0032] In the image above:

[0033] 101-Feeding robot; 1011-Feeding fixture; 1012-Visual positioning camera; 102-Feeding robot support; 103-Feeding pallet support; 104-Feeding protection device;

[0034] 201 - Conveyor belt; 202 - Conveyor belt support;

[0035] 301 - Linear module; 302 - Barcode scanner; 303 - Limiter plate; 304 - Limiter bracket;

[0036] 401-Unloading robot; 4011-Clamping bracket; 4012-Unloading clamp; 402-Unloading robot bracket; 403-Unloading pallet bracket; 404-Buffer zone bracket; 405-Unloading protection device. Detailed Implementation

[0037] 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.

[0038] The core of this invention is to provide an automatic resistor assembly device that can rationalize the assembly of resistors with different deviations.

[0039] To enable those skilled in the art to better understand the technical solutions provided by this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0040] For details, please refer to Figures 1-6The present invention provides an automatic resistor assembly device, comprising: a feeding unit, a conveying unit, an identification unit, and a discharging unit.

[0041] The feeding unit is used to move the resistor sheet onto the conveying unit.

[0042] The conveying unit is located between the loading unit and the unloading unit, and is used to convey the resistor sheet to the vicinity of the unloading unit.

[0043] The identification unit is located above the conveying unit and is used to identify and group the resistors on the conveying unit. In particular, the identification unit can be located at the front end of the conveying unit, and the feeding unit picks up the resistors to be grouped from the initial position and moves them to the entrance of the conveying unit.

[0044] The unloading unit is used to place the assembled resistors from the conveying unit into the designated positions.

[0045] The automatic resistor grouping equipment provided in this solution involves resistors passing through a feeding unit, a conveying unit, an identification unit, and an unloading unit in sequence. The feeding unit moves the resistors onto the conveying unit. Before the conveying unit transports the resistors to the unloading unit's pick-up position, they need to be identified and grouped by the identification unit. After grouping, the unloading unit moves the resistors from the conveying unit to the designated storage position, thus achieving automatic resistor grouping.

[0046] The entire automatic resistor matching equipment can make reasonable use of resistors with large performance differences, thereby optimizing the matching and maximizing their utilization.

[0047] In a specific embodiment, the feeding unit includes a feeding robot 101 and a feeding robot support 102. The fixed end of the feeding robot 101 is mounted on the ground through the feeding robot support 102. The movable end of the feeding robot 101 is provided with a feeding fixture 1011 for holding the resistor sheet and a visual positioning camera 1012 for identifying the gripping position.

[0048] The loading robot 101 can be a robotic arm or a more complex industrial robot. The loading robot 101 works in conjunction with the loading fixture 1011 to grasp the resistor sheet. The loading fixture 1011 can be a gripper (including a gripper cylinder) or a vacuum suction cup / vacuum suction gripping device.

[0049] During the grasping process, the visual positioning camera 1012 first takes a picture to obtain the initial position of the resistor sheet (i.e., the position on the loading tray bracket 103), grasps it according to the picture position, and then places the resistor sheet in the conveying unit in sequence to complete the loading.

[0050] Furthermore, the feeding unit also includes a feeding protection device 104 and / or a feeding pallet support 103.

[0051] The loading protection device 104 surrounds the outside of the loading robot 101 and forms the working space of the loading unit. The loading protection device 104 is equipped with a safety door.

[0052] The loading tray bracket 103 is used to support the loading tray containing the resistor sheets.

[0053] In a specific embodiment, the conveying unit includes a conveyor belt 201 and a conveyor belt support 202 for supporting the conveyor belt 201. The conveyor belt 201 can convey resistor sheets; one resistor sheet can be placed on the conveyor belt 201 in its width direction, or a row of resistor sheets can be placed simultaneously, and the specific arrangement can be adapted to the actual application. Furthermore, the conveyor belt is driven by a stepper motor.

[0054] This solution may also include a general control system. Correspondingly, the identification unit includes a linear module 301 and a barcode scanner 302. The fixed end of the linear module 301 is positioned above the conveying unit and arranged along a direction perpendicular to the conveying direction of the conveying unit. The movable end of the linear module 301 is connected to the barcode scanner 302, which is used to scan and read the resistive element data. The linear module 301 drives the barcode scanner 302 to move in one direction, perpendicular to the conveying direction of the conveying unit, thus enabling the barcode scanner 302 to sequentially identify multiple resistive elements along the width of the conveying unit.

[0055] The main control unit has a grouping data calculation function, including a host computer and grouping program software installed in the host computer, which contains the host computer grouping program. The main control unit is electrically or signal-connected to the barcode scanner 302 and the unloading robot, respectively. It is used to acquire all resistor information from the barcode scanner 302, filter them according to preset standards, and send the spatial position of the grouped resistors to the unloading unit to wait for unloading, thus realizing the grouping of resistors.

[0056] Specifically, the aforementioned preset standard can be two constraints: a 1mA reference voltage value and a lightning impulse residual voltage value.

[0057] The host computer's grouping program performs data calculations based on two constraints: the residual voltage value of the lightning impulse from the resistor element and the 1mA reference voltage value. The resistor elements participating in the grouping are considered as elements A1, A2, ..., An, in the order they were read and decoded. The residual voltage value of the lightning impulse is considered as the characteristic value α of each element, and the 1mA reference voltage value is considered as the characteristic value β of each element. The characteristic values ​​α and β of each element correspond to the element itself and move as the elements are sorted. The characteristic values ​​β of the elements are sorted from largest to smallest using insertion sort, and the characteristic values ​​α belonging to the same element move accordingly, forming a dynamically updated element array. The sorted feature value β should satisfy a normal distribution in terms of value if and only if N1≤β1+β2+…+βn≤N2 (N1 and N2 represent the lower limit and upper limit of the 1mA reference voltage range of different types of metal oxide surge arresters, respectively, and n represents the number of resistors required for a single surge arrester), α1+α2+…+αn≤N3 (N3 represents the lightning impulse residual voltage value of different types of metal oxide surge arresters, and n represents the number of resistors required for a single surge arrester). The resistors corresponding to elements A1, A2, …, and An complete the grouping data calculation. The grouping program software sends the spatial position of the grouped resistors to the unloading unit (i.e., the unloading robot) through the host computer, waiting for unloading.

[0058] In actual operation, after the resistor sheet is placed into the conveying unit, the linear module 301 can drive the barcode scanner 302 to scan and read the resistor sheet data. The main control unit (i.e., the host computer) will decode and collect all the data of the resistor sheet and filter them through two constraints: 1mA reference voltage value and lightning impulse residual voltage value.

[0059] When unmatched resistor pieces arrive at the end of the conveyor unit, the unloading robot 401 places them on the buffer support 404. They continue to wait and participate in the matching process until successful matching occurs. The unloading robot 401 then places the successfully matched resistor pieces from the buffer support 404 onto the unloading tray support 403. If unmatching continues, the resistor pieces will remain unmatched, or the buffer will become full. In this case, the main control unit will issue an equipment alarm signal and perform buffer clearing.

[0060] To facilitate observation of whether the resistive element is in the recognition state, indicator lights can also be installed on the barcode scanner 302 or the recognition unit.

[0061] Based on the above specific embodiments, such as Figure 4 As shown, the identification unit also includes a limiter plate 303, which has a limiting groove for limiting the placement position of the resistor sheet from the feeding unit on the conveying unit. The number of limiting grooves can be one or more. The limiter plate 303 can be installed at the inlet end of the conveying unit.

[0062] The identification unit also includes a limiter bracket 304, which includes a high bracket and a low bracket arranged adjacent to each other above the conveying unit. The linear module 301 is arranged on the high bracket, and the limiter plate 303 is arranged on the low bracket, so that the barcode scanner 302 can read the resistive sheet.

[0063] In a specific embodiment, the unloading unit includes an unloading robot 401 and an unloading robot support 402. The fixed end of the unloading robot 401 is mounted on the ground via the unloading robot support 402, and the movable end of the unloading robot 401 is provided with an unloading fixture 4012 for clamping the resistor sheet. The unloading fixture 4012 can be connected to the movable end of the unloading robot 401 via a fixture support 4011.

[0064] The unloading robot 401 can be a robotic arm or a more complex industrial robot. The unloading robot 401 works in conjunction with the unloading fixture 4012 to grasp the resistor sheet. The unloading fixture 4012 can be a gripper (including a gripper cylinder) or a vacuum suction cup / vacuum suction gripping device, etc.

[0065] Furthermore, the unloading unit also includes an unloading tray support 403 for supporting the unloading tray for storing resistor sheets.

[0066] The resistor sheet picked up by the unloading robot 401 can be stored on the unloading tray. This can be understood as the loading tray being the initial position of the resistor sheet, and the unloading tray being the designated storage location for the resistor sheet.

[0067] The unloading unit also includes an unloading protection device 405, which surrounds the outside of the unloading robot 401 and forms the working space of the unloading unit. The unloading protection device 405 is equipped with a safety door.

[0068] In addition, the main control system can be electrically or signal-connected to the safety doors in the loading protection device 104 and the unloading protection device 405, which can control the opening and closing of the safety doors in a safe state to avoid production safety accidents.

[0069] Based on the above specific embodiments, the unloading unit also includes a buffer support 404. The upper surface of the buffer support 404 is connected to the outlet end of the conveying unit and is used to place resistor sheets that have not yet been grouped (e.g., due to large reference voltage values / individual differences) or have been grouped but are waiting to be picked up by the unloading robot. Resistor sheets that have not been grouped enter the fixed buffer of the buffer support 404 and wait for subsequent data calculation by the main control unit until the constraints are met and the grouping is completed.

[0070] The unloading unit is used to place the assembled resistor sheets (from the conveyor unit and / or buffer support 404) into the designated storage location. The resistor sheets on the buffer and the conveyor belt participate in the calculation for assembly. After assembly, the unloading robot 401 picks up the assembled resistor sheets and places them into the unloading tray, thus realizing the automatic assembly and unloading of resistor sheets.

[0071] In one specific embodiment, such as Figures 1-6 As shown, the automatic resistor sheet assembly equipment provided in this application, during use, the visual positioning camera 1012 of the loading robot 101 first takes a picture to obtain the position of the resistor sheet on the loading tray, and then grabs it according to the picture position. Afterwards, the resistor sheets are placed sequentially on the conveyor belt 201 to complete the loading.

[0072] After the material is loaded, it is placed into the limit plate 303. The barcode scanner 302 driven by the linear module 301 scans and reads the data of the resistor sheet. The host computer collects all the data of the resistor sheet and filters it through two constraints: 1mA reference voltage value and lightning impulse residual voltage value.

[0073] Ungrabbed resistor pieces enter the buffer support 404. The buffer support 404 and the resistor pieces on the conveyor belt 201 work together to complete the grouping. After the grouping is completed, the unloading robot 401 picks up the grouped resistor pieces and places them into the unloading tray, thus completing the automatic grouping and unloading of the resistor pieces.

[0074] The entire automatic grouping equipment can make reasonable use of resistors with large performance differences, realizing the grouping process with less manpower and automation.

[0075] In the description of this application, it should be understood that the orientation descriptions, such as up, down, front, back, left, right, etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. 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.

[0076] In the description of this application, "multiple" means two or more. If "first" or "second" is mentioned, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated or the order of the technical features indicated.

[0077] As indicated in this application and claims, unless the context clearly indicates otherwise, the words "a," "an," "a," and / or "the" are not specifically singular and may include the plural. Generally, the terms "comprising" and "including" only indicate the inclusion of expressly identified steps and elements, which do not constitute an exclusive list, and the method or apparatus may also include other steps or elements. An element defined by the phrase "comprising an..." does not exclude the presence of other identical elements in the process, method, product, or apparatus that includes the element.

[0078] In the description of the embodiments of this application, unless otherwise stated, " / " means "or", for example, A / B can mean A or B; "and / or" in this document is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Furthermore, in the description of the embodiments of this application, "multiple" refers to two or more.

[0079] In the description of this application, unless otherwise expressly defined, terms such as "setup," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this application in conjunction with the specific content of the technical solution.

[0080] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0081] This article uses specific examples to illustrate the principles and implementation methods of this utility model. The descriptions of the above embodiments are only for the purpose of helping to understand the method and core ideas of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made to this utility model without departing from the principles of this utility model, and these improvements and modifications also fall within the protection scope of the claims of this utility model.

Claims

1. An automatic resistor assembly device, characterized in that, It includes a feeding unit, a conveying unit, an identification unit, and a discharging unit; The conveying unit is disposed between the loading unit and the unloading unit. The loading unit is used to move the resistor sheet onto the conveying unit. The identification unit is disposed above the conveying unit and is used to identify and group the resistor sheets on the conveying unit. The unloading unit is used to place the grouped resistor sheets into a designated storage location.

2. The automatic resistor assembly equipment according to claim 1, characterized in that, The loading unit includes a loading robot (101) and a loading robot support (102). The fixed end of the loading robot (101) is mounted on the ground through the loading robot support (102). The movable end of the loading robot (101) is provided with a loading clamp (1011) for holding resistor sheets and a visual positioning camera (1012) for identifying the gripping position.

3. The automatic resistor assembly equipment according to claim 2, characterized in that, The feeding unit also includes a feeding protection device (104) and / or a feeding tray support (103). The loading protection device (104) surrounds the outside of the loading robot (101) and forms the working space of the loading unit. The loading protection device (104) is equipped with a safety door. The loading tray support (103) is used to support the loading tray containing the resistor sheet.

4. The automatic resistor assembly equipment according to claim 1, characterized in that, The conveying unit includes a conveyor belt (201) and a conveyor belt support (202) for supporting the conveyor belt (201).

5. The automatic resistor assembly equipment according to claim 1, characterized in that, It also includes the main control unit; The identification unit includes a linear module (301) and a barcode scanner (302). The fixed end of the linear module (301) is located above the conveying unit and arranged along the conveying direction perpendicular to the conveying unit. The movable end of the linear module (301) is connected to the barcode scanner (302). The barcode scanner (302) is used to scan and read the resistive sheet data. The main control unit is electrically or signal-connected to the barcode scanner (302) and the unloading unit, respectively, and is used to acquire all the resistor information of the barcode scanner (302) and filter them according to preset standards to realize the grouping of resistors.

6. The automatic resistor assembly equipment according to claim 5, characterized in that, The identification unit also includes a limiter plate (303), which is provided with a limiting groove for limiting the placement position of the resistor sheet on the conveying unit.

7. The automatic resistor assembly equipment according to claim 6, characterized in that, The identification unit also includes a limiter bracket (304), which includes a high bracket and a low bracket arranged adjacent to each other above the conveying unit. The linear module (301) is arranged on the high bracket, and the limiter plate (303) is arranged on the low bracket.

8. The automatic resistor assembly equipment according to claim 1 or 5, characterized in that, The unloading unit includes an unloading robot (401) and an unloading robot support (402). The fixed end of the unloading robot (401) is mounted on the ground through the unloading robot support (402), and the movable end of the unloading robot (401) is provided with an unloading clamp (4012) for holding the resistor sheet.

9. The automatic resistor assembly equipment according to claim 8, characterized in that, The unloading unit also includes an unloading tray bracket (403) for supporting the unloading tray storing the resistor sheets; And / or, the unloading unit further includes an unloading protection device (405), which surrounds the outside of the unloading robot (401) and forms the working space of the unloading unit. The unloading protection device (405) is equipped with a safety door.

10. The automatic resistor assembly equipment according to claim 8, characterized in that, The feeding unit also includes a buffer support (404), the upper surface of which is connected to the outlet end of the conveying unit for placing resistor sheets that have not yet been assembled.

Images