Membrane assembly assembling and measuring device

Abstract

The invention belongs to the technical field of automatic assembly, and discloses a diaphragm assembly assembling and measuring device which comprises a working table. A gluing tool, a quick-change dispensing cylinder, a three-axis movement mechanism, a dispensing vision, a truss type transfer mechanism, a servo pressing rivet mechanism, a measuring lens, a riveting vision camera, a radial spin riveting unit, a riveting tool and a two-axis servo module are arranged on the working table; the quick-change dispensing barrel is arranged at the left rear part of the working table, the three-axis movement mechanism is arranged at the left front part of the working table, and the gluing tool is mounted on the three-axis movement mechanism; a part is placed on the three-axis movement mechanism to complete gluing, and the dispensing vision device is arranged on the three-axis movement mechanism. Glued parts are placed on a truss type transfer mechanism arranged on the middle front portion of the working table, a servo press riveting mechanism is arranged on the middle section of the truss type transfer mechanism, a measuring lens and a riveting visual camera are arranged beside the servo press riveting mechanism, and a radial spin riveting unit and a riveting tool are arranged on the rear section of the truss type transfer mechanism. A riveted part is arranged on the riveting tool, the bottom of the riveting tool is arranged on the two-axis servo module, and the riveting tool moves between the right front part and the right rear part of the working table top through the two-axis servo module.

Description

Technical Field

[0001] The invention belongs to the technical field of automated assembly, and relates to an assembly production device for multiple varieties of diaphragms, and in particular to an assembly and measurement device for diaphragm components. Background Art

[0002] The technical focus of high-variety, low-batch diaphragm assembly isn't high-level automation, but rather integrated application and process-based approaches to ensure consistent quality. The characteristics of low-volume, high-variety products make changeovers difficult, and assembly quality relies entirely on operator skill, particularly in the aviation industry for both final and subassembly. To improve diaphragm assembly efficiency and maintain consistent quality, it's necessary to integrate functional components for gluing and riveting, improve dispensing and riveting tooling, and leverage visual measurement and data acquisition systems to achieve a paperless production process, creating an automated process with human-machine coordination.

[0003] The project plans to apply industry-leading radial riveting technology, which is also advantageous for riveting non-metallic products such as diaphragms, facilitating automated integration. However, its pendulum-type motion and process characteristics make it disadvantageous when rivet protrusion is long, making it unsuitable for actual production of various diaphragm components, or even worse. While its potential for advancement can be reduced by optimizing component design to shorten rivet length, for most industries, widespread application is difficult without extensive validation and product design involvement. Summary of the Invention

[0004] In order to solve the above problems, the present invention provides a diaphragm assembly and measuring device, which is based on the concept of human-machine collaboration optimization, carries out automated assembly applications, and integrates multiple process technologies to achieve the lean production goal of quality first and convenient operation.

[0005] The technical solutions of the present invention are as follows:

[0006] A diaphragm assembly measurement device includes a work surface, on which are provided a glue coating tool, a quick-change glue dispensing cylinder, a three-axis motion mechanism, a glue dispensing vision system, a truss-type transfer mechanism, a servo riveting mechanism, a measuring lens, a riveting vision camera, a radial riveting unit, a riveting tool and a two-axis servo module; the quick-change glue dispensing cylinder is arranged at the left rear part of the work surface, the three-axis motion mechanism is arranged at the left front part of the work surface, and the glue coating tool is installed on the three-axis motion mechanism; the parts are placed on the three-axis motion mechanism to complete the glue coating, and the glue dispensing is completed. The glue vision is set on the three-axis motion mechanism; the parts after gluing are placed on the truss-type transfer mechanism located in the middle front part of the work surface, the middle section of the truss-type transfer mechanism is provided with a servo riveting mechanism, and the servo riveting mechanism is provided with a measuring lens and a riveting vision camera. The rear section of the truss-type transfer mechanism is provided with a radial riveting unit and a riveting tooling. The riveted parts are placed on the riveting tooling, and the bottom of the riveting tooling is provided on the two-axis servo module. The riveting tooling moves between the right front part to the right rear part of the work surface through the two-axis servo module.

[0007] Furthermore, it also includes an HMI display screen. Baffles are provided on the left side, right side, front side and top of the work surface, and the HMI display screen is arranged on the front baffle.

[0008] Furthermore, product parts are identified through dispensing vision, and matching expected programs are provided to drive the three-axis motion mechanism, truss transfer mechanism, servo riveting mechanism, radial riveting unit and riveting tooling.

[0009] Furthermore, the three-axis motion mechanism includes a support column, an X-axis linear module, a Z-axis linear module, a Y-axis linear module, and a glue dispensing light source. The glue coating tooling includes a first glue cylinder, a second glue cylinder, a tooling tray and a glue drop box; the tooling tray is arranged on the moving end of the Y-axis linear module, the X-axis linear module is arranged above the Y-axis linear module through the support column, the Z-axis linear module is installed on the moving end of the X-axis linear module, the moving end of the Z-axis linear module is installed with the first glue cylinder and the second glue cylinder through the slide cylinder, the glue dispensing vision is installed on the side of the slide cylinder, and a glue dispensing light source is also provided next to the glue dispensing vision, and the glue drop box is arranged next to the X-axis linear module.

[0010] Furthermore, the truss-type transfer mechanism includes a pillar, a second X-axis linear module, a second Z-axis linear module, a clamping cylinder, clamping fingers and a tooling tray. The second X-axis linear module is suspended by the pillar, the second Z-axis linear module is arranged on the moving end of the second X-axis linear module, and the clamping cylinder is installed on the moving end of the second Z-axis linear module. The clamping cylinder fixes the tooling tray through the clamping fingers.

[0011] Furthermore, the servo riveting mechanism, the measuring lens, the riveting vision camera, the radial riveting unit and the riveting tooling together constitute a composite riveting mechanism. The servo riveting mechanism and the radial riveting unit are arranged above the riveting tooling. The tooling pallet on the riveting tooling is placed through a truss-type transfer mechanism. The riveting tooling is installed on a two-axis servo module. The two-axis servo module includes a third X-axis linear module and a third Y-axis linear module installed up and down.

[0012] Furthermore, it also includes a closed drying box for curing, a quick-change airtightness test tool and a leakage test instrument. The closed drying box for curing is set next to the work table, and the quick-change airtightness test tool and the leakage test instrument are placed on another table next to the closed drying box for curing.

[0013] Furthermore, the quick-change airtight test tooling includes a shaft clamp, a bearing seat, a shaft fixing part, a quick locking mechanism, a guide column, a linear guide rail and a quick-change interface. The airtight tooling is slidably mounted on the linear guide rail. An airtight test bench is provided above the linear guide rail. The airtight test bench is limited by the guide columns on both sides. A bearing seat is provided on the guide column. The top of the bearing seat is a shaft fixing part. The airtight test bench is also provided with a quick-change interface and a quick-change interface. A shaft clamp is provided above the airtight test bench.

[0014] The beneficial effects of the present invention are as follows:

[0015] 1. The integrated assembly process for multiple workstations utilizes a horizontal dual-flow process, enabling operators to work continuously on the integrated equipment. Through parallel and serial three-dimensional linkage of gluing, riveting, and fastening devices, coupled with quick-change and quick-pressing tooling, the component assembly process is optimized, ensuring process stability and improving efficiency. Two major types of diaphragms are integrated, with the fastening and riveting processes being produced on the same equipment.

[0016] 2. The overall operation of the device of the present invention follows two sets of processes. If the part being processed is a fastening diaphragm, the process is completed continuously using glue application and a fastening bit. For riveting diaphragms, the operator remains in the gluing position, stacks the parts after gluing, presses the riveting switch, and the equipment transfer mechanism activates, moving the riveting tool to the riveting position for riveting, and then returning. This allows for centralized work on the left side, reducing personnel turnover time. The reduced time can be used for continuous loading operations, thus achieving a single-piece continuous flow in the assembly sequence. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0018] Figure 1Assembling a measuring device for a diaphragm assembly of the present invention;

[0019] Figure 2 It is the visual dispensing mechanism of the present invention;

[0020] Figure 3 The truss type transfer mechanism of the present invention;

[0021] Figure 4 The composite riveting mechanism of the present invention;

[0022] Figure 5 This is a typical riveting tool of the present invention, with a single interchangeable station on the left and multiple stations on the right;

[0023] Figure 6 Schematic diagram of the quick-change airtightness test fixture of the present invention;

[0024] Among them, 1-1—complete set of loading carts, 1-2—all-in-one machine touch screen, 1-3—glue coating tooling, 1-4—quick-change glue dispensing cartridge, 1-5—three-axis motion mechanism, 1-6—glue dispensing vision, 1-7—HMI display, 1-8—truss transfer mechanism, 1-9—torque wrench, 1-10—servo riveting mechanism, 1-11—measuring lens, 1-12—riveting vision camera (error proofing), 1-13—radial riveting unit, 1-14—riveting tooling, 1-15—switch button, 1-16 tightening tooling, 1-17—two-axis servo module, 2-1—enclosed drying box for curing, 3-1 quick-change airtightness test tooling, 3-2 leakage test instrument;

[0025] 1-51—Support column, 1-52—X-axis linear module, 1-53—Z-axis linear module, 1-54—Y-axis linear module, 1-55—First drag chain, 1-57—Glue dispensing light source, 1-38—First glue cylinder, 1-39—Second glue cylinder, 1-510—Slide cylinder, 1-311—Tooling tray, 1-312—Glue dispensing box;

[0026] 1-81—pillar, 1-82—fixed seat, 1-83—second X-axis linear module, 1-84—second Z-axis linear module, 1-85—second drag chain, 1-86—clamping cylinder, 1-87—clamping finger, 1-88—tooling tray;

[0027] 1-171—third Y-axis linear module, 1-172—third X-axis linear module, 1-173—transfer module, 1-101—third drag chain, 1-111—riveted light source, 1-1013—guide column, 1-1010—left guardrail, 1-1014—right guardrail; 1-18—light grid; 1-19—transverse guide rail;

[0028] 3-11—Shaft clamp, 3-12—Bearing seat, 3-13—Shaft fixing parts, 3-14—Quick locking mechanism, 3-15—Guide column, 3-16—Linear guide rail, 3-17—Tooling moving handle, 3-18—Limiting part, 3-19—Quick change interface, 3-110 Adjustable foot cup. DETAILED DESCRIPTION

[0029] This section is an embodiment of the present invention, which is used to explain and illustrate the technical solution of the present invention. In the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0030] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate directions or positional relationships based on the orientations or positional relationships in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or case referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second" and the like are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance or implying the number of technical features indicated. Thus, features defined as "first", "second" and the like may explicitly or implicitly include more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0031] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be interpreted broadly. For example, they may refer to fixed, detachable, or integrated connections; mechanical or point connections; direct or indirect connections through an intermediary; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0032] Example 1:

[0033] This multi-station servo riveting system integrates a key component: a servo riveting mechanism coupled with a specially optimized quick-change riveting tool. This specialized tooling is designed specifically for complex, multi-step, stacked diaphragm assemblies, further emphasizing the principle of quality first. This system integrates a variety of technical applications, including a dispensing head change mechanism for three or more adhesives, a tightening mechanism assembly, a secure transfer mechanism, a riveting belt visual measurement system, and a matching rivet loading device. Finally, to facilitate production, a customized production system enables efficient data collection, improving the standardization and informatization of assembly operations.

[0034] A diaphragm assembly measuring device includes a work surface, on which are provided a glue coating tool 1-3, a quick-change glue dispensing cylinder 1-4, a three-axis motion mechanism 1-5, a glue dispensing vision system 1-6, a truss-type transfer mechanism 1-8, a servo riveting mechanism 1-10, a measuring lens 1-11, a riveting vision camera 1-12, a radial riveting unit 1-13, a riveting tool 1-14, and a two-axis servo module 1-17; the quick-change glue dispensing cylinder 1-4 is provided at the left rear part of the work surface, the three-axis motion mechanism 1-5 is provided at the left front part of the work surface, and the glue coating tool 1-3 is installed on the three-axis motion mechanism 1-5; the parts are placed on the three-axis motion mechanism 1-5 to complete the glue coating, and the glue dispensing vision system is provided. 1-6 is provided on the three-axis motion mechanism 1-5; the parts after gluing are placed on the truss-type transfer mechanism 1-8 provided on the front middle part of the work surface; the middle section of the truss-type transfer mechanism 1-8 is provided with a servo riveting mechanism 1-10; the servo riveting mechanism 1-10 is provided with a measuring lens 1-11 and a riveting vision camera 1-12; the rear section of the truss-type transfer mechanism 1-8 is provided with a radial riveting unit 1-13 and a riveting tool 1-14; the riveted parts are provided on the riveting tool 1-14; the bottom of the riveting tool 1-14 is provided on the two-axis servo module 1-17; the riveting tool 1-14 moves between the right front part and the right rear part of the work surface through the two-axis servo module 1-17.

[0035] The work surface further comprises HMI display screens 1-7. Baffles are provided on the left side, right side, front side and top side of the work surface, and the HMI display screens 1-7 are provided on the front side baffle.

[0036] The product parts are identified through the dispensing vision 1-6, and the matching expected program is provided to drive the three-axis motion mechanism 1-5, the truss transfer mechanism 1-8, the servo riveting mechanism 1-10, the radial riveting unit 1-13 and the riveting tooling 1-14.

[0037] The three-axis motion mechanism 1-5 includes a support column 1-51, an X-axis linear module 1-52, a Z-axis linear module 1-53, a Y-axis linear module 1-54, and a glue dispensing light source 1-57. The glue dispensing tool 1-3 includes a first glue cylinder 1-38, a second glue cylinder 1-39, a tool tray 1-311, and a glue dispensing box 1-312. The tool tray 1-311 is located on the moving end of the Y-axis linear module 1-54, and the X-axis linear module 1-52 is located on the support column 1-51. Above the Y-axis linear module 1-54, the Z-axis linear module 1-53 is installed on the moving end of the X-axis linear module 1-52. The moving end of the Z-axis linear module 1-53 is installed with the first glue cylinder 1-38 and the second glue cylinder 1-39 through the slide cylinder 1-510. The dispensing vision 1-6 is installed on the side of the slide cylinder 1-510. A dispensing light source 1-57 is also provided next to the dispensing vision 1-6. The glue box 1-312 is located next to the X-axis linear module 1-52.

[0038] The truss-type transfer mechanism 1-8 includes a pillar 1-81, a second X-axis linear module 1-83, a second Z-axis linear module 1-84, a clamping cylinder 1-86, a clamping finger 1-87 and a tooling tray 1-88. The second X-axis linear module 1-83 is suspended by the pillar 1-81, and the second Z-axis linear module 1-84 is arranged on the moving end of the second X-axis linear module 1-83. The clamping cylinder 1-86 is installed on the moving end of the second Z-axis linear module 1-84, and the clamping cylinder 1-86 fixes the tooling tray 1-88 through the clamping finger 1-87.

[0039] The servo riveting mechanism 1-10, the measuring lens 1-11, the riveting vision camera 1-12, the radial riveting unit 1-13 and the riveting tool 1-14 together constitute a composite riveting mechanism. The servo riveting mechanism 1-10 and the radial riveting unit 1-13 are arranged above the riveting tool 1-14. The tooling pallet 1-149 on the riveting tool 1-14 is placed through a truss-type transfer mechanism 1-8. The riveting tool 1-14 is installed on a two-axis servo module 1-17. The two-axis servo module 1-17 includes a third X-axis linear module 1-178 and a third Y-axis linear module 1-179 installed up and down.

[0040] It also includes a closed drying box 2-1 for curing, a quick-change airtightness test tool 3-1 and a leakage test instrument 3-2. The closed drying box 2-1 for curing is set next to the work table, and the quick-change airtightness test tool 3-1 and the leakage test instrument 3-2 are placed on another table next to the closed drying box 2-1 for curing.

[0041] The quick-change airtight test fixture 3-1 includes a shaft clamp 3-11, a bearing seat 3-12, a shaft fixing part 3-13, a quick locking mechanism 3-14, a guide column 3-15, a linear guide rail 3-16 and a quick-change interface 3-19. The airtight tooling is slidably mounted on the linear guide rail 3-16. An airtight test bench is provided above the linear guide rail 3-16. The airtight test bench is limited by the guide columns 3-15 on both sides. A bearing seat 3-12 is provided on the guide column 3-15. The top of the bearing seat 3-12 is a shaft fixing part 3-13. A quick-change interface 3-19 and a quick-change interface 3-19 are also provided on the airtight test bench. A shaft clamp 3-11 is provided above the airtight test bench.

[0042] Example 2:

[0043] The device of the present invention proposes a component assembly production method based on multiple varieties and small batches, carries out automated assembly applications based on the concept of human-machine collaboration optimization, and integrates multiple process technologies to achieve the lean production goal of quality first and convenient operation.

[0044] 1) Design a dual-station, multi-step device integrating gluing, riveting (including rotary riveting), and tightening. Optimize the workflow and tooling, and integrate it with an in-line leakage tester to ensure stable production and quality, with controllable parameters. This addresses typical quality issues in diaphragm assemblies, such as skewed riveting of small aluminum rivets, undersized diameter after riveting, and surface damage to the aluminum shell.

[0045] 2) Achieve the application of more than 20 types of two major categories of typical diaphragm product components and rapid model change; meet the overall production capacity and quality requirements of the line construction.

[0046] 3) Achieve human-machine collaboration with optimal benefits, liberate on-site assembly capabilities, and reduce labor intensity and skill requirements.

[0047] 4) PLC-controlled servo mechanisms are often used to achieve a high level of automation. The overall equipment works stably, safely and reliably.

[0048] 5) The online recording system of continuous workstation assembly record cards based on batch management realizes data collection and informatization, facilitates further production line upgrades in the future, and lays the foundation for future intelligent manufacturing.

[0049] The integrated assembly process at the composite station utilizes a horizontal dual-flow process, enabling operators to work continuously on the integrated equipment. Through parallel and serial three-dimensional linkage of gluing, riveting, and fastening devices, coupled with quick-change and quick-pressing tooling, the component assembly process is optimized, ensuring process stability and improving efficiency. Two major types of diaphragms are integrated, with the fastening and riveting processes being produced on the same equipment.

[0050] The riveting tooling has four half-pins for positioning and double-layer quick change, which enables the matching use of general and special tooling components.

[0051] The equipment incorporates servo displacement control and pressure sensor detection mechanisms, improving riveting quality issues such as rivet diameter deviation, pressure tilting, and aluminum shell damage. The automated device, combined with a subsequent leak tester, enables full process control of the diaphragm assembly process, ensuring consistent product quality.

[0052] The integration of riveting processes allows for customized matching. The introduction of radial riveting simplifies tooling. To address the issue of excessive rivet length, the company focuses on utilizing press riveting (or combined riveting) combined with tooling improvements, ensuring the quality of riveted product components while minimizing localized deformation.

[0053] A vision measurement system with integrated error-proofing functionality. Parameters such as tooling reference hole positions (8H7) and tooling QR codes are pre-determined before actual production to ensure process stability. Tooling uses three-dimensional coordinate measurement data to ensure precise alignment with programmed points.

[0054] The cross-platform formula mode of PLC, visual software, and online data acquisition system (in-line MES) is combined to achieve efficient switching in multiple varieties and online circulation of assembly record cards based on batch operations;

[0055] The combination of a dual-position, complete set of swing-plate rivet loading devices and a quick-change airtightness tester achieves efficient and stable operation, promoting the transition to standardized process production processes. It is suitable for small-variety, multi-batch production rather than single-piece production.

[0056] The design utilizes a tool transfer mechanism to enable personnel to collaborate safely and efficiently at a single workstation, thereby improving operational standardization.

[0057] The three-station heterogeneous fast pressing tooling enables continuous riveting and pressing operations for typical complex components, single-piece continuous flow production within the equipment, and accurate and effective collection of measured parameters of key product components.

[0058] Set up a closed drying oven to prevent dust and odor (can be connected to an external environmentally friendly glue removal system) to keep the production environment clean and tidy, avoid contamination of qualified products, and prevent assembly dust particles and other unnecessary materials from affecting the overall assembly quality.

[0059] A quick-press mechanism equipped with a pressure sensor and a dedicated series of quick-change chemical equipment replaces the original screw-tightening bubble-through airtightness test method. Timely data recording ensures the quality of final product components and achieves the goal of reducing manpower and increasing efficiency.

[0060] To address quality issues such as tilting, crushing, and dimensional deviations caused by manual riveting and to standardize the production process, an all-in-one coating system was designed. This system combines the automated rivet gluing process with the subsequent airtightness testing process using a leak tester, creating an independent production line or diaphragm assembly and testing unit. This unit is basically arranged into three workstations: E1, E2, and E3.

[0061] Among them, E1 and E2 are key core equipment, integrating different functions such as gluing (E1), fastening / riveting (E2), and visual inspection. The innovation of the project is mainly reflected in the continuous and centralized operation of the workstations, which is equivalent to the one-person-multiple-machine production model in the machining industry. According to the functional components, they can be divided into:

[0062] 1) The master control system uses an all-in-one PC and integrates an online assembly record card circulation system to ensure production continuity and implement functions such as assembly record cards, information collection, archiving and printing. The focus is on batch production management and traceability rather than high-frequency collection of single pieces.

[0063] 2) The equipment is centrally controlled by a unified PLC, which facilitates action programming (covering 50 sets of subroutines) and enables physical data communication of the production line, laying the foundation for ultimately opening up the production chain and realizing in-line data collection.

[0064] 3) The three-axis dispensing machine uses visual recognition and automatic logic programming, which is efficient and convenient; the key is the rapid changeover of matching glue materials and tooling.

[0065] 4) It adopts servo Y-axis + truss-type handling mechanism, with dual workstations but only one person operating to ensure personnel safety.

[0066] 5) An electric torque wrench is added to the middle position, and a series of separate special tooling is provided to suit fastening products.

[0067] 6) The riveting station integrates two riveting stations (Y-axis direction), with a servo press (2 tons) at the near end and a rotary riveting mechanism at the far end. Both are fixed with a four-column mechanism for high strength; the programs do not interfere with each other and have different control permissions.

[0068] 7) The XY two-axis motion system can not only meet the needs of independent operation of the riveting station, but also work in conjunction with the transfer system to achieve safe collaboration for personnel on the left side.

[0069] The entire equipment operates according to two sets of processes. If the part being processed is a fastening diaphragm, the process is completed continuously using glue application and a fastening bit. For riveting diaphragms, the operator remains at the gluing station (E1), stacks the parts after gluing, and presses the riveting switch. The equipment's transfer mechanism activates, moving the riveting tool to the riveting station (E2) for riveting, and then back to (E1). This allows for centralized work at the left-hand side E1 station, reducing personnel turnover time. This reduced time can be used for continuous loading, thus achieving a single-piece, continuous flow in the assembly sequence.

[0070] Example 3:

[0071] The specific operation process is divided into two categories, fastening and riveting:

[0072] Regardless of the diaphragm assembly product, only one specific adhesive and corresponding process flow are used, depending on the process requirements. However, between painting and gluing and direct gluing without painting, there is a 30-minute waiting period for the primer to dry. Therefore, this is considered a production preparation step, with batches of parts assembled in advance before proceeding to the subsequent gluing process. The following describes the process flow for two specific scenarios.

[0073] For fastening diaphragms, representative examples are process screw tightening and auxiliary clamping block clamping. When applying glue, press the current station operation button, the machine starts to move automatically, identifies the corresponding product and tooling, and after matching, the module drives the tooling to start automatic gluing. After gluing, it returns to the front of the table and is manually placed in the fastening tooling position (the process screws have been placed in advance). Use a servo electric wrench to quickly tighten the process nuts (both hands synchronously). After reaching the set tightening torque, it automatically stops and the component product is taken out. Repeat the above actions to complete batch processing. This process does not require subsequent riveting, but if the process requires measuring air tightness, it is required to cure at room temperature for 24 hours and then proceed to subsequent testing; use a 3-1 quick-change airtightness test tooling docking 3-2 leakage tester in combination, and the program can be operated with one button.

[0074] Riveted diaphragms are produced in a unified continuous flow process, with both single-station and multi-station options. This involves applying glue (including primer) according to the aforementioned process. After a set of product parts are coated on the corresponding metal contact surfaces and returned to operation, manual intervention occurs. The operator quickly places the part on the riveting fixture at the waiting station and presses it, then presses the riveting switch button (1-15) to start the process. When the riveting fixture (1-14) moves to the internal waiting position, the transfer mechanism activates and transports it to the riveting station (primary pressure riveting and secondary rotation riveting). The riveting station's visual recognition mechanism uses a telecentric lens to accurately identify the reference hole position and identifies the corresponding fixture through a QR code, enabling error prevention and step-by-step riveting, single-hole unit riveting. This is followed by visual measurement (which may include displacement sensor height measurement) to ensure the quality of each rivet. Pressure sensors are also used to monitor the riveting pressure and initial pressure, allowing for any abnormalities to be detected and the next step to be stopped.

[0075] Most riveted diaphragms also need to undergo airtightness testing (in the early days, it was a bubble test). Therefore, the degree of rivet compression needs to be strictly controlled to avoid deformation of the aluminum metal parts in the assembly and avoid the risk of air leakage caused by local warping of the parts.

[0076] 1) Double-station interchangeable three-axis dispensing mechanism.

[0077] The mechanism uses a customized three-axis motion mechanism (1-5) with visual recognition capabilities. The dispensing vision camera (1-6) recognizes the product part (tooling QR code) and confirms that it matches the expected program, avoiding misoperation and improving the equipment's applicability.

[0078] Because some parts are small and the adhesive used for diaphragm parts is viscous, the use of contour positioning glue coating tooling (1-3) can ensure production stability. Some tooling can be simplified to a flexible tray without visual inspection to improve universal capabilities.

[0079] The gluing process uses a common integrated visual gluing mechanism. However, the project's innovation lies in the fact that the control of glue application is closely related to subsequent glue overflow, glue wiping, and component sealing after compaction. To ensure applicability, a quick-change dispensing cartridge (1-4) mechanism was adopted for the four types of glue required for the two major product categories (including primer and rivet glue). A dispensing head calibration mechanism was also established to improve changeover accuracy and production efficiency. This ensures sealing while minimizing unnecessary glue wiping.

[0080] We considered using a precision screw valve for glue application to strictly control the glue output, but due to the frequent changeovers and maintenance issues, we decided not to use this method. Of course, cost considerations were also an important factor.

[0081] The innovation focus of the gluing part is still the replacement of the gluing tooling (1-3). Taking into account the size and complexity of the products, the tooling tray uses a unified base plate and a single set of 4 positioning pins, with 2 being effective. The actual application tooling is divided into three categories. The smallest can install two sets at the same time to improve efficiency, and the largest tooling can adapt to the simultaneous gluing (including primer) of more than 10 parts.

[0082] Because the goal of primer application is to ensure good adhesion between the contact surfaces, diaphragm parts often require coating on both sides with a thickness of 0.5-0.6mm in the middle. Therefore, a flipping station is installed to achieve efficient complete set processing for more than two sets of products. Combined with the established procedures, this minimizes operational errors and prevents glue leaks.

[0083] 2) Truss type transfer mechanism (1-8).

[0084] The mechanism utilizes a two-column truss structure, combined with Y-axis servo systems at left and right workstations, to form a "gate"-type reciprocating system. The starting fixture is located slightly to the right of the E1 gluing mechanism, conveniently positioning the glued parts. The final point is the riveting station, which often takes longer than the gluing sequence, leaving ample time for manual material placement, removal, and cleaning. The equipment is manually operated during startup, with handling and recovery returning to automatic operation, ensuring safety, convenience, and efficiency.

[0085] Four guide pins (standard diameter 12, precision fit within a small clearance) are installed on both sides of the transfer tray to ensure the positioning of the tooling and the connection between the workstations, and to achieve rapid tooling changeover. Four semicircular holes are set on the tooling to use the mechanism to place the tooling in place.

[0086] 3) Composite riveting mechanism 1-10~15.

[0087] The mechanism adopts a four-column frame, integrating the servo riveting mechanism 1-10 and the radial riveting unit 1-13, and is equipped with a two-axis motion system 1-17 to achieve linkage with the transfer mechanism 1-8, ensuring safety and continuous use of the tooling.

[0088] The original radial riveting units 1-13 included a press riveting function with automatic return of the riveting rod. However, their pneumatic clamping force was limited. Currently, it has been verified to meet the upsetting requirements for aluminum rivets under 2 mm. The advantage is that the riveting tooling does not require a pressure plate or clamping mechanism to clamp the component parts up and down. During the project implementation, considering the riveting range and the rigidity issues of the original structure, a dedicated 2T servo press mechanism was added to cover the press riveting needs of rivets ranging from 1.4 to 6 mm.

[0089] Based on the advantages of radial spin riveting, it can be used for special process requirements such as new products that avoid product deformation, and can realize rapid positioning riveting of connecting rod components (needed for expansion). Because the size of the middle part of the rivet column changes little after riveting, only the head is thickened, which can ensure smooth rotation.

[0090] To date, the application and promotion of the typical riveted product components involved in the project has covered more than 20 types, achieving the expected goal. It is worth noting that the project has improved and optimized the tooling to ensure quality.

[0091] Regarding the application of the aforementioned typical tooling, the tooling is divided into two categories based on the complexity of the aforementioned diaphragm components. Both are serially designed. Simple components have a universal connection tray, resulting in a two-layer quick-change structure. For large diaphragm components, the tooling is a dedicated, single-layer quick-change base. This ensures stability while reducing changeover complexity. The former significantly reduces tooling storage space and improves operational convenience when dealing with a wide variety of components.

[0092] As a typical composite three-station Figure 5 Right), and used as a device component, with three tool stations for guide rods and rivet rods (see Figure 4 (upper left, replaceable) A unified central rivet rod enables continuous riveting of multiple components regardless of rivet size. The guide rod on the right is specifically designed for slender rivets less than 2mm long, ensuring the rivet is vertically positioned before press riveting, ensuring a single-step riveting and high-quality connection. For ease of loading, a quick clamping mechanism and a limiter are used, making it more convenient than the original hinge mechanism.

[0093] This is a key factor in quality improvement. All platen openings are chamfered for two main purposes: first, to guide the rivet rod into the positioning platen hole to avoid excessive interference; second, to allow for visual photography through light to accurately measure the rivet head diameter after riveting. This further integrates production and measurement to achieve critical data collection.

[0094] In practice, to meet production requirements, we consider parallelizing vision measurement and riveting as three processes, while also implementing optional functional modules (for production of only one or two sets). In continuous-flow production of batch components, since the first two and last two parts are not located at existing workstations, vision function shielding is required. Currently, automatic shielding is enabled for the first two parts, while optional shielding is enabled for subsequent parts, in accordance with on-site operational requirements. This allows for adapting to production needs of varying batch sizes.

[0095] Emphasis is placed on the design of workstation automation process. If the tooling adopts single-station operation, it means that the adhesive used in each component (especially two-component silicone) is from different batches and has different curing cycles, which will lead to inconsistent product status after 24 hours of final curing. The current process scheme is most in line with the concept of local single-piece flow production, and the stability of product quality is relatively easier to control. At the same time, the management and control of batch production and the operation mode of the production line are not single-piece flow, but batch flow, which is also the origin of the composite production method described in this embodiment. Its ultimate goal is to improve assembly production efficiency under the premise of quality and management priority, rather than pursuing absolute efficient automation.

[0096] The actual riveting position is equipped with a safety grating to ensure the safety of the operator. It is usually only used in the early debugging process, and the operator works in the glue application position later.

[0097] 4) Brief description of key inspection stations for gas testing.

[0098] Automated equipment can't improve product quality, but it can significantly improve quality stability through process solidification. On this basis, automated equipment combined with convenient and efficient testing equipment can achieve efficient production with both high efficiency and reliable quality.

[0099] Regarding the application of the aforementioned typical tooling, the tooling is divided into two categories based on the complexity of the aforementioned diaphragm components. Both are serially designed. Simple components have a universal connection tray, resulting in a two-layer quick-change structure. For large diaphragm components, the tooling is a dedicated, single-layer quick-change base. This ensures stability while reducing changeover complexity. The former significantly reduces tooling storage space and improves operational convenience when dealing with a wide variety of components.

[0100] As a typical composite three-station Figure 5 Right), and used as a device component, with three tool stations for guide rods and rivet rods (see Figure 4 (upper left, replaceable) A unified central rivet rod enables continuous riveting of multiple components regardless of rivet size. The guide rod on the right is specifically designed for slender rivets less than 2mm long, ensuring the rivet is vertically positioned before press riveting, ensuring a single-step riveting and high-quality connection. For ease of loading, a quick clamping mechanism and a limiter are used, making it more convenient than the original hinge mechanism.

[0101] This is a key factor in quality improvement. All platen openings are chamfered for two main purposes: first, to guide the rivet rod into the positioning platen hole to avoid excessive interference; second, to allow for visual photography through light to accurately measure the rivet head diameter after riveting. This further integrates production and measurement to achieve critical data collection.

[0102] In practice, to meet production requirements, we consider parallelizing vision measurement and riveting as three processes, while also implementing optional functional modules (for production of only one or two sets). In continuous-flow production of batch components, since the first two and last two parts are not located at existing workstations, vision function shielding is required. Currently, automatic shielding is enabled for the first two parts, while optional shielding is enabled for subsequent parts, in accordance with on-site operational requirements. This allows for adapting to production needs of varying batch sizes.

[0103] Emphasis is placed on the design of workstation automation process. If the tooling adopts single-station operation, it means that the adhesive used in each component (especially two-component silicone) is from different batches and has different curing cycles, which will lead to inconsistent product status after 24 hours of final curing. The current process scheme is most in line with the concept of local single-piece flow production, and the stability of product quality is relatively easier to control. At the same time, the management and control of batch production and the operation mode of the production line are not single-piece flow, but batch flow, which is also the origin of the composite production method described in this embodiment. Its ultimate goal is to improve assembly production efficiency under the premise of quality and management priority, rather than pursuing absolute efficient automation.

[0104] The actual riveting position is equipped with a safety grating to ensure the safety of the operator. It is usually only used in the early debugging process, and the operator works in the glue application position later.

[0105] 4) Brief description of key inspection stations for gas testing.

[0106] Automated equipment can't improve product quality, but it can significantly improve quality stability through process solidification. On this basis, automated equipment combined with convenient and efficient testing equipment can achieve efficient production with both high efficiency and reliable quality.

[0107] Diaphragm assemblies are pneumatically powered components, and their sealing and mobility are crucial to product performance. Whether fastened or riveted, airtightness testing is often required. Key typical airtightness indicators are: 0.5ml / 3min, with a formal test time of at least 3 minutes and minimal flow (bubbling test: no more than 3 bubbles at slight leak). Leak testing, in lieu of water testing, provides excellent comparative verification results and significantly improves efficiency.

[0108] The original water test method (bubbling) required a low-pressure, low-flow air tightness test bench and special tooling. The tooling sometimes required two people to work together, as 18 screws were tightened and sealed separately. A single set of tests took an average of more than 10 minutes, and disassembly of the product alone took 5 to 8 minutes. Bubbling conditions also needed to be continuously observed, and components had to be disassembled repeatedly when necessary.

[0109] The improved solution allows for one-click testing and data upload. Operation time per unit can be reduced to 2 minutes, with measurement data uploaded promptly for easy control and review. This improves efficiency by more than five times on average. This significantly reduces safety risks associated with the numerous electrical equipment on the production line.

[0110] 5) Consider production readiness. Riveted components, especially the typical complex large diaphragm mentioned above, involve three different specifications of rivets, which require surface coating with KS-M glue for sealing. Originally operated manually, it was difficult to evenly apply glue on the cylindrical surface of small rivets, and there was a certain risk of poor sealing. For this reason, a small automatic gluing device was specially designed to achieve unified loading, which is convenient for quick clamping during production. The device needs to cover more than 10 different specifications of rivets. By optimizing the design according to diameter, 5 types of tooling can meet production needs, and quick change (double-headed clamp) can be achieved.

[0111] In summary, the equipment, through its multi-station functional integration, ultimately achieves a human-machine collaborative model for the production of a wide variety of small-batch diaphragm assemblies, significantly improving on-site assembly efficiency. Furthermore, the equipment utilizes components such as pressure sensors and cameras to control key processes, comprehensively improving diaphragm assembly quality and meeting delivery requirements.

[0112] This case is not limited to the use of manipulators or flat manual multi-group roller-type (including bull's eye) mechanisms to achieve the transfer of riveting tooling. Its essential requirements are safety needs and improved space layout under the collaboration of one person.

[0113] Advanced collaborative robots can, in principle, participate in the assembly process, achieving fully unmanned operations. However, optimal applicability must be considered, especially given the silicone diaphragm material described in this example. While visual recognition accuracy is not a major concern when the diaphragm is flat, hole alignment during assembly poses significant challenges. Achieving continuous assembly still requires extensive practice and verification. Humanoid robots, supported by AI grippers, may be more capable of achieving this functionality.

[0114] Considering that there is still a need for a large number of tooling changes, special tooling change stations need to be prepared when necessary, which is common in the machining industry.

[0115] As mentioned above, the riveting tooling positioning in this case uses a simple combination of four pins and a semicircular arc for positioning. In principle, this can also be achieved using a spring-loaded tapered pin, or even the more popular zero-point positioning system in the industry. However, this is obviously a comprehensive consideration of cost and accuracy.

[0116] The more advanced servo-electric radial riveting mechanism combines both press riveting and riveting processes, offering greater performance advantages. However, for this example, it serves only as a functional component, and its quality remains to be determined in practice. Prioritize quality, with comprehensive cost considerations being preferred.

[0117] For airtightness test devices, manual rapid compression can be achieved using other power sources, further enhancing automation capabilities. However, the present invention emphasizes the use of serialized rapid changeover tooling in conjunction with corresponding quick-connect connectors to achieve rapid changeover in the case of high-variety, low-volume production.

[0118] Regarding the further height dimension measurement of the rivet, the first embodiment is not explicitly shown in the figure. However, if the PLC action program executed by the visual measurement is available, it is only necessary to add a laser displacement sensor to realize the height of the rivet exposed on the surface of the metal part. The measurement is relative and has high reliability.

[0119] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the field can easily think of various equivalent modifications or replacements within the technical scope disclosed by the present invention, and these modifications or replacements should all be covered by the scope of protection of the present invention.

Claims

1. A diaphragm assembly measuring device, characterized in that: The invention comprises a work surface, on which are provided a glue coating tool (1-3), a quick-change glue dispensing cylinder (1-4), a three-axis motion mechanism (1-5), a glue dispensing vision system (1-6), a truss-type transfer mechanism (1-8), a servo riveting mechanism (1-10), a measuring lens (1-11), a riveting vision camera (1-12), a radial riveting unit (1-13), a riveting tool (1-14) and a two-axis servo module (1-17); the quick-change glue dispensing cylinder (1-4) is arranged at the left rear part of the work surface, the three-axis motion mechanism (1-5) is arranged at the left front part of the work surface, and the glue coating tool (1-3) is installed on the three-axis motion mechanism (1-5); parts are placed on the three-axis motion mechanism (1-5) to complete the glue coating, and the glue dispensing vision system (1-6) is arranged On a three-axis motion mechanism (1-5); the glued parts are placed on a truss transfer mechanism (1-8) arranged in the middle front part of a work surface; a servo riveting mechanism (1-10) is arranged in the middle section of the truss transfer mechanism (1-8); a measuring lens (1-11) and a riveting visual camera (1-12) are arranged next to the servo riveting mechanism (1-10); a radial riveting unit (1-13) and a riveting tool (1-14) are arranged in the rear section of the truss transfer mechanism (1-8); the riveted parts are arranged on the riveting tool (1-14); the bottom of the riveting tool (1-14) is arranged on a two-axis servo module (1-17); the riveting tool (1-14) moves between the right front part and the right rear part of the work surface through the two-axis servo module (1-17).

2. A diaphragm assembly measuring device according to claim 1, characterized in that: It also includes an HMI display screen (1-7). The left side, right side, front side and top of the work surface are all provided with baffles, and the HMI display screen (1-7) is arranged on the baffle on the front side.

3. A diaphragm assembly measuring device according to claim 1, characterized in that: The product parts are identified through dispensing vision (1-6), and matching expected programs are provided to drive the three-axis motion mechanism (1-5), the truss transfer mechanism (1-8), the servo riveting mechanism (1-10), the radial riveting unit (1-13) and the riveting tooling (1-14).

4. A diaphragm assembly measuring device according to claim 1, characterized in that: The three-axis motion mechanism (1-5) includes a support column (1-51), an X-axis linear module (1-52), a Z-axis linear module (1-53), a Y-axis linear module (1-54), and a glue dispensing light source (1-57); the glue dispensing tool (1-3) includes a first glue cylinder (1-38), a second glue cylinder (1-39), a tool tray (1-311), and a glue dispensing box (1-312); the tool tray (1-311) is arranged on the moving end of the Y-axis linear module (1-54); the X-axis linear module (1-52) is moved by the support column (1-51 ) is arranged above the Y-axis linear module (1-54), the Z-axis linear module (1-53) is installed on the moving end of the X-axis linear module (1-52), the moving end of the Z-axis linear module (1-53) is installed with the first glue cylinder (1-38) and the second glue cylinder (1-39) through the slide cylinder (1-510), the dispensing vision (1-6) is installed on the side of the slide cylinder (1-510), and a dispensing light source (1-57) is also provided next to the dispensing vision (1-6), and the dispensing box (1-312) is arranged next to the X-axis linear module (1-52).

5. A diaphragm assembly measuring device according to claim 1, characterized in that: The truss type transfer mechanism (1-8) comprises a support (1-81), a second X-axis linear module (1-83), a second Z-axis linear module (1-84), a clamping cylinder (1-86), a clamping finger (1-87) and a tooling tray (1-88); the second X-axis linear module (1-83) is suspended by the support (1-81); the second Z-axis linear module (1-84) is arranged on the moving end of the second X-axis linear module (1-83); the clamping cylinder (1-86) is installed on the moving end of the second Z-axis linear module (1-84); and the clamping cylinder (1-86) fixes the tooling tray (1-88) through the clamping finger (1-87).

6. A diaphragm assembly measuring device according to claim 1, characterized in that: The servo riveting mechanism (1-10), the measuring lens (1-11), the riveting visual camera (1-12), the radial riveting unit (1-13) and the riveting tool (1-14) together form a composite riveting mechanism. The servo riveting mechanism (1-10) and the radial riveting unit (1-13) are arranged above the riveting tool (1-14). The tool tray (1-149) on the riveting tool (1-14) is placed through a truss-type transfer mechanism (1-8). The riveting tool (1-14) is installed on a two-axis servo module (1-17). The two-axis servo module (1-17) includes a third X-axis linear module (1-178) and a third Y-axis linear module (1-179) installed up and down.

7. A diaphragm assembly measuring device according to claim 1, characterized in that: The invention also comprises a closed drying box for curing (2-1), a quick-change airtightness test tool (3-1) and a leakage test instrument (3-2). The closed drying box for curing (2-1) is arranged next to a work surface, and the quick-change airtightness test tool (3-1) and the leakage test instrument (3-2) are placed on another surface next to the closed drying box for curing (2-1).

8. A diaphragm assembly measuring device according to claim 7, characterized in that: The quick-change airtight test fixture (3-1) comprises an axis clamp (3-11), a bearing seat (3-12), an axis fixing part (3-13), a quick locking mechanism (3-14), a guide column (3-15), a linear guide rail (3-16) and a quick-change interface (3-19). The airtight test fixture is slidably mounted on the linear guide rail (3-16). An airtight test bench is arranged above the linear guide rail (3-16). The airtight test bench is limited by guide columns (3-15) on both sides. A bearing seat (3-12) is arranged on the guide column (3-15). The top of the bearing seat (3-12) is an axis fixing part (3-13). The airtight test bench is also provided with a quick-change interface (3-19) and a quick-change interface (3-19). An axis clamp (3-11) is arranged above the airtight test bench.

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