Intelligent processing equipment for Bluetooth headset shell

Abstract

The invention relates to the technical field of earphone processing, in particular to Bluetooth earphone shell intelligent processing equipment which comprises a workbench, a lower cavity and an upper cavity are formed in the workbench, a U-shaped frame is fixedly connected to the top of the workbench, a mechanical arm and an industrial camera are installed on the lower side of the U-shaped frame, and two positioning frames are symmetrically arranged on the upper side of the workbench; the sides, close to each other, of the two positioning frames are each provided with a clamping mechanism, a reverse moving mechanism is arranged in the upper cavity, and the reverse moving mechanism drives the two positioning frames to be close to each other so as to drive the two clamping mechanisms to clamp and fix a workpiece. The clamping device is simple in structure and capable of being matched with complex curved surfaces and concave or convex contours of workpieces, full-contour fitting is achieved through self-adaptive deformation of the springs, the clamping contact area is enlarged, meanwhile, the workpieces are prevented from being damaged through flexible contact, and the problem that stability is poor due to the fact that only edges are fixed in traditional clamping is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of earphone processing, and more particularly to an intelligent processing device for a Bluetooth earphone housing. Background Art

[0002] A Bluetooth earphone is an earphone that applies Bluetooth technology, allowing users to get rid of the annoying wires and freely make calls in various ways easily. Since the advent of Bluetooth earphones, they have always been a good tool for mobile business people to improve efficiency.

[0003] Patent No. CN116156409A discloses a refined processing device for an earphone housing, which relates to the field of earphone housing processing and includes: a positioning component. There are two groups of the positioning components. The control seat of one group of the positioning components is fixedly installed on one side of the top of the installation base, and the control seat of the other group of positioning components is inserted on the other side of the top of the installation base, solving the problem that the existing clamping tool can only clamp and fix the outermost edge position of the earphone housing during clamping, with unstable fixation and no limit on the maximum clamping force. The positioning component fixes the earphone housing by fitting and clamping the outer contour of the earphone housing with adaptively clamping columns of different lengths. The clamping surface is large, and it is stable to use. Moreover, the regulation component can limit and adjust the maximum clamping moment of the device during clamping and fixing, so that the device will not cause the earphone housing to be damaged due to excessive clamping force during use.

[0004] Currently, when performing refined processing on the bumps, burrs, and scratches of the earphone housing, a clamping tool is needed to fix the earphone housing to facilitate subsequent refined processing of the earphone housing. Since the shapes of different earphone housings are numerous and complex, the clamping tool can only clamp and fix the outermost edge position of the earphone housing during clamping, with a relatively small clamping surface and unstable fixation. During the refined processing of the earphone housing, the earphone housing can rotate or fall, with poor stability. The maximum clamping force of the clamping tool cannot be limited, and the clamping force during clamping and fixing of the earphone housing completely depends on the worker's experience. The earphone housing is relatively thin and is very likely to be damaged due to excessive clamping force. Therefore, we propose an intelligent processing device for a Bluetooth earphone housing. Summary of the Invention

[0005] In order to overcome the above-mentioned defects of the prior art, the present invention provides an intelligent processing device for a Bluetooth earphone housing to solve the problems existing in the above-mentioned background art.

[0006] The present invention provides the following technical solution: an intelligent processing equipment for Bluetooth headset shells, comprising a workbench, wherein a lower chamber and an upper chamber are arranged in the workbench, the top of the workbench is fixedly connected to a U-shaped frame, a robotic arm and an industrial camera are installed on the lower side of the U-shaped frame, two positioning frames are symmetrically arranged on the upper side of the workbench, and a group of clamping mechanisms are arranged on the side where the two positioning frames are close to each other, a reverse moving mechanism is arranged in the upper chamber, the reverse moving mechanism drives the two positioning frames to approach each other, and then drives the two groups of clamping mechanisms to clamp and fix the workpiece, and an air pressure mechanism is arranged in the lower chamber, and the air pressure mechanism adjusts the air pressure in the clamping mechanism to ensure firm clamping.

[0007] Each group of the clamping mechanism includes a main cavity shell, a sealing cover, several air distribution cylinders, a second sealing ring, an air inlet and several groups of telescopic components. The main cavity shell is fixedly connected to the end of the positioning frame, the sealing cover is fixedly connected to the side of the main cavity shell, and several air distribution cylinders are fixedly connected to the side of the sealing cover. Several small holes are opened in the main cavity shell corresponding to the positions of the air distribution cylinders. The second sealing ring is embedded and installed between the main cavity shell and the sealing cover. The air inlet is fixedly connected to the side of the main cavity shell close to the positioning frame. Several groups of telescopic components correspond one-to-one with the air distribution cylinders. Each group of telescopic components is used to adapt to different shapes of workpieces.

[0008] Furthermore, each group of the telescopic components includes a micro spring, a slider, a first sealing ring, an extension rod and a rubber ball. The micro spring and the slider are both arranged inside the air distributor cylinder. The first sealing ring is embedded in the circumferential surface of the slider. One end of the extension rod is fixedly connected to the slider, and the other end passes through the air distributor cylinder and extends to the outside. The rubber ball is fixedly connected to the end of the extension rod.

[0009] Furthermore, the reverse movement mechanism includes a slide rail frame, a screw sleeve, a double-threaded screw and a servo motor. The slide rail frame is fixedly connected to the upper chamber. Two screw sleeves are symmetrically arranged, both of which are slidably connected to the slide rail frame. The double-threaded screw is rotatably connected between the inner walls of the slide rail frame. The two screw sleeves are respectively threadedly connected to different threads of the double-threaded screw. The servo motor is fixedly connected to one end of the slide rail frame, and the output end of the servo motor is fixedly connected to the double-threaded screw.

[0010] Furthermore, the adjacent sides of the two positioning frames are fixedly connected to the reinforcement rods, and the two reinforcement rods are respectively fixedly connected to the tops of the corresponding screw sleeves.

[0011] Furthermore, the pneumatic mechanism includes an air pump, a tee and an air pipe. The air pump is fixedly connected to the lower chamber, one end of the tee is fixedly connected to the output end of the air pump, and two air pipes are provided, one end of each of which is connected to the tee, and the other end is connected to the corresponding air inlet and installed with a micro spring.

[0012] Furthermore, a pressure sensor is provided on the upper side of the main cavity housing, and the pressure sensor is electrically connected to the control system of the pneumatic mechanism.

[0013] Furthermore, a sewage discharge mechanism is provided on the workbench. The sewage discharge mechanism includes a central platform, a contraction cavity, and an outlet pipe. The central platform is provided at the center of the top of the workbench. The contraction cavity is provided below the central platform and communicates with the outlet pipe. The outlet pipe penetrates through the bottom of the workbench for discharging machining debris and waste liquid.

[0014] Furthermore, the end of the robotic arm is detachably connected to a machining tool and a nozzle. The nozzle is connected to a cleaning air source for blowing the residue on the surface of the workpiece.

[0015] Technical effects and advantages of the present invention: 1. By providing a clamping mechanism in the present invention, it is beneficial to adapt to the complex curved surface, concave or convex contour of the workpiece. Through the self-adaptive deformation of the spring, full-profile fitting is achieved, the clamping contact area is expanded, deformation occurs when contacting the surface of the workpiece, filling the concave and convex contours, such as the curved surface and groove of the earphone shell, expanding the clamping contact area, and at the same time avoiding damage to the workpiece through flexible contact, solving the problem of poor stability caused by traditional clamping only fixing the edge.

[0016] 2. By providing a closed-loop control system composed of a pneumatic mechanism and a pressure sensor in the present invention, it is beneficial to achieve "shape self-adaptation and force uniformity". After the air pressure is stabilized, the spring force and the air pressure form a dynamic balance. The rubber ball maintains fitting through flexible deformation, and at the same time allows small displacements of the workpiece, avoiding stress concentration caused by rigid clamping. Adopting a "spring active + air pressure passive" force control mode, there is no need to precisely control the displacement of the extension rod, and only the contact force is adjusted through air pressure, simplifying the complexity of the control system. The air pressure acts as a "flexible damper" and can absorb the vibration and impact during the machining process, avoiding the workpiece cracking caused by sudden external forces in traditional rigid clamping, and being able to adapt to workpieces of different shapes, expanding the scope of use.

[0017] 3. By providing a reverse movement mechanism in the present invention, it is beneficial to drive the positioning frame to move synchronously in the reverse direction, achieving micron-level displacement control, precisely adjusting the clamping position, and meeting the strict requirements of precision machining for positioning accuracy.

[0018] 4. By providing a sewage discharge mechanism in the present invention, it is beneficial to timely collect and discharge machining debris and waste liquid, and blow the residue on the surface of the workpiece through high-pressure air flow, keeping the machining environment clean and improving the degree of automation. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a schematic diagram of the overall structure of the present invention.

[0020] Figure 2 is a schematic side view structure diagram of the present invention.

[0021] Figure 3 This is the first sectional structure schematic diagram of the present invention.

[0022] Figure 4 This is the second sectional structure schematic diagram of the present invention.

[0023] Figure 5 This is the structural schematic diagram of the reverse movement mechanism of the present invention.

[0024] Figure 6 This is the structural schematic diagram of the clamping mechanism of the present invention.

[0025] Figure 7 This is for the Figure 6 other side structural schematic diagram of the present invention.

[0026] Figure 8 This is for the Figure 7 explosion structural schematic diagram of the present invention.

[0027] Figure 9 This is the structural schematic diagram of the telescopic component of the present invention.

[0028] Figure 10 This is the structural schematic diagram of the pneumatic mechanism of the present invention Reference numerals are: 1, workbench; 101, lower chamber; 102, upper chamber; 2, positioning frame; 201, reinforcing rod; 3, U-shaped frame; 4, robotic arm; 5, processing tool; 6, clamping mechanism; 601, main chamber housing; 602, sealing cover; 603, air distribution cylinder; 604, micro spring; 605, slider; 606, first sealing ring; 607, extending rod; 608, rubber ball; 609, second sealing ring; 6010, air inlet; 7, reverse movement mechanism; 701, slide rail frame; 702, lead screw sleeve; 703, double-threaded lead screw; 704, servo motor; 8, pneumatic mechanism; 801, air pump; 802, tee pipe; 803, air pipe; 804, air valve; 9, pressure sensor; 10, industrial camera; 11, sewage discharge mechanism; 1101, central platform; 1102, contraction chamber; 1103, outlet pipe; 12, nozzle. Detailed implementation manners

[0029] Next, the technical solutions in the present invention will be clearly and completely described in conjunction with the accompanying drawings in the present invention. In addition, the forms of each structure described in the following embodiments are only examples, and an intelligent processing device for a Bluetooth headset shell related to the present invention is not limited to the structures described in the following embodiments. All other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present invention.

[0030] Refer to Figures 1 - 10, the present invention provides an intelligent processing device for the shell of a Bluetooth headset, including a workbench 1. A lower chamber 101 and an upper chamber 102 are arranged inside the workbench 1. A U-shaped frame 3 is fixedly connected to the top of the workbench 1. A robotic arm 4 and an industrial camera 10 are installed on the lower side of the U-shaped frame 3. Two positioning frames 2 are symmetrically arranged on the upper side of the workbench 1. A set of clamping mechanisms 6 are arranged on the side of each of the two positioning frames 2 close to each other. A reverse movement mechanism 7 is arranged inside the upper chamber 102. The reverse movement mechanism 7 drives the two positioning frames 2 to approach each other, and then drives the two sets of clamping mechanisms 6 to clamp and fix the workpiece. A pneumatic mechanism 8 is arranged inside the lower chamber 101. The pneumatic mechanism 8 adjusts the air pressure inside the clamping mechanism 6 to ensure stable clamping.

[0031] Each set of clamping mechanisms 6 includes a main chamber shell 601, a sealing cover 602, a number of air distribution cylinders 603, a second sealing ring 609, an air inlet 6010, and a number of sets of telescopic components. The main chamber shell 601 is fixedly connected to the end of the positioning frame 2. The sealing cover 602 is fixedly connected to the side of the main chamber shell 601. A number of air distribution cylinders 603 are all fixedly connected to the side of the sealing cover 602. A number of small holes are opened in the main chamber shell 601 corresponding to the positions of the air distribution cylinders 603. The second sealing ring 609 is fitted and installed between the main chamber shell 601 and the sealing cover 602. The air inlet 6010 is fixedly connected to the side of the main chamber shell 601 close to the positioning frame 2. A number of sets of telescopic components correspond to the air distribution cylinders 603 one by one, and each set of telescopic components is used to adapt to the different shapes of the workpiece.

[0032] Each set of telescopic components includes a micro spring 604, a slider 605, a first sealing ring 606, a protruding rod 607, and a rubber ball 608. The micro spring 604 and the slider 605 are both arranged inside the air distribution cylinder 603. The first sealing ring 606 is fitted and installed on the circumferential surface of the slider 605. One end of the protruding rod 607 is fixedly connected to the slider 605, and the other end penetrates through the air distribution cylinder 603 and extends to the outside. The rubber ball 608 is fixedly connected to the end of the protruding rod 607.

[0033] In this embodiment, it should be specifically noted that: The workbench 1 is the basic carrier of the equipment, and its internal is designed with an upper and lower layered cavity. The lower chamber 101 is located at the bottom layer inside the workbench 1 and is used to install the pneumatic mechanism 8, which includes air source components such as an air pump 801 and a three-way pipe 802. Compressed air is conveyed to the clamping mechanism 6 through an air pipe 803. The upper chamber 102 is located at the upper layer inside the workbench 1 and is used to install the reverse movement mechanism 7. The double-threaded lead screw 703 is rotated by a servo motor 704, and finally the synchronous reverse movement of the two side positioning frames 2 is realized. The U-shaped frame 3 forms the support frame of the processing area. The manipulator 4 and the industrial camera 10 are installed on the lower side through bolts or buckles. The end of the manipulator 4 is connected to the processing tool 5 to perform operations such as deburring and polishing. The industrial camera 10 is used to capture the position image of the workpiece to assist the vision positioning system in calibrating the clamping and processing paths. A set of clamping mechanisms 6 are fixed at the ends of the positioning frames 2. When the reverse movement mechanism 7 drives the two positioning frames 2 to move in the reverse direction, the two side clamping mechanisms 6 approach the workpiece synchronously, and the full-profile clamping is realized through the adaptive deformation of the telescopic component; The main cavity shell 601 and the sealing cover 602 are made of aluminum alloy or engineering plastic, and the surface is anodized to improve wear resistance. The main cavity shell 601 is fixed to the end of the positioning frame 2 by bolts, and several small holes are opened corresponding to the position of the air distribution cylinder 603 for introducing air pressure into the inside of the air distribution cylinder 603. The sealing cover 602 is matched with the second sealing ring 609 to prevent air pressure leakage and ensure the stable driving force of the telescopic component. The number of air distribution cylinders 603 is set to several, which is set according to the size of the workpiece. The whole is a cylindrical barrel fixed on the outside of the sealing cover 602, and the inside is a hollow cavity, which is connected to the air duct of the main cavity shell 601 through small holes and serves as the installation carrier of the telescopic component, providing the support force for the extension rod 607 through the internal air pressure change. The air inlet 6010 is a quick-connect air pipe joint, which is connected to the three-way pipe 802 of the pneumatic mechanism 8 through an air pipe 803 to realize the branched supply of the air source; In each telescopic component, one end of the micro spring 604 abuts against the bottom of the air distribution cylinder 603, and the other end abuts against the slider 605. When in the natural state, the extension rod 607 is kept in the initial extended state to provide a reset elastic force. The slider 605 is made of wear-resistant engineering plastic, and the surface is covered with a first sealing ring 606 to provide sealing performance, and it is slidably and hermetically matched with the inner wall of the air distribution cylinder. The surface of the extension rod 607 is smooth, and it is matched with the guide hole at the top of the air distribution cylinder 603 to ensure the movement accuracy. Silicone or polyurethane, which has high elasticity and wear resistance, deforms when contacting the surface of the workpiece, fills the concave and convex contours, such as the curved surface and groove of the earphone shell, expands the clamping contact area, and at the same time avoids damaging the workpiece through flexible contact.

[0034] The main difference between this embodiment and the prior art lies in that a spring and air pressure collaborative adaptive clamping mechanism and a closed-loop pressure control system are adopted in this embodiment. Specifically, in the initial state without air supply, the micro spring 604 is in a natural elongation state, pushing the slider 605 and the extending rod 607 to extend outwards, and the rubber ball 608 maintains the maximum extension position. In the stage of contacting the workpiece, the positioning frame 2 moves to make the rubber ball 608 contact the workpiece. If there is a depression on the surface of the workpiece, the extending rod 607 continues to extend without obstruction, and the micro spring 604 stretches and stores energy. If the surface of the workpiece is convex, the extending rod 607 is pressed and retracts, and the micro spring 604 compresses and stores energy. The slider 605 moves towards the bottom of the air distribution cylinder 603. At this time, the air pressure is adjusted, and low-pressure gas is introduced into the air distribution cylinder 603 through the air pressure mechanism 8 to form an air cushion in the air distribution cylinder, offsetting part of the spring force and reducing the effective stiffness of the micro spring 604. In the depression area, since the micro spring 604 stores a large amount of energy due to stretching, after the air pressure offsets part of the elastic force, the rubber ball 608 fits against the bottom of the depression with a smaller force. In the convex area, since the micro spring 604 stores less energy due to compression, the air pressure provides an auxiliary supporting force to prevent the rubber ball 608 from detaching from the convex surface. Regardless of the shape of the workpiece surface, the rubber balls 608 of each telescopic assembly fit against the workpiece with a constant contact force, achieving "shape adaptability and force uniformity". After the air pressure stabilizes, the spring force and the air pressure form a dynamic balance, and the rubber ball 608 maintains the fit through flexible deformation, while allowing small displacements of the workpiece to avoid stress concentration caused by rigid clamping. The "spring active + air pressure passive" force control mode is adopted, without the need to precisely control the displacement of the extending rod, and only the contact force is adjusted through the air pressure, simplifying the complexity of the control system. The air pressure, as a "flexible damping", can absorb the vibration impact during the processing, avoiding the workpiece cracking caused by sudden external forces in traditional rigid clamping, being able to adapt to workpieces of different shapes and expanding the scope of use.

[0035] The above structure is the main structure of this embodiment, which solves the processing and fixing problem caused by the shape of the workpiece in the prior art. The extending rod 607, the rubber ball 608, etc. are existing structures. The specific structure and connection method of the reverse movement mechanism 7 are not specifically described in this embodiment. In addition, how the air pressure mechanism 8 outputs gas also belongs to the prior art. Therefore, this application does not make a detailed limitation.

[0036] Referring to FIGS. 3 and Figure 5 , the reverse movement mechanism 7 includes a slide rail frame 701, a lead screw sleeve 702, a double-threaded lead screw 703, and a servo motor 704. The slide rail frame 701 is fixedly connected inside the upper chamber 102. There are two symmetrically arranged lead screw sleeves 702, which are both slidably connected inside the slide rail frame 701. The double-threaded lead screw 703 is rotatably connected between the inner walls of the slide rail frame 701. The two lead screw sleeves 702 are respectively threadedly connected to different threads of the double-threaded lead screw 703. The servo motor 704 is fixedly connected to one end of the slide rail frame 701, and the output end of the servo motor 704 is fixedly connected to the double-threaded lead screw 703.

[0037] In this embodiment, it should be specifically noted that: the slide rail frame 701 is made of high-strength aluminum alloy or cast iron and is fixed to the inner wall of the upper chamber 102 by bolts. As the support frame of the whole mechanism, two parallel sliding tracks are machined inside to restrict the moving direction of the lead screw sleeve 702 and ensure the linear motion accuracy. Two lead screw sleeves 702 are symmetrically arranged, located on the left and right sides of the slide rail frame 701 respectively, and are only allowed to move linearly along the track direction. The upper part is fixedly connected to the reinforcing rod 201 by bolts to transfer the motion of the lead screw sleeve 702 to the positioning frame 2. The two lead screw sleeves 702 are respectively meshed with the left and right threaded sections of the double-threaded lead screw 703 to ensure the reverse movement of the lead screw sleeve 702. The middle part of the rod body of the double-threaded lead screw 703 is a smooth shaft, and left-handed and right-handed threads are respectively machined at both ends to form a reverse lead screw structure. The output shaft of the servo motor 704 is directly connected to the double-threaded lead screw 703 through a coupling. By driving the double-threaded lead screw 703 to rotate forward and backward, the two lead screw sleeves 702 are driven to move in the reverse direction, and finally the two positioning frames 2 are driven to move in the reverse direction to realize the function of clamping the workpiece, and micro-meter level displacement control can be achieved to meet the strict requirements of precision machining for the clamping position.

[0038] Refer to Figure 5 , on the side where the two positioning frames 2 are close to each other, reinforcing rods 201 are fixedly connected, and the two reinforcing rods 201 are respectively fixedly connected to the tops of the corresponding lead screw sleeves 702.

[0039] In this embodiment, it should be specifically noted that: the reinforcing rod 201 is made of high-strength aluminum alloy or steel part, and its surface is treated with blackening for rust prevention. As the connection hub between the positioning frame 2 and the lead screw sleeve 702, it transmits the driving force of the reverse movement.

[0040] Refer to Figure 10 , the pneumatic mechanism 8 includes an air pump 801, a three-way pipe 802 and air pipes 803. The air pump 801 is fixedly connected in the lower chamber 101. One end of the three-way pipe 802 is fixedly connected to the output end of the air pump 801. There are two air pipes 803, one end of each is connected to the three-way pipe 802, and the other end is respectively connected to the corresponding air inlet 6010 and a micro spring 604 is installed.

[0041] In this embodiment, it should be specifically noted that: the air pump 801 adopts a micro diaphragm pump or a screw type air pump, and is fixed to the bottom of the lower chamber 101 by bolts. As the core of the air source, it provides compressed air of 0.1 - 0.5 MPa, and is connected to the control system to receive the air pressure adjustment instruction. One end of the three-way pipe 802 is hermetically connected to the air outlet of the air pump 801, and the other end is divided into two branch interfaces, which are respectively connected to the two air pipes 803 to realize the branched supply of the air source. During operation, the compressed air output by the air pump 801 is evenly distributed to the clamping mechanisms 6 on both sides to ensure the synchronous adjustment of the air pressure on both sides.

[0042] Reference Figures 6 - 8 On the upper side of the main cavity housing 601, a pressure sensor 9 is provided, and the pressure sensor 9 is electrically connected to the control system of the pneumatic mechanism 8.

[0043] In this embodiment, it should be specifically noted that: The pressure sensor 9 is a thin-film type or strain-gauge type sensor, which is fixed to the center of the top surface of the main cavity housing 601 by screws, ensuring that its sensing area is aligned with the force transmission path of the lower telescopic assembly, and can directly monitor the comprehensive stress transmitted from the telescopic assembly to the main cavity housing, avoiding the force transmission lag caused by the flexible deformation of the rubber ball 608, ensuring that the measured value truly reflects the clamping force state, and the data is fed back to the control system to dynamically adjust the air valve 804 of the pneumatic mechanism 8. For example, when a certain group of rubber balls 608 are under greater pressure due to the protrusion of the workpiece, the system automatically reduces the air pressure of the corresponding air cylinder, reduces the effective force of the spring, and avoids local overload. It can cooperate with the industrial camera 10 to capture the external shape data of the workpiece, predict the clamping force requirements of each area in advance, and pre-adjust the air pressure to achieve "predictive self-adaptation".

[0044] Reference Figure 4 On the workbench 1, a sewage discharge mechanism 11 is provided. The sewage discharge mechanism 11 includes a central table 1101, a contraction cavity 1102, and an outlet pipe 1103. The central table 1101 is arranged at the center of the top of the workbench 1, the contraction cavity 1102 is arranged below the central table 1101 and communicates with the outlet pipe 1103, and the outlet pipe 1103 penetrates through the bottom of the workbench 1 for discharging processing debris and waste liquid.

[0045] In this embodiment, it should be specifically noted that: The central table 1101 is made of stainless steel or high-strength engineering plastic, and its surface is treated with anti-slip and wear-resistant treatment. It is in the shape of a disc or a square platform structure, arranged at the center of the top of the workbench 1, and is fixed to the workbench 1 by welding or bolts. Its surface is slightly lower than the top plane of the workbench 1, forming a certain sunken area, so that the debris and waste liquid generated during the processing can naturally converge towards the center, facilitating subsequent collection. Positioning grooves or adsorption devices can be arranged on the surface of the central table 1101 to assist in workpiece positioning and prevent the workpiece from shifting during processing. The contraction cavity 1102 is located below the central table 1101, in the shape of a funnel or a frustum of a cone with a wider top and a narrower bottom. The cavity wall is smooth and the inclination angle is optimized to ensure that the debris and waste liquid can slide down smoothly. The contraction cavity 1102 communicates with the bottom of the central table 1101, and the two can be integrally formed or connected by a sealing flange to ensure the sealing performance of the connection and prevent waste liquid leakage. Through the reduced-diameter design, the flow rate of the debris and waste liquid is increased, and the risk of blockage is reduced; at the same time, it plays a role in initially crushing and guiding larger-volume debris, enabling it to smoothly enter the subsequent pipeline. The outlet pipe 1103 is made of corrosion-resistant PVC or metal pipe, and discharges the debris and waste liquid preliminarily treated by the contraction cavity from the equipment to achieve centralized treatment of processing waste.

[0046] Reference Figure 4, the end of the robotic arm 4 is detachably connected to the machining tool 5 and the nozzle 12. The nozzle 12 is connected to a cleaning air source for purging the residues on the workpiece surface.

[0047] In this embodiment, it should be specifically noted that: the end of the robotic arm 4 adopts a modular quick-change interface, such as a hydraulic quick-connect fitting or a mechanical snap-in interface. For the machining tool 5 and the nozzle 12, corresponding specifications of mating interfaces are designed respectively to ensure convenient and rapid installation and disassembly. For example, the hydraulic quick-connect fitting can achieve automatic connection and disconnection through a hydraulic locking device, and the replacement time is shortened to several seconds; the mechanical snap-in interface realizes the quick loading and unloading of tools by rotating or pressing the snap. The nozzle 12 is connected to an independent cleaning air source through a high-pressure air pipe. The air source can adopt a compressed air storage tank or an air compressor to ensure sufficient purging force. When the cleaning air source is turned on, the high-pressure gas sprays out at high speed through the nozzle, forming a strong air flow. The air flow impacts the workpiece surface, blowing away impurities such as chips, dust, and coolant residues from the machining, and making them fall into the sewage disposal mechanism 11 to complete the cleaning process.

[0048] The working principle of the present invention: The main problems solved in this embodiment are: by using a spring and air pressure collaborative self-adaptive clamping mechanism and a closed-loop pressure control system, aiming at the characteristics of the complex shape of the Bluetooth headset shell with curved surfaces, convex points and other irregular contours, the problems of easy rotation and easy dropping caused by small contact area in the traditional clamping method are solved, and stable clamping of the entire contour is achieved; by using the air pressure adjustable design, the problems that the traditional clamping depends on the worker's experience or open-loop control, and it is easy to damage the thin-shell workpiece due to excessive clamping force, or the workpiece slides due to insufficient force are solved.

[0049] The specific steps are as follows: S1. Equipment preparation stage: S101 Workpiece pre-positioning: Place the Bluetooth headset shell to be machined on the central table 1101 of the workbench 1. The workpiece is in the middle position between the two clamping mechanisms 6. Start the industrial camera 10 to take an image of the workpiece shape, analyze the workpiece contour data through the vision positioning system, and generate a clamping path and air pressure pre-adjustment parameters. S102 Clamping mechanism initialization: Drive the double-threaded lead screw 703 to rotate through the servo motor 704, drive the two lead screw sleeves 702, the reinforcement rod 201 and the positioning frame 2 in the reverse principle, so that the two clamping mechanisms 6 move outward to the maximum opening position to make room for placing the workpiece. S2. Workpiece clamping stage: S201 Adaptive fitting: The servo motor 704 drives the two positioning frames 2 to approach each other synchronously until the rubber ball 608 contacts the surface of the workpiece. If there is a depression on the workpiece surface, the rubber ball 608 continues to extend without obstruction, and the micro spring 604 stretches and stores energy. If there is a protrusion on the workpiece surface, the rubber ball 608 is compressed and retracted, and the micro spring 604 is compressed and stores energy. The slider 605 moves towards the bottom of the air distribution cylinder 603; S202 Air pressure regulation and force control closed-loop: The pressure sensor 9 monitors the comprehensive stress of the main cavity housing 601 in real time, and the data is fed back to the control system. The control system adjusts the internal air pressure from the main cavity housing 601 to the air distribution cylinder 603 according to the workpiece contour data and the real-time stress value. Low-pressure gas is introduced into the depressed area to offset part of the spring force, so that the rubber ball 608 fits the bottom of the depression with a smaller force. Auxiliary air pressure support is increased in the protruding area to prevent the rubber ball 608 from detaching from the protruding surface. Finally, the rubber balls 608 of each telescopic component fit the entire contour of the workpiece with a constant contact force, and the spring force and air pressure form a dynamic balance to ensure stable clamping and no stress concentration.

[0050] S3. Machining execution stage: According to the machining requirements, the machining tool 5 is replaced through the quick-change interface at the end of the robotic arm 4, and the position of the tool is calibrated by the industrial camera 10 to ensure the accuracy of the machining path. The robotic arm 4 drives the machining tool 5 to perform fine processing on the workpiece according to the preset program. During the process, the industrial camera 10 monitors the machining progress and the position of the workpiece in real time. If there is an offset, the compensation mechanism is automatically triggered. The chips and waste liquid generated during machining fall into the shrinkage cavity 1102 and are discharged from the equipment through the outlet pipe 1103 to achieve centralized waste treatment; S4. Workpiece cleaning and unloading stage: After machining, the nozzle 12 is connected to the cleaning air source to perform high-pressure blowing on the chips and dust remaining on the surface of the workpiece. The impurities fall into the sewage discharge mechanism 11 and are discharged. The air pressure mechanism 8 releases the air pressure in the air distribution cylinder 603, and the micro spring 604 resets to drive the rubber ball 608 to reset. The reverse movement mechanism 7 drives the two positioning frames 2 to move away from each other, releases the workpiece, and takes out the machined Bluetooth headset housing to complete a machining cycle. The system automatically stores parameters such as the clamping air pressure and tool path of workpieces of different models, which can be directly called during the next machining to improve production efficiency.

[0051] The above are only the preferred embodiments of the present invention and are not used to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An intelligent processing device for the shell of a Bluetooth headset, including a workbench (1), characterized in that: A lower chamber (101) and an upper chamber (102) are arranged inside the workbench (1). A U-shaped frame (3) is fixedly connected to the top of the workbench (1). A robotic arm (4) and an industrial camera (10) are installed on the lower side of the U-shaped frame (3). Two positioning frames (2) are symmetrically arranged on the upper side of the workbench (1). A set of clamping mechanisms (6) is arranged on each side of the two positioning frames (2) close to each other. A reverse movement mechanism (7) is arranged inside the upper chamber (102). The reverse movement mechanism (7) drives the two positioning frames (2) to approach each other, and then drives the two sets of clamping mechanisms (6) to clamp and fix the workpiece. A pneumatic mechanism (8) is arranged inside the lower chamber (101). The pneumatic mechanism (8) adjusts the air pressure inside the clamping mechanism (6) to ensure stable clamping. Each set of the clamping mechanisms (6) includes a main chamber shell (601), a sealing cover (602), a plurality of air distribution cylinders (603), a second sealing ring (609), an air inlet (6010), and a plurality of sets of telescopic components. The main chamber shell (601) is fixedly connected to the end of the positioning frame (2). The sealing cover (602) is fixedly connected to the side of the main chamber shell (601). A plurality of air distribution cylinders (603) are fixedly connected to the side of the sealing cover (602). A plurality of small holes are opened in the main chamber shell (601) corresponding to the positions of the air distribution cylinders (603). The second sealing ring (609) is fitted and installed between the main chamber shell (601) and the sealing cover (602). The air inlet (6010) is fixedly connected to the side of the main chamber shell (601) close to the positioning frame (2). A plurality of sets of telescopic components correspond to the air distribution cylinders (603) one by one, and each set of telescopic components is used to adapt to different shapes of the workpiece.

2. The intelligent processing device for the shell of a Bluetooth headset according to claim 1, wherein: Each set of the telescopic components includes a micro spring (604), a slider (605), a first sealing ring (606), an extension rod (607), and a rubber ball (608). The micro spring (604) and the slider (605) are both arranged inside the air distribution cylinder (603). The first sealing ring (606) is fitted and installed on the circumferential surface of the slider (605). One end of the extension rod (607) is fixedly connected to the slider (605), and the other end passes through the air distribution cylinder (603) and extends to the outside. The rubber ball (608) is fixedly connected to the end of the extension rod (607).

3. An intelligent processing device for the shell of a Bluetooth headset according to claim 1, characterized in that: The reverse movement mechanism (7) includes a slide rail frame (701), a lead screw sleeve (702), a double-threaded lead screw (703), and a servo motor (704). The slide rail frame (701) is fixedly connected inside the upper chamber (102). Two lead screw sleeves (702) are symmetrically arranged, and they are both slidably connected inside the slide rail frame (701). The double-threaded lead screw (703) is rotatably connected between the inner walls of the slide rail frame (701). The two lead screw sleeves (702) are respectively threadedly connected to different threads of the double-threaded lead screw (703). The servo motor (704) is fixedly connected to one end of the slide rail frame (701), and the output end of the servo motor (704) is fixedly connected to the double-threaded lead screw (703).

4. An intelligent processing device for the shell of a Bluetooth headset according to claim 3, characterized in that: On the side where the two positioning frames (2) are close to each other, a reinforcing rod (201) is fixedly connected, and the two reinforcing rods (201) are respectively fixedly connected to the top of the corresponding lead screw sleeve (702).

5. An intelligent processing device for a Bluetooth headset shell according to claim 4, characterized in that: The pneumatic mechanism (8) includes an air pump (801), a three-way pipe (802) and an air pipe (803). The air pump (801) is fixedly connected in the lower chamber (101). One end of the three-way pipe (802) is fixedly connected to the output end of the air pump (801). There are two air pipes (803). One end of each is connected to the three-way pipe (802), and the other end is respectively connected to the corresponding air inlet (6010) and an air valve (804) is installed.

6. An intelligent processing device for the shell of a Bluetooth headset according to claim 5, characterized in that: A pressure sensor (9) is provided on the upper side of the main chamber shell (601), and the pressure sensor (9) is electrically connected to the control system of the pneumatic mechanism (8).

7. An intelligent processing device for the shell of a Bluetooth headset according to claim 6, characterized in that: A sewage discharge mechanism (11) is provided on the workbench (1). The sewage discharge mechanism (11) includes a central table (1101), a contraction chamber (1102) and an outlet pipe (1103). The central table (1101) is arranged at the center of the top of the workbench (1). The contraction chamber (1102) is arranged below the central table (1101) and communicates with the outlet pipe (1103). The outlet pipe (1103) penetrates through the bottom of the workbench (1) and is used for discharging processing debris and waste liquid.

8. An intelligent processing device for the shell of a Bluetooth headset according to claim 7, characterized in that: The end of the robotic arm (4) is detachably connected to a processing tool (5) and a nozzle (12). The nozzle (12) is connected to a cleaning air source and is used for blowing the residue on the surface of the workpiece.

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