Linear switch button automatic assembling system and assembling method

Abstract

The invention discloses an automatic linear switch button assembling system and method. The automatic linear switch button assembling system comprises an assembling table, and an assembling sliding way is arranged on the surface of the assembling table; the basic part feeding working group, the sealing ring supplying and feeding mechanism, the screw feeding and mounting mechanism and the protective cover feeding and assembling mechanism are sequentially arranged along the assembling slide way; the shifting assemblies are arranged between the adjacent stations and used for transferring workpieces between the adjacent stations; the at least one reversing mechanism is connected with the assembly stations at different angles. The basic part feeding station set comprises a cylinder feeding mechanism, an iron sheet feeding mechanism, a gasket feeding mechanism, a color top cover plate feeding mechanism and a base connecting frame feeding mechanism. All the mechanisms are independent of one another to complete corresponding tasks respectively, the current workpiece is sequentially conveyed backwards through the displacement assembly installed on the assembly table, and workpiece machining circulation is achieved. According to the automatic assembly system and method, efficient and accurate assembly is achieved, the product consistency is improved, and multi-specification rapid remodeling production is supported.

Description

Technical Field

[0001] The present invention relates to the technical field of automation equipment, and particularly to a linear switch button automatic assembly system and an assembly method. Background Art

[0002] Pushbutton switches are one of the most common electronic components in production and life, and are also key components indispensable in electromechanical equipment. With the continuous improvement of technology and automation level, pushbutton switches are rapidly developing towards the direction of miniaturization, modularization, intelligence, and multi-functionality.

[0003] There are many parts in the button, and at least more than ten processes are required. The assembly process is complex. With the continuous development of automation and intelligent technologies, exploring an automated production device mode has become the only way for button production enterprises. Due to the large number of button parts and steps and diverse requirements, the current research on it mainly focuses on aspects such as button life, diversity, automatic feeding of parts, assembly fluency, and feasibility.

[0004] Aiming at the problems of a large variety of parts and a complex assembly process in the button assembly process, the traditional manual assembly mode has problems such as low production efficiency, high labor cost, unstable product quality, poor consistency, and high labor cost. Therefore, there is an urgent need for a linear switch button automatic assembly system and an assembly method. Summary of the Invention

[0005] Aiming at the deficiencies of the prior art, the present invention discloses a linear switch button automatic assembly system and an assembly method to solve the problems raised in the above background art.

[0006] To achieve the above object, the present invention provides the following technical solution: A linear switch button automatic assembly system includes an assembly table, and an assembly slideway is provided on the surface of the assembly table; a basic component feeding workgroup, a sealing ring supply and feeding mechanism, a screw feeding and installation mechanism, and a protective cover feeding and assembly mechanism arranged in sequence along the assembly slideway; a shifting component arranged between adjacent workstations for transferring workpieces between adjacent workstations; at least one reversing mechanism connecting assembly workstations at different angles, and the basic component feeding workstation group includes a cylinder feeding mechanism, an iron sheet feeding mechanism, a gasket feeding mechanism, a color top cover plate feeding mechanism, and a base connection frame feeding mechanism;

[0007] Each mechanism is independent and completes its corresponding task, and is connected and installed with other mechanisms front and back. The shifting component installed on the assembly table is used to sequentially transfer the current workpiece backward to realize the processing and flow of the workpiece.

[0008] Preferably, the sealing ring feeding and loading mechanism includes a sealing ring feeding turntable provided with four 90° annularly arrayed storage rods. The storage rods are sequentially inserted at intervals of 90° on the sealing ring feeding turntable. The storage rods are of a vertically pluggable structure for accommodating the sealing rings. The discharging servo at the lower end on one side of the sealing ring feeding turntable drives the sealing ring discharging fork at the upper end through a ball screw to push the sealing ring. Each stroke is equal to the thickness of the sealing ring. The sealing ring turntable servo provided at the lower end of the sealing ring feeding turntable drives the sealing ring feeding turntable to rotate. The sealing ring up-down cylinder on the other side of the sealing ring feeding turntable is connected in series with a right-angle rotating cylinder to form a picking and placing mechanism. A vacuum-controlled annular flat suction cup is installed at the end of the right-angle rotating cylinder. After adsorbing the sealing ring through the provided vacuum generator, the sealing ring is accurately placed at the installation position at the bottom outside of the cylinder through the lifting of the sealing ring up-down cylinder and the horizontal rotation of the right-angle rotating cylinder.

[0009] Preferably, a first photoelectric sensor is provided on the sealing ring feeding tray for detecting whether there is a lack of sealing rings on the current storage rod. When a material shortage signal is detected, it triggers the sealing ring turntable servo to drive the sealing ring feeding turntable to rotate 90° to the next station. When a lack of sealing rings is detected, the discharging fork retracts, the sealing ring feeding turntable rotates one grid, and then the discharging fork extends again to continue feeding.

[0010] Preferably, the screw feeding and installing mechanism includes a screw feeding mechanism and a screw tightening mechanism for installing the discharged screws on both sides of the button.

[0011] The screw feeding mechanism includes a screw feeding vibrating disk, a pushing plate, and a feeding cylinder. The upper end of the pushing plate is provided with an A / B double-station feeding port and corresponding a / b discharging ports at the bottom. The discharging ports are connected to the screw feeding nozzle at the end of the feeding cylinder installed on one side of the screw feeding mechanism through hoses. The feeding cylinder initially remains extended. One reciprocating telescopic action of the feeding cylinder respectively pushes out two screws. The discharging ports are provided with blowing ports to implement intermittent pulsed air flow for auxiliary conveying. The pushing plate is controlled by the feeding cylinder (initially in the extended state). The screw feeding vibrating disk uses the provided feeding chute to queue up the screws to the feeding port in sequence.

[0012] The screw tightening mechanism includes a screw servo motor and a screw tightening cylinder. The output shaft of the screw servo motor is equipped with a bit and operates at a torque control mode with a threshold of 0.87 Nm. After the two feeding cylinders on both sides send the double screws to both sides of the button respectively, the bits are driven by the screw tightening cylinders on both sides to complete the tightening operation.

[0013] Preferably, a second photoelectric sensor is provided at the end of the feeding chute. When the second photoelectric sensor detects that there is material at the A / B station, the A screw slides down through the a port by a retracting action, and the B screw is output through the b port by an extending action.

[0014] Preferably, a flipping and reversing mechanism is provided at the lower end of the screw tightening mechanism, including a cylindrical flip clamp with a U-shaped opening inside and a flip servo. The flip clamp is tangentially connected to the assembly slides laid on both sides. When the button enters, it is driven by the flip servo provided on one side of the assembly slide to rotate 180° to achieve double-sided processing positioning.

[0015] Preferably, the protective cover feeding and assembly mechanism comprises a protective cover feeding mechanism and a protective cover installation mechanism;

[0016] The shield feeding mechanism comprises a shield turntable servo, a feeding servo and a shield feeding turntable. The shield turntable servo drives the shield feeding turntable. The feeding rod at the upper end of the shield feeding turntable has four circular holes evenly distributed around the circumference. The shield discharging fork vertically penetrates the circular holes and is lifted and lowered by the feeding servo. The shield is lifted step by step with the shield discharging fork to complete the single-piece separation. The shield discharging fork moves up the single-piece height stroke each time the material is taken.

[0017] The protective cover installation mechanism includes an installation servo, upper and lower cylinders of the protective cover, and left and right cylinders of the protective cover. The installation servo adopts a torque control mode to drive the protective cover to be rotated to the button. The upper and lower cylinders of the protective cover and the left and right cylinders of the protective cover cooperate to adjust the installation posture. The protective cover turntable servo and the feeding servo adopt a position control mode to achieve precise stroke positioning.

[0018] Preferably, a third photoelectric sensor is provided on one side of the protective cover feeding turntable. When the third photoelectric sensor detects that the feeding rod is out of material, the protective cover turntable servo drives the protective cover feeding turntable to rotate one grid to replenish material.

[0019] Preferably, the shift component is arranged on the surface of the assembly table through a base base provided at the lower end, and comprises a front and rear moving unit composed of front and rear cylinders, front and rear plates, and front and rear slide rails, and a left and right moving unit composed of left and right shift cylinders, left and right plates, and left and right slide rails; a plurality of clamping cylinders and clamping jaws are installed on the upper part of the left and right plates, and their bottoms are connected to the front and rear cylinders through the front and rear slide rails to realize front and rear displacement, and the left and right plates are integrally installed on the left and right slide rails of the base and driven by the left and right shift cylinders to move laterally; the component is provided with nine clamping jaws equidistantly distributed along the assembly slideway corresponding to each assembly station; the action sequence is: after the clamping jaws release the workpiece, the front and rear cylinders retract and return to their original positions, and then the left and right shift cylinders retract to their initial positions, and after the associated mechanism completes the operation, the front and rear cylinders drive the clamping jaws to extend forward to clamp the workpieces of all stations, and the left and right shift cylinders extend synchronously to transfer the workpieces along the assembly slideway to the next process; the action interval delay parameters of each cylinder are programmable to realize process coordinated control.

[0020] The present invention also provides an assembly method of a linear switch button automatic assembly system, comprising the following steps:

[0021] S1. First, reset the assembly system. Then, set the processing quantity and prepare the assembly parts, which include a cylinder, a sealing ring, an iron sheet, a base connection frame, screws, washers, a color top cover plate, and a protective cover.

[0022] S2. The front-section cylinder is automatically fed by a vibrating bowl and conveyed to the sealing-ring assembly station through a shifting component mechanism.

[0023] S3. The sealing-ring feeding mechanism lifts the sealing rings up to the feeding position in sequence. Subsequently, under the action of an annular planar suction cup and a 90° rotating cylinder, the sealing rings are sleeved on the bottom outer circle of the cylinder. After the sealing-ring assembly is completed, the workpiece is conveyed forward to the next assembly station through the shifting component mechanism.

[0024] S4. The iron sheet and the base connection frame are fed and assembled by their respective feeding vibrating bowls. After the workpiece is rotated 90° by a 90° reversing mechanism, the workpiece is conveyed to the screw feeding position by the shifting component mechanism.

[0025] S5. The screws slide from both sides to the installation position through an air pipe by a screw feeding vibrating bowl. Subsequently, under the torque control mode of the servo motors on both sides, the screws are tightened into the holes of the base connection frame. After both sides of the screws are completed, the workpiece is conveyed forward to the workpiece turning and reversing position by the shifting component mechanism.

[0026] S6. The flipping clamp holds the workpiece. Subsequently, under the action of a flipping servo, the workpiece is rotated 180° for reversing. Then, the workpiece is conveyed forward to the washer feeding position by the shifting component mechanism. The washer and the color top cover plate are both fed by their respective feeding vibrating bowls, and then the washer is installed on the workpiece by a cylinder and a clamp. After the installation of the corresponding workpiece is completed, the workpiece is conveyed forward to the protective-cover feeding and assembly mechanism by the shifting component mechanism.

[0027] S7. The feeding servo and the protective-cover feeding turntable in the protective-cover feeding and assembly mechanism automatically provide the protective-cover parts for the clamp. Then, under the cooperation of an installation servo, a protective-cover up-and-down cylinder, and a protective-cover left-and-right cylinder, the protective cover is rotationally installed on the button.

[0028] S8. Continue to assemble the next button until the set quantity is assembled and then stop.

[0029] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0030] 1. In the present invention, through the modular mechanism collaborative control and intelligent commutation technology, integrating the core processes such as turntable material storage, vacuum suction cup picking and placing, double-station feeding, and torque control assembly, while achieving the deformation-preventing feeding of the sealing ring, the precise locking of screws without jamming or slipping, and the damage-free installation of the protective cover, a breakthrough integration of a 180° flipping and multi-axis rotation commutation mechanism is formed, resulting in a full-closed-loop intelligent assembly system covering automatic part feeding, double-sided processing, spatial alignment, and continuous flow, significantly improving the efficiency, yield rate, and process compatibility of precision electronic component assembly, effectively eliminating the efficiency bottleneck and quality fluctuation caused by manual assembly, not only making the product consistency reach the industrial standard, but also constructing an intelligent assembly system adaptable to the rapid changeover production of multi-specification buttons through linear slideway progression and photoelectric sensing closed-loop control. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The drawings are used to provide a further understanding of the present invention, and constitute a part of the specification, and are used to explain the present invention together with the embodiments of the present invention, and do not constitute a limitation to the present invention.

[0032] In the drawings:

[0033] Figure 1 is a schematic diagram of the automatic assembly process flow of the button;

[0034] Figure 2 is a schematic diagram of the structure of a linear switch button automatic assembly system of the present invention;

[0035] Figure 3 is a schematic diagram of the structure of a linear switch button automatic assembly system of the present invention from another perspective;

[0036] Figure 4 is a schematic diagram of the structure of the sealing ring supply and feeding mechanism of the present invention;

[0037] Figure 5 is a schematic diagram of the structure of the screw feeding mechanism of the present invention;

[0038] Figure 6 is a schematic diagram of the structure of the screw feeding action process of the present invention;

[0039] Figure 7 is a schematic diagram of the structure of the screw tightening mechanism of the present invention;

[0040] Figure 8 is a schematic diagram of the structure of the protective cover feeding and assembling mechanism of the present invention;

[0041] Figure 9 is a schematic diagram of the structure of the shifting component mechanism of the present invention;

[0042] Figure 10 is a schematic diagram of the action execution step process of the shifting component of the present invention;

[0043] Figure 11 is the hardware schematic diagram of the button automatic assembly system of the present invention;

[0044] Figure 12 is the step - flow schematic diagram of the assembly method of the button automatic assembly system of the present invention;

[0045] Figure 13 is the framework schematic diagram of the host computer monitoring platform of the present invention;

[0046] Figure 14 is the schematic diagram of the interface of the button interaction application monitoring platform of the present invention;

[0047] Reference numerals in the figure: 1. Sealing ring supply and feeding mechanism; 101. Storage rod; 102. Sealing ring feeding turntable; 103. Discharge servo; 104. Sealing ring discharge fork; 105. Sealing ring turntable servo; 106. Sealing ring up - down cylinder; 107. Right - angle rotating cylinder; 108. Ring - shaped planar suction cup; 109. First photoelectric sensor; 2. Screw feeding and installation mechanism; 201. Screw feeding vibrating disk; 202. Pushing plate; 203. Feeding cylinder; 204. Feeding chute; 205. Screw servo motor; 206. Screw tightening cylinder; 207. Feeding cylinder; 208. Second photoelectric sensor; 3. Protective cover feeding and assembling mechanism; 301. Feeding servo; 302. Protective cover feeding turntable; 303. Feeding rod; 304. Installation servo; 305. Protective cover up - down cylinder; 306. Protective cover left - right cylinder; 307. Protective cover turntable servo; 308. Third photoelectric sensor; 309. Protective cover discharge fork; 4. Shifting component; 401. Front - rear cylinder; 402. Front - rear plates; 403. Front - rear slide rails; 404. Shifting left - right cylinder; 405. Left - right plates; 406. Left - right slide rails; 407. Claw cylinder; 408. Claw; 409. Base pedestal; 5. Turning and reversing mechanism; 501. Turning clamp; 502. Turning servo; 6. Assembly table; 601. Assembly chute; 7. Cylinder feeding mechanism; 8. Iron sheet feeding mechanism; 9. Gasket feeding mechanism; 10. Color top cover plate feeding mechanism; 11. Base connection frame feeding mechanism. Specific embodiments

[0048] The following describes the preferred embodiments of the present invention with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are only for the purpose of illustration and explanation of the present invention, and are not used to limit the present invention.

[0049] Embodiment: As Figures 1 - 3As shown in the figure, a linear switch button automatic assembly system includes an assembly table 6, and an assembly slideway 601 is provided on the surface of the assembly table 6; a basic component feeding workgroup, a sealing ring feeding mechanism 1, a screw feeding and installing mechanism 2, and a protective cover feeding and assembling mechanism 3 are sequentially arranged along the assembly slideway 601; a shifting component 4 is arranged between adjacent workstations for transferring workpieces between adjacent workstations; at least one reversing mechanism is connected to assembly workstations at different angles. The basic component feeding workstation group includes a cylinder feeding mechanism 7, an iron sheet feeding mechanism 8, a gasket feeding mechanism 9, a color top cover plate feeding mechanism 10, and a base connecting frame feeding mechanism 11; each mechanism is independent and completes its corresponding task respectively, and is installed in connection with other mechanisms front and back. The shifting component 4 installed on the assembly table 6 is used to sequentially transfer the current workpiece backward to realize the processing and flow of the workpiece.

[0050] The sealing ring is an annular and retractable rubber part, which plays a role of sealing and buffering protection in the button. According to the characteristics of the sealing ring at the feeding position of the cylinder, the sealing ring feeding mechanism 1 set in this application is as Figure 4 shown, and it includes a sealing ring feeding turntable 102 provided with four 90° annular array storage rods 101. The storage rods 101 are sequentially inserted at intervals of 90° on the sealing ring feeding turntable 102. The storage rods 101 are of a vertically pluggable structure for accommodating the sealing rings; the discharging servo 103 at the lower end on one side of the sealing ring feeding turntable 102 drives the sealing ring discharging fork 104 at the upper end through a ball screw to push the sealing ring, and each stroke is equal to the thickness of the sealing ring; the sealing ring turntable servo 105 provided at the lower end of the sealing ring feeding turntable 102 drives the sealing ring feeding turntable 102 to rotate; the sealing ring up and down cylinder 106 and the right-angle rotary cylinder 107 on the other side of the sealing ring feeding turntable 102 are connected in series to form a picking and placing mechanism. A vacuum-controlled annular flat suction cup 108 is installed at the end of the right-angle rotary cylinder 107. After adsorbing the sealing ring through the provided vacuum generator, the sealing ring is accurately placed at the installation position at the bottom outside of the cylinder through the lifting of the sealing ring up and down cylinder 106 and the horizontal rotation of the right-angle rotary cylinder 107. A first photoelectric sensor 109 is provided on the sealing ring feeding turntable to detect whether there is a lack of sealing rings on the current storage rod 101. When a material shortage signal is detected, the sealing ring turntable servo 105 is triggered to drive the sealing ring feeding turntable 102 to rotate 90° to a new position; when a lack of sealing rings is detected, the discharging fork retracts, the sealing ring feeding turntable 102 rotates one grid, and then the discharging fork extends again to continue feeding.

[0051] Specifically, the sealing rings are stored in the discharging rod (the storage rod 101 can be pulled out) and are inserted on the sealing ring feeding turntable 102 at intervals of 90°. The discharging servo 103 drives the discharging fork to push the sealing ring upward through a ball screw nut pair, moving upward by a distance equal to the thickness of one sealing ring each time. After the sealing ring upper and lower cylinders 106 are lifted first, the right-angle rotating cylinder 107 drives the annular planar suction cup 108 to suck away the sealing ring and then place it on the bottom of the outer side of the cylinder. When the first photoelectric sensor 109 detects that there is a lack of sealing ring on the current storage rod 101, the sealing ring discharging fork 104 retracts, the sealing ring feeding turntable 102 rotates one grid, and then the sealing ring discharging fork 104 extends again to continue feeding. The annular planar suction cup 108 is controlled by a vacuum generator to generate vacuum to suck the sealing ring and break the vacuum to release the sealing ring. This ingenious feeding and loading method of the sealing ring overcomes the problems of easy deformation of the sealing ring and unstable loading and installation.

[0052] As Figures 5 - 7 shown, the screw feeding and installing mechanism 2 includes a screw feeding mechanism and a screw tightening mechanism, which are used to install the discharged screws on both sides of the button;

[0053] The screw feeding mechanism includes a screw feeding vibrating disk 201, a pushing plate 202 and a feeding cylinder 203; there are A / B double-station feeding ports at the upper end of the pushing plate 202 and corresponding a / b discharging ports at the bottom. The sizes of the two screw feeding ports at the upper end of the pushing plate 202 are adapted to the screw sizes, and there are corresponding two screw discharging ports at the bottom; the discharging ports are connected to the screw feeding nozzles at the end of the feeding cylinder 207 installed on one side of the screw feeding mechanism through hoses. Initially, the feeding cylinder 203 remains in the extended state. One reciprocating telescopic action of the feeding cylinder 203 respectively pushes out two screws. There is a blowing port at the discharging port to implement intermittent pulsed air flow-assisted conveying. The pushing plate 202 is controlled by the feeding cylinder 203 (initially in the extended state). The screw feeding vibrating disk 201 uses the provided feeding chute 204 to queue up the screws and feed them to the feeding ports in turn. There is a second photoelectric sensor 208 at the end of the feeding chute 204. When the second photoelectric sensor 208 detects that there is material, the feeding cylinder 203 retracts. At this time, the screw at A slides from the discharging port a to the screw feeding nozzle through the hose. At this time, another screw is fed to B. When the second photoelectric sensor 208 detects that there is material, the feeding cylinder 203 extends to slide the screw at B from the b chute to the other feeding nozzle. One reciprocating telescopic action of the feeding cylinder 203 respectively pushes out two screws. In order to ensure the smooth sliding of the screws in the pipeline, blowing ports are also installed at the two discharging ports. When a screw drops, intermittent on-off blowing is carried out into the pipeline to accelerate feeding. The screw feeding operation process is as Figure 6 shown, and the overall process includes the following:

[0054] Screw feeding and initial detection: Screws are fed into the feeding port through the screw feeding vibrating bowl 201, and the second photoelectric sensor 208 detects whether there are screws in the feeding port. If no screws are detected, continuous waiting for feeding is carried out, and the situation of screws in the feeding port is continuously detected; if screws are detected, proceed to the next step. The first feeding action: The feeding cylinder 203 drives the pushing plate 202 to retract, and the screw at point A slides from the discharge port a to the screw feeding nozzle through the hose. The second detection: The second photoelectric sensor 208 detects again whether there are screws in the feeding port. If no screws are detected, continue to wait for feeding; if screws are detected, proceed to the next step. The second feeding action: The feeding cylinder 203 drives the pushing plate 202 to extend, and the screw at point B is sent from the chute at b to the other feeding nozzle. Thus, one feeding cycle is completed, and one reciprocating telescopic action of the feeding cylinder 203 respectively pushes out two screws. Blowing-assisted feeding: At the blowing ports at the two discharge ports, when screws fall, air is blown into the pipeline at an intermittent on-off frequency of 2Hz / 3 times to accelerate the sliding of the screws in the pipeline and ensure smooth feeding. The process ends.

[0055] The screw tightening mechanism includes a screw servo motor 205 and a screw tightening cylinder 206. The output shaft of the screw servo motor 205 is equipped with a bit and operates at a threshold of 0.87 Nm in the torque control mode. On the premise of tightening the screw, it is ensured that the screw does not slip. The feeding cylinders 207 on both sides respectively send the double screws to both sides of the button, and then the bit is driven by the screw tightening cylinders 206 on both sides to complete the tightening operation.

[0056] Specifically, the screw feeding nozzle is installed on the feeding cylinder 207 and is responsible for sending the screws to both sides of the button; the screw servo motor 205 is installed on the screw tightening cylinder 206, and a bit is installed on the shaft of the screw servo motor 205 to cooperate with tightening the screw. When screws are sent, the feeding cylinder 207 extends, first sends the screws to both sides of the button, and then after the screw tightening cylinder 206 extends in place, the screw servo motor 205 tightens the screw on the button. Finally, the screw servo motor 205 stops rotating, after the screw tightening cylinder 206 retracts, the feeding cylinder 207 retracts, and one screw tightening task is completed.

[0057] Among them, as Figure 7 shown, a turnover and orientation mechanism 5 is provided at the lower end of the screw tightening mechanism, including a cylindrical turnover clamp 501 with a U-shaped opening inside and a turnover servo 502. The turnover clamp 501 is tangentially connected to the assembly chutes 601 laid on both sides. When the button enters, it is driven by the turnover servo 502 provided on one side of the assembly chute 601 to rotate 180° to achieve double-sided processing positioning.

[0058] As Figure 8 shown, the protective cover feeding and assembling mechanism 3 includes a protective cover feeding mechanism and a protective cover installing mechanism;

[0059] The protective cover feeding mechanism includes a protective cover turntable servo 307, a feeding servo 301, and a protective cover feeding turntable 302. The protective cover turntable servo 307 drives the protective cover feeding turntable 302. Four circular holes are circumferentially and evenly distributed on the feeding rod 303 at the upper end of the protective cover feeding turntable 302. The protective cover discharging fork 309 vertically penetrates the circular holes and its lifting is controlled by the feeding servo 301. The protective cover is gradually lifted by the protective cover discharging fork 309 to complete single-piece separation. Each time a material is taken, the protective cover discharging fork 309 moves up by a single-piece height stroke. A third photoelectric sensor 308 is provided on one side of the protective cover feeding turntable 302. When the third photoelectric sensor 308 detects a lack of material in the feeding rod 303, the protective cover turntable servo 307 drives the protective cover feeding turntable 302 to rotate one grid for replenishment. The protective cover installation mechanism includes an installation servo 304, a protective cover up-and-down air cylinder 305, and a protective cover left-and-right air cylinder 306. The installation servo 304 drives the protective cover to be screwed onto the button in a torque control mode. The protective cover up-and-down air cylinder 305 and the protective cover left-and-right air cylinder 306 cooperate to adjust the installation position and posture. The protective cover turntable servo 307 and the feeding servo 301 use a position control mode to achieve precise stroke positioning.

[0060] Specifically, the feeding servo 301 at the bottom and the protective cover feeding turntable 302 are used to automatically provide the protective cover parts for the gripper. Then, with the cooperation of the installation servo 304, the protective cover up-and-down air cylinder 305, and the protective cover left-and-right air cylinder 306, the protective cover is rotationally installed on the button. The protective cover discharging fork 309 passes through the four circular holes around the feeding rod 303 on the protective cover feeding turntable 302 from the bottom upwards. Under the action of the feeding servo 301, the protective covers are successively pushed upwards for transmission. Each time a protective cover is taken away, the discharging fork moves up by the height distance of one protective cover. If the third photoelectric sensor 308 detects a lack of material in the current feeding rod 303, the protective cover feeding turntable 302 rotates one grid.

[0061] Such as Figure 9As shown, the shift assembly 4 is arranged on the surface of the assembly table 6 through a base pedestal 409 provided at the lower end, and the front and rear moving unit is composed of a front and rear cylinder 401, a front and rear plate 402, and a front and rear slide rail 403, and the left and right moving unit is composed of a shift left and right cylinder 404, a left and right plate 405, and a left and right slide rail 406; a plurality of clamping claw cylinders 407 and clamping claws 408 are installed on the upper part of the left and right plates 405, and the bottom thereof is connected to the front and rear cylinders 401 through the front and rear slide rails 403 to realize the front and rear displacement, and the left and right plates 405 are integrally installed on the left and right slide rails 406 of the base pedestal 409. The upper and lower parts are driven by the shifting left and right cylinders 404 to move horizontally; the component is provided with nine clamps 408 which are evenly distributed along the assembly slide 601 corresponding to each assembly station; the action sequence is: after the clamps 408 release the workpiece, the front and rear cylinders 401 retract and return to their original positions, and then the shifting left and right cylinders 404 retract to their initial positions, and after the associated mechanism completes the operation, the front and rear cylinders 401 drive the clamps 408 to extend forward to clamp the workpieces of all stations, and the shifting left and right cylinders 404 extend synchronously to transfer the workpieces along the assembly slide 601 to the next process; the action interval delay parameters of each cylinder can be programmably set to realize process collaborative control.

[0062] Specifically, the steps of the shifting component 4 are as follows: Figure 10 As shown, the shifting and flipping action starts from the entrance. First, all the jaws 408 are released, retracted backward and then moved to the left. Then, it is determined whether the grasping mechanism has completed the action. If not, the operation of releasing, retracting and moving the jaws 408 to the left is repeated. If completed, the front and rear cylinders 401 are finally extended, and then each jaw cylinder 407 controls the jaws 408 to clamp the workpiece. Finally, the left and right cylinders 404 are extended to push the workpiece forward, and the action ends here.

[0063] like Figure 11 As shown, the main program of the system includes: based on the action execution requirements of the mechanical structure of the button automatic assembly and the hardware system of the control system, the main software program of the system is designed to realize the functions of automatic loading, assembly, circulation and unloading of the installed parts. It mainly includes the loading of the front cylinder, the loading and assembly of the sealing ring, the loading and assembly of the iron sheet, the loading and assembly of the base connection frame, the loading and installation of the screws, the turning and direction of the workpiece, the loading and installation of the gasket, the loading and assembly of the color top cover, and the loading, assembly and unloading of the protective cover.

[0064] like Figure 12 As shown, the present invention also provides an assembly method of a linear switch button automatic assembly system, the specific steps comprising:

[0065] The initialization and reset of the control system are the basis for ensuring the safe and normal operation of the equipment, covering the reset operations of both hardware and software. It mainly includes the reset of mechanical structures such as servo motors and cylinders, as well as the restoration of system software parameters to their initial states or factory settings. Special attention should be paid to avoiding mechanical collisions during the reset process. After the reset is completed, set the processing quantity and prepare the assembled parts, and then the feeding vibrating bowls and assembly equipment can be started.

[0066] (1) The front-section cylinder is automatically fed by the vibrating bowl. When the corresponding photoelectric sensor detects that there is material at the feeding position, the pushing cylinder pushes it out and waits for the mechanism of the shifting component 4 to move it forward to the sealing ring assembly station.

[0067] (2) The sealing ring supply mechanism lifts the sealing rings up to the feeding position in sequence. Then, under the action of the annular planar suction cup 108 and the 90° right-angle rotary cylinder 107, the sealing rings are sleeved on the bottom of the outer circle of the cylinder. After the sealing ring assembly is completed, the mechanism of the shifting component 4 conveys the workpiece forward to the iron sheet assembly station.

[0068] (3) The iron sheets are fed by the feeding vibrating bowl, and then the XYZ three-axis linkage cylinder and the gripper install the iron sheets on the workpiece. After the iron sheet assembly is completed, the mechanism of the shifting component 4 conveys the workpiece forward to the base connection frame assembly station.

[0069] (4) The base connection frame is fed by the feeding vibrating bowl, and then the frequency conversion motor conveys it to the feeding position. When the corresponding photoelectric sensor detects that there is material, it is installed on the workpiece under the cooperation of the cylinder and the gripper. After the base connection frame assembly is completed, the mechanism of the shifting component 4 conveys the workpiece forward to the workpiece position rotation station.

[0070] (5) The function of rotating the workpiece by 90° is to facilitate the installation of screws in the next process. The upper and lower cylinders, the servo motor, and two metal rods are used to rotate the workpiece by 90° from both sides of the diagonal positions of the workpiece. After the workpiece rotation is completed, the mechanism of the shifting component 4 conveys the workpiece forward to the screw feeding position.

[0071] (6) The screws are fed by the feeding vibrating bowl and slide down from both sides through the air pipe to the installation position. Then, the two-side screw servo motor 205 tightens the screws in the holes of the base connection frame in the torque control mode. After both sides of the screws are completed, the mechanism of the shifting component 4 conveys the workpiece forward to the workpiece flip and reverse position.

[0072] (7) The gripper 408 holds the workpiece, and then under the action of the flipping servo 502, the workpiece is rotated 180° for commutation. The purpose of the workpiece flip and commutation is to facilitate the installation of other parts on the other side of the workpiece. After the workpiece rotation and commutation are completed, the mechanism of the shifting component 4 conveys the workpiece forward to the gasket feeding position.

[0073] (8) The gasket and the color top cover plate are supplied by their respective feeding vibrating bowls, and then the gasket is installed on the workpiece by the air cylinder and the gripper. After each installation of the corresponding workpiece, the workpiece is conveyed forward by the shifting component 4 mechanism.

[0074] (9) The protective cover is pushed up to a fixed position in sequence by its feeding mechanism, then transferred to directly above the workpiece by the gripper, and finally tightened into the thread under the torque control mode of the installed servo 304. Thus, the installation of all parts of one button is completed. Under the cooperation of the above mechanisms and the discharging chute, it falls for discharging.

[0075] (10) Continue to assemble the next button until the set number of assemblies is completed and then stop.

[0076] Among them, as Figure 13 shown, the software of the PLC and the host computer is the core of the entire system design, which determines the function realization and operation efficiency of the system. The operation of the control system device is mainly completed on the on-site human-machine interface and the host computer monitoring platform. Among them, the monitoring platform is the center of the control system, and its functions mainly include the selection of control modes, log recording, task work order system, data report recording and analysis, observation and warning, and the framework design of the host computer monitoring platform.

[0077] The on-site touch screen is used in conjunction with the host computer monitoring platform. The functions of the touch screen mainly include: The main interface mainly includes the setting of the processing quantity and the display of the processed quantity, the display of the part feeding status, the response display window of the I / O input and output ports, the setting box of control parameters, the menu bar, the operation mode selection window, the real-time data and real-time curve, and the alarm bar and other main information. Through the control system built based on the PLC, touch screen and host computer, the sensor information and control signals are controlled, adjusted and observed in real time.

[0078] Among them, as Figure 14 shown, according to the convenience of on-site operation, on the basis of the framework structure of the monitoring platform, a main interface of the button interaction application monitoring platform is set up. The main interface mainly includes: information related to the operator shift and processing batch, the assembly operation status of each station, the part feeding status, the selection button of the operation mode, and the switching button to other interfaces. After each mechanism completes its corresponding action, the corresponding note status changes to green. If it is not completed within the set time range, the system will give an alarm prompt. In addition, when the parts are out of stock, the system will give an alarm prompt to remind the staff to replenish the materials in time. After selecting the processing mode and resetting each mechanism, click Start to run automatically, and the progress bar will display the current processing progress in real time.

[0079] Finally, it should be noted that the above are only preferred examples of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or perform equivalent replacements for some of the technical features. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. An automatic assembly system for a linear switch button, characterized in that: It includes an assembly table, on the surface of which there is an assembly slideway; a basic component feeding workgroup, a sealing ring feeding mechanism, a screw feeding and installing mechanism, and a protective cover feeding and assembling mechanism arranged in sequence along the assembly slideway; a shifting component arranged between adjacent workstations for transferring workpieces between adjacent workstations; at least one reversing mechanism connecting assembly workstations at different angles. The basic component feeding workgroup includes a cylinder feeding mechanism, an iron sheet feeding mechanism, a gasket feeding mechanism, a color top cover plate feeding mechanism, and a base connecting frame feeding mechanism. Each mechanism is independent and completes its corresponding task respectively, and is installed together in a front-to-back connection with other mechanisms. The shifting component installed on the assembly table is used to sequentially transfer the current workpiece backward to realize the processing and flow of the workpiece.

2. The automatic assembly system for a linear switch button according to claim 1, wherein: The sealing ring feeding mechanism includes a sealing ring feeding turntable provided with four 90° annular array storage rods. The storage rods are sequentially inserted at intervals of 90° on the sealing ring feeding turntable. The storage rods are of a vertically pluggable structure for accommodating sealing rings. At the lower end on one side of the sealing ring feeding turntable, the sealing ring discharging fork at the upper end of the discharging servo drive pushes the sealing ring, and each stroke is equal to the thickness of the sealing ring. The sealing ring turntable servo drive provided at the lower end of the sealing ring feeding turntable rotates the sealing ring feeding turntable. The sealing ring up-and-down cylinder and the right-angle rotating cylinder on the other side of the sealing ring feeding turntable are connected in series to form a picking and placing mechanism. A vacuum-controlled annular flat suction cup is installed at the end of the right-angle rotating cylinder. After adsorbing the sealing ring through the provided vacuum generator, the sealing ring is lifted by the sealing ring up-and-down cylinder and horizontally rotated by the right-angle rotating cylinder to accurately place the sealing ring at the bottom installation position outside the cylinder.

3. The automatic assembly system for a linear switch button according to claim 2, wherein: A first photoelectric sensor is provided on the sealing ring feeding turntable for detecting whether there is a lack of sealing rings on the current storage rod. When a material shortage signal is detected, it triggers the sealing ring turntable servo drive to rotate the sealing ring feeding turntable by 90° to a new station.

4. A linear switch button automatic assembly system according to claim 1, characterized in that: The screw feeding and installing mechanism includes a screw feeding mechanism and a screw tightening mechanism for installing the discharged screws on both sides of the button. The screw feeding mechanism includes a screw feeding vibrating disk, a pushing plate, and a feeding cylinder. The upper end of the pushing plate is provided with A / B double-station feeding ports, and a / a and b / b discharging ports are correspondingly arranged at the bottom. The discharging ports are connected to the screw feeding nozzle at the end of the feeding cylinder installed on one side of the screw feeding mechanism through hoses. The feeding cylinder initially remains in the extended state. One reciprocating telescopic action of the feeding cylinder respectively pushes out two screws. A blowing port is provided at the discharging port to implement intermittent pulsed air flow for auxiliary conveying. The pushing plate is controlled by the feeding cylinder. The screw feeding vibrating disk uses the provided feeding slideway to queue up the screws to the feeding ports in sequence. The screw tightening mechanism includes a screw servo motor and a screw tightening cylinder. After the feeding cylinders on both sides send the double screws to both sides of the button respectively, the screwdriver bits are driven by the screw tightening cylinders on both sides to complete the tightening operation.

5. The automatic assembly system for a linear switch button according to claim 4, wherein: A second photoelectric sensor is provided at the end of the feeding slideway. When the second photoelectric sensor detects that there is material at the A / B station, the A screw slides down through the a port by a retracting action, and the B screw is output through the b port by an extending action.

6. The automatic assembly system for a linear switch button according to claim 4, wherein: The lower end of the screw tightening mechanism is provided with a flipping and reversing mechanism, which includes a cylindrical flipping clamp with a U-shaped opening inside and a flipping servo. The flipping clamp is tangentially connected to the assembly slides laid on both sides. When the button enters, it is driven by the flipping servo provided on one side of the assembly slide to rotate 180° to achieve double-sided processing positioning.

7. A linear switch button automatic assembly system according to claim 1, characterized in that: The protective cover feeding and assembling mechanism includes a protective cover feeding mechanism and a protective cover installing mechanism; The protective cover feeding mechanism includes a protective cover turntable servo, a feeding servo, and a protective cover feeding turntable. The protective cover turntable servo drives the protective cover feeding turntable. Four circular holes are circumferentially distributed on the feeding rod at the upper end of the protective cover feeding turntable. The protective cover discharging fork vertically penetrates the circular holes and is controlled by the feeding servo to lift and lower. The protective cover is gradually lifted by the protective cover discharging fork to complete single-piece separation. Each time a material is taken, the protective cover discharging fork moves up a single-piece height stroke; The protective cover installing mechanism includes an installing servo, a protective cover up-and-down cylinder, and a protective cover left-and-right cylinder. The installing servo drives the protective cover to be screwed onto the button in a torque control mode. The protective cover up-and-down cylinder and the protective cover left-and-right cylinder cooperate to adjust the installation position and posture. The protective cover turntable servo and the feeding servo use a position control mode to achieve precise stroke positioning.

8. A linear switch button automatic assembly system according to claim 7, characterized in that: A third photoelectric sensor is provided on one side of the protective cover feeding turntable. When the third photoelectric sensor detects that the feeding rod is out of material, the protective cover turntable servo drives the protective cover feeding turntable to rotate one grid for replenishing material.

9. The automatic assembly system for a linear switch button according to claim 1, wherein: The shifting assembly is arranged on the surface of the assembly table through the base pedestal provided at the lower end, including a front-and-back moving unit composed of a front-and-back cylinder, front-and-back plates, and front-and-back slide rails, and a left-and-right moving unit composed of a shifting left-and-right cylinder, left-and-right plates, and left-and-right slide rails; a number of clamping cylinders and clamps are installed on the upper part of the left-and-right plates, and their bottoms are connected to the front-and-back cylinder through the front-and-back slide rails to achieve front-and-back displacement. The left-and-right plates are integrally installed on the left-and-right slide rails of the base pedestal and are driven by the shifting left-and-right cylinder to move horizontally.

10. An assembly method of a linear switch button automatic assembly system according to any one of claims 1-9, characterized in that, It includes the following steps: S1. First, reset the assembly system, then set the processing quantity and prepare the assembly parts. The assembly parts include a cylinder, a sealing ring, an iron sheet, a base connecting frame, a screw, a gasket, a color top cover plate, and a protective cover; S2. The front-section cylinder is automatically fed through a vibrating bowl and is conveyed to the sealing ring assembling station through the shifting assembly mechanism; S3. The sealing ring feeding and loading mechanism sequentially lifts the sealing rings to the loading position. Subsequently, under the action of an annular planar suction cup and a 90° rotating cylinder, the sealing rings are sleeved on the bottom outer circle of the cylinder. After the sealing ring assembly is completed, the workpiece is conveyed forward to the next assembly station through the shifting assembly mechanism; S4. The iron sheet and the base connecting frame are fed and assembled by their respective feeding vibrating bowls. After the workpiece is rotated 90° by a 90° reversing mechanism, the workpiece is conveyed to the screw feeding position by the shifting assembly mechanism; S5. The screws slide from both sides to the installation position through an air pipe from the screw feeding vibrating bowl. Subsequently, under the torque control mode of the servo motors on both sides, the screws are tightened into the holes of the base connecting frame; after both screws on both sides are completed, the workpiece is conveyed forward to the workpiece flipping and reversing position by the shifting assembly mechanism; S6. The flipping clamp holds the workpiece. Then, under the action of the flipping servo, the workpiece is rotated 180° to change its direction. After that, the shifting component mechanism conveys the workpiece forward to the gasket feeding position. The gasket and the color top cover plate are supplied by their respective feeding vibrating bowls, and then the gasket is installed on the workpiece. After the installation of the corresponding workpiece is completed, the shifting component mechanism conveys the workpiece forward to the protective cover feeding and assembling mechanism. S7. The feeding servo and the protective cover feeding turntable in the protective cover feeding and assembling mechanism provide the protective cover parts. Then, under the cooperation of the installation servo, the upper and lower cylinders of the protective cover, and the left and right cylinders of the protective cover, the protective cover is rotationally installed on the button. S8. Continue to assemble the next button until the set number of assemblies is completed and then stop.

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