Silencer flexible assembly line

Abstract

The present application belongs to the technical field of muffler production equipment, and relates to a flexible muffler assembly line, comprising: a lower shell assembly structure, which comprises a lower shell feeding assembly for providing a lower shell and a partition plate feeding assembly for providing a partition plate, and can assemble the partition plate and the lower shell into a lower shell assembly; an upper cover assembly structure, which comprises an upper cover feeding assembly for providing an upper cover, a filter screen feeding assembly for providing a filter screen, and a steel wire feeding assembly for providing a steel ring, and can assemble the filter screen, the steel ring and the upper cover into an upper cover assembly; an upper cover and lower shell assembly structure for assembling the upper cover assembly and the lower shell assembly into a muffler; and a high-frequency welding structure for welding and fixing the upper cover assembly and the lower shell assembly of the muffler assembled by the upper cover and lower shell assembly structure. The assembly line can operate efficiently, can replace the original manual installation steps, improve the efficiency, and save the labor cost for enterprises.

Description

Technical Field

[0001] This invention belongs to the technical field of muffler production equipment and relates to a flexible assembly line for mufflers. Background Technology

[0002] As people pay more and more attention to noise, compressors are the main source of noise in appliances such as air conditioners and refrigerators. The role of silencers is to help reduce the noise of compressors.

[0003] The principle of a silencer is to use the sudden expansion or contraction of the pipe interface to prevent sound waves of certain frequencies propagating along the pipe from passing through the silencer, thereby achieving the purpose of noise reduction.

[0004] With increasing demand, the installation process for mufflers has become more complex, and the production speed of mufflers cannot keep up with the demand.

[0005] Currently, the demand for mufflers is increasing, but the market is still dominated by manual assembly, which cannot keep up with the production demand. There is an urgent need for a muffler assembly machine that can automatically assemble mufflers to increase work efficiency, increase muffler production, and reduce labor costs. As there is currently no similar machine on the market and no reference equipment, there may be room for improvement. Summary of the Invention

[0006] To address the aforementioned problems, this invention provides a flexible assembly line for mufflers that can operate efficiently and reduce production costs.

[0007] According to the technical solution of the present invention: a flexible assembly line for mufflers, characterized in that it comprises:

[0008] The lower shell assembly structure includes a lower shell feeding assembly for providing the lower shell and a partition feeding assembly for providing the partition, and is capable of assembling the partition and the lower shell into a lower shell assembly.

[0009] The top cover assembly structure includes a top cover feeding assembly for providing the top cover, a filter screen feeding assembly for providing the filter screen, and a wire feeding assembly for providing the wire ring, and is capable of assembling the filter screen, the wire ring, and the top cover into a top cover assembly.

[0010] The upper cover and lower shell assembly structure is used to assemble the upper cover assembly and the lower shell assembly into a muffler;

[0011] The high-frequency welding structure is used to weld and fix the upper cover assembly and the lower shell assembly of the muffler.

[0012] As a further improvement of the present invention, the lower shell assembly structure includes a lower shell feeding elevator, the discharge end of which is connected to a lower shell feeder, and the lower shell feeder supplies the lower shell to the lower shell assembly turntable assembly.

[0013] It also includes a partition feeding elevator, the discharge end of which is connected to the feed end of a partition feeder, which supplies partitions to the turntable assembly mounted on the lower shell.

[0014] The lower shell assembly turntable assembly assembles the partition into the lower shell.

[0015] As a further improvement of the present invention, the lower shell assembly turntable assembly includes a turntable driven by a workstation indexing table, and a stationary disk is coaxially arranged above the turntable. When the turntable rotates, the stationary disk is stationary.

[0016] Four positioning fixtures are evenly distributed along the circumference on the upper surface of the turntable. A partition direct vibration feeding track and a lower shell direct vibration feeding track are provided on the outer side of the turntable. The partition direct vibration feeding track and the lower shell direct vibration feeding track are arranged at 90-degree intervals to provide partitions and lower shells to the turntable respectively, so that the partitions are installed in the lower shell during operation.

[0017] The stationary disk is uniformly equipped with a lower shell picking robot, a partition picking robot, a partition assembly NG unloading robot, and a partition combination unloading robot along the circumferential direction. The lower shell picking robot is used to pick up and place the lower shells that have been conveyed to the position on the lower shell direct vibration feeding track onto the corresponding positioning fixture. The partition picking robot is used to pick up and place the partitions that have been conveyed to the position on the partition direct vibration feeding track into the lower shell. The partition assembly NG unloading robot is used to remove the lower shells that have not been equipped with partitions. The partition combination unloading robot is used to transfer the partitions and lower shells that have been moved to the position to the next work station.

[0018] As a further improvement of the present invention, the lower shell material handling robot, the partition material handling robot, the partition assembly unloading robot, and the partition combination unloading robot all include a translation cylinder, a lifting cylinder is installed at the piston rod end of the translation cylinder, a rotary cylinder is installed at the piston rod end of the lifting cylinder, and a gripper cylinder is installed on the rotary part of the rotary cylinder.

[0019] The lower shell material handling robot, the partition material handling robot, the partition assembly unloading robot, and the partition combination unloading robot are each mounted on a stationary disk via a bracket. The bracket includes a lower bracket, and a support plate is vertically fixed on the top plate of the lower bracket. The mounting seat of the translation cylinder is fixed on the top plate of the lower bracket, and the piston rod of the translation cylinder passes through the guide hole of the support plate and is fixedly connected to the lifting cylinder.

[0020] The top of the support plate is fixed with a mounting bracket, on which a solenoid valve island is installed to control the movements of the lower shell material handling robot, the partition material handling robot, the partition assembly unloading robot, and the partition combination unloading robot.

[0021] The mounting bracket is a frame structure, and a mounting plate is provided on the surface of the frame structure for mounting the solenoid valve island;

[0022] A hydraulic damper is installed on the support plate to buffer the resetting of the lifting cylinder;

[0023] The partition assembly NG unloading robot is equipped with a photoelectric sensor on its lower support to detect whether the lower shell is equipped with a partition.

[0024] The turntable has multiple weight-reducing holes evenly distributed in a circular pattern. The weight-reducing holes are circular. The top surface of the positioning fixture has a receiving cavity to hold the lower shell. The side wall of the receiving cavity has a slot extending in the vertical direction.

[0025] As a further improvement of the present invention, the upper cover assembly structure includes an upper cover feeding elevator, the discharge end of the upper cover feeding elevator is connected to the inlet end of the upper cover feeder, and the upper cover feeder provides the upper cover to the upper cover assembly turntable assembly.

[0026] It also includes a filter screen feeding module and a flexible steel wire feeding assembly. The filter screen feeding module provides a filter screen to the upper cover assembly turntable assembly, and the flexible steel wire feeding assembly provides steel wire to the upper cover assembly turntable assembly. The upper cover assembly turntable assembly assembles the filter screen and steel wire into the upper cover.

[0027] As a further improvement of the present invention, the upper cover assembly turntable assembly includes a turntable driven by an indexing table, wherein a stationary disk is fixedly disposed on the inner ring of the turntable;

[0028] The upper surface of the turntable is evenly distributed with at least four positioning seats in a circular shape to place the muffler cover. The first pressure plate, the second pressure plate, the wire pressing robot, and the cover picking robot are installed sequentially at 90-degree intervals along the circumference of the stationary plate.

[0029] The first pressure plate and the second pressure plate extend radially to the top of the positioning seat, and the pressing ends of the first pressure plate and the second pressure plate are respectively provided with hot riveting grooves;

[0030] The upper cover material handling robot includes a horizontal push cylinder, which is mounted on a stationary plate. A lifting cylinder is installed at the piston rod end of the horizontal push cylinder, and a gripper cylinder is installed at the piston rod end of the lifting cylinder.

[0031] Eight positioning seats are evenly distributed around the circumference of the turntable; each positioning seat has a positioning groove for placing the muffler cover; the positioning seat has an opening on the outer side of the upper end corresponding to the positioning groove; an electromagnetic valve island is installed on the stationary plate, which controls the movement of the horizontal push cylinder, the lifting cylinder, and the gripper cylinder; multiple weight-reducing holes are evenly distributed around the turntable; hydraulic buffers are installed on both sides of the horizontal push cylinder to buffer the lifting cylinder when it returns to its horizontal position.

[0032] As a further improvement of the present invention, the flexible wire feeding assembly includes a feeding conveyor line, a direct vibration feeding bin, and a vibrating feeding plate. The discharge end of the feeding conveyor line is connected to the inlet end of the direct vibration feeding bin, and the inlet end of the direct vibration feeding bin is connected to the vibrating feeding plate. An industrial camera is installed above the vibrating feeding plate to monitor the working condition of the vibrating feeding plate.

[0033] A material handling robot is set up next to the vibrating feeding tray to transfer the steel wire on the vibrating feeding tray to the next work station;

[0034] The feeding conveyor line includes a support frame, with a driven shaft rotatably mounted at one end of the support frame and a drive shaft rotatably mounted at the other end. The drive shaft is driven by a drive motor mounted on the side of the support frame. A conveyor belt is tensioned on the drive shaft and the driven shaft. Baffle plates are fixed on both sides of the upper surface of the support frame along the width direction.

[0035] The discharge end of the direct vibration hopper is equipped with an adjustable feeding guide plate, and the discharge end of the feeding guide plate is rotatably connected to a dropping plate.

[0036] The discharge end of the direct vibration hopper is provided with waist-shaped grooves on both sides, and the discharge guide plate is fixedly connected to the waist-shaped grooves by bolts;

[0037] The blanking plate has an arc-shaped hole, and a round hole is provided below the arc-shaped hole. The arc-shaped hole and the round hole of the blanking plate are respectively connected to the blanking guide plate by bolts.

[0038] Vibration isolation is installed below the vibrating feeding plate, and the vibration isolation support is located inside the workshop;

[0039] The discharge side of the direct vibration feeding bin is vertically equipped with a camera mounting column, and a camera mounting plate is installed at the upper end of the camera mounting column. The industrial camera is mounted on the camera mounting plate.

[0040] The material handling robot is mounted next to the vibrating feeding tray via a robot mounting base; the working end of the material handling robot is equipped with a material handling gripper, which can be raised, lowered, and rotated.

[0041] The filter screen feeding module includes a filter screen feeding bin, with a filter screen feeding chute fixed at the upper inlet of the filter screen feeding bin, and a flexible vibrating plate provided at the outlet of the filter screen feeding bin to receive the discharge from the filter screen feeding bin;

[0042] A material handling robot is set up next to the flexible vibrating plate, and the execution end of the material handling robot is equipped with a material handling gripper.

[0043] An industrial camera is installed above the flexible vibratory feeder to monitor its operating condition.

[0044] The flexible vibratory feeder is supported on the workbench by vibration isolation fixtures; a camera column is installed on one side of the discharge end of the filter replenishment bin, and a camera mounting bracket is installed on the camera column, with the industrial camera mounted on the camera mounting bracket; a cover is rotatably installed at the inlet of the filter replenishment bin, and a handle is fixed on the cover; the filter replenishment chute is inclinedly supported on the filter replenishment bin by a bracket, and the discharge end of the filter replenishment chute has a tapered section; the discharge end of the filter replenishment bin is fixedly connected to a discharge guide chute, and the filter replenishment bin has a corresponding section... A switch plate is slidably fitted at the connection point. The opening and closing of the discharge guide chute is controlled by adjusting the height of the switch plate. The inner end of the discharge guide chute extends into the filter screen replenishment bin to receive the filter screens falling from the feed inlet of the filter screen replenishment bin. The filter screen replenishment bin contains a hopper, and the discharge port at the lower end of the hopper is directly opposite the discharge guide chute. The discharge guide chute is driven to vibrate by a vibrator installed inside the filter screen replenishment bin. The picking gripper can move up and down relative to the execution end of the picking robot. The picking gripper is connected to the execution end of the picking robot through a fixing block.

[0045] As a further improvement of the present invention, the upper cover and lower shell assembly structure includes a work station indexing table, a stationary disk is fixed on the upper part of the work station indexing table, a turntable is rotatably arranged on the outer ring of the stationary disk, and several sets of pressing components are evenly distributed on the surface of the turntable to realize the pressing of the muffler. A positioning fixture is provided on the turntable for each set of pressing components, and the positioning fixture is used to support the muffler.

[0046] A set of unlocking cylinders is provided on the stationary disk for each set of clamping components, and the unlocking cylinders are used to unlock the clamping components;

[0047] The clamping assembly includes a bracket, a pressure block rotatably mounted on the bracket, a guide rod fixed on the pressure block, and both ends of the guide rod fitting into guide grooves on the bracket. The tail end of the pressure block is configured as an unlocking force-bearing part. The front end of the cylinder rod of the unlocking cylinder cooperates with the unlocking force-bearing part to unlock the pressure block. The front end of the pressure block is connected to the upper end of a tension spring, and the lower end of the tension spring is fixedly connected to the surface of the turntable. The guide groove is an arc-shaped groove. A vertically penetrating strip groove is formed on the pressure block, and a limiting rod is set in the strip groove. The upper end of the tension spring extends into the strip groove and connects to the limiting rod. The top of the positioning fixture has a limiting groove to accommodate the lower cover of the muffler, and the side of the positioning fixture has a pick-and-place groove. The clamping assembly has four sets, and the unlocking cylinder also has four sets. The unlocking cylinder is mounted on the stationary plate via a cylinder bracket.

[0048] As a further improvement of the present invention, the high-frequency welding structure includes two sets of high-frequency welding modules arranged in parallel. Each set of high-frequency welding modules includes a high-frequency welding machine. A pressing cylinder is installed on the top plate of the high-frequency welding machine. Linear bearings are symmetrically arranged on both sides of the pressing cylinder on the top plate of the high-frequency welding machine. The piston rod of the pressing cylinder passes through the top plate of the high-frequency welding machine and a pressure plate is installed at the piston rod end of the pressing cylinder. A guide shaft is fixed on the top surface of the pressure plate. The guide shaft cooperates with the linear bearing. A locking handwheel is threadedly connected to the pressure plate. The piston rod end of the pressing cylinder is connected to the pressure plate through a floating joint. The bottom surface of the pressure plate is connected to the lower shell clamping fixture through the locking handwheel.

[0049] A positioning fixture is set below the lower shell clamping fixture, and a gripper lifting cylinder is set below the positioning fixture. The gripper lifting cylinder drives the gripper cylinder to move up and down, so as to receive the muffler assembly transferred from the assembly transfer robot. The gripper lifting cylinder is installed on the fixed base plate, and the supporting bakelite board is supported on the fixed base plate by the supporting rod. The product detection sensor is installed on the supporting bakelite board.

[0050] As a further improvement of the present invention, a material unloading detection structure is provided on the material unloading side of the high-frequency welding structure, and a finished product transfer robot is provided between the high-frequency welding structure and the material unloading detection structure.

[0051] The material feeding and detection structure includes two sets of finished product cooling and storage modules arranged in parallel, and a transfer robot is set at each end between the two sets of finished product cooling and storage modules.

[0052] The discharge end of the finished product cooling and storage module is equipped with a pull-out test module and a weighing and conveying module, and a laser marking machine is installed next to the pull-out test module.

[0053] The pull-out test module includes a mounting base plate, a rotary cylinder mounted on one side of the surface of the mounting base plate, and a gripper cylinder mounted on the working end of the rotary cylinder.

[0054] A horizontal transfer cylinder is installed on the other side of the mounting base plate. A lifting cylinder is installed on the piston rod end of the horizontal transfer cylinder. The piston rod end of the lifting cylinder is connected to the upper end of the tension and compression sensor, and the lower end of the tension and compression sensor is connected to the clamping cylinder.

[0055] The piston rod end of the horizontal transfer cylinder is fixedly connected to the first mounting plate, the second mounting plate is fixedly connected to the first mounting plate, and the lifting cylinder is mounted on the second mounting plate.

[0056] The lifting cylinder adopts a side-mounted guide rail structure, and the piston rod of the lifting cylinder is connected to the horizontal part of the cylinder guide plate.

[0057] The clamping cylinder includes two cooperating jaw bases, each jaw base having a jaw fastened to its outer side, and a rubber pad fastened to the inner surface of the jaw.

[0058] The inner wall of the gripper is provided with a positioning step, the lower end of the gripper base abuts against the positioning step, and guide grooves are respectively provided on the positioning step corresponding to the two ends of the gripper base.

[0059] The stepped hole of the gripper is aligned with the threaded hole of the gripper base and then fixedly connected by bolts.

[0060] A defective product box is provided below the clamping cylinder. The horizontal transfer cylinder is supported and fixed on the mounting base plate by a support column. The defective product box is equipped with a material detection sensor. A rotary cylinder mounting plate is installed on the mounting base plate. The rotary cylinder mounting plate is fixed on the mounting base plate by a corner plate. The rotary cylinder is supported on the top surface of the corner plate, and the rotary cylinder is fixedly connected to the rotary cylinder mounting plate.

[0061] The technical advantages of this invention are as follows: the structure of this invention is reasonable and ingenious. In practical applications, it replaces the original manual installation steps, improves efficiency, and saves labor costs for enterprises. Attached Figure Description

[0062] Figure 1 This is the front view of the present invention.

[0063] Figure 2 This is a perspective view of the present invention.

[0064] Figure 3 This is a front view of the lower shell assembly turntable component in this invention.

[0065] Figure 4 for Figure 3 Top view.

[0066] Figure 5 for Figure 3 The left view.

[0067] Figure 6 for Figure 3 A 3D diagram.

[0068] Figure 7 This is a schematic diagram of the filter screen feeding module in this invention.

[0069] Figure 8 Front view of the turntable assembly for the top cover.

[0070] Figure 9 for Figure 8 Top view.

[0071] Figure 10 for Figure 8 A three-dimensional image.

[0072] Figure 11 This is a schematic diagram of the flexible wire feeding assembly in this invention.

[0073] Figure 12 This is a front view of the upper cover and lower shell assembly structure.

[0074] Figure 13 for Figure 12 Top view.

[0075] Figure 14 for Figure 12 The left view.

[0076] Figure 15 for Figure 12 A three-dimensional image.

[0077] Figure 16 This is the main view of the pull-out test module.

[0078] Figure 17 for Figure 16 Top view.

[0079] Figure 18 for Figure 16 The left view.

[0080] Figure 19 for Figure 16 A three-dimensional image.

[0081] Figure 20 for Figure 16 A magnified view of a portion of point A in the middle.

[0082] Figure 21 This is a schematic diagram of the high-frequency welding structure and the material cutting and inspection structure.

[0083] Figure 22 for Figure 21 A three-dimensional image.

[0084] Figure 23 This is the front view of the high-frequency welded structure.

[0085] Figure 24 for Figure 23 The left view. Detailed Implementation

[0086] The specific embodiments of the present invention will be further described below with reference to the accompanying drawings.

[0087] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. The described embodiments are merely some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.

[0088] like Figure 1-24 As shown, a flexible assembly line for mufflers includes:

[0089] The lower shell assembly structure 100 includes a lower shell feeding assembly for providing the lower shell and a partition feeding assembly for providing the partition, and is capable of assembling the partition and the lower shell into a lower shell assembly.

[0090] The cover assembly structure 200 includes a cover feeding assembly for providing the cover, a filter screen feeding assembly for providing the filter screen, and a wire feeding assembly for providing the wire ring, and is capable of assembling the filter screen, the wire ring, and the cover into a cover assembly.

[0091] The upper cover and lower shell assembly structure 300 is used to assemble the upper cover assembly and the lower shell assembly into a muffler;

[0092] The high-frequency welding structure 400 is used to weld and fix the muffler assembled by the upper cover and lower shell assembly structure 300 to the upper cover assembly and the lower shell assembly.

[0093] The lower shell assembly structure 100 includes a lower shell feeding elevator 110, the discharge end of which is connected to a lower shell feeder 120, which supplies the lower shell to the lower shell assembly turntable assembly 150.

[0094] It also includes a partition feeding elevator 130, the discharge end of which is connected to the feed end of a partition feeder 140, which supplies partitions to the lower shell assembly turntable assembly 150.

[0095] The lower shell assembly turntable assembly 150 assembles the partition into the lower shell.

[0096] The lower shell assembly turntable assembly 150 includes a turntable 150-10 driven by a workstation indexing table 150-90. A stationary disk 150-80 is coaxially arranged above the turntable 150-10. When the turntable 150-10 rotates, the stationary disk 150-80 is stationary.

[0097] Four positioning fixtures 150-11 are evenly distributed along the circumferential direction on the upper surface of the turntable 150-10. A partition direct vibration feeding track 150-50 and a lower shell direct vibration feeding track 150-40 are provided on the outer side of the turntable 150-10. The partition direct vibration feeding track 150-50 and the lower shell direct vibration feeding track 150-40 are arranged at 90-degree intervals to provide partitions and lower shells to the turntable 150-10 respectively, so that the partitions are installed in the lower shell during operation.

[0098] The stationary disk 150-80 is evenly distributed along the circumference by a lower shell picking robot 150-30, a partition picking robot 150-60, a partition assembly NG unloading robot 150-70, and a partition combination unloading robot 150-20. The lower shell picking robot 150-30 is used to pick up and place the lower shells conveyed to the lower shells on the lower shell direct vibration feeding track 150-40 onto the corresponding positioning fixture 150-11. The partition picking robot 150-60 is used to pick up and place the partitions conveyed to the lower shells on the partition direct vibration feeding track 150-50 into the lower shell. The partition assembly NG unloading robot 150-70 is used to remove the lower shells that are not equipped with partitions. The partition combination unloading robot 150-20 is used to transfer the partitions and lower shells that have been transferred to the position to the next work station.

[0099] The lower shell material handling robot 150-30, the partition material handling robot 150-60, the partition assembly unloading robot 150-70, and the partition combination unloading robot 150-20 all include a translation cylinder. A lifting cylinder is installed at the piston rod end of the translation cylinder, a rotary cylinder is installed at the piston rod end of the lifting cylinder, and a gripper cylinder is installed on the rotary part of the rotary cylinder.

[0100] The lower shell material handling robot 150-30, the partition material handling robot 150-60, the partition assembly unloading robot 150-70, and the partition combination unloading robot 150-20 are each mounted on the stationary disk 150-80 via a bracket 150-13. The bracket 150-13 includes a lower bracket 150-13-1, and a support plate 150-13-2 is vertically fixed on the top plate of the lower bracket 150-13-1. The mounting seat of the translation cylinder is fixed on the top plate of the lower bracket 150-13-1, and the piston rod of the translation cylinder passes through the guide hole of the support plate 150-13-2 and is fixedly connected to the lifting cylinder.

[0101] The top of the support plate 150-13-2 is fixed with a mounting bracket 150-13-3. An electromagnetic valve island is installed on the mounting bracket 150-13-3 to control the movements of the lower shell material handling robot 150-30, the partition material handling robot 150-60, the partition assembly unloading robot 150-70, and the partition combination unloading robot 150-20.

[0102] The mounting bracket 150-13-3 is a frame structure, and a mounting plate is provided on the surface of the frame structure for mounting the solenoid valve island;

[0103] A hydraulic buffer 150-13-4 is installed on the support plate 150-13-2 to buffer the resetting of the lifting cylinder;

[0104] A photoelectric sensor 150-13-5 is installed on the lower bracket 150-13-1 corresponding to the partition assembly NG unloading robot 150-70 to detect whether the lower shell is equipped with a partition.

[0105] The turntable 150-10 is provided with a plurality of weight-reducing holes 150-14 evenly distributed in a circular shape. The weight-reducing holes 150-14 are circular holes. The top surface of the positioning fixture 150-11 is provided with a receiving cavity to place the lower shell. The side wall of the receiving cavity is provided with a slot 150-11-1 extending in the vertical direction.

[0106] During operation, the lower shell assembly turntable assembly 150 rotates to the middle partition loading station. The partition picking robot 150-60 checks whether there is a middle partition inside the lower shell. If not, it takes out a middle partition and installs it inside the lower shell. Then, the lower shell assembly turntable assembly 150 rotates to the next station to check whether the partition is assembled in place. If it is assembled in place, it flows to the next station, where it is picked up by the flipping receiving robot 600 and transferred to the second moving module 320.

[0107] like Figure 3-6 As shown, the working process of the lower shell assembly turntable assembly 150 is as follows: The lower shell direct vibration feeding track 150-40 transports the lower shell to the turntable 150-10. The translation cylinder of the lower shell picking robot 150-30 extends to the top of the lower shell, and the rotary cylinder drives the gripper cylinder to rotate to the gripping position to pick up the lower shell. After the lower shell is gripped, the lifting cylinder moves upward, and the rotary cylinder drives the gripper cylinder to rotate so that the lower shell can be reliably placed in the positioning fixture 150-11. It can be understood that when placing the lower shell, the gripper cylinder can reliably move downward along the slot 150-11-1 to place the lower shell in place.

[0108] After the lower shell is placed in position, the turntable 150-10 rotates to the next station under the action of the station indexing table 90, so that the partition picking robot 150-60 can place the partition conveyed by the partition direct vibration feeding track 150-50 into the lower shell. After installation, the turntable 150-10 rotates to the next station, where a photoelectric sensor detects whether the partition has been installed in the lower shell. If no partition is detected, the partition assembly NG unloading robot 150-70 takes out the corresponding lower shell and puts it into the NG box. The lower shell with the partition installed is transferred from the turntable 150-10 to the next station, where the partition assembly unloading robot 150-20 sends the assembled lower shell and partition assembly to the next process.

[0109] like Figure 8-10 As shown, the upper cover assembly structure 200 includes an upper cover feeding elevator 210. The discharge end of the upper cover feeding elevator 210 is connected to the inlet end of the upper cover feeder 220. The upper cover feeder 220 provides the upper cover to the upper cover assembly turntable assembly 240.

[0110] It also includes a filter screen feeding module 230 and a flexible steel wire feeding assembly 250. The filter screen feeding module 230 provides a filter screen to the upper cover assembly turntable assembly 240, and the flexible steel wire feeding assembly 250 provides steel wire to the upper cover assembly turntable assembly 240. The upper cover assembly turntable assembly 240 assembles the filter screen and steel wire into the upper cover.

[0111] The top cover assembly turntable assembly 240 includes a turntable 240-20 driven by an indexing table 240-10, and a stationary disk 240-50 is fixedly arranged on the inner ring of the turntable 240-20.

[0112] The upper surface of the turntable 240-20 is provided with at least four positioning seats 240-30 evenly distributed in a circular shape to place the muffler cover. The stationary plate 240-50 is installed with a first pressure plate 240-60, a second pressure plate 240-70, a wire pressing robot 240-40, and a cover picking robot 240-80 at 90-degree intervals along the circumference.

[0113] The first pressure plate 240-60 and the second pressure plate 240-70 extend radially above the positioning seat 240-30, and hot riveting grooves are respectively opened at the pressing ends of the first pressure plate 240-60 and the second pressure plate 240-70.

[0114] The upper cover material handling robot 240-80 includes a flat push cylinder 240-81, which is mounted on a stationary disk 240-50. A lifting cylinder 240-82 is installed at the piston rod end of the flat push cylinder 240-50, and a gripper cylinder 240-83 is installed at the piston rod end of the lifting cylinder 240-82.

[0115] Eight positioning seats 240-30 are evenly distributed around the circumference of the turntable 240-20; positioning seats 240-30 are provided with positioning grooves to hold the muffler cover; the positioning seats 240-30 are provided with slots 340-31 on the outer side of the upper end of the positioning grooves; an electromagnetic valve island 240-90 is installed on the stationary plate 240-50, which controls the movement of the horizontal push cylinder 240-81, the lifting cylinder 240-82, and the gripper cylinder 240-83; multiple weight-reducing holes 240-21 are evenly distributed around the circumference of the turntable 240-20; hydraulic buffers 240-84 are installed on both sides of the horizontal push cylinder 240-81 to buffer the lifting cylinder 240-82 when it returns to its horizontal position.

[0116] During operation, the extension and retraction of the horizontal thrust cylinder 240-81 is very fast, generating significant impact. To reduce this impact and provide cushioning, hydraulic buffers 240-84 are installed on both sides of the horizontal thrust cylinder 240-81 to buffer the horizontal return of the lifting cylinder 240-82. Furthermore, the hydraulic buffers 240-84 are mounted on buffer mounting brackets, which are fixed to the stationary disk 240-50. The horizontal thrust cylinder 240-81 passes through a through hole in the buffer mounting bracket.

[0117] Furthermore, the upper cover assembly structure 200 also includes a filter placement detection module, a filter automatic welding module, a filter welding quality detection module, and a steel wire assembly quality detection module. The filter placement detection module is used to detect the quality of filter placement. Specifically, the filter placement detection module includes a fixed shaft, which is mounted on the worktable of the invention via a fixed base. An image recognition sensor is mounted on the upper end of the fixed shaft via an image sensor mounting bracket for detection. It is understood that the viewfinder of the image recognition sensor faces directly downwards for detection. The filter automatic welding module includes a welding module mounting base plate, on which a fixed column is mounted via a fixed base. An adjusting lifting handwheel is connected to the fixed column, and the adjusting lifting handwheel is fixedly connected to... The system includes a protective cover, with the adjusting lifting handwheel securely locked to the fixed column via a locking handle. A welding head lifting cylinder is installed inside the protective cover, and a temperature control controller is mounted on the cover. A heating cup, welding head, and temperature sensor are installed on the piston rod end of the welding head lifting cylinder. During operation, the welding head lifting cylinder raises and lowers the welding head for welding. A filter screen welding quality inspection module is used to inspect the welding quality of the filter screen. The module's structure mainly includes an image sensor mounting bracket and an image recognition sensor. A steel wire assembly quality inspection module is used to inspect the steel wire assembly quality. Its structure mainly includes an image sensor mounting bracket, an image recognition sensor, a transplanting cylinder, and a cylinder mounting base.

[0118] The flexible wire feeding assembly 250 includes a feeding conveyor line 250-1, a direct vibration feeding bin 250-2, and a vibrating feeding plate 250-9. The discharge end of the feeding conveyor line 250-1 is connected to the inlet end of the direct vibration feeding bin 250-2, and the inlet end of the direct vibration feeding bin 250-2 is connected to the vibrating feeding plate 250-9. An industrial camera 250-5 is installed above the vibrating feeding plate 250-9 to monitor the working condition of the vibrating feeding plate 250-9.

[0119] A material handling robot 250-6 is set up next to the vibrating feeder 250-9 to transfer the steel wire on the vibrating feeder 250-9 to the next work station;

[0120] The feeding conveyor line 250-1 includes a bracket 250-1-1. A driven shaft is rotatably mounted at one end of the bracket 250-1-1, and a drive shaft is rotatably mounted at the other end. The drive shaft is driven by a drive motor 250-1-3 mounted on the side of the bracket 250-1-1. A conveyor belt is tensioned on the drive shaft and the driven shaft. Baffle plates 250-1-2 are fixed on both sides of the upper surface of the bracket 250-1-1 along the width direction.

[0121] The discharge end of the direct vibration hopper 250-2 is equipped with an adjustable feeding guide plate 250-2-1, and the discharge end of the feeding guide plate 250-2-1 is rotatably connected to the dropping plate 250-2-2.

[0122] The discharge end of the direct vibration hopper 250-2 is provided with waist-shaped grooves on both sides, and the discharge guide plate 250-2-1 is fixedly connected to the waist-shaped grooves by bolts;

[0123] The blanking plate 250-2-2 has an arc-shaped hole and a round hole below it. The arc-shaped hole and the round hole of the blanking plate 250-2-2 are respectively connected to the blanking guide plate 250-2-1 by bolts.

[0124] Vibration isolation 250-10 is installed below the vibrating feeder 250-9, and vibration isolation 250-10 is supported in the workshop;

[0125] The discharge side of the direct vibration feeding bin 250-2 is vertically equipped with a camera mounting column 250-3, and a camera mounting plate 250-4 is installed on the upper end of the camera mounting column 250-3. An industrial camera 250-5 is installed on the camera mounting plate 250-4.

[0126] The material handling robot 250-6 is mounted next to the vibrating feeding plate 250-9 via the robot mounting base 250-7; the working end of the material handling robot 250-6 is equipped with a material handling gripper 250-8, which can be raised, lowered and rotated.

[0127] The filter screen feeding module 230 includes a filter screen feeding bin 230-3. The upper feed inlet of the filter screen feeding bin 230-3 is fixed with a filter screen feeding slide 230-6. The discharge end of the filter screen feeding bin 230-3 is equipped with a flexible vibrating plate 230-2 to receive the discharge from the filter screen feeding bin 230-3.

[0128] A material handling robot 230-1 is set up next to the flexible vibratory feeder 230-2, and the material handling robot 230-1 is equipped with a material handling gripper 230-7 at its execution end;

[0129] An industrial camera 230-4 is installed above the flexible vibratory feeder 230-2 to monitor the working condition of the flexible vibratory feeder 230-2.

[0130] The flexible vibratory feeder 230-2 is supported on the workbench by a vibration isolation fixture 230-8; a camera column 230-11 is provided on one side of the discharge end of the filter feed bin 230-3, and a camera mounting bracket 230-5 is installed on the camera column 230-11, with an industrial camera 230-4 mounted on the camera mounting bracket 230-5; a cover 230-3-1 is rotatably provided at the inlet of the filter feed bin 230-3, and a handle is fixed on the cover 230-3-1; the filter feed chute 230-6 is inclinedly supported on the filter feed bin 230-3 by a bracket, and the discharge end of the filter feed chute 230-6 has a constricted opening; the discharge end of the filter feed bin 230-3 is fixedly connected to the discharge guide trough 230-9, and the filter feed bin 230-3 has a... A switch plate 230-10 should be slidably fitted at the connection of the discharge guide 230-9. The opening and closing of the discharge guide 230-9 can be controlled by adjusting the lifting of the switch plate 230-10. The inner end of the discharge guide 230-9 extends into the filter screen replenishment bin 230-3 to receive the filter screen falling from the feed inlet of the filter screen replenishment bin 230-3. The filter screen replenishment bin 230-3 is equipped with a hopper, and the discharge port at the lower end of the hopper is directly opposite the discharge guide 230-9. The discharge guide 230-9 is driven to vibrate by a vibrator installed in the filter screen replenishment bin 230-3. The picking gripper 230-7 can move up and down relative to the execution end of the picking robot 230-1. The picking gripper 230-7 is connected to the execution end of the picking robot 230-1 through a fixing block.

[0131] The upper cover and lower shell assembly structure 300 includes a workstation indexing table 300-10. A stationary disk 300-30 is fixed on the upper part of the workstation indexing table 300-10. A turntable 300-20 is rotatably arranged on the outer ring of the stationary disk 300-30. Several sets of clamping components 300-40 are evenly distributed along the circumference of the surface of the turntable 300-20 to achieve the clamping of the muffler. A positioning fixture 300-60 is provided on the turntable 300-20 corresponding to each set of clamping components 300-40. The positioning fixture 300-60 is used to support the muffler.

[0132] On the stationary disk 300-30, a set of unlocking cylinders 300-50 are respectively provided for each set of clamping components 300-40. The unlocking cylinders 300-50 are used to unlock the clamping components 300-40.

[0133] The clamping assembly 300-40 includes a bracket 300-42, a pressure block 300-44 rotatably mounted on the bracket 300-42, a guide rod 300-41 fixed on the pressure block 300-44, and both ends of the guide rod 300-41 fitting into guide grooves 300-45 provided on the bracket 300-42. The tail end of the pressure block 300-44 is constructed as an unlocking force receiving part 300-44-1. The front end of the cylinder rod of the unlocking cylinder 300-50 cooperates with the unlocking force receiving part 300-44-1 to unlock the pressure block 300-44. The front end of the pressure block 300-44 is connected to the upper end of a tension spring 300-43. The lower end is fixedly connected to the surface of the turntable 300-20; the guide groove 300-45 is constructed as an arc-shaped groove; a vertically penetrating strip groove is opened on the pressure block 300-44, and a limiting rod is set in the strip groove; the upper end of the tension spring 300-43 extends into the strip groove and is connected to the limiting rod; the top of the positioning fixture 300-60 is constructed with a limiting groove to accommodate the lower cover of the muffler, and the side of the positioning fixture 300-60 is provided with a pick-and-place groove 300-61; the clamping assembly 300-40 is provided with four sets, and the unlocking cylinder 300-50 is also provided with four sets; the unlocking cylinder 300-50 is mounted on the stationary plate 300-30 through a cylinder bracket.

[0134] like Figure 21-24 As shown, the high-frequency welding structure 400 includes two sets of high-frequency welding modules arranged in parallel. Each set of high-frequency welding modules includes a high-frequency welding machine 410. A pressing cylinder 420 is installed on the top plate of the high-frequency welding machine 410. Linear bearings 430 are symmetrically arranged on both sides of the pressing cylinder 420 on the top plate of the high-frequency welding machine 410. The piston rod of the pressing cylinder 420 passes through the top plate of the high-frequency welding machine 410 and a pressure plate 440 is installed at the piston rod end of the pressing cylinder 420. A guide shaft 440-2 is fixed on the top surface of the pressure plate 440. The guide shaft 440-2 cooperates with the linear bearings 430. A locking handwheel 440-1 is threadedly connected to the pressure plate 440. The piston rod end of the pressing cylinder 420 is connected to the pressure plate 440 through a floating joint 420-1. The bottom surface of the pressure plate 440 is connected to the lower shell clamping fixture 450 through the locking handwheel 440-1.

[0135] Below the lower shell clamping fixture 450, a positioning fixture 460 is provided. Below the positioning fixture 460, a gripper lifting cylinder 480 is provided. The gripper lifting cylinder 480 drives the gripper cylinder 470 to move up and down, so that the welded muffler can be removed from the positioning fixture 460. The gripper lifting cylinder 480 is installed on the fixed base plate 470-1. The supporting bakelite board 470-3 is supported on the fixed base plate 470-1 by the supporting rod 470-2. The product detection sensor 470-4 is installed on the supporting bakelite board 470-3.

[0136] A material unloading detection structure 500 is installed on the discharge side of the high-frequency welding structure 400. A finished product transfer robot 510 is installed between the high-frequency welding structure 400 and the material unloading detection structure 500. The transfer robot 510 is used to transfer the finished product from the high-frequency welding position to the rear end, where it awaits the robot to pick up and place it on a tray, allowing the product to cool after welding. After cooling, the product undergoes a pull-out test. It is understood that after the upper cover and lower shell are high-frequency welded, a finished product unloading robot 570 is also provided to remove the welded finished product from the high-frequency welding structure 400. The finished product unloading robot 570 includes a servo motor and a telescopic cylinder driven by the servo motor to rotate. The telescopic cylinder drives a clamping cylinder to telescopically move, and the gripper of the clamping cylinder clamps the welded part.

[0137] The unloading detection structure 500 includes two sets of finished product cooling and storage modules 520 arranged in parallel, and a transfer robot 540 is respectively arranged at both ends between the two sets of finished product cooling and storage modules 520.

[0138] The discharge end of the finished product cooling and storage module 520 is equipped with a pull-out test module 530 and a weighing and conveying module 550, and a laser marking machine 560 is equipped next to the pull-out test module 530.

[0139] The pull-out test module 530 includes a mounting base plate 530-1, a rotary cylinder 530-3 is mounted on one side of the surface of the mounting base plate 530-1, and a gripper cylinder 4 is mounted on the working end of the rotary cylinder 530-3.

[0140] A horizontal transfer cylinder 530-7 is installed on the other side of the surface of the mounting base plate 530-1. A lifting cylinder 530-8 is installed on the piston rod end of the horizontal transfer cylinder 530-7. The piston rod end of the lifting cylinder 530-8 is connected to the upper end of the tension and compression sensor 530-9, and the lower end of the tension and compression sensor 530-9 is connected to the clamping cylinder 530-10.

[0141] The piston rod end of the horizontal transfer cylinder 530-7 is fixedly connected to the first mounting plate 530-12, the second mounting plate 530-13 is fixedly connected to the first mounting plate 530-12, and the lifting cylinder 530-8 is mounted on the second mounting plate 530-13.

[0142] The lifting cylinder 530-8 adopts a side-mounted guide rail structure, and the piston rod of the lifting cylinder 530-8 is connected to the horizontal part of the cylinder guide plate 530-14.

[0143] The clamping cylinder 530-10 includes two cooperating gripper bases 530-10-1, and a gripper 530-10-2 is fastened to the outer side of each gripper base 530-10-1. A rubber pad 530-10-3 is fastened to the inner surface of the gripper 530-10-2.

[0144] The inner wall of the gripper 530-10-2 is provided with a positioning step, the lower end of the gripper base 530-10-1 abuts against the positioning step, and guide grooves are respectively provided on the positioning step corresponding to the two ends of the gripper base 530-10-1.

[0145] The stepped hole of the gripper 530-10-2 is aligned with the threaded hole of the gripper base 530-10-1 and then fixedly connected by bolts.

[0146] Below the clamping cylinder 530-10, a defective product box 530-11 is provided. The horizontal transfer cylinder 530-7 is supported and fixed on the mounting base plate 530-1 by a support column 530-5. The defective product box 530-11 is equipped with a material detection sensor 530-16. A rotary cylinder mounting plate 530-2 is installed on the mounting base plate 530-1. The rotary cylinder mounting plate 530-2 is fixed on the mounting base plate 530-1 by a corner plate. The rotary cylinder 530-3 is supported on the top surface of the corner plate, and the rotary cylinder 530-3 is fixedly connected to the rotary cylinder mounting plate 530-2.

[0147] The working process of this invention is as follows: Figure 1 As shown, when the present invention is in operation,

[0148] 1. After the external vibratory feeder is filled with material through the feeding hopper, the linear vibratory track automatically delivers the top cover to the picking position. The picking robot automatically grabs the top cover and places it into the positioning fixture. The fixture moves to the second station, where the cleaning module automatically cleans the product. The fixture moves to the third station, where the SCARA picks up the filter and places it into the top cover on the fixture. The fixture moves to the fourth station, where the sensor detects the presence of the filter. The fixture moves to the fifth station; if a filter is present, the hot riveting welding machine automatically lowers to weld the filter; otherwise, the hot riveting welding machine does not operate. The fixture moves to the sixth station. The detection module automatically detects the welding quality of the filter screen; the tooling moves to the seventh station, where the flexible feeding system automatically grabs the steel wire and assembles it into the upper cover, and then tightens the steel wire (if the welding quality of the filter screen in the previous station is not up to standard, the steel wire will not be assembled in this station); the tooling moves to the eighth station, where the image detection sensor automatically detects whether the steel wire is present and whether it is accurately placed into the upper cover, and the NG product picking robot automatically grabs the upper cover half assembly and throws it into the NG product inlet; the qualified product picking robot automatically grabs the upper cover half assembly and places it into the first tooling of the transfer turntable.

[0149] The top cover feeding elevator 210 supplies the top cover, lifting it to the top cover feeder 220. The top cover feeder 220 provides the top cover to the top cover assembly turntable assembly 240. After the top cover is placed at the feeding station of the top cover assembly turntable assembly 240, the top cover assembly turntable assembly 240 rotates. When it rotates to the filter screen feeding station, the filter screen feeding module 230 provides the filter screen to the top cover assembly turntable assembly 240. The filter screen is placed in the top cover. After the filter screen is placed, the top cover assembly turntable assembly 240 drives the combination of the top cover and the filter screen to rotate to the inspection station, where the top cover assembly turntable assembly... The filter placement detection module 240-1, installed next to component 240, detects the quality of filter placement. This module includes a fixed base, which is fixed next to the upper cover assembly turntable assembly 240. A fixed shaft is mounted on the fixed base, and an image sensor mounting bracket is mounted on the upper part of the fixed shaft. An image recognition sensor is mounted on the image sensor mounting bracket. The image recognition sensor can effectively detect the installation quality of the filter in the upper cover below. If the filter assembly quality is qualified, the upper cover assembly turntable assembly 240 will perform filter welding when rotating to the next station. If the filter assembly quality is unqualified, the upper cover assembly turntable assembly 240 will not perform filter welding when rotating to the next station. Filter welding is performed by the filter welding module 240-2. The filter is placed in the upper cover and positioned by the positioning guide plate at the edge of the upper cover installation station. The welding head of the automatic filter welding module descends, melting and flattening the positioning guide plate of the upper cover, thereby fixing the filter. After welding, the top cover assembly turntable assembly 240 is transferred to the next station to inspect the filter screen welding quality. The filter screen welding quality is inspected by the filter screen welding quality inspection module 240-3, which has the same structure as the filter screen placement inspection module 240-1. After the filter screen welding quality inspection module 240-3, the top cover assembly turntable assembly 240 rotates to the next station. Qualified products will be automatically fitted with steel wires, while unqualified products will not be fitted with steel wires. The top cover assembly turntable assembly 240 rotates to the next station, where the steel wire placement inspection module 240-4 inspects the placement quality of the steel wires inside the top cover. Qualified products will be picked up by the material handling robot 310 and placed into the positioning fixture on the top cover lower shell assembly structure 300, while unqualified products will be picked up by the material handling robot and dropped into the NG product discharge port. During operation, if the filter placement detection module 240-1 detects that the filter placement is unqualified, the upper cover assembly turntable assembly 240 will no longer place steel wires during subsequent rotations and will directly rotate to the first moving module 310, where the first moving module 310 will grab the NG product and drop it into the NG product discharge port. Similarly, if the filter welding is unqualified, the upper cover assembly turntable assembly 240 will no longer place steel wires during subsequent rotations and will directly rotate to the first moving module 310, where the first moving module 310 will grab the NG product and drop it into the NG product discharge port.

[0150] 2. After the external vibratory feeder is filled with material through the feeding bin, the linear vibrating track automatically sends the lower shell to the picking position. The picking robot automatically grabs the lower shell into the first positioning fixture of the turntable. The fixture rotates to the second station, and the picking robot automatically grabs the partition and assembles it into the lower shell. The fixture rotates to the third station, and the sensor detects whether the partition is assembled in place. The NG product robot automatically grabs it and throws it into the NG product box. The fixture rotates to the fourth station, and the unloading robot automatically grabs the lower shell half assembly and feeds it to the rotating module. The rotating module automatically rotates the product 180°, waiting for the picking robot to pick it up.

[0151] The lower shell feeding elevator 110 is used to supply the lower shell. The lower shell feeding elevator 110 lifts the lower shell to the lower shell feeder 120, and the lower shell feeder 120 supplies the lower shell to the lower shell assembly turntable assembly 150. The lower shell assembly turntable assembly 150 assembles the partition into the lower shell. After the partition is assembled into the lower shell and the assembly is found to be qualified, the lower shell assembly turntable assembly 150 rotates to the unloading station. The flipping receiving robot next to the lower shell assembly turntable assembly 150 takes out the assembly of the lower shell and the partition and flips it over, that is, flips the lower shell assembly to the position where the opening faces downward (when the partition is assembled into the lower shell, the partition is elastically locked into the lower shell, so when the assembled lower shell assembly is flipped to the position where the opening faces downward, the partition will not fall out of the lower shell).

[0152] III. Figure 1 As shown, to further assemble the assembled upper cover assembly and lower shell assembly, the assembled upper cover assembly and lower shell assembly need to be concentrated towards the center before assembly to form a whole. It is understood that, to achieve the above objective, the present invention also includes a first moving module 310 and a second moving module 320. The first moving module 310 is used to transfer the assembled upper cover assembly to the workstation of the upper cover and lower shell assembly structure 300. The second moving module 320 grasps the lower shell assembly rotated into position by the flipping and receiving robot 600 and moves it onto the upper cover assembly on the upper cover and lower shell assembly structure 300, then presses it in place. After press-fitting, the third moving module 330 grasps and moves it to the high-frequency welding station for high-frequency welding.

[0153] like Figure 21-24As shown, the third moving module 330 moves the assembled muffler to the high-frequency welding station. The picking robot places the upper cover half-assembly on the first station of the transfer turntable. The turntable rotates to the second reserved empty station and then to the third station. The picking robot picks up the lower shell half-assembly from the rotating module and then clips it onto the upper cover half-assembly. Before assembling it onto the upper cover half-assembly, a detection sensor is used to check whether the partition is still inside the lower shell. If it is, the robot continues to move and assemble it onto the upper cover half-assembly. If the partition is missing, the robot stops assembling and directly discards it into the NG (Not Good) slot. The turntable rotates to the fourth station, and the unloading robot automatically removes the assembled product from the fixture. After moving and rotating 180°, the robot places it into the high-frequency welding machine to await high-frequency welding.

[0154] 4. After high-frequency welding is completed, the unloading robot automatically picks up the product and places it into the transfer positioning fixture. The transfer module sends the product to the SCARA picking position, and the SCARA automatically performs the tray placement operation (the tray temporarily stores 39 products, which takes about 5 minutes). After the tray is full, it is automatically transferred to the unloading position, and the SCARA automatically places another tray. Another SCARA automatically picks up the product and places it into the pull-out force testing table for pull-out force testing. OK products are automatically laser-marked and the SCARA automatically unloads the product. NG products are automatically dropped into the NG product box and no longer marked. Finally, the finished products are weighed and unloaded.

[0155] In operation, this invention involves feeding the upper cover and lower shell from both sides, assembling them separately on each side, and then converging the assembled upper cover and lower shell assemblies towards the center to form a muffler. High-frequency welding is then performed to securely connect the upper cover and lower shell assemblies, creating the finished muffler. Finally, cooling and pull-out tests are conducted. This invention is highly efficient and fast in practice, producing stable and reliable product quality. It utilizes a PLC program to control the actions of each component.

[0156] Finally, it should be noted that the above specific embodiments are only used to illustrate the technical solutions of the present invention and not to limit it. Although the present invention has been described in detail with reference to examples, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A flexible assembly line for mufflers, characterized in that, include: The lower shell assembly structure (100) includes a lower shell feeding assembly for providing the lower shell and a partition feeding assembly for providing the partition, and is capable of assembling the partition and the lower shell into a lower shell assembly. The cover assembly structure (200) includes a cover feeding assembly for providing the cover, a filter screen feeding assembly for providing the filter screen, and a wire ring feeding assembly for providing the wire ring, and is capable of assembling the filter screen, the wire ring and the cover into a cover assembly. Upper cover and lower shell assembly structure (300) for assembling the upper cover assembly and the lower shell assembly into a muffler; A high-frequency welding structure (400) is used to weld and fix the muffler assembled with the upper cover and lower shell assembly structure (300) to the upper cover assembly and the lower shell assembly. The lower shell assembly structure (100) includes a lower shell feeding elevator (110), the discharge end of which is connected to a lower shell feeder (120), and the lower shell feeder (120) supplies the lower shell to the lower shell assembly turntable assembly (150). It also includes a partition feeding elevator (130), the discharge end of which is connected to the feed end of a partition feeder (140), which supplies partitions to the lower shell assembly turntable assembly (150); The lower shell assembly turntable assembly (150) assembles the partition into the lower shell; The upper cover assembly structure (200) includes an upper cover feeding elevator (210), the discharge end of which is connected to the feed end of an upper cover feeder (220), and the upper cover feeder (220) provides the upper cover to the upper cover assembly turntable assembly (240); It also includes a filter screen feeding module (230) and a steel wire ring flexible feeding assembly (250), wherein the filter screen feeding module (230) provides a filter screen to the upper cover assembly turntable assembly (240), and the steel wire ring flexible feeding assembly (250) provides a steel wire ring to the upper cover assembly turntable assembly (240), and the upper cover assembly turntable assembly (240) assembles the filter screen and the steel wire ring into the upper cover; The upper cover and lower shell assembly structure (300) includes a workstation indexing table (300-10), with a stationary disk (300-30) fixed on the upper part of the workstation indexing table (300-10). A turntable (300-20) is rotatably arranged on the outer ring of the stationary disk (300-30). Several sets of clamping components (300-40) are evenly distributed along the circumference of the surface of the turntable (300-20) to achieve the clamping of the muffler. A positioning fixture (300-60) is provided on the turntable (300-20) corresponding to each set of clamping components (300-40). The positioning fixture (300-60) is used to support the muffler. On the stationary disc (300-30), a set of unlocking cylinders (300-50) are respectively provided for each set of clamping components (300-40). The unlocking cylinders (300-50) are used to unlock the clamping components (300-40). The clamping assembly (300-40) includes a bracket (300-42), a pressure block (300-44) rotatably mounted on the bracket (300-42), a guide rod (300-41) fixed on the pressure block (300-44), and both ends of the guide rod (300-41) fitting into guide grooves (300-45) provided on the bracket (300-42). The tail end of the pressure block (300-44) is constructed as an unlocking force receiving part (300-44-1). The front end of the cylinder rod of the unlocking cylinder (300-50) cooperates with the unlocking force receiving part (300-44-1) to unlock the pressure block (300-44). The front end of the pressure block (300-44) is connected to the upper end of a tension spring (300-43). The lower end of the 0-43 is fixedly connected to the surface of the turntable (300-20); the guide groove (300-45) is constructed as an arc-shaped groove; the pressure block (300-44) has a vertically penetrating strip groove, a limiting rod is provided in the strip groove, the upper end of the tension spring (300-43) extends into the strip groove and is connected to the limiting rod; the top of the positioning fixture (300-60) is constructed with a limiting groove to accommodate the lower shell of the muffler, and the side of the positioning fixture (300-60) is provided with a pick-and-place groove (300-61); the clamping assembly (300-40) is provided with four sets, and the unlocking cylinder (300-50) is also provided with four sets; the unlocking cylinder (300-50) is mounted on the stationary plate (300-30) through a cylinder bracket; The high-frequency welding structure (400) includes two sets of high-frequency welding modules arranged in parallel. Each set of high-frequency welding modules includes a high-frequency welding machine (410). A pressing cylinder (420) is installed on the top plate of the high-frequency welding machine (410). Linear bearings (430) are symmetrically arranged on both sides of the top plate of the high-frequency welding machine (410) corresponding to the pressing cylinder (420). The piston rod of the pressing cylinder (420) passes through the top plate of the high-frequency welding machine (410) and is located on the pressing cylinder (420). A pressure plate (440) is installed on the piston rod end of the 0). A guide shaft (440-2) is fixed on the top surface of the pressure plate (440). The guide shaft (440-2) is matched with a linear bearing (430). A locking handwheel (440-1) is threaded on the pressure plate (440). The piston rod end of the lower cylinder (420) is connected to the pressure plate (440) through a floating joint (420-1). The bottom surface of the pressure plate (440) is connected to the lower shell clamping fixture (450) through the locking handwheel (440-1). A positioning fixture (460) is provided below the lower shell clamping fixture (450), and a gripper lifting cylinder (480) is provided below the positioning fixture (460). The gripper lifting cylinder (480) drives the gripper cylinder (470) to perform lifting and lowering movements to receive the muffler assembly transferred from the assembly transfer robot. The gripper lifting cylinder (480) is installed on the fixed base plate (470-1), and the supporting bakelite board (470-3) is supported on the fixed base plate (470-1) by the supporting rod (470-2). The product detection sensor (470-4) is installed on the supporting bakelite board (470-3).

2. The muffler flexible assembly line as described in claim 1, characterized in that: The lower shell assembly turntable assembly (150) includes a turntable (150-10) driven by a workstation indexing table (150-90). A stationary disk (150-80) is coaxially arranged above the turntable (150-10). When the turntable (150-10) rotates, the stationary disk (150-80) is stationary. Four positioning fixtures (150-11) are evenly distributed along the circumference on the upper surface of the turntable (150-10). A partition direct vibration feeding track (150-50) and a lower shell direct vibration feeding track (150-40) are provided on the outer side of the turntable (150-10). The partition direct vibration feeding track (150-50) and the lower shell direct vibration feeding track (150-40) are arranged at 90-degree intervals to provide partitions and lower shells to the turntable (150-10) respectively, so that the partitions are installed in the lower shell during operation. The stationary disk (150-80) is evenly distributed along the circumference with a lower shell picking robot (150-30), a partition picking robot (150-60), a partition assembly NG unloading robot (150-70), and a partition combination unloading robot (150-20). The lower shell picking robot (150-30) is used to pick up and place the lower shell that has been conveyed to the lower shell on the lower shell direct vibration feeding track (150-40) onto the corresponding positioning fixture (150-11). The partition picking robot (150-60) is used to pick up and place the partition that has been conveyed to the lower shell on the partition direct vibration feeding track (150-50) into the lower shell. The partition assembly NG unloading robot (150-70) is used to remove the lower shell that has not been equipped with a partition. The partition combination unloading robot (150-20) is used to transfer the partition and lower shell assembly that has been transferred to the next station.

3. The muffler flexible assembly line as described in claim 2, characterized in that: The lower shell material handling robot (150-30), the partition material handling robot (150-60), the partition assembly unloading robot (150-70), and the partition combination unloading robot (150-20) all include a translation cylinder. A lifting cylinder is installed at the piston rod end of the translation cylinder, a rotary cylinder is installed at the piston rod end of the lifting cylinder, and a gripper cylinder is installed on the rotary part of the rotary cylinder. The lower shell material handling robot (150-30), the partition material handling robot (150-60), the partition assembly unloading robot (150-70), and the partition assembly unloading robot (150-20) are each mounted on the stationary disk (150-80) via a bracket (150-13). The bracket (150-13) includes a lower bracket (150-13-1), and a support plate (150-13-2) is vertically fixed on the top plate of the lower bracket (150-13-1). The mounting seat of the translation cylinder is fixed on the top plate of the lower bracket (150-13-1), and the piston rod of the translation cylinder passes through the guide hole of the support plate (150-13-2) and is fixedly connected to the lifting cylinder. The top of the support plate (150-13-2) is fixed with a mounting bracket (150-13-3). An electromagnetic valve island is installed on the mounting bracket (150-13-3) to control the movements of the lower shell material handling robot (150-30), the partition material handling robot (150-60), the partition assembly unloading robot (150-70), and the partition combination unloading robot (150-20). The mounting bracket (150-13-3) is a frame structure, and a mounting plate is provided on the surface of the frame structure for mounting the solenoid valve island; A hydraulic buffer (150-13-4) is installed on the support plate (150-13-2) to buffer the resetting of the lifting cylinder; A photoelectric sensor (150-13-5) is installed on the lower bracket (150-13-1) corresponding to the partition assembly NG unloading robot (150-70) to detect whether the lower shell is equipped with a partition. The turntable (150-10) has a plurality of weight-reducing holes (150-14) evenly distributed in a circular shape, and the weight-reducing holes (150-14) are circular holes; the top surface of the positioning fixture (150-11) is provided with a receiving cavity to place the lower shell; the side wall of the receiving cavity is provided with a slot (150-11-1) extending in the vertical direction.

4. The muffler flexible assembly line as described in claim 1, characterized in that: The upper cover assembly turntable assembly (240) includes a turntable (240-20) driven by an indexing table (240-10), and a stationary disk (240-50) is fixedly arranged on the inner ring of the turntable (240-20). The turntable (240-20) has 8 positioning seats (240-30) evenly distributed along its circumference to hold the muffler cover. The stationary plate (240-50) has a first pressure plate (240-60), a second pressure plate (240-70), a wire ring pressing robot (240-40), and a cover picking robot (240-80) installed sequentially at 90-degree intervals along its circumference. The first pressure plate (240-60) and the second pressure plate (240-70) extend radially above the positioning seat (240-30), and the pressing ends of the first pressure plate (240-60) and the second pressure plate (240-70) are respectively provided with hot riveting grooves; The upper cover material handling robot (240-80) includes a horizontal push cylinder (240-81), which is mounted on a stationary plate (240-50). A lifting cylinder (240-82) is installed at the piston rod end of the horizontal push cylinder (240-81), and a gripper cylinder (240-83) is installed at the piston rod end of the lifting cylinder (240-82). The positioning seat (240-30) is provided with a positioning groove to place the muffler cover; the positioning seat (240-30) is provided with a slot (340-31) on the outer side of the upper end of the positioning groove; the stationary plate (240-50) is equipped with a solenoid valve island (240-90), which controls the operation of the horizontal push cylinder (240-81), the lifting cylinder (240-82) and the gripper cylinder (240-83); multiple weight reduction holes (240-21) are evenly distributed in a circular shape on the turntable (240-20); hydraulic buffers (240-84) are installed on both sides of the horizontal push cylinder (240-81) to buffer the lifting cylinder (240-82) when it returns to its horizontal position.

5. The muffler flexible assembly line as described in claim 1, characterized in that: The flexible wire coil feeding assembly (250) includes a feeding conveyor line (250-1), a direct vibration feeding bin (250-2), and a vibrating feeding plate (250-9). The discharge end of the feeding conveyor line (250-1) is connected to the inlet end of the direct vibration feeding bin (250-2), and the discharge end of the direct vibration feeding bin (250-2) is connected to the vibrating feeding plate (250-9). An industrial camera (250-5) is installed above the vibrating feeding plate (250-9) to monitor the working condition of the vibrating feeding plate (250-9). A material handling robot (250-6) is set up next to the vibrating feeder (250-9) to transfer the wire ring on the vibrating feeder (250-9) to the next station; The feeding conveyor line (250-1) includes a bracket (250-1-1), with a driven shaft rotatably mounted at one end of the bracket (250-1-1) and a drive shaft rotatably mounted at the other end. The drive shaft is driven by a drive motor (250-1-3) mounted on the side of the bracket (250-1-1). A conveyor belt is tensioned on the drive shaft and the driven shaft. Baffle plates (250-1-2) are fixed on both sides of the upper surface of the bracket (250-1-1) along the width direction. The discharge end of the direct vibration feeding bin (250-2) is equipped with an adjustable feeding guide plate (250-2-1), and the discharge end of the feeding guide plate (250-2-1) is rotatably connected to the dropping plate (250-2-2). The discharge end of the direct vibration feeding bin (250-2) is provided with waist-shaped grooves on both sides, and the feeding guide plate (250-2-1) is fixedly connected to the waist-shaped grooves by bolts; The blanking plate (250-2-2) has an arc-shaped hole and a round hole below it. The arc-shaped hole and the round hole of the blanking plate (250-2-2) are connected to the blanking guide plate (250-2-1) by bolts. Vibration isolation device (250-10) is installed below the vibrating feeder (250-9), and the vibration isolation device (250-10) is supported in the workshop. The discharge side of the direct vibration feeding bin (250-2) is vertically equipped with a camera mounting column (250-3), and a camera mounting plate (250-4) is installed on the upper end of the camera mounting column (250-3). An industrial camera (250-5) is installed on the camera mounting plate (250-4). The material handling robot (250-6) is mounted next to the vibrating feeding plate (250-9) via a robot mounting base (250-7); the working end of the material handling robot (250-6) is equipped with a material handling gripper (250-8), which is capable of lifting, lowering and rotating; The filter screen feeding module (230) includes a filter screen feeding bin (230-3). The upper feed inlet of the filter screen feeding bin (230-3) is fixed with a filter screen feeding chute (230-6). The discharge end of the filter screen feeding bin (230-3) is equipped with a flexible vibrating plate (230-2) to receive the discharge from the filter screen feeding bin (230-3). A material handling robot (230-1) is set up next to the flexible vibratory feeder (230-2), and the material handling robot (230-1) is equipped with a material handling gripper (230-7) at its execution end. An industrial camera (230-4) is installed above the flexible vibratory feeder (230-2) to monitor the working condition of the flexible vibratory feeder (230-2); The flexible vibratory feeder (230-2) is supported on the workbench by a vibration isolation fixture (230-8); a camera column (230-11) is installed on one side of the discharge end of the filter feed bin (230-3), and a camera mounting bracket (230-5) is installed on the camera column (230-11), with an industrial camera (230-4) mounted on the camera mounting bracket (230-5); the feed inlet of the filter feed bin (230-3) is... A rotating cover (230-3-1) is provided at the feed inlet, and a handle is fixed on the cover (230-3-1). The filter screen replenishment chute (230-6) is inclinedly supported on the filter screen replenishment bin (230-3) by a bracket, and the discharge end of the filter screen replenishment chute (230-6) has a constricted end. The discharge end of the filter screen replenishment bin (230-3) is fixedly connected to the discharge guide groove (230-9). A switch plate (230-10) is slidably fitted at the connection point corresponding to the discharge guide chute (230-9). The opening and closing of the discharge guide chute (230-9) is controlled by adjusting the height of the switch plate (230-10). The inner end of the discharge guide chute (230-9) extends into the filter screen replenishment bin (230-3) to receive the filter screen falling from the inlet of the filter screen replenishment bin (230-3); the filter screen replenishment bin (230-3) contains... A hopper is provided, with the discharge port at the lower end of the hopper facing the discharge guide chute (230-9). The discharge guide chute (230-9) is driven to vibrate by a direct vibrator installed in the filter replenishment hopper (230-3). The picking gripper (230-7) can move up and down relative to the execution end of the picking robot (230-1). The picking gripper (230-7) is connected to the execution end of the picking robot (230-1) through a fixing block.

6. The muffler flexible assembly line as described in claim 1, characterized in that: The high-frequency welding structure (400) is provided with a material unloading detection structure (500) on the discharge side, and a finished product transfer robot (510) is provided between the high-frequency welding structure (400) and the material unloading detection structure (500). The unloading detection structure (500) includes two sets of finished product cooling and storage modules (520) arranged in parallel, and a transfer robot (540) is set at each end between the two sets of finished product cooling and storage modules (520). The discharge end of the finished product cooling and storage module (520) is equipped with a pull-out test module (530) and a weighing and conveying module (550), and a laser marking machine (560) is equipped next to the pull-out test module (530). The pull-out test module (530) includes a mounting base plate (530-1), a rotary cylinder (530-3) is mounted on one side of the surface of the mounting base plate (530-1), and a gripper cylinder (4) is mounted on the working end of the rotary cylinder (530-3). A horizontal transfer cylinder (530-7) is installed on the other side of the mounting base plate (530-1). A lifting cylinder (530-8) is installed on the piston rod end of the horizontal transfer cylinder (530-7). The piston rod end of the lifting cylinder (530-8) is connected to the upper end of the tension and compression sensor (530-9). The lower end of the tension and compression sensor (530-9) is connected to the clamping cylinder (530-10). The piston rod end of the horizontal transfer cylinder (530-7) is fixedly connected to the first mounting plate (530-12), the second mounting plate (530-13) is fixedly connected to the first mounting plate (530-12), and the lifting cylinder (530-8) is mounted on the second mounting plate (530-13). The lifting cylinder (530-8) adopts a side-mounted guide rail structure, and the piston rod of the lifting cylinder (530-8) is connected to the horizontal part of the cylinder guide plate (530-14); The clamping cylinder (530-10) includes two cooperating jaw bases (530-10-1), and a jaw (530-10-2) is fastened to the outer side of each jaw base (530-10-1). A rubber pad (530-10-3) is fastened to the inner surface of the jaw (530-10-2). The inner wall of the gripper (530-10-2) is provided with a positioning step, the lower end of the gripper base (530-10-1) abuts against the positioning step, and guide grooves are respectively provided on the positioning step corresponding to the two ends of the gripper base (530-10-1); The stepped hole of the gripper (530-10-2) is aligned with the threaded hole of the gripper base (530-10-1) and then fixedly connected by bolts. A defective product box (530-11) is provided below the clamping cylinder (530-10). The horizontal transfer cylinder (530-7) is supported and fixed on the mounting base plate (530-1) by the support column (530-5). The defective product box (530-11) is equipped with a material detection sensor (530-16). A rotary cylinder mounting plate (530-2) is installed on the mounting base plate (530-1). The rotary cylinder mounting plate (530-2) is fixed on the mounting base plate (530-1) by the corner plate. The rotary cylinder (530-3) is supported on the top surface of the corner plate and is fixedly connected to the rotary cylinder mounting plate (530-2).

Images