An automatic cushion mounting and oiling apparatus capable of producing a plurality of products

Abstract

The application discloses a kind of automatic installation cushion and oiling equipment of multiple product interchangeable production, including workbench, workbench is provided with oil injection station, cushion loading station, detection station and rotary table, and workpiece positioning seat is detachably provided on rotary table, rotary table is drivenly connected with rotating mechanism, rotating mechanism drives rotary table to rotate, to make workpiece positioning seat sequentially pass through oil injection station, cushion loading station and detection station according to preset path.The oil injection, cushion installation and detection function of the present application are highly integrated to solve the problem of low efficiency and quality control lag in current production mode.

Description

Technical Field

[0001] This invention relates to the field of automated assembly equipment technology, and in particular to an automatic installation buffer pad and oiling device that can be used for the production of multiple interchangeable products. Background Technology

[0002] In the assembly process of mechanical parts or electronic products, it is often necessary to install buffer pads on the workpiece to reduce shock, prevent scratches or provide insulation, and at the same time, apply oil to specific parts to achieve lubrication or rust prevention.

[0003] Currently, existing automated oiling or padding equipment typically uses customized fixtures and equipment based on the contours and hole positions of a single workpiece model, with fixed workpiece positioning seats. When the production line needs to switch to producing products of different specifications and shapes, the entire machine must be shut down and a large number of positioning fixtures must be manually disassembled and replaced. This is not only time-consuming and inefficient, but also prone to loss of positioning accuracy during the replacement process. Furthermore, the existing oiling and padding installation processes are usually completed in steps by two separate machines. This decentralized operation not only occupies a large amount of workshop space, but also requires additional manpower or conveyor mechanisms for transferring workpieces between multiple machines, increasing the risk of scratches or secondary contamination on the workpiece surface. It is also difficult to ensure the precise consistency of oiling amount and padding position. In addition, traditional production lines often conduct manual visual inspection or spot checks after all processes are completed. If oil leakage, insufficient oil, missing or misaligned pads occur during oiling or padding installation, it is difficult to detect and stop the machine for correction in time, resulting in defective products flowing into subsequent processes, causing material waste and increased rework costs.

[0004] In summary, there is an urgent need in the existing technology for an automated device that can enable rapid interchangeable production of multiple products and highly integrate functions such as oiling, buffer pad installation, and testing, in order to solve the problems of low flexibility, low efficiency, and lagging quality control in the current production mode. Summary of the Invention

[0005] The purpose of this invention is to provide an automatic device for installing and oiling buffer pads that can be used for the interchangeable production of multiple products. This device highly integrates oiling, buffer pad installation, and testing functions to solve the problems of low efficiency and lagging quality control in the current production mode.

[0006] The above-mentioned technical objective of the present invention is achieved through the following technical solution: an automatic installation and oiling device for multiple interchangeable products, comprising a worktable, wherein the worktable is provided with an oiling station, a buffer pad loading station, an inspection station and a rotary table, wherein a workpiece positioning seat is detachably provided on the rotary table, and the rotary table is drivenly connected to a rotating mechanism, the rotating mechanism driving the rotary table to rotate, so that the workpiece positioning seat passes sequentially through the oiling station, the buffer pad loading station and the inspection station according to a preset path.

[0007] By adopting the above technical solution, and by setting up integrated oiling, feeding, and inspection stations on the workbench, as well as a rotatable rotary table, the automatic transfer and processing of workpieces between multiple processes is realized. The workpiece positioning seat adopts a detachable design, which allows for quick replacement of the positioning seat when dealing with products of different shapes and sizes, thereby realizing the entire production line changeover and improving the equipment's production capacity and equipment utilization rate. The cooperation between the rotary table and the rotating mechanism ensures the repeatability of the positioning accuracy during station switching, ensuring the consistency of processing quality.

[0008] A further configuration of the present invention is as follows: four workpiece positioning seats are configured and evenly distributed on the rotary table; the oil injection station, the buffer pad loading station, and the detection station are evenly spaced along the circumference of the rotary table and correspond to the positions of three consecutive workpiece positioning seats; the rotary table switches the workpiece positioning seat to the next station every 90 degrees of rotation.

[0009] By adopting the above technical solution, a highly efficient parallel processing cycle is formed. During any indexing stop time, the three actions of oiling, padding, and inspection can be performed simultaneously, eliminating the waiting time between processes and improving the output efficiency per unit time. At the same time, the symmetrical layout makes the rotary table uniformly stressed, which is conducive to the stability of long-term operation and the maintenance of rotational accuracy.

[0010] A further provision of the present invention is that: an oil injection mechanism and an oil injection drive mechanism for driving the displacement of the oil injection mechanism are provided on the oil injection station; the oil injection mechanism includes a screw valve and a syringe seat communicating with the screw valve; a filter nozzle is provided at the end of the screw valve; an injection needle is sleeved on the filter nozzle; and an oil injection hole is opened at the end of the injection needle opposite to the filter nozzle.

[0011] By adopting the above technical solution and using a screw valve in conjunction with a precision injection needle, high-precision quantitative coating of micro-lubricating grease is achieved, avoiding the problems of uneven oil volume and waste caused by traditional brush oiling. The filter effectively intercepts particulate matter in the grease, prevents clogging of the oil injection hole, and ensures the continuity and reliability of the oiling process.

[0012] A further provision of the present invention is that: a push tube is provided on the buffer pad loading station, and a push tube driving assembly is provided to drive the displacement of the push tube; a vibratory feeder for storing and conveying the buffer pad is also provided on the worktable; an insertion hole for inserting the push tube is opened in the center of the buffer pad; the push tube driving assembly drives the push tube to insert into the insertion hole of the buffer pad located at the end of the conveying path of the vibratory feeder, and moves the buffer pad to the workpiece on the workpiece positioning seat corresponding to the position of the buffer pad loading station.

[0013] By adopting the above technical solution, the vibration plate is used to realize the automated alignment and feeding of the cushioning pads. Combined with the push tube insertion feeding mechanism, the structure is simple and the operation is reliable. Compared with the traditional vacuum suction cup, which is prone to dropping or tilting when picking up soft cushioning pads, the push tube insertion into the hole for hard picking has a high success rate and can ensure that the cushioning pads remain stable during the transfer process, effectively ensuring the accuracy of the installation position.

[0014] A further feature of the present invention is that the diameter of the push tube gradually decreases along its end direction, and the diameter of the insertion hole gradually decreases along the direction away from the end face of the buffer pad, so that a tapered fit is formed between the push tube and the insertion hole.

[0015] By adopting the above technical solution, this matching method not only provides axial friction to prevent the buffer pad from slipping, but also provides radial tension force. During high-speed transfer, the buffer pad will not rotate or fall off relative to the push tube due to inertia or slight collision, which improves the stability of material transfer under high-speed operation. Moreover, the conical surface matching structure enables the push tube to have an automatic centering function during insertion. Even if there is a slight eccentricity error in the position of the buffer pad at the end of the vibratory feeder, the push tube can be smoothly inserted and its posture corrected by the conical surface guidance.

[0016] A further configuration of the present invention is as follows: the push tube drive assembly includes a robotic arm mechanism, the robotic arm mechanism including a base, a large arm movably connected to the base, and a small arm movably connected to the large arm. The large arm is rotatable relative to the base in a vertical direction, and the small arm is rotatable relative to the large arm in a vertical direction. The small arm is provided with a cylinder, an air pipe communicating with the cylinder, and a piston rod drivenly connected to the cylinder. The piston rod is drivenly connected to a push tube drive mechanism. The push tube is installed at the execution end of the push tube drive mechanism. The cylinder is inlet air through the air pipe and pushes the piston rod to move in a vertical direction, thereby driving the push tube to perform material picking or discharging actions.

[0017] By adopting the above technical solution, a robotic arm mechanism is used as the driving component, replacing the traditional linear module connection. This has the advantages of fast movement speed, small space occupation, and flexible programming. The vertical drive of the cylinder to push the tube is integrated into the end of the forearm, realizing the decoupled motion control of "rapid horizontal positioning and precise vertical insertion and removal", which simplifies the control algorithm.

[0018] A further provision of the present invention is that an assembly component is provided between the piston rod and the push tube drive mechanism, the assembly component including a primary assembly component detachably connected to the piston rod and a secondary assembly component detachably connected to the primary assembly component, and the push tube drive mechanism is mounted on the secondary assembly component.

[0019] By adopting the above technical solution, when it is necessary to repair the push tube drive mechanism or replace push tubes of different specifications, the primary assembly, together with the secondary assembly and the push tube drive mechanism, can be removed from the piston push rod as a whole without disassembling the piston push rod. Alternatively, the secondary assembly, together with the push tube drive mechanism, can be removed from the primary assembly. This allows for flexible replacement according to maintenance and product processing needs, effectively reducing the number of parts to be replaced. It also shortens the changeover and maintenance time and enhances the equipment's adaptability to different product models.

[0020] A further configuration of the present invention is as follows: the primary assembly includes a primary assembly head, the secondary assembly includes a secondary assembly head corresponding to the position of the primary assembly head, a positioning protrusion is provided on the end face of the secondary assembly head near the primary assembly head, a positioning groove corresponding to the position of the positioning protrusion is provided on the end face of the primary assembly head near the secondary assembly head, the primary assembly head extends toward the secondary assembly head and forms a docking portion, the secondary assembly head has a docking hole adapted to the docking portion, and a plurality of protrusions are provided on the side wall of the docking portion. When the positioning protrusion engages with the positioning groove, the docking portion extends into the docking hole, and the protrusions are interference-fitted with the inner wall of the docking hole.

[0021] By adopting the above technical solution, not only is reliable connection rigidity provided to prevent the generation of tiny vibration gaps during high-speed movement, but replacement is also convenient, taking into account both the needs of high-precision positioning and rapid changeover.

[0022] A further provision of the present invention is that an AOI visual inspection device is provided on the inspection station, and the camera light source of the AOI visual inspection device is located above the workpiece positioning seat corresponding to the inspection station, for detecting whether the workpiece on the workpiece positioning seat has been oiled and whether a buffer pad has been installed.

[0023] By adopting the above technical solution and using an AOI visual inspection device to replace manual visual inspection, online, fully automatic, and non-contact inspection of the two key processes of oil injection and gasket installation is realized. The device can quickly and accurately identify common defects such as oil leakage, insufficient oil injection, missing or misaligned buffer gaskets, and promptly alarm or control the downstream rejection mechanism. This effectively prevents defective products from flowing into subsequent assembly stages and plays a quality control role in ensuring the sealing and durability of the final product.

[0024] A further feature of the present invention is that: a snap-fit ​​connector is provided at one end of the buffer pad away from the insertion hole, and a radial protrusion is provided on the outer surface of the snap-fit ​​connector, forming a step between the radial protrusion and the outer peripheral surface of the snap-fit ​​connector; the workpiece is provided with an installation mating part corresponding to the snap-fit ​​connector, and when the push tube pushes the snap-fit ​​connector into the installation mating part, the workpiece is snapped into the step.

[0025] By adopting the above technical solution, the assembly can be completed simply by pushing it in axially during installation. The process of pushing the tube out will not bring out the buffer pad, which effectively solves the problem of the flexible buffer pad shifting or falling off due to the release of gripping force in automated assembly. No additional fasteners or bonding processes are required, and the structure is simple.

[0026] In summary, the present invention has the following beneficial effects: 1. The system employs a worktable equipped with an oiling station, a buffer pad loading station, an inspection station, and a rotary table. A detachable workpiece positioning seat is mounted on the rotary table. The rotary table is connected to a rotating mechanism, which drives the rotary table to rotate. This allows the workpiece positioning seat to sequentially pass through the oiling station, buffer pad loading station, and inspection station along a preset path, achieving automated workpiece transfer and processing across multiple processes. The detachable design of the workpiece positioning seat allows for quick replacement of the positioning seat when dealing with products of different shapes and sizes, enabling production line changes and improving equipment capacity and utilization. The coordination between the rotary table and the rotating mechanism ensures repeatable positioning accuracy during station switching, guaranteeing consistent processing quality.

[0027] 2. A push tube and a push tube drive assembly are installed at the buffer pad feeding station. A vibratory feeder for storing and conveying the buffer pads is also set on the worktable. The buffer pad has an insertion hole in the center for the push tube. The push tube drive assembly drives the push tube to insert into the insertion hole of the buffer pad at the end of the vibratory feeder's conveying path, and moves the buffer pad to the workpiece on the workpiece positioning seat corresponding to the buffer pad feeding station position. The vibratory feeder realizes the automated alignment and feeding of the buffer pads. Combined with the push tube insertion feeding mechanism, the structure is simple and the operation is reliable. Compared with the traditional vacuum suction cup for picking up soft buffer pads, which is prone to falling or tilting, the push tube insertion hole method for hard picking has a high success rate and can ensure that the buffer pad's posture remains stable during the transfer process, effectively ensuring the accuracy of the installation position.

[0028] 3. An assembly component is installed between the piston rod and the push tube drive mechanism. The assembly component includes a primary assembly component detachably connected to the piston rod, and a secondary assembly component detachably connected to the primary assembly component. The push tube drive mechanism is installed on the secondary assembly component. When it is necessary to repair the push tube drive mechanism or replace the push tube with a different specification, the primary assembly component, together with the secondary assembly component and the push tube drive mechanism, can be removed from the piston rod without disassembling the piston rod component. Alternatively, the secondary assembly component, together with the push tube drive mechanism, can be removed from the primary assembly component. This allows for flexible replacement according to maintenance and product processing needs, effectively reducing the number of parts to be replaced. It also shortens changeover and maintenance time and enhances the equipment's adaptability to different product models.

[0029] 4. An AOI (Automated Optical Inspection) vision device is installed at the inspection station. The camera light source of the AOI vision inspection device is located above the workpiece positioning seat corresponding to the inspection station. It is used to detect whether the workpiece on the workpiece positioning seat has been oiled and whether a buffer pad has been installed. The use of AOI vision inspection device to replace manual visual inspection realizes online, fully automatic, and non-contact inspection of the two key processes of oiling and pad installation. The device can quickly and accurately identify common defects such as oil leakage, insufficient oiling, missing buffer pads, or misaligned buffer pads, and promptly alarm or control the downstream rejection mechanism to effectively prevent defective products from flowing into the subsequent assembly stage. It plays a quality control role in ensuring the sealing and durability of the final product. Attached Figure Description

[0030] Figure 1 This is a perspective view of the present invention.

[0031] Figure 2 This is a top view of the present invention used to illustrate the oil injection station, the buffer pad feeding station, the inspection station, and the rotary table.

[0032] Figure 3 This is a schematic diagram of the oil injection station of the present invention.

[0033] Figure 4 This is a cross-sectional view of the oil injection mechanism of the present invention.

[0034] Figure 5 This is a schematic diagram of the buffer pad feeding station of the present invention.

[0035] Figure 6 This is the present invention. Figure 5 Enlarged view of point A in the middle.

[0036] Figure 7 This is a cross-sectional view of the docking of the primary assembly head and the secondary assembly head of the present invention.

[0037] Figure 8 This is a cross-sectional view of the push tube and buffer pad of the present invention in the inserted state.

[0038] Figure 9 This is a schematic diagram of the testing station of the present invention.

[0039] In the diagram: 1. Workbench; 12. Oil injection station; 13. Buffer pad loading station; 14. Inspection station; 15. Rotary table; 151. Workpiece positioning seat; 211. Screw valve; 212. Syringe seat; 213. Filter nozzle; 214. Injection needle; 215. Oil injection hole; 22. Oil injection drive mechanism; 31. Push tube; 331. Base; 332. Upper arm; 333. Lower arm; 334. Cylinder; 335. Air pipe; 336. Liver 4. Push rod; 5. Vibratory feeder; 6. Buffer pad; 7. Insertion hole; 8. Snap-fit ​​connector; 9. Radial protrusion; 10. Stepped part; 11. Push tube drive mechanism; 12. Primary assembly; 13. Primary assembly head; 14. Positioning groove; 15. Butt joint; 16. Protrusion; 17. Secondary assembly; 18. Secondary assembly head; 19. Positioning protrusion; 20. Butt joint hole; 10. AOI visual inspection device. Detailed Implementation

[0040] The invention will now be further described with reference to the accompanying drawings.

[0041] An automated device for installing and oiling cushioning pads, capable of producing multiple interchangeable products, such as... Figure 1-9As shown, the system includes a horizontally positioned workbench 1, which is equipped with an oiling station 12, a buffer pad loading station 13, an inspection station 14, and a rotary table 15. The upper surface of the workbench 1 is divided into several functional areas, specifically including the oiling station 12, the buffer pad loading station 13, and the inspection station 14. A rotary table 15 is installed in the central area. The rotary table 15 is a circular turntable structure, rotatably connected to the workbench 1 via a bearing seat at its bottom. Multiple mounting positions are distributed circumferentially on the upper surface of the rotary table 15. Each mounting position is detachably fixed with a workpiece positioning seat 151 by bolts or quick-change clamps. The workpiece positioning seat 151 is designed to mimic the specific shape of the product to be processed. When it is necessary to change the product model, only the workpiece positioning seat needs to be replaced. The workpiece positioning seat 151 is sufficient, without modifying the main structure of the equipment; the rotary table 15 is connected to a rotating mechanism via a coupling or gear transmission mechanism, preferably a cam divider driven by a servo motor, which can achieve high-precision indexing rotation; during equipment operation, the operator or loading robot places the workpiece to be processed on the workpiece positioning seat 151 located in the loading waiting area, and then the rotating mechanism drives the rotary table 15 to rotate intermittently according to the preset control program, so that the workpiece positioning seat 151 with the workpiece is sequentially and accurately passed through the oiling station 12 to complete the coating of lubricating grease, through the buffer pad loading station 13 to complete the pressing of the buffer pad 41, and finally through the inspection station 14 to inspect the completion of the process. By setting up an integrated oiling, feeding, and inspection station 14 and a rotatable rotary table 15 on the workbench 1, the automatic transfer and processing of workpieces between multiple processes is realized; the workpiece positioning seat 151 adopts a detachable design, which allows for quick replacement of the positioning seat when dealing with products of different shapes and sizes, thereby realizing the production line changeover and improving the equipment's production capacity and equipment utilization rate; the cooperation between the rotary table 15 and the rotation mechanism ensures the repeatability of the positioning accuracy during station switching and ensures the consistency of processing quality.

[0042] Preferably, four workpiece positioning seats 151 are configured, and the four workpiece positioning seats 151 are evenly distributed on the circumferential edge of the upper surface of the rotary table 15. The included angle between the centers of two adjacent workpiece positioning seats 151 is 90 degrees. Correspondingly, the oiling station 12, the buffer pad loading station 13, and the inspection station 14 are evenly spaced along the circumference of the rotary table 15. A specific layout example is as follows: the oiling station 12 is located at the nine o'clock position, the buffer pad loading station 13 is located at the twelve o'clock position, the inspection station 14 is located at the three o'clock position, and the six o'clock position is left empty to form a loading waiting area as an operation window for manual or robotic loading and unloading. The oiling station 12, the buffer pad loading station 13, and the inspection station 14 are precisely aligned vertically with three consecutive workpiece positioning seats 151. The rotating mechanism is configured to drive the rotary table 15 to rotate precisely 90 degrees each time. At the start of a cycle, the workpiece is placed on the workpiece positioning seat 151 at the six o'clock position. The rotary table 15 rotates 90 degrees, and the workpiece positioning seat 151 reaches the oiling station 12 for oiling. At the same time, a new workpiece is placed on the workpiece positioning seat 151 in the loading waiting area. After rotating 90 degrees again, the oiled workpiece reaches the buffer pad loading station 13 to install the buffer pad 41, and so on. Through the above structural design, a highly efficient parallel processing cycle is formed. At any indexing stop time, the three actions of oiling, pad loading, and inspection can be performed simultaneously, eliminating the waiting time between processes and improving the output efficiency per unit time. At the same time, the symmetrical layout makes the rotary table 15 evenly stressed, which is conducive to the stability of long-term operation and the maintenance of rotational accuracy.

[0043] Preferably, the oil injection station 12 is equipped with an oil injection mechanism and an oil injection drive mechanism 22 for driving the displacement of the oil injection mechanism. The oil injection drive mechanism 22 is preferably a three-axis servo linear module, which can drive the oil injection mechanism to move in the X, Y, and Z directions to adapt to the position changes of the oil injection points of different workpieces. The oil injection mechanism includes a screw valve 211 for precisely controlling the oil output. The oil inlet of the screw valve 211 is connected to the oil supply pump through a pipeline. The lower end of the screw valve 211 is connected to a syringe seat 212, and the syringe seat 212 has a flow channel inside. A high-density filter nozzle 213 is installed at the oil outlet of the filter nozzle 211 to filter out tiny impurities in the grease and prevent clogging. A slender stainless steel injection needle 214 is fitted over the filter nozzle 213. Oil injection holes 215 are formed on both sides of the end of the injection needle 214 facing away from the filter nozzle 213. During oil injection, the oil injection drive mechanism 22 moves the injection needle 214 above the lubrication hole on the workpiece and lowers it. The screw valve 211 rotates to quantitatively output grease. After being filtered by the filter nozzle 213, the grease is squeezed out from the oil injection holes 215 and precisely coated onto the inner wall of the workpiece. The structure of the screw valve 211 and the precision injection needle 214 achieves high-precision quantitative coating of micro-volume lubricating grease, avoiding the uneven oil distribution and waste problems caused by traditional brush oiling. The filter nozzle 213 effectively intercepts particulate matter in the grease, preventing clogging of the oil injection holes 215 and ensuring the continuity and reliability of the oiling process.

[0044] Preferably, the buffer pad loading station 13 is equipped with a push tube 31 and a push tube drive assembly for driving the displacement of the push tube 31. The workbench 1 is also equipped with a vibratory feeder 4 for storing and conveying the buffer pads 41. The inner wall of the vibratory feeder 4 is provided with a spiral rising track for sorting and orderly conveying the randomly stacked buffer pads 41. The buffer pads 41 are made of rubber or silicone, and have an insertion hole 411 in the center for the push tube 31 to be inserted. The end of the linear feeder of the vibratory feeder 4 is provided with a material distribution and positioning groove. During operation, the vibratory feeder 4 conveys the buffer pads 41 one by one to the positioning groove. In the slot, the insertion hole 411 of the buffer pad 41 faces the vertical direction. The push tube drive assembly drives the push tube 31 to move to the positioning slot, so that the end of the push tube 31 is aligned with the insertion hole 411 and inserted. The buffer pad 41 is picked up by the friction or interference fit between the push tube 31 and the insertion hole 411. Then, the push tube drive assembly moves the push tube 31 carrying the buffer pad 41 to the workpiece positioning seat 151 above the position corresponding to the buffer pad loading station 13. After aligning with the mounting hole on the workpiece, the push tube 31 presses down to press the buffer pad 41 into the workpiece hole. Then the push tube 31 is withdrawn in the reverse direction to complete the installation. The vibration plate 4 is used to realize the automated alignment and feeding of the buffer pad 41. Combined with the push tube 31 insertion feeding mechanism, the structure is simple and the operation is reliable. Compared with the traditional vacuum suction cup, which is prone to falling or tilting when picking up soft buffer pad 41, the push tube 31 is inserted into the insertion hole 411 for hard picking, which has a high success rate and can ensure that the buffer pad 41 remains stable during the transfer process, effectively ensuring the accuracy of the installation position.

[0045] Preferably, the diameter of the push tube 31 is gradually reduced along its end direction (i.e., away from the drive end), forming a tapered tube head with a small taper; the diameter of the insertion hole 411 is gradually reduced along the direction away from the end face of the buffer pad 41 (i.e., the direction in which the push tube 31 is inserted). When the push tube 31 is inserted into the insertion hole 411, as the insertion depth increases, the tapered outer wall of the push tube 31 gradually fits against the tapered inner wall of the insertion hole 411, eventually forming a tight tapered fit. This fit not only provides axial friction to prevent the buffer pad 41 from slipping, but also provides radial tension force. During high-speed conveying, the buffer pad 41 will not rotate or fall off relative to the push tube 31 due to inertia or slight collisions, improving the material conveying stability under high-speed operation. Moreover, the tapered fit structure gives the push tube 31 an automatic centering function during insertion. Even if there is a slight eccentricity error in the position of the buffer pad 41 at the feeding end of the vibratory feeder 4, the push tube 31 can still be smoothly inserted and its posture corrected by the tapered guide.

[0046] Preferably, the push tube drive assembly includes a robotic arm mechanism, which includes a base 331, a large arm 332 movably connected to the base 331, and a small arm 333 movably connected to the large arm 332. The large arm 332 is driven by a first servo motor and can rotate relative to the base 331 in a vertical direction. The small arm 333 is driven by a second servo motor and can rotate relative to the large arm 332 in a vertical direction. A cylinder 334 is fixedly installed on the end housing of the small arm 333. The cylinder 334 is connected to an external air source and a solenoid valve through an air pipe 335. A vertically downward piston rod 336 is driven internally in the cylinder 334. The lower end of the piston push rod 336 is connected to a push tube drive mechanism 5 (specifically a tilting cylinder), and the push tube 31 is installed at the execution end of the push tube drive mechanism 5. When the solenoid valve controls the air pipe 335 to intake air, the air pressure in the cylinder 334 pushes the piston push rod 336 to move rapidly downward in the vertical direction, driving the push tube 31 to perform the material picking and inserting action. When the solenoid valve reverses the exhaust direction, the piston push rod 336 moves upward and resets under the action of reverse air pressure, completing the tube retraction action after material release. The rotational motion of the upper arm 332 and the lower arm 333 is responsible for rapidly moving the push tube 31 between the material picking point of the vibratory plate 4 and the workpiece installation point in the horizontal plane. Using a robotic arm mechanism as the drive component replaces the traditional linear module connection, which has the advantages of fast movement speed, small space occupation, and flexible programming. Integrating the vertical drive of the cylinder 334 to push the tube 31 into the end of the lower arm 333 realizes the decoupled motion control of "rapid horizontal positioning and precise vertical insertion and extraction", simplifying the control algorithm.

[0047] Preferably, an assembly is provided between the piston push rod 336 and the push tube drive mechanism 5. The assembly includes a primary assembly 61 and a secondary assembly 62. The upper end of the primary assembly 61 has a threaded hole or pin hole and is detachably connected to the lower end of the piston push rod 336 by screws or pins. The lower end face of the secondary assembly 62 is machined with a mounting flange. The push tube drive mechanism 5 (e.g., a tilting cylinder) is detachably fixed to the secondary assembly 62 by bolts. A quick-change structure is adopted between the primary assembly 61 and the secondary assembly 62. Connection; When it is necessary to repair the push tube drive mechanism 5 or replace the push tube 31 of different specifications, the first-level assembly 61, together with the second-level assembly 62 and the push tube drive mechanism 5, can be removed from the piston push rod 336 as a whole without disassembling the piston push rod 336. Alternatively, the second-level assembly 62, together with the push tube drive mechanism 5, can be removed from the first-level assembly 61. It can be flexibly replaced according to maintenance and product processing needs, which can effectively reduce the replacement of parts as needed, and shorten the changeover time and maintenance time, while also enhancing the adaptability of the equipment to different models of products.

[0048] Preferably, the primary assembly 61 includes a disc-shaped primary assembly head 611, and the secondary assembly 62 includes a secondary assembly head 621 corresponding to the primary assembly head 611 and having the same diameter. A positioning protrusion 622 (preferably a conical protrusion) is provided on the end face of the secondary assembly head 621 near the primary assembly head 611. A positioning groove 612 corresponding to the positioning protrusion 622 is provided on the end face of the primary assembly head 611 near the secondary assembly head 621. The primary assembly head 611 extends toward the secondary assembly head 621 and forms a cylindrical mating portion 613. The primary assembly head 621 has a center-mounted docking hole 623 that matches the docking portion 613. Several protrusions 614, each a semi-circular dot, are distributed circumferentially on the circumferential sidewall of the docking portion 613. When the primary assembly head 611 and the secondary assembly head 621 align, the positioning protrusion 622 is first inserted into the positioning groove 612 to achieve circumferential angle positioning. At this time, the docking portion 613 extends into the docking hole 623, and the protrusions 614 are compressed, forming an interference fit with the inner wall of the docking hole 623. The interference friction locks the primary assembly head 611 and the secondary assembly head 621 together, preventing axial and circumferential movement. This structural design not only provides reliable connection rigidity, preventing minor vibration gaps during high-speed movement, but also facilitates easy replacement, meeting both high-precision positioning and rapid assembly requirements.

[0049] Preferably, the inspection station 14 is equipped with an AOI (Automated Optical Inspection) vision inspection device. The AOI vision inspection device 7 includes a support column installed on the workbench 1, a horizontal adjustment arm fixed to the top of the column, and an industrial camera and a ring light source installed at the end of the adjustment arm. The ring light source is located directly above the workpiece positioning seat 151 corresponding to the inspection station 14. Its illumination angle is adjustable and can provide shadowless diffuse reflection illumination for the camera. The industrial camera shoots vertically downwards. Its lens focal length and exposure parameters are calibrated for the reflective characteristics of the oil film after oiling and the material color of the buffer pad 41. The control system has a standard image template of qualified workpieces pre-stored. When the workpiece positioning seat 151 carrying the processed workpiece rotates with the rotary table 15 to the inspection station 14 and stops, the AOI vision inspection device 7 triggers the taking of a picture to obtain the current workpiece image. The image processing software compares and analyzes whether there are oil stains on the workpiece surface (to determine whether oiling is completed) and whether there are outline features of the buffer pad 41 in the hole (to determine whether the buffer pad 41 is installed), thereby outputting a "qualified" or "unqualified" signal. The use of AOI visual inspection device 7 to replace manual visual inspection enables online, fully automated, and non-contact inspection of the two key processes of oil injection and gasket installation. This device can quickly and accurately identify common defects such as oil leakage, insufficient oil injection, missing or misaligned buffer gasket 41, and promptly alarm or control the downstream rejection mechanism. This effectively prevents defective products from flowing into subsequent assembly stages and plays a quality control role in ensuring the sealing and durability of the final product.

[0050] Preferably, the end of the buffer pad 41 opposite to the insertion hole 411 is integrally formed with a snap-fit ​​connector 412. The outer surface of the snap-fit ​​connector 412 is integrally formed with a radial protrusion 413, and a step portion 414 is formed between the radial protrusion 413 and the outer peripheral surface of the snap-fit ​​connector 412. The workpiece is provided with a mounting mating part corresponding to the snap-fit ​​connector 412 (i.e., a mounting hole or mounting groove adapted to the snap-fit ​​connector 412). During installation, the push tube 31 is inserted into the insertion hole 411, carrying the buffer pad 41 to move above the workpiece, aligning the snap-fit ​​connector 412 with the workpiece. As the mounting joint is installed, the push tube 31 continues to advance axially. Under the pushing force, the annular protrusion undergoes elastic deformation and squeezes past the edge of the mounting hole until the radial protrusion 413 completely crosses the mounting joint (mounting hole opening or mounting groove opening). At this point, the edge of the workpiece mounting joint falls into and abuts against the step 414. The workpiece is snapped and confined between the step 414 and the radial protrusion 413, completing the axial snap-fit ​​positioning of the buffer pad 41 and the workpiece. Subsequently, the push tube 31 withdraws in the reverse direction from the insertion hole 411, and the buffer pad 41 remains on the workpiece by the snap-fit ​​structure. Through the above structural design, assembly can be completed by simply pushing the tube 31 axially. The process of the push tube 31 withdrawing will not bring out the buffer pad 41, effectively solving the problem of the flexible buffer pad 41 shifting or falling off due to the release of gripping force in automated assembly. No additional fasteners or adhesive processes are required, and the structure is simple.

[0051] To further ensure the smooth disengagement of the push tube 31, a clearance fit or a small interference fit of conical surfaces is preferably adopted between the insertion hole 411 and the push tube 31, so that the resistance to pulling out the push tube 31 is less than the holding force of the snap-fit ​​structure.

[0052] The above description is only a preferred embodiment of the present invention. Therefore, all equivalent changes or modifications made to the structure, features and principles described in the claims of this patent application are included in the scope of this patent application.

Claims

1. An automatic installation and oiling device for interchangeable production of multiple products, comprising a workbench (1), characterized in that: The workbench (1) is provided with an oiling station (12), a buffer pad loading station (13), an inspection station (14), and a rotary table (15). The rotary table (15) is detachably provided with a workpiece positioning seat (151). The rotary table (15) is connected to a rotating mechanism, which drives the rotary table (15) to rotate so that the workpiece positioning seat (151) passes through the oiling station (12), the buffer pad loading station (13), and the inspection station (14) in sequence according to a preset path.

2. The automatic installation and oiling equipment for interchangeable production of multiple products as described in claim 1, characterized in that: The workpiece positioning seats (151) are configured in four and are evenly distributed on the rotary table (15). The oil injection station (12), the buffer pad loading station (13) and the detection station (14) are evenly spaced along the circumference of the rotary table (15) and correspond to the positions of three consecutive workpiece positioning seats (151). The rotary table (15) switches the workpiece positioning seat (151) to the next station every 90 degrees of rotation.

3. The automatic installation and oiling equipment for interchangeable production of multiple products as described in claim 1 or 2, characterized in that: The oil injection station (12) is provided with an oil injection mechanism and an oil injection drive mechanism (22) for driving the displacement of the oil injection mechanism. The oil injection mechanism includes a screw valve (211) and a syringe seat (212) connected to the screw valve (211). A filter nozzle (213) is provided at the end of the screw valve (211). An injection needle (214) is sleeved on the filter nozzle (213). An oil injection hole (215) is opened at the end of the injection needle (214) away from the filter nozzle (213).

4. The automatic installation and oiling equipment for interchangeable production of multiple products as described in claim 1 or 2, characterized in that: The buffer pad loading station (13) is equipped with a push tube (31) and a push tube driving assembly for driving the displacement of the push tube (31). The worktable (1) is also equipped with a vibratory plate (4) for storing and conveying the buffer pad (41). The buffer pad (41) has an insertion hole (411) in the center for the push tube (31) to be inserted. The push tube driving assembly drives the push tube (31) to be inserted into the insertion hole (411) of the buffer pad (41) located at the end of the conveying path of the vibratory plate (4), and moves the buffer pad (41) to the workpiece on the workpiece positioning seat (151) corresponding to the position of the buffer pad loading station (13).

5. The automatic installation and oiling equipment for interchangeable production of multiple products according to claim 4, characterized in that: The diameter of the push tube (31) is gradually reduced along its end direction, and the diameter of the insertion hole (411) is gradually reduced along the direction away from the end face of the buffer pad (41), so that a conical fit is formed between the push tube (31) and the insertion hole (411).

6. The automatic installation and oiling equipment for interchangeable production of multiple products according to claim 4, characterized in that: The push tube drive assembly includes a robotic arm mechanism, which includes a base (331), a large arm (332) movably connected to the base (331), and a small arm (333) movably connected to the large arm (332). The large arm (332) is rotatable relative to the base (331) in a vertical direction, and the small arm (333) is rotatable relative to the large arm (332) in a vertical direction. A cylinder (334) is mounted on the small arm (333). The cylinder (334) is connected to an air pipe (335) and a piston push rod (336) is driven by the cylinder (334). The piston push rod (336) is driven by a push tube drive mechanism (5). The push tube (31) is installed at the execution end of the push tube drive mechanism (5). The cylinder (334) is supplied with air through the air pipe (335) and pushes the piston push rod (336) to move in the vertical direction, so as to drive the push tube (31) to perform material picking or discharging actions.

7. The automatic installation and oiling equipment for interchangeable production of multiple products according to claim 6, characterized in that: An assembly assembly is provided between the piston rod (336) and the push tube drive mechanism (5). The assembly assembly includes a primary assembly (61) detachably connected to the piston rod (336) and a secondary assembly (62) detachably connected to the primary assembly (61). The push tube drive mechanism (5) is mounted on the secondary assembly (62).

8. The automatic installation and oiling equipment for interchangeable production of multiple products according to claim 7, characterized in that: The primary assembly (61) includes a primary assembly head (611), and the secondary assembly (62) includes a secondary assembly head (621) corresponding to the position of the primary assembly head (611). A positioning protrusion (622) is provided on the end face of the secondary assembly head (621) near the primary assembly head (611), and a positioning groove (612) corresponding to the position of the positioning protrusion (622) is provided on the end face of the primary assembly head (611) near the secondary assembly head (621). 611) Extends toward the secondary assembly head (621) and forms a docking part (613). The secondary assembly head (621) has a docking hole (623) adapted to the docking part (613). A plurality of protrusions (614) are provided on the side wall of the docking part (613). When the positioning protrusion (622) engages with the positioning groove (612), the docking part (613) extends into the docking hole (623), and the protrusions (614) are interference-fitted with the inner wall of the docking hole (623).

9. An automatic installation and oiling device for interchangeable production of multiple products, as described in claim 1 or 2, characterized in that: An AOI visual inspection device (7) is provided on the inspection station (14). The camera light source of the AOI visual inspection device (7) is located above the workpiece positioning seat (151) corresponding to the inspection station (14), and is used to detect whether the workpiece on the workpiece positioning seat (151) has been oiled and whether a buffer pad (41) has been installed.

10. The automatic installation and oiling equipment for interchangeable production of multiple products according to claim 4, characterized in that: The buffer pad (41) has a snap-fit ​​connector (412) at one end away from the insertion hole (411). The outer surface of the snap-fit ​​connector (412) has a radial protrusion (413), and a step portion (414) is formed between the radial protrusion (413) and the outer peripheral surface of the snap-fit ​​connector (412). The workpiece has an installation mating part corresponding to the snap-fit ​​connector (412). When the push tube (31) pushes the snap-fit ​​connector (412) into the installation mating part, the workpiece is snapped into the step portion (414).

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