Full-automatic lining press-fitting equipment and press-fitting method thereof

Abstract

The invention relates to full-automatic lining press-fitting equipment and a press-fitting method thereof.The full-automatic lining press-fitting equipment comprises a rack and an outer shell feeding unit installed on the rack, and the outer shell feeding unit is used for conducting directional sorting and conveying on outer shells; the lining workpiece feeding unit is used for carrying out directional sorting and conveying on the lining workpieces; the multi-station rotary table unit is used for sequentially and circularly conveying machining objects bearing the outer shell to all functional stations in an intermittent rotation mode; the feeding clamping jaw unit is installed between the outer shell feeding unit and the multi-station rotating disc unit. The multi-station rotary table automatic production line has the advantages that a plurality of functional stations such as outer shell feeding, in-place detection, lining feeding, electric cylinder punching, press fitting detection, concentricity adjustment and final discharging are integrated through the multi-station rotary table unit, continuous and automatic operation of the whole process from single part to combined finished products is achieved, the production efficiency is remarkably improved, and the production cost is reduced. And the labor cost and the labor intensity are greatly reduced.

Description

Technical Field

[0001] This invention relates to a fully automatic liner pressing equipment and its pressing method, belonging to the field of mechanical automation. Background Technology

[0002] In the field of mechanical manufacturing, the press-fitting of bushings, bearings, and other liner components to the outer casing is one of the core assembly processes. These fits often employ interference fits to ensure connection strength and performance. Traditional processes rely primarily on manual operation or semi-automated equipment, with workers performing material loading, press-fitting, and preliminary inspection. This method is not only inefficient and labor-intensive, but also makes it difficult to guarantee product consistency and stability.

[0003] While some existing automated pressing equipment alleviates the burden of manual labor to some extent, its functions are often relatively limited. They typically focus on the pressing action itself, lacking closed-loop control mechanisms such as precise verification of the workpiece's condition before pressing, online detection of depth and concentricity after pressing, and automatic sorting. This makes it easy for minor positioning deviations or incoming material errors to cause quality defects during the pressing process, such as insufficient liner pressing depth, workpiece damage, and misalignment of inner and outer rings, severely affecting the assembly accuracy and service life of the final product.

[0004] Therefore, there is an urgent need for an integrated, fully automated solution in existing technologies. This solution should be able to automate the entire process from automatic feeding, precise positioning, pressing execution, online inspection (including position detection and concentricity correction) to final sorting of qualified products. Through efficient collaboration and closed-loop quality monitoring of various functional units, the production efficiency, accuracy, and product qualification rate of pressing operations can be fundamentally improved. Summary of the Invention

[0005] To overcome the shortcomings of existing technologies, this invention provides a fully automatic lining core pressing device and its pressing method. The technical solution of this invention is as follows: A fully automatic lining core pressing device includes a frame and an outer shell feeding unit mounted on the frame for orienting, sorting, and conveying the outer shell; a lining core feeding unit for orienting, sorting, and conveying the lining cores; a multi-station turntable unit for intermittently and cyclically conveying the processing objects, based on the outer shell, to various functional stations; and a feeding gripper unit installed between the outer shell feeding unit and the multi-station turntable unit for transferring and positioning the outer shell onto the tooling of the multi-station turntable unit. The outer shell positioning detection unit is arranged adjacent to the multi-station turntable unit and is used to detect whether the outer shell on the tooling is positioned correctly. A lining workpiece feeding unit is installed between the lining workpiece feeding unit and the multi-station turntable unit, and is used to transfer the lining workpiece and place it into the pre-positioned outer shell. An electric cylinder stamping unit is arranged adjacent to the multi-station turntable unit and is used to press the liner workpiece into the outer shell and form a combined workpiece after interference fit with the outer shell. The stamping position detection unit, together with the multi-station turntable unit, is used to detect whether the liner workpiece has been pressed into place. The concentricity adjustment unit is arranged adjacent to the multi-station turntable unit and is used to correct the concentricity of the press-fitted outer shell and the lining workpiece. The final unloading unit, arranged adjacent to the multi-station turntable unit, is used to remove the press-fitted assembled workpiece from the multi-station turntable unit; and The qualified and unqualified product sorting unit is connected to the final discharge unit and is used to divert the assembled workpieces to the qualified product area and the unqualified product area according to the test results. Each functional station includes the station corresponding to the outer shell arrival detection unit, the lining core workpiece feeding unit, the electric cylinder stamping unit, the stamping arrival detection unit, the concentricity adjustment unit, and the final discharge unit.

[0006] Both the loading gripper unit and the lining workpiece loading unit include a loading transverse rodless cylinder, a loading gripper lifting cylinder, a loading sliding rail, and loading grippers. The loading sliding rail is fixedly installed on the frame. The cylinder body of the loading transverse rodless cylinder is installed on the loading sliding rail and can move horizontally reciprocating along the loading sliding rail. The cylinder body of the loading gripper lifting cylinder is connected to the slide of the loading transverse rodless cylinder. The loading grippers are installed at the end of the piston rod of the loading gripper lifting cylinder. The loading gripper unit is used to perform a transfer action between the outer shell loading unit and the multi-station turntable unit, gripping the outer shell and placing it on the turntable fixture. The lining workpiece loading station is used to perform a transfer action between the lining workpiece loading unit and the multi-station turntable unit, gripping the lining workpiece and placing it into the positioned outer shell.

[0007] Both the outer casing positioning detection unit and the stamping positioning detection unit include a lifting cylinder, a displacement sensor, and an inspection fixture. The cylinder body of the lifting cylinder is fixedly mounted on the frame, and the end of the piston rod of the lifting cylinder is connected to the inspection fixture, which is used to drive the inspection fixture to insert or withdraw from the center hole of the workpiece in a vertical direction. The displacement sensor is mounted on the frame and is used to detect the actual extension and retraction displacement of the piston rod of the lifting cylinder. The displacement sensor compares the detected actual displacement with a preset standard displacement. If the actual displacement does not reach the standard value, the workpiece is determined to be abnormal and an alarm signal is issued.

[0008] The electric cylinder stamping unit includes an electric cylinder and a stamping head. The cylinder body of the electric cylinder is fixedly mounted on the frame. The end of the push rod of the electric cylinder is connected to the stamping head to provide pressing power. Under the drive of the electric cylinder, the stamping head moves linearly in the vertical direction to press the liner workpiece placed in the outer shell into the outer shell and form a combined workpiece after interference fit with the outer shell.

[0009] The concentricity adjustment unit includes a pressing cylinder and an adjustment fixture. The cylinder body of the pressing cylinder is fixedly mounted on the frame, and the end of the piston rod of the pressing cylinder is connected to the adjustment fixture. The adjustment fixture has a calibration cavity that matches the shape of the assembled workpiece after pressing. The pressing cylinder drives the adjustment fixture to press down, so that the calibration cavity simultaneously encloses and corrects the outer edges of the outer shell and the inner core workpiece to eliminate the concentricity deviation generated after stamping.

[0010] The final discharge unit includes a discharge transverse rodless cylinder, a discharge gripper lifting cylinder, a discharge sliding track, and discharge grippers. The sliding track is fixedly installed on the frame. The cylinder body of the transverse rodless cylinder is installed on the sliding track and can reciprocate horizontally along the sliding track. The cylinder body of the gripper lifting cylinder is connected to the slide table of the transverse rodless cylinder and is driven to move horizontally by the discharge transverse rodless cylinder. The grippers are installed at the piston rod end of the gripper lifting cylinder and are driven to move vertically by the lifting cylinder. The grippers are used to grip the combined workpieces on the multi-station turntable unit at the material picking position. Through the coordinated operation of the discharge transverse rodless cylinder and the gripper lifting cylinder, the combined workpieces are transported and released to the qualified and unqualified product sorting unit.

[0011] The qualified and unqualified product sorting unit includes a sorting transverse cylinder, a qualified product trough, and an unqualified product trough. The unqualified product trough is fixedly installed on the frame. The cylinder body of the sorting transverse cylinder is fixedly installed on the frame, and the piston rod of the sorting transverse cylinder is connected to the qualified product trough, which drives the qualified product trough to reciprocate horizontally directly above the unqualified product trough. In the initial position, the outlet of the qualified product trough is aligned with the downstream qualified product collection box, and at this time, the qualified product trough blocks the outlet path of the unqualified product trough. When it is necessary to sort unqualified products, the sorting transverse cylinder drives the qualified product trough to move horizontally away, so that the outlet of the unqualified product trough is aligned with the unqualified product collection box.

[0012] The multi-station turntable unit includes a turntable drive motor, a cam divider, a turntable, and several tooling fixtures. The output shaft of the turntable drive motor is connected to the input shaft of the cam divider to provide rotational power. The output end of the cam divider is fixedly connected to the central shaft of the turntable to convert the continuous rotational motion of the turntable drive motor into intermittent indexing rotational motion of the turntable. The several tooling fixtures are evenly installed on the turntable in a circular array to support and position the outer shell.

[0013] The multi-station turntable unit is an eight-station turntable, which includes the following stations in sequence according to the rotation direction of the turntable: outer shell loading station, outer shell arrival detection station, lining core loading station, electric cylinder stamping station, stamping arrival detection station, concentricity adjustment station, neutral station, and final unloading station.

[0014] A pressing method based on the aforementioned fully automatic liner pressing equipment includes the following steps: S1. Outer shell loading step: The outer shell loading unit performs orientation sorting and conveying of the outer shell; S2. Outer shell transfer step: The loading gripper unit transfers the sorted outer shells and positions them on the tooling of the multi-station turntable unit; S3. Outer shell placement detection step: The multi-station turntable unit rotates the station carrying the outer shell to the outer shell placement detection unit to detect whether the outer shell is placed in place; S4. Liner workpiece loading step: The lining workpiece loading unit orients, sorts, and transports the lining workpieces, and then transfers and places them into the pre-positioned outer shell. S5. Electric cylinder stamping step: The multi-station turntable unit rotates the outer shell on which the liner workpiece is placed to the electric cylinder stamping unit, and the electric cylinder stamping unit presses the liner workpiece into the inner shell to form an interference fit combined workpiece. S6. Stamping Position Detection Step: The multi-station turntable unit rotates the assembled workpiece to the stamping position detection unit to detect whether the liner workpiece has been pressed into place. S7. Concentricity adjustment step: The multi-station turntable unit rotates the assembled workpiece to the concentricity adjustment unit to correct the concentricity of the press-fitted outer shell and the lining workpiece. S8. Final unloading step: The multi-station turntable unit rotates the assembled workpiece to the final unloading unit, and the final unloading unit removes the assembled workpiece from the multi-station turntable unit; S9. Material sorting step: The qualified and unqualified product sorting unit sorts the assembled workpieces to the qualified product area or the unqualified product area according to the detection results of the shell arrival detection unit and / or the stamping arrival detection unit.

[0015] The advantages of this invention are: 1. By integrating multiple functional stations such as outer shell feeding, arrival detection, liner feeding, electric cylinder stamping, press-fit detection, concentricity adjustment and final discharge into a multi-station turntable unit, the entire process from individual parts to assembled finished products is continuously and automatically operated, which significantly improves production efficiency and greatly reduces labor costs and labor intensity.

[0016] 2. The electric cylinder stamping unit is used as the power source for press fitting, and a multi-station turntable driven by a cam divider is used to ensure the positioning accuracy of each station. The press fitting process is stable and controllable, effectively avoiding workpiece damage or poor fit caused by unstable pressure or stroke, and ensuring the consistency of the interference fit quality of the products.

[0017] 3. It integrates a shell positioning detection unit and a stamping positioning detection unit. By comparing the displacement sensor with the preset standard value in real time, an alarm is immediately triggered once an abnormality is detected, realizing real-time monitoring and closed-loop quality control of the production process, and eliminating the generation of batch defective products from the source.

[0018] 4. A concentricity adjustment unit is set up, which actively corrects the assembled workpiece after press fitting through the adjustment fixture with calibration cavity. It can effectively eliminate concentricity problems caused by press fitting stress release or small deviations, and ensure the shape and position accuracy and performance of the final product. This is a function that traditional press fitting equipment does not have.

[0019] 5. Through the linkage between the final discharge unit and the qualified / unqualified product sorting unit, the equipment can automatically divert finished products to different collection areas according to the test results, realizing automatic sorting and collection of materials, further improving the automated closed loop of the production process, and facilitating subsequent inventory management and quality traceability.

[0020] 6. The design based on the circular turntable makes the equipment compact and occupies a small area. At the same time, each functional unit is relatively independent, and when the size of the workpiece changes, it can be quickly adapted by changing the grippers, tooling, and adjusting the program, giving the equipment good flexibility and reconfigurability, and adapting to the production needs of multiple varieties and small batches. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the main structure of the present invention.

[0022] Figure 2 yes Figure 1 A schematic diagram of the structure of the loading and unloading gripper unit (lining workpiece loading unit).

[0023] Figure 3 yes Figure 1 A schematic diagram of the structure of the outer shell positioning detection unit (stamping positioning detection unit).

[0024] Figure 4 yes Figure 1 A schematic diagram of the structure of the electric cylinder stamping unit.

[0025] Figure 5 yes Figure 1 A schematic diagram of the concentricity adjustment unit.

[0026] Figure 6 yes Figure 1 A schematic diagram of the final discharge unit.

[0027] Figure 7 yes Figure 1 A schematic diagram of the structure of the sorting unit for qualified and unqualified products.

[0028] Figure 8 yes Figure 1 A schematic diagram of the structure of a multi-station rotary table unit.

[0029] Figure 9 yes Figure 1 Top view. Detailed Implementation

[0030] The present invention will be further described below with reference to specific embodiments, and the advantages and features of the present invention will become clearer as a result. However, these embodiments are merely exemplary and do not constitute any limitation on the scope of the present invention. Those skilled in the art should understand that modifications or substitutions can be made to the details and form of the technical solutions of the present invention without departing from the spirit and scope of the present invention, but all such modifications and substitutions fall within the protection scope of the present invention.

[0031] See Figures 1 to 9This invention relates to a fully automatic lining core pressing equipment, comprising a frame and an outer shell feeding unit 1 mounted on the frame for orienting, sorting, and conveying the outer shell; a lining core workpiece feeding unit 2 for orienting, sorting, and conveying the lining core workpieces; a multi-station turntable unit 13 for intermittently and cyclically conveying the workpieces, with the outer shell as the reference, to various functional stations; a feeding gripper unit 3, installed between the outer shell feeding unit 1 and the multi-station turntable unit 13, for transferring and positioning the outer shell onto the tooling of the multi-station turntable unit 13; an outer shell positioning detection unit 4, adjacent to the multi-station turntable unit 13, for detecting whether the outer shell on the tooling is in place; a lining core workpiece feeding unit 5, installed between the lining core workpiece feeding unit 2 and the multi-station turntable unit 13, for transferring and placing the lining core workpiece into the positioned outer shell; and an electric cylinder stamping unit 6, connected to the multi-station... The turntable units are arranged adjacent to each other and are used to press the lining workpiece into the outer shell, forming a combined workpiece after interference fit with the outer shell; the stamping position detection unit 7, adjacent to the multi-station turntable unit 13, is used to detect whether the lining workpiece has been pressed into place; the concentricity adjustment unit 8, adjacent to the multi-station turntable unit 13, is used to correct the concentricity of the pressed outer shell and the lining workpiece; the final discharge unit 9, adjacent to the multi-station turntable unit, is used to remove the pressed combined workpiece from the multi-station turntable unit; and the qualified and unqualified product sorting unit, connected to the final discharge unit, is used to divert the combined workpiece to the qualified product area and the unqualified product area according to the detection results; wherein, each functional station includes the station corresponding to the outer shell position detection unit, the lining workpiece feeding unit, the electric cylinder stamping unit, the stamping position detection unit, the concentricity adjustment unit and the final discharge unit.

[0032] By using a multi-station turntable unit as the core conveying mechanism, multiple functional stations, including outer shell feeding, arrival detection, lining feeding, electric cylinder pressing, pressing detection, concentricity adjustment, and final discharge, are integrated into one. This layout forms a continuous circular automated production line, achieving seamless connection from raw materials to finished products, completely eliminating waiting time and manual transfer between processes, and greatly improving production efficiency.

[0033] The housing positioning detection unit confirms accurate housing positioning before press-fitting, preventing batch defects caused by incorrect foundation positioning. The electric cylinder stamping unit provides stable and precise pressing force and displacement; the subsequent stamping positioning detection unit immediately verifies the pressing results. The concentricity adjustment unit actively corrects for dimensional and positional tolerances generated during press-fitting, which is crucial for ensuring the final assembly accuracy of the product.

[0034] Each functional unit (such as feeding, inspection, and stamping) is independently arranged around the multi-station turntable unit. This modular design makes the equipment structure very compact, saving floor space. At the same time, when it is necessary to change the product model, usually only the tooling on the turntable, the grippers of specific units, or the inspection program need to be changed to quickly adjust the production line, giving the equipment good flexibility and adaptability, and meeting the needs of modern production of multiple varieties and small batches.

[0035] Electric cylinder stamping units replace traditional pneumatic or hydraulic stamping, enabling precise displacement and speed control, ensuring consistent parameters for each press-fitting operation, and avoiding the risks of over-pressing or under-pressing.

[0036] Through the collaborative operation of the final discharge unit and the qualified and unqualified product sorting unit, the equipment can automatically classify and collect finished products based on the test results. This not only achieves complete automation of the end-of-production process, reducing errors and costs associated with manual judgment and sorting, but also facilitates subsequent quality traceability, inventory management, and production data statistics, forming a complete automated production closed loop.

[0037] Both the loading gripper unit and the liner workpiece loading unit include a loading base 20 and a loading transverse rodless cylinder 21, a loading gripper lifting cylinder 22, a loading sliding rail 25, and a loading gripper 24 mounted on the loading base 20. The cylinder body of the loading transverse rodless cylinder 21 is mounted on the loading base 20. The horizontal moving plate on which the loading gripper lifting cylinder 22 is mounted is connected to the slide of the loading transverse rodless cylinder 21 and reciprocates horizontally under the drive of the loading gripper lifting cylinder 22. A loading sliding rail 25 arranged vertically is also mounted on the horizontal moving plate. The vertical moving plate of the loading gripper cylinder 23 is driven by the loading gripper lifting cylinder 22 and slides in cooperation with the loading sliding track 25; the loading gripper 24 is installed at the end of the piston rod of the loading gripper cylinder 23 and is driven by the loading gripper cylinder 23; wherein, the loading gripper unit is used to perform a transfer action between the outer shell loading unit and the multi-station turntable unit, grabbing the outer shell and placing it on the turntable fixture; the lining workpiece loading station is used to perform a transfer action between the lining workpiece loading unit and the multi-station turntable unit, grabbing the lining workpiece and placing it into the already positioned outer shell.

[0038] By combining a rodless loading transverse cylinder with a loading gripper lifting cylinder, precise and rapid separation drive in both horizontal and vertical directions is achieved. This structure decomposes complex spatial motion into two simple linear motions, avoiding the use of complex multi-axis robots. While ensuring accurate and reliable movements, it also makes the entire unit structure very compact, effectively saving equipment space.

[0039] This not only simplifies the manufacturing, assembly, and debugging processes of the equipment, reducing production and maintenance costs, but also greatly enhances the equipment's versatility and interchangeability. When processing workpieces of different specifications, typically only the end gripper components need to be replaced, improving the equipment's flexible production capabilities.

[0040] Both the outer casing positioning detection unit and the stamping positioning detection unit include a positioning base 31, a positioning lifting cylinder, a displacement sensor 32, and an inspection fixture. The cylinder body of the lifting cylinder is fixedly mounted on the frame, and the end of the piston rod of the lifting cylinder is connected to the inspection fixture, which is used to drive the inspection fixture to insert or withdraw from the center hole of the workpiece in a vertical direction. The displacement sensor is mounted on the positioning base 31 and is used to detect the actual extension and retraction displacement of the piston rod of the lifting cylinder. The displacement sensor compares the detected actual displacement with a preset standard displacement. If the actual displacement does not reach the standard value, the workpiece is determined to be abnormal and an alarm signal is issued.

[0041] The displacement sensor 32 is used to directly measure the extension and retraction of the piston rod of the lifting cylinder. This detection method directly reflects the actual physical state of the workpiece (such as whether it exists or whether it is in position), avoiding the errors that may be caused by complex calculations through indirect parameters (such as air pressure and images). The detection results are accurate, reliable, and have strong anti-interference ability.

[0042] By comparing the actual displacement with the preset standard displacement, quantitative measurement is achieved. This enables the equipment not only to determine whether a workpiece is "present" or not, but also to accurately determine whether its "position is correct." This allows it to proactively identify subtle defects such as improper installation or insufficient pressing depth, and provides a precise basis for subsequent automatic sorting and system alarms. It is a key link in achieving closed-loop control of production quality.

[0043] The electric cylinder stamping unit includes an electric cylinder 41, a stamping head 42, and a stamping platform 43. The cylinder body of the electric cylinder 41 is fixedly mounted on the frame. The end of the push rod of the electric cylinder 41 is connected to the stamping head 42 to provide pressing power. The stamping platform 43 is located at the lower part of the stamping head 42 and corresponds to the stamping head 42. Under the drive of the electric cylinder 41, the stamping head 42 moves linearly in the vertical direction, pressing the liner workpiece placed in the outer shell into the outer shell, and forming a combined workpiece after interference fit with the outer shell.

[0044] Using an electric cylinder as the power source enables precise control of pressing speed, position, and thrust, ensuring consistent parameters in each pressing process and effectively avoiding problems such as uneven pressing force and poor positioning accuracy caused by pressure fluctuations or the compressibility of the medium in traditional pneumatic or hydraulic pressing.

[0045] The concentricity adjustment unit includes a concentricity adjustment base 51, an adjustment head 52, an upper adjustment cylinder 53, and a lower adjustment cylinder 54. The upper adjustment cylinder 53, arranged vertically, is mounted on the upper part of the concentricity adjustment base 51, and the lower adjustment cylinder 54, also arranged vertically, is mounted on the lower part, corresponding to the upper adjustment cylinder 53. The adjustment head 52 is mounted on the lower adjustment cylinder 54. Through the synchronous, opposite movement of the upper and lower adjustment cylinders, a balanced correction force can be applied to the outer shell and the liner workpiece of the assembled workpiece. This symmetrical force application method effectively avoids secondary eccentricity or workpiece damage caused by unilateral pressure, ensuring the stability and accuracy of the concentricity correction process. The adjustment head is mounted on the lower adjustment cylinder and precisely aligned with the upper adjustment cylinder, forming a stable closed-loop force frame. This structure enhances the overall rigidity of the unit, effectively suppressing vibration and sway during adjustment, ensuring repeatability and process consistency.

[0046] The final discharge unit includes a discharge base 61 and a discharge transverse rodless cylinder 62, a discharge gripper lifting cylinder 63, a discharge sliding rail 64, a discharge gripper cylinder 65, and a discharge gripper 66 mounted on the discharge base 61. The cylinder body of the discharge transverse rodless cylinder 62 is mounted on the discharge base 61. The horizontal moving plate of the discharge gripper lifting cylinder 63 is connected to the slide of the discharge transverse rodless cylinder 62 and reciprocates horizontally under the drive of the discharge gripper lifting cylinder 63. A vertically arranged discharge lifting guide rail 64 is also mounted on the horizontal moving plate. The vertical moving plate of the discharge gripper cylinder 65 is driven by the discharge gripper lifting cylinder 63 and slides in cooperation with the discharge sliding rail 64. The discharge gripper 65 is mounted on the end of the piston rod of the discharge gripper cylinder 64 and is driven by the discharge gripper cylinder 64. The separate drive system of the rodless discharge lateral movement cylinder and the discharge gripper lifting cylinder decomposes the complex spatial pick-and-place trajectory into two independent linear movements: horizontal lateral movement and vertical lifting. This design simplifies the control logic and improves positioning accuracy and operational reliability. The discharge gripper cylinder directly drives the gripper to complete the gripping and releasing, resulting in rapid response. The overall coordinated operation enables efficient and continuous pick-and-place cycles, helping to improve the cycle time and capacity of the entire production line.

[0047] The discharge gripper is used to pick up the assembled workpieces from the multi-station turntable unit at the picking position. Through the coordinated operation of the discharge lateral movement rodless cylinder and the discharge gripper lifting cylinder, the assembled workpieces are transported and released to the qualified and unqualified product sorting unit. The coordinated operation of the discharge lateral movement rodless cylinder and the discharge gripper lifting cylinder decomposes the complex picking and placing actions into two linear movements: horizontal lateral movement and vertical lifting. This motion method has a simple and direct trajectory, a fast cycle time, and can efficiently and accurately pick up workpieces from the turntable and smoothly transport them to the sorting unit, ensuring smooth and efficient logistics at the end of the production line.

[0048] The qualified and unqualified product sorting unit includes a sorting transverse cylinder 70, a qualified product trough 71, and an unqualified product trough 72. The unqualified product trough is fixedly mounted on the frame. The cylinder body of the sorting transverse cylinder is fixedly mounted on the frame, and the piston rod of the cylinder is connected to the qualified product trough, driving the qualified product trough to reciprocate horizontally directly above the unqualified product trough. In its initial position, the outlet of the qualified product trough is aligned with the downstream qualified product collection box, thus blocking the outlet path of the unqualified product trough. When unqualified products need to be sorted, the sorting transverse cylinder drives the qualified product trough to move horizontally away, aligning the outlet of the unqualified product trough with the unqualified product collection box. Only one sorting transverse cylinder is needed to drive the qualified product trough, enabling dual-channel switching. The default state is that the qualified product channel is unobstructed; the cylinder only activates when an unqualified product is detected. This design significantly reduces the frequency of actuator movements, improves response speed, and lowers energy consumption and wear. By vertically stacking the qualified and unqualified material tanks (with qualified products on top) instead of arranging them horizontally side-by-side, it greatly saves the equipment's floor space. This "three-dimensional" design makes the material distribution unit structure very compact, which is conducive to optimizing the overall equipment layout and demonstrates excellent space utilization efficiency.

[0049] The multi-station turntable unit includes a turntable drive motor, a cam divider 81, a turntable 82, and several tooling fixtures. The output shaft of the turntable drive motor is connected to the input shaft of the cam divider 81 to provide rotational power. The output end of the cam divider 81 is fixedly connected to the central shaft of the turntable 82 to convert the continuous rotational motion of the turntable drive motor into intermittent indexing rotational motion of the turntable. The several tooling fixtures are evenly installed on the turntable in a circular array to support and position the outer casing. Using a cam divider as the transmission mechanism can convert the continuous rotational motion of the motor into precise intermittent indexing rotational motion of the turntable. This mechanism has excellent dynamic performance and self-locking characteristics, achieving extremely high repeatability in positioning at each station and providing a solid and stable reference for the operation of each functional station (such as inspection and stamping), effectively avoiding cumulative errors and ensuring stable production cycle time.

[0050] By arranging several tooling fixtures evenly in a circular array, this unit can simultaneously carry multiple workpieces and keep them in different processing or inspection stages within a single cycle. This layout enables parallel operation of multiple processes such as loading, inspection, pressing, and calibration, greatly shortening the overall processing time of a single workpiece and thus significantly improving the equipment's production efficiency and capacity.

[0051] The multi-station turntable unit is an eight-station turntable, which includes the following stations in sequence according to the rotation direction of the turntable: outer shell loading station, outer shell arrival detection station, lining core loading station, electric cylinder stamping station, stamping arrival detection station, concentricity adjustment station, neutral station, and final unloading station.

[0052] The present invention also relates to a pressing method based on the aforementioned fully automatic liner pressing equipment, comprising the following steps: S1. Outer shell loading step: The outer shell loading unit performs orientation sorting and conveying of the outer shell; S2. Outer shell transfer step: The loading gripper unit transfers the sorted outer shells and positions them on the tooling of the multi-station turntable unit; S3. Outer shell placement detection step: The multi-station turntable unit rotates the station carrying the outer shell to the outer shell placement detection unit to detect whether the outer shell is placed in place; S4. Liner workpiece loading step: The lining workpiece loading unit orients, sorts, and transports the lining workpieces, and then transfers and places them into the pre-positioned outer shell. S5. Electric cylinder stamping step: The multi-station turntable unit rotates the outer shell on which the liner workpiece is placed to the electric cylinder stamping unit, and the electric cylinder stamping unit presses the liner workpiece into the inner shell to form an interference fit combined workpiece. S6. Stamping Position Detection Step: The multi-station turntable unit rotates the assembled workpiece to the stamping position detection unit to detect whether the liner workpiece has been pressed into place. S7. Concentricity adjustment step: The multi-station turntable unit rotates the assembled workpiece to the concentricity adjustment unit to correct the concentricity of the press-fitted outer shell and the lining workpiece. S8. Final unloading step: The multi-station turntable unit rotates the assembled workpiece to the final unloading unit, and the final unloading unit removes the assembled workpiece from the multi-station turntable unit; S9. Material sorting step: The qualified and unqualified product sorting unit sorts the assembled workpieces to the qualified product area or the unqualified product area according to the detection results of the shell arrival detection unit and / or the stamping arrival detection unit.

[0053] This invention constructs a complete automated closed loop of "feeding-transfer-inspection-pressing-re-inspection-calibration-sorting". From step S1 to step S9, all steps are seamlessly connected without human intervention. More importantly, it drives the execution of S9 (intelligent sorting) through key quality data from S3 (pre-inspection) and S6 (post-inspection), forming an intelligent decision-making closed loop based on real-time feedback. This improves efficiency while ensuring the reliability and traceability of product quality.

[0054] Each step operates around a multi-station turntable unit, enabling parallel operation of multiple workpieces at different stations and maximizing production efficiency. The method incorporates multiple quality assurance steps: step S3 eliminates the possibility of subsequent processing based on errors; step S6 ensures the result of the core pressing process; and step S7 performs final correction of geometric tolerances. Step S7, as an independent, online correction step, proactively solves the concentricity problem commonly encountered in interference fit pressing. The entire process endows rigid automated production lines with flexible handling capabilities, automatically adapting to and compensating for unavoidable fluctuations during production.

[0055] The specific working process of the fully automatic liner pressing equipment described in this invention is as follows: 1. Loading and Initial Positioning: The outer shell loading unit and the lining workpiece loading unit (usually using a vibratory feeder and a linear vibratory guide rail) respectively orient and sort the disordered outer shell and lining workpiece and transport them to the designated positions. Subsequently, the loading gripper unit, driven by a cylinder, grabs the sorted outer shell and accurately places it onto the tooling of the multi-station turntable unit.

[0056] 2. Circular processing and quality closed loop: The turntable rotates according to a preset cycle, sequentially delivering the workpieces to each station. Outer shell positioning inspection station: The inspection fixture of the outer shell positioning inspection unit is inserted into the center hole of the outer shell under the drive of the lifting cylinder. The displacement sensor detects whether it is positioned correctly, thus preventing subsequent processes from being carried out on the basis of errors.

[0057] Liner workpiece loading station: Another identical loading gripper unit picks up the lining workpiece and places it into the pre-positioned outer shell.

[0058] Electric cylinder stamping station: The electric cylinder of the electric cylinder stamping unit drives the stamping head to press the liner workpiece into the outer shell with precisely controlled force and stroke, forming an interference fit assembly workpiece.

[0059] Stamping position detection station: The stamping position detection unit adopts the same principle as the outer shell position detection to detect whether the lining workpiece has been pressed to the predetermined depth, ensuring the quality of the core process.

[0060] Concentricity adjustment station: Forced mechanical correction of assembled workpieces to actively eliminate concentricity deviations that may be caused by press fitting. This is a key step to ensure the final accuracy of the product.

[0061] Quiet workstation: This workstation serves as a buffer and can be used for process rhythm balancing, equipment maintenance, or quick changeover.

[0062] Final discharge station: The grippers of the final discharge unit remove the assembled workpiece, which has completed all processes, from the turntable.

[0063] 3. Intelligent Sorting and Logistics Destination: The removed workpieces are sent to the qualified and unqualified product sorting unit. This unit judges based on the signals from the two aforementioned detection stations: if it is a qualified product, the qualified product trough remains stationary, and the workpiece falls into the qualified product collection box; if it is an unqualified product, the sorting transverse cylinder drives the qualified product trough to move away, and the workpiece falls into the unqualified product collection box below through the unqualified product trough, thereby achieving automatic sorting.

[0064] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A fully automatic liner pressing device, characterized in that, It includes a frame and an outer casing loading unit mounted on the frame, used for orienting, sorting and conveying the outer casing; The lining workpiece feeding unit is used for the orientation, sorting, and conveying of lining workpieces; The multi-station turntable unit is used to sequentially and cyclically transport the workpiece, which is based on the outer shell, to each functional station in an intermittent rotation manner. A feeding gripper unit is installed between the outer casing feeding unit and the multi-station turntable unit, and is used to transfer and position the outer casing onto the tooling of the multi-station turntable unit; The outer shell positioning detection unit is arranged adjacent to the multi-station turntable unit and is used to detect whether the outer shell on the tooling is positioned correctly. A lining workpiece feeding unit is installed between the lining workpiece feeding unit and the multi-station turntable unit, and is used to transfer the lining workpiece and place it into the pre-positioned outer shell. An electric cylinder stamping unit is arranged adjacent to the multi-station turntable unit and is used to press the liner workpiece into the outer shell and form a combined workpiece after interference fit with the outer shell. The stamping position detection unit, together with the multi-station turntable unit, is used to detect whether the liner workpiece has been pressed into place. The concentricity adjustment unit is arranged adjacent to the multi-station turntable unit and is used to correct the concentricity of the press-fitted outer shell and the lining workpiece. The final discharge unit is arranged adjacent to the multi-station turntable unit and is used to remove the assembled workpiece after pressing from the multi-station turntable unit. as well as The qualified and unqualified product sorting unit is connected to the final discharge unit and is used to divert the assembled workpieces to the qualified product area and the unqualified product area according to the test results. Each functional station includes the station corresponding to the outer shell arrival detection unit, the lining core workpiece feeding unit, the electric cylinder stamping unit, the stamping arrival detection unit, the concentricity adjustment unit, and the final discharge unit.

2. The fully automatic lining core pressing equipment according to claim 1, characterized in that, Both the loading gripper unit and the lining workpiece loading unit include a loading transverse rodless cylinder, a loading gripper lifting cylinder, a loading sliding rail, and loading grippers. The loading sliding rail is fixedly installed on the frame. The cylinder body of the loading transverse rodless cylinder is installed on the loading sliding rail and can move horizontally reciprocating along the loading sliding rail. The cylinder body of the loading gripper lifting cylinder is connected to the slide of the loading transverse rodless cylinder. The loading grippers are installed at the end of the piston rod of the loading gripper lifting cylinder. The loading gripper unit is used to perform a transfer action between the outer shell loading unit and the multi-station turntable unit, gripping the outer shell and placing it on the turntable fixture. The lining workpiece loading station is used to perform a transfer action between the lining workpiece loading unit and the multi-station turntable unit, gripping the lining workpiece and placing it into the positioned outer shell.

3. The fully automatic lining core pressing equipment according to claim 1, characterized in that, Both the outer casing positioning detection unit and the stamping positioning detection unit include a lifting cylinder, a displacement sensor, and an inspection fixture. The cylinder body of the lifting cylinder is fixedly mounted on the frame, and the end of the piston rod of the lifting cylinder is connected to the inspection fixture, which is used to drive the inspection fixture to insert or withdraw from the center hole of the workpiece in a vertical direction. The displacement sensor is mounted on the frame and is used to detect the actual extension and retraction displacement of the piston rod of the lifting cylinder. The displacement sensor compares the detected actual displacement with a preset standard displacement. If the actual displacement does not reach the standard value, the workpiece is determined to be abnormal and an alarm signal is issued.

4. The fully automatic liner pressing equipment according to claim 2 or 3, characterized in that, The electric cylinder stamping unit includes an electric cylinder and a stamping head. The cylinder body of the electric cylinder is fixedly mounted on the frame. The end of the push rod of the electric cylinder is connected to the stamping head to provide pressing power. Under the drive of the electric cylinder, the stamping head moves linearly in the vertical direction to press the liner workpiece placed in the outer shell into the outer shell and form a combined workpiece after interference fit with the outer shell.

5. The fully automatic lining core pressing equipment according to claim 4, characterized in that, The concentricity adjustment unit includes a pressing cylinder and an adjustment fixture. The cylinder body of the pressing cylinder is fixedly mounted on the frame, and the end of the piston rod of the pressing cylinder is connected to the adjustment fixture. The adjustment fixture has a calibration cavity that matches the shape of the assembled workpiece after pressing. The pressing cylinder drives the adjustment fixture to press down, so that the calibration cavity simultaneously encloses and corrects the outer edges of the outer shell and the inner core workpiece to eliminate the concentricity deviation generated after stamping.

6. The fully automatic lining core pressing equipment according to claim 5, characterized in that, The final discharge unit includes a discharge transverse rodless cylinder, a discharge gripper lifting cylinder, a discharge sliding track, and discharge grippers. The sliding track is fixedly installed on the frame. The cylinder body of the transverse rodless cylinder is installed on the sliding track and can reciprocate horizontally along the sliding track. The cylinder body of the gripper lifting cylinder is connected to the slide table of the transverse rodless cylinder and is driven to move horizontally by the discharge transverse rodless cylinder. The grippers are installed at the piston rod end of the gripper lifting cylinder and are driven to move vertically by the lifting cylinder. The grippers are used to grip the combined workpieces on the multi-station turntable unit at the material picking position. Through the coordinated operation of the discharge transverse rodless cylinder and the gripper lifting cylinder, the combined workpieces are transported and released to the qualified and unqualified product sorting unit.

7. The fully automatic lining core pressing equipment according to claim 6, characterized in that, The qualified and unqualified product sorting unit includes a sorting transverse cylinder, a qualified product trough, and an unqualified product trough; the unqualified product trough is fixedly installed on the frame; the cylinder body of the sorting transverse cylinder is fixedly installed on the frame, and the piston rod of the sorting transverse cylinder is connected to the qualified product trough, which is used to drive the qualified product trough to reciprocate in the horizontal direction directly above the unqualified product trough; When the qualified product trough is in its initial position, its outlet is aligned with the downstream qualified product collection box. At this time, the qualified product trough blocks the outlet path of the unqualified product trough. When it is necessary to sort unqualified products, the material separating cylinder drives the qualified product trough to move horizontally away, so that the outlet of the unqualified product trough is aligned with the unqualified product collection box.

8. The fully automatic lining core pressing equipment according to claim 1, characterized in that, The multi-station turntable unit includes a turntable drive motor, a cam divider, a turntable, and several tooling fixtures. The output shaft of the turntable drive motor is connected to the input shaft of the cam divider to provide rotational power. The output end of the cam divider is fixedly connected to the central shaft of the turntable to convert the continuous rotational motion of the turntable drive motor into the intermittent indexing rotational motion of the turntable. The tooling is evenly mounted on the turntable in a circular array to support and position the outer shell.

9. The fully automatic lining core pressing equipment according to claim 8, characterized in that, The multi-station turntable unit is an eight-station turntable, which includes the following stations in sequence according to the rotation direction of the turntable: outer shell loading station, outer shell arrival detection station, lining core loading station, electric cylinder stamping station, stamping arrival detection station, concentricity adjustment station, neutral station, and final unloading station.

10. A pressing method based on the fully automatic liner pressing equipment according to any one of claims 1 to 9, characterized in that, Includes the following steps: S1. Outer shell loading step: The outer shell loading unit performs orientation sorting and conveying of the outer shell; S2. Outer shell transfer step: The loading gripper unit transfers the sorted outer shells and positions them on the tooling of the multi-station turntable unit; S3. Outer shell placement detection step: The multi-station turntable unit rotates the station carrying the outer shell to the outer shell placement detection unit to detect whether the outer shell is placed in place; S4. Liner workpiece loading step: The lining workpiece loading unit orients, sorts, and transports the lining workpieces, and then transfers and places them into the pre-positioned outer shell. S5. Electric cylinder stamping step: The multi-station turntable unit rotates the outer shell on which the liner workpiece is placed to the electric cylinder stamping unit, and the electric cylinder stamping unit presses the liner workpiece into the inner shell to form an interference fit combined workpiece. S6. Stamping Position Detection Step: The multi-station turntable unit rotates the assembled workpiece to the stamping position detection unit to detect whether the liner workpiece has been pressed into place. S7. Concentricity adjustment step: The multi-station turntable unit rotates the assembled workpiece to the concentricity adjustment unit to correct the concentricity of the press-fitted outer shell and the lining workpiece. S8. Final unloading step: The multi-station turntable unit rotates the assembled workpiece to the final unloading unit, and the final unloading unit removes the assembled workpiece from the multi-station turntable unit; S9. Material sorting step: The qualified and unqualified product sorting unit sorts the assembled workpieces to the qualified product area or the unqualified product area according to the detection results of the shell arrival detection unit and / or the stamping arrival detection unit.

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