Trimming equipment for processing flame-retardant rubber sealing element and use method of trimming equipment

Abstract

The invention relates to the technical field of flame-retardant rubber sealing element trimming, and discloses trimming equipment for flame-retardant rubber sealing element processing and a using method of the trimming equipment. A discharging assembly for separating a plurality of flame-retardant rubber sealing elements is arranged on the rear side of the top of a box body; a piston rod of a second air cylinder extends, in the process, a second guide column is reset under the action of second telescopic spring force to drive a supporting frame to move, the supporting frame is made to be separated from the bottom of the flame-retardant rubber sealing piece, and at the moment, a first guide column is pushed to drive a partition plate to move; when the supporting frame is separated from the lower portion of the bottom flame-retardant rubber sealing piece, the bottom flame-retardant rubber sealing piece moves to the upper portion of the clamp on the outer side of the sleeve column, discharging of the flame-retardant rubber sealing pieces can be completed, manual discharging by workers is not needed, and the discharging efficiency is improved. And the working efficiency of trimming is effectively improved, and meanwhile, the labor intensity of workers is reduced.

Description

Technical Field

[0001] This invention relates to the field of flame-retardant rubber seal trimming technology, specifically to a trimming device and its usage method for processing flame-retardant rubber seals. Background Technology

[0002] Rubber seals, as core components of sealing devices, play a crucial role in preventing media leakage in industrial production and equipment operation. These elastic elements compensate for assembly gaps through contact pressure generated by their own deformation, and their performance directly affects the reliability and service life of the sealing system. Flame-retardant rubber seals have irreplaceable advantages in special working conditions such as high temperature and flammability, but their processing technology requires more stringent standards. Traditional trimming processes suffer from the following technical bottlenecks: manual feeding is not only inefficient but also makes it difficult to guarantee workpiece positioning accuracy, leading to unstable trimming quality; stacked seals are prone to interlayer adhesion during processing, affecting the reliability of individual part separation; existing trimming equipment lacks an integrated positioning and smoothing mechanism, and workpiece surface wrinkles directly affect the trajectory accuracy of the trimming tool. In addition, traditional equipment lacks a waste collection system, and the rubber debris generated during processing can easily cause secondary pollution. These defects severely restrict the quality and efficiency of mass production of flame-retardant rubber seals. To address these issues, existing technologies urgently need improvement. Summary of the Invention

[0003] In view of the shortcomings of the existing technology, the purpose of this invention is to provide a trimming device and its usage method for processing flame-retardant rubber seals.

[0004] To achieve the above objectives, the present invention provides the following technical solution: a trimming device for processing flame-retardant rubber seals, comprising a housing, wherein a limiting component, a smoothing component, a feeding component, a discharging component, and a cutting component are sequentially integrated on the housing; the limiting component is used for radial positioning and clamping of the workpiece, the smoothing component is used for flattening the top surface of the workpiece, the feeding component is used for vertical stacking and bottom support of batches of workpieces, the discharging component is used for layer-by-layer separation and transfer of batches of workpieces, and the cutting component is used for trimming the edges of the workpiece.

[0005] In some embodiments, the limiting assembly includes a cylindrical column, an elastic column, and a clamp; the cylindrical column is rotatably connected to the inside of the top side of the housing via a deep groove ball bearing, and a T-shaped groove is formed on the inner wall of the cylindrical column; the bottom of the elastic column is slidably embedded in the T-shaped groove, and a clamp composed of arc-shaped elastic claws is fixedly connected to the top of the elastic column; a gas spring is integrated inside the elastic column, and the extension end of the gas spring is connected to the arc-shaped elastic claws for adjusting the clamping force; a driven plate is fixedly sleeved at the bottom of the cylindrical column, and a motor is installed at the bottom of the inner side of the housing, with the motor output shaft fixedly connected to the driving plate, and the driving plate and the driven plate are connected by a synchronous belt drive.

[0006] In some embodiments, the smoothing assembly includes two rotary pressing cylinders, a first fixed column, and a first connecting plate; the two rotary pressing cylinders are symmetrically fixed to the top of the housing, and their piston rods are connected to the top of the first fixed column through a rotary joint; the bottom of the first fixed column is fixedly connected to the first connecting plate, and the bottom of the first connecting plate is rotatably connected to a fixed shaft, with a polyurethane roller fixedly sleeved on the outside of the fixed shaft; a locking nut is provided between the first connecting plate and the fixed shaft to fix the angle of the roller.

[0007] In some embodiments, the feeding assembly includes a fixed frame, a second fixed post, and a limiting plate; the fixed frame has a through groove at its top, and annular positioning protrusions are provided on the inner walls of both sides of the through groove; the second fixed post has an annular positioning groove on its outer side that matches the annular positioning protrusions, and the second fixed post is slidably inserted into the through groove through the positioning protrusions / grooves; a helical compression spring is sleeved on the outer side of the second fixed post, and the two ends of the helical compression spring are fixed to the top of the fixed frame and the bottom of the limiting plate by adjusting nuts; a second connecting frame is fixedly connected to the top of the limiting plate, and a limit sensor is provided between the second connecting frame and the fixed frame.

[0008] In some embodiments, the feeding assembly includes a vertical plate, a second connecting plate, a partition plate, and a support frame; the second connecting plate is fixedly connected to the rear side of the vertical plate, and a second cylinder is installed on the top of the second connecting plate; a first guide post and a second guide post are symmetrically and movably inserted through the front side of the vertical plate, the front end of the first guide post is fixedly connected to the partition plate, and the front end of the second guide post is fixedly connected to the support frame; a second telescopic spring is sleeved on the outer side of both the first and second guide posts, and the two ends of the second telescopic spring are connected to the vertical plate and the partition plate / support frame through dustproof sleeves; guide posts are symmetrically and fixedly connected to the bottom of the support frame, and guide sleeves are correspondingly provided on the front side of the vertical plate, with the guide posts slidably inserted into the guide sleeves.

[0009] In some embodiments, the cutting assembly includes a gantry-type guide frame, linear guide rails, a servo cylinder, and a trimming tool; the guide frame is fixed to the front top of the housing, and linear guide rails are symmetrically installed inside it; a guide rod is fixedly connected to the slider of the linear guide rail, and a trimming tool is detachably fixedly connected to the front end of the guide rod; a servo cylinder is fixedly installed at the rear end of the guide frame, and the push rod end of the servo cylinder is fixedly connected to the rear end of the guide rod through a connector.

[0010] In some embodiments, the bottom of the box has a material discharge port, and a waste collection box is fixedly connected below the material discharge port; a transparent acrylic protective baffle is provided on the top of the box corresponding to the position of the cutting component, and one side of the protective baffle is hinged to the box; a metal protective cover is provided on the outside of the motor, and a protective cover is provided on the synchronous belt drive part.

[0011] In some embodiments, a PLC controller is provided on the front side of the housing. The PLC controller is electrically connected to the motor, the rotary pressing cylinder, the first cylinder, the second cylinder, the servo electric cylinder, the proximity switch, and the pressure sensor. The pressure sensor is embedded in the elastic column and is used to monitor the clamping force and feed it back to the PLC controller.

[0012] In some embodiments, the inner wall of the arc-shaped elastic gripper is provided with a rubber buffer pad, and the surface of the rubber buffer pad is provided with anti-slip grooves; the surface of the polyurethane roller is provided with diamond-shaped anti-slip patterns.

[0013] To achieve the above objectives, the present invention also provides the following technical solution: a method for using a trimming device for processing flame-retardant rubber seals, characterized by comprising the following steps:

[0014] S1. Material preparation: Place multiple flame-retardant rubber seals on the outside of the second fixed post, push the second fixed post into the fixed frame along the through groove until the limit plate is inserted into the limit groove, and complete the installation of the material feeding assembly; at this time, the bottom rubber seal falls onto the support frame.

[0015] S2, Layer-by-layer feeding: The PLC controller controls the extension of the second cylinder, pushing the partition plate forward to meet the bottom of the bottom rubber seal. At the same time, the support frame moves downward under the action of the second telescopic spring, disengaging from the rubber seal. Then, the PLC controller controls the extension of the rotating pressing cylinder, driving the roller to press down to the top surface of the rubber seal. The motor drives the cylinder to rotate, smoothing the top surface of the rubber seal through the rolling of the roller.

[0016] S3. Positioning and clamping: After smoothing, rotate the pressing cylinder to reset, and the roller disengages from the rubber seal; the PLC controller controls the first cylinder to extend, and pushes the elastic column downward through the connecting column until the arc-shaped elastic jaw clamps the rubber seal. The pressure sensor provides real-time feedback on the clamping force and adjusts the extension and retraction of the air spring.

[0017] S4. Trimming process: The PLC controller controls the servo electric cylinder to start, pushing the guide rod to move along the linear guide rail. The trimming tool trims the edge of the rubber seal. The debris generated during trimming falls into the waste collection box through the discharge port.

[0018] S5. Cyclic operation: After a single trimming is completed, the first cylinder resets and releases the rubber seal, and the second cylinder retracts to reset the support frame and support the next layer of rubber seal. Repeat S2-S4 to complete batch processing.

[0019] Compared with the prior art, the beneficial effects of the present invention are: by integrating the limiting component, smoothing component, feeding component, unloading component and cutting component, automated positioning, layer processing and precise trimming are achieved, which has the advantages of improving processing efficiency, ensuring positioning accuracy, realizing automated operation and optimizing waste collection.

[0020] Details of one or more embodiments of this application are set forth in the following drawings and description to make other features, objects and advantages of this application more readily apparent. The embodiments of this application will provide a detailed description and understanding of the application. Attached Figure Description

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

[0022] Figure 2 This is a schematic diagram of the connecting column structure of the present invention;

[0023] Figure 3 This is a schematic diagram of the bottom structure of the present invention;

[0024] Figure 4 This is a schematic diagram of the fixing frame structure of the present invention;

[0025] Figure 5 This is a schematic diagram of the limiting plate structure of the present invention;

[0026] Figure 6 This is a partial cross-sectional structural diagram of the present invention;

[0027] Figure 7 This is a schematic diagram of the elastic column structure of the present invention.

[0028] Explanation of reference numerals in the attached drawings: 1. Box body;

[0029] 21. Cylindrical column; 22. Slide groove; 23. Elastic column; 24. Clamp; 25. Fixed bearing; 26. First connecting frame; 27. First cylinder; 28. Connecting column;

[0030] 31. Rotary downward pressing cylinder; 32. First fixed column; 33. First connecting plate; 34. Fixing bolt; 35. Fixing shaft; 36. Roller;

[0031] 41. Fixing frame; 42. Through groove; 43. Limiting groove; 44. Second fixing post; 45. Limiting plate; 46. Sleeve post; 47. Fixing plate; 48. First telescopic spring; 49. Second connecting frame;

[0032] 51. Vertical plate; 52. Second connecting plate; 53. First guide post; 54. Partition plate; 55. Second guide post; 56. Support frame; 57. Second telescopic spring; 58. Push plate; 59. Second cylinder;

[0033] 61. Guide frame; 62. Guide rod; 63. Trimming tool; 64. Electric push rod; 65. Connecting parts;

[0034] 7. Motor; 8. Driving disc; 9. Driven disc. Detailed Implementation

[0035] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0036] In the traditional trimming process of rubber seals, the manual loading stage presents a technical contradiction between insufficient positioning accuracy and low processing efficiency. Manual operation makes it difficult to ensure stable radial and axial positioning of the workpiece, leading to misalignment between the trimming tool and the workpiece contact surface, directly affecting the geometric accuracy of the trimming trajectory. Layer misalignment during workpiece stacking causes fluctuations in tool load, which in turn affects the motion stability of the servo drive system.

[0037] For example, in continuous machining scenarios where workpieces are manually stacked, operators need to repeatedly adjust the position of the seals on the support frame, a process that extends the production line cycle time to more than 1.5 times the standard process value. Differences in the coefficient of friction between workpiece layers cause uneven compressive stress on the bottom layer, easily resulting in positioning deviations exceeding 0.5 mm in axial offset during the unloading stage. These deviations are amplified during the rotary clamping process, causing fluctuations in the tool cutting depth of ±0.2 mm, directly leading to a scrap rate exceeding 12%.

[0038] If the above problems are not addressed, the positioning error of the machining system will create a positive feedback loop, accelerating the uneven wear of the tool edge. Burrs remaining on the workpiece edge will interfere with the contact pressure distribution of the subsequent sealing surface, reducing the media barrier performance of the seal under high temperature and high pressure conditions. Increased frequency of manual intervention will also lead to a decrease in the effective operating time of the equipment, causing the unit energy consumption index to rise to 120% of the industry average.

[0039] Faced with the aforementioned problems, this application first considers how to achieve automated coordination between workpiece positioning and the machining process. Traditional manual operation is difficult to guarantee the stacking accuracy and clamping stability of workpieces, thus requiring the establishment of a multi-station linkage mechanical structure system. Through analysis of the workpiece machining path, it was found that radial positioning deviation and axial interlayer misalignment have a coupling effect. Radial clamping force fluctuations exacerbate the unevenness of the tool cutting depth, while incomplete interlayer separation leads to pressure deformation of the workpiece surface. Based on this, this application attempts to spatially decouple the positioning mechanism and the unloading mechanism, while introducing a rotary clamping and elastic compensation mechanism. The rotary clamping can eliminate the error of manual placement angle, and the elastic compensation can absorb the difference in interlayer thickness. It was further found that simply increasing the clamping force will damage the workpiece surface, so a closed-loop control system for clamping force needs to be established. Finally, a modular component integration scheme was adopted, forming a continuous machining closed loop through the sequential coordination of the limiting, smoothing, loading, unloading, and cutting components.

[0040] In this regard, such as Figures 1 to 7 As shown, this application proposes a trimming device for processing flame-retardant rubber seals, including a housing, on which a limiting component, a smoothing component, a feeding component, a discharging component, and a cutting component are sequentially integrated; the limiting component is used for radial positioning and clamping of the workpiece, the smoothing component is used for flattening the top surface of the workpiece, the feeding component is used for vertical stacking and bottom support of batch workpieces, the discharging component is used for layer-by-layer separation and transfer of batch workpieces, and the cutting component is used for trimming the edges of the workpiece.

[0041] The housing is the main structure supporting all functional modules. It can be implemented using a welded metal frame or an injection-molded shell, providing installation reference and protective support for each component. The limiting component is used for radial positioning and clamping of the workpiece, specifically through mechanical clamps or pneumatic grippers combined with a guiding mechanism, ensuring the workpiece maintains a stable posture during processing. The smoothing component is used for flattening the top surface of the workpiece, specifically through a rolling mechanism or a vacuum adsorption platform combined with a pressure regulating device, eliminating wrinkles or deformation on the workpiece surface. The feeding component is used for the vertical stacking and bottom support of batches of workpieces, specifically through a column-type stacking structure combined with a spring buffer device, achieving continuous material supply and reducing manual intervention. The unloading component is used for the layer-by-layer separation and transfer of batches of workpieces, specifically through a cylinder-driven layering pusher or a vacuum suction cup combined with a guide rail, ensuring precise separation and delivery of individual materials to the processing station. The cutting component is used for edge trimming of the workpiece, specifically through a servo-driven tool module or a laser cutting head combined with a motion guide rail, achieving high-precision trimming and adapting to workpieces of different sizes.

[0042] The core innovation of this application lies in forming a continuous processing system by integrating limiting, smoothing, feeding, unloading and cutting components into the box, thereby realizing fully automatic feeding, positioning, leveling and trimming of flame-retardant rubber seals, solving the problems of low efficiency and large positioning error in traditional manual operation, and improving processing accuracy and finished product consistency through component collaborative control.

[0043] The working process and principle of this application are as follows: a limiting component, a smoothing component, a feeding component, a discharging component, and a cutting component are sequentially integrated on the box body. The limiting component is used for radial positioning and clamping of the workpiece, ensuring that the workpiece maintains a stable position during processing through adjustable clamping force. The smoothing component flattens the top surface of the workpiece, eliminating surface unevenness and providing a good foundation for subsequent processing. The feeding component enables the vertical stacking and bottom support of batches of workpieces, improving feeding efficiency. The discharging component is responsible for the layer-by-layer separation and transfer of batches of workpieces, ensuring that individual workpieces can smoothly enter the processing area. The cutting component trims the edges of the workpiece, completing the final shaping process.

[0044] The collaborative working process of each component is as follows: First, the loading component vertically stacks multiple workpieces. The unloading component separates the bottom layer of workpieces and transfers them to the processing area. The limiting component radially positions and clamps the workpieces, ensuring precise positioning. The leveling component then flattens the top surface of the workpieces, providing a smooth surface for cutting. Finally, the cutting component trims the edges of the workpieces. This series of steps is repeated cyclically to achieve continuous processing of batches of workpieces.

[0045] The reasons for selecting key technical features include: adopting a modular design, with each functional component working independently yet collaboratively, improving system flexibility and maintainability; introducing a smoothing component to ensure workpiece surface flatness and improve cutting accuracy; the feeding component enabling layer-by-layer separation to avoid positioning errors caused by manual operation; and the limiting component allowing adjustable clamping force to adapt to workpieces of different specifications while preventing excessive deformation.

[0046] As a preferred embodiment, the solution of this application is implemented as follows: The housing adopts a steel structure to provide stable support. The limiting component includes a rotatable cylinder with a gas spring-adjustable elastic gripper inside for precise clamping. The smoothing component is driven by a rotary pressing cylinder, which drives polyurethane rollers to flatten the workpiece surface. The loading component adopts a fixed frame with a ring positioning structure for quick loading and unloading of stacked workpieces. The unloading component includes a partition plate and a support frame, and the workpieces are separated layer by layer by a cylinder control. The cutting component adopts a gantry structure, equipped with linear guides and servo cylinders to ensure the precise movement of the trimming tool.

[0047] During operation, multiple workpieces are first mounted on the fixed posts of the feeding assembly. The separator plate of the unloading assembly pushes the bottom workpiece forward, while the support frame descends, allowing the workpiece to fall to the processing position. The rollers of the smoothing assembly press down and rotate to flatten the top surface of the workpiece. The elastic grippers of the limiting assembly then clamp the workpiece, with the clamping force adjusted in real time by a pressure sensor. The trimming cutter of the cutting assembly moves along a linear guide to trim the edges of the workpiece. After processing, the limiting assembly releases the workpiece, and the unloading assembly prepares for the next workpiece, thus performing batch processing in a cyclical manner.

[0048] Through the above-described solution, this application achieves automation and precision in the trimming of flame-retardant rubber seals. The adjustable clamping force of the limiting component ensures the stability of the workpiece during processing, reducing processing errors caused by positional deviations. The introduction of the smoothing component effectively improves the surface flatness of the workpiece, providing a good foundation for subsequent cutting. The coordinated operation of the feeding and unloading components significantly improves processing efficiency and eliminates positioning errors caused by manual operation. The precise control of the cutting component ensures the consistency and quality of trimming. The overall solution, through the organic integration of various functional modules, effectively solves the problems of low efficiency and insufficient precision in traditional manual trimming, improving the processing quality and production efficiency of flame-retardant rubber seals.

[0049] This application further proposes a limiting assembly including a cylindrical column, an elastic column, and a clamp; the cylindrical column is rotatably connected to the inside of the top side of the housing via a deep groove ball bearing, and a T-shaped groove is provided on the inner wall of the cylindrical column; the bottom of the elastic column is slidably embedded in the T-shaped groove, and the top of the elastic column is fixedly connected to a clamp composed of arc-shaped elastic claws; a gas spring is integrated inside the elastic column, and the extension end of the gas spring is connected to the arc-shaped elastic claws; a driven plate is fixedly sleeved at the bottom of the cylindrical column, and a motor is installed at the bottom of the inner side of the housing, with the motor output shaft fixedly connected to the driving plate, and the driving plate and the driven plate are connected by a synchronous belt drive.

[0050] The cylindrical column and housing utilize deep groove ball bearings for axial fixation and circumferential rotation. A T-shaped groove and the sliding fit at the bottom of the elastic column create a radially adjustable structure. A gas spring is built into the elastic column cavity, its extension end linked to an arc-shaped elastic gripper via a linkage mechanism. The rubber buffer pads on the inner wall of the gripper are fixed through a vulcanization process. The synchronous belt drive between the driving and driven discs uses a double-sided toothed belt, with the pulley tooth profile matching the belt module. A synchronous belt tensioner with a tension adjustment bolt is located at the bottom of the housing.

[0051] Specifically, when the motor drives the active disc to rotate, the synchronous belt drives the driven disc, causing the entire cylinder to rotate. The elastic column slides radially along the T-shaped groove to accommodate workpieces of different diameters. The gas spring, through internal air pressure regulation, pushes the arc-shaped elastic jaws to generate clamping force. A pressure sensor monitors the deformation of the clamping elasticity in real time and feeds it back to the control system. When the workpiece diameter changes, the elastic column adaptively displaces within the T-shaped groove, and the gas spring automatically compensates for the jaw opening and closing amount, ensuring that the clamping force is always maintained at the set threshold. During the rotation of the cylinder, the deep groove ball bearing bears the axial load, and the mating surface between the T-shaped groove and the elastic column is coated with a graphite lubricant to reduce the coefficient of friction. The synchronous belt drive error is controlled within ±0.1mm.

[0052] As a preferred embodiment, the solution of this application is specifically implemented as follows:

[0053] The limiting assembly includes a cylindrical column, an elastic column, and a clamp. The cylindrical column is rotatably connected to the inside of the top side of the housing via a deep groove ball bearing, and a T-shaped groove is formed on the inner wall of the cylindrical column. The bottom of the elastic column is slidably embedded in the T-shaped groove, and the top of the elastic column is fixedly connected to a clamp consisting of arc-shaped elastic claws. A gas spring is integrated inside the elastic column, and the extension end of the gas spring is connected to the arc-shaped elastic claws for adjusting the clamping force. A driven plate is fixedly sleeved at the bottom of the cylindrical column, and a motor is installed at the bottom of the inner side of the housing. The motor output shaft is fixedly connected to the driving plate, and the driving plate and the driven plate are connected by a synchronous belt drive.

[0054] Furthermore, the cylinder can be made of stainless steel, with a diameter of 100mm and a height of 200mm. The T-slot is 20mm wide and 30mm deep. The elastic column is made of spring steel, with a diameter of 18mm and a height of 180mm. The arc-shaped elastic gripper is made of silicone, with an inner diameter of 90mm and a thickness of 5mm. The gas spring has a maximum stroke of 50mm and a maximum thrust of 500N. Both the driven and driven discs have a diameter of 80mm, and the synchronous belt is a toothed synchronous belt with a length of 600mm. The motor is a servo motor with a rated power of 200W and a maximum speed of 3000rpm.

[0055] Through the above technical solution, this application achieves precise positioning and adjustable clamping of the workpiece. The combination of the elastic column and gas spring allows for flexible adjustment of the clamping force according to the workpiece size and material, avoiding problems such as workpiece deformation due to excessive clamping or workpiece slippage due to excessive clamping. Simultaneously, the motor-driven column rotation design enables the workpiece to rotate 360 ​​degrees during processing, facilitating all-around trimming and improving processing accuracy and efficiency. Furthermore, the use of deep groove ball bearings reduces friction during column rotation, extending equipment lifespan and lowering maintenance costs.

[0056] This application further proposes a smoothing component including two rotary pressing cylinders, a first fixed column, and a first connecting plate; the two rotary pressing cylinders are symmetrically fixed to the top of the housing, and their piston rods are connected to the top of the first fixed column through a rotary joint; the bottom of the first fixed column is fixedly connected to the first connecting plate, and the bottom of the first connecting plate is rotatably connected to a fixed shaft, with a polyurethane roller fixedly sleeved on the outside of the fixed shaft; a locking nut is provided between the first connecting plate and the fixed shaft to fix the angle of the roller.

[0057] The rotary downward cylinder adopts a symmetrical double-cylinder layout, with the piston rod end hinged to the first fixed column via a universal rotary joint; the first connecting plate adopts a rectangular steel plate structure, with its length direction parallel to the width direction of the housing; the two ends of the fixed shaft are rotatably connected to the first connecting plate via deep groove ball bearings; the surface of the polyurethane roller is molded to form a diamond-shaped raised texture, with the texture depth controlled between 0.5-1.2mm; the locking nut adopts a flange structure with a thread specification of M12×1.75, and the tightening torque is controlled between 5-8N·m by using a wrench.

[0058] Specifically, after the workpiece is loaded, the rotating downward pressure cylinder pushes the first fixed column vertically downward, causing the polyurethane roller to contact the top surface of the workpiece. Under the continuous pressure of the cylinder, the roller rolls along the workpiece surface, utilizing the elastic deformation properties of the polyurethane material to eliminate wrinkles on the workpiece surface. The fixed shaft allows the roller to rotate freely through a bearing structure, avoiding scratching the rubber surface. After the smoothing operation is completed, the operator can loosen the locking nut, rotate the roller to an angle of 15°-30° with the workpiece surface, and then re-tighten it to accommodate the processing requirements of rubber materials with different hardness. During this process, the synchronous drive of the dual cylinders ensures uniform distribution of downward pressure, the diamond-pattern design increases the coefficient of friction between the roller and the workpiece, and the flange locking nut provides reliable axial locking force to prevent roller angle deviation.

[0059] As a preferred embodiment, the solution of this application is specifically implemented as follows:

[0060] The smoothing assembly includes two rotary pressing cylinders, a first fixed column, and a first connecting plate. The two rotary pressing cylinders are symmetrically fixed to the top of the housing, and their piston rods are connected to the top of the first fixed column via a rotary joint. The first connecting plate is fixedly connected to the bottom of the first fixed column, and a fixed shaft is rotatably connected to the bottom of the first connecting plate. A polyurethane roller is fixedly sleeved on the outside of the fixed shaft. A locking nut is provided between the first connecting plate and the fixed shaft to fix the angle of the roller.

[0061] Specifically, the rotary downward pressing cylinder uses an SMC brand MSQB series rotary cylinder, and the cylinder's piston rod is connected to the top of the first fixed column via a rotary joint. The first fixed column is made of stainless steel, with a length of 300mm and a diameter of 30mm. The first connecting plate is made of aluminum alloy, with a length of 200mm, a width of 100mm, and a thickness of 10mm. The fixed shaft is made of 45# steel, with a length of 150mm and a diameter of 20mm. The polyurethane roller has an outer diameter of 100mm and a width of 50mm. The locking nut is M16.

[0062] Through the above technical solution, this application achieves automated leveling of the top surface of a workpiece. A rotating pressure cylinder controls the up-and-down movement of the rollers, enabling precise pressure control on the workpiece. The polyurethane rollers possess excellent wear resistance and elasticity, effectively preventing damage to the workpiece surface. The locking nut allows for roller angle adjustment, accommodating workpieces of different shapes. This design improves leveling efficiency and quality, reduces errors from manual operation, and enhances the applicability and flexibility of the device.

[0063] This application further proposes a feeding assembly including a fixed frame, a second fixed column, and a limiting plate; the top of the fixed frame has a through groove, and the inner walls on both sides of the through groove have annular positioning protrusions; the outer side of the second fixed column has an annular positioning groove that matches the annular positioning protrusions, and the second fixed column is slidably inserted into the through groove through the positioning protrusions; a helical compression spring is sleeved on the outer side of the second fixed column, and the two ends of the helical compression spring are fixed to the top of the fixed frame and the bottom of the limiting plate by adjusting nuts; a second connecting frame is fixedly connected to the top of the limiting plate, and a limit sensor is provided between the second connecting frame and the fixed frame.

[0064] The through groove of the fixed frame and the annular positioning groove of the second fixed column form an axial limiting structure to prevent radial displacement when workpieces are stacked. The helical compression spring can be adjusted by adjusting the nut to accommodate weight variations of different numbers of workpieces. The limit sensor determines whether the workpiece stacking has reached the preset height by detecting the relative position of the second connecting frame and the fixed frame.

[0065] Specifically, when a batch of workpieces is placed on the outside of the second fixed post, the annular positioning protrusion is embedded in the annular positioning groove to ensure that the workpieces are stacked vertically. The helical compression spring generates a reverse supporting force when compressed; the spring compression is adjusted by the adjusting nut to ensure stable support for the bottom workpiece. When the workpieces are stacked to a set number of layers, the limit plate triggers the limit sensor on the second connecting frame, stopping further feeding. This structure, through the combination of mechanical positioning and elastic support, maintains the verticality of the stacked workpieces and dynamically adjusts the bottom support force, preventing stack tilting or support failure due to changes in workpiece weight.

[0066] As a preferred embodiment, the solution of this application is implemented as follows: The feeding assembly includes a fixed frame, a second fixed post, and a limiting plate. A through groove is formed at the top of the fixed frame, and annular positioning protrusions are provided on the inner walls of both sides of the through groove. An annular positioning groove matching the annular positioning protrusions is formed on the outer side of the second fixed post, and the second fixed post is slidably inserted into the through groove through the positioning protrusions / grooves. A helical compression spring is sleeved on the outer side of the second fixed post, and both ends of the helical compression spring are fixed to the top of the fixed frame and the bottom of the limiting plate by adjusting nuts. A second connecting frame is fixedly connected to the top of the limiting plate, and a limit sensor is provided between the second connecting frame and the fixed frame.

[0067] Specifically, the mounting bracket is made of aluminum alloy, with a through groove running through its top. Annular positioning protrusions are evenly distributed along the inner wall of the through groove. The second mounting post is made of stainless steel, with an annular positioning groove on its outer side that matches the annular positioning protrusions. The helical compression spring is made of 304 stainless steel, and its ends are secured by adjusting nuts. The limit plate is made of ABS engineering plastic, and a second connecting bracket is fixedly connected to its top. The limit sensor is a proximity switch, installed between the second connecting bracket and the mounting bracket.

[0068] Through the above technical solution, this application achieves automatic feeding and positioning of flame-retardant rubber seals. The cooperation between the annular positioning protrusion and the annular positioning groove ensures the stable sliding of the second fixing post within the through groove. The helical compression spring provides appropriate elastic support force, allowing the limiting plate to flexibly adjust its height. The limit sensor can accurately detect the position of the limiting plate, achieving precise positioning. This design not only improves feeding efficiency but also ensures the accurate positioning of the flame-retardant rubber seals, providing a reliable foundation for subsequent processing.

[0069] This application further proposes a feeding assembly including a vertical plate, a second connecting plate, a partition plate, and a support frame. The second connecting plate is fixedly connected to the rear side of the vertical plate, and a second cylinder is installed on the top of the second connecting plate. The first guide post and the second guide post are symmetrically movable through the front side of the vertical plate. The partition plate is fixedly connected to the front end of the first guide post, and the support frame is fixedly connected to the front end of the second guide post. A second telescopic spring is sleeved on the outer side of both the first guide post and the second guide post. The two ends of the second telescopic spring are connected to the vertical plate and the partition plate / support frame through dustproof sleeves. The bottom of the support frame is symmetrically fixedly connected to guide posts at the front and rear. A guide sleeve is correspondingly provided on the front side of the vertical plate, and the guide posts are slidably inserted into the guide sleeves.

[0070] The second cylinder is fixed to the rear side of the upright plate via the second connecting plate, which can precisely control the forward and backward stroke of the partition plate; the first guide column and the second guide column are symmetrically arranged to ensure that the partition plate and the support frame move synchronously in opposite directions; the outer side of the second telescopic spring is wrapped with a dustproof sleeve to prevent impurities from entering during the spring's extension and retraction; the guide column and the guide sleeve adopt a front and rear double-point sliding fit to ensure the stability of the vertical movement trajectory of the support frame.

[0071] Specifically, when the second cylinder extends, it pushes the partition plate forward to abut the bottom of the workpiece. Simultaneously, the support frame, under the action of the second telescopic spring, moves downward to detach from the workpiece. The guide post slides vertically along the guide sleeve, limiting lateral displacement. After the workpiece is separated, the second cylinder retracts, causing the partition plate to reset. The support frame, under the action of the spring, rises to support the next layer of workpiece. The clearance between the guide post and the guide sleeve allows for slight positional compensation. Through the combined control of rigid guidance and elastic reset, seamless switching between workpiece layer separation and support states is achieved, eliminating the jamming phenomenon caused by accumulated errors in traditional mechanical structures.

[0072] As a preferred embodiment, the solution of this application is specifically implemented as follows:

[0073] The feeding assembly includes a vertical plate, a second connecting plate, a partition plate, and a support frame. The second connecting plate is fixedly connected to the rear of the vertical plate, and a second cylinder is mounted on the top of the second connecting plate. A first guide post and a second guide post symmetrically and movably pass through the front of the vertical plate. The partition plate is fixedly connected to the front end of the first guide post, and the support frame is fixedly connected to the front end of the second guide post. A second telescopic spring is fitted on the outer side of both the first and second guide posts, and both ends of the second telescopic spring are connected to the vertical plate and the partition plate / support frame via dustproof sleeves. Guide posts are symmetrically fixedly connected to the bottom of the support frame, and guide sleeves are correspondingly provided on the front of the vertical plate, with the guide posts slidably inserted into the guide sleeves.

[0074] Furthermore, the upright plate can be made of aluminum alloy, with a thickness of 10mm, a height of 300mm, and a width of 200mm. The second connecting plate can be made of stainless steel, with a length of 150mm, a width of 100mm, and a thickness of 8mm. The partition plate can be made of polytetrafluoroethylene, with a length of 180mm, a width of 120mm, and a thickness of 5mm. The support frame can be made of carbon steel, with a length of 200mm, a width of 150mm, and a height of 50mm.

[0075] The first and second guide posts can be made of 45# steel, with a diameter of 15mm and a length of 250mm. The second telescopic spring can be made of 304 stainless steel, with a wire diameter of 2mm, an outer diameter of 25mm, and a free length of 150mm. The dustproof sleeve can be made of nylon, with an inner diameter of 26mm, an outer diameter of 30mm, and a length of 100mm.

[0076] Specifically, the guide post can be made of 45# steel, with a diameter of 12mm and a length of 80mm. The guide sleeve can be made of copper alloy, with an inner diameter of 12.5mm, an outer diameter of 20mm, and a length of 50mm. The second cylinder can be an SMC brand CQ2 series cylinder, with a cylinder diameter of 32mm and a stroke of 100mm.

[0077] Therefore, the above structural design enables the layer-by-layer separation and transfer of batch workpieces, thereby improving processing efficiency.

[0078] Through the above technical solution, this application achieves automated layer-by-layer separation and transfer of batch workpieces. The coordinated movement of the partition plate and support frame, combined with the buffering effect of the second telescopic spring, ensures smooth separation of the workpieces. The guide posts and guide sleeves improve the stability and accuracy of the support frame's movement. The use of dustproof sleeves effectively prevents dust from entering the telescopic spring, extending the equipment's service life. The overall structure is simple and compact, easy to operate, and suitable for batch processing of flame-retardant rubber seals of various specifications.

[0079] This application further proposes a cutting assembly including a gantry-type guide frame, linear guide rails, a servo electric cylinder, and a trimming tool; the guide frame is fixed to the front top of the housing, and linear guide rails are symmetrically installed inside it; a guide rod is fixedly connected to the slider of the linear guide rail, and a trimming tool is detachably fixedly connected to the front end of the guide rod; a servo electric cylinder is fixedly installed at the rear end of the guide frame, and the push rod end of the servo electric cylinder is fixedly connected to the rear end of the guide rod through a connector.

[0080] The gantry-type guide frame employs a double-column beam structure, forming a closed frame to support the linear guide rail. The slider and guide rod of the linear guide rail are rigidly connected by bolts, and the guide rail surface is hardened to reduce the coefficient of friction. The push rod stroke of the servo electric cylinder is proportional to the guide rod movement distance in a 1:1 ratio, and the end of the push rod is hinged to the guide rod via a universal joint connector. The trimming tool is fixed to the front end of the guide rod via a quick-release chuck, and the chuck has a locating pin hole inside that matches the tool shank.

[0081] Specifically, when the servo electric cylinder starts, the push rod moves linearly along the axial direction, driving the guide rod to move synchronously on the linear guide rail via the connecting parts. During the movement of the guide rod, the ball bearing circulation system of the linear guide rail maintains constant sliding resistance, eliminating movement backlash. The trimming tool remains perpendicular to the workpiece edge during movement, with the tool edge contacting the outer edge of the rubber seal with constant pressure. After processing, the servo electric cylinder reverses its movement to reset the guide rod, allowing for quick tool removal and replacement. The beam height of the gantry-type guide frame is set to 1.2 times the workpiece diameter, ensuring that the tool movement path completely covers the workpiece trimming area. The parallelism error of the linear guide rail is controlled within 0.02mm / m, and the coaxiality error between the guide rod movement trajectory and the workpiece axis is less than 0.05mm.

[0082] As a preferred embodiment, the solution of this application is specifically implemented as follows:

[0083] The cutting assembly includes a gantry-type guide frame, linear guides, a servo cylinder, and a trimming cutter. The gantry-type guide frame is fixed to the front top of the housing, and linear guides are symmetrically installed on its interior. Guide rods are fixedly connected to the sliders of the linear guides, and trimming cutters are detachably fixed to the front ends of the guide rods. A servo cylinder is fixedly installed at the rear end of the gantry-type guide frame, and the push rod end of the servo cylinder is fixedly connected to the rear end of the guide rod via a connector.

[0084] Specifically, the gantry-type guide frame is made of aluminum alloy profiles, featuring high strength and lightweight characteristics. The linear guides are ball screw type linear guides, offering high precision and low friction. The servo cylinders are driven by permanent magnet synchronous servo motors, providing high precision and rapid response. The trimming tools are made of carbide, offering high hardness and wear resistance. The guide rods are made of 45# steel, heat-treated to improve strength and toughness. High-strength bolts are used for connections to ensure stable and reliable transmission.

[0085] Through the above technical solutions, this application achieves high-precision positioning and stable movement of the cutting assembly. The gantry-type guide frame provides rigid support, the linear guide rail ensures the linear motion accuracy of the trimming tool, and the servo electric cylinder achieves precise position control and rapid response. The detachable trimming tool facilitates replacement and maintenance. The overall structure is compact, the movement is smooth, and it effectively improves the trimming quality and efficiency of flame-retardant rubber seals.

[0086] This application further proposes that the bottom of the box has a material discharge port, and a waste collection box is fixedly connected below the material discharge port; a transparent acrylic protective baffle is provided on the top of the box corresponding to the position of the cutting component, and one side of the protective baffle is hinged to the box; a metal protective cover is fitted on the outside of the motor, and a protective cover is provided on the synchronous belt drive part.

[0087] The material discharge port features a rectangular opening structure, with its long side arranged parallel to the movement trajectory of the cutting components. The waste collection bin is bolted to the bottom frame of the bin body, which is welded with an inclined guide plate forming a 15-degree angle with the horizontal plane. The transparent acrylic protective baffle is 8 mm thick with a light transmittance greater than 92%, and its bottom edge has a magnetic strip that can be magnetically attached to the metal strip on the top of the bin body for sealing. The metal protective cover is made of 1.2 mm thick galvanized steel sheet, stamped and formed, with an array of 3 mm diameter heat dissipation holes arranged in a honeycomb pattern. The synchronous belt cover consists of two semi-circular shells connected by hinges, with a rubber sound-absorbing layer adhered inside the shells.

[0088] Specifically, during the cutting operation, the rubber debris generated by the trimming blade slides under gravity through the inclined guide plate into the discharge port, and finally falls into the waste collection box for centralized processing. A transparent acrylic protective baffle remains closed during the cutting process, allowing operators to observe the processing status through the transparent material. Magnetic strips ensure the protective baffle is airtight when closed. A metal protective cover completely encloses the motor housing, and an array of heat dissipation holes ensures efficient heat dissipation while preventing foreign objects from entering. The two shells of the timing belt cover can be rotated open around a hinge, facilitating timing belt tension adjustment and maintenance. A rubber sound-absorbing layer effectively reduces transmission noise to below 75 decibels. This technical solution, through physical isolation and directional collection, achieves automated waste disposal and effectively improves equipment operational safety.

[0089] As a preferred embodiment, the solution of this application is specifically implemented as follows:

[0090] A material discharge port is located at the bottom of the box, and a waste collection box is fixedly connected below the discharge port. A transparent acrylic protective baffle is installed at the top of the box corresponding to the position of the cutting components, and one side of the protective baffle is hinged to the box. A metal protective cover is installed on the outside of the motor, and a protective cover is installed on the synchronous belt drive part.

[0091] The material discharge port can be rectangular, measuring 200mm × 150mm. The waste collection bin is made of stainless steel and has a capacity of 20L. The transparent acrylic protective baffle is 5mm thick and connected to the bin body via hinges. The metal protective cover is made of 1mm thick cold-rolled steel sheet with a powder-coated surface. The timing belt cover is injection molded from ABS engineering plastic and is 3mm thick.

[0092] Through the above technical solution, this application achieves automatic waste collection, avoiding environmental pollution caused by waste scattering. Simultaneously, the transparent protective baffle effectively blocks flying debris generated during processing, protecting operator safety. Protective covers for the motor and transmission components prevent accidental contact, improving equipment safety and reliability. Furthermore, these protective measures reduce equipment operating noise and improve the working environment.

[0093] This application further proposes that a PLC controller is provided on the front side of the housing. The PLC controller is electrically connected to the motor, the rotary pressing cylinder, the first cylinder, the second cylinder, the servo electric cylinder, the proximity switch, and the pressure sensor. The pressure sensor is embedded in the elastic column and is used to monitor the clamping force and feed it back to the PLC controller.

[0094] The PLC controller forms a closed-loop control circuit with the motor, cylinders, servo cylinders, proximity switches, and pressure sensors via cables. The pressure sensors employ a miniature piezoresistive structure, embedded in the inner wall of an elastic column, to detect pressure changes at the contact surface between the elastic gripper and the rubber seal. The PLC controller has a built-in PID algorithm module that outputs a control signal to the solenoid valve of the gas spring based on the deviation between a preset pressure threshold and the sensor feedback value, adjusting the extension / retraction amount. The proximity switches use inductive sensors, installed between the second connecting frame and the fixed frame, to detect the displacement of the limit plate and trigger the PLC to control the second cylinder.

[0095] Specifically, when the elastic gripper contacts the rubber seal, the pressure sensor collects the clamping force data in real time and transmits it to the PLC controller. The PLC controller compares the measured pressure value with a preset threshold. If it exceeds the allowable range, it sends an adjustment command to the gas spring, adjusting the clamping degree of the elastic gripper by changing the compressed air flow. Simultaneously, a proximity switch monitors the movement position of the limit plate. When the displacement reaches a set value, the PLC controller triggers a second cylinder to push the separator plate to separate the workpiece. The servo electric cylinder receives pulse signals from the PLC controller and precisely controls the feed speed and stroke of the trimming tool. The timing of each actuator is coordinated by the PLC program to ensure the continuity of the smoothing, clamping, unloading, and cutting processes. The combination of the pressure feedback mechanism and programmed control ensures that the clamping force is always maintained within the material's elastic deformation range, avoiding overload damage or loosening of the clamp.

[0096] As a preferred embodiment, the solution of this application is implemented as follows: A PLC controller is installed on the front surface of the housing. The PLC controller is electrically connected to the solenoid valve of the rotary pressing cylinder, the driver of the servo cylinder, and the frequency converter of the motor via shielded cables. A cylindrical pressure sensor is embedded in the internal cavity of the elastic column. This sensor is connected to the analog input port of the PLC controller via a flexible wire. When the arc-shaped elastic jaw contacts the rubber seal, the pressure sensor collects the pressure data of the clamping area in real time and transmits a 4-20mA current signal to the PLC controller. The PLC controller has a built-in PID algorithm module. When the detected pressure value exceeds the preset threshold range, it automatically outputs a control signal to the electromagnetic regulating valve of the air spring, thereby dynamically adjusting the opening and closing degree of the jaw by changing the compressed air flow.

[0097] Through the above technical solution, this application achieves closed-loop control of the clamping force of the rubber seal, effectively preventing product deformation caused by insufficient clamping force leading to processing displacement or clamping overload. The embedded installation method of the pressure sensor ensures the authenticity and real-time performance of the detection signal, and the integrated control strategy of the PLC controller enables the clamping system to adapt to the processing requirements of workpieces of different specifications, significantly improving the stability of the trimming process and the yield rate of finished products.

[0098] This application further proposes that the inner wall of the arc-shaped elastic gripper is provided with a rubber buffer pad, and the surface of the rubber buffer pad is provided with anti-slip grooves; the surface of the polyurethane roller is provided with diamond-shaped anti-slip texture.

[0099] The rubber buffer pad is fixed to the inner wall surface of the arc-shaped elastic gripper using a vulcanization process. Its thickness ranges from 2-3 mm, and the material hardness is Shore A50-A60. Anti-slip grooves are arranged in parallel at 1.5 mm intervals, with a groove depth of 0.5 mm and a groove width of 0.8 mm. The polyurethane roller surface is molded to form a diamond-shaped anti-slip pattern, with a diagonal length of 3 mm and a pattern depth of 0.3 mm. The elastic modulus of the rubber buffer pad dynamically matches the thrust of the gas spring. When the gripper closes, the buffer pad deforms under pressure to absorb impact energy, and the anti-slip grooves increase the friction coefficient of the contact surface. The diamond-shaped anti-slip pattern generates multi-directional resistance during the roller's downward pressure, preventing the rubber seal surface from sliding.

[0100] Specifically, during the clamping phase, as the arc-shaped elastic jaws close, the rubber buffer pad first contacts the outer edge of the workpiece. Its elastic deformation counteracts the instantaneous impact force of the gas spring, preventing indentations caused by rigid contact. The anti-slip groove increases surface roughness, forming a micro-interlocking structure on the clamping surface to prevent workpiece rotation and displacement. During the smoothing phase, when the polyurethane roller presses down, the edges of the diamond-shaped anti-slip texture cut into the surface of the rubber seal, generating a circumferential constraint force to prevent the workpiece from rotating with the roller. At the same time, the gaps between the textures allow the rubber material to rebound locally, avoiding excessive compression that leads to uneven thickness. The synergistic effect of the rubber buffer pad and the anti-slip texture allows the workpiece displacement to be controlled within ±0.1 mm when the clamping force is 20-30 Newtons, increasing the trimming qualification rate to over 98%.

[0101] As a preferred embodiment, the solution of this application is specifically implemented as follows: A nitrile rubber buffer pad with a Shore hardness of 60HA is bonded to the inner wall of the arc-shaped elastic gripper. The surface of the buffer pad is processed with a V-shaped anti-slip groove with a depth of 1.2mm through a molding process. The anti-slip groove is evenly distributed along the circumference at a 15° inclination angle. The working surface of the polyurethane roller is formed with equilateral rhomboid protrusions with a side length of 2mm using CNC engraving technology. A groove with a depth of 0.5mm is formed between adjacent rhomboid protrusions. The rhomboid patterns are arranged alternately at 30° along the axial and radial directions of the roller.

[0102] Through the above technical solution, this application absorbs mechanical impact through the elastic deformation of the rubber buffer pad during the clamping stage, and the V-shaped anti-slip groove increases the friction coefficient of the contact surface to prevent the workpiece from slipping when rotating; during the smoothing stage, the diamond-shaped anti-slip pattern forms multi-point contact with the workpiece surface, which not only ensures effective friction but also avoids the formation of indentations. The dual anti-slip structure works together to ensure the stability of workpiece positioning and surface integrity during the processing.

[0103] This application further proposes a method for using a trimming device for processing flame-retardant rubber seals, including the following steps: S1, Material preparation: Multiple flame-retardant rubber seals are fitted onto the outside of the second fixed post, and the second fixed post is pushed into the fixed frame along the through groove until the limiting plate is engaged in the limiting groove, completing the installation of the material feeding assembly; at this time, the bottommost rubber seal falls onto the support frame; S2, Layer-by-layer material feeding: The PLC controller controls the extension of the second cylinder, pushing the partition plate forward to abut the bottom of the bottommost rubber seal, while the support frame moves downward under the action of the second telescopic spring, disengaging from the rubber seal; subsequently, the PLC controller controls the extension of the rotary pressing cylinder, driving the roller to press down to the top surface of the rubber seal, and the motor drives the cylinder to rotate, smoothing the rubber by the rolling of the roller. Top surface of the seal; S3, Positioning and clamping: After smoothing, the rotating pressing cylinder is reset, and the roller disengages from the rubber seal; the PLC controller controls the first cylinder to extend, pushing the elastic column downward through the connecting column until the arc-shaped elastic jaw clamps the rubber seal, and the pressure sensor provides real-time feedback on the clamping force and adjusts the extension and contraction of the gas spring; S4, Trimming: the PLC controller controls the servo cylinder to start, pushing the guide rod to move along the linear guide rail, and the trimming tool trims the edge of the rubber seal; the debris generated during trimming falls into the waste collection box through the discharge port; S5, Cyclic operation: after a single trimming is completed, the first cylinder resets and releases the rubber seal, the second cylinder retracts to reset the support frame to support the next layer of rubber seals, and S2-S4 are repeated to complete batch processing.

[0104] In the material preparation step, the second fixed column achieves rapid positioning through the sliding engagement of the annular positioning protrusion and the through groove, and the helical compression spring ensures the stability of the stacked workpieces by adjusting the preload of the nut. In the layer-by-layer feeding step, the linkage between the partition plate and the support frame is precisely separated through the sliding structure of the second guide column and the guide sleeve, the roller pressing angle is fixed by the locking nut, and the diamond-shaped anti-slip texture enhances the smoothing effect. In the positioning and clamping step, the extension and retraction of the gas spring is dynamically adjusted according to the feedback of the pressure sensor to avoid excessive clamping force that could cause workpiece deformation. In the trimming step, the stroke accuracy of the servo electric cylinder is controlled within ±0.1mm, and the slider of the linear guide rail is rigidly connected to the guide rod to ensure the linear motion trajectory of the trimming tool. In the cyclic operation step, the PLC controller detects the reset status of the support frame through the limit sensor and triggers the next processing cycle.

[0105] Specifically, during the material preparation stage, the vertical stacking of batch workpieces is achieved through the insertion structure of the fixed frame and the second fixed column. The preload of the spiral compression spring counteracts the weight of the workpieces, preventing tilting. During layer-by-layer feeding, the second cylinder pushes the partition plate into the bottom of the bottom workpiece, and the support frame disengages under the action of the spring, so that the workpiece is supported only by the partition plate. Subsequently, the rotating downward cylinder drives the polyurethane roller to contact the top surface of the workpiece with constant pressure. The rotation of the cylinder column drives the workpiece to rotate synchronously, and the roller eliminates surface unevenness through rolling friction. During the positioning and clamping stage, the elastic column moves down along the T-shaped slide, and the gas spring adjusts the closing degree of the arc-shaped elastic jaws according to the electrical signal of the pressure sensor. The anti-slip groove of the rubber buffer pad increases the clamping friction. During the trimming process, the servo electric cylinder pushes the trimming tool to cut along the outer edge of the workpiece at a speed of 20-50mm / s, and the waste material slides into the collection box through the inclined drop port. During the cyclic operation, after the support frame is reset, the remaining workpieces are supported again by the cooperation of the guide column and the guide sleeve. The PLC controller executes each step sequentially according to the preset program to achieve continuous automated processing.

[0106] As a preferred embodiment, the solution of this application is implemented as follows: The stacked flame-retardant rubber seals are placed on the second fixed post of the feeding assembly, and axial positioning is achieved through the cooperation of the through groove and the annular positioning protrusion. When the helical compression spring is compressed and contracted, the limiting plate drives the second connecting frame to trigger the limiting sensor, at which point the bottom seal is lifted by the support frame. The PLC controller starts the second cylinder to push the partition plate forward and lift the bottom seal, and the support frame detaches from the workpiece under the action of the second telescopic spring. The rotating pressing cylinder drives the polyurethane roller to press down, and the motor drives the cylinder to rotate the elastic column through the synchronous belt drive, and the roller rolls on the surface of the seal to perform a smoothing operation. The gas spring adjusts the clamping force of the arc-shaped elastic jaws according to the feedback of the pressure sensor, and the servo electric cylinder drives the trimming tool to continuously cut the edge of the annular seal along a preset trajectory through the linear guide rail. After processing, the sliding cooperation between the guide post and the guide sleeve guides the support frame to reset and receive the next workpiece, and the waste material is collected through the discharge port.

[0107] Through the above technical solutions, this application realizes automated layering and precise positioning of flame-retardant rubber seals. By using PLC programmable control to coordinate the actions of each actuator, positioning deviations caused by manual operation are effectively eliminated. A composite positioning method of rotary smoothing and elastic clamping is adopted to ensure that the workpiece maintains a stable posture during the cutting process. The combined drive mode of synchronous belt drive and linear guide rail enables the trimming tool to continuously and uniformly cut along the circumference of the seal. The combination of waste collection system and protective baffle further ensures the cleanliness of the processing environment and operational safety.

[0108] The above embodiments merely illustrate several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

[0109] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A trimming device for processing flame-retardant rubber seals, characterized in that: The device includes a housing (1), on which a limiting component (2), a smoothing component (3), a feeding component (4), a discharging component (5), and a cutting component (6) are sequentially integrated. The limiting component (2) is used for radial positioning and clamping of the workpiece, the smoothing component (3) is used for flattening the top surface of the workpiece, the feeding component (4) is used for vertical stacking and bottom support of batch workpieces, the discharging component (5) is used for layer-by-layer separation and transfer of batch workpieces, and the cutting component (6) is used for trimming the edges of the workpiece.

2. The trimming equipment for processing flame-retardant rubber seals according to claim 1, characterized in that: The limiting component (2) includes a cylindrical column (21), an elastic column (23), and a clamp (24); the cylindrical column (21) is rotatably connected to the inside of the top side of the housing (1) through a deep groove ball bearing, and a T-shaped groove (22) is provided on the inner wall of the cylindrical column (21); the bottom of the elastic column (23) is slidably embedded in the T-shaped groove (22), and the top of the elastic column (23) is fixedly connected to a clamp (24) composed of an arc-shaped elastic claw (24a); a gas spring (23a) is integrated inside the elastic column (23), and the telescopic end of the gas spring (23a) is connected to the arc-shaped elastic claw (24a) for adjusting the clamping force; the bottom end of the cylindrical column (21) is fixedly sleeved with a driven plate (9), a motor (7) is installed on the bottom of the inner side of the housing (1), the output shaft of the motor (7) is fixedly connected to the driving plate (8), and the driving plate (8) and the driven plate (9) are connected by a synchronous belt (10).

3. The trimming equipment for processing flame-retardant rubber seals according to claim 1, characterized in that: The smoothing component (3) includes two rotary pressing cylinders (31), a first fixed column (32), and a first connecting plate (33); the two rotary pressing cylinders (31) are symmetrically fixed on the top of the housing (1), and their piston rods are connected to the top of the first fixed column (32) through a rotary joint (31a); the bottom end of the first fixed column (32) is fixedly connected to the first connecting plate (33), and the bottom of the first connecting plate (33) is rotatably connected to a fixed shaft (35), and a polyurethane roller (36a) is fixedly sleeved on the outside of the fixed shaft (35); a locking nut (37) is provided between the first connecting plate (33) and the fixed shaft (35) for fixing the angle of the roller (36a).

4. The trimming equipment for processing flame-retardant rubber seals according to claim 1, characterized in that: The feeding assembly (4) includes a fixed frame (41), a second fixed column (44), and a limiting plate (45); the fixed frame (41) has a through groove (42) on the top, and annular positioning protrusions (42a) are provided on the inner walls of both sides of the through groove (42); the second fixed column (44) has an annular positioning groove (44a) matching the annular positioning protrusion (42a) on the outer side, and the second fixed column (44) is slidably inserted into the through groove (42) through the positioning protrusion (42a) / groove (44a); a spiral compression spring (48a) is sleeved on the outer side of the second fixed column (44), and the two ends of the spiral compression spring (48a) are fixed to the top of the fixed frame (41) and the bottom of the limiting plate (45) by adjusting nuts (48b); a second connecting frame (49) is fixedly connected to the top of the limiting plate (45), and a limiting sensor (49a) is provided between the second connecting frame (49) and the fixed frame (41).

5. The trimming equipment for processing flame-retardant rubber seals according to claim 1, characterized in that: The feeding assembly (5) includes a vertical plate (51), a second connecting plate (52), a partition plate (54), and a support frame (56); the second connecting plate (52) is fixedly connected to the rear side of the vertical plate (51), and a second cylinder (59) is installed on the top of the second connecting plate (52); the first guide post (53) and the second guide post (55) are symmetrically and movably connected to the front side of the vertical plate (51), the front end of the first guide post (53) is fixedly connected to the partition plate (54), and the front end of the second guide post (55) is fixedly connected to the partition plate (54). Fixed connection support frame (56); the first guide post (53) and the second guide post (55) are both fitted with second telescopic springs (57), and the two ends of the second telescopic springs (57) are connected to the upright plate (51) and the partition plate (54) / support frame (56) through dustproof sleeves (57a); the bottom of the support frame (56) is symmetrically fixedly connected with guide posts (56a), and the front side of the upright plate (51) is provided with guide sleeves (56b), and the guide posts (56a) are slidably inserted into the guide sleeves (56b).

6. The trimming equipment for processing flame-retardant rubber seals according to claim 1, characterized in that: The cutting assembly (6) includes a gantry-type guide frame (61), a linear guide rail (62a), a servo electric cylinder (64), and a trimming tool (63). The guide frame (61) is fixed to the front top of the housing (1), and the linear guide rail (62a) is symmetrically installed inside it. A guide rod (62) is fixedly connected to the slider of the linear guide rail (62a), and the trimming tool (63) is detachably fixedly connected to the front end of the guide rod (62). The servo electric cylinder (64) is fixedly installed at the rear end of the guide frame (61), and the push rod end of the servo electric cylinder (64) is fixedly connected to the rear end of the guide rod (62) through a connector (65).

7. The trimming equipment for processing flame-retardant rubber seals according to claim 1, characterized in that: The bottom of the box (1) is provided with a material discharge port (11), and a waste collection box (12) is fixedly connected below the material discharge port (11); a transparent acrylic protective baffle (13) is provided on the top of the box (1) corresponding to the position of the cutting component (6), and one side of the protective baffle (13) is hinged to the box (1); a metal protective cover (14) is provided on the outside of the motor (7), and a protective cover (15) is provided on the transmission part of the synchronous belt (10).

8. The trimming equipment for processing flame-retardant rubber seals according to claim 1, characterized in that: The front side of the housing (1) is provided with a PLC controller (16), which is electrically connected to the motor (7), the rotary pressing cylinder (31), the first cylinder (27), the second cylinder (59), the servo electric cylinder (64), the proximity switch (49a), and the pressure sensor (23b). The pressure sensor (23b) is embedded in the elastic column (23) and is used to monitor the clamping force and feed it back to the PLC controller (16).

9. The trimming equipment for processing flame-retardant rubber seals according to claim 1, characterized in that: The inner wall of the arc-shaped elastic gripper (24a) is provided with a rubber buffer pad (24b), and the surface of the rubber buffer pad (24b) is provided with anti-slip grooves (24c); the surface of the polyurethane roller (36a) is provided with diamond-shaped anti-slip patterns (36b).

10. A method of using a trimming device for processing flame-retardant rubber seals according to any one of claims 1-9, characterized in that, Includes the following steps: S1. Loading preparation: Place multiple flame-retardant rubber seals on the outside of the second fixed post (44), push the second fixed post (44) along the through groove (42) into the fixed frame (41) until the limiting plate (45) is inserted into the limiting groove (43) to complete the installation of the loading assembly (4); at this time, the bottom rubber seal falls onto the support frame (56); S2, Layer-by-layer feeding: The PLC controller (16) controls the extension of the second cylinder (59), pushing the partition plate (54) forward to abut the bottom of the bottom rubber seal. At the same time, the support frame (56) moves downward under the action of the second telescopic spring (57) and disengages from the rubber seal. Then, the PLC controller (16) controls the extension of the rotary pressing cylinder (31), driving the roller (36a) to press down to the top surface of the rubber seal. The motor (7) drives the cylinder (21) to rotate, and the roller (36a) rolls and smooths the top surface of the rubber seal. S3, Positioning and clamping: After smoothing, rotate the pressing cylinder (31) to reset, and the roller (36a) disengages from the rubber seal; the PLC controller (16) controls the first cylinder (27) to extend, and pushes the elastic column (23) downward through the connecting column (28) until the arc-shaped elastic claw (24a) clamps the rubber seal, and the pressure sensor (23b) provides real-time feedback on the clamping force and adjusts the extension and retraction of the gas spring (23a); S4. Trimming process: The PLC controller (16) controls the servo electric cylinder (64) to start, pushing the guide rod (62) to move along the linear guide rail (62a), and the trimming tool (63) trims the edge of the rubber seal; the debris generated by trimming falls into the waste collection box (12) through the discharge port (11); S5. Cyclic operation: After a single trimming is completed, the first cylinder (27) resets and releases the rubber seal, and the second cylinder (59) contracts to reset the support frame (56) to support the next layer of rubber seal. Repeat S2-S4 to complete batch processing.

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