An automatic trimming and flash treatment device for suspension rubber main springs

Abstract

This invention discloses an automatic trimming and burr removal device for suspended rubber main springs, relating to the field of rubber trimming technology. It aims to solve the technical problem of current devices struggling to adapt to the curved surface of elliptical grooves when trimming suspended rubber main springs, resulting in poor processing effects. This includes a worktable. The invention, through the design of a main spring trimming component and a post-trimming processing component, achieves precise trimming of the elliptical groove. The deburring soft cover of the post-trimming processing component is flexibly deformable, adapting to the curved contour of the inner elliptical groove of the suspended rubber main spring; the deburring soft cover can penetrate deep into the arc-shaped corners of the elliptical groove to remove burrs. The design of the main spring trimming component and the post-trimming processing component, along with the arc-shaped fitting design of the trimming cutter head, solves the adaptation problem for trimming the curved surface of the elliptical groove. The deformable and adaptable deburring structure has higher processing adaptability, optimizing the trimming effect on suspended rubber main springs.

Description

Technical Field

[0001] This invention relates to the field of rubber trimming technology, and more specifically, to an automatic trimming and flash treatment device for a suspended rubber main spring. Background Technology

[0002] As a key elastic component connecting the engine / transmission to the chassis, the performance of the suspension rubber spring directly determines the NVH performance, transmission system protection effect and driving stability of the whole vehicle. In the compression molding process, the excess part of the rubber material overflows from the mold parting surface after filling the mold cavity under high temperature and high pressure, forming flash. This can lead to product assembly interference, stress concentration and reduced fatigue life. Therefore, flash removal is a necessary process to ensure product quality.

[0003] However, existing large suspension rubber springs often employ grooves and reinforcing slots to increase their load-bearing capacity and reduce their weight. However, existing automatic trimming and flash removal equipment for suspension rubber springs has several shortcomings in the processing of elliptical grooves. For example, the trimming device's cutter head often uses a planar or fixed rigid structure design, making it difficult to precisely fit the curved contour of the elliptical groove. This leads to problems such as missed cuts, excessive cuts, or uneven edge cutting during the trimming process, failing to meet the precision requirements of elliptical groove trimming. Furthermore, existing deburring technology lacks a flexible cleaning design; the deburring tools used are mostly rigid structures, making it difficult to flexibly adapt to the curved shape of the elliptical groove, let alone reach the complex areas of the curved corners. This results in incomplete deburring, and the residual burrs not only affect the structural accuracy of the suspension rubber spring but may also affect the product's performance and service life due to friction and detachment during subsequent use. Therefore, we propose an automatic trimming and flash removal device for suspension rubber springs. Summary of the Invention

[0004] The purpose of this invention is to overcome the shortcomings of the prior art, adapt to practical needs, and provide an automatic trimming and flash processing device for suspension rubber main springs. This solves the technical problem that the current device is difficult to adapt to the curved surface shape of the elliptical groove when trimming suspension rubber main springs with elliptical grooves, resulting in poor processing effect.

[0005] To solve the above-mentioned technical problems, the present invention provides the following technical solution: an automatic trimming and flash processing device for a suspension rubber main spring, comprising a worktable, a main spring trimming assembly, and a trimming post-processing assembly;

[0006] The main spring trimming assembly and the trimming post-processing assembly are located on both sides of the workbench, and a trimming station is provided in the middle of the workbench.

[0007] The main spring trimming assembly includes a first trimming cutter head, which includes an upper arc surface and a lower arc surface. The first trimming cutter head is used to adhere to the upper arc surface and the lower arc surface of the elliptical groove inside the suspended rubber main spring through the upper arc surface and the lower arc surface.

[0008] The trimming post-processing component includes a receiving frame, a deburring soft cover, and a deformation adapter component. The receiving frame has a fan-shaped structure. The deburring soft cover is located at the moving end of the deformation adapter component and at the front end of the receiving frame. The deformation adapter component is located inside the receiving frame and is used to deform the deburring soft cover so that it fits the inner wall of the inner elliptical groove of the suspension rubber main spring.

[0009] Preferably, the main spring trimming assembly further includes a first mounting bracket, a first mounting plate, a first telescopic drive unit, a mounting block, and a first guide rod;

[0010] The first mounting plate is installed at the end of the first mounting frame, a plurality of the first telescopic drive units are equidistantly and circularly mounted on the first mounting plate, a plurality of the mounting blocks are respectively installed at the output ends of the plurality of the first telescopic drive units, a plurality of the first guide rods are respectively installed on the plurality of mounting blocks and the first guide rods are slidably connected to the first mounting plate, and a plurality of the first trimming heads are respectively installed at the front ends of the plurality of mounting blocks.

[0011] Preferably, the main spring trimming assembly further includes several deep groove trimming structures, each deep groove trimming structure including an air groove, a second trimming cutter head, a first air pipe, and a first air pump.

[0012] Two air grooves are respectively opened at the upper and lower arc surfaces of the first trimming cutter head, two second trimming cutters are slidably connected in the two air grooves, two first air pipes are respectively connected to the two air grooves, and a plurality of first air pumps are equidistantly and annularly mounted on the first mounting plate, with the output end of each first air pump connected to the other end of the two first air pipes.

[0013] Preferably, the front end of the second trimming cutter head has a trapezoidal structure, and the second trimming cutter head is used to fit into the trapezoidal groove inside the suspension rubber main spring.

[0014] Preferably, the trimming post-processing assembly further includes a second mounting bracket, a second mounting plate, a second telescopic drive unit, and a second guide rod;

[0015] The second mounting plate is installed at the end of the second mounting frame, and a plurality of the second telescopic drive units are equidistantly and circularly mounted on the second mounting plate. A plurality of the receiving frames are respectively installed at the output ends of the plurality of the second telescopic drive units. A plurality of the second guide rods (307) are slidably connected to the second mounting plate, and every two second guide rods are connected to the two sides of a receiving frame.

[0016] Preferably, the deformable adaptation assembly includes a third telescopic drive unit, a drive rod, a slide groove, a push rod, a telescopic crank, and a sliding plate;

[0017] The third telescopic drive unit is mounted on the receiving frame, the drive rod is mounted on the output end of the third telescopic drive unit, the slide groove is formed on the receiving frame, and the drive rod is slidably connected in the slide groove, the push rod is mounted on the drive rod, the telescopic curved rod is mounted on the front end of the push rod, the telescopic curved rod is mounted on the deburring soft cover, and the two ends of the telescopic curved rod are respectively mounted on two sliding plates, the two sliding plates are respectively slidably connected to both sides of the receiving frame, and the deburring soft cover is mounted on the two sliding plates.

[0018] Preferably, the trimming post-processing assembly further includes several waste cleaning structures, the waste cleaning structures including a first suction pipe, a suction groove, a second suction pipe, a second air pump, and a ring pipe;

[0019] The first suction tube has several branches connected to the outside of the deburring soft cover. The suction groove is opened at the bottom of the receiving frame. The second suction tube is connected to the suction groove. The second air pump is mounted on the second mounting plate. The first suction tube and the second suction tube are both connected to the output end of the second air pump. The ring tube connects several first suction tubes and several second suction tubes.

[0020] Preferably, a main spring rotating assembly is installed at the trimming station, the main spring rotating assembly including a rotating plate, a rotating drive unit, an adsorption tank and a third air pump;

[0021] Several rotating plates are equidistantly and annularly connected to the worktable. The number of rotating plates is the same as the number of elliptical grooves on the inner side of the suspension rubber main spring, and the center of each rotating plate is the same as the center of the corresponding elliptical groove on the inner side of the suspension rubber main spring. Several rotating drive units are installed inside the worktable, and several rotating plates are respectively installed at the output ends of several rotating drive units. Several adsorption grooves are respectively opened on several rotating plates, and the output ends of several third air pumps are respectively connected to several adsorption grooves.

[0022] Preferably, a drive structure is also installed on both sides of the worktable, the drive structure including a linear motor, a slider and a slide rod;

[0023] Two linear motors are mounted on the worktable. The first mounting bracket is mounted on the output end of one of the linear motors and on a corresponding slider. The second mounting bracket is mounted on the output end of the other linear motor and on another corresponding slider. Two slide bars are respectively mounted on both sides of the worktable.

[0024] Preferably, the surface of the deburring soft cover is provided with a plurality of scrapers at equal intervals, and the surface of the scrapers is provided with wavy grooves.

[0025] Compared with the prior art, the beneficial effects of the present invention are:

[0026] 1. This invention utilizes the design of a main spring trimming assembly and a post-trimming processing assembly. The main spring trimming assembly, relying on a multi-group collaborative, arc-surface fitting, and precise guiding design, achieves efficient and precise trimming of the elliptical groove, avoiding the problems of uneven force, residual edge burrs, or excessive cutting caused by traditional single-head trimming. This ensures that the inner wall of the elliptical groove is smooth and dimensionally accurate after trimming. The post-trimming processing assembly, through deformation adaptation and flexible deburring design, completes the fine processing after trimming. The deburring soft cover deforms flexibly, precisely fitting the curved contour of the elliptical groove inside the suspended rubber main spring, allowing the deburring soft cover to fully fit the inner wall after trimming. The flexible material of the deburring soft cover completes burr removal in the fitted state, reaching deep into the arc corners of the elliptical groove to thoroughly remove residual burrs from trimming, improving the surface finish of the finished product. This invention solves the adaptation problem of trimming elliptical groove surfaces by designing a main spring trimming assembly and a post-trimming processing assembly. The arc-shaped fitting design of the trimming cutter head solves the adaptation problem of trimming elliptical groove surfaces. The deformation-adaptive deburring structure has higher processing adaptability and optimizes the trimming effect on the suspended rubber main spring.

[0027] 2. This invention utilizes a deep-groove trimming structure, specifically designed to trim the deep groove area of ​​an elliptical groove. The pneumatic drive provides rapid response and controllable thrust. The extension of the second trimming cutter head can be flexibly adjusted according to the groove depth, preventing over-cutting or incomplete trimming. Furthermore, the first and second trimming cutters move synchronously during the trimming process, ensuring smooth transition between the conventional curved surface and the deep groove area, resulting in precise and uniform overall dimensions. This invention, through its deep-groove trimming structure, overcomes the limitations of traditional trimming methods by employing both conventional and deep-groove trimming. The pneumatically driven second trimming cutter head adapts to different groove specifications, enhancing the equipment's versatility.

[0028] 3. This invention utilizes a second trimming cutter head design. The deep groove trimming structure is specifically optimized for trapezoidal deep grooves. The trapezoidal structure at the front end of the second trimming cutter head perfectly matches the contour of the trapezoidal groove inside the main spring, allowing it to closely conform to the sidewalls and bottom surface of the trapezoidal groove. This significantly increases the trimming contact area, ensuring uniform force during trimming and preventing burr residue or over-cutting at the corners of the trapezoidal groove. The extension amount can be flexibly adjusted according to the depth of the trapezoidal groove, achieving precise trimming of the deep trapezoidal groove area. Furthermore, the first and second trimming cutter heads operate synchronously, ensuring smooth transition between conventional curved surfaces and trapezoidal deep groove trimming, resulting in precise and uniform overall dimensions. This invention, through the design of the second trimming cutter head and its exclusive matching with the trapezoidal groove contour, combined with the flexible adjustment characteristics of pneumatic drive, achieves precise trimming of trapezoidal grooves of different depths.

[0029] 4. This invention utilizes a deformable adaptation component design. This component employs a precise transmission mechanism involving multi-stage drive, linkage, and sliding guidance to achieve flexible and controllable deformation of the deburring soft cover. The telescopic crank converts linear driving force into deformation force to adapt to the curved surface. The deburring soft cover adaptively deforms along the curved surface contour, precisely controlling the deformation amplitude and shape to ensure a tight fit to the conventional arc surface of the inner elliptical groove of the suspended rubber main spring, achieving full coverage of complex curved surfaces. The deformable adaptation component design of this invention enables smooth deformation, ensuring consistent adaptation to the elliptical groove surface. Furthermore, the telescopic crank provides support for the deburring soft cover, ensuring a smooth surface, precise dimensions, and burr-free edges and corners after trimming.

[0030] 5. This invention utilizes a waste cleaning structure design. This structure provides stable suction via a second air pump, and distributes the suction to the first and second suction pipes through a ring pipe. The first suction pipe can remove rubber waste generated during deburring in real time, preventing waste from adhering to the soft cover or main spring surface and affecting the cleaning effect. The suction groove at the bottom of the housing frame collects fallen waste, which is then sucked in through the second suction pipe. This achieves dual cleaning—deburring and waste removal simultaneously, with bottom collection—ensuring a clean and residue-free post-trimming processing area. This invention, through its waste cleaning structure design, utilizes multi-point real-time adsorption and bottom collection for dual cleaning, combined with the precise surface adaptation of the deformable adapter component and the trimming design of the main spring trimming component, forming a workflow of trimming, deburring, and waste cleaning.

[0031] 6. This invention utilizes a main spring rotating assembly design to ensure stable posture and precise trajectory of the main spring during rotation. Combined with trimming and post-processing components, it achieves full-circumference, dead-angle-free treatment of the elliptical groove. The adsorption groove on the rotating plate works in conjunction with a third air pump to firmly fix the main spring through negative pressure adsorption, preventing displacement of the main spring during rotation and trimming, while avoiding damage to the main spring surface, thus balancing stability and protection. Through the design of the main spring rotating assembly, this invention employs a positioning and rotation design with center alignment, precise rotation, and negative pressure adsorption, enabling trimming and deburring to cover every corner of the elliptical and trapezoidal deep grooves, further enhancing trimming accuracy. Attached Figure Description

[0032] Figure 1 This is a schematic diagram of the structure of the present invention.

[0033] Figure 2 This is a schematic diagram of the main spring trimming assembly of the present invention.

[0034] Figure 3 This is a schematic diagram of the post-trimming processing component of the present invention.

[0035] Figure 4This is a schematic diagram of the main spring trimming assembly of the present invention after removing the first mounting bracket and the first mounting plate.

[0036] Figure 5 This is a cross-sectional view of the deep groove trimming structure of the present invention.

[0037] Figure 6 This is a schematic diagram of the structure of the post-trimming processing component of the present invention, which removes the second mounting bracket and the second mounting plate.

[0038] Figure 7 This is a schematic diagram of the structure of the housing frame of the present invention.

[0039] Figure 8 This is a schematic diagram of one side of the housing frame of the present invention.

[0040] Figure 9 This is a schematic diagram of the structure of the other side of the housing frame of the present invention.

[0041] Figure 10 This is a schematic diagram of the structure at the bottom of the housing frame of the present invention.

[0042] Figure 11 This is a schematic diagram of the main spring rotating assembly of the present invention.

[0043] Figure 12 This is a schematic diagram of the bottom structure of the main spring rotating assembly of the present invention.

[0044] Figure 13 This is a schematic diagram of the structure of the rubber main spring for trimming the edge in this invention.

[0045] Figure 14 This is a cross-sectional view of the rubber main spring to be trimmed according to the present invention.

[0046] Explanation of the labels in the diagram:

[0047] 1. Worktable; 2. Main spring trimming assembly; 3. Post-trimming processing assembly; 4. Main spring rotation assembly; 5. Drive structure;

[0048] 201. First trimming cutter head; 202. First mounting bracket; 203. First mounting plate; 204. First telescopic drive unit; 205. Mounting block; 206. First guide rod; 207. Deep groove trimming structure;

[0049] 2071. Air groove; 2072. Second trimming cutter head; 2073. First air pipe; 2074. First air pump;

[0050] 301. Receiving frame; 302. Deburred soft cover; 303. Deformation adapter assembly; 304. Second mounting bracket; 305. Second mounting plate; 306. Second telescopic drive unit; 307. Second guide rod; 308. Waste removal structure;

[0051] 3031, Third telescopic drive unit; 3032, Drive rod; 3033, Slide groove; 3034, Push rod; 3035, Telescopic crank; 3036, Sliding plate;

[0052] 3081, First suction pipe; 3082, Suction tank; 3083, Second suction pipe; 3084, Second air pump; 3085, Ring pipe;

[0053] 401. Rotating plate; 402. Rotation drive unit; 403. Adsorption tank; 404. Third air pump;

[0054] 501. Linear motor; 502. Slider; 503. Sliding rod. Detailed Implementation

[0055] Examples, such as Figures 1 to 14 As shown, the present invention relates to an automatic trimming and flash treatment device for a suspended rubber main spring, comprising a worktable 1, a main spring trimming assembly 2, and a trimming post-processing assembly 3; the main spring trimming assembly 2 and the trimming post-processing assembly 3 are respectively located on both sides of the worktable 1, and a trimming station is provided in the middle of the worktable 1; the main spring trimming assembly 2 includes a first trimming cutter head 201, which includes an upper arc surface and a lower arc surface, and the first trimming cutter head 201 is used to fit against the upper arc surface of the inner elliptical groove of the suspended rubber main spring through the upper arc surface and the lower arc surface. On the lower arc surface; the trimming post-processing component 3 includes a receiving frame 301, a deburring soft cover 302, and a deformation adapter component 303. The receiving frame 301 has a fan-shaped structure. The deburring soft cover 302 is located at the moving end of the deformation adapter component 303 and is located at the front end of the receiving frame 301. The deformation adapter component 303 is located inside the receiving frame 301 and is used to deform the deburring soft cover 302 so that the deburring soft cover 302 fits into the inner wall of the inner elliptical groove of the suspension rubber main spring.

[0056] The main spring trimming assembly 2 also includes a first mounting bracket 202, a first mounting plate 203, a first telescopic drive unit 204, a mounting block 205, and a first guide rod 206. The first mounting plate 203 is mounted at the end of the first mounting bracket 202. The four first telescopic drive units 204 are equidistantly and circularly mounted on the first mounting plate 203. The four mounting blocks 205 are respectively mounted on the output ends of the four first telescopic drive units 204. The four first guide rods 206 are respectively mounted on the four mounting blocks 205, and the first guide rods 206 are slidably connected to the first mounting plate 203. The four first trimming cutters 201 are respectively mounted on the front ends of the four mounting blocks 205.

[0057] The trimming post-processing assembly 3 also includes a second mounting bracket 304, a second mounting plate 305, a second telescopic drive unit 306, and a second guide rod 307. The second mounting plate 305 is mounted at the end of the second mounting bracket 304. Four second telescopic drive units 306 are equidistantly and circularly mounted on the second mounting plate 305. Four receiving frames 301 are respectively mounted on the output ends of the four second telescopic drive units 306. Eight second guide rods 307 are slidably connected to the second mounting plate 305, and every two second guide rods 307 are connected to both sides of a receiving frame 301.

[0058] The worktable 1 is also equipped with a drive structure 5 on both sides. The drive structure 5 includes a linear motor 501, a slider 502 and a slide bar 503. Two linear motors 501 are installed on the worktable 1. A first mounting bracket 202 is installed on the output end of one of the linear motors 501 and a corresponding slider 502. A second mounting bracket 304 is installed on the output end of the other linear motor 501 and another corresponding slider 502. The two sliders 502 are slidably connected to the two slide bars 503 respectively. The two slide bars 503 are installed on both sides of the worktable 1 respectively.

[0059] The surface of the deburring soft cover 302 is provided with several scrapers at equal intervals, and the surface of the scrapers is provided with wavy grooves.

[0060] This invention, through the design of the main spring trimming assembly 2 and the trimming post-processing assembly 3, constructs an automated suspension rubber main spring trimming system that includes positioning, fitting trimming, and deburring adaptation. It solves the pain points of poor equipment fit, low trimming accuracy, insufficient deburring adaptability, and process disconnect. It can improve the efficiency, accuracy, and finished product quality stability of trimming the inner elliptical groove of the suspension rubber main spring, and adapt to the industrial production needs of core components of automotive suspension systems.

[0061] The present invention uses the workbench 1 as the supporting base and the trimming station as the core working area. The two drive structures 5 provide precise power for station switching: the linear motor 501 drives the slider 502 to slide smoothly along the slide bar 503, and simultaneously drives the first mounting frame 202 and the second mounting frame 304 to enter and exit the trimming station. The cooperation between the slide bar 503 and the slider 502 ensures the stability of the moving posture of the mounting frame.

[0062] The core main spring trimming assembly 2 relies on a multi-group collaborative, arc-surface fitting, and precise guiding design to achieve efficient and precise trimming of the elliptical groove: four sets of first telescopic drive units 204 arranged in a ring at equal intervals on the first mounting plate 203 drive the first trimming cutter head 201 to extend and retract synchronously through the mounting block 205. The four sets of first guide rods 206 slide to ensure that there is no deviation during the extension and retraction of the cutter head; the upper and lower arc surfaces of the first trimming cutter head 201 match the upper and lower arc surfaces of the elliptical groove inside the suspended rubber main spring. During operation, the four cutter heads synchronously fit the inner wall of the elliptical groove under the action of the telescopic drive units. With the linear feed of the drive structure 5, precise trimming of the entire circumference of the inner wall of the elliptical groove is achieved, avoiding the problems of uneven force, residual edge burrs, or excessive cutting caused by traditional single-cutter trimming, and ensuring that the inner wall of the elliptical groove is smooth and dimensionally accurate after trimming.

[0063] The post-trimming processing component 3 completes the fine processing after trimming through deformation adaptation and flexible deburring design: four sets of second telescopic drive units 306 arranged in a ring at equal intervals on the second mounting plate 305 drive the fan-shaped receiving frame 301 to extend and retract synchronously, and the guide rods on both sides ensure that the receiving frame 301 enters and exits smoothly; the deformation adaptation component 303 inside the receiving frame 301 drives the deburring soft cover 302 to deform flexibly, which can accurately adapt to the curved contour of the inner elliptical groove of the suspended rubber main spring, so that the deburring soft cover 302 fully fits the inner wall after trimming; the flexible material deburring soft cover 302 completes the deburring in the fitted state, which not only avoids the damage to the rubber surface caused by rigid cleaning, but also can penetrate into the arc corner of the elliptical groove to thoroughly remove the residual burrs after trimming and improve the surface smoothness of the finished product; the structural design of the fan-shaped receiving frame 301 provides sufficient room for movement for the deformation adaptation component 303 and the deburring soft cover 302, while avoiding interference with the main spring body during operation.

[0064] The present invention solves the adaptation problem of elliptical groove curved surface trimming by designing the main spring trimming component 2 and the trimming post-processing component 3. The arc surface fitting design of the trimming cutter head solves the adaptation problem of elliptical groove curved surface trimming. The deformation-adaptive deburring structure has higher processing adaptability and optimizes the trimming effect on the suspended rubber main spring.

[0065] Specifically, such as Figures 2 to 5 As shown, the main spring trimming assembly 2 of the present invention further includes four deep groove trimming structures 207. The deep groove trimming structure 207 includes an air groove 2071, a second trimming cutter head 2072, a first air pipe 2073, and a first air pump 2074. The two air grooves 2071 are respectively opened at the upper arc surface and the lower arc surface of the first trimming cutter head 201. The two second trimming cutters head 2072 are slidably connected in the two air grooves 2071. The two first air pipes 2073 are respectively connected to the two air grooves 2071. The four first air pumps 2074 are equidistantly and annularly mounted on the first mounting plate 203, and the output end of each first air pump 2074 is connected to the other end of the two first air pipes 2073.

[0066] This invention, through the design of the deep groove trimming structure 207, adds a deep groove trimming structure 207 to the main spring trimming assembly 2, integrating the original arc surface trimming, drive positioning and trimming post-processing system, and constructing a fully automated suspension rubber main spring trimming system that includes conventional arc surface trimming, targeted deep groove trimming and flexible deburring. It can take into account both the conventional arc surface of the elliptical groove and the deep groove area, greatly improving the comprehensiveness, accuracy and stability of the trimming and the quality of the finished product, perfectly meeting the industrial production needs of the core components of the automotive suspension system.

[0067] The deep groove trimming structure 207 provides dual trimming protection: the upper and lower arc surfaces of the first trimming cutter head 201 precisely fit the conventional arc surface of the elliptical groove inside the suspension rubber main spring; four sets of first telescopic drive units 204 drive the cutter head to extend and retract synchronously via mounting blocks 205; the first guide rod 206 ensures no deviation during extension and retraction, achieving full circumferential trimming in the conventional area; simultaneously, the second trimming cutter head 2072 is slidably assembled within the air grooves 2071 opened on the upper and lower arc surfaces of the first trimming cutter head 201; and four sets of first air pumps 2074... The first air pipe 2073 precisely supplies air to the air groove 2071, driving the second trimming cutter head 2072 to extend from the air groove 2071. It is specifically adapted to the deep groove area of ​​the elliptical groove to complete the trimming. The air-driven method has a rapid response and controllable thrust. The extension amount of the second trimming cutter head 2072 can be flexibly adjusted according to the depth of the deep groove to avoid over-cutting or incomplete trimming. In addition, the first and second trimming cutter heads 2072 move synchronously during the trimming process to ensure smooth connection between the conventional arc surface and the deep groove area, and the overall dimensions are accurate and uniform.

[0068] This invention breaks through the limitations of traditional trimming by designing a deep groove trimming structure 207 and using both conventional and deep groove trimming. The air-driven second trimming cutter head 2072 is adapted to different deep groove specifications, improving the versatility of the equipment.

[0069] It is worth noting that, such as Figure 5 As shown, the front end of the second trimming cutter head 2072 involved in this invention has a trapezoidal structure, and the second trimming cutter head 2072 is used to fit into the trapezoidal groove inside the suspension rubber main spring.

[0070] This invention, through the design of the second trimming cutter head 2072, employs a trapezoidal front end in the deep groove trimming structure 207 of the main spring trimming assembly 2. This precisely adapts to the trapezoidal groove on the inner side of the suspension rubber main spring. Combined with the existing arc surface trimming system, drive positioning structure, and deep synergy of the trimming post-processing assembly 3, a fully automated suspension rubber main spring trimming system is constructed, which includes conventional arc surface trimming, targeted trapezoidal deep groove trimming, and full-area flexible deburring. This system can adapt to the trapezoidal deep groove structure, has good trimming fit, and significantly improves the comprehensiveness, accuracy, and stability of finished product quality, perfectly meeting the industrial production needs of core components of automotive suspension systems.

[0071] The deep groove trimming structure 207 is specifically optimized for trapezoidal deep grooves. The second trimming cutter 2072, which is slidably mounted in the air grooves 2071 on the upper and lower arc surfaces of the first trimming cutter 201, has a trapezoidal structure at its front end that perfectly matches the contour of the trapezoidal groove on the inner side of the main spring. This allows it to closely fit the sidewalls and bottom surface of the trapezoidal groove, significantly increasing the trimming contact area and ensuring uniform force during trimming. This avoids the problem of burrs remaining or excessive cutting at the corners of the trapezoidal groove. Four sets of first air pumps 2074 precisely supply air to the air grooves 2071 through the first air pipes 2073, driving the second trimming cutter 2072 to extend from the air grooves 2071. The extension amount can be flexibly adjusted according to the depth of the trapezoidal groove to achieve precise trimming of the trapezoidal deep groove area. Furthermore, the first and second trimming cutters 2072 move synchronously, ensuring smooth connection between the trimming of the conventional arc surface and the trapezoidal deep groove, and precise and uniform overall dimensions.

[0072] The present invention achieves precise trimming of trapezoidal grooves of different depths by designing a second trimming cutter head 2072, through the exclusive matching of the cutter head shape with the contour of the trapezoidal groove, combined with the flexible adjustment characteristics of air drive.

[0073] Furthermore, such as Figures 6 to 9 As shown, the deformable adapter assembly 303 of the present invention includes a third telescopic drive unit 3031, a drive rod 3032, a slide groove 3033, a push rod 3034, a telescopic curved rod 3035, and a sliding plate 3036. The third telescopic drive unit 3031 is mounted on the receiving frame 301, the drive rod 3032 is mounted on the output end of the third telescopic drive unit 3031, the slide groove 3033 is formed on the receiving frame 301, and the drive rod 3032 is slidably connected in the slide groove 3033. The push rod 3034 is mounted on the drive rod 3032, the telescopic curved rod 3035 is mounted on the front end of the push rod 3034, the telescopic curved rod 3035 is mounted on the deburring soft cover 302, and the two ends of the telescopic curved rod 3035 are respectively mounted on the two sliding plates 3036. The two sliding plates 3036 are respectively slidably connected to both sides of the receiving frame 301, and the deburring soft cover 302 is mounted on the two sliding plates 3036.

[0074] This invention refines the structure of the deformation adapter component 303 of the trimming post-processing component 3 through the design of the deformation adapter component 303, integrates the main spring trimming component 2, the drive structure 5 and the worktable 1 in a deep collaboration, and constructs a fully automated suspension rubber main spring trimming system that includes conventional arc surface trimming, trapezoidal deep groove specialized trimming, and precise adaptation deburring. The deburring soft cover 302 further improves the accuracy and stability of the trimming post-processing, perfectly adapting to the industrial production needs of core components of automotive suspension systems.

[0075] In the post-trimming processing component 3, the deformation adaptation component 303 achieves flexible and controllable deformation of the deburring soft cover 302 through a precise transmission mechanism of multi-stage drive, linkage, and sliding guidance: the third telescopic drive unit 3031 serves as the power source, driving the drive rod 3032 to slide smoothly along the slide groove 3033 of the receiving frame 301, avoiding drive deviation; the drive rod 3032 drives the push rod 3034 to move synchronously, and the telescopic curved rod 3035 at the front end of the push rod 3034 converts the linear driving force into the deformation of the adapting curved surface. The telescopic crank 3035 is slidably connected to both sides of the housing frame 301 via sliding plates 3036 at both ends. The sliding plates 3036 provide a stable installation base for the deburring soft cover 302 and can slide synchronously with the movement of the telescopic crank 3035, causing the deburring soft cover 302 to adaptively deform along the curved surface contour. This design can precisely control the deformation amplitude and shape of the deburring soft cover 302, so that it can closely fit the conventional arc surface of the inner elliptical groove of the suspension rubber main spring, achieving full coverage of complex curved surfaces.

[0076] The present invention, through the design of the deformation adaptation component 303, can smoothly complete the deformation and achieve constant adaptation to the elliptical groove surface. Furthermore, the telescopic curved rod 3035 provides support for the deburred soft cover 302, ensuring that the main spring surface is smooth, the dimensions are accurate, and the edges and corners are burr-free after trimming.

[0077] Furthermore, such as Figures 6 to 10 As shown, the trimming post-processing assembly 3 of the present invention also includes four waste cleaning structures 308. The waste cleaning structure 308 includes a first suction pipe 3081, a suction groove 3082, a second suction pipe 3083, a second air pump 3084, and a ring pipe 3085. The ten branches of the first suction pipe 3081 are all connected to the outside of the deburring soft cover 302. The suction groove 3082 is opened at the bottom of the receiving frame 301. The second suction pipe 3083 is connected to the suction groove 3082. The second air pump 3084 is mounted on the second mounting plate 305, and the first suction pipe 3081 and the second suction pipe 3083 are both connected to the output end of the second air pump 3084. The ring pipe 3085 connects the four first suction pipes 3081 and the four second suction pipes 3083.

[0078] This invention, through the design of the waste cleaning structure 308, adds a waste cleaning structure 308 to the trimming post-processing component 3, integrates the refined deformation adapter component 303, the main spring trimming component 2 and the drive structure 5, and constructs an automated suspension rubber main spring trimming system that synchronizes and coordinates trimming, deburring and waste cleaning, further improving the cleanliness, efficiency and quality stability of the entire trimming process, and perfectly adapting to the industrial production needs of core components of automotive suspension systems.

[0079] The waste cleaning structure 308 provides stable suction through the second air pump 3084, and distributes the suction to the four first suction pipes 3081 and four second suction pipes 3083 through the ring pipe 3085. The ten branches of the first suction pipes 3081 are evenly distributed outside the deburring soft cover 302, which can suck up the rubber waste generated during the deburring process in real time, and prevent the waste from adhering to the surface of the soft cover or main spring and affecting the cleaning effect. The suction groove 3082 at the bottom of the receiving frame 301 is responsible for collecting the fallen waste, which is sucked up through the second suction pipes 3083, realizing dual cleaning of deburring and waste suction at the same time, and bottom collection, ensuring that the post-trimming processing area is clean and free of residue.

[0080] The present invention, through the design of the waste cleaning structure 308, forms a workflow of trimming, deburring, and waste cleaning by using a dual cleaning design of multi-point real-time adsorption and bottom collection, combined with the precise curved surface adaptation of the deformation adapter component 303 and the trimming design of the main spring trimming component 2.

[0081] Furthermore, such as Figures 11 to 12 As shown, the trimming station of the present invention is equipped with a main spring rotating assembly 4. The main spring rotating assembly 4 includes a rotating plate 401, a rotating drive unit 402, an adsorption groove 403, and a third air pump 404. The four rotating plates 401 are equidistantly and annularly connected to the worktable 1. The number of the four rotating plates 401 is the same as the number of the four elliptical grooves on the inner side of the suspended rubber main spring, and the center of each rotating plate 401 is the same as the center of the corresponding elliptical groove on the inner side of the suspended rubber main spring. The four rotating drive units 402 are all installed in the worktable 1, and the four rotating plates 401 are respectively installed at the output ends of the four rotating drive units 402. The four adsorption grooves 403 are respectively opened on the four rotating plates 401, and the output ends of the two third air pumps 404 are respectively connected to the four adsorption grooves 403.

[0082] This invention, through the design of the main spring rotating assembly 4, adds the main spring rotating assembly 4 to the trimming station, integrates the original functional components to form a closed-loop collaborative system, and constructs an automated suspension rubber main spring trimming system with precise positioning, rotational collaboration, full-circumference trimming, synchronous post-processing, and zero waste. This significantly improves the accuracy, uniformity, and automation level of the entire trimming process, and perfectly meets the industrial mass production needs of core components of automotive suspension systems.

[0083] The main spring rotation assembly 4 provides key assurance for precise processing around the entire circumference: four sets of equidistantly arranged rotating plates 401 correspond to the four elliptical grooves on the inner side of the suspended rubber main spring, and the center of each rotating plate 401 coincides with the center of the corresponding elliptical groove, ensuring the stability of the main spring's posture and the accuracy of its trajectory during rotation; the rotation drive unit 402 drives the rotating plates 401 to rotate the main spring synchronously, and works with the trimming and post-processing components to achieve full-circumference processing of the elliptical grooves without dead angles; the adsorption groove 403 on the rotating plate 401 works in conjunction with the third air pump 404 to firmly fix the main spring through negative pressure adsorption, preventing the main spring from shifting during rotation and trimming, while not damaging the surface of the main spring, thus balancing fixation stability and protection.

[0084] The present invention, through the design of the main spring rotating component 4, uses a positioning and rotating design with center alignment, precise rotation, and negative pressure adsorption to enable trimming and deburring to cover every corner of the elliptical groove and trapezoidal deep groove, further enhancing the trimming accuracy.

[0085] The embodiments disclosed in this invention are preferred embodiments, but are not limited thereto. Those skilled in the art can easily understand the spirit of this invention based on the above embodiments and make different extensions and variations, but as long as they do not depart from the spirit of this invention, they are all within the protection scope of this invention.

Claims

1. An automatic trimming and flash removal device for a suspended rubber main spring, characterized in that, It includes a worktable (1), a main spring trimming assembly (2), and a trimming post-processing assembly (3). The main spring trimming assembly (2) and the trimming post-processing assembly (3) are located on both sides of the workbench (1), and the workbench (1) is provided with a trimming station in the middle. The main spring trimming assembly (2) includes a first trimming cutter (201), which includes an upper arc surface and a lower arc surface. The first trimming cutter (201) is used to adhere to the upper arc surface and the lower arc surface of the inner elliptical groove of the suspended rubber main spring through the upper arc surface and the lower arc surface. The main spring trimming assembly (2) also includes a first mounting bracket (202), a first mounting plate (203), a first telescopic drive unit (204), a mounting block (205), and a first guide rod (206). The first mounting plate (203) is installed at the end of the first mounting bracket (202), a plurality of the first telescopic drive units (204) are equidistantly and circularly installed on the first mounting plate (203), a plurality of the mounting blocks (205) are respectively installed at the output ends of the plurality of the first telescopic drive units (204), a plurality of the first guide rods (206) are respectively installed on the plurality of mounting blocks (205), and the first guide rods (206) are slidably connected to the first mounting plate (203), and a plurality of the first trimming cutter heads (201) are respectively installed at the front ends of the plurality of mounting blocks (205); The main spring trimming assembly (2) also includes several deep groove trimming structures (207), the deep groove trimming structure (207) includes an air groove (2071), a second trimming cutter head (2072), a first air pipe (2073) and a first air pump (2074); Two air grooves (2071) are respectively opened on the upper arc surface and the lower arc surface of the first trimming head (201), two second trimming heads (2072) are respectively slidably connected in the two air grooves (2071), two first air pipes (2073) are respectively connected to the two air grooves (2071), and a plurality of first air pumps (2074) are equidistantly and annularly mounted on the first mounting plate (203), and the output end of each first air pump (2074) is connected to the other end of the two first air pipes (2073); The trimming post-processing component (3) includes a receiving frame (301), a deburring soft cover (302), and a deformation adapter component (303). The receiving frame (301) has a fan-shaped structure. The deburring soft cover (302) is located at the moving end of the deformation adapter component (303) and is located at the front end of the receiving frame (301). The deformation adapter component (303) is located inside the receiving frame (301). The deformation adapter component (303) is used to deform the deburring soft cover (302) so that the deburring soft cover (302) fits the inner wall of the inner elliptical groove of the suspension rubber main spring.

2. The automatic trimming and flash treatment equipment for a suspension rubber main spring according to claim 1, characterized in that, The front end of the second trimming cutter (2072) is a trapezoidal structure, and the second trimming cutter (2072) is used to fit into the trapezoidal groove on the inner side of the suspension rubber main spring.

3. The automatic trimming and flash treatment equipment for a suspension rubber main spring according to claim 2, characterized in that, The trimming post-processing assembly (3) also includes a second mounting bracket (304), a second mounting plate (305), a second telescopic drive unit (306), and a second guide rod (307). The second mounting plate (305) is mounted at the end of the second mounting bracket (304). A plurality of second telescopic drive units (306) are mounted equidistantly in a ring on the second mounting plate (305). A plurality of the receiving frames (301) are respectively mounted on the output ends of the plurality of second telescopic drive units (306). A plurality of second guide rods (307) are slidably connected to the second mounting plate (305), and every two second guide rods (307) are connected to the two sides of a receiving frame (301).

4. The automatic trimming and flash treatment equipment for a suspension rubber main spring according to claim 3, characterized in that, The deformable adapter component (303) includes a third telescopic drive unit (3031), a drive rod (3032), a slide groove (3033), a push rod (3034), a telescopic crank rod (3035), and a sliding plate (3036). The third telescopic drive unit (3031) is installed on the receiving frame (301), the drive rod (3032) is installed on the output end of the third telescopic drive unit (3031), the slide groove (3033) is opened on the receiving frame (301), and the drive rod (3032) is slidably connected in the slide groove (3033), the push rod (3034) is installed on the drive rod (3032), the telescopic curved rod (3035) is installed at the front end of the push rod (3034), the telescopic curved rod (3035) is installed on the deburring soft cover (302), and the two ends of the telescopic curved rod (3035) are respectively installed on two sliding plates (3036), the two sliding plates (3036) are respectively slidably connected on both sides of the receiving frame (301), and the deburring soft cover (302) is installed on the two sliding plates (3036).

5. The automatic trimming and flash treatment equipment for a suspension rubber main spring according to claim 4, characterized in that, The trimming post-processing component (3) also includes several waste cleaning structures (308), which include a first suction pipe (3081), a suction groove (3082), a second suction pipe (3083), a second air pump (3084), and a ring pipe (3085). The first suction pipe (3081) has several branches connected to the outside of the deburring soft cover (302). The suction groove (3082) is opened at the bottom of the receiving frame (301). The second suction pipe (3083) is connected to the suction groove (3082). The second air pump (3084) is mounted on the second mounting plate (305). The first suction pipe (3081) and the second suction pipe (3083) are both connected to the output end of the second air pump (3084). The ring pipe (3085) connects several first suction pipes (3081) and several second suction pipes (3083).

6. The automatic trimming and flash treatment equipment for a suspension rubber main spring according to claim 5, characterized in that, The trimming station is equipped with a main spring rotating assembly (4), which includes a rotating plate (401), a rotating drive unit (402), an adsorption tank (403), and a third air pump (404). A plurality of rotating plates (401) are equidistantly and annularly connected to the worktable (1). The plurality of rotating plates (401) have the same number as the plurality of elliptical grooves on the inner side of the suspension rubber main spring, and the center of each rotating plate (401) is the same as the center of the corresponding elliptical groove on the inner side of the suspension rubber main spring. A plurality of rotating drive units (402) are installed in the worktable (1), and the plurality of rotating plates (401) are respectively installed at the output end of the plurality of rotating drive units (402). A plurality of adsorption grooves (403) are respectively opened on the plurality of rotating plates (401), and the output ends of the plurality of third air pumps (404) are respectively connected to the plurality of adsorption grooves (403).

7. The automatic trimming and flash treatment equipment for a suspension rubber main spring according to claim 6, characterized in that, The workbench (1) is also equipped with a drive structure (5) on both sides, the drive structure (5) including a linear motor (501), a slider (502) and a slide bar (503); Two linear motors (501) are mounted on the workbench (1). The first mounting bracket (202) is mounted on the output end of one of the linear motors (501) and a corresponding slider (502). The second mounting bracket (304) is mounted on the output end of the other linear motor (501) and another corresponding slider (502). The two sliders (502) are slidably connected to two slide rods (503). The two slide rods (503) are mounted on both sides of the workbench (1).

8. The automatic trimming and flash treatment equipment for a suspension rubber main spring according to claim 7, characterized in that, The surface of the deburring soft cover (302) is provided with several scrapers at equal intervals, and the surface of the scrapers is provided with wavy grooves.

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