Automobile steel plate spring end rib pressing die
By designing a rib-forming mold that includes a retaining assembly, a positioning assembly, and an upper plate assembly, the problem of excessive extension at the end of the leaf spring was solved, achieving stable and precise rib-forming processing and improving the forming quality and production efficiency of automotive leaf springs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- SHANDONG PROVINCE WENDENGSHISHUANGLIBANHUANG GRP CO LTD
- Filing Date
- 2026-04-10
- Publication Date
- 2026-06-12
AI Technical Summary
Existing automotive leaf spring end reinforcement molds are prone to excessive stretching of the leaf spring ends during the mold closing process, resulting in metal accumulation and increased thickness, which affects processing quality and increases costs.
A rib-forming mold comprising a base plate, side support plates, a top plate, and hydraulic rods is designed, equipped with a suction baffle assembly, a measuring assembly, and an upper plate assembly. The suction baffle assembly provides an extension cavity, the measuring assembly accurately detects the extension length of the leaf spring end, and the upper plate assembly enables automatic pushing. Combined with a vacuum cleaner to clean up debris, this ensures the accuracy and stability of the rib-forming process.
This achieves stability and precision in the end spring compression ribs, avoids metal accumulation, improves processing quality and efficiency, and reduces subsequent processing costs.
Smart Images
Figure CN122184170A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of rib-pressing mold technology, and more specifically, to an end rib-pressing mold for automotive leaf springs. Background Technology
[0002] Automotive leaf springs are the core load-bearing components of automotive suspension systems. They are primarily composed of several alloy spring leaves of equal width but varying lengths, simultaneously providing cushioning, vibration damping, guidance, and force transmission. Connecting the axle to the chassis, they bear the supporting forces, traction forces, braking forces, and lateral forces exerted by the axle on the chassis, reducing impacts during vehicle operation and directly determining the vehicle's stability and safety. End reinforcement is a crucial process in the production of automotive leaf springs. Its purpose is to enhance the structural strength of the leaf spring ends, improve fatigue resistance, and prevent end deformation and breakage during long-term stress. The end reinforcement mold for automotive leaf springs is the core equipment for this process. Its structural design and performance directly affect the precision, forming quality, and production efficiency of the leaf spring reinforcement, and are key to ensuring the product qualification rate of automotive leaf springs.
[0003] Existing automotive leaf spring end-reinforcing molds include an upper punch and a lower die. When manufacturing end-reinforcing ribs for automotive leaf springs using these molds, the upper punch is hydraulically driven to descend, cooperating with the lower die to form the ribs on the heated leaf spring ends. As the mold closes, the leaf spring ends are continuously compressed, causing them to stretch. While some molds now include simple stop and limit structures to initially position the leaf spring and prevent excessive stretching during mold closing, the fixed stop and limit positions of these existing molds mean that when the mold groove is deep, the leaf spring ends are forced to stretch even further during mold closing. Under the constraint of the stop and limit structure, the leaf spring ends are subjected to varying degrees of compression, leading to metal accumulation and increased thickness at the leaf spring ends after rib processing. This affects the quality of the rib processing and, moreover, requires further processing, adding extra steps and increasing the cost of rib processing for automotive leaf springs.
[0004] In view of this, the present invention proposes a mold that ensures stable and precise pressing of the ends of automotive leaf springs. Summary of the Invention
[0005] Technical problem to be solved: The purpose of this invention is to provide an end-stressing mold for automotive leaf springs, which solves the technical problem mentioned in the background art above.
[0006] Technical Solution: The present invention provides a mold for pressing the end of an automotive leaf spring, including a base plate. A side support plate and an upper plate assembly are fixed to the top surface of the base plate. Two side support plates are fixed in mirror image of the vertical centerline of the base plate. A top plate is fixed across the top surface of the two side support plates. A hydraulic rod is connected through the top surface of the top plate. An upper punch is connected to the free bottom end of the hydraulic rod. A suction-blocking assembly and a lower die are fixed between the inner walls of the two side support plates. A gap is provided between the bottom surface of the suction-blocking assembly and the top surface of the lower die, and this gap forms an extension cavity for the leaf spring pressing end to extend outwards. A measuring assembly is fixed across the side walls of the two side support plates. One side of the measuring assembly is inserted into the gap between the suction-blocking assembly and the lower die. The measuring assembly is used to detect the extension length of the leaf spring end entering the extension cavity. The upper plate assembly is used to push the leaf spring between the upper punch and the lower die. The measuring assembly includes a first bracket fixed between the side walls of two side support plates. A first electric roller and a first conveying roller are rotatably connected inside the first bracket. An encoder is connected to one end of the first electric roller. The encoder is fixed to the side wall of the first bracket. A measuring plate is rolled and attached between the first electric roller and the first conveying roller. One side of the measuring plate is slidably inserted into the extension cavity. The encoder detects the extension length of the leaf spring by detecting the rotation signal of the first electric roller.
[0007] Furthermore, the measurement assembly also includes a positioning frame sleeved on the outer wall of the measurement plate. The side wall of the positioning frame is fixed with a limiting groove. The limiting groove is engaged with the side wall of the measurement plate. There are two limiting grooves fixed in mirror image about the vertical center line of the positioning frame. A positioning bolt is connected through the side wall of the limiting groove. One end of the positioning bolt is attached to and clamped to the side wall of the measurement plate.
[0008] Furthermore, the suction-blocking assembly includes a fixed frame fixed between the inner walls of the two side support plates. A scraping component is inserted into the bottom surface of the fixed frame. Two spring-loaded tabs are connected to the top surface of the scraping component. The top surface of the spring-loaded tabs is connected to the inside of the fixed frame. A push plate is inserted into the top surface of the fixed frame. A gear is rotatably connected inside the fixed frame. The gear meshes between the side wall of the scraping component and the side wall of the push plate. A pressure plate is fixed to the side wall of the upper punch. The pressure plate is located on the top of the push plate. A second positioning groove is opened on the top surface of the measuring plate for the scraping component to be inserted. The scraping component is pushed outward to the bottom of the fixed frame by the spring-loaded tabs to position the measuring plate and the leaf spring inside the extension cavity.
[0009] Furthermore, the suction blocking assembly also includes a vacuum cleaner fixed to the side wall of the fixing frame. The inside of the scraping component is a hollow structure. The inside of the vacuum cleaner and the hollow structure of the scraping component are connected through a telescopic hose. A suction port is provided at the bottom of the scraping component near the upper punch. The suction port is connected through the hollow structure of the scraping component. The suction port is set inside the extension cavity through the scraping component.
[0010] Furthermore, the scraping component includes a suction box inserted into the fixed frame. The suction box has an inclined structure on the side near the measuring plate. The suction box is pushed up by the measuring plate to be inserted into the fixed frame. One side of the suction box is connected to a gear. A suction port is provided at the bottom of the side wall of the suction box. A scraping part is fixed inside the suction port. The scraping part is pushed up by the suction box to scrape and clean the end face of the leaf spring. A first positioning groove for the insertion of the suction box is opened on the top surface of the lower die.
[0011] Furthermore, the scraping part includes a fixing plate fixed to the top surface inside the suction port of the suction box. Two adjusting bolts are rotatably connected inside the fixing plate. One end of the adjusting bolt is rotatably connected to the inner wall of the suction box. Connecting plates are threaded onto the outer walls of the two adjusting bolts. A scraper is fixed across the bottom surface of the two connecting plates. The scraper is slidably connected to the bottom surface inside the suction port of the suction box.
[0012] Furthermore, the scraper has a right-angled triangular structure, and the inclined surface of the triangular structure of the scraper is set downward along the inside of the suction port.
[0013] Furthermore, the inner wall of the side support plate is provided with a sliding groove, and an extension part is slidably connected inside the sliding groove. The extension part is elastically inserted into the inside of the side support plate, and one side of the extension part slides against the top surface of the lower die.
[0014] Furthermore, the extension part includes a slide plate slidably connected inside the slide groove. Two guide bolts are connected to one side of the slide plate. The guide bolts are connected through the inside of the side support plate. A spring is sleeved on the outer wall of the guide bolt. One end of the spring is connected to the outer wall of the side support plate. A limit plate is fixed on the other side of the slide plate. The limit plate slides against the top surface of the lower die.
[0015] Furthermore, the upper plate assembly includes a second bracket fixed to the top surface of the base plate. Two second electric rollers and a second conveying roller are rotatably connected inside the second bracket. The second electric rollers and the second conveying rollers are fitted with a gap to convey a leaf spring inserted between the upper punch and the lower die. A receiving box is fixed to the inner wall of the second bracket.
[0016] Beneficial effects: One or more technical solutions provided in this invention have at least the following technical effects or advantages: 1. The base plate, side support plates, and top plate form a stable main frame for the rib forming mold. The hydraulic rod drives the upper punch to descend, which cooperates with the lower die to form the ribs at the ends of the leaf spring. The structure is stable, the rib forming force is controllable, and the stability of the leaf spring rib forming is guaranteed.
[0017] 2. An extension cavity is provided between the suction baffle and the lower die to provide space for the leaf spring end to extend outward, thereby preventing the leaf spring from accumulating metal at the end and increasing its thickness during the pressing process. At the same time, it also limits the end of the leaf spring to prevent it from shifting during pressing and to ensure the stability of the leaf spring end extension during pressing.
[0018] 3. The fixed measuring component is inserted into the extension cavity. It drives the fixed measuring plate to move through the first electric roller and the first conveying roller. The encoder detects the rotation signal of the first electric roller and accurately detects the extension length of the leaf spring end into the extension cavity. This provides data support for the control of the rib extension size, ensuring the dimensional accuracy of the leaf spring after rib extension. It achieves controllable rib extension size and allows for rib processing by reserving the extension size, avoiding excessive extension and accumulation that increases the thickness of the leaf spring end, thus ensuring the product quality of the leaf spring after rib forming.
[0019] 4. The upper plate assembly enables automatic pushing of the leaf spring, accurately delivering the leaf spring between the upper punch and the lower die, realizing the connection of automated operation of conveying, positioning, detection and rib pressing, and improving the convenience of rib pressing operation.
[0020] 5. The mounting bracket of the suction baffle assembly provides installation support for the baffle component, push plate, and gear, ensuring structural stability. The spring pusher pushes the baffle component to extend outward into the extension cavity and insert it into the second positioning groove of the measuring plate, thereby achieving positioning of the measuring plate and the leaf spring within the extension cavity, preventing displacement, and ensuring the accuracy and stability of operation.
[0021] 6. The vacuum cleaner is fixed to the side wall of the mounting frame and is connected to the cavity structure of the scraper component through a telescopic hose, achieving negative pressure adsorption of debris. The suction port at the bottom of the scraper component is connected to the cavity and extends into the extension cavity, which can accurately align with the end of the leaf spring and suck up the debris generated during cleaning in a timely manner, improving the cleaning effect of debris at the end of the leaf spring, avoiding debris interference that affects the extension effect of the leaf spring at the end, and ensuring the accuracy of the measurement plate in contacting the end of the leaf spring to detect the extension dimension, thus improving the reliability of the extension dimension and improving the accuracy of the compression of the leaf spring.
[0022] 7. After the scraper component is in position, the suction port and the scraper component are moved synchronously. The scraper component rises to clean the leaf spring while simultaneously removing debris, achieving simultaneous cleaning and removal. By removing debris in a timely manner, it is easier for the end face of the measuring plate to be flush with and stably attached to the end face of the leaf spring, further ensuring the accuracy and stability of the measuring plate in detecting the extension of the leaf spring. No manual intervention is required, making the operation simple and efficient.
[0023] 8. The scraping section inside the suction port can scrape off stubborn debris from the end face of the leaf spring. The scraped debris can directly enter the suction port and be sucked up, making the cleaning more thorough, ensuring the flatness of the end face of the leaf spring, and further improving the accuracy of subsequent extension dimension detection. In addition, the cavity structure of the suction box provides a channel for debris transportation, ensuring that the debris is smoothly sucked up by the vacuum cleaner and avoiding residue.
[0024] 9. The adjusting bolt is threaded with the connecting plate. Rotating the adjusting bolt can drive the connecting plate to move the scraper horizontally. This can compensate for the scraping position of the scraper after the end face of the leaf spring has been worn for a long time. This ensures that the scraper can continuously scrape multiple end faces of the leaf spring without the need for frequent scraper replacement, thus extending the service life of the parts and reducing production costs.
[0025] 10. The scraper adopts a right-angled triangular structure with the sloped surface facing downwards. The scraped debris can slide naturally down the slope into the suction port, avoiding accumulation at the edge of the suction port. This ensures that the debris is smoothly picked up by the vacuum cleaner, guaranteeing continuous and smooth cleaning operations, improving cleaning efficiency, and preventing debris from re-adhering to the high-temperature end face of the leaf spring, thus ensuring the accuracy of subsequent rib pressing. Attached Figure Description
[0026] Figure 1 This is a schematic diagram of the end pressure rib mold structure for automotive leaf springs according to the present invention.
[0027] Figure 2 This is a schematic diagram of the connection structure between the side support plate, the measuring component, and the suction component of the present invention.
[0028] Figure 3 This is a schematic diagram of the side support plate structure of the present invention.
[0029] Figure 4 This is a schematic diagram of the internal structure of the suction-blocking component of the present invention.
[0030] Figure 5 This is a schematic diagram of the internal structure of the suction box of the present invention.
[0031] Figure 6 for Figure 5 A magnified schematic diagram of the structure at point A in the middle.
[0032] Figure 7 This is a schematic diagram of the measurement component structure of the present invention.
[0033] Figure 8 This is a schematic diagram of the upper plate assembly structure of the present invention.
[0034] Figure 9 This is a cross-sectional view of the overall structure of the present invention in the state of cleaning the end face of the leaf spring.
[0035] Figure 10 for Figure 9 A magnified schematic diagram of the structure at point B in the middle.
[0036] Figure 11 This is a cross-sectional view of the structure of the present invention in the preparation of the leaf spring compression rib forming state.
[0037] Explanation of the numbers in the diagram: 1. Base plate; 200. Side support plate; 210. Guide bolt; 220. Spring; 230. Slide plate; 240. Limiting plate; 250. Slide groove; 300. Top plate; 400. Hydraulic rod; 500. Upper punch; 510. Pressure plate; 600. Lower die; 610. First positioning groove; 700. Measuring assembly; 710. First bracket; 720. First electric roller; 730. Measuring plate; 731. Second positioning groove; 740. Encoder; 750. Positioning frame; 760, Positioning bolt; 770, Limiting groove; 780, First conveying roller; 800, Suction baffle assembly; 810, Fixing frame; 820, Push plate; 830, Gear; 840, Scraping baffle assembly; 841, Suction box; 842, Fixing plate; 843, Adjusting bolt; 844, Connecting plate; 845, Scraper; 850, Spring push plate; 860, Vacuum cleaner; 900, Upper plate assembly; 910, Second bracket; 920, Second electric roller; 930, Second conveying roller; 940, Receiving box. Detailed Implementation
[0038] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, 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, 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.
[0039] In the description of this invention, it should be understood that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.
[0040] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or a link; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.
[0041] Reference Figures 1-11This invention provides an end-stitching mold for automotive leaf springs, comprising a base plate 1. Side support plates 200 and an upper plate assembly 900 are fixed to the top surface of the base plate 1. Two side support plates 200 are fixed in parallel about the vertical centerline of the base plate 1. A top plate 300 is fixed across the top surface of the two side support plates 200. A hydraulic rod 400 is connected through the top surface of the top plate 300. An upper punch 500 is connected to the free bottom end of the hydraulic rod 400. A suction assembly 800 and a lower die 6 are fixed between the inner walls of the two side support plates 200. 00, a gap is set between the bottom surface of the suction-blocking assembly 800 and the top surface of the lower die 600, and the gap is set as an extension cavity for the end of the leaf spring pressure bar to extend outward. A measuring assembly 700 is fixed across the side walls of the two side support plates 200. One side of the measuring assembly 700 is inserted into the gap between the suction-blocking assembly 800 and the lower die 600. The measuring assembly 700 is used to detect the extension length of the end of the leaf spring into the extension cavity. The upper plate assembly 900 is used to push the leaf spring between the upper punch 500 and the lower die 600. The measuring component 700 includes a first bracket 710 fixed between the side walls of two side support plates 200. A first electric roller 720 and a first conveying roller 780 are rotatably connected inside the first bracket 710. An encoder 740 is connected to one end of the first electric roller 720. The encoder 740 is fixed to the side wall of the first bracket 710. A measuring plate 730 is rolled and attached between the first electric roller 720 and the first conveying roller 780. One side of the measuring plate 730 is slidably inserted into the extension cavity. The encoder 740 detects the extension length of the leaf spring by detecting the rotation signal of the first electric roller 720. The base plate 1, side support plate 200, and top plate 300 form a stable main frame of the rib forming mold. The hydraulic rod 400 drives the upper punch 500 to descend, which cooperates with the lower die 600 to form the end ribs of the leaf spring. The structure is stable, the rib forming force is controllable, and the stability of the leaf spring rib forming is guaranteed. An extension cavity is provided between the suction assembly 800 and the lower die 600 to provide space for the end of the leaf spring to extend outward, thereby preventing the metal from accumulating at the end of the leaf spring and increasing its thickness during the pressing process. At the same time, it also limits the end of the leaf spring to prevent it from shifting during the pressing process and ensures the stability of the end extension of the leaf spring during the pressing process. The measuring component 700 is inserted into the extension cavity. It drives the measuring plate 730 to move through the first electric roller 720 and the first conveying roller 780. The encoder 740 detects the rotation signal of the first electric roller 720 and accurately detects the extension length of the leaf spring end into the extension cavity. This provides data support for the control of the rib extension size, ensuring the dimensional accuracy of the leaf spring after rib extension. It enables controllable rib extension size and allows for rib processing by reserving the extension size, avoiding excessive extension and accumulation that increases the thickness of the leaf spring end. This ensures the product quality of the leaf spring after rib forming. The upper plate assembly 900 enables automatic pushing of the leaf spring, accurately delivering the leaf spring between the upper punch 500 and the lower die 600, realizing the connection of automated operation of conveying, positioning, detection and rib pressing, and improving the convenience of rib pressing operation.
[0042] In this embodiment, the measuring component 700 further includes a positioning frame 750 sleeved on the outer wall of the measuring plate 730. A limiting groove 770 is fixed on the side wall of the positioning frame 750. The limiting groove 770 is snapped into the side wall of the measuring plate 730. There are two limiting grooves 770 fixed in mirror image about the vertical center line of the positioning frame 750. A positioning bolt 760 is connected through the side wall of the limiting groove 770. One end of the positioning bolt 760 is attached to and clamped to the side wall of the measuring plate 730. The positioning frame 750 is sleeved on the outer wall of the measuring plate 730, which limits the measuring plate 730 and prevents it from shifting or shaking after sliding into the extension cavity, thus ensuring the positioning accuracy of the measuring plate 730. Two symmetrically arranged limiting grooves 770 are engaged with the side wall of the measuring plate 730. The positioning bolt 760 passes through the limiting groove 770 and fits and clamps the measuring plate 730, which can realize the fixed positioning of the measuring plate 730 and prevent displacement after detection. Loosening the positioning bolt 760 can adjust the initial position of the measuring plate 730, adapting to the detection requirements of the extension length of different specifications of leaf springs and improving the versatility of the device.
[0043] In this embodiment, the suction-blocking assembly 800 includes a fixed frame 810 fixed between the inner walls of the two side support plates 200. A scraping component 840 is inserted into the bottom surface of the fixed frame 810. Two spring push plates 850 are connected to the top surface of the scraping component 840. The top surface of the spring push plates 850 is connected to the inside of the fixed frame 810. A push plate 820 is inserted into the top surface of the fixed frame 810. A gear 830 is rotatably connected inside the fixed frame 810. The gear 830 is meshed between the side wall of the scraping component 840 and the side wall of the push plate 820. A pressure plate 510 is fixed to the side wall of the upper punch 500. The pressure plate 510 is disposed on the top of the push plate 820. A second positioning groove 731 is opened on the top surface of the measuring plate 730 for the scraping component 840 to be inserted. The scraping component 840 is pushed outward to the bottom of the fixed frame 810 by the spring push plates 850 to position the measuring plate 730 and the leaf spring inside the extension cavity. The mounting bracket 810 of the suction baffle assembly 800 provides mounting support for the scraping component 840, the push plate 820, and the gear 830, ensuring structural stability. The spring push plate 850 pushes the scraping component 840 to extend outward into the extension cavity and insert it into the second positioning groove 731 of the measuring plate 730, thereby achieving the positioning of the measuring plate 730 and the leaf spring within the extension cavity, preventing displacement, and thus ensuring the accuracy and stability of the operation. The pressure plate 510 on the side wall of the upper punch 500 cooperates with the push plate 820. When pressing the ribs, the pressure plate 510 pushes the push plate 820, which drives the scraper component 840 to rise through the meshing of the gear 830, realizing the linkage between the pressing action and the scraper component 840. No manual intervention is required, which improves the convenience and efficiency of operation. When the scraper component 840 extends outward, it can limit the end of the leaf spring, further ensuring the accurate positioning of the leaf spring, and at the same time, it can initially clean the debris at the end of the leaf spring, ensuring the inspection accuracy after the subsequent pressing operation.
[0044] In this embodiment, the suction blocking assembly 800 further includes a vacuum cleaner 860 fixed to the side wall of the fixing frame 810. The scraping component 840 has a hollow structure inside. The vacuum cleaner 860 and the hollow structure of the scraping component 840 are connected through a telescopic hose. The bottom of the scraping component 840 near the upper punch 500 has a suction port. The suction port is connected through the hollow structure of the scraping component 840. The suction port extends outward from the scraping component 840 and is located inside the extension cavity. The vacuum cleaner 860 is fixed to the side wall of the mounting bracket 810 and is connected to the cavity structure of the scraper component 840 through a telescopic hose to achieve negative pressure adsorption of debris. The suction port at the bottom of the scraper component 840 is connected to the cavity and extends into the extension cavity, which can accurately align with the end of the leaf spring and suck up the debris generated during cleaning in a timely manner, thereby improving the cleaning effect of debris at the end of the leaf spring, avoiding debris interference that affects the extension effect of the leaf spring at the end, and ensuring the accuracy of the measurement plate 730 in contacting the end of the leaf spring to detect the extension dimension, thus improving the reliability of the extension dimension and improving the accuracy of the compression of the leaf spring. The suction port moves synchronously with the scraper component 840. While the scraper component 840 is limiting its position and cleaning the leaf spring, it simultaneously absorbs debris, achieving simultaneous cleaning and absorption without manual intervention. This is simple, efficient, and prevents debris from scattering inside the equipment, reducing the risk of component jamming and extending equipment lifespan. It also ensures a clean ribbed surface, improving the quality of the rib formation. After the scraper component 840 is limited, the suction port and the scraper component 840 are moved synchronously. The scraper component 840 rises to clean the leaf spring while simultaneously removing debris, achieving simultaneous cleaning and removal. By removing debris in a timely manner, it is easy for the end face of the subsequent measuring plate 730 to be flush with and stably attached to the end face of the leaf spring, further ensuring the accuracy and stability of the measuring plate 730 in detecting the extension of the leaf spring. No manual intervention is required, making the operation simple and efficient.
[0045] In this embodiment, the scraping component 840 includes a suction box 841 inserted into the fixed frame 810. The suction box 841 has an inclined structure on the side near the measuring plate 730. The suction box 841 is pushed up by the measuring plate 730 to be inserted into the fixed frame 810. One side of the suction box 841 is meshed with the gear 830. A suction port is provided at the bottom of the side wall of the suction box 841. A scraping part is fixed inside the suction port. The scraping part is pushed up by the suction box 841 to scrape and clean the end face of the leaf spring. The top surface of the lower die 600 is provided with a first positioning groove 610 for the insertion of the suction box 841. The suction box 841 (the main body of the scraping component 840) has a sloping structure on one side. When the measuring plate 730 is inserted, the sloping structure can push the suction box 841 to rise, realizing the linkage between the measuring plate 730 and the suction box 841, avoiding collision damage. The suction box 841 is meshed with the gear 830, which, together with the push plate 820, realizes precise control of the lifting action, and the lifting is smooth and without jamming. The scraping section inside the suction port can scrape off stubborn debris from the end face of the leaf spring. The scraped debris can directly enter the suction port and be sucked up, making the cleaning more thorough and ensuring the flatness of the end face of the leaf spring. This further improves the accuracy of subsequent extension dimension detection. In addition, the cavity structure of the suction box 841 provides a channel for debris transportation, ensuring that the debris is smoothly sucked up by the vacuum cleaner 860 and avoiding residue. The first positioning groove 610 on the top surface of the lower die 600 can realize the positioning of the suction box 841 after it descends, avoid the suction box 841 from shifting, and ensure the positioning accuracy of the suction box 841 on the leaf spring and the cleaning accuracy of the leaf spring end face.
[0046] In this embodiment, the scraping part includes a fixing plate 842 fixed to the top surface inside the suction port of the suction box 841. Two adjusting bolts 843 are rotatably connected inside the fixing plate 842. One end of the adjusting bolt 843 is rotatably connected to the inner wall of the suction box 841. The outer walls of the two adjusting bolts 843 are threaded with connecting plates 844. A scraper 845 is fixed across the bottom surface of the two connecting plates 844. The scraper 845 is slidably connected to the bottom surface inside the suction port of the suction box 841. The adjusting bolt 843 is threadedly engaged with the connecting plate 844. Rotating the adjusting bolt 843 drives the connecting plate 844 to move the scraper 845 horizontally. This compensates for the scraping position of the scraper 845 after it wears down from scraping the end face of the leaf spring for a long time. This ensures that the scraper 845 can continuously scrape multiple leaf spring end faces without the need for frequent replacement of the scraper 845, thus extending the service life of the component and reducing production costs. The two adjusting bolts 843 are adjusted synchronously to ensure that the scraper 845 has a stable posture during horizontal movement, a high degree of contact with the end face of the leaf spring, and more thorough scraping. The scraper 845 is slidably connected to the bottom surface inside the suction port, allowing for smooth horizontal movement. The position of the scraper 845 can be flexibly adjusted according to the specifications of the leaf spring to adapt to the scraping needs of different leaf springs.
[0047] In this embodiment, the scraper 845 has a right-angled triangular structure, and the inclined surface of the triangular structure of the scraper 845 is set downward along the inside of the suction port. The scraper 845 adopts a right-angled triangular structure with the inclined surface set downward, so that the scraped debris can slide naturally down the inclined surface into the inside of the suction port, avoiding accumulation at the edge of the suction port, ensuring that the debris is smoothly absorbed by the vacuum cleaner 860, ensuring continuous and smooth cleaning operation, improving cleaning efficiency, and preventing debris from re-adhering to the end face of the leaf spring at a high temperature, ensuring the accuracy of subsequent rib pressing; the inclined surface structure can reduce the resistance during scraping, avoid damage to the end face of the leaf spring, and ensure the surface quality of the leaf spring.
[0048] In this embodiment, the inner wall of the side support plate 200 is provided with a sliding groove 250, and an extension part is slidably connected inside the sliding groove 250. The extension part is elastically inserted into the inside of the side support plate 200, and one side of the extension part is slidably attached to the top surface of the lower die 600. The groove 250 on the inner wall of the side support plate 200 provides a sliding guide for the extension part. The extension part is elastically inserted into the side support plate 200 and can be adaptively adjusted according to the width of the leaf spring. The extension part slides against the top surface of the lower die 600, which plays a lateral limiting role on both sides of the leaf spring, preventing the leaf spring from shifting to both sides during pressing and improving the pressing accuracy. The elastic structure can buffer the impact force when the leaf spring is extended, avoid direct friction between the leaf spring and the side support plate 200, and protect the surface quality of the leaf spring. The extension part can slide flexibly to adapt to leaf springs of different widths, improving the versatility of the device.
[0049] In this embodiment, the extension part includes a slide plate 230 slidably connected inside the slide groove 250. Two guide bolts 210 are connected to one side of the slide plate 230. The guide bolts 210 are connected through the inside of the side support plate 200. A spring 220 is sleeved on the outer wall of the guide bolts 210. One end of the spring 220 is connected to the outer wall of the side support plate 200. A limit plate 240 is fixed on the other side of the slide plate 230. The limit plate 240 slides against the top surface of the lower die 600. The slide plate 230 is slidably connected inside the slide groove 250. The guide bolt 210 passes through the side support plate 200 and is sleeved with the spring 220. The elastic force of the spring 220 realizes the automatic reset of the extension part. After the leaf spring is extended, it can quickly return to the initial position without affecting the operation of the next set of leaf springs. The guide bolt 210 guides the slide plate 230, and the two guide bolts 210 are symmetrically arranged to ensure that the slide plate 230 slides smoothly, the spring 220 is evenly stressed, the service life of the extension part is extended, and the extension part is prevented from deviating when sliding, thus ensuring the lateral limiting accuracy. The limiting plate 240 is fixed to one side of the slide plate 230, fits against the top surface of the lower die 600, and flexibly contacts the side of the leaf spring to avoid scratching the surface of the leaf spring.
[0050] In this embodiment, the upper plate assembly 900 includes a second bracket 910 fixed to the top surface of the base plate 1. Two second electric rollers 920 and a second conveying roller 930 are rotatably connected inside the second bracket 910. The second electric rollers 920 and the second conveying roller 930 are fitted with a gap to convey the leaf spring inserted between the upper punch 500 and the lower die 600. A receiving box 940 is fixed to the inner wall of the second bracket 910. The second bracket 910 provides mounting support for the second electric roller 920 and the second conveying roller 930. The two second electric rollers 920 and the second conveying roller 930 cooperate to realize the automatic conveying of the leaf springs. During the conveying process, they play a positioning role for the leaf springs, ensuring that the leaf springs are accurately pushed between the upper punch 500 and the lower die 600 without manual intervention, thus improving production efficiency. During the conveying process, the second electric rollers 920 and the second conveying roller 930 can roll and peel off the shavings on the surface of the leaf springs. The peeled shavings fall into the collection box 940, realizing the centralized recycling of the shavings.
[0051] Specifically, according to Figures 1-11 As shown, the worker heats the end of the leaf spring with the reserved extension dimension of the pressure rib at high temperature, inserts the heated leaf spring end between the second electric roller 920 and the second conveying roller 930, and then controls the second electric roller 920 to start through the main controller, which works with the second conveying roller 930 to transport the heated leaf spring. During the transport process, the dander on the surface of the leaf spring is rolled off and collected by the collection box 940. Then the transport continues to guide the leaf spring end into the lower concave mold 600, inserting the leaf spring end into the gap between the bottom surface of the fixed frame 810 and the top surface of the lower concave mold 600. The two sides of the leaf spring are respectively attached to the two limiting plates 240. The bottom end of the suction box 841 is inserted into the first positioning groove 610 for positioning until the end face of the leaf spring is attached to the suction port of the suction box 841. The second electric roller 920 and the second conveying roller 930 work together to position the leaf spring. The main controller controls the vacuum cleaner 860 to start, and the dander on the end face of the leaf spring is initially removed through the suction box 841. Then, the main controller starts the first electric roller 720, which, together with the first conveying roller 780, conveys the fixed measuring plate 730 to be inserted between the bottom surface of the fixed frame 810 and the top surface of the lower die 600. The fixed measuring plate 730 pushes the inclined structure of the suction box 841, lifting the suction box 841. The suction box 841 rises and compresses the spring push plate 850. During the rising process of the suction box 841, the scraper 845 scrapes off the debris from the end face of the leaf spring. The debris enters the interior of the suction box 841 along the inclined surface of the scraper 845 and is promptly removed by the vacuum cleaner 860 until the suction box 841 rises and is completely retracted into the fixed frame. Inside the frame 810, the measuring plate 730 continues to move and insert between the bottom surface of the fixed frame 810 and the top surface of the lower die 600. Then, the measuring plate 730 is in contact with the end face of the leaf spring. The measuring plate 730 pushes the leaf spring to move synchronously until the leaf spring is just pushed out from the bottom surface of the fixed frame 810. The contact end of the measuring plate 730 and the leaf spring is flush with the side wall of the fixed frame 810. At this time, the positioning frame 750 is in contact with the first bracket 710 for positioning. At the same time, the bottom end of the suction box 841 is inserted into the second positioning groove 731 on the measuring plate 730 for positioning. The encoder 740 records the offset signal at this time and sends it to the main controller. Then, the hydraulic rod 400 is activated to push the upper punch 500 downward, the pressure plate 510 moves downward, and pushes the push plate 820. The push plate 820, through the meshing of the gear 830, drives the insertion box 841 upward. The insertion box 841 is pulled out from inside the second positioning groove 731, releasing the positioning plate. The upper punch 500 and the lower die 600 cooperate to form the leaf spring rib. The leaf spring extends to both sides and the end at the same time. The extension of the leaf spring on both sides pushes the limiting plate 240 to move. The slide plate 230 slides inside the slide groove 250, causing the guide bolt 210 to slide and stretch the spring 220. The extension of the leaf spring end pushes the measuring plate. 730 moves, the fixed measuring plate 730 drives the first electric roller 720 and the first conveying roller 780 to rotate, and records the rotation data through the encoder 740 and transmits the rotation data to the main controller to know the end extension dimension of the leaf spring. If the extension dimension is within the required range, the leaf spring is taken out after the pressing and forming of the leaf spring ribs and subjected to heat treatment operations of quenching and tempering, so as to ensure the strength and elasticity of the spring 220 after pressing and forming. If the detected leaf spring extension dimension after pressing and forming exceeds or does not meet the required range, it indicates that the leaf spring material is not up to standard and it is difficult to meet the quality requirements after pressing and forming. It is then returned to the previous station for recycling and reprocessing. After the leaf spring is continuously pressed and shaped for a period of time, the scraper 845 may gradually wear down when scraping the debris from the end face of the leaf spring. To ensure the scraping and cleaning effect, simply rotate the adjusting bolt 843. The adjusting bolt 843 pushes the connecting plate 844 to move horizontally through the thread, so that the scraper 845 moves horizontally out of the suction port of the suction box 841, thereby compensating for the wear of the scraper 845, ensuring the scraping effect, extending the service life of the device, and reducing production costs.
[0052] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. All electrical components mentioned herein are electrically connected to the main controller and 220V AC mains power, and the main controller is a common existing technology such as a computer that performs control functions. Content not described in detail in this specification is prior art known to those skilled in the art.
[0053] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims
1. A mold for pressing the end ribs of automotive leaf springs, characterized in that: The system includes a base plate, on the top surface of which a side support plate and an upper plate assembly are fixed. There are two side support plates fixed in mirror image about the vertical centerline of the base plate. A top plate is fixed across the top surface of the two side support plates. A hydraulic rod is connected through the top surface of the top plate. An upper punch is connected to the free bottom end of the hydraulic rod. A suction-blocking assembly and a lower die are fixed between the inner walls of the two side support plates. A gap is set between the bottom surface of the suction-blocking assembly and the top surface of the lower die, and the gap is set as an extension cavity for the end of the leaf spring pressure bar to extend outward. A measuring assembly is fixed across the side walls of the two side support plates. One side of the measuring assembly is inserted into the gap between the suction-blocking assembly and the lower die. The measuring assembly is used to detect the extension length of the leaf spring end into the extension cavity. The upper plate assembly is used to push the leaf spring between the upper punch and the lower die. The measuring assembly includes a first bracket fixed between the side walls of two side support plates. A first electric roller and a first conveying roller are rotatably connected inside the first bracket. An encoder is connected to one end of the first electric roller. The encoder is fixed to the side wall of the first bracket. A measuring plate is rolled and attached between the first electric roller and the first conveying roller. One side of the measuring plate is slidably inserted into the extension cavity. The encoder detects the extension length of the leaf spring by detecting the rotation signal of the first electric roller.
2. The end rib mold for automotive leaf springs according to claim 1, characterized in that: The measurement assembly also includes a positioning frame sleeved on the outer wall of the measurement plate. The side wall of the positioning frame is fixed with a limiting groove. The limiting groove is engaged with the side wall of the measurement plate. There are two limiting grooves fixed in mirror image about the vertical center line of the positioning frame. A positioning bolt is connected through the side wall of the limiting groove. One end of the positioning bolt is attached to and clamped to the side wall of the measurement plate.
3. The end rib mold for automotive leaf springs according to claim 1, characterized in that: The suction-blocking assembly includes a fixed frame fixed between the inner walls of two side support plates. A scraping component is inserted into the bottom surface of the fixed frame. Two spring-loaded tabs are connected to the top surface of the scraping component. The top surface of the spring-loaded tabs is connected to the inside of the fixed frame. A push plate is inserted into the top surface of the fixed frame. A gear is rotatably connected inside the fixed frame. The gear meshes between the side wall of the scraping component and the side wall of the push plate. A pressure plate is fixed to the side wall of the upper punch. The pressure plate is located on the top of the push plate. A second positioning groove is opened on the top surface of the measuring plate for the scraping component to be inserted. The scraping component is pushed outward to the bottom of the fixed frame by the spring-loaded tabs to position the measuring plate and the leaf spring inside the extension cavity.
4. The end rib mold for automotive leaf springs according to claim 3, characterized in that: The suction blocking assembly also includes a vacuum cleaner fixed to the side wall of the fixed frame. The inside of the scraping component is a hollow structure. The inside of the vacuum cleaner and the hollow structure of the scraping component are connected through a telescopic hose. A suction port is opened at the bottom of the scraping component near the upper punch. The suction port is connected through the hollow structure of the scraping component. The suction port is set inside the extension cavity through the scraping component.
5. The end rib mold for automotive leaf springs according to claim 4, characterized in that: The scraping baffle includes a suction box inserted into the fixed frame. The suction box has an inclined structure on the side near the measuring plate. The suction box is pushed up by the measuring plate to be inserted into the fixed frame. One side of the suction box is connected to a gear. A suction port is provided at the bottom of the side wall of the suction box. A scraping part is fixed inside the suction port. The scraping part is pushed up by the suction box to scrape and clean the end face of the leaf spring. A first positioning groove for the insertion of the suction box is opened on the top surface of the lower die.
6. The end rib mold for automotive leaf springs according to claim 5, characterized in that: The scraping part includes a fixing plate fixed to the top surface inside the suction port of the suction box. Two adjusting bolts are rotatably connected inside the fixing plate. One end of the adjusting bolt is rotatably connected to the inner wall of the suction box. The outer walls of the two adjusting bolts are threaded with connecting plates. The bottom surfaces of the two connecting plates are horizontally fixed with scrapers. The scrapers are slidably connected to the bottom surface inside the suction port of the suction box.
7. The end rib mold for automotive leaf springs according to claim 6, characterized in that: The scraper has a right-angled triangular structure, and the inclined surface of the triangular structure of the scraper is set downward along the inside of the suction port.
8. The end rib mold for automotive leaf springs according to claim 1, characterized in that: The inner wall of the side support plate is provided with a sliding groove, and an extension part is slidably connected inside the sliding groove. The extension part is elastically inserted into the inside of the side support plate, and one side of the extension part slides against the top surface of the lower die.
9. The end rib mold for automotive leaf springs according to claim 8, characterized in that: The extension section includes a slide plate slidably connected inside the slide groove. Two guide bolts are connected to one side of the slide plate. The guide bolts are connected through the inside of the side support plate. A spring is sleeved on the outer wall of the guide bolt. One end of the spring is connected to the outer wall of the side support plate. A limit plate is fixed on the other side of the slide plate. The limit plate slides against the top surface of the lower die.
10. The end rib mold for automotive leaf springs according to claim 1, characterized in that: The upper plate assembly includes a second bracket fixed to the top surface of the base plate. Two second electric rollers and a second conveying roller are rotatably connected inside the second bracket. The second electric rollers and the second conveying rollers are fitted with a gap to convey a leaf spring inserted between the upper punch and the lower die. A receiving box is fixed to the inner wall of the second bracket.