Bending die for mechanical parts to prevent jamming and disengagement

Abstract

The utility model discloses a kind of anti-jamming and easy-to-separate mechanical part bending die, it is related to machining technical field, including upper die plate and lower die plate, the upper die plate and lower die plate between being equipped with the guiding assembly of relatively slidable, for realizing the action of mould closing and mould opening;The middle part of the lower die plate is equipped with floating seat, the top of the floating seat is connected with bearing plate by elastic expansion mechanism;A kind of anti-jamming and easy-to-separate mechanical part bending die provided by the utility model, by the combination design of floating seat and elastic expansion mechanism, bearing plate can be automatically adjusted height according to the shape of workpiece in mould closing process, to adapt to the workpiece processing requirement of different thickness, while reducing the jamming phenomenon caused by workpiece springback.

Description

Technical Field

[0001] This utility model relates to the field of mechanical processing technology, specifically to a bending die for mechanical parts that prevents jamming and easy disengagement. Background Technology

[0002] Bending dies are widely used in the forming process of various parts in the machining field. However, existing bending dies have some shortcomings in actual use, especially the tendency for jamming to occur after the workpiece is bent, leading to problems such as difficulty in demolding, reduced production efficiency, and even product damage.

[0003] A search revealed a bending die with patent number CN114433725B, authorized on March 12, 2024. This die includes an upper die and a lower die. The lower die is equipped with side ejection components and corner ejection components. A linkage structure during die closing enables simultaneous pressing and bending of the workpiece's sides and corners, thus improving die-marking issues. While this design improves the effect of circumferential synchronous bending and optimizes forming quality, the ejection components rely on a fixed guide structure, lacking flexible adjustment capabilities. When dealing with workpieces with complex shapes or significant springback, issues such as difficult demolding and workpiece jamming may still occur, affecting overall production efficiency.

[0004] In addition, a bending die with patent number CN105945152B, authorized on March 2, 2018, was also found. This die uses multiple height-adjustable pressure blocks to perform bending operations at different positions, exhibiting strong versatility. However, this die mainly relies on the contact between the curved surface of the pressure block's bottom and the workpiece to achieve bending, without a dedicated demolding auxiliary mechanism. Therefore, after bending, the workpiece may adhere to the die surface due to the large adhesion force, making it difficult to remove and even requiring manual intervention, increasing labor intensity and reducing automation levels.

[0005] While the two existing technical solutions mentioned above have improved bending accuracy and adaptability, they still have limitations in preventing jamming and facilitating demolding after workpiece bending, especially in continuous automated production. Therefore, developing a mechanical part bending die with anti-jamming and easy-to-release functions has become an urgent problem to be solved in order to improve demolding efficiency, reduce manual intervention, and meet the needs of modern manufacturing for efficient and intelligent production. Utility Model Content

[0006] This utility model provides a bending die for mechanical parts that prevents jamming and facilitates easy removal, aiming to solve the problems of easy jamming and inconvenient demolding of workpieces after bending in the prior art. The specific solution is as follows:

[0007] A mechanical part bending die with anti-jamming and easy disengagement includes an upper template and a lower template. A guide assembly that can slide relative to the upper and lower templates is provided between them to realize the actions of mold closing and mold opening. A floating seat is installed in the middle of the lower template, and a support plate is connected to the top of the floating seat via an elastic telescopic mechanism. The top surface of the support plate has multiple arc-shaped protrusions, which are evenly distributed along the length of the support plate. An airflow channel penetrating its sidewalls is provided inside the floating seat. One end of the airflow channel is connected to an external air source, and the other end extends to the bottom surface of the support plate and corresponds to the arc-shaped protrusions on its top surface. A pressure block is installed at the bottom of the upper template. Multiple grooves are formed on the bottom surface of the pressure block, and the positions of the grooves correspond one-to-one with the arc-shaped protrusions on the support plate. Auxiliary separation mechanisms are provided on both sides of the pressure block. Each auxiliary separation mechanism includes a swing arm and a drive rod. One end of the swing arm is hinged to the upper template, and the other end is hinged to one end of the drive rod. The other end of the drive rod passes through the upper template and is connected to an external driving device.

[0008] As a preferred embodiment, the bottom of the floating seat is slidably connected to the lower template via a slide rail, and the two ends of the slide rail are provided with stops; adjusting bolts are symmetrically installed on both sides of the floating seat, one end of the adjusting bolt passes through the floating seat and is threadedly connected to the lower template, for adjusting the horizontal position of the floating seat.

[0009] As another preferred embodiment, the elastic telescopic mechanism includes a sleeve, a piston rod, and a return spring; the bottom of the sleeve is fixed to the top surface of the floating seat, one end of the piston rod is inserted into the sleeve and slides in cooperation with the sleeve, the return spring is sleeved on the outer periphery of the piston rod, and one end of the return spring is fixedly connected to the top inner wall of the sleeve, and the other end is fixedly connected to the top end of the piston rod; the other end of the piston rod is fixedly connected to the bottom surface of the bearing plate.

[0010] Furthermore, a guide vane is provided at the outlet of the airflow channel. The guide vane is arranged at an angle, and the angle of inclination of the guide vane faces the outside of the support plate. The number of guide vanes is the same as the number of arc-shaped protrusions, and they correspond one-to-one with the arc-shaped protrusions.

[0011] In addition, the auxiliary separation mechanism also includes a limiting block, which is fixed to the side of the upper template and has an arc-shaped groove at the bottom; the middle part of the swing arm has a protrusion that matches the arc-shaped groove, which is embedded in the arc-shaped groove and slides in cooperation with it; the swing range of the swing arm is limited by the curvature of the arc-shaped groove.

[0012] As an improvement, a buffer sleeve is provided on the outer periphery of the drive rod, and the two ends of the buffer sleeve are fixedly connected to the outer wall of the drive rod and the inner wall of the upper template, respectively; a buffer spring is provided inside the buffer sleeve, one end of the buffer spring is fixedly connected to the outer wall of the drive rod, and the other end is fixedly connected to the inner wall of the buffer sleeve.

[0013] In addition, guide grooves are symmetrically provided on both sides of the pressure block, and guide blocks are slidably installed inside the guide grooves. The bottom of the guide blocks is fixedly connected to the upper template. The top of the guide blocks is provided with ball bearings, which are embedded in the top of the guide grooves and roll in cooperation with the guide grooves.

[0014] Furthermore, a drive motor is installed on the top of the upper template, and the output shaft of the drive motor is connected to the drive rod through a coupling; a shock-absorbing pad is provided at the bottom of the drive motor, and the bottom of the shock-absorbing pad is fixedly connected to the upper template.

[0015] Furthermore, the top of the floating seat is provided with multiple positioning holes, which are evenly distributed along the length of the floating seat; the bottom of the support plate is provided with positioning posts corresponding to the positioning holes, which are inserted into the positioning holes and slide in cooperation with the positioning holes.

[0016] Finally, support plates are symmetrically installed on both sides of the lower template, and pulleys are provided on the top of the support plates. The outer periphery of the pulleys contacts the bottom of the floating seat. There are two pulleys, and the two pulleys are located on both sides of the floating seat.

[0017] Compared with the prior art, the present invention has at least one of the following features:

[0018] 1. The mold uses a combination of floating seat and elastic telescopic mechanism to enable the support plate to automatically adjust its height according to the shape of the workpiece during the mold closing process, thereby adapting to the processing requirements of workpieces of different thicknesses and reducing jamming caused by workpiece springback.

[0019] 2. The mold uses airflow channels and guide vanes to inject airflow into the bottom of the workpiece during mold parting. The impact force of the airflow separates the workpiece from the support plate, preventing the workpiece from sticking to the mold surface due to excessive adhesion and improving demolding efficiency.

[0020] 3. The mold, through the design of the auxiliary separation mechanism, uses the linkage action of the swing arm and the drive rod to apply additional separation force to the workpiece during the mold parting process, further enhancing the demolding effect, and is especially suitable for workpieces with complex shapes or large springback.

[0021] 4. The mold is designed with guide grooves and guide blocks to ensure that the pressure block remains stable during the up and down movement, avoiding the decrease in processing accuracy caused by deviation. At the same time, the rolling of the balls reduces frictional resistance and extends the service life of the mold.

[0022] 5. The mold's design, through the cooperation of positioning pins and positioning holes, ensures a smooth and reliable sliding process of the support plate on the floating seat, avoiding processing errors caused by the offset of the support plate, and improving the overall stability of the mold. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0024] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0025] Figure 2 This is a partial cross-sectional view of the floating seat and the support plate of this utility model.

[0026] Figure 3 This is a schematic diagram of the auxiliary separation mechanism of this utility model.

[0027] Figure 4 This is a schematic diagram of the bottom structure of the pressing block of this utility model.

[0028] Figure 5 This is a schematic diagram of the sliding connection between the floating seat and the lower template of this utility model.

[0029] The attached figures are labeled as follows:

[0030] 1. Upper template; 2. Lower template; 3. Floating seat; 4. Bearing plate; 5. Elastic telescopic mechanism; 6. Arc-shaped protrusion; 7. Airflow channel; 8. Pressure block; 9. Groove; 10. Auxiliary separation mechanism; 11. Swing arm; 12. Drive rod; 13. Guide vane; 14. Slide rail; 15. Adjusting bolt; 16. Positioning hole; 17. Positioning column; 18. Support plate; 19. Pulley. Detailed Implementation

[0031] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0032] This utility model provides a bending die for mechanical parts that prevents jamming and easy disengagement. The specific implementation method is described in conjunction with the attached... Figure 1 To be continued Figure 5 A detailed description is provided below. The mold includes an upper template 1, a lower template 2, a floating seat 3, a support plate 4, an elastic telescopic mechanism 5, an airflow channel 7, a pressure block 8, an auxiliary separation mechanism 10, and other related components. The specific structure, positional relationship, and connection method of each component are described below.

[0033] like Figure 1As shown, the upper template 1 and the lower template 2 slide relative to each other via a guide assembly. While not separately labeled in the attached diagram, the guide assembly ensures precise alignment of the upper template 1 and the lower template 2 during mold closing and opening. A floating seat 3 is installed in the middle of the lower template 2, and the top of the floating seat 3 is connected to the support plate 4 via an elastic telescopic mechanism 5. The specific structure of the elastic telescopic mechanism 5 is as follows... Figure 2 As shown, the system includes a sleeve, a piston rod, and a return spring. The bottom of the sleeve is fixed to the top surface of the floating seat 3. One end of the piston rod is inserted into the sleeve and slides within it. The return spring is sleeved on the outer circumference of the piston rod, with one end fixedly connected to the inner top wall of the sleeve and the other end fixedly connected to the top of the piston rod. The other end of the piston rod is fixedly connected to the bottom surface of the support plate 4. This design allows the support plate 4 to automatically adjust its height according to the thickness of the workpiece during mold closing, thus adapting to the processing requirements of workpieces with different thicknesses.

[0034] The top surface of the support plate 4 has multiple arc-shaped protrusions 6, which are evenly distributed along the length of the support plate 4 to support the workpiece and provide necessary contact points during bending. The floating seat 3 has an airflow channel 7 penetrating its sidewalls. One end of the airflow channel 7 connects to an external air source, and the other end extends to the bottom surface of the support plate 4, corresponding to the arc-shaped protrusions 6 on its top surface. A guide vane 13 is provided at the outlet of the airflow channel 7. The guide vane 13 is arranged at an angle towards the outside of the support plate 4. The number of guide vanes 13 is the same as the number of arc-shaped protrusions 6, and they correspond one-to-one. This design ensures that during mold parting, the external air source injects airflow through the airflow channel 7, and the airflow, guided by the guide vane 13, impacts the bottom of the workpiece, thereby separating the workpiece from the support plate 4.

[0035] A pressure block 8 is installed at the bottom of the upper template 1. Multiple grooves 9 are formed on the bottom surface of the pressure block 8. The positions of the grooves 9 correspond one-to-one with the arc-shaped protrusions 6 on the support plate 4. Figure 4 As shown. Auxiliary separation mechanisms 10 are respectively provided on both sides of the pressing block 8. The specific structure of the auxiliary separation mechanism 10 is as follows: Figure 3 As shown, the mechanism includes a swing arm 11 and a drive rod 12. One end of the swing arm 11 is hinged to the upper template 1, and the other end is hinged to one end of the drive rod 12. The other end of the drive rod 12 passes through the upper template 1 and is connected to an external drive device. The auxiliary separation mechanism 10 also includes a limiting block, which is fixed to the side of the upper template 1. The bottom of the limiting block has an arc-shaped groove, and the middle of the swing arm 11 has a protrusion that matches the arc-shaped groove. The protrusion is embedded in the arc-shaped groove and slides in cooperation with it. The swing range of the swing arm 11 is limited by the curvature of the arc-shaped groove. This design allows the external drive device to drive the swing arm 11 to swing through the drive rod 12 during the mold separation process, thereby applying additional separation force to the workpiece and further enhancing the demolding effect.

[0036] The bottom of the floating seat 3 is slidably connected to the lower template 2 via a slide rail 14. Stops are provided at both ends of the slide rail 14 to prevent the floating seat 3 from detaching from the slide rail 14 during sliding. Adjusting bolts 15 are symmetrically installed on both sides of the floating seat 3. One end of each adjusting bolt 15 passes through the floating seat 3 and is threadedly connected to the lower template 2, used to adjust the horizontal position of the floating seat 3. Figure 5 As shown. This design ensures that the floating seat 3 can be finely adjusted according to actual processing requirements, thereby improving the applicability of the mold.

[0037] The pressure block 8 has symmetrical guide grooves on both sides, and guide blocks are slidably installed inside the guide grooves. The bottom of the guide blocks is fixedly connected to the upper template 1, and the top of the guide blocks is equipped with ball bearings that are embedded in the top of the guide grooves and roll in cooperation with them. This design ensures that the pressure block 8 remains stable during up-and-down movement, while reducing frictional resistance and extending the service life of the mold. A drive motor is installed on the top of the upper template 1, and the output shaft of the drive motor is connected to the drive rod 12 via a coupling. A shock-absorbing pad is provided at the bottom of the drive motor, and the bottom of the shock-absorbing pad is fixedly connected to the upper template 1 to reduce the impact of vibrations generated by the drive motor during operation on the mold.

[0038] The top of the floating seat 3 has multiple positioning holes 16, which are evenly distributed along the length of the floating seat 3. The bottom of the support plate 4 has positioning pins 17 corresponding to the positioning holes 16. The positioning pins 17 are inserted into the positioning holes 16 and slide in cooperation with them. This design ensures that the sliding process of the support plate 4 on the floating seat 3 is smooth and reliable, avoiding processing errors caused by the offset of the support plate 4. Support plates 18 are symmetrically installed on both sides of the lower template 2. The top of the support plate 18 has pulleys 19, and the outer periphery of the pulleys 19 contacts the bottom of the floating seat 3. There are two pulleys 19, and the two pulleys 19 are located on both sides of the floating seat 3. This design reduces the frictional resistance of the floating seat 3 during the sliding process and improves the smoothness of the sliding.

[0039] In actual use, the workpiece to be processed is first placed on the top surface of the support plate 4, and the arc-shaped protrusion 6 provides initial support for the workpiece. Then, the upper template 1 moves downwards, and the bottom surface of the pressure block 8 contacts the workpiece. The grooves 9 correspond one-to-one with the arc-shaped protrusions 6, ensuring uniform force on the workpiece during bending. As the upper template 1 continues to press down, the floating seat 3 automatically adjusts its height through the elastic telescopic mechanism 5 to adapt to changes in the workpiece's thickness. After bending is complete, the upper template 1 moves upwards. At this time, an external air source injects airflow through the airflow channel 7. The airflow is guided by the guide plate 13 and impacts the bottom of the workpiece, separating it from the support plate 4. Simultaneously, the auxiliary separation mechanism 10 applies additional separation force to the workpiece through the linkage of the swing arm 11 and the drive rod 12, further enhancing the demolding effect. Throughout the process, the cooperation of the guide groove and guide block ensures the stability of the pressure block 8's movement, the cooperation of the positioning pin 17 and positioning hole 16 ensures the smooth sliding of the support plate 4, and the design of the pulley 19 reduces the sliding resistance of the floating seat 3.

[0040] To enable those skilled in the art to fully understand and implement this utility model, the following supplementary explanation of the specific implementation principle of this utility model is provided in conjunction with a specific application scenario.

[0041] In actual operation, the workpiece to be processed is first placed on the top surface of the support plate 4, where the arc-shaped protrusion 6 provides initial support. Then, the upper template 1 moves downwards along the guide assembly, and the bottom surface of the pressure block 8 gradually contacts the workpiece, with its groove 9 corresponding one-to-one with the arc-shaped protrusion 6 on the support plate 4. This design ensures that the workpiece is subjected to uniform force during bending, avoiding deformation or damage due to localized stress concentration. As the upper template 1 continues to press down, the floating seat 3 automatically adjusts its height through the elastic telescopic mechanism 5 to adapt to changes in the actual thickness of the workpiece. Specifically, the piston rod in the elastic telescopic mechanism 5 slides within the sleeve, and the return spring compresses or extends accordingly, thereby achieving the height adjustment function of the support plate 4 and ensuring that the mold can adapt to the processing requirements of workpieces of different thicknesses.

[0042] After bending is completed, the upper template 1 begins to move upward. At this time, the external air source is activated and airflow is injected into the airflow channel 7. The airflow in the airflow channel 7 is guided by the guide vane 13 and ejected from the position corresponding to the arc-shaped protrusion 6, directly impacting the bottom of the workpiece. Because the guide vane 13 is arranged at an angle and faces the outside of the support plate 4, the airflow can act on the workpiece at a certain angle and force, thereby effectively weakening the adhesion between the workpiece and the support plate 4, and prompting the workpiece to quickly detach from the surface of the support plate 4. This design significantly improves demolding efficiency, and is especially suitable for complex-shaped workpieces with large adhesion forces.

[0043] Simultaneously, the auxiliary separation mechanism 10 begins operation. The external drive unit drives the swing arm 11 to swing via the drive rod 12. The protrusion of the swing arm 11 slides within the arc-shaped groove of the limiting block, and its swing range is strictly limited by the curvature of the arc-shaped groove. The swinging motion of the swing arm 11 applies additional separation force to the workpiece, further enhancing the demolding effect. This linkage design not only improves the reliability of demolding but also reduces the need for manual intervention, making it particularly suitable for continuous automated production scenarios.

[0044] Throughout the mold's operation, the cooperation between the guide groove and the guide block ensures the stability of the pressure block 8's movement. The ball bearings at the top of the guide block are embedded in the guide groove, rolling in conjunction with it, reducing frictional resistance and extending the mold's service life. Furthermore, the sliding fit design between the positioning pin 17 and the positioning hole 16 ensures a smooth and reliable sliding process of the support plate 4 on the floating seat 3, avoiding machining errors caused by the offset of the support plate 4. Meanwhile, the pulleys 19 on both sides of the lower mold plate 2, through contact with the bottom of the floating seat 3, significantly reduce the frictional resistance of the floating seat 3 during sliding, further improving the overall smoothness of the mold's operation.

[0045] Through the design of the above steps and principles, this invention achieves the goal of quickly and smoothly removing the workpiece from the mold after bending, solving the problems of workpiece jamming and difficult demolding in existing technologies. At the same time, the mold's structural design takes into account both stability and durability, providing strong support for efficient and intelligent modern manufacturing.

[0046] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A bending die for mechanical parts that prevents jamming and detachment, comprising an upper template (1) and a lower template (2), characterized in that: A guide component is provided between the upper template (1) and the lower template (2); A floating seat (3) is installed in the middle of the lower template (2), and a bearing plate (4) is connected to the top of the floating seat (3) through an elastic telescopic mechanism (5). The top surface of the bearing plate (4) is provided with a plurality of arc-shaped protrusions (6), which are evenly distributed along the length direction of the bearing plate (4); The floating seat (3) has an airflow channel (7) that runs through its side wall. One end of the airflow channel (7) is connected to an external air source, and the other end extends to the bottom surface of the bearing plate (4) and is correspondingly set with the arc-shaped protrusion (6). The bottom of the upper template (1) is equipped with a pressure block (8), and the bottom surface of the pressure block (8) is provided with multiple grooves (9). The position of the grooves (9) corresponds one-to-one with the arc protrusions (6) on the bearing plate (4). The pressure block (8) is provided with auxiliary separation mechanisms (10) on both sides. The auxiliary separation mechanism (10) includes a swing arm (11) and a drive rod (12). One end of the swing arm (11) is hinged to the upper template (1), and the other end is hinged to one end of the drive rod (12). The other end of the drive rod (12) passes through the upper template (1) and is connected to an external drive device.

2. The bending die for preventing jamming and detachment of mechanical parts according to claim 1, characterized in that, The bottom of the floating seat (3) is slidably connected to the lower template (2) via a slide rail (14), and the two ends of the slide rail (14) are provided with blocks; Adjusting bolts (15) are symmetrically installed on both sides of the floating seat (3). One end of the adjusting bolt (15) passes through the floating seat (3) and is threadedly connected to the lower template (2).

3. The anti-jamming and non-detachment mechanical part bending die according to claim 1, characterized in that, The elastic telescopic mechanism (5) includes a sleeve, a piston rod, and a return spring; The bottom of the sleeve is fixed to the top surface of the floating seat (3). One end of the piston rod is inserted into the sleeve and slides in cooperation with the sleeve. The return spring is sleeved on the outer circumference of the piston rod. One end of the return spring is fixedly connected to the top inner wall of the sleeve, and the other end is fixedly connected to the top of the piston rod. The other end of the piston rod is fixedly connected to the bottom surface of the bearing plate (4).

4. The anti-jamming and easy-to-disengage mechanical part bending die according to claim 1, characterized in that, The airflow channel (7) is provided with a guide vane (13) at its outlet. The guide vane (13) is arranged at an angle and the angle of inclination is towards the outside of the support plate (4). The number of the guide vanes (13) is the same as the number of the arc-shaped protrusions (6), and they correspond one-to-one with the arc-shaped protrusions (6).

5. A bending die for preventing jamming and detachment of mechanical parts according to claim 1, characterized in that, The auxiliary separation mechanism (10) also includes a limiting block, which is fixed to the side of the upper template (1), and the bottom of the limiting block is provided with an arc groove. The middle part of the swing arm (11) is provided with a protrusion that matches the arc groove. The protrusion is embedded in the arc groove and slides in cooperation with the arc groove.

6. A bending die for preventing jamming and detachment of mechanical parts according to claim 1, characterized in that, The outer periphery of the drive rod (12) is provided with a buffer sleeve, and the two ends of the buffer sleeve are fixedly connected to the outer wall of the drive rod (12) and the inner wall of the upper template (1), respectively. The buffer sleeve is equipped with a buffer spring inside. One end of the buffer spring is fixedly connected to the outer wall of the drive rod (12), and the other end is fixedly connected to the inner wall of the buffer sleeve.

7. A bending die for preventing jamming and detachment of mechanical parts according to claim 1, characterized in that, The pressure block (8) has symmetrical guide grooves on both sides, and a guide block is slidably installed inside the guide groove. The bottom of the guide block is fixedly connected to the upper template (1). The top of the guide block is provided with a ball bearing, which is embedded in the top of the guide groove and rolls in cooperation with the guide groove.

8. A bending die for preventing jamming and detachment of mechanical parts according to claim 1, characterized in that, The top of the floating seat (3) is provided with a plurality of positioning holes (16), which are evenly distributed along the length of the floating seat (3); The bottom of the support plate (4) is provided with a positioning post (17) corresponding to the positioning hole (16). The positioning post (17) is inserted into the positioning hole (16) and slides in cooperation with the positioning hole (16).

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