A blanking device for a punch press

Abstract

This application discloses a blanking device for a stamping die, comprising a shock-absorbing seat, a drive assembly, and a lifting rod. One end of the lifting rod is hinged to a fixed die, and the drive assembly is disposed on one side of the lifting rod and fixedly installed on a moving die. The drive assembly is adapted to drive the lifting rod to rotate and blank under the action of mold opening of the moving die, and the lifting rod is adapted to reset under the action of gravity. The shock-absorbing seat is disposed at the free end of the lifting rod at its initial position. When the lifting rod resets, the lifting rod and the shock-absorbing seat cooperate to reduce vibration through an energy-dissipating structure. The beneficial effects of this application are: the drive mechanism drives the lifting rod to rotate for automatic blanking during mold opening; the avoidance structure allows the drive rod to bypass the lifting rod and reset through the reset assembly during mold closing, making the blanking process consistent with the mold opening and closing rhythm; the cooperation of the shock-absorbing seat and the energy-dissipating structure on the lifting rod reduces vibration and noise when the lifting rod relies on self-realignment.

Description

Technical Field

[0001] This application relates to the field of stamping dies, and in particular to a blanking device for stamping dies. Background Technology

[0002] The blanking device of a stamping die is a key component of a stamping production line, mainly used to safely, stably, and efficiently remove the formed workpiece from the die's working area. Its reliability and smooth operation directly determine the cycle time efficiency of stamping production, product surface quality, and the continuity of automated production.

[0003] In traditional stamping production, due to the slow production pace and low automation requirements, workpieces were typically transferred using gravity sliding or manual unloading. This method was suitable for simple processes and small production batches. However, with the popularization of multi-station high-speed stamping technology and the increasing demands for production efficiency and manual operation safety, traditional blanking methods have revealed many drawbacks: Firstly, the reliance on gravity or manual operation leads to unstable operating rhythms, easily becoming a bottleneck for overall line speed-up, and is prone to workpiece surface damage or deformation due to impacts, resulting in significant noise and vibration; secondly, in high-speed continuous stamping, poor blanking can easily cause workpieces to accumulate in the die, causing die jamming, damage, or even machine shutdown, seriously affecting equipment uptime and production stability. Based on these problems, a new solution is urgently needed. Utility Model Content

[0004] The purpose of this application is to provide a blanking device for stamping dies that can solve at least one of the defects in the above-mentioned background art.

[0005] To achieve at least one of the above objectives, this application provides a blanking device for a stamping die, comprising a shock-absorbing seat, a drive assembly, and a lifting rod; one end of the lifting rod is hinged to a fixed die, the drive assembly is disposed on one side of the lifting rod and fixedly installed on a moving die; the drive assembly is adapted to drive the lifting rod to rotate and blank under the action of the moving die opening, and the lifting rod is adapted to reset under the action of gravity; the shock-absorbing seat is disposed at the free end of the lifting rod at its initial position, and when the lifting rod resets, the lifting rod and the shock-absorbing seat cooperate to absorb vibration through an energy-dissipating structure.

[0006] Preferably, the energy-consuming structure includes a first energy-consuming component, a second energy-consuming component, and an energy-consuming groove; the first energy-consuming component is disposed on the side wall of the lifting rod; the energy-consuming groove is disposed on the inner wall of the shock-absorbing seat and cooperates with the first energy-consuming component to limit and dampen the lifting rod; the second energy-consuming component is disposed on the inner bottom surface of the shock-absorbing seat to buffer and dampen the lifting rod.

[0007] Preferably, the first energy-consuming component includes a first elastic element and a slider; the side wall of the lifting rod is provided with an installation groove, the first elastic element is disposed in the installation groove, the slider is radially slidably installed in the installation groove through the first elastic element, and the slider extends or retracts in the installation groove under the squeezing action of the shock-absorbing seat.

[0008] Preferably, the cross-sectional shape of the slider is trapezoidal, the first elastic element connects to the trapezoidal base of the slider, and the cross-sectional shape of the energy dissipation groove is trapezoidal to match the slider.

[0009] Preferably, the shock absorber seat is provided with a first wedge-shaped surface at the entrance of the slider, and the angle of the first wedge-shaped surface is the same as that of the trapezoidal hypotenuse of the slider.

[0010] Preferably, the trapezoidal base angle of the slider is in the range of 15-45°.

[0011] Preferably, the second energy-consuming component includes a second elastic element and a shock-absorbing plate; the shock-absorbing plate is installed on the inner bottom surface of the shock-absorbing seat through the second elastic element.

[0012] Preferably, the driving assembly includes a driving rod and a reset assembly; the reset assembly is fixedly connected to the moving mold; one end of the driving rod is rotatably connected to the reset assembly, and the other end of the driving rod is provided with a driving block; when the mold is opened, the driving block abuts against the lifting rod and drives the lifting rod to rotate; when the mold is closed, the driving block bypasses the lifting rod through an avoidance structure and is reset through the reset assembly.

[0013] Preferably, the avoidance structure includes a second wedge-shaped surface disposed on the drive block and a third wedge-shaped surface disposed on the drive rod; during mold closing, the drive rod rotates around the rotation axis and bypasses the lifting rod through the cooperation of the second wedge-shaped surface and the third wedge-shaped surface.

[0014] Preferably, the reset assembly is equipped with a torsion spring to reset the drive rod.

[0015] Compared with the prior art, the beneficial effects of this application are as follows:

[0016] In the technical solution of this application, the drive mechanism drives the lifting rod to rotate for automatic material dropping when the mold is opened. The avoidance structure allows the drive rod to bypass the lifting rod and be reset by the reset component when the mold is closed, so that the lifting and dropping process is consistent with the opening and closing rhythm of the mold. The vibration damping seat and the energy dissipation structure on the lifting rod cooperate to reduce vibration and noise when the lifting rod relies on self-realignment. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0018] Figure 2 This is a schematic diagram showing the lifting rod of this utility model positioned inside the shock-absorbing seat;

[0019] Figure 3 This is a schematic diagram of the lifting rod of this utility model at its maximum rotation angle;

[0020] Figure 4 This is a schematic diagram of the drive component reset according to this utility model;

[0021] Figure 5 This is a schematic diagram showing the cooperation between the second wedge-shaped surface and the third wedge-shaped surface of this utility model.

[0022] In the figure: shock absorber 1, second energy dissipation component 110, second elastic component 111, shock absorber plate 112, energy dissipation groove 120, first wedge surface 130, drive assembly 2, drive rod 210, drive block 211, second wedge surface 212, reset assembly 220, lifting rod 3, first energy dissipation component 310, first elastic component 311, slider 312, mounting groove 313, third wedge surface 320. Detailed Implementation

[0023] The present application will be further described below with reference to specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0024] In the description of this application, it should be noted that the directional terms such as "center", "lateral", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", and "counterclockwise" indicate the orientation and positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application 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. They should not be construed as limiting the specific protection scope of this application.

[0025] It should be noted that the terms "first," "second," etc., in the specification and claims of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence.

[0026] The terms “comprising” and “having”, and any variations thereof, in the specification and claims of this application are intended to cover non-exclusive inclusion, for example, a process, method, system, product, or device that includes a series of steps or units is not necessarily limited to those steps or units that are explicitly listed, but may include other steps or units that are not explicitly listed or that are inherent to such process, method, product, or device.

[0027] A preferred embodiment of this application, such as Figure 1 and Figure 2 As shown, a blanking device for a stamping die includes a shock-absorbing seat 1, a drive assembly 2, and a lifting rod 3. One end of the lifting rod 3 is hinged to a fixed mold (not shown), and the drive assembly 2 is disposed on one side of the lifting rod 3 and fixedly installed on a moving mold (not shown). The drive assembly 2 is adapted to drive the lifting rod 3 to rotate and blank under the action of mold opening of the moving mold, and the lifting rod 3 is adapted to reset under the action of gravity. The shock-absorbing seat 1 is disposed at the free end of the lifting rod 3 at its initial position. When the lifting rod 3 resets, the lifting rod 3 and the shock-absorbing seat 1 cooperate to absorb shock through an energy-dissipating structure.

[0028] It should be noted that one end of the lifting rod 3 is hinged to the fixed mold and can be indirectly connected to the fixed mold via a rotating connecting seat. The lifting rod 3 can rotate around the hinged end, and its initial position is usually horizontal. The drive assembly 2 is mounted on the moving mold. When the moving mold performs mold closing and opening movements, the drive assembly 2 will move in the same direction as the moving mold. At the same time, the drive assembly 2 is positioned on one side of the lifting rod 3. When the drive assembly 2 moves with the mold opening, it will drive the lifting rod 3 to lift it. When the lifting rod 3 reaches a certain angle, the finished workpiece on the lifting rod 3 can automatically slide down onto the conveyor belt.

[0029] Understandably, by using the moving mold to drive the drive component 2 to further drive the lifting rod 3 to lift and drop the material, the traditional technology eliminates the need to use more expensive components such as cylinders on the stamping die for material dropping, greatly reducing the cost of using the die. Furthermore, by slowly lifting the lifting rod 3 to drop the material, the angle and distance of each drop are accurately controlled, the operation rhythm is stable, and the machine's running rhythm is not unstable due to manual handling of material dropping.

[0030] It should also be noted that when the drive assembly 2 drives the lifting rod 3 to its highest point, the drive assembly 2 will continue to rise along with the moving mold, while the lifting rod 3 has completed the material dropping process and will reset under gravity. Therefore, when the lifting rod 3 falls to the horizontal position, it is prone to vibration and noise, especially at the hinge position where it will be subjected to a large impact force, easily causing structural fatigue or even breakage. Therefore, a shock-absorbing seat 1 is installed at the free end of the lifting rod 3 at its initial position. The shock-absorbing seat 1 and the lifting rod 3 cooperate through an energy-dissipating structure to convert the kinetic energy generated under gravity into elastic potential energy, frictional heat energy, etc., thus achieving a vibration reduction effect.

[0031] It is also understandable that the shock absorber 1 should simultaneously limit the lifting rod 3 so that it does not rebound when it reaches the initial position. If it is reset under the action of gravity, the lifting rod 3 is prone to rebound, which will greatly increase the danger of the operation. Therefore, the design of the energy dissipation structure should consider dissipating kinetic energy while providing a certain constraint and limit on the lifting rod 3, so that the operation process is safe, quiet and efficient.

[0032] Energy-dissipating structures can achieve energy dissipation and vibration reduction by incorporating energy-dissipating components. Using multiple different energy-dissipating components can further enhance the energy dissipation and vibration reduction effect. A preferred embodiment of this application is as follows: Figure 1 and Figure 2 As shown, the energy-consuming structure includes a first energy-consuming component 310, a second energy-consuming component 110, and an energy-consuming groove 120; the first energy-consuming component 310 is disposed on the side wall of the lifting rod 3; the energy-consuming groove 120 is disposed on the inner wall of the shock-absorbing seat 1 and cooperates with the first energy-consuming component 310 to limit and dampen the lifting rod 3; the second energy-consuming component 110 is disposed on the inner bottom surface of the shock-absorbing seat 1 to buffer and dampen the lifting rod 3.

[0033] It should be understood that the energy-consuming components on the side wall of the lifting rod 3 and the energy-consuming groove 120 on the inner wall of the shock absorber 1 limit and dissipate energy. Energy can be dissipated through conversion of frictional energy or elastic potential energy. When the lifting rod 3 enters the energy-consuming groove 120 from the shock absorber 1, the energy-consuming groove 120 limits the lifting rod 3 by its shape. The lifting rod 3 cannot easily rebound, and the kinetic energy will be lost in the process of breaking through the limit. Thus, the kinetic energy drops significantly, achieving the effect of shock absorption.

[0034] It should also be noted that after the lifting rod 3 enters the shock absorber 1, its bottom will contact the second energy dissipation component 110. Through the buffering and energy dissipation of the second energy dissipation component 110, further shock absorption is achieved. Buffering and energy dissipation can be achieved in various ways, such as elastic element energy dissipation buffering, damping energy dissipation buffering, and airbag energy dissipation buffering. Under the action of gravity, the lifting rod 3 rushes into the shock absorber 1 quickly and will make direct contact with the bottom. The energy is quickly transferred to the bottom. The second energy dissipation component 110 is used for direct buffering and shock absorption, which can effectively decelerate the lifting rod 3. After the energy is dissipated, the second energy dissipation component 110 can return to its original state when the next workpiece processing is carried out, ready for the next energy dissipation process.

[0035] Understandably, the first energy-consuming component 310 and the energy-consuming groove 120 provide energy-absorbing and vibration-damping effects on the lifting rod 3 from the side, while the second energy-consuming component 110 provides energy-absorbing and vibration-damping effects on the lifting rod 3 from the bottom. This simultaneous action from multiple surfaces significantly improves the effectiveness of the vibration damping. Furthermore, if one energy-consuming component is damaged, the other energy-consuming component can still function, giving operators sufficient time to identify the problem and replace the energy-consuming component. The vibration damping effect will not completely disappear due to the damage of the energy-consuming component, preventing the lifting rod 3 from immediately being damaged.

[0036] The first energy-consuming component 310 is located on the side of the lifting rod 3. As the first line of defense for energy consumption, it needs to limit energy consumption and have a reset effect. A preferred embodiment of this application is as follows... Figure 2 and Figure 3 As shown, the first energy-consuming component 310 includes a first elastic element 311 and a slider 312; the side wall of the lifting rod 3 is provided with an installation groove 313, the first elastic element 311 is provided in the installation groove 313, and the slider 312 is radially slidably installed in the installation groove 313 through the first elastic element 311. Under the squeezing action of the shock-absorbing seat 1, the slider 312 extends or retracts in the installation groove 313.

[0037] It should be understood that, under normal conditions without external force, a portion of the slider 312 protrudes from the lifting rod 3. During its entry into the damping seat 1, the slider 312 is compressed by the inner wall of the damping seat 1 and retracts into the mounting groove 313. The first elastic element 311 also retracts accordingly, and part of the kinetic energy of the lifting rod 3 is converted into the elastic potential energy of the first elastic element 311, achieving a damping effect. When the drive mechanism drives the lifting rod 3 to rotate and disengage from the damping seat 1, the first elastic element 311 releases its elastic potential energy and returns to its original position. The slider 312 protrudes from the lifting rod 3 again. When the lifting rod 3 is gravity-reset next time, the first elastic element 311 and the slider 312 again perform energy-dissipating damping.

[0038] It is understandable that the depth of the mounting groove 313 is greater than the thickness of the slider 312, so that when the slider 312 is squeezed by the inner wall of the shock absorber 1, it can completely retract into the mounting groove 313, without affecting the lifting rod 3 to continue to move downward to reach the position of the second energy-consuming component 110 for the second energy-consuming shock absorption.

[0039] The cross-sectional shape of slider 312 affects the effectiveness of the limiting action between slider 312 and energy dissipation groove 120. A preferred embodiment of this application, such as... Figure 2 As shown, the cross-sectional shape of slider 312 is trapezoidal, the first elastic element 311 connects to the trapezoidal base of slider 312, and the cross-sectional shape of energy dissipation groove 120 is a trapezoid that matches slider 312.

[0040] It should be understood that the cross-sectional shape of the slider 312 in this embodiment is preferably trapezoidal, and the cross-sectional shape of the energy dissipation groove 120 is also trapezoidal. When the lifting rod 3 enters the damping seat 1, when the position of the first energy dissipation component 310 enters the position of the energy dissipation groove 120, the slider 312 extends out of the mounting groove 313 under the action of the first elastic component 311. The slider 312 contacts the energy dissipation groove 120 and is limited. Under the condition of huge kinetic energy, the lifting rod 3 will still vibrate slightly up and down in the damping seat 1. The slider 312 and the energy dissipation groove 120 repeatedly rub against each other on the upper and lower wedge surfaces to dissipate energy, achieving a good energy dissipation and vibration reduction effect.

[0041] It is understandable that the inner wall of the shock absorber 1 can be made of wear-resistant material to increase the service life of the shock absorber 1 and reduce maintenance and replacement costs. The cross-sectional shape of the energy dissipation groove 120 should be slightly smaller than the shape of the slider 312 so that the slider 312 can fully dissipate energy through friction within the energy dissipation groove 120.

[0042] It is also understandable that the first elastic element 311 is connected to the center of the trapezoidal bottom surface of the slider 312. If it is not located at the center of the bottom surface of the slider 312, it may cause eccentricity when subjected to pressure, resulting in wear on one side of the slider 312. It may even cause huge eccentric force leading to structural failure. The slider 312 will not be able to retract smoothly into the mounting groove 313, resulting in interruption of the processing and a great safety hazard. Therefore, the position of the first elastic element 311 connected to the bottom surface of the slider 312 should be accurately positioned to the center.

[0043] When slider 312 enters damping seat 1, it should first retract into mounting groove 313 before it can continue to move downwards smoothly. A preferred embodiment of this application is as follows... Figure 1 and Figure 2 As shown, the damping seat 1 is provided with a first wedge-shaped surface 130 at the entrance of the slider 312, and the first wedge-shaped surface 130 has the same angle as the trapezoidal hypotenuse of the slider 312.

[0044] It should be noted that the angle of the first wedge surface 130 is the same as the angle of the trapezoidal inclined side of the slider 312. Therefore, when the lifting rod 3 enters the damping seat 1, the lower inclined side of the trapezoid of the slider 312 contacts the first wedge surface 130, and wedge transmission occurs, converting the vertical motion into the horizontal motion. The first wedge surface 130 squeezes the slider 312 to make it enter the mounting groove 313, and then it can smoothly continue to enter the energy dissipation groove 120 with the lifting rod 3.

[0045] It is understandable that the first wedge surface 130, in addition to guiding the slider 312 into the mounting groove 313, can also play a certain role in energy dissipation. When the slider 312 is squeezed into the mounting groove 313, some frictional energy dissipation and energy conversion of the first elastic element 311 have already occurred. Therefore, wear-resistant materials can also be used on the first wedge surface 130 to reduce the frictional loss of the first wedge surface 130, increase durability and ensure the pushing effect on the slider 312.

[0046] The trapezoidal angle of the cross-section of slider 312 affects its energy dissipation effect and whether it can smoothly enter the damping seat 1. A preferred embodiment of this application, such as... Figure 2 As shown, the trapezoidal base angle of slider 312 ranges from 15° to 45°.

[0047] It should be understood that when the trapezoidal base angle of the slider 312 is too large, the vertical resistance of the wedge surface will be too great, making it difficult for the slider 312 to retract smoothly into the mounting groove 313 and move downward together with the lifting rod 3. In cases where the angle is too large, it may even lead to self-locking, making it completely impossible to proceed. On the other hand, when the base angle is too small, the effect of frictional energy dissipation will be too weak, and the limiting effect will be further weakened, which is not conducive to the damping effect of the shock-absorbing seat 1 on the lifting rod 3. Therefore, in this embodiment, the preferred range of the trapezoidal base angle of the slider 312 is 15-45°.

[0048] The first energy-dissipating component 310 is the first process of energy dissipation and vibration reduction for the lifting rod 3, while the second energy-dissipating component 110 is the second process of energy dissipation and vibration reduction for the lifting rod 3. A preferred embodiment of this application is as follows... Figure 2 As shown, the second energy-consuming component 110 includes a second elastic element 111 and a damping plate 112; the damping plate 112 is installed on the inner bottom surface of the damping seat 1 through the second elastic element 111.

[0049] It should be understood that the damping plate 112 is installed on the upper part of the second elastic element 111, and the lower part of the second elastic element 111 is located on the inner bottom surface of the damping seat 1. The second elastic element 111 can be a mechanical spring, a polyurethane washer, a rubber block, etc. The damping plate 112 directly bears the impact of the lifting rod 3, transferring the load and energy to the lower second elastic element 111.

[0050] A preferred embodiment of this application, such as Figure 1 , Figure 3 and Figure 4 As shown, the reset assembly 220 is fixedly connected to the moving mold; one end of the drive rod 210 is rotatably connected to the reset assembly 220, and the other end of the drive rod 210 is provided with a drive block 211; when the mold is opened, the drive block 211 abuts against the lifting rod 3 and drives the lifting rod 3 to rotate; when the mold is closed, the drive block 211 bypasses the lifting rod 3 through the avoidance structure and is reset through the reset assembly 220.

[0051] It should be noted that the initial position of the drive rod 210 is vertical. During mold opening, the moving mold drives the drive rod 210 to move upward, achieving the desired position. Figure 1 When positioned, the drive block 211 at the lower part of the drive rod 210 hooks onto the lifting rod 3 and drives one end of the lifting rod 3 to lift. The lifting rod 3 then begins to rotate around the hinge end. As the angle between the lifting rod 3 and the horizontal gradually increases, the material dropping process is completed; when the desired position is reached... Figure 3 When in position, the lifting rod 3 disengages from the drive block 211 and begins the gravity reset process. The shock absorber 1 provides energy dissipation and vibration damping for the gravity reset of the lifting rod 3. Then, the next mold closing occurs, as... Figure 4 As shown, when the drive block 211 moves to contact the lifting rod 3, the drive rod 210 rotates to avoid it through the avoidance structure, and then continues to move downward. When the drive block 211 moves to the lower part of the lifting rod 3, the drive rod 210 is reset by the reset component 220.

[0052] It is understandable that by setting up the avoidance structure, the repeated automatic dropping process of the lifting rod 3 can be completed simply by driving the drive rod 210 to move repeatedly during the mold opening and closing process, thereby lifting the lifting rod 3. The avoidance structure can be an electric control mechanism that drives the drive rod 210 to rotate a certain amount during the descent of the drive rod 210, and then resets it through the reset component 220. In this embodiment, the avoidance structure is preferably formed by a wedge-shaped surface that does not require an additional control mechanism.

[0053] Specifically, a torsion spring is installed inside the reset assembly 220 to reset the drive rod 210. One end of the torsion spring is fixed to the housing of the reset assembly 220, and the other end is fixed to the rotating shaft of the drive rod 210. The initial state of the torsion spring corresponds to the vertical position of the drive rod 210. When the drive rod 210 rotates a certain distance through the clearance structure, the torsion spring undergoes elastic deformation and stores elastic potential energy. When the drive block 211 passes around the lifting rod 3, the torsion spring releases the elastic potential energy, causing the drive rod 210 to reset to the vertical position.

[0054] Understandably, torsion springs can be mounted around an axis, which greatly saves space and is very suitable for installation inside small components. In addition, their reset effect is stable and does not rely on external energy. Furthermore, high-quality torsion springs have extremely high fatigue life, which greatly ensures the reset function.

[0055] A preferred embodiment of this application, such as Figure 4 and Figure 5 As shown, the avoidance structure includes a second wedge-shaped surface 212 disposed on the drive block 211 and a third wedge-shaped surface 320 disposed on the drive rod 210; during mold closing, the drive rod 210 rotates around the rotation axis and passes around the lifting rod 3 through the cooperation of the second wedge-shaped surface 212 and the third wedge-shaped surface 320.

[0056] It should be understood that the angles between the second wedge surface 212 and the third wedge surface 320 and the horizontal direction should be different, and the angle between the third wedge surface 320 and the horizontal direction should be smaller than the angle between the second wedge surface 212 and the horizontal direction. If the angles between the second wedge surface 212 and the third wedge surface 320 are the same, then during the downward movement of the drive rod 210, since the lifting rod 3 has been limited by the shock absorber 1, the second wedge surface 212 and the third wedge surface 320 of the drive block 211 and the lifting rod 3 will be tightly pressed together, and no rotational redundancy can be generated. Only when the angle between the third wedge surface 320 and the horizontal direction is smaller than the angle between the second wedge surface 212 and the horizontal direction can the drive block 211 move horizontally beyond the range of the lifting rod 3 and bypass the lifting rod 3 before the two wedge surfaces are at the same angle.

[0057] Understandably, in order to make the avoidance structure more effective and prevent jamming, lubrication treatment can be applied to the second wedge surface 212 and the third wedge surface 320, so that the drive block 211 can pass around the lifting rod 3 more smoothly and reduce interference.

[0058] The basic principles, main features, and advantages of this application have been described above. Those skilled in the art should understand that this application is not limited to the above embodiments. The embodiments and descriptions in the specification are merely the principles of this application. Various changes and modifications can be made to this application without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection claimed by this application is defined by the appended claims and their equivalents.

Claims

1. A blanking device for stamping dies, characterized in that: The device includes a shock absorber, a drive assembly, and a lifting rod. One end of the lifting rod is hinged to a fixed mold. The drive assembly is located on one side of the lifting rod and fixedly installed on a moving mold. The drive assembly is adapted to drive the lifting rod to rotate and drop material under the action of mold opening of the moving mold. The lifting rod is adapted to reset under the action of gravity. The shock absorber is located at the free end of the lifting rod at its initial position. When the lifting rod resets, the lifting rod and the shock absorber cooperate to absorb vibration through an energy-dissipating structure.

2. The blanking device for stamping dies as described in claim 1, characterized in that: The energy-consuming structure includes a first energy-consuming component, a second energy-consuming component, and an energy-consuming groove; the first energy-consuming component is disposed on the side wall of the lifting rod; the energy-consuming groove is disposed on the inner wall of the shock-absorbing seat and cooperates with the first energy-consuming component to limit and dampen the lifting rod; the second energy-consuming component is disposed on the inner bottom surface of the shock-absorbing seat to buffer and dampen the lifting rod.

3. The blanking device for stamping dies as described in claim 2, characterized in that: The first energy-consuming component includes a first elastic element and a slider; the side wall of the lifting rod is provided with an installation groove, the first elastic element is disposed in the installation groove, the slider is radially slidably installed in the installation groove through the first elastic element, and the slider extends or retracts in the installation groove under the squeezing action of the shock-absorbing seat.

4. The blanking device for stamping dies as described in claim 3, characterized in that: The slider has a trapezoidal cross-sectional shape, the first elastic element connects to the trapezoidal base of the slider, and the energy dissipation groove has a trapezoidal cross-sectional shape that matches the slider.

5. The blanking device for stamping dies as described in claim 4, characterized in that: The shock-absorbing seat is provided with a first wedge-shaped surface at the entrance of the slider, and the angle of the first wedge-shaped surface is the same as that of the trapezoidal hypotenuse of the slider.

6. The blanking device for stamping dies as described in claim 4 or 5, characterized in that: The trapezoidal base angle of the slider's cross-section ranges from 15° to 45°.

7. The blanking device for stamping dies as described in claim 2, characterized in that: The second energy-consuming component includes a second elastic element and a shock-absorbing plate; the shock-absorbing plate is installed on the inner bottom surface of the shock-absorbing seat through the second elastic element.

8. The blanking device for stamping dies as described in claim 1, characterized in that: The driving assembly includes a driving rod and a reset assembly; the reset assembly is fixedly connected to the moving mold; one end of the driving rod is rotatably connected to the reset assembly, and the other end of the driving rod is provided with a driving block; when the mold is opened, the driving block abuts against the lifting rod and drives the lifting rod to rotate; when the mold is closed, the driving block bypasses the lifting rod through an avoidance structure and is reset through the reset assembly.

9. The blanking device for stamping dies as described in claim 8, characterized in that: The avoidance structure includes a second wedge-shaped surface disposed on the drive block and a third wedge-shaped surface disposed on the drive rod; during mold closing, the drive rod rotates around the rotation axis and bypasses the lifting rod through the cooperation of the second wedge-shaped surface and the third wedge-shaped surface.

10. The blanking device for stamping dies as described in claim 8, characterized in that: The reset assembly is equipped with a torsion spring to reset the drive rod.

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