Demolding device for punch forming

Abstract

The utility model relates to the technical field of stamping equipment, in particular to a stamping forming demolding device which comprises a base and a jacking mechanism. A lower mold is arranged on the base, and a cavity is formed in the lower mold; the jacking mechanism comprises a top plate arranged in the lower mold in a sliding mode, a lifting column arranged on the top plate, a first wedge body arranged on the lifting column and located in the cavity, an air cylinder arranged in the cavity, a second wedge body in driving connection with the air cylinder, a fixing rod vertically arranged in the lower mold and a stabilizing frame arranged on the first wedge body. The two ends of the first spring are arranged on the stabilizing frame and the lower die respectively, the lifting column penetrates through and is slidably connected to the lower die, the first wedge body is slidably connected with the second wedge body, the stabilizing frame is slidably arranged on the fixing rod, and the fixing rod is sleeved with the first spring. According to the utility model, a workpiece can be stably separated from the lower die by the top plate, the influence of vibration and noise on the die and the working environment can be avoided, and the practicability of the device is improved.

Description

Technical Field

[0001] This utility model relates to the field of stamping equipment technology, and in particular to a demolding device for stamping. Background Technology

[0002] Hydraulic car stiffeners are an important component of hydraulic cars, typically used to enhance the strength and stability of the car body structure. The production process of hydraulic car stiffeners includes a stamping process. During stamping, the upper die moves downwards with the assistance of a hydraulic press, shaping the blank between the upper and lower dies. Subsequently, the upper die is controlled to move upwards, leaving the shaped part inside the lower die.

[0003] Chinese Patent No. CN214768489U discloses an ejection device for demolding stamped parts, including a lower die cover and an upper die cover mounted on the upper surface of the lower die cover. The upper surface of the lower die cover has a die groove, both sides of which have limit grooves, and the bottom of the die groove has a support cavity. A support ring is fixedly installed at the bottom of the support cavity, and multiple telescopic rods are fixedly installed inside the support ring at the bottom of the support cavity. A top plate is fixedly installed at the top of each of the multiple telescopic rods. A fixing groove is fixedly installed at the center of the lower surface of the top plate. A stamping block is fixedly installed at the center of the lower surface of the upper die cover, and pins are fixedly installed on both sides of the stamping block on the lower surface of the upper die cover. Limit blocks are fixedly installed on both sides of the stamping block. The support ring and telescopic rods support the top plate, so that the top plate remains stable when the upper and lower die covers are closed during stamping, thereby improving the yield of qualified stamped parts.

[0004] However, the above technical solution has the following shortcomings: when the device drives the threaded rod to rotate by the motor, it will generate obvious vibration and noise, which may not only affect the straightness of the top plate rising, thus affecting the demolding quality, but also affect the working environment and the comfort of the operators. Utility Model Content

[0005] The purpose of this invention is to address the problems existing in the background technology by proposing a stamping demolding device that can stably release the workpiece from the lower mold by the top plate, while also avoiding the impact of vibration and noise on the mold and working environment, thereby improving the practicality of the device.

[0006] The present invention provides a die-off device for stamping, comprising a base and a lifting mechanism; a lower die is provided on the base, and the lower die has an internal cavity; the lifting mechanism includes a top plate slidably disposed inside the lower die, a lifting column disposed on the top plate, a first wedge disposed on the lifting column and located inside the cavity, a cylinder disposed inside the cavity, a second wedge driven and connected to the cylinder, a fixed rod vertically disposed inside the lower die, a stabilizing frame disposed on the first wedge, and a first spring disposed at both ends on the stabilizing frame and the lower die respectively; the lifting column passes through and is slidably connected to the lower die; the first wedge and the second wedge are slidably connected; the stabilizing frame is slidably disposed on the fixed rod; and the first spring is sleeved on the fixed rod.

[0007] Preferably, the second wedge is provided with two symmetrically distributed sliders, and the cavity is provided with two limiting seats, each with a guide groove for the sliders to slide horizontally.

[0008] Preferably, a mounting base is provided above the lower mold, an upper mold is provided on the mounting base, and two supports are provided on the base.

[0009] Preferably, the support is provided with two vertically distributed guide rods, and the mounting base is provided with two connecting blocks, which are slidably mounted on the guide rods.

[0010] Preferably, a second spring is sleeved on the guide rod, with the two ends of the second spring respectively disposed on the support and the connecting block.

[0011] Preferably, the mounting base is equipped with a vertically movable hydraulic rod.

[0012] Preferably, the lower mold is provided with an anti-deviation component, which includes four fixed cylinders disposed inside the lower mold, a third spring disposed inside the fixed cylinders, a telescopic rod disposed on the third springs and slidably connected to the fixed cylinders, and a warning plate disposed on the telescopic rods.

[0013] Preferably, the warning panel is provided with an elastic pad.

[0014] Compared with the prior art, the present invention has the following beneficial technical effects:

[0015] 1. This utility model, through the setting of slider, guide groove, stabilizer and fixing rod, can guide the movement of the first wedge and the second wedge, ensuring that the mating surfaces of the first wedge and the second wedge will not be misaligned, ensuring that the top plate can move stably in a straight line, ensuring the demolding quality and service life of the mechanism, and at the same time avoiding the impact of vibration and noise on the working environment and personnel during demolding.

[0016] 2. This utility model can provide an early warning of the position of the upper mold through the anti-offset component. When the upper mold is offset after multiple uses, it can be detected and repaired in time to ensure the quality of stamping. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the internal structure of the lower mold of this utility model;

[0019] Figure 3 This is a breakdown diagram of the lifting mechanism of this utility model;

[0020] Figure 4 This is a structural cross-sectional view of an embodiment of the present utility model.

[0021] Reference numerals: 1. Base; 2. Lower mold; 3. Top plate; 4. Lifting column; 5. First wedge; 6. Cylinder; 7. Second wedge; 8. Slider; 9. Limiting seat; 10. Guide groove; 11. Stabilizing frame; 12. Fixing rod; 13. First spring; 14. Cavity; 15. Mounting seat; 16. Upper mold; 17. Support; 18. Guide rod; 19. Connecting block; 20. Second spring; 21. Hydraulic rod; 22. Fixing cylinder; 23. Third spring; 24. Telescopic rod; 25. Warning plate; 26. Elastic pad. Detailed Implementation

[0022] Example 1

[0023] like Figures 1-4 As shown in the figure, the stamping demolding device proposed in this embodiment includes a base 1 and a lifting mechanism; a lower mold 2 is provided on the base 1, and the interior of the lower mold 2 has a cavity 14.

[0024] The lifting mechanism includes a top plate 3 slidably disposed inside the lower mold 2, a lifting column 4 disposed on the top plate 3, a first wedge 5 disposed on the lifting column 4 and located inside the cavity 14, a cylinder 6 disposed inside the cavity 14, a second wedge 7 drivenly connected to the cylinder 6, a fixed rod 12 vertically disposed inside the lower mold 2, a stabilizing frame 11 disposed on the first wedge 5, and a first spring 13 disposed at both ends on the stabilizing frame 11 and the lower mold 2 respectively. The lifting column 4 passes through and is slidably connected to the lower mold 2. The first wedge 5 and the second wedge 7 are slidably connected. The stabilizing frame 11 is slidably disposed on the fixed rod 12. The first spring 13 is sleeved on the fixed rod 12.

[0025] The second wedge 7 is provided with two symmetrically distributed sliders 8, and the cavity 14 is provided with two limiting seats 9. The limiting seats 9 are provided with guide grooves 10 for the sliders 8 to slide horizontally.

[0026] In this embodiment, after the hydraulic rib plate completes the stamping and mold closing, the cylinder 6 is activated to drive the second wedge 7 to move. The inclined surfaces of the second wedge 7 and the first wedge 5 are pressed against each other and slide relative to each other. The first wedge 5 drives the lifting column 4 to move upward, and the lifting column 4 drives the top plate 3 to slide upward, thereby demolding the rib plate located in the processing groove of the lower mold 2. The movement of the second wedge 7 is guided by the slider 8 and the guide groove 10 on the limit seat 9. The stabilizing frame 11 and the fixing rod 12 guide the movement of the first wedge 5, ensuring that the contact surfaces of the first wedge 5 and the second wedge 7 will not be misaligned, ensuring that the top plate 3 can slide stably. The first spring 13 can provide a certain buffering effect on the first wedge 5, allowing the first wedge 5 to rise steadily, ensuring the service life of the mechanism, and avoiding the impact of vibration and noise on the working environment and personnel during the demolding process.

[0027] Example 2

[0028] like Figure 1 and Figure 2 As shown, in this embodiment, a stamping demolding device is proposed. Compared with the first embodiment, in this embodiment, a mounting base 15 is provided above the lower mold 2, an upper mold 16 is provided on the mounting base 15, two supports 17 are provided on the base 1, two vertically distributed guide rods 18 are provided on the supports 17, two connecting blocks 19 are provided on the mounting base 15, the connecting blocks 19 are slidably disposed on the guide rods 18, a second spring 20 is sleeved on the guide rods 18, the two ends of the second spring 20 are respectively disposed on the supports 17 and the connecting blocks 19, and a vertically moving hydraulic rod 21 is driven on the mounting base 15.

[0029] In this embodiment, the hydraulic rod 21 is connected to the hydraulic drive device to drive the mounting base 15, so that the upper mold 16 and the lower mold 2 can complete the stamping and forming of the hydraulic rib plate. When the mounting base 15 descends along the guide rod 18, it will drive the connecting block 19 to move. This not only plays an auxiliary guiding role in the movement of the upper mold 16, but also the connecting block 19 and the support 17 continuously compress the second spring 20, so that the mold can remain stable during the mold closing process, so that the produced product meets the expected quality and shape, and at the same time improves the fatigue resistance of the mold, thereby extending the service life of the mold.

[0030] Example 3

[0031] like Figure 1 and Figure 4As shown, the demolding device for stamping proposed in this embodiment, compared with the first embodiment, has an anti-deviation component on the lower mold 2. The anti-deviation component includes four fixed cylinders 22 disposed inside the lower mold 2, a third spring 23 disposed inside the fixed cylinder 22, a telescopic rod 24 disposed on the third spring 23 and slidably connected to the fixed cylinder 22, and a warning plate 25 disposed on the telescopic rod 24. An elastic pad 26 is disposed on the warning plate 25.

[0032] In this embodiment, after the mold has undergone multiple stamping processes, the deformation of the material may cause uneven stress on the mold, and the pressure center during the stamping process may not coincide with the geometric center of the mold, which may cause the position of the upper mold 16 to shift. Therefore, when the upper mold 16 is driven to descend and close, if the upper mold 16 shifts, it will contact the warning plate 25 and press down on the warning plate 25. The warning plate 25 compresses the third spring 23 through the telescopic rod 24 to buffer the downward pressure of the warning plate 25. In addition, a pressure sensor (not shown) can be set to work with the warning plate 25. When the warning plate 25 contacts the pressure sensor, the hydraulic rod 21 stops driving so that the upper mold 16 can be inspected. The elastic pad 26 can also prevent wear on the mold surface.

[0033] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited thereto. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention.

Claims

1. A die-casting device for stamping, characterized in that, include: A base (1) is provided with a lower mold (2) on it, and the interior of the lower mold (2) has a cavity (14); The lifting mechanism includes a top plate (3) slidably disposed inside the lower mold (2), a lifting column (4) disposed on the top plate (3), a first wedge (5) disposed on the lifting column (4) and located inside the cavity (14), a cylinder (6) disposed inside the cavity (14), a second wedge (7) drivenly connected to the cylinder (6), a fixed rod (12) vertically disposed inside the lower mold (2), a stabilizing frame (11) disposed on the first wedge (5), and a first spring (13) disposed at both ends on the stabilizing frame (11) and the lower mold (2), respectively. The lifting column (4) passes through and is slidably connected to the lower mold (2). The first wedge (5) and the second wedge (7) are slidably connected. The stabilizing frame (11) is slidably disposed on the fixed rod (12), and the first spring (13) is sleeved on the fixed rod (12).

2. The die-off device for stamping according to claim 1, characterized in that, The second wedge (7) is provided with two symmetrically distributed sliders (8), and the cavity (14) is provided with two limiting seats (9), and the limiting seats (9) are provided with guide grooves (10) for the sliders (8) to slide horizontally.

3. The die-off device for stamping according to claim 1, characterized in that, An mounting base (15) is provided above the lower mold (2), an upper mold (16) is provided on the mounting base (15), and two supports (17) are provided on the base (1).

4. The die-off device for stamping according to claim 3, characterized in that, The support (17) is provided with two vertically distributed guide rods (18), and the mounting base (15) is provided with two connecting blocks (19), which are slidably mounted on the guide rods (18).

5. A die-off device for stamping according to claim 4, characterized in that, A second spring (20) is sleeved on the guide rod (18), and the two ends of the second spring (20) are respectively set on the support (17) and the connecting block (19).

6. A die-off device for stamping according to claim 3, characterized in that, The mounting base (15) is equipped with a vertically movable hydraulic rod (21).

7. A die-off device for stamping according to claim 1, characterized in that, The lower mold (2) is provided with an anti-deviation component, which includes four fixed cylinders (22) disposed inside the lower mold (2), a third spring (23) disposed inside the fixed cylinder (22), a telescopic rod (24) disposed on the third spring (23) and slidably connected to the fixed cylinder (22), and a warning plate (25) disposed on the telescopic rod (24).

8. A die-off device for stamping according to claim 7, characterized in that, An elastic pad (26) is provided on the warning panel (25).

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