Quick release structure of automobile panel stamping die

Abstract

The utility model discloses a quick stripping structure of automobile covering piece stamping die relates to stamping die technical field, including bottom die and stripping unit, bottom die: top surface and bottom surface cooperation installation of top die, the both sides of inside of bottom die are fixed with fixed base, the inside installation of fixed base has main spring, and the bottom of bottom die is connected with the one side of push plate top surface, and the end of push plate is connected with fixed base inside sliding, the bottom surface of bottom die is set up with through -hole, and the side of bottom die is equipped with auxiliary unit, this quick stripping structure of automobile covering piece stamping die realizes quick stripping through the cooperation and air pump auxiliary blowing of main vice spring, reduces work piece adsorption force, and eight groups adjustable stripping rod even force avoids deformation, and the cooperation height sensor and controller accurate control ejection stroke, and screw rod adjusting mechanism adapts different work piece thickness use.

Description

Technical Field

[0001] This utility model relates to the field of stamping die technology, specifically to a quick demolding structure for stamping dies for automotive body panels. Background Technology

[0002] Automotive body panels refer to the spatially shaped surface or internal parts made of thin metal sheets that cover the engine, chassis, and form the cab and body. They can be divided into three categories according to function and location: external body panels, internal body panels, and frame body panels. They differ from general stamped parts in terms of process design, mold processing, equipment selection, and quality control (dimensional tolerances, shape accuracy, part rigidity, surface quality). Automotive body panel stamping dies are key equipment in automobile manufacturing, used to produce large, thin-walled parts such as body panels, doors, and hoods.

[0003] Traditional stamping dies use a simple ejector structure during the demolding process, which results in uneven demolding force and can easily lead to deformation or scratches on thin-walled body panels. At the same time, the slow demolding speed also affects work efficiency. To address this, we propose a rapid demolding structure for automotive body panel stamping dies. Utility Model Content

[0004] The technical problem to be solved by this utility model is to overcome the existing defects and provide a quick demolding structure for stamping dies for automotive body panels. The quick demolding is achieved through the synergistic action of the main and auxiliary springs and the air pump-assisted blowing, reducing the workpiece adhesion force. Eight sets of adjustable demolding rods apply force evenly to avoid deformation. The ejection stroke is precisely controlled by a height sensor and controller. The screw adjustment mechanism is adapted to different workpiece thicknesses, which can effectively solve the problems in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a quick demolding structure for stamping dies for automotive body panels, comprising a bottom die and a demolding unit;

[0006] Bottom mold: The top surface is fitted with the bottom surface of the top mold. Fixed seats are fixed on both the front and rear sides inside the bottom mold. A main spring is installed inside the fixed seat. The bottom end of the bottom mold is connected to one side of the top surface of the push plate. The end of the push plate is slidably connected to the inside of the fixed seat. A through hole is opened on the bottom surface of the bottom mold. An auxiliary unit is provided on the side of the bottom mold.

[0007] Demolding unit: includes demolding grooves, demolding rods, auxiliary springs and support plates. There are eight demolding grooves, which are opened in groups of four on the top surface inside the bottom mold. An auxiliary spring is installed inside the demolding groove. The bottom end of the auxiliary spring is connected to the top surface of the support plate. A demolding rod that is slidably installed with the demolding groove is fixed in the middle of the top surface of the support plate.

[0008] It also includes a controller, which is located on the surface of the bottom mold, and the input terminal of the controller is electrically connected to the output terminal of an external power supply.

[0009] An external hydraulic rod pushes a push plate to raise a demolding rod to eject the automotive body panel. This ensures uniform ejection force and avoids localized stress that could cause workpiece deformation. The main spring, in conjunction with the auxiliary spring, automatically returns the demolding rod to its original position, facilitating subsequent demolding processes.

[0010] Furthermore, the demolding unit also includes a screw hole, a screw rod, a rotating wheel, and a retaining ring. The screw hole is opened inside the demolding rod and is threaded onto the screw rod. The rotating wheel is fixed to the bottom end of the screw rod. The retaining rings are evenly distributed on the top surface of the push plate and correspond to the position of the rotating wheel. Rotating the rotating wheel drives the screw rod to rotate for height adjustment. The retaining rings are locked on the outside of the rotating wheel to adjust the ejection sequence of multiple demolding rods to accommodate cover parts of different thicknesses or shapes.

[0011] Furthermore, the auxiliary unit includes demolding air holes, exhaust pipes, placement slots, an air pump, and a height sensor. There are two placement slots, each located on the side of the bottom mold. Demolding air holes are evenly distributed inside the placement slots. An exhaust pipe is inserted into the inside of the placement slot. The air pump is installed at the bottom end of the side of the bottom mold, and its outlet is connected to the inlet of the exhaust pipe. The height sensor is installed on the side of the top mold. The input of the air pump is electrically connected to the output of the controller, and the output of the height sensor is electrically connected to the input of the controller. The height sensor can detect the distance between the top mold and the bottom mold. After the top mold rises to a preset height, the air pump is activated to blow air through the demolding air holes into the gap between the automotive body panel and the mold cavity, thereby reducing the adhesion of the automotive body panel and preventing scratches and wear during demolding.

[0012] Furthermore, the auxiliary unit also includes a plate frame, a baffle plate, and a sealing gasket. The plate frame is fixed to the top of the side of the bottom mold. A baffle plate is inserted into the inside of the plate frame. A sealing gasket is adhered to the inner side of the baffle plate. The baffle plate inside the plate frame can prevent the exhaust pipe from coming out of the placement groove, while the sealing gasket can prevent air leakage.

[0013] Furthermore, it also includes a frame and a laser rangefinder. The frame is fixed in the middle of the top surface of the push plate, and the laser rangefinder is placed inside the frame. The output of the laser rangefinder is electrically connected to the input of the controller. The laser rangefinder monitors the push plate stroke in real time to improve the accuracy of the demolding rod lifting.

[0014] Furthermore, it also includes limiting rods and limiting grooves. There are four limiting rods, which are fixed at the four corners of the bottom surface of the top mold, and four limiting grooves, which are respectively opened at the four corners of the top surface of the bottom mold. The positions of the limiting rods and limiting grooves correspond to each other. The limiting rods and limiting grooves cooperate to ensure the alignment accuracy of the upper and lower molds and reduce the defects of automotive body panel stamping parts caused by mold closing deviation.

[0015] Compared with the prior art, the beneficial effects of this utility model are: the quick demolding structure of this automotive body panel stamping die has the following advantages:

[0016] 1. The ejector plate is pushed by an external hydraulic rod to raise the ejector rod and complete the ejection of the automotive body panel. This ensures uniform ejection force and avoids deformation of the workpiece due to local stress. The main spring and the auxiliary spring can automatically drive the ejector rod back to its original position to facilitate subsequent demolding processing.

[0017] 2. The height can be adjusted by rotating the wheel to drive the screw to rotate. The fixing ring is locked on the outside of the wheel to adjust the ejection sequence of multiple demolding rods to accommodate cover parts of different thicknesses or shapes.

[0018] 3. By starting the air pump, gas is blown through the demolding air holes into the gap between the automotive body panel and the mold cavity to reduce the adhesion of the automotive body panel, thereby preventing scratches and wear during the demolding process. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the auxiliary unit structure of this utility model;

[0021] Figure 3 This utility model Figure 2 A magnified view of the structure at point A in the middle;

[0022] Figure 4 This utility model Figure 2 A magnified schematic diagram of the structure at point B in the middle.

[0023] In the diagram: 1 Bottom mold, 2 Demolding unit, 21 Demolding groove, 22 Demolding rod, 23 Secondary spring, 24 Support plate, 25 Screw hole, 26 Screw, 27 Rotary wheel, 28 Fixing ring, 3 Auxiliary unit, 31 Demolding air hole, 32 Exhaust pipe, 33 Placement slot, 34 Air pump, 35 Height sensor, 36 Plate frame, 37 Baffle plate, 38 Sealing gasket, 4 Top mold, 5 Fixing base, 6 Main spring, 7 Push plate, 8 Frame, 9 Laser rangefinder sensor, 10 Limit rod, 11 Limit groove, 12 Controller. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Please see Figure 1-4 This embodiment provides a technical solution: a quick demolding structure for stamping dies for automotive body panels, including a bottom die 1 and a demolding unit 2;

[0026] Bottom mold 1: The top surface mates with the bottom surface of top mold 4. Fixed seats 5 are fixed on both the front and rear sides inside the bottom mold 1. A main spring 6 is installed inside the fixed seat 5. The bottom end of the bottom mold 1 is connected to one side of the top surface of the push plate 7. The end of the push plate 7 is slidably connected to the inside of the fixed seat 5. A through hole is opened on the bottom surface of the bottom mold 1. An auxiliary unit 3 is provided on the side of the bottom mold 1. The auxiliary unit 3 includes a demolding air hole 31, an exhaust pipe 32, a placement groove 33, an air pump 34, and a height sensor 35. There are two placement grooves 33, each located on the side of the bottom mold 1. Demolding air holes 31 are evenly distributed inside the placement grooves 33. An exhaust pipe 32 is snapped into the inside of the placement groove 33. The air pump 34 is installed at the bottom end of the side of the bottom mold 1. The air outlet of the air pump 34 is connected to the air inlet of the exhaust pipe 32. The height sensor 35 is installed on the side of the top mold 4. The input end of pump 34 is electrically connected to the output end of controller 12, and the output end of height sensor 35 is electrically connected to the input end of controller 12. Height sensor 35 can detect the distance between top mold 4 and bottom mold 1. After top mold 4 rises to a preset height, air pump 34 is started to blow gas through demolding air hole 31 into the gap between automotive body panel and mold cavity to reduce the adsorption force of automotive body panel and thus prevent scratches and wear during demolding. Auxiliary unit 3 also includes plate frame 36, baffle plate 37 and sealing gasket 38. Plate frame 36 is fixed to the top of the side of bottom mold 1. Baffle plate 37 is inserted inside plate frame 36. Sealing gasket 38 is glued to the inner side of baffle plate 37. Baffle plate 37 inside plate frame 36 can prevent exhaust pipe 32 from falling out of placement groove 33, while sealing gasket 38 can prevent air leakage.

[0027] Demolding unit 2 includes demolding grooves 21, demolding rods 22, auxiliary springs 23, and a support plate 24. Eight demolding grooves 21 are formed in groups of four on the top surface inside the bottom mold 1. Auxiliary springs 23 are installed inside the demolding grooves 21, with their bottom ends connected to the top surface of the support plate 24. Demolding rods 22, which are slidably mounted to the demolding grooves 21, are fixed to the center of the top surface of the support plate 24. Demolding unit 2 also includes screw holes 25, screws 26, a rotating wheel 27, and a retaining ring 2. 8. The screw hole 25 is opened inside the demolding rod 22. The screw hole 25 is threaded to the screw rod 26. The bottom end of the screw rod 26 is fixed with a rotating wheel 27. The fixing rings 28 are evenly distributed on the top surface of the push plate 7. The fixing rings 28 and the rotating wheel 27 are positioned correspondingly. Rotating the rotating wheel 27 drives the screw rod 26 to rotate for height adjustment. The fixing rings 28 are locked on the outside of the rotating wheel 27 to adjust the ejection sequence of multiple demolding rods 22 to adapt to cover parts of different thicknesses or shapes.

[0028] The system also includes a controller 12, which is mounted on the surface of the bottom mold 1. The input of the controller 12 is electrically connected to the output of an external power supply. An external hydraulic rod pushes the push plate 7 to raise the eight demolding rods 22 to eject the automotive body panel, ensuring uniform ejection force and avoiding workpiece deformation caused by localized stress. The main spring 6, in conjunction with the auxiliary spring 23, can automatically drive the demolding rods 22 back to their original positions to facilitate subsequent demolding processing. The system also includes a frame 8 and a laser rangefinder 9. The frame 8 is fixed to the center of the top surface of the push plate 7, and the laser rangefinder 9 is placed inside the frame 8. Sensor 9, the output of the laser rangefinder sensor 9 is electrically connected to the input of the controller 12. The laser rangefinder sensor 9 monitors the stroke of the push plate 7 in real time to improve the accuracy of the lifting and lowering of the demolding rod 22. It also includes limit rods 10 and limit grooves 11. There are four limit rods 10, which are fixed at the four corners of the bottom surface of the top mold 4. There are four limit grooves 11, which are opened at the four corners of the top surface of the bottom mold 1. The positions of the limit rods 10 and the limit grooves 11 correspond to each other. The limit rods 10 and the limit grooves 11 cooperate to ensure the alignment accuracy of the upper and lower molds and reduce the defects of automotive body panel stamping parts caused by mold closing deviation.

[0029] The working principle of the quick demolding structure of the automotive body panel stamping die provided by this utility model is as follows: First, the rotating wheel 27 drives the screw 26 to rotate for height adjustment. After the automotive body panel is stamped, the height sensor 35 can detect the distance between the top die 4 and the bottom die 1. After the top die 4 rises to the preset height, the air pump 34 is started to blow gas through the demolding air hole 31 into the gap between the automotive body panel and the die cavity to reduce the suction force of the automotive body panel, thereby preventing scratches and wear during demolding. At the same time, the external hydraulic rod pushes the push plate 7 to drive the eight demolding rods 22 to rise to complete the demolding process. For ejecting automotive body panels, this ensures uniform ejection force and avoids workpiece deformation caused by localized stress. The laser range sensor 9 monitors the stroke of the push plate 7 in real time to improve the accuracy of the lifting and lowering of the ejector rod 22. The main spring 6, in conjunction with the auxiliary spring 23, can automatically drive the ejector rod 22 back to its original position to facilitate subsequent demolding processing. At the same time, the fixing ring 28 can be locked on the outside of the rotating wheel 27 to adjust the ejection sequence of multiple ejector rods 22 to adapt to body panels of different thicknesses or shapes. The limiting rod 10 and the limiting groove 11 cooperate to ensure the alignment accuracy of the upper and lower molds and reduce defects in automotive body panel stampings caused by mold closing deviations.

[0030] It is worth noting that the controller 12 disclosed in the above embodiments is provided with buttons on its surface corresponding to the air pump 34, the altitude sensor 35, and the laser rangefinder 9. The controller 12 controls the operation of the air pump 34, the altitude sensor 35, and the laser rangefinder 9 using methods commonly used in the prior art.

[0031] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A quick-release structure for stamping dies for automotive body panels, characterized in that: Includes a bottom mold (1) and a demolding unit (2); Bottom mold (1): The top surface is fitted with the bottom surface of the top mold (4). The front and rear sides of the bottom mold (1) are fixed with fixed seats (5). The main spring (6) is installed inside the fixed seat (5). The bottom end of the bottom mold (1) is connected to one side of the top surface of the push plate (7). The end of the push plate (7) is slidably connected to the inside of the fixed seat (5). The bottom surface of the bottom mold (1) has a through hole. The side of the bottom mold (1) is provided with an auxiliary unit (3). Demolding unit (2): includes demolding groove (21), demolding rod (22), auxiliary spring (23) and support plate (24). There are eight demolding grooves (21) and they are opened in groups of four on the top surface inside the bottom mold (1). The auxiliary spring (23) is installed inside the demolding groove (21). The bottom end of the auxiliary spring (23) is connected to the top surface of the support plate (24). The demolding rod (22) is fixed in the middle of the top surface of the support plate (24) and is slidably installed with the demolding groove (21). It also includes a controller (12), which is located on the surface of the bottom mold (1), and the input end of the controller (12) is electrically connected to the output end of an external power supply.

2. The quick demolding structure for the stamping die of automotive body panels according to claim 1, characterized in that: The demolding unit (2) also includes a screw hole (25), a screw (26), a rotating wheel (27) and a retaining ring (28). The screw hole (25) is opened inside the demolding rod (22). The screw hole (25) is threadedly installed with the screw (26). The rotating wheel (27) is fixed at the bottom end of the screw (26). The retaining ring (28) is evenly distributed on the top surface of the push plate (7). The positions of the retaining ring (28) and the rotating wheel (27) are corresponding.

3. The quick demolding structure for automotive body panel stamping dies according to claim 1, characterized in that: The auxiliary unit (3) includes a demolding air hole (31), an exhaust pipe (32), a placement slot (33), an air pump (34), and a height sensor (35). There are two placement slots (33), which are respectively opened on the side of the bottom mold (1). The placement slot (33) is evenly provided with demolding air holes (31). The exhaust pipe (32) is snapped into the inside of the placement slot (33). The air pump (34) is installed at the bottom end of the side of the bottom mold (1). The air outlet of the air pump (34) is connected to the air inlet of the exhaust pipe (32). The height sensor (35) is installed on the side of the top mold (4). The input end of the air pump (34) is electrically connected to the output end of the controller (12). The output end of the height sensor (35) is electrically connected to the input end of the controller (12).

4. The quick demolding structure for the stamping die of automotive body panels according to claim 1, characterized in that: The auxiliary unit (3) also includes a plate frame (36), a baffle plate (37) and a sealing gasket (38). The plate frame (36) is fixed to the top of the side of the bottom mold (1). The baffle plate (37) is inserted into the inside of the plate frame (36). The sealing gasket (38) is glued to the inner side of the baffle plate (37).

5. The quick demolding structure for the stamping die of automotive body panels according to claim 1, characterized in that: It also includes a frame (8) and a laser rangefinder (9). The frame (8) is fixed in the middle of the top surface of the push plate (7). The laser rangefinder (9) is placed inside the frame (8). The output of the laser rangefinder (9) is electrically connected to the input of the controller (12).

6. The quick demolding structure for the stamping die of automotive body panels according to claim 1, characterized in that: It also includes a limiting rod (10) and a limiting groove (11). There are four limiting rods (10) and they are fixed at the four corners of the bottom surface of the top mold (4). There are four limiting grooves (11) and they are opened at the four corners of the top surface of the bottom mold (1). The positions of the limiting rods (10) and the limiting grooves (11) correspond to each other.

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