A high-efficiency stamping device for car doors

Abstract

This utility model relates to a high-efficiency stamping device for car doors, belonging to the field of automotive parts processing technology. The high-efficiency stamping device for car doors includes: an upper die, a lower die, and a lubrication mechanism. The top of the upper die has a guide hole, and a guide post, fixedly connected to the lower die, is slidably connected to the inner side of the guide hole. A fluid guiding channel is provided at the side end of the guide post. This device uses the inverted conical structure design of the fluid guiding ring, combined with the fluid guiding channel, to continuously inject lubricating oil, ensuring that the lubricating oil is evenly coated on the surface of the guide post. This design not only achieves active lubrication but also utilizes the downward flow of the oil film to flush away metal debris and dust from the surface of the guide post, preventing the accumulation of impurities that form abrasive media, thereby significantly reducing scratches and wear on the guide post and ensuring its long-term operational accuracy.

Description

Technical Field

[0001] This utility model relates to the field of automotive parts processing technology, and in particular to a high-efficiency stamping device for car doors. Background Technology

[0002] After the steel plate is cut, it is stamped into the outer contour of the car door through a mold, and then the edge trimming, punching and other processes are carried out to form a complete outer panel. At present, hydraulic stamping presses with molds are the most common stamping devices for car door outer panels.

[0003] Since the guide pillars in stamping dies require regular lubrication and maintenance, the surface of existing guide pillar structures is often equipped with a sliding sponge structure to extend the lubrication interval. However, the sponge structure easily absorbs metal shavings and dust particles, forming an abrasive medium that accelerates scratches and wear on the guide pillar surface, thereby affecting the accuracy of the guide pillar during long-term operation. Utility Model Content

[0004] Therefore, it is necessary to provide a high-efficiency stamping device for car doors, which addresses the problem that the existing high-efficiency stamping guide post lubrication structure easily traps impurities and increases wear on the guide post.

[0005] A high-efficiency stamping device for car doors includes: an upper die, a lower die, and a lubrication mechanism. The top of the upper die has a guide hole, and a guide post that is fixedly connected to the lower die is slidably connected to the inner side of the guide hole. A liquid guiding channel is provided at the side end of the guide post.

[0006] In one embodiment, the lubrication mechanism includes a liquid guide cup, the guide post is fixedly connected to the inner bottom wall of the liquid guide cup, the liquid guide cup is fixedly connected to the upper surface of the lower mold, a filter assembly is fixedly connected and communicated to the surface of the liquid guide cup, the liquid outlet end of the filter assembly is fixedly connected and communicated to an infusion pump, and the liquid outlet end of the infusion pump is fixedly connected and communicated to the liquid inlet end of the liquid guide channel.

[0007] In one embodiment, the filter assembly includes a threaded cap fixedly connected to the side end of the lower mold. The top of the threaded cap is fixedly connected to and communicates with an outlet pipe that is fixedly connected to and communicates with a liquid guide cup. The bottom of the threaded cap is threadedly connected to a liquid storage cup. A filter screen is embedded inside the liquid guide cup and installed below the outlet pipe. The top of the filter screen has a conduit opening. An inlet pipe is slidably connected to the inside of the conduit opening. The top of the inlet pipe passes through the threaded cap and is fixedly connected to and communicates with the inlet end of the infusion pump.

[0008] In one embodiment, the liquid storage cup is a transparent acrylic material component, and the surface of the liquid storage cup is provided with liquid level markings.

[0009] In one embodiment, a positioning ring is fixedly connected to the inner side of the liquid storage cup, and a ring groove is formed at the bottom of the filter screen to contact the positioning ring.

[0010] In one embodiment, a sealing ring is embedded inside the conduit opening, and the sealing ring is fitted onto the surface of the inlet tube.

[0011] In one embodiment, the cross-sectional shape of the bottom wall of the liquid guide cup is sloping, and the lowest point of the bottom wall of the liquid guide cup is connected to the inlet of the liquid outlet pipe.

[0012] In one embodiment, the lubrication mechanism further includes a liquid guiding ring fixedly connected to the bottom of the upper mold, the guide post being disposed inside the liquid guiding ring, and the outlet of the liquid guiding channel being disposed inside the liquid guiding ring.

[0013] In one embodiment, the vertical cross-sectional shape of the inner side of the liquid guiding ring is an inverted cone, and the length ratio of the inner diameter of the lower opening of the liquid guiding ring to the diameter of the guide post is 10 to 9.

[0014] Beneficial effects

[0015] The aforementioned high-efficiency stamping device for car doors uses an inverted conical structure design of a liquid guiding ring to continuously inject lubricating oil through a liquid guiding channel, so that the lubricating oil is evenly coated on the surface of the guide post. This design not only achieves active lubrication, but also utilizes the downward flow of the oil film to flush away metal debris and dust from the surface of the guide post, preventing impurities from accumulating and forming abrasive media, thereby significantly reducing scratches and wear on the guide post and ensuring its long-term operational accuracy.

[0016] The filtration assembly adopts a modular design with a detachable reservoir cup and filter screen, combined with an infusion pump to achieve closed-loop circulation of lubricating oil. During maintenance, simply add lubricating oil to the transparent reservoir cup and assemble the filter screen. The system can automatically filter and recover lubricating oil containing impurities, and reuse clean lubricating oil after separating solid particles. This structure greatly simplifies the maintenance process, reduces the frequency of manual intervention, and lowers the cost of lubricating oil consumption. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a cross-sectional view of the overall structure of this utility model;

[0020] Figure 3 This is a partial cross-sectional view of the filter assembly in this utility model;

[0021] Figure 4 for Figure 3 A magnified view of A in the middle.

[0022] Figure label:

[0023] 100. Upper mold; 110. Guide hole; 200. Lower mold; 300. Guide post; 310. Liquid channel; 400. Lubrication mechanism; 410. Liquid cup; 420. Filter assembly; 421. Threaded cap; 422. Liquid outlet pipe; 423. Liquid storage cup; 424. Filter screen; 425. Guide port; 426. Liquid inlet pipe; 427. Positioning ring; 428. Ring groove; 429. Sealing ring; 430. Infusion pump; 440. Liquid guide ring sleeve. Detailed Implementation

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

[0025] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on the other component or there may be an intermediate component. When a component is considered to be "connected to" another component, it can be directly connected to the other component or there may be an intermediate component present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this specification are for illustrative purposes only and do not represent the only possible implementation.

[0026] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0027] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature and the second feature are in indirect contact through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0028] Unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as commonly understood by one of ordinary skill in the art to which this specification belongs. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used in this specification includes any and all combinations of one or more of the associated listed items.

[0029] The following is combined Figures 1-4 This invention describes a high-efficiency stamping device for car doors.

[0030] In one embodiment, a high-efficiency stamping device for car doors includes: an upper die 100, a lower die 200, and a lubrication mechanism 400. The upper die 100 has a guide hole 110 on its top, and a guide post 300 that is fixedly connected to the lower die 200 is slidably connected to the inner side of the guide hole 110. A liquid guiding channel 310 is provided on the side end of the guide post 300.

[0031] like Figure 2 , Figure 3 and Figure 4 As shown, the lubrication mechanism 400 includes a liquid guide cup 410, a guide post 300 fixedly connected to the inner bottom wall of the liquid guide cup 410, the liquid guide cup 410 fixedly connected to the upper surface of the lower mold 200, a filter assembly 420 fixedly connected and connected to the surface of the liquid guide cup 410, an infusion pump 430 fixedly connected and connected to the outlet end of the filter assembly 420, and an infusion pump 430 fixedly connected and connected to the inlet end of the liquid guide channel 310; the cross-sectional shape of the inner bottom wall of the liquid guide cup 410 is... The liquid guide cup 410 is sloping, and the lowest point of its inner bottom wall is connected to the inlet of the liquid outlet pipe 422. The lubrication mechanism 400 also includes a liquid guide ring 440 fixedly connected to the bottom of the upper mold 100. The guide post 300 is disposed on the inner side of the liquid guide ring 440, and the outlet of the liquid guide channel 310 is disposed inside the liquid guide ring 440. The vertical cross-sectional shape of the inner side of the liquid guide ring 440 is an inverted cone shape, and the length ratio of the inner diameter of the lower opening of the liquid guide ring 440 to the diameter of the guide post 300 is 10 to 9.

[0032] like Figure 3 and Figure 4 As shown, the filter assembly 420 includes a threaded cap 421 fixedly connected to the side of the lower mold 200. The top of the threaded cap 421 is fixedly connected to and communicates with an outlet pipe 422 fixedly connected to and communicates with a liquid guide cup 410. The bottom of the threaded cap 421 is threadedly connected to a storage cup 423. A filter screen 424 is embedded inside the liquid guide cup 410 and positioned below the outlet pipe 422. The top of the filter screen 424 has a conduit opening 425, and an inlet pipe 42 is slidably connected to the inner side of the conduit opening 425. 6. The top of the inlet pipe 426 extends through the threaded cap 421 and is fixedly connected to and communicates with the inlet end of the infusion pump 430; the storage cup 423 is a transparent acrylic material component, and the surface of the storage cup 423 is provided with liquid level scale; a positioning ring 427 is fixedly connected to the inner side of the storage cup 423, and the bottom of the filter screen 424 is provided with an annular groove 428 that contacts the positioning ring 427; a sealing ring 429 is embedded in the inside of the conduit port 425, and the sealing ring 429 is sleeved on the surface of the inlet pipe 426.

[0033] In this embodiment, before using the filter assembly 420, first remove the liquid storage cup 423, add a measured amount of lubricating oil into the inside of the liquid storage cup 423, then place the filter screen 424 on the positioning ring 427, then pass the liquid inlet pipe 426 through the guide pipe port 425 and screw the liquid storage cup 423 onto the threaded cap 421 for normal use.

[0034] When the infusion pump 430 is started, it draws lubricating oil from the inside of the reservoir cup 423 through the inlet pipe 426. When the lubricating oil containing impurities enters the inside of the outlet pipe 422 through the guide cup 410, the lubricating oil enters the reservoir cup 423 through the outlet pipe 422. At this time, the filter screen 424 filters out solid impurities in the lubricating oil. Then the clean lubricating oil is guided to the lower part of the reservoir cup 423 for the infusion pump 430 to circulate.

[0035] Working principle: When maintenance personnel need to periodically maintain and lubricate the guide column 300, they only need to manually turn on the infusion pump 430. The infusion pump 430 draws the lubricating oil added in advance in the filter assembly 420 into the liquid guiding channel 310. The lubricating oil enters the inner side of the liquid guiding ring 440 along the liquid guiding channel 310, and is evenly coated on the surface of the guide column 300 under the guidance of the liquid guiding ring 440. This not only lubricates the surface of the guide column 300, but also carries away the impurities adhering to the surface of the guide column 300 downwards, ensuring that the surface of the guide column 300 is in a clean and lubricated state. Then, the lubricating oil carrying impurities returns to the filter assembly 420 along the liquid guiding cup 410 for filtration and reuse.

[0036] Hydraulic stamping presses include, but are not limited to, the following structures:

[0037] I. Fuselage Frame Structure

[0038] Gantry frame: The main body is a closed gantry frame consisting of a base, columns and a top plate welded from high-strength steel plates, which has excellent resistance to eccentric loads and stiffness stability.

[0039] Adjustable worktable: The worktable adopts a height-adjustable design to accommodate molds of different heights. Some models are equipped with magnetic pads or shock-absorbing pads to improve stamping accuracy. The lower mold 200 is fixedly connected to the top of the adjustable worktable by bolts.

[0040] Crossbeam configuration: Some equipment adopts a three-beam structure to enhance overall rigidity and reduce deformation.

[0041] II. Hydraulic Power System

[0042] Core components include a hydraulic pump station, actuator cylinders, pipelines, and control valve assembly, with pressure and speed precisely controlled by a PLC.

[0043] High-performance drive: The servo motor, in conjunction with the high-precision oil pump, achieves stepless speed change. Some models integrate a rapid booster cylinder to meet the instantaneous high-pressure requirements of door stretching.

[0044] Energy transfer: The main hydraulic cylinder piston drives the slider to move, the ejector cylinder is installed in the worktable to assist demolding, the oil circuit circulates through a one-way valve, and the upper mold 100 is fixedly connected to the bottom of the slider by bolts.

[0045] The assembly and operation process of the hydraulic stamping press and mold for car door stamping must strictly follow precision and safety specifications. The specific steps are as follows:

[0046] Assembly process of hydraulic stamping press with upper die 100 and lower die 200

[0047] (1) Installation of lower mold 200

[0048] Cleaning and positioning: The lower mold 200 is precisely placed in the center of the hydraulic press worktable and initially fixed with T-slot bolts to ensure that there are no impurities on the contact surface between the worktable and the lower mold base.

[0049] Horizontal calibration: Use a level to adjust the lower mold to a 200° horizontal level and tighten the bolts.

[0050] Guide post 300 installation: Press the guide post 300 into the liquid guide cup 410 of the lower mold 200, ensuring that the lower end face of the guide post 300 is 1-2mm away from the bottom surface of the mold base.

[0051] (2) Installation of upper mold 100

[0052] Zeroing the slider: Start the hydraulic press, lower the slider to the bottom dead center (to fit the worktable surface), and reset the pressure gauge.

[0053] Hoisting and fixing: The upper mold 100 is fixed to the bottom surface of the slider by the mold handle or pressure plate, and the bolts are lightly tightened.

[0054] Gap adjustment:

[0055] Guided matching: The slider descends slowly, allowing the guide hole 110 on the upper mold 100 to gradually engage with the guide post 300 on the lower mold 200, ensuring no jamming.

[0056] Punch and die clearance: The clearance between the punch and die is adjusted by means of light transmission or feeler gauge. The clearance of the car door steel plate is usually 5% to 10% of the material thickness.

[0057] Final tightening: After confirming that the gap is uniform, tighten the bolts on the upper mold 100 in diagonal order, and re-measure the gap and perpendicularity.

[0058] (3) Safety and Functional Testing

[0059] Protective devices: Install the electromechanical interlock device for the protective door and test the limit switch.

[0060] Ejection mechanism: Connect to the oil circuit of the ejection cylinder and test whether the unloading plate moves smoothly.

[0061] No-load test run: Perform 3-5 low-speed air strokes to check the lubrication of the guide post 300 and the stability of the slider trajectory.

[0062] II. Stamping Operation Process

[0063] Key process descriptions:

[0064] Placement stage: Place the cut sheet material in the corresponding position on the lower mold 200.

[0065] Rapid descent: The servo motor drives a dual-pump oil supply, and the slider approaches the sheet metal at a speed of 100-200 mm / s.

[0066] Working feed pressurization: When approaching the sheet metal, switch to high-pressure small pump oil supply, the speed drops to 5-30mm / s, and the main cylinder applies rated pressure to complete the drawing / forming.

[0067] Pressure holding and shaping: High pressure is maintained for 0.5 to 3 seconds to eliminate the springback of the door surface (especially the edge area).

[0068] Unloading and return stroke: The main cylinder is depressurized, and the return cylinder lifts the slider at a speed of 150-250 mm / s, and the mold stripper plate demolds synchronously.

[0069] Ejection and part removal: The ejector cylinder of the lower mold 200 pushes the support plate to lift the workpiece, and the robot arm removes the workpiece and transfers it to the trimming process.

[0070] It should be noted that the hydraulic press and infusion pump 430 mentioned above are both devices with relatively mature existing technology. The specific model can be selected according to actual needs. At the same time, the hydraulic press and infusion pump 430 are powered by AC mains power. The specific power supply method can be selected according to the situation, which will not be elaborated here.

[0071] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0072] The above-described embodiments are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of this utility model. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the appended claims.

Claims

1. A high efficiency stamping device for vehicle doors, characterized in that, include: The upper mold (100) and the lower mold (200) are provided. The top of the upper mold (100) is provided with a guide hole (110). The inner side of the guide hole (110) is slidably connected to a guide post (300) which is fixedly connected to the lower mold (200). The side end of the guide post (300) is provided with a liquid guiding channel (310). The lubrication mechanism (400) includes a liquid guide cup (410), a guide post (300) is fixedly connected to the inner bottom wall of the liquid guide cup (410), the liquid guide cup (410) is fixedly connected to the upper surface of the lower mold (200), a filter assembly (420) is fixedly connected and communicated to the surface of the liquid guide cup (410), the outlet end of the filter assembly (420) is fixedly connected and communicated to an infusion pump (430), and the outlet end of the infusion pump (430) is fixedly connected and communicated to the inlet end of the liquid guide channel (310).

2. The high-efficiency stamping device for car doors according to claim 1, characterized in that, The filter assembly (420) includes a threaded cap (421) fixedly connected to the side of the lower mold (200). The top of the threaded cap (421) is fixedly connected to and communicates with an outlet pipe (422) fixedly connected to and communicates with a liquid guide cup (410). The bottom of the threaded cap (421) is threadedly connected to a storage cup (423). A filter screen (424) is embedded in the inside of the liquid guide cup (410) and is located below the outlet pipe (422). The top of the filter screen (424) is provided with a conduit port (425). An inlet pipe (426) is slidably connected to the inside of the conduit port (425). The top of the inlet pipe (426) passes through the threaded cap (421) and is fixedly connected to and communicates with the inlet end of the infusion pump (430).

3. The high-efficiency stamping device for car doors according to claim 2, characterized in that, The liquid storage cup (423) is a transparent acrylic material component, and the surface of the liquid storage cup (423) is provided with liquid level scale.

4. The high-efficiency stamping device for car doors according to claim 2, characterized in that, A positioning ring (427) is fixedly connected to the inner side of the liquid storage cup (423), and a ring groove (428) is opened at the bottom of the filter screen (424) to contact the positioning ring (427).

5. The high-efficiency stamping device for car doors according to claim 2, characterized in that, A sealing ring (429) is embedded inside the conduit port (425), and the sealing ring (429) is fitted onto the surface of the inlet pipe (426).

6. The high-efficiency stamping device for car doors according to claim 1, characterized in that, The cross-sectional shape of the bottom wall of the liquid guide cup (410) is sloping, and the lowest point of the bottom wall of the liquid guide cup (410) is connected to the inlet of the liquid outlet pipe (422).

7. The high-efficiency stamping device for car doors according to claim 1, characterized in that, The lubrication mechanism (400) also includes a liquid guiding ring (440) fixedly connected to the bottom of the upper mold (100), the guide post (300) is disposed inside the liquid guiding ring (440), and the outlet of the liquid guiding channel (310) is disposed inside the liquid guiding ring (440).

8. The high-efficiency stamping device for car doors according to claim 7, characterized in that, The vertical cross-sectional shape of the inner side of the liquid guiding ring (440) is an inverted cone, and the length ratio of the inner diameter of the lower opening of the liquid guiding ring (440) to the diameter of the guide post (300) is 10 to 9.

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