Punching and blanking die for convex point pressing of aluminum plate

Abstract

The invention provides an aluminum plate embossed point stamping and blanking die. The aluminum plate embossed point stamping and blanking die comprises a lower die, an upper die, an embossed point protruding block, an embossed point pressing block, a material pressing core, a trimming male die and a trimming cutter block. The bump pressing block is arranged at the lower part of the upper die, and the lower surface of the bump pressing block is a plane and is used for being in contact with the upper surface of a plate during die assembly; the convex point pressing convex block is arranged on the lower die and is used for being in contact with the lower surface of a plate when a part is placed; the convex point pressing pressing block and the convex point pressing convex block are oppositely arranged; the upper part of the upper die is provided with a material pressing core for convex point material pressing; the upper part of the upper die is also provided with a trimming knife block for blanking; and a trimming male die is arranged on the lower die. Physical gaps between the aluminum plates are effectively improved, the airflow penetrability is enhanced through the gaps formed by the protruding points, the pneumatic separation efficiency is improved, the problem that double materials are pressed by a stamping die is effectively solved, and the production risk of the aluminum plate stamping die is avoided.

Description

Technical Field

[0001] The present invention relates to the field of automobiles, and more particularly, to a stamping and blanking die for embossing aluminum plates. Background Art

[0002] In the stamping process of aluminum plates, due to the adhesion of solid lubricants (such as wax-based or polymer-based lubricants) coated on the surface of the plates, the phenomenon of "double sheets" (i.e., multiple sheets of plates entering the die simultaneously) is very likely to occur. Double-sheet stamping will cause abnormal wear of the die, dimensional deviation of the product, and even damage to the die, seriously reducing production efficiency and yield.

[0003] Traditional pneumatic sheet separation technology mainly realizes separation by blowing high-pressure air through the gap between the sheets. However, high-viscosity lubricating oil will block the air flow channel, and separation fails when the oil film thickens; magnetic sheet separation mainly uses magnetic repulsion to separate the sheets, which is only applicable to ferromagnetic materials and ineffective for aluminum plates. Therefore, due to the influence of oil products and the weight of the sheet material, the existing pneumatic sheet separation technology for aluminum plates makes it difficult to achieve 100% separation of two sheets of plates only by blowing high-pressure air through the plates. If double-sheet pressing occurs, the die is easily damaged, increasing the production risk and maintenance cost of the workshop. Summary of the Invention

[0004] Aiming at the defects in the prior art, the purpose of the present invention is to provide a stamping and blanking die for embossing aluminum plates, aiming to effectively increase the physical gap between aluminum plates, enhance the air flow penetration by using the voids formed by the embossed points, improve the pneumatic sheet separation efficiency, effectively avoid the problem of double-sheet pressing in the stamping die, and avoid the production risk of the aluminum plate stamping die.

[0005] To achieve the above object of the invention, the following technical solutions are adopted:

[0006] The present invention provides a stamping and blanking die for embossing aluminum plates, including: a lower die, an upper die, an embossing convex block, an embossing pressure block, a blank holder core, a trimming punch, and a trimming blade block;

[0007] The embossing pressure block is arranged at the lower part of the upper die, and the lower surface of the embossing pressure block is a plane, which is used to contact the upper surface of the sheet material when the die is closed;

[0008] The embossing convex block is arranged on the lower die and is used to contact the lower surface of the sheet material when placing the workpiece; the embossing pressure block and the embossing convex block are arranged opposite to each other;

[0009] The upper part of the upper die is provided with a blank holder core for embossing the sheet material; the upper part of the upper die is also provided with a trimming blade block for blanking;

[0010] The lower die is provided with a trimming punch.

[0011] Preferably, the installation centers of the embossing point pressing block and the embossing point bump coincide; the distance between the center of the embossing point bump and the edge trimming punch edge is 30 mm.

[0012] Preferably, the outer diameter of the embossing point bump is φ6.35; the distance between the embossing point bump and the embossing point pressing block is 0.5 mm.

[0013] Preferably, the outer diameter of the embossing point pressing block is φ30.

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

[0015] With the mechanical embossing point structure, the present invention can directly perform stamping forming on the blanking die, forming a rigid physical gap between adjacent sheet materials, enhancing the air flow penetration by using the voids formed by the bumps, improving the pneumatic separation efficiency, effectively avoiding the problem of double-sheet pressing in the stamping die, avoiding the production risk of the aluminum sheet stamping die. At the same time, there is no need to increase the working steps or develop additional molds, nor to perform additional modifications on the stamping equipment. The bumps are formed when the sheet material is blanked, and after production, it is directly sent to the production line for production, ensuring product quality while effectively simplifying the manufacturing production process risk and saving manufacturing costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] By reading the following detailed description of the non-limiting embodiments with reference to the accompanying drawings, other features, objectives, and advantages of the present invention will become more apparent:

[0017] Figure 1 It is a schematic structural diagram of the embossing point pressing block and the embossing point bump in the embodiment;

[0018] Figure 2 It is a schematic structural diagram of the upper die in the embodiment;

[0019] Figure 3 It is a schematic structural diagram of the lower die in the embodiment;

[0020] Figure 4 It is a schematic diagram of the working state of the aluminum sheet embossing point stamping and blanking die in the embodiment.

[0021] As shown in the figure:

[0022] 1 - Lower die;

[0023] 2 - Upper die;

[0024] 3 - Embossing point bump;

[0025] 4 - Embossing point pressing block;

[0026] 5 - Pressure pad core;

[0027] 6 - Edge trimming punch;

[0028] 7 - Trimming tool block;

[0029] 8 - Sheet metal. Detailed implementation manner

[0030] To make the objectives, technical solutions, and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are some, but not all, of the embodiments of the present application. The components of the embodiments of the present application usually described and illustrated in the accompanying drawings here can be arranged and designed in various different configurations.

[0031] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application claimed, but merely represents the selected embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without creative efforts fall within the scope of protection of the present application.

[0032] It should be noted that similar reference numerals and letters indicate similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings. In addition, all directional indications (such as up, down, left, right, front, back, bottom...) in the present application are only used to explain the relative positional relationship and movement conditions between components in a specific posture (as shown in the drawings). If the specific posture changes, the directional indications will also change accordingly.

[0033] Embodiment

[0034] This embodiment provides an aluminum plate convex point stamping and blanking die, aiming to directly perform stamping forming on the blanking die through a special structural design, without adding working steps or developing additional dies, and without additional modification of the stamping equipment. However, it can solve the disadvantage of the risk of failure in pneumatic separation in traditional pneumatic separation, effectively avoid double - material pressing in the aluminum plate stamping die, ensure product quality, and effectively simplify the manufacturing production process risk while saving manufacturing costs.

[0035] An aluminum plate convex point stamping and blanking die provided in this embodiment, as Figures 1-4 shown, specifically includes: lower die 1, upper die 2, convex point bump 3, convex point pressing block 4, blank - holding core 5, trimming punch 6, trimming tool block 7.

[0036] Regarding the structural design of the embossing point pressing block 4, the embossing point pressing block 4 is arranged at the lower part of the upper die 2, and the lower surface of the embossing point pressing block 4 is a plane, which is used to contact the upper surface of the sheet metal 8 during mold closing to ensure uniform pressure distribution and reduce material tearing particles caused by local stress concentration. Further, the outer diameter dimension of the embossing point pressing block 4 is φ30.

[0037] Regarding the structural design of the embossing point convex block 3, the embossing point convex block 3 is arranged on the lower die 1 and is used to contact the lower surface of the sheet metal 8 when placing the workpiece; the embossing point pressing block 4 and the embossing point convex block 3 are arranged opposite to each other. Further, the installation centers of the embossing point pressing block 4 and the embossing point convex block 3 coincide. Furthermore, the outer diameter dimension of the embossing point convex block 3 is φ6.35 to avoid cracking caused by sharp corner stress concentration; the distance between the embossing point convex block 3 and the embossing point pressing block 4 is 0.5 mm. The distance between the center of the embossing point convex block 3 and the cutting edge of the trimming punch 6 is 30 mm, so that the convex point forming area can obtain rigid support during trimming, suppress the contour deformation caused by stress release after trimming, and avoid trimming stress interfering with convex point forming.

[0038] A pressure pad 5 for convex point blank holding is provided at the upper part of the upper die 2. During mold closing, it presses the sheet metal 8 to prevent the workpiece from moving when embossing the convex point. A trimming blade block 7 for blanking is also provided at the upper part of the upper die 2. A trimming punch 6 is provided on the lower die 1.

[0039] The working principle of a stamping and blanking die for embossing convex points on an aluminum plate provided in this embodiment is specifically introduced as follows. The stamping method for embossing convex points on the sheet metal includes a workpiece placing stage and a mold closing and embossing stage.

[0040] In the workpiece placing stage: The sheet metal 8 is placed on the lower die 2. After the embossing point pressing block 3 contacts the lower surface of the sheet metal 8, it enters the next stage;

[0041] In the mold closing and embossing stage, the upper die 2 moves downward. During the process, the pressure pad 5 first contacts the upper surface of the sheet metal 8. After the pressure pad 5 is in place, the upper die 2 continues to move downward. The trimming blade block 7 contacts the trimming punch 6 to start the trimming work. At 0.5 mm before reaching the bottom, the embossing point pressing block 4 contacts the upper surface of the sheet metal 8 to start the embossing point work until the upper die 2 reaches the bottom and the embossing point work is completed.

[0042] The die provided in this embodiment can directly perform stamping forming on the blanking die through a mechanical embossing point structure, forming a rigid physical gap between adjacent sheet metals to completely avoid adsorption. There is no need to add working steps or develop additional dies, nor is it necessary to perform additional modifications to the stamping equipment. The convex points are formed when the sheet metal is blanked. After production, it is directly sent to the production line for production, which ensures product quality while effectively simplifying the manufacturing production process risk and saving manufacturing costs.

[0043] The specific embodiments of the present invention have been described above. Through the above description, relevant staff can make various changes and modifications completely within the scope not deviating from the technical idea of the present invention.

Claims

1. An aluminum plate embossing and blanking die, characterized in that, Comprising: Lower die, upper die, embossing point bump, embossing point pressing block, blank holding core, trimming punch, trimming blade block; The embossing point pressing block is arranged at the lower part of the upper die, and the lower surface of the embossing point pressing block is a plane for contacting the upper surface of the sheet metal during die closing; The embossing point bump is arranged on the lower die for contacting the lower surface of the sheet metal when placing the workpiece; the embossing point pressing block and the embossing point bump are arranged opposite to each other; A blank holding core for convex point blank holding is arranged at the upper part of the upper die; a trimming blade block for blanking is also arranged at the upper part of the upper die; A trimming punch is arranged on the lower die.

2. The embossing and blanking die for aluminum plates according to claim 1, wherein The installation centers of the embossing point pressing block and the embossing point bump coincide; the distance between the center of the embossing point bump and the edge of the trimming punch is 30 mm.

3. The embossing and blanking die for aluminum plates according to claim 1, characterized in that, The outer diameter of the embossing point bump is φ6.35; the distance between the embossing point bump and the embossing point pressing block is 0.5 mm.

4. A stamping and blanking die for embossing bumps on an aluminum plate according to claim 1, characterized in that, The outer diameter of the embossing point pressing block is φ30.

Images