Pressing apparatus for thin-walled castings of aluminium alloy

Abstract

This utility model provides a stamping device for pressing thin-walled aluminum alloy castings, relating to the field of casting stamping technology. It includes a base and a top plate. An mounting plate is provided on the upper end of the base, and a lower assembly frame is mounted on the upper end of the mounting plate. A forming top block is located inside the lower assembly frame. The upper end of the top plate is used for connection to a press. An upper assembly frame is mounted on the lower end of the top plate, and a forming punch is located inside the upper assembly frame. A casting blank is placed between the forming punch and the forming top block. Several limiting posts and limiting rings are provided between the base and the top plate. This utility model, by aligning the limiting rings and limiting posts, can limit the distance between the base and the top plate, and between the forming punch and the forming top block, during the stamping process. The distance between the limiting rings and limiting posts can be set as needed, thereby adjusting the thickness of the formed casting blank and preventing deformation of the casting blank during stamping due to the stamping distance being less than the required distance.

Description

Technical Field

[0001] This utility model relates to the field of casting stamping technology, and more specifically, to a stamping device for pressing thin-walled aluminum alloy castings. Background Technology

[0002] In the stamping process of aluminum alloy thin-walled castings, a stamping device is required, which includes a stamping die. The stamping die works in conjunction with a press to perform the stamping operation. Because the shielding plate has a thin wall thickness (3.0mm), it is extremely easy to deform during die casting and trimming, which cannot meet the subsequent machining and customer dimensional requirements. In addition, manual shaping has poor consistency, the pass rate of machined dimensions is low, and appearance damage is unavoidable. This results in a high product defect rate in the stamping process of the existing stamping device, causing material waste. Therefore, we have made improvements to this issue and proposed a stamping device for aluminum alloy thin-walled castings to reduce product deformation during the stamping process, thereby improving the product pass rate. Utility Model Content

[0003] The main purpose of this invention is to provide a stamping device for pressing thin-walled aluminum alloy castings, which can effectively solve the problem that existing stamping devices are prone to material deformation during the stamping of thinner materials.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0005] A stamping device for pressing thin-walled aluminum alloy castings includes a base and a top plate. An mounting plate is provided on the upper end of the base, and a lower assembly frame is mounted on the upper end of the mounting plate. A forming top block is provided inside the lower assembly frame. The upper end of the top plate is used to connect to a press. An upper assembly frame is mounted on the lower end of the top plate, and a forming punch is provided inside the upper assembly frame. A casting blank is placed between the forming punch and the forming top block. A preload spring is provided below the forming top block. Several limiting posts and limiting rings are provided between the base and the top plate.

[0006] Preferably, the base and the top plate are respectively provided with limit posts offset from each other, and the base and the top plate are also respectively provided with limit rings offset from each other, with the upper and lower adjacent limit rings and limit posts aligned.

[0007] Preferably, the lower assembly frame has an assembly groove on its upper side, and the shaping top block is installed in the assembly groove.

[0008] Preferably, the lower assembly frame has an expansion slot on its lower side, and a support plate for supporting the shaping top block is provided inside the expansion slot.

[0009] Preferably, a plurality of preload springs are installed on the upper end of the mounting plate, the preload springs are located between the support plate and the mounting plate, and the support plate is movably connected to the shaping top block through a plurality of positioning rods.

[0010] Preferably, the lower assembly frame is provided with a cutting die on the outer side of its upper end for separating the casting blank.

[0011] Compared with the prior art, the present invention has the following beneficial effects:

[0012] (1) When in use, the top plate is connected to the press, and the height of the top plate can be adjusted, thereby driving the forming punch to press down and cooperate with the forming top block below to stamp the casting blank. The lower assembly frame and the upper assembly frame can be used to install the forming punch and forming top block of the required specifications respectively, so as to meet the processing needs of different products.

[0013] (2) By aligning the position of the limiting ring and the limiting post, the distance between the base and the top plate, and between the forming punch and the forming top block can be limited during the stamping process. The distance between the limiting ring and the limiting post can be set as needed, thereby adjusting the thickness of the casting blank and avoiding the problem of deformation of the casting blank during stamping due to the stamping distance being less than the required distance. It also ensures the forming size and thickness of the casting blank and prevents the casting blank from being thinned due to excessive stamping.

[0014] (3) The forming top block can be installed inside the combination groove through the combination groove, so that the forming top block can be replaced. The forming top block can be set inside the combination groove, so that the forming top block can move within a certain range. With the support of the pre-pressing spring, the forming punch and the forming top block can be pressed against the casting blank at the same time during the stamping process, further improving the stamping stability, improving product quality, and avoiding damage to the product appearance.

[0015] (4) During the stamping process, the edge cutting die can be used to cut the corners of the casting blank, so that the size of the casting blank meets the required size. Through the edge cutting and shaping after die casting, the deformation of the blank meets the requirements of the machining size, and the product qualification rate is improved. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;

[0017] Figure 2 This is a three-dimensional structural schematic diagram of the present invention from another perspective;

[0018] Figure 3 This is a top view of the structure of this utility model;

[0019] Figure 4 for Figure 3 Schematic diagram of the cross-sectional structure at point AA;

[0020] Figure 5This is a three-dimensional structural diagram of the lower-level assembly frame.

[0021] In the diagram: 1. Base; 2. Limiting post; 3. Top plate; 4. Upper assembly frame; 5. Shaping punch; 6. Mounting plate; 7. Lower assembly frame; 701. Assembly slot; 702. Expansion slot; 703. Preload spring; 704. Support plate; 705. Trimming die; 706. Positioning rod; 8. Casting blank; 9. Limiting ring; 10. Shaping top block. Detailed Implementation

[0022] The technical solutions of this utility model will be clearly and completely described below with reference to the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of this utility model.

[0023] like Figures 1 to 5 As shown, the stamping device for pressing thin-walled aluminum alloy castings includes a base 1 and a top plate 3. A mounting plate 6 is provided on the upper end of the base 1, and a lower assembly frame 7 is installed on the upper end of the mounting plate 6. A forming top block 10 is provided inside the lower assembly frame 7. The upper end of the top plate 3 is used to connect with a press. An upper assembly frame 4 is installed on the lower end of the top plate 3. A forming punch 5 is provided inside the upper assembly frame 4. A casting blank 8 is provided between the forming punch 5 and the forming top block 10. A preload spring 703 is provided below the forming top block 10. Several limiting posts 2 and limiting rings 9 are provided between the base 1 and the top plate 3. It should be noted that this application needs to be used in conjunction with a press.

[0024] When in use, the top plate 3 is connected to the press, which allows the height of the top plate 3 to be adjusted, thereby driving the forming punch 5 to press downwards. Together with the forming top block 10 below, the casting blank 8 is stamped and formed. The lower assembly frame 7 and the upper assembly frame 4 can be used to install the forming punch 5 and the forming top block 10 of the required specifications, thereby meeting the processing needs of different products.

[0025] In this embodiment, the base 1 and the top plate 3 are respectively provided with a limiting post 2 offset from each other, and the base 1 and the top plate 3 are also respectively provided with a limiting ring 9 offset from each other, with the upper and lower adjacent limiting rings 9 aligned with the limiting post 2.

[0026] By aligning the limiting ring 9 with the limiting post 2, the distance between the base 1 and the top plate 3, and between the forming punch 5 and the forming top block 10 can be limited during the stamping process. The distance between the limiting ring 9 and the limiting post 2 can be set as needed, thereby adjusting the thickness of the casting blank 8 and avoiding the problem of deformation of the casting blank 8 during stamping due to the stamping distance being less than the required distance. It also ensures the forming size and thickness of the casting blank 8 and prevents the casting blank 8 from being thinned due to over-stamping.

[0027] In this embodiment, a combination groove 701 is provided on the upper side inside the lower assembly frame 7, and the forming top block 10 is installed in the combination groove 701. The forming top block 10 can be installed inside the combination groove 701, thereby realizing the replacement of the forming top block 10. By using the forming top block 10 to be set inside the combination groove 701, the forming top block 10 can move within a certain range. In conjunction with the support of the preload spring 703, the forming punch 5 and the forming top block 10 can be tightly attached to the casting blank 8 at the same time during the stamping process, further improving the stamping stability, improving product quality, and avoiding damage to the product appearance.

[0028] In this embodiment, an expansion slot 702 is provided on the lower side of the lower assembly frame 7, and a support plate 704 for supporting the forming top block 10 is provided inside the expansion slot 702. The support plate 704 can support the forming top block 10 to ensure that the forming top block 10 can be stably stamped in the future.

[0029] In this embodiment, a plurality of preload springs 703 are installed on the upper end of the mounting plate 6. The preload springs 703 are located between the support plate 704 and the mounting plate 6. The support plate 704 is movably connected to the shaping top block 10 through a plurality of positioning rods 706. The positioning rods 706 can limit the position between the support plate 704 and the shaping top block 10 to ensure that they are vertically aligned and to avoid misalignment.

[0030] In this embodiment, a cutting die 705 for separating the casting blank 8 is provided on the outer side of the upper end of the lower assembly frame 7.

[0031] During the stamping process, the edge trimming die 705 can be used to trim the corners of the casting blank 8, so that the size of the casting blank 8 meets the required size. Through the trimming and shaping after die casting, the deformation of the blank meets the requirements of the machining size, thereby improving the product qualification rate.

[0032] The working principle of the stamping device for pressing thin-walled aluminum alloy castings:

[0033] In use, the casting blank 8 is placed above the forming top block 10. Then, the top plate 3 is lowered by starting the external press. During the descent of the top plate 3, the forming punch 5 moves down accordingly. After the forming punch 5 contacts the upper surface of the casting blank 8, under the action of the preload spring 703, the forming top block 10 and the forming punch 5 will simultaneously adhere tightly to the casting blank 8 to ensure stability during subsequent stamping and avoid positional deviation of the casting blank 8 during subsequent stamping.

[0034] Subsequently, the forming punch 5 continues to descend. During the descent of the forming punch 5, it will work with the trimming die 705 to trim the outer side of the casting blank 8. After that, the forming punch 5 continues to descend, and the limiting ring 9 contacts the limiting post 2 to achieve alignment. The limiting ring 9 and the limiting post 2 can limit the thickness of the casting blank 8 during stamping. This can ensure the size of the casting blank 8 while preventing the forming punch 5 and the forming top block 10 from thinning the casting blank 8.

[0035] Finally, the forming punch 5 moves upward, and with the assistance of the preload spring 703, the casting blank 8 formed above the forming top block 10 can be pushed upward to facilitate subsequent material handling.

[0036] The content not described in detail in this document is prior art known to those skilled in the art.

[0037] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating this utility model, and are not intended to limit the implementation of this utility model. For those skilled in the art, other variations or modifications can be made based on the above description. It is impossible to exhaustively list all the implementation methods here. Any obvious variations or modifications derived from the technical solutions of this utility model are still within the protection scope of this utility model.

Claims

1. A press for the pressing of thin-walled castings of aluminium alloys, comprising a base (1) and a top plate (3), characterised in that: The base (1) is provided with an mounting plate (6) at its upper end. The mounting plate (6) is provided with a lower assembly frame (7) at its upper end. The lower assembly frame (7) is provided with a shaping top block (10) inside. The top plate (3) is used to connect to the press at its upper end. The top plate (3) is provided with an upper assembly frame (4) at its lower end. The upper assembly frame (4) is provided with a shaping punch (5) inside. A casting blank (8) is provided between the shaping punch (5) and the shaping top block (10). A preload spring (703) is provided below the shaping top block (10). Several limiting posts (2) and limiting rings (9) are provided between the base (1) and the top plate (3).

2. The apparatus of claim 1, wherein: The base (1) and the top plate (3) are respectively provided with a limiting post (2) offset from each other. The base (1) and the top plate (3) are also respectively provided with a limiting ring (9) offset from each other. The upper and lower adjacent limiting rings (9) are aligned with the limiting post (2).

3. The apparatus of claim 1, wherein: The lower assembly frame (7) has an assembly groove (701) on its upper side, and the shaping top block (10) is installed in the assembly groove (701).

4. The apparatus of claim 3 wherein: The lower assembly frame (7) has an expansion slot (702) on its lower side, and a support plate (704) for supporting the shaping top block (10) is provided inside the expansion slot (702).

5. The apparatus of claim 4 wherein: The mounting plate (6) is equipped with several preload springs (703) at its upper end. The preload springs (703) are located between the support plate (704) and the mounting plate (6). The support plate (704) is movably connected to the shaping top block (10) through several positioning rods (706).

6. The apparatus of claim 2 wherein: The lower assembly frame (7) is provided with a cutting die (705) on the outer side of the upper end for separating the casting blank (8).

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