Aluminum casting shaping apparatus

Abstract

This utility model discloses a forming device for cast aluminum parts, comprising a frame, an upper fixed plate, a lower fixed plate, a lower pressure plate, an upper pressure plate, a shim strip, positioning stops, a connecting plate, an adjustable pressure shaft, and a downward pressure drive device. Several positioning stops are distributed on the lower pressure plate, forming a limiting area adapted to the shape of the cast aluminum part to be formed. The shim strip is located within the limiting area, and the adjustable pressure shaft is vertically arranged on the connecting plate. This utility model has a reasonable structural design. Several positioning stops are arranged on the lower pressure plate according to the shape of the cast aluminum part, forming a limiting area that matches the shape of the cast aluminum part, achieving precise positioning. Within the area, the shim strip can be flexibly placed and the position and length of the adjustable pressure shaft can be adjusted according to the deformation position of the cast aluminum part. The adjustable pressure shaft can descend with the downward pressure drive device to apply targeted pressure to the local area of ​​the cast aluminum part, improving the overall flatness of the cast aluminum part and achieving a good forming effect.

Description

Technical Field

[0001] This utility model relates to the field of shaping equipment technology, and in particular to a shaping equipment for cast aluminum parts. Background Technology

[0002] In the mass production of medium and large-sized cast aluminum parts, slight geometric errors such as warping or bending often occur due to factors such as casting stress, demolding deformation, and subsequent heat treatment distortion. To ensure assembly accuracy, the traditional approach is to add manual hammering, flame straightening, or simple mechanical pressing processes after cleaning the castings. However, the above methods have the following shortcomings.

[0003] 1. Manual hammering: This method is labor-intensive, produces poor shaping consistency, and easily leaves hammer marks on the surface of the casting; it is highly dependent on the operator's experience, and the batch quality fluctuates significantly.

[0004] 2. Flame straightening: This requires local heating with an oxy-acetylene flame, which consumes a lot of energy, produces a lot of smoke and dust, poses a fire risk, and can easily cause secondary thermal deformation on thin-walled or complex-profile castings.

[0005] 3. Simple mechanical pressing: The common structure is a single-point hydraulic press or a spiral press, which relies solely on two flat plates to apply pressure to the entire casting. Due to the lack of positioning and elevation support that matches the shape of the casting, local deformation is easily "transferred" to uncontrolled areas during pressing, resulting in over-correction or the creation of new warping, making it difficult to guarantee the shaping effect. Utility Model Content

[0006] To address the aforementioned shortcomings, the purpose of this utility model is to provide a forming device for cast aluminum parts with a reasonable structural design and good forming effect.

[0007] To achieve the above objectives, the technical solution provided by this utility model is as follows:

[0008] A forming device for cast aluminum parts includes a frame, an upper fixed plate, a lower fixed plate, a lower pressure plate, an upper pressure plate, a shim strip, positioning stops, a connecting plate, an adjustable pressure shaft, and a downward pressure drive device. The lower fixed plate is mounted on the frame, and a light shaft is provided at the edge of the lower fixed plate. The upper fixed plate is fixed to the upper end of the light shaft. The lower pressure plate is fixed on the lower fixed plate and is movably mounted on the light shaft via a linear bearing. The downward pressure drive device is mounted on the upper fixed plate and can drive the upper pressure plate to move up and down relative to the lower pressure plate. The connecting plate is mounted on the upper pressure plate. Several positioning stops are distributed on the lower pressure plate and form a limiting area adapted to the shape of the cast aluminum part to be formed. The shim strip is located within the limiting area. The adjustable pressure shaft is vertically mounted on the connecting plate.

[0009] In a preferred embodiment of this invention, the downward pressure driving device is a hydraulic cylinder. The cylinder body is vertically mounted on the upper fixed plate, and the upper fixed plate has an opening through which the piston rod of the hydraulic cylinder passes. The piston rod of the hydraulic cylinder passes through the opening and connects to the downward pressure plate. The hydraulic cylinder, in conjunction with a hydraulic system, provides stable and settable pressure and holding time, ensuring the shaping effect.

[0010] In a preferred embodiment of this invention, the connecting plate has mounting holes evenly distributed in an array to meet the assembly requirements of the adjustable pressure shaft at different positions.

[0011] In a preferred embodiment of this invention, the adjustable pressure shaft includes a fixed base, an adjusting shaft, and a rubber block. The fixed base has a fixing hole corresponding to the mounting hole at its periphery, and an adjusting screw hole at its center. The upper part of the adjusting shaft has a threaded portion that matches the adjusting screw hole. The rubber block is located at the lower end of the adjusting shaft. The overall length of the adjustable pressure shaft can be adjusted to the desired size by rotating the adjusting shaft. Applying pressure with the rubber block reduces the risk of surface indentations.

[0012] As a preferred embodiment of this utility model, the lower pressure plate is provided with evenly distributed positioning holes in an array to meet the assembly requirements of the positioning stops at different positions.

[0013] In a preferred embodiment of this invention, the positioning stop is L-shaped, and its bottom has an assembly hole that matches the positioning hole. It can be fixed to the positioning hole with screws. The positioning stop forms a right-angle positioning on its vertical surface, resulting in good positioning performance. Furthermore, it can be adjusted to fit positioning holes in different positions, allowing for quick assembly into limiting cavities of different shapes, and is compatible with regular rectangular or irregularly shaped castings.

[0014] In a preferred embodiment of this invention, a lower limiting seat is provided at the edge of the lower fixing plate, and a limiting screw is provided on the lower limiting seat. A upper limiting seat is provided on the upper pressure plate corresponding to the lower limiting seat. The lowering stroke is adjusted by the limiting screw to prevent over-application of the hydraulic cylinder, which could lead to over-correction or damage to the casting.

[0015] As a preferred embodiment of this utility model, the cross-sectional shape of the raised strip is square, which provides good support stability.

[0016] The beneficial effects of this utility model are as follows: The structure of this utility model is reasonable. Several positioning stops are arranged on the lower pressure plate according to the shape of the cast aluminum part to form a limiting area that matches the shape of the cast aluminum part, so as to achieve precise positioning. Within the area, shims can be flexibly placed and the position and length of the adjustable pressure shaft can be adjusted according to the deformation position of the cast aluminum part. The adjustable pressure shaft can be lowered with the lower pressure drive device to apply targeted pressure to the local part of the cast aluminum part, improve the overall flatness of the cast aluminum part, and achieve good shaping effect. Attached Figure Description

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

[0018] Figure 2 This is a schematic diagram of the upper three-dimensional structure of this utility model.

[0019] Figure 3 This is an exploded structural diagram of the adjustable pressure shaft in this utility model.

[0020] Figure 4 This is a schematic diagram of the working structure of this utility model. Detailed Implementation

[0021] Example: See Figure 1 , Figure 2 and Figure 3 The present invention provides a forming device for cast aluminum parts, which includes a frame 1, an upper fixed plate 2, a lower fixed plate 3, a lower pressure plate 4, an upper pressure plate 5, a shim 6, a positioning stop 7, an adjustable pressure shaft 8, a connecting plate 9, and a lower pressure drive device 10.

[0022] The lower fixing plate 3 is fixedly mounted on the top surface of the frame 1 by screws.

[0023] The lower fixing plate 3 has a square outline, and an optical axis 11 is vertically fixed at the corner edge of the lower fixing plate 3. The upper fixing plate 2 has a square outline, and the corner edge of the upper fixing plate 2 is fixed to the upper end of the optical axis 11 by screws.

[0024] The lower pressure plate 4 is horizontally fixed to the upper surface of the lower fixing plate 3 by screws.

[0025] The upper pressure plate 5 is movably mounted on the optical axis 11 via a linear bearing, and the lower pressure drive device 10 is mounted on the upper fixed plate 2, capable of driving the upper pressure plate 5 to move up and down relative to the lower pressure plate 4. Preferably, the lower pressure drive device 10 is a hydraulic cylinder, the cylinder body of which is vertically mounted on the upper fixed plate 2. The upper fixed plate 2 has an opening through which the piston rod of the hydraulic cylinder passes, and the piston rod passes through the opening to connect with the lower pressure plate 4. The hydraulic cylinder, in conjunction with a hydraulic system, provides stable and settable pressure and holding time, ensuring the shaping effect.

[0026] The connecting plate 9 is fixedly mounted on the lower surface of the upper pressure plate 5 by screws.

[0027] Several positioning stops 7 are distributed on the lower pressure plate 4, forming a limiting area that matches the shape of the cast aluminum part to be shaped. Specifically, positioning holes are evenly distributed on the lower pressure plate 4 in an array to meet the assembly requirements of the adjustable pressure shaft 8 at different positions. The positioning stops 7 are L-shaped, and the bottom of the positioning stops 7 has an assembly hole that matches the positioning holes. They can be fixed to the positioning holes with screws. The vertical surface of the positioning stops 7 forms a right-angle positioning, which has a good positioning effect and can be adjusted to match the positioning holes at different positions. It can be quickly assembled into limiting cavities of different shapes, compatible with regular rectangular or irregular irregular-shaped castings.

[0028] The shim strip 6 is located within the limiting area. The cross-sectional shape of the shim strip 6 is preferably square, providing good support stability.

[0029] The adjustable pressure shaft 8 is vertically mounted on the connecting plate 9. Specifically, mounting holes are evenly distributed in an array on the connecting plate 9. The adjustable pressure shaft 8 includes a fixed base 81, an adjusting shaft 2, and a rubber block 83. The fixed base 81 has fixing holes corresponding to the mounting holes on its periphery, and an adjustment screw hole in the middle. The upper part of the adjusting shaft 2 has a threaded portion that matches the adjustment screw hole. The rubber block 83 is located at the lower end of the adjusting shaft 2. Applying pressure with the rubber block 83 can reduce the risk of surface indentation. The overall length of the adjustable pressure shaft 8 can be adjusted to the required size by rotating the adjusting shaft 2. A locking nut 84 can also be screwed onto the threaded portion. That is, after the adjusting shaft 2 is adjusted, the locking nut 84 is tightened to press against the connection between the adjusting shaft 2 and the threaded portion to achieve the purpose of locking.

[0030] Preferably, a lower limiting seat 31 is provided at the edge of the lower fixing plate 3, and a limiting screw 32 is provided on the lower limiting seat 31. The upper pressure plate 5 is provided with a limiting upper seat 33 corresponding to the position of the lower limiting seat 31. The downward stroke is adjusted by the limiting screw 32 to prevent the hydraulic cylinder from over-rushing, which could lead to over-correction or damage to the casting.

[0031] When working, see Figure 4With the upper left and lower right corners of the cast aluminum part 12 slightly upturned, several positioning stops 7 are arranged on the lower pressure plate 4 according to the shape of the cast aluminum part, forming a limiting area that matches the shape of the cast aluminum part. The shim 6 is placed at a 45-degree angle within the limiting area, with one end of the shim 6 aligned with the lower left corner of the limiting area and the other end aligned with the upper right corner of the limiting area. Then, the cast aluminum part 12 is placed on the limiting area, and the shim 6 supports the connection line between the lower left and upper right corners of the cast aluminum part 12. The adjustable pressure shaft 8 is aligned with the upper left and lower right corners of the cast aluminum part 12, and the length of the adjustable pressure shaft 8 is adjusted according to the height of the upper left and lower right corners of the cast aluminum part. The downward pressure drive device 10 drives the lower pressure plate 4 and the connecting plate 9 to move downward. The adjustable pressure shaft 8 is used to apply targeted pressure to the upper left and lower right corners of the cast aluminum part. When it moves to the predetermined position, the upper limit seat 33 presses against the limit screw 32 of the lower limit seat 31 to limit it and maintain the pressure for a predetermined time, such as ten seconds. After this, the shaping of the cast aluminum part is completed. The operation is simple and convenient.

[0032] Based on the disclosure and teachings of the above specification, those skilled in the art can make changes and modifications to the above embodiments. Therefore, this utility model is not limited to the specific embodiments disclosed and described above, and some modifications and changes to this utility model should also fall within the protection scope of the claims of this utility model. Furthermore, although some specific terms are used in this specification, these terms are only for convenience of explanation and do not constitute any limitation on this utility model. Devices with other structures obtained by adopting the same or similar structures as described in the above embodiments of this utility model are all within the protection scope of this utility model.

Claims

1. A forming device for cast aluminum parts, comprising a frame, characterized in that, It also includes an upper fixed plate, a lower fixed plate, a lower pressure plate, an upper pressure plate, a shim strip, positioning stops, a connecting plate, an adjustable pressure shaft, and a downward pressure drive device. The lower fixed plate is mounted on the frame, and an optical axis is provided at the edge of the lower fixed plate. The upper fixed plate is fixed to the upper end of the optical axis. The lower pressure plate is fixed to the lower fixed plate. The upper pressure plate is movably mounted on the optical axis via a linear bearing. The downward pressure drive device is mounted on the upper fixed plate and can drive the upper pressure plate to move up and down relative to the lower pressure plate. The connecting plate is mounted on the upper pressure plate. Several positioning stops are distributed on the lower pressure plate and form a limiting area that matches the shape of the cast aluminum part to be shaped. The shim strip is located within the limiting area. The adjustable pressure shaft is vertically mounted on the connecting plate.

2. The aluminum casting forming equipment according to claim 1, characterized in that, The downward pressure driving device is a hydraulic cylinder. The cylinder body is vertically mounted on the upper fixed plate. The upper fixed plate has an opening through which the piston rod of the hydraulic cylinder passes. The piston rod of the hydraulic cylinder passes through the opening and connects to the downward pressure plate.

3. The aluminum casting forming equipment according to claim 1, characterized in that, The connecting plate has mounting holes evenly distributed.

4. The aluminum casting forming equipment according to claim 3, characterized in that, The adjustable pressure shaft includes a fixed base, an adjusting shaft, and a rubber block. The fixed base has a fixing hole at its periphery that corresponds to the mounting hole, and an adjusting screw hole at the middle of the fixed base. The upper part of the adjusting shaft has a threaded part that matches the adjusting screw hole, and the rubber block is located at the lower end of the adjusting shaft.

5. The aluminum casting forming equipment according to claim 1, characterized in that, The lower pressure plate has evenly distributed positioning holes.

6. The aluminum casting forming equipment according to claim 5, characterized in that, The positioning stop is L-shaped, and the bottom of the positioning stop is provided with an assembly hole that matches the positioning hole.

7. The aluminum casting forming equipment according to any one of claims 1-6, characterized in that, The lower fixing plate is provided with a lower limiting seat at its edge, and the lower limiting seat is provided with a limiting screw. The upper pressure plate is provided with an upper limiting seat at the position corresponding to the lower limiting seat.

8. The aluminum casting forming equipment according to any one of claims 1-6, characterized in that, The cross-sectional shape of the raised strip is square.

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