Anti-deformation casting positioning and pressing device

Abstract

This invention discloses a positioning and pressing device for anti-deformation castings. A movable upper plate and a fixed lower plate are connected via a flipping control assembly. Support columns are mounted on the fixed lower plate, and conformal support blocks are mounted on its sides. A clamping column and a clearance groove are mounted on the movable upper plate, and conformal clamping blocks are mounted on its sides. This invention can position, support, and clamp the casting blank, and remove exposed runners from the casting. It effectively solves the problem of not being able to manually remove runners from the casting and effectively solves the problem of casting deformation caused by runner removal. This invention has low investment costs, eliminating the need for costly trimming dies and hydraulic presses, and does not require additional production space. It is also convenient to use, easy to disassemble, and facilitates subsequent maintenance and parts replacement.

Description

Technical Field

[0001] This invention relates to a machining fixture, specifically to a casting press-fitting device used in the production of aluminum alloy die castings. Background Technology

[0002] After die casting, aluminum alloy die castings consist mainly of a blank, gating system, and slag pocket, among other structures. Only the blank needs to be retained; the gating system and slag pocket need to be removed for recycling. Traditional removal methods are mainly of two types: one is manual removal, where operators use a hammer to knock away the gating system and slag pocket when the casting comes off the production line; the other is edge-trimming die removal. The edge-trimming die structure is designed according to the casting structure, with trimming edges at the connection between the gating system and the blank body. The edge-trimming die is mounted on a hydraulic press, which pushes the die to remove the gating system.

[0003] Both of the above-mentioned methods for removing runners can effectively remove runners from aluminum alloy die castings, but each has its limitations. For the first method, "manual removal," because the runner has a certain thickness, a considerable force is required to break and remove it. Since the casting is not completely fixed, some thin-walled and flat die castings are easily affected, causing deformation. Furthermore, manual runner removal requires the operator to hold the product in one hand and a hammer in the other, making it difficult for larger or heavier castings. For the second method, "edge-cutting mold removal," in addition to the professional design and fabrication of the edge-cutting mold, it also requires the investment of a hydraulic press and the planning of processing equipment space. The installation and debugging of the mold and equipment require time and cost, making this runner removal method a high-cost investment. Summary of the Invention

[0004] The purpose of this invention is to overcome the shortcomings of the prior art and provide a deformation-preventing casting positioning and pressing device that can prevent casting deformation and position and press castings.

[0005] To achieve the above objectives, the present invention employs the following technical solution: a positioning and pressing device for anti-deformation castings, comprising a movable upper plate and a fixed lower plate, wherein the movable upper plate and the fixed lower plate are connected by a flipping control assembly, a support column is mounted on the fixed lower plate, a conforming support block is mounted on the side of the fixed lower plate, a pressing column and a clearance groove are mounted on the movable upper plate, and a conforming pressing block corresponding to the position of the conforming support block is mounted on the side of the movable upper plate.

[0006] The flipping control assembly includes a first fixing block and a second fixing block mounted on the edge of the fixed lower plate, and a first rotating bushing and a second rotating bushing mounted on the edge of the movable upper plate. A rotating shaft connects the first rotating bushing and the second rotating bushing. The first fixing block is connected to the first rotating bushing, and the second fixing block is connected to the second rotating bushing. The fixed lower plate has threaded holes and is mounted on the worktable. The clearance slots are either circular or square in shape. A central support column is mounted on the fixed lower plate, between the support column and the first fixing block, and the position of the central support column corresponds to the clearance slot.

[0007] The movable upper plate is equipped with a handle, and the fixed lower plate is equipped with a locking block corresponding to the position of the handle. The locking block has an L-shaped structure, and the locking block and the fixed lower plate are slidably connected through two connecting blocks with round holes. The connecting blocks and the fixed lower plate are fixedly connected, and the locking block and the connecting blocks are clearance-fitted to facilitate smooth sliding of the locking block.

[0008] Compared with existing technologies, this invention has the following advantages: The casting is placed on a fixed lower plate. Based on the support columns and conformal support blocks on the fixed lower plate, which provide support and positioning, the blank of the casting is positioned accordingly, ensuring accurate placement and preventing displacement during operation. After the casting is placed, the movable upper plate is flipped towards the fixed lower plate to close the cover. During closing, the clamping columns and conformal clamping blocks on the movable upper plate contact and press against the upper surface of the blank, with local protrusions on the blank corresponding to clearance grooves on the movable upper plate. After closing, the blank is located inside the device and is fixed, while the sprue is exposed outside. At this time, a hammer is used to strike the sprue, separating it from the blank. Because the blank is fixed by the device, it will not deform under force when the sprue is struck, thus achieving the function of removing the sprue and preventing deformation.

[0009] This invention provides positioning, support, and clamping for the blank of a casting. A tool hammer is then used to remove the exposed runners. This effectively solves the problem of removing runners by hand due to the large size and weight of the casting, and also effectively addresses the issue of deformation in some thin-walled and flat castings caused by runner removal. This invention has low investment costs, eliminating the need for expensive trimming dies and hydraulic presses, and requires minimal production space. It is also convenient to use, easy to disassemble, and facilitates subsequent maintenance and parts replacement. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the structure and assembly of the present invention.

[0011] Figure 2 for Figure 1 A schematic diagram of the structure of the movable upper plate.

[0012] Figure 3 for Figure 1 A schematic diagram of the fixed lower plate in the middle.

[0013] Figure 4 This is a schematic diagram of the present invention in use (with the casting already placed).

[0014] Figure 5 This is a schematic diagram of the present invention in the closed state (with the casting already placed).

[0015] Figure 6 This is a schematic diagram of the invention in the open state (after the gating system of the casting has been removed). Detailed Implementation

[0016] The specific embodiments of the present invention will be further described in detail below with reference to the accompanying drawings, but the present invention is not limited to these embodiments. In the description of the present invention, it should be noted that the terms "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0017] Reference Figures 1 to 6 As can be seen, the anti-deformation casting positioning and pressing device of the present invention, applied to the production of aluminum alloy die castings, includes a movable upper plate 16 (movable) and a fixed lower plate 10 (fixed). The movable upper plate 16 and the fixed lower plate 10 are connected by a flip control assembly. A support column 7 is installed on the fixed lower plate 10 (front side). A conforming support block 11 is installed on the (front) side of the fixed lower plate 10. Several pressing columns 2 and several clearance grooves 3 are installed on the movable upper plate 16 (back side, i.e., the surface opposite to the fixed lower plate). A conforming pressing block 15 corresponding to the position of the conforming support block 11 is installed on the (front) side of the movable upper plate 16.

[0018] The clamping column 2 and the conformal clamping block 15 are detachably connected to the movable upper plate 16 by fastening bolts, facilitating later maintenance and replacement. The clearance groove 3 has shapes such as circular and square, and corresponds to the local protrusions of the blank 18 to prevent uneven force on the blank 18 and extrusion deformation after the movable upper plate 16 and the fixed lower plate 10 are closed. The flipping control assembly includes a first fixing block 5 and a second fixing block 12 mounted on the side of the fixed lower plate (left side), and a first rotating bushing 4 (fixed connection) and a second rotating bushing 13 (arc-shaped sliding connection) mounted on the side of the movable upper plate (right side). A rotating shaft 14 connects the first rotating bushing 4 and the second rotating bushing 13 (forming a sliding connection). The first fixing block 5 is connected to the first rotating bushing 4 (arc-shaped sliding connection), and the second fixing block 12 is connected to the second rotating bushing 13 (fixed connection). The first fixing block 5 and the second fixing block 12 are detachably connected to the fixed lower plate 10 by fastening bolts. A middle support column 19 is installed on the fixed lower plate 10 (on the front) and between the support column 7 and the first fixed block 5. The position of the middle support column 19 corresponds to one of the clearance slots 3.

[0019] The fixed lower plate 10 has several threaded holes 6, which are fixed to the worktable by bolts. After die casting, the worktable at the casting unloading position can be installed according to the size. A handle 1 is mounted on the left side of the movable upper plate 16, and a locking block 9 (and connecting block 8) corresponding to the handle position is mounted on the right side of the fixed lower plate 10. The locking block 9 is L-shaped, and its connection with the connecting block 8 is cylindrical. The locking block 9 and the fixed lower plate 10 are slidably connected by two connecting blocks 8 with round holes. The connecting block 8 is fixedly connected to the fixed lower plate 10, while the locking block 9 and the connecting block 8 are clearance-fitted to facilitate smooth sliding of the locking block 9. The handle 1 is cylindrical for easy gripping by the operator and is used to rotate the movable upper plate 16 relative to the fixed lower plate 10. The conformal clamping block 15 is designed based on the structural characteristics of the connection position between the blank 18 and the gating 17. After the cover is closed, it contacts the plane of the upper surface of the blank, providing clamping and limiting functions to ensure uniform clamping force on the blank. The support column 7 and the conformal support block 11 are detachably connected to the fixed lower plate 10 by fastening bolts. The conformal support block 11 is designed based on the structural characteristics of the connection position between the blank 18 and the gating 17, providing support and limiting functions.

[0020] The working principle of this invention is as follows: The lower plate is installed on the worktable using fastening bolts through threaded holes 6 on the lower plate 10, ensuring the lower plate is fixed. Simultaneously, the handle 1 is pushed to rotate the upper plate 16 to the left, opening the device and facilitating the placement of the casting (including the blank 18 and the gating system 17). After the casting is completed, it is then... Figure 4 As shown, the operator places the casting on the fixed lower plate 10. When placing the casting, the blank 18 is positioned according to the location of the support columns 7 and conformal support blocks 11 on the fixed lower plate 10, ensuring accurate placement of the blank 18 and preventing displacement during operation. After the casting is placed, the operator holds the handle 1 and rotates the movable upper plate 16 to the right towards the fixed lower plate 10 to close the cover. During closing, the clamping columns 2 and conformal clamping blocks 15 on the movable upper plate 16 contact and clamp the upper surface of the blank 18. The protruding parts of the blank 18 correspond to the clearance grooves 3 on the movable upper plate 16 for clearance. Simultaneously, the operator holds the L-shaped locking block 9 and rotates it to contact the movable upper plate 16, completing the locking action. Figure 5 As shown. After the device is closed, the blank 18 is located inside the device and is in a fixed state, while the sprue 17 is exposed outside the device. At this time, the operator uses a hammer to strike the sprue 17, causing the sprue 17 to separate from the blank 18. Since the blank 18 is fixed by the device, it will not deform under force when the sprue 17 is struck, thus achieving the function of removing the sprue and preventing deformation. After the sprue 17 is removed, first flip the locking block 9 outward, then hold the handle 1 and flip the movable upper plate 16 to the left to open it, remove the blank 18, and complete the entire operation. Figure 6 As shown.

[0021] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A device for positioning and pressing a cast part against a mold, comprising a movable upper plate and a fixed lower plate, characterized in that: The movable upper plate and the fixed lower plate are connected by a flip control assembly. A support column is installed on the fixed lower plate, and a conformal support block is installed on the side of the fixed lower plate. A clamping column and a clearance groove are installed on the movable upper plate, and a conformal clamping block corresponding to the position of the conformal support block is installed on the side of the movable upper plate.

2. The strain relief cast positioning press device of claim 1, wherein: The flipping control assembly includes a first fixing block and a second fixing block mounted on the side of the fixed lower plate, and a first rotating bushing and a second rotating bushing mounted on the side of the movable upper plate. A rotating shaft connects the first rotating bushing and the second rotating bushing. The first fixing block is connected to the first rotating bushing, and the second fixing block is connected to the second rotating bushing.

3. A strain relief cast positioning press device according to claim 1 or 2, wherein: The fixed lower plate has threaded holes and is mounted on the workbench.

4. The strain-free casting positioning press device of claim 3, wherein: The shapes of the air-avoiding grooves are either circular or square.

5. The strain-free casting positioning press device of claim 3, wherein: The movable upper plate is equipped with a handle, and the fixed lower plate is equipped with a locking block corresponding to the position of the handle.

6. The strain-free casting positioning press device of claim 5, wherein: The locking block has an L-shaped structure. The locking block and the fixed lower plate are slidably connected through two connecting blocks with round holes. The connecting blocks and the fixed lower plate are fixedly connected. The locking block and the connecting blocks are clearance fit to facilitate smooth sliding of the locking block.

7. The strain relief cast positioning press device of claim 4, wherein: A middle support column is installed on the fixed lower plate and between the support column and the first fixed block. The position of the middle support column corresponds to the clearance groove.

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