Dip-coating tool for evanescent mode mold of large lathe bed casting
By designing a large-scale disappearing mold dip coating tool, using a locking mechanism and a lifting mechanism, the problem of difficulty in sinking evenly during the dip coating process of large-scale bed casting molds is solved, and an efficient and stable dip coating process is achieved.
Patent Information
- Application Number
- CN202421892490.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-07
- Publication Date
- 2025-05-27
- Estimated Expiration
- 2034-08-07
AI Technical Summary
The large bed casting disappearing mold mold is difficult to sink evenly due to its large area and small weight during the dip coating process, and it is easy to cause the casting system to break when additional force is applied.
A large-scale disappearing mold dip coating tooling is designed, including a placement rack and a gantry press frame, a locking mechanism is used to fix the foam mold, and the entire tooling is sent to the dip coating pool through the hanging lugs to ensure that the mold sinks evenly.
The uniform sinking of the foam mold during the dip coating process is achieved, which avoids mold breakage and improves the dip coating quality and efficiency.
Smart Images
Figure CN222902583U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to casting molding equipment, in particular to an immersion coating tooling for a lost foam mold of a large bed casting. Background Art
[0002] In lost foam casting, a pattern similar to the structure and size of the casting is made of foam. After being immersed in a refractory bonding coating and dried, it is buried in a special sand box for dry sand molding. After being compacted by three-dimensional micro-vibration and negative pressure, molten metal is poured in to form the casting. The current immersion coating method for lost foam models is multi-pass immersion coating. The entire mold bundle must be pressed down evenly into the coating liquid surface to obtain immersion coating. Due to the large area of the large bed casting mold, the large bed casting mold needs to be pressed down synchronously for overall immersion coating. However, the mold is light in weight and it is difficult to sink evenly under the action of the coating buoyancy. Extra force needs to be applied at the four corners of the mold to make it sink. If the force applied at a single point is too large, the gating system is likely to break. Summary of the Invention
[0003] The utility model provides an immersion coating tooling for a large lost foam mold, the immersion coating process is smooth and easy to operate, and it can ensure that all parts of the lost foam of the bed casting are covered with the coating.
[0004] The utility model adopts the following technical scheme: An immersion coating tooling for a large lost foam mold, used for fixedly installing a workpiece mold to be immersed, includes a placement rack 1 and a gantry pressing frame 2. The placement rack 1 is an "L"-shaped frame body for placing a foam mold 3, and includes a bottom frame and a vertical rod 4. The bottom frame includes a square frame 5 on one side below the vertical rod 4 and a bearing frame 6 connected to the square frame 5 and having a width smaller than that of the square frame 5. A limiting block 5.1 is provided at the intersection of the square frame 5 and the bearing frame 6. A plurality of parallel cross bars are arranged at intervals on the bearing frame 6.
[0005] The gantry press frame 2 is used to carry the placement rack 1, and includes a rectangular bottom frame 7 and vertical frame rods 8. The width and length of the rectangular bottom frame 7 are both greater than the corresponding width and length of the bottom frame of the placement rack 1. At the middle parts of both ends in the length direction of the rectangular bottom frame 7, lifting lugs 9 extending outward are provided through mounting blocks. A plurality of parallel cross bars are arranged at intervals on the rectangular bottom frame 7. Two groups of vertical frame rods 8 are symmetrically arranged on both sides in the length direction of the rectangular bottom frame 7. The height of the vertical frame rods 8 is higher than the height of the vertical rods 4 on the placement rack 1. A locking mechanism is provided at the upper part of the vertical frame rods 8. A cross beam 10 is provided at the top of each group of vertical frame rods 8. Arc-shaped locking stops are respectively provided at the two front ends of the cross beam 10. The locking mechanism includes a bottom plate 12, a handle 13 and a pull ring 14. When locking is required, the holes of the pull ring 14 are respectively sleeved on the locking stops at both ends of the cross beam 10, and then the handle 13 is pressed towards the bottom plate 12. When the handle is completely pressed in place, a force is given to the pull ring to press the locking hook. When unlocking is required, the handle 13 is pulled in the direction away from the bottom plate 12 until the restoring force of the spring is not enough to make the pull ring engage with the locking stop, and then the pull ring 14 is disengaged from the locking stops at both ends of the cross beam 10 to complete the unlocking.
[0006] Preferably, the vertical frame rod 8 is a hollow trough-shaped structure, with round holes provided on both sides. Cross blocks 15 are provided at the round holes. The cross beam 10 can move up and down along the vertical frame rod 8 and be limited in height adjustment on the vertical frame rod 8 to adapt to foam molds 3 of different models on the placement rack 1.
[0007] Specifically, when the cross beam 10 needs to be moved up and down, cross blocks 15 are provided at the round holes at appropriate positions of the hollow trough-shaped vertical frame rod 8. The bottom plate 12 of the locking mechanism on the corresponding vertical frame rod 8 moves to the corresponding position, and the cross beam 10 with a locking hook directly straddles the cross blocks 15.
[0008] Preferably, the distance between a group of vertical frame rods 8 on the side away from the vertical rod 4 on the cross bar is less than the distance of a group of vertical frame rods 8 on the side close to the vertical rod 4, and a pressing block 11 is provided on the mounting block on the side away from the vertical rod 4 and opposite to the lifting lug 9.
[0009] Working principle: When in use, first place the foam mold 3 on the placement rack 1, with one end abutted against the vertical rod 4 of the placement rack 1, then place the placement rack 1 on the gantry press frame 2 and perform lateral limitation by the limit block 5.1. Adjust the cross block 15 on the vertical frame rod 8 to an appropriate height, and the cross block 15 supports the cross beam 10 to an appropriate height. The hole of the pull ring 14 is sleeved on the cross beam 10, and then the handle 13 is pressed towards the bottom plate. When the handle is completely pressed in place, a force is given to the pull ring to press the locking hook. Then, the entire tooling is immersed in the dip coating tank through the lifting lug 9 for dip coating. After dip coating, the gantry press frame 2 is lifted through the lifting lug 9 and lifted out of the dip coating tank. Then, unlock it, and transfer the foam mold together with the placement rack 1 to the drying room for drying treatment.
[0010] Beneficial effects: ① When the present utility model is pressed for dip coating, the foam mold no longer breaks, which not only ensures the dip coating quality but also improves the dip coating efficiency.
[0011] ② The present utility model uses a locking mechanism to fix the foam mold on the placement rack 1 to the gantry press frame 2, which is convenient for locking. Then, the entire tooling is sent to the upper part of the dip coating tank through the lifting lugs, so that the foam mold sinks with the tooling. If the sinking is slow, an external force can be applied to the top of the vertical frame rod 8 of the gantry press frame 2, and a cross block is provided on the vertical frame rod 8 to meet the dip coating requirements of foam molds for large castings of different models. Brief description of the drawings
[0012] Figure 1 It is a schematic structural diagram of the present utility model.
[0013] Figure 2 It is a front view structural schematic diagram of the present utility model.
[0014] Figure 3 It is a top view structural schematic diagram of the present utility model.
[0015] Figure 4 It is a schematic structural diagram of placing the foam mold of the present utility model.
[0016] Figure 5 It is a front view structural schematic diagram of placing the foam mold of the present utility model.
[0017] Figure 6 It is a schematic structural diagram of the vertical frame rod in Embodiment 2 of the present utility model.
[0018] In the figure: placement rack 1, gantry press frame 2, foam mold 3, vertical rod 4, square frame 5, limit block 5.1, bearing frame 6, rectangular bottom frame 7, vertical frame rod 8, lifting lug 9, cross beam 10, pressing block 11, bottom plate 12, handle 13, pull ring 14, cross block 15. Specific embodiments
[0019] The present utility model will be further described below in conjunction with the drawings and embodiments.
[0020] Embodiment 1: As shown in Figure 1 —5, a dip coating tooling for large lost foam molds, used for fixedly installing the workpiece mold to be dip coated, includes a placement rack 1 and a gantry press frame 2. The placement rack 1 is an "L"-shaped frame body for placing the foam mold 3, including a bottom frame and a vertical rod 4. The bottom frame includes a square frame 5 on one side below the vertical rod 4 and a bearing frame 6 connected to the square frame 5 and having a width smaller than that of the square frame 5. A limit block 5.1 is provided at the junction of the square frame 5 and the bearing frame 6, and a plurality of parallel cross bars are arranged at intervals on the bearing frame 6.
[0021] The gantry pressing frame 2 is used to carry the placing rack 1 and includes a rectangular bottom frame 7 and vertical frame rods 8. The width and length of the rectangular bottom frame 7 are both greater than the corresponding width and length of the bottom frame of the placing rack 1. At the middle parts of both ends in the length direction of the rectangular bottom frame 7, lifting lugs 9 extending outward are arranged through mounting blocks. A plurality of parallel cross bars are arranged at intervals on the rectangular bottom frame 7. Two groups of vertical frame rods 8 are symmetrically arranged on both sides in the length direction of the rectangular bottom frame 7. The height of the vertical frame rods 8 is higher than the height of the vertical rods 4 on the placing rack 1. A locking mechanism is arranged on the upper part of the vertical frame rods 8. A cross beam 10 is arranged at the top of each group of vertical frame rods 8. Arc-shaped locking stops are respectively arranged at the two front ends of the cross beam 10. The locking mechanism includes a bottom plate 12, a handle 13 and a pull ring 14. When locking is required, the holes of the pull ring 14 are respectively sleeved on the locking stops at both ends of the cross beam 10, and then the handle 13 is pressed towards the bottom plate 12. When the handle is completely pressed in place, a force for pressing and locking the hook is given to the pull ring. When unlocking is required, the handle 13 is pulled in the direction away from the bottom plate 12 until the restoring force of the spring is not enough to make the pull ring engage with the locking stop, and then the pull ring 14 is disengaged from the locking stops at both ends of the cross beam 10 to complete unlocking.
[0022] Embodiment 2: As Figure 1 -6 shows, a large-sized lost foam casting die dipping tooling for fixedly installing a workpiece die to be dipped, includes a placing rack 1 and a gantry pressing frame 2. The placing rack 1 is an "L"-shaped frame body for placing a foam die 3 and includes a bottom frame and vertical rods 4. The bottom frame includes a square frame 5 on one side below the vertical rods 4 and a bearing frame 6 connected to the square frame 5 and having a width smaller than that of the square frame 5. A limiting block 5.1 is arranged at the intersection of the square frame 5 and the bearing frame 6. A plurality of parallel cross bars are arranged at intervals on the bearing frame 6.
[0023] The gantry pressing frame 2 is used to carry the placing rack 1 and includes a rectangular bottom frame 7 and vertical frame rods 8. The width and length of the rectangular bottom frame 7 are both greater than the corresponding width and length of the bottom frame of the placing rack 1. At the middle parts of both ends in the length direction of the rectangular bottom frame 7, lifting lugs 9 extending outward are arranged through mounting blocks. A plurality of parallel cross bars are arranged at intervals on the rectangular bottom frame 7. Two groups of vertical frame rods 8 are symmetrically arranged on both sides in the length direction of the rectangular bottom frame 7. The distance between the group of vertical frame rods 8 on the side far from the vertical rods 4 on the cross bar is smaller than the distance of the group of vertical frame rods 8 on the side close to the vertical rods 4, and a pressing block 11 is arranged on the mounting block on the side far from the vertical rods 4 and opposite to the lifting lug 9.
[0024] The height of the vertical frame rod 8 is higher than that of the vertical rod 4 on the placement rack 1. The vertical frame rod 8 is a hollow trough-shaped structure with round holes on both sides, and cross blocks 15 are arranged at the round holes. The cross beam 10 can move up and down along the vertical frame rod 8 and be limited in height on the vertical frame rod 8 to adapt to foam molds 3 of different models on the placement rack 1. A locking mechanism is arranged at the upper part of the vertical frame rod 8. A cross beam 10 is arranged at the top of each group of vertical frame rods 8, and arc-shaped locking blocks are respectively arranged at the two front ends of the cross beam 10. The locking mechanism includes a bottom plate 12, a handle 13 and a pull ring 14. Specifically, when it is necessary to move the cross beam 10 up and down, the cross block 15 is arranged at the round hole at a suitable position of the hollow trough-shaped vertical frame rod 8, and the bottom plate 12 of the locking mechanism on the corresponding vertical frame rod 8 moves to the corresponding position. The cross beam 10 with a locking hook directly straddles the cross block 15. When locking is required, the holes of the pull ring 14 are respectively sleeved on the locking blocks at both ends of the cross beam 10, and then the handle 13 is pressed towards the bottom plate 12. When the handle is fully pressed in place, a force is given to the pull ring to press the locking hook. When unlocking is required, the handle 13 is pulled in the direction away from the bottom plate 12 until the restoring force of the spring is not enough to make the pull ring engage with the locking block, and then the pull ring 14 is disengaged from the locking blocks at both ends of the cross beam 10 to complete the unlocking.
Claims
1. A large bed casting lost foam mold dip coating tooling, used for fixing and installing the workpiece mold to be dip coated, comprising a placement frame (1) and a gantry press frame (2), characterized in that: The placement frame (1) is an "L"-shaped frame for placing the foam mold (3), comprising a bottom frame and a vertical rod (4), wherein the bottom frame comprises a square frame (5) located on one side below the vertical rod (4) and a bearing frame (6) connected to the square frame (5) and having a width smaller than that of the square frame (5), a limit block (5.1) is provided at the junction of the square frame (5) and the bearing frame (6), and a plurality of parallel horizontal rods are arranged in sequence at intervals on the bearing frame (6); The gantry pressing frame (2) is used to carry the placement rack (1), and comprises a rectangular base frame (7) and vertical frame rods (8). The width and length of the rectangular base frame (7) are both greater than the corresponding width and length of the base frame of the placement rack (1). The middle parts of the two ends of the rectangular base frame (7) in the length direction are provided with outwardly extending ears (9) through mounting blocks. The rectangular base frame (7) is provided with a plurality of parallel cross bars at intervals. Two groups of vertical frame rods (8) are symmetrically arranged on both sides of the rectangular base frame (7) in the length direction. The height of the vertical frame rods (8) is higher than the height of the vertical rods (4) on the placement rack (1). A locking mechanism is provided on the upper part of the vertical frame rods (8). A cross beam (10) is provided on the top of each group of vertical frame rods (8). The locking mechanism comprises a bottom plate (12), a handle (13) and a pull ring (14).
2. A large bed casting lost foam mold dipping tooling according to claim 1, characterized in that: The vertical frame rod (8) is a hollow groove-shaped structure with round holes on both sides. Cross blocks (15) are arranged at the round holes. The cross beam (10) can move up and down along the vertical frame rod (8) and can be adjusted in height at the upper limit position on the vertical frame rod (8).
3. A large bed casting lost foam mold dipping tooling according to claim 1 or 2, characterized in that: Arc-shaped locking stops are respectively provided at the two front ends of the cross beam (10).
4. A large bed casting lost foam mold dipping tooling according to claim 1 or 2, characterized in that: The distance between a group of vertical frame rods (8) on the side away from the vertical rod (4) and on the crossbar is smaller than the distance between a group of vertical frame rods (8) on the side close to the vertical rod (4), and a pressing block (11) is provided on the mounting block on the side away from the vertical rod (4) and on the side opposite to the lifting ear (9).