Axle housing resin sand core blowing hardening mechanism

Abstract

The utility model relates to the technical field of resin sand core hardening, in particular to an axle housing resin sand core blowing hardening mechanism. According to the technical scheme, the device comprises a bottom plate, a bottom die and a pressing die, a pair of supporting frames are fixed to the upper end of the bottom plate, the bottom plate is fixed to the upper ends of the supporting frames, the pressing die is clamped to the upper end of the bottom die, and a sealing plate is fixed to the upper end of the pressing die through a fixing assembly; butt-joint pipes are fixed to the positions, corresponding to the ends of the shunt pipes, of the upper end of the bottom die, the ends of the shunt pipes are inserted into the butt-joint pipes, and gas injection pipes are fixed to the upper end of the shunt seat. According to the utility model, injected gas is injected into the mold cavity through a plurality of positions by utilizing the shunting pipe, the gas in the mold cavity is uniformly injected, the hardening of a long-strip-shaped axle housing sand core is facilitated, after the sealing plate is covered, the sealing plate can be quickly fixed by utilizing the rotation of the rotating plate, the operation is simpler, and the production efficiency is improved in frequent demolding operation. And the working efficiency can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of resin sand core hardening, in particular to an air blowing hardening mechanism for a bridge housing resin sand core. Background Art

[0002] Air blowing hardening of resin sand cores for bridge housings is a commonly used casting process used to manufacture cavities or channels in castings of complex shapes. During the casting process, the resin sand cores for bridge housings are placed at predetermined positions of the castings, and then compressed air is injected into the core through the vents in the core box. The compressed air passes through the channels inside the core, fitting the resin sand cores tightly to the inner wall of the casting. The compressed air continues to be blown through the channels inside the core, causing the resin to solidify and harden rapidly. The hardened resin sand cores will maintain their shape and structure to form the required cavities or channels in the castings.

[0003] During the entire processing process, the injection pipe is usually set at the center of the bridge housing. However, in the sand core molding process of some longer workpieces, a single injection port will cause uneven injection of gas, which is not conducive to solidification molding. In addition, during operation, a complex fixing structure is often required for the sealing plate connected to the injection pipe to ensure the stability of the connection, which requires a lot of operation time. During batch processing, the frequent loading and unloading of materials seriously reduces work efficiency. Utility Model Content

[0004] The utility model aims to solve the problems existing in the background technology and proposes an air blowing hardening mechanism for a bridge housing resin sand core.

[0005] The technical solution of the utility model: a bridge housing resin sand core air blowing hardening mechanism, including a base plate, a bottom mold and a pressure mold, a pair of support frames are fixed to the upper end of the base plate, the base plate is fixed to the upper end of the support frame, the pressure mold is clamped to the upper end of the base mold, a sealing plate is fixed to the upper end of the pressure mold through a fixing assembly, a diverter seat is fixed to the upper end of the sealing plate, diverter pipes are fixed on both sides of the diverter seat, a docking pipe is fixed to the upper end of the base mold and at a position corresponding to the end of the diverter pipe, the end of the diverter pipe is inserted in the docking pipe, and an air injection pipe is fixed to the upper end of the diverter seat.

[0006] Preferably, the fixing assembly includes a rotating plate, a positioning column and a limiting column, the positioning columns are fixed on the outside of the injection port and are evenly distributed, a pair of limiting columns are fixed on the bottom of the sealing plate and at positions corresponding to the positioning columns, the positioning columns are inserted between the limiting columns, and slots are provided on the limiting columns and the outsides of the positioning columns, a rotating plate is rotatably connected to the periphery of the injection port and at positions corresponding to the slots, a group of blocks are fixed on the inner side wall of the rotating plate, and the blocks are inserted in the corresponding slots.

[0007] Preferably, a group of support plates are fixedly connected to the outer side wall of the injection port, and the support plates are located between adjacent blocks. The inner side wall of the rotating plate is provided with limiting grooves at positions corresponding to the support plates, and the outer side of the support plate is slidably connected in the limiting grooves.

[0008] Preferably, a positioning hole is provided on the outer side wall of the rotating plate, and a telescopic rod is installed at the upper end of the die and at a position corresponding to the positioning hole.

[0009] Preferably, a telescopic groove is provided at the upper end of the pressing die and at a position corresponding to the telescopic rod, and the bottom of the telescopic rod is slidably connected in the telescopic groove and a connecting spring is fixed between the bottom of the telescopic groove.

[0010] Preferably, an airtight pad is fixed to the inner wall of the butt-joint pipe, and the size of the butt-joint pipe is matched with the size of the end of the shunt pipe.

[0011] Compared with the prior art, the utility model has the following beneficial technical effects: the injected gas is injected into the mold cavity through multiple positions by using a diverter pipe to ensure uniform gas injection into the mold cavity, which is beneficial to the hardening of the long strip of bridge shell sand core, and after the sealing plate is covered, the sealing plate can be quickly fixed by rotating the rotating plate, which makes the operation simpler and is beneficial to improving work efficiency during frequent demolding operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a schematic diagram of the partially cutaway structure of the front side of the utility model;

[0013] Figure 2 This is a schematic diagram of the cross-sectional structure of the injection port of the utility model from top view;

[0014] Figure 3 This is a schematic diagram of the bottom appearance structure of the sealing plate of the utility model;

[0015] Figure 4 For this utility model Figure 1 Enlarged structural diagram at A in the middle.

[0016] 1. Bottom plate; 11. Support frame; 2. Bottom mold; 21. Butt joint tube; 3. Press mold; 31. Inlet; 4. Sealing plate; 41. Diverter seat; 42. Diverter tube; 5. Gas injection tube; 6. Fixing assembly; 61. Limiting column; 62. Positioning column; 63. Slot; 64. Rotating plate; 65. Support plate; 66. Limiting slot; 67. Positioning hole; 68. Telescopic rod; 69. Telescopic slot; 610. Connecting spring; 611. Block. DETAILED DESCRIPTION

[0017] The technical solution of the utility model is further described below in conjunction with the accompanying drawings and specific embodiments.

[0018] Example

[0019] like Figure 1-4 As shown, the bridge shell resin sand core air blowing hardening mechanism proposed by the utility model includes a base plate 1, a base mold 2 and a die 3. A pair of support frames 11 are fixed on the upper end of the base plate 1, the base plate 1 is fixed to the upper end of the support frame 11, the die 3 is clamped on the upper end of the base mold 2, and a sealing plate 4 is fixed to the upper end of the die 3 through a fixing assembly 6. A diverter seat 41 is fixed to the upper end of the sealing plate 4, and diverter pipes 42 are fixed on both sides of the diverter seat 41. A docking pipe 21 is fixed at the upper end of the base mold 2 and at a position corresponding to the end of the diverter pipe 42. The end of the diverter pipe 42 is inserted into the docking pipe 21, and an air injection pipe 5 is fixed to the upper end of the diverter seat 41. An airtight pad is fixed to the inner wall of the docking pipe 21, and the size of the docking pipe 21 is matched with the size of the end of the diverter pipe 42.

[0020] The fixing assembly 6 includes a rotating plate 64, a positioning column 62 and a limiting column 61. The positioning column 62 is fixed to the outside of the injection port 31 and is evenly distributed. A pair of limiting columns 61 are fixed to the bottom of the sealing plate 4 and at positions corresponding to the positioning columns 62. The positioning columns 62 are inserted between the limiting columns 61. A card slot 63 is provided on the outside of the limiting columns 61 and the positioning columns 62. A rotating plate 64 is rotatably connected to the outer periphery of the injection port 31 and at a position corresponding to the card slot 63. A group of card blocks 611 are fixed to the inner side wall of the rotating plate 64. The card blocks 611 are all inserted into the corresponding card slots 63. The outside of the injection port 31 A group of support plates 65 are fixedly connected to the wall, and the support plates 65 are all located between adjacent blocks 611. A limiting groove 66 is provided on the inner wall of the rotating plate 64 and at a position corresponding to the support plate 65. The outer side of the support plate 65 is slidably connected in the limiting groove 66. A positioning hole 67 is provided on the outer wall of the rotating plate 64. A telescopic rod 68 is installed at the upper end of the die 3 and at a position corresponding to the positioning hole 67. A telescopic groove 69 is provided at the upper end of the die 3 and at a position corresponding to the telescopic rod 68. The bottom of the telescopic rod 68 is slidably connected in the telescopic groove 69 and a connecting spring 610 is fixed between the bottom of the telescopic groove 69.

[0021] In this embodiment, the die 3 is first clamped onto the bottom die 2, and then the resin sand is injected into the mold cavity through the injection port 31, and then the sealing plate 4 is used to seal the injection port 31. During this process, the two ends of the shunt pipe 42 are inserted into the butt-jointed pipe 21, so that the compressed gas enters the shunt seat 41 through the gas injection pipe 5, and is injected into the mold cavity from the shunt pipe 42 and the middle position of the die 3 at the same time, ensuring that the injection in the mold cavity is uniform. When the sealing plate 4 is fixed, the positioning column 62 is inserted between the limiting columns 61. When the upper end of the injection port 31 is against the bottom of the sealing plate 4, the positioning column 62 and the card groove 63 on the outer wall of the limiting column 61 can be aligned. At this time, the rotation of the rotating plate 64 is used When the block 611 is inserted into the slot 63, the support plate 65 slides in the limiting slot 66, so the rotating plate 64 can only rotate horizontally. After the block 611 is inserted into the slot 63, the positioning column 62 and the limiting column 61 are guaranteed to be unable to move in the vertical direction, so as to fix the sealing plate 4. When the block 611 is inserted into the slot 63, the positioning hole 67 on the rotating plate 64 can be moved to be aligned with the telescopic rod 68. At this time, the upper end of the telescopic rod 68 can be inserted into the positioning hole 67 by the push of the connecting spring 610, so as to limit the rotation of the rotating plate 64, thereby ensuring the stability of the sealing plate 4 after being fixed. The operation is simple and convenient, which is conducive to improving the work efficiency.

[0022] The above-mentioned specific embodiments are only several preferred embodiments of the present invention. Based on the technical solution of the present invention and the relevant inspiration of the above-mentioned embodiments, those skilled in the art can make various alternative improvements and combinations to the above-mentioned specific embodiments.

Claims

1. A bridge housing resin sand core air blowing hardening mechanism, comprising a base plate (1), a bottom mold (2) and a pressing mold (3), characterized in that: A pair of support frames (11) are fixed to the upper end of the base plate (1), the base plate (1) is fixed to the upper end of the support frames (11), the die (3) is clamped to the upper end of the bottom die (2), a sealing plate (4) is fixed to the upper end of the die (3) through a fixing assembly (6), a diverter seat (41) is fixed to the upper end of the sealing plate (4), diverter pipes (42) are fixed to both sides of the diverter seat (41), a butt joint pipe (21) is fixed to the upper end of the bottom die (2) and at a position corresponding to the end of the diverter pipe (42), the end of the diverter pipe (42) is inserted into the butt joint pipe (21), and an air injection pipe (5) is fixed to the upper end of the diverter seat (41).

2. The bridge housing resin sand core air blowing hardening mechanism according to claim 1, characterized in that: The fixing assembly (6) comprises a rotating plate (64), a positioning column (62) and a limiting column (61); the positioning column (62) is fixed on the outside of the injection port (31) and is evenly distributed; a pair of limiting columns (61) are fixed at the bottom of the sealing plate (4) and at positions corresponding to the positioning columns (62); the positioning columns (62) are inserted between the limiting columns (61); the limiting columns (61) and the positioning columns (62) are provided with a clamping groove (63) on the outside; a rotating plate (64) is rotatably connected to the outside of the injection port (31) and at a position corresponding to the clamping groove (63); a group of clamping blocks (611) are fixed to the inner side wall of the rotating plate (64); the clamping blocks (611) are inserted into the corresponding clamping grooves (63).

3. The bridge housing resin sand core air blowing hardening mechanism according to claim 2, characterized in that: A group of support plates (65) are fixedly connected to the outer side wall of the injection port (31), and the support plates (65) are located between adjacent clamping blocks (611). A limiting groove (66) is provided on the inner side wall of the rotating plate (64) at a position corresponding to the support plate (65), and the outer side of the support plate (65) is slidably connected in the limiting groove (66).

4. The bridge housing resin sand core air blowing hardening mechanism according to claim 2, characterized in that: The outer wall of the rotating plate (64) is provided with a positioning hole (67), and a telescopic rod (68) is installed at the upper end of the pressing mold (3) and at a position corresponding to the positioning hole (67).

5. The bridge housing resin sand core air blowing hardening mechanism according to claim 4, characterized in that: A telescopic groove (69) is provided at the upper end of the pressing die (3) and at a position corresponding to the telescopic rod (68). The bottom of the telescopic rod (68) is slidably connected in the telescopic groove (69) and a connecting spring (610) is fixed between the bottom of the telescopic groove (69).

6. The bridge housing resin sand core air blowing hardening mechanism according to claim 1, characterized in that: An airtight pad is fixed to the inner wall of the butt-joint pipe (21), and the size of the butt-joint pipe (21) is compatible with the size of the end of the diverter pipe (42).

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