Rear wheel steering power-assisted shell mold

Abstract

The utility model provides a rear wheel power-assisted steering shell mould which comprises a fixed mould plate, a movable mould plate, a fixed mould core, a movable mould core, mould feet and a base, the fixed mould plate, the movable mould plate, the mould feet and the base are sequentially stacked and fixedly connected, the mould feet are arranged on the periphery between the base and the movable mould plate, the fixed mould core and the movable mould core are arranged in the fixed mould plate and the movable mould plate, and the fixed mould core and the movable mould core are arranged on the base. The fixed mold core and the movable mold core are sequentially stacked up and down, mold cavities are formed in the fixed mold core and the movable mold core, and a material injection opening is formed in the fixed mold plate and is communicated with the interiors of the mold cavities; the device is further provided with a compaction device, the compaction device comprises an upper compaction oil cylinder and a lower compaction oil cylinder, the output end of the upper compaction oil cylinder is provided with an upper push shaft, and the tail end of the upper push shaft is provided with an upper extrusion pin. A lower pushing shaft is arranged at the output end of the lower compaction oil cylinder, a connecting block is arranged at the top end of the lower pushing shaft, and a lower compaction pin is arranged on the upper surface of the connecting block.

Description

Technical Field

[0001] The utility model relates to the technical field of molds, in particular to a rear wheel steering power-assisting housing mold. Background Art

[0002] The EPS motor (Electrical Power Steering) is used to provide steering assistance for vehicles. Compared with the traditional hydraulic power steering system, the EPS motor has higher efficiency, lighter design and higher reliability, and is an important technology in modern vehicles.

[0003] Generally, the power steering housing is cast by die casting, and a die casting cycle process includes the following processes in sequence: mold closing, injection, pressure holding, mold opening, oil cylinder core pulling, casting ejection, part removal, and spraying. After completing the above die casting process, the mold is opened again after the slider core is reset to carry out the next die casting process; in the core pulling process of the slider core (or "mold extraction process"), the oil cylinder is used to provide power for the core pulling, and the core pulling device is also required to be used in conjunction with it to pull out the slider core in the casting.

[0004] The rear-wheel steering power housing of the car has high requirements for yield, mechanical tensile strength, elongation and porosity, and the aluminum alloy die-casting process has uneven wall thickness of the product, especially when the runner cannot meet the filling and shrinkage effect, the quality of the finished product cannot be guaranteed.

[0005] For this reason, a rear wheel steering power-assisting housing mold is proposed here to solve the above-mentioned problems. Utility Model Content

[0006] In order to overcome the deficiencies of the prior art, the utility model provides a rear wheel steering power-assisting housing mold.

[0007] The utility model is implemented by the following technical solutions:

[0008] A rear wheel steering power-assist housing mold, comprising a fixed mold plate, a movable mold plate, a fixed mold core, a movable mold core, a mold foot and a base, wherein the fixed mold plate, the movable mold plate, the mold foot and the base are stacked and fixedly connected in sequence, the mold foot is arranged around the base and the movable mold plate, the fixed mold core and the movable mold core are arranged inside the fixed mold plate and the movable mold plate, the fixed mold core and the movable mold core are stacked up and down in sequence, a mold cavity is arranged in the fixed mold core and the movable mold core, an injection port is arranged in the fixed mold plate, and the injection port is communicated with the mold cavity;

[0009] The device is also provided with a compacting device, which includes an upper compacting oil cylinder and a lower compacting oil cylinder, an upper pushing shaft is provided at the output end of the upper compacting oil cylinder, and an upper squeezing pin is provided at the end of the upper pushing shaft;

[0010] A lower push shaft is provided at the output end of the lower compacting oil cylinder, a connecting block is provided at the top end of the lower push shaft, and a lower compacting pin is provided on the upper surface of the connecting block.

[0011] A counter-operation side core pulling assembly is provided on the left side of the movable platen, and the counter-operation side core pulling assembly includes a core pulling cylinder, and the core pulling cylinder is fixed to the side wall of the movable platen through a core pulling cylinder bracket;

[0012] The output end of the core pulling cylinder is provided with a core pulling drive shaft, the end of the core pulling drive shaft is fixedly connected with a core pulling connector, the core pulling connector is connected with a core pulling clamping block, and the upper end of the core pulling clamping block is fixedly provided with a core pulling slider.

[0013] An operating side assembly is provided on the right side of the movable platen, and the operating side assembly includes an operating side oil cylinder, and the operating side oil cylinder is fixed to the side wall of the movable platen through an operating side oil cylinder bracket;

[0014] An operating side driving shaft is provided at the output end of the operating side oil cylinder, an operating side connecting head is fixedly connected to the end of the operating side driving shaft, an operating side connecting head is connected to an operating side clamping block, and an operating side sliding block is fixedly provided at the upper end of the operating side clamping block.

[0015] A ground side operating assembly is provided on the front of the movable template, and the ground side operating assembly includes a ground side oil cylinder, and the ground side oil cylinder is fixed to the side wall of the movable template through a ground side oil cylinder bracket;

[0016] The output end of the ground side oil cylinder is provided with a ground side driving shaft, the end of the ground side driving shaft is fixedly connected with a ground side connector, the ground side connector is connected with a ground side clamping block, and the upper end of the ground side clamping block is fixedly provided with a ground side sliding block.

[0017] A plurality of hoisting devices are arranged on the side walls of the fixed template and the movable template. The hoisting devices include hoisting rings and hoisting rods. The ends of the hoisting rods are fixed on the fixed template and the movable template, and the hoisting rings are fixed on the top ends of the hoisting rods.

[0018] Compared with the prior art, the utility model has the following beneficial effects:

[0019] 1. By setting up the upper compaction cylinder and the lower compaction cylinder, and starting the cylinder, the cylinder will push the upper push shaft and the lower push shaft to move respectively, thereby driving the extrusion pin to move, and then applying pressure to the thick wall through the extrusion pin to force shrinkage to eliminate the shrinkage holes and shrinkage defects there, thereby improving the problem of pressure leakage in the die casting test and improving the product yield. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the three-dimensional structure of the side of the utility model;

[0021] Figure 2It is a three-dimensional structural schematic diagram of the utility model from top view;

[0022] Figure 3 This is a schematic diagram of the internal structure of the utility model;

[0023] Figure 4 This is a schematic diagram of the internal structure of the utility model from a top view;

[0024] Figure 5 This is a schematic diagram of the position structure of the compaction pin and the steering power-assist housing of the utility model;

[0025] In the figure: 1, fixed plate; 11, injection port; 12, upper compacting cylinder; 13, fixed plate; 14, upper push shaft; 15, upper extrusion pin; 2, movable plate; 21, lifting ring; 22, lifting rod; 23, positioning column; 3, mold foot; 4, base; 41, lower compacting cylinder; 42, lower push shaft; 43, connecting block; 44, lower extrusion pin; 5, locking module; 6, reverse side core pulling assembly; 61, core pulling cylinder; 6 2. Core-pulling drive shaft; 63. Core-pulling cylinder bracket; 64. Core-pulling connector; 65. Core-pulling clamp block; 66. Core-pulling slider; 7. Operating side assembly; 71. Operating side cylinder; 72. Operating side drive shaft; 73. Operating side cylinder bracket; 74. Operating side connector; 75. Operating side clamp block; 76. Operating side slider; 8. Fixed mold core; 81. Moving mold core; 9. Ground side operating assembly; 10. Power steering housing. DETAILED DESCRIPTION

[0026] The present invention is further described below in conjunction with the accompanying drawings and specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form a new embodiment.

[0027] The utility model is further described below in conjunction with the accompanying drawings.

[0028] like Figure 1 to Figure 2 As shown, a rear wheel steering power housing 10 mold comprises a fixed mold plate 1, a movable mold plate 2, a mold foot 3 and a base 4, wherein the fixed mold plate 1, the movable mold plate 2, the mold foot 3 and the base 4 are sequentially stacked and fixedly connected, and the mold foot 3 is arranged around the base 4 and the movable mold plate 2;

[0029] It also includes a fixed mold core 8 and a movable mold core 81, which are arranged inside the fixed mold plate 1 and the movable mold plate 2, and are stacked up and down in sequence, and a mold cavity is provided in the fixed mold core 8 and the movable mold core 81, and an injection port 11 is provided in the fixed mold plate 1, and the injection port 11 is connected to the mold cavity;

[0030] A counter-operation side core pulling assembly 6 is provided on the left side of the movable platen 2. The counter-operation side core pulling assembly 6 includes a core pulling cylinder 61. The core pulling cylinder 61 is fixed to the side wall of the movable platen 2 through a core pulling cylinder bracket 63.

[0031] The output end of the core pulling cylinder 61 is provided with a core pulling drive shaft 62 , the end of the core pulling drive shaft 62 is fixedly connected with a core pulling connector 64 , the core pulling connector 64 is connected with a core pulling clamping block 65 , and a core pulling slider 66 is fixedly provided on the upper end of the core pulling clamping block 65 .

[0032] An operating side assembly 7 is provided on the right side of the movable platen 2. The operating side assembly 7 includes an operating side oil cylinder 71. The operating side oil cylinder 71 is fixed to the side wall of the movable platen 2 through an operating side oil cylinder bracket 73.

[0033] An operating side drive shaft 72 is provided at the output end of the operating side oil cylinder 71 , an operating side connector 74 is fixedly connected to the end of the operating side drive shaft 72 , an operating side clamping block 75 is connected to the operating side clamping block 75 , and an operating side slider 76 is fixedly provided at the upper end of the operating side clamping block 75 .

[0034] A ground side operating assembly 9 is provided on the front of the movable template 2. The ground side operating assembly 9 includes a ground side oil cylinder. The ground side oil cylinder is fixed to the side wall of the movable template 2 through a ground side oil cylinder bracket.

[0035] The output end of the ground side oil cylinder is provided with a ground side driving shaft, the end of the ground side driving shaft is fixedly connected with a ground side connector, the ground side connector is connected with a ground side clamping block, and the upper end of the ground side clamping block is fixedly provided with a ground side sliding block.

[0036] A plurality of lifting devices are provided on the side walls of the fixed mold plate 1 and the movable mold plate 2, and the lifting devices include a lifting ring 21 and a hanging rod 22. The ends of the hanging rod 22 are fixed on the fixed mold plate 1 and the movable mold plate 2, and the lifting ring 21 is fixed on the top of the hanging rod 22. Since the mold is often very heavy, if an accident occurs during transportation, it will not only affect the die-casting equipment, but also cause danger to the operator. The lifting ring 21 and the hanging rod 22 can allow the mold to be suspended stably, reducing the incidence of accidents caused by unstable center of gravity during transportation or operation of the mold. After the mold is suspended using the lifting ring 21, it can be carried and transported through the equipped hanging rod 22, and it is more convenient to maintain and service it.

[0037] like Figure 3 and Figure 4 As shown, the device is also provided with a compacting device, which includes an upper compacting cylinder 12 and a lower compacting cylinder 41. The output end of the upper compacting cylinder 12 is provided with an upper push shaft 14, and the end of the upper push shaft 14 is provided with an upper extrusion pin 15;

[0038] A lower pushing shaft 42 is disposed at the output end of the lower compacting oil cylinder 41 , a connecting block 43 is disposed at the top end of the lower pushing shaft 42 , and a lower compacting pin is disposed on the upper surface of the connecting block 43 .

[0039] When in use, by starting the upper compaction cylinder 12 and the lower compaction cylinder 41, the cylinders will push the upper push shaft 14 and the lower push shaft 42 to move respectively, thereby driving the extrusion pin to move, and then applying pressure through the extrusion pin to force shrinkage compensation at the thick wall to eliminate shrinkage holes and shrinkage defects at the thick wall, thereby improving the problem of pressure leakage during die-casting testing and increasing the product yield.

[0040] The above-mentioned implementation modes are only preferred implementation modes of the present invention, and cannot be used to limit the protection scope of the present invention. Any non-substantial changes and substitutions made by technicians in this field on the basis of the present invention shall fall within the scope of protection required by the present invention.

Claims

1. A rear wheel steering power-assist housing mold, comprising a fixed mold plate (1), a movable mold plate (2), a fixed mold core (8), a movable mold core (81), a mold foot (3) and a base (4), wherein the fixed mold plate (1), the movable mold plate (2), the mold foot (3) and the base (4) are stacked and fixedly connected in sequence, the mold foot (3) is arranged around the base (4) and the movable mold plate (2), the fixed mold core (8) and the movable mold core (81) are arranged inside the fixed mold plate (1) and the movable mold plate (2), and the fixed mold core (8) and the movable mold core (81) are stacked up and down in sequence, characterized in that: The fixed mold core (8) and the movable mold core (81) are provided with a mold cavity, and the fixed mold plate (1) is provided with an injection port (11), and the injection port (11) is connected to the mold cavity; The rear wheel steering assist housing mold is also provided with a compacting device, the compacting device comprising an upper compacting oil cylinder (12) and a lower compacting oil cylinder (41), the output end of the upper compacting oil cylinder (12) is provided with an upper driving shaft (14), and the end of the upper driving shaft (14) is provided with an upper extrusion pin (15); The output end of the lower compacting oil cylinder (41) is provided with a lower driving shaft (42), the top end of the lower driving shaft (42) is provided with a connecting block (43), and the upper surface of the connecting block (43) is provided with a lower compacting pin.

2. A rear wheel steering power housing mold according to claim 1, characterized in that: A counter-operation side core pulling assembly (6) is provided on the left side of the movable platen (2), and the counter-operation side core pulling assembly (6) comprises a core pulling cylinder (61), and the core pulling cylinder (61) is fixed to the side wall of the movable platen (2) via a core pulling cylinder bracket (63); The output end of the core pulling cylinder (61) is provided with a core pulling drive shaft (62), the end of the core pulling drive shaft (62) is fixedly connected with a core pulling connector (64), the core pulling connector (64) is connected with a core pulling clamping block (65), and the upper end of the core pulling clamping block (65) is fixedly provided with a core pulling slider (66).

3. A rear wheel steering power housing mold according to claim 2, characterized in that: An operating side assembly (7) is provided on the right side of the movable platen (2), wherein the operating side assembly (7) comprises an operating side oil cylinder (71), and the operating side oil cylinder (71) is fixed to the side wall of the movable platen (2) via an operating side oil cylinder bracket (73); An operating side drive shaft (72) is provided at the output end of the operating side oil cylinder (71), an operating side connector (74) is fixedly connected to the end of the operating side drive shaft (72), an operating side clamping block (75) is connected to the operating side clamping block (75), and an operating side slider (76) is fixedly provided at the upper end of the operating side clamping block (75).

4. A rear wheel steering power-assist housing mold according to claim 3, characterized in that: A ground side operating assembly (9) is provided on the front of the movable template (2), and the ground side operating assembly (9) comprises a ground side oil cylinder, and the ground side oil cylinder is fixed to the side wall of the movable template (2) through a ground side oil cylinder bracket; The output end of the ground side oil cylinder is provided with a ground side driving shaft, the end of the ground side driving shaft is fixedly connected with a ground side connector, the ground side connector is connected with a ground side clamping block, and the upper end of the ground side clamping block is fixedly provided with a ground side sliding block.

5. The rear wheel steering power-assist housing mold according to claim 4, characterized in that: A plurality of lifting devices are provided on the side walls of the fixed mold plate (1) and the movable mold plate (2), and the lifting devices include lifting rings (21) and lifting rods (22). The ends of the lifting rods (22) are fixed on the fixed mold plate (1) and the movable mold plate (2), and the lifting rings (21) are fixed on the top ends of the lifting rods (22).

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