Quick change device for assembly die
A quick-change mold assembly system addresses the challenges of producing high-quality aluminum alloy bend pipe fittings by ensuring precise dimensions and smooth surfaces, achieving high yield and long mold life with efficient production.
Patent Information
- Application Number
- CN202420307457.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-02-20
- Publication Date
- 2025-07-15
- Estimated Expiration
- 2034-02-20
AI Technical Summary
The prior art is difficult to efficiently produce high-quality die-cast bent pipe joints, especially in mass production, which are difficult to meet the problems of dimensional requirements, difficult to demold, high cost and insufficient mold life.
A quick mold replacement device is designed, including main template, cavity, slider and oil cylinder and other components. The cylinder drives the slider and inner core to achieve rapid molding of the bent pipe joint, and combines the limiting plate and slider structure to achieve rapid replacement and efficient production of the mold.
It has achieved efficient mass production of die-cast aluminum alloy bent pipe joints, with accurate dimensions, smooth surface, and a yield rate of up to 97%. The mold life reaches 3 million molds, reducing the cost of a single piece.
Smart Images
Figure CN223097976U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a quick-change device for an assembly die, belonging to the technical field of a core-pulling mechanism of a die-casting die. Background Technique
[0002] Pressure casting is a casting method in which liquid or semi-solid metal or alloy, or liquid metal or alloy containing a reinforcing phase, is filled into the cavity of a die-casting mold at a high speed under high pressure, and the metal or alloy solidifies under pressure to form a casting. The commonly used pressure during die casting is 4 - 500 MPa, and the metal filling speed is 0.5 - 120 m / s. Therefore, high pressure and high speed are the fundamental differences and important characteristics between the die-casting method and other casting methods.
[0003] In die-casting production, a die-casting machine, die-casting alloy, and die-casting mold are the three major elements. The die-casting process is a process of making a proper combination and application of the three major elements to meet the needs of die-casting production. The selection of the injection specific pressure should be determined according to different alloys and the structural characteristics of the casting. For the selection of the filling speed, generally for thick-walled or castings with high internal quality requirements, a lower filling speed and high boosting pressure should be selected; for thin-walled or castings with high surface quality requirements and complex castings, a higher specific pressure and high filling speed should be selected.
[0004] Die-casting materials, die-casting machines, and molds are the three major elements of die-casting production, and none of them can be missing. The so-called die-casting process is a process of organically integrating and applying these three major elements to stably, rhythmically, and efficiently produce qualified castings, and even high-quality castings, with good appearance, internal quality, and dimensions meeting the requirements of the drawing or agreement. A die-casting mold is a tool for casting metal parts. The control of the surface temperature of the die-casting mold is very important for the production of high-quality die-castings. Uneven or inappropriate die-casting mold temperature will also cause the dimensions of the casting to be unstable, the casting to be deformed during ejection in the production process, and defects such as thermal stress, sticking to the mold, surface depression, internal shrinkage cavity, and thermal bubbles to occur. When the mold temperature difference is large, it will have varying degrees of influence on variables in the production cycle, such as filling time, cooling time, and spraying time.
[0005] There is an existing elbow joint. The drawing requires the material to be ADC12. The standard size of the elbow joint is DN40, the pipe orifice diameter is 45 mm, the length dimension is 57 mm, and the annual demand is 500,000 pieces. According to the material requirements, the process of this part needs to adopt high-pressure die-casting molding, and a die-casting mold with a core-pulling slider needs to be manufactured, and the designed service life reaches 3 million moldings. This is a technical problem to be solved urgently. Content of the Utility Model
[0006] To solve the problems existing in the prior art, the purpose of the present utility model is to provide a quick-change device for an assembly mold, which is specifically used for manufacturing elbow joints made of die-cast aluminum alloy. It has high batch production efficiency, is conducive to demolding, the dimensions can meet the requirements of the drawings, the production speed is fast, and the tensile strength of the elbow joint meets the design requirements of the drawings; one cavity per mold, one elbow joint can be produced each time, the surface of the casting is smooth, without defects and with less machining allowance, which is conducive to machining operations, airtight leak detection, welding operations and shot blasting processes; the single-piece manufacturing cost is low, the material consumption is small and it is easy to form, the finished product rate is as high as 97%, and the mold life can reach the design requirement of 3 million moldings.
[0007] To achieve the above purpose, the present utility model provides the following technical solutions
[0008] A quick-change device for an assembly mold, characterized in that: it includes a main template 8 and a cavity 9. A groove is opened at the center position above the main template 8. On the left and right sides of the top of the groove, two groups of side support plates 4 are respectively fixed by screws. On the top of the two groups of side support plates 4, a limit plate 2 is fixed by screws. At the center position of the top of the limit plate 2, an oil cylinder 1 is fixedly provided. The main shaft of the oil cylinder 1 passes downward through the limit plate 2 and is threadedly connected to the top of the slider 5. At the bottom of the slider 5, an inner core 6 is fixedly provided by screws. On the outer sides of the two groups of side support plates 4, left and right front slide bars 3 are fixedly provided by screws.
[0009] The front slide bar 3 and the inner side of the side support plate 4 are provided with a cavity for the slider 5 to freely slide.
[0010] A cavity 9 is inlaid at the center position of the main template 8, and a lead-out rod is slidably arranged inside the cavity 9.
[0011] Four groups of sliding sleeves are provided at the four corner positions on the front surface of the main template 8.
[0012] At the four corner positions on the back surface of the main template 8, a guide rod plate 10 with a lead-out rod is provided through a spring.
[0013] On each of the left and right sides of the cavity 9, a slide rod with an inclined angle is provided.
[0014] The beneficial effects of the present utility model are as follows
[0015] 1. Specifically used for manufacturing elbow joints 7 made of die-cast aluminum alloy, with high batch production efficiency, conducive to demolding, the dimensions can meet the requirements of the drawings, the production speed is fast, and the tensile strength of the elbow joint 7 meets the design requirements of the drawings;
[0016] 2. One cavity per mold, one elbow joint 7 can be produced each time, the surface of the casting is smooth, without defects and with less machining allowance, which is conducive to machining operations, airtight leak detection, welding operations and shot blasting processes;
[0017] 3. The production cost per piece is low, with less material used and easy to form. The finished product rate is as high as 97%, and the mold life can reach the design requirement of 3 million moldings. Description of the Drawings
[0018] Figure 1 It is the front view of the present utility model;
[0019] Figure 2 It is the three-dimensional view of the present utility model;
[0020] Figure 3 is Figure 1 the three-dimensional exploded view of the middle part;
[0021] Figure 4 It is the three-dimensional view of the elbow joint 7.
[0022] In the figure: oil cylinder 1, limit plate 2, front slide bar 3, side support plate 4, slider 5, inner core 6, elbow joint 7, main template 8, cavity 9, guide rod plate 10. Detailed Implementation Manner
[0023] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.
[0024] As shown in the Figures 1-4 drawings, an assembly mold quick change device includes a main template 8 and a cavity 9. A groove is opened at the center position above the main template 8. On the left and right sides of the top of the groove, two groups of side support plates 4 are respectively fixed by screws. At the top of the two groups of side support plates 4, a limit plate 2 is fixed by screws. At the center position of the top of the limit plate 2, an oil cylinder 1 is fixed. The main shaft of the oil cylinder 1 passes downward through the limit plate 2 and is threadedly connected to the top of the slider 5. At the bottom of the slider 5, an inner core 6 is fixed by screws. On the outer sides of the two groups of side support plates 4, left and right front slide bars 3 are fixed by screws. A cavity for the slider 5 that can slide freely is opened on the inner side of the front slide bar 3 and the side support plate 4.
[0025] The cavity 9 is inlaid at the center position of the main template 8. A lead-out rod is slidably arranged inside the cavity 9. On each of the left and right sides of the cavity 9, there is a slide bar with an inclined angle. At the four corner positions on the front of the main template 8, four groups of sliding sleeves are provided. At the four corner positions on the back of the main template 8, a guide rod plate 10 with a lead-out rod is provided through springs.
[0026] The working principle of this assembly mold quick change device:
[0027] On the side of the oil cylinder 1, an oil inlet nozzle and an oil outlet nozzle are respectively provided, both of which are connected to the oil pressure pump through an oil pipeline. The main shaft of the oil cylinder 1 passes downward through the limit plate 2 and is connected to the top of the slider 5 by a thread. At the bottom of the slider 5, an inner core 6 is fixedly provided by screws. On the outer side surfaces of the two groups of side support plates 4, left and right front slide bars 3 are fixedly provided by screws. In the front slide bars 3 and the inner side surfaces of the side support plates 4, a cavity for the slider 5 to slide freely is provided. At the center position of the main template 8, a cavity 9 is inlaid. Inside the cavity 9, a lead-out rod is slidably provided. On each of the left and right sides of the cavity 9, a slide rod with an inclined angle is provided; in the cavity 9, a concave structure for the elbow joint 7 is provided. The inner core 6 is designed for the upper end pipe orifice of the elbow joint 7 to be formed, and the lower end pipe orifice of the elbow joint 7 is formed by the cooperation of the slider 5 of the moving die.
[0028] The embodiments of the present invention are given for purposes of illustration and description, and are not intended to be exhaustive or to limit the present invention to the disclosed form. Many modifications and variations are obvious to those of ordinary skill in the art. The embodiments are chosen and described in order to better explain the principles of the present invention and its practical application, and to enable those of ordinary skill in the art to understand the present invention and design various embodiments with various modifications suitable for specific purposes.
Claims
1. An assembly die quick-change device, characterized in that: It includes a main template (8) and a cavity (9). A groove is provided at the center position above the main template (8). On the left and right sides of the top of the groove, two groups of side support plates (4) are respectively fixed by screws. At the top of the two groups of side support plates (4), a limit plate (2) is fixed by screws. At the center position of the top of the limit plate (2), an oil cylinder (1) is fixedly provided. The main shaft of the oil cylinder (1) passes downward through the limit plate (2) and is threadedly connected to the top of a slider (5). At the bottom of the slider (5), an inner core (6) is fixed by screws. On the outer sides of the two groups of side support plates (4), left and right front slide bars (3) are fixed by screws.
2. The quick-change device for an assembly mold according to claim 1, wherein: A cavity (9) is embedded at the center position of the main template (8), and a lead-out rod is slidably arranged inside the cavity (9).
3. The quick-change device for an assembly die according to claim 2, wherein: Four sets of sliding sleeves are provided at the four corner positions on the front surface of the main template (8).
4. The quick-change device for an assembly mold according to claim 3, characterized in that: At the four corner positions on the rear surface of the main template (8), a guide rod plate (10) with a lead-out rod is provided through springs.