Novel local pressurizing structure

Abstract

The utility model discloses a novel local pressurizing structure. The novel local pressurizing structure comprises a pressurizing rod, a movable mold, a pressurizing needle plate, a pressurizing needle bottom plate and a local pressurizing oil cylinder, the local pressurizing oil cylinder is fixed to the movable mold, the pressurizing needle bottom plate is connected with a piston rod of the local pressurizing oil cylinder, and the pressurizing needle plate is driven to achieve synchronous local pressurizing of pressurizing rods at multiple positions. The synchronous pressurizing device is compact in structure, low in cost, high in efficiency, capable of achieving synchronous pressurizing of a plurality of local areas and suitable for dies needing to conduct synchronous pressurizing on the plurality of local areas.

Description

TECHNICAL FIELD

[0001] The utility model relates to a mould technical field, concretely is a novel partial pressure increasing structure. BACKGROUND

[0002] In injection molding or die casting process, in order to improve product density, reduce porosity, improve surface quality, often need to apply additional pressure in the specific area of mould, namely partial pressure increasing.

[0003] In prior art, commonly used partial pressure increasing structure usually adopts the mode of one oil cylinder driving one pressure increasing rod. The defect of this structure is that:

[0004] 1. High cost: for the product needing partial pressure increasing in multiple areas, need to configure multiple pressure increasing oil cylinders and pressure increasing rods, leading to the significant increase of mould manufacturing cost.

[0005] 2. Low efficiency: the control and maintenance of multiple oil cylinders are relatively complex, and the synchronism is difficult to guarantee, affecting production efficiency.

[0006] 3. Large space occupation: multiple oil cylinders and pressure increasing rods occupy a large amount of space inside the mould, limiting the flexibility of mould design, especially in small or complex structure mould, it is difficult to arrange enough pressure increasing units.

[0007] 4. Non-uniform pressure increasing effect: the pressure control of multiple oil cylinders may exist difference, leading to the non-uniform pressure of each pressure increasing area, affecting product quality.

[0008] Therefore, a partial pressure increasing structure with compact structure, low cost, high efficiency and multiple point synchronous pressure increasing function is needed to solve the above problems existing in prior art. CONTENT OF UTILITY MODEL

[0009] The utility model aims at overcoming the deficiency of prior art, and provides a novel partial pressure increasing structure, which can realize the synchronous pressure increasing of multiple local areas with small space occupation, reduce cost and improve efficiency.

[0010] In order to achieve the above object, the utility model provides the following technical scheme:

[0011] A novel partial pressure increasing structure, comprising: pressure increasing rod, movable mould, pressure increasing needle plate, pressure increasing needle bottom plate and partial pressure increasing oil cylinder,

[0012] The partial pressure increasing oil cylinder is fixed with the pressure increasing needle bottom plate.

[0013] The pressure increasing needle bottom plate is connected with the piston rod of partial pressure increasing oil cylinder and moves with the movement of piston rod.

[0014] The booster needle plate is arranged above the booster needle base plate, and a groove for limiting the position of the bottom of the booster rod is arranged on the booster needle plate, and the other end of the booster rod passes through the moving die and corresponds to the product area needing to be boosted during the operation of the local boosting oil cylinder.

[0015] Further, the booster needle base plate and the piston rod of the local boosting oil cylinder are fixed through threaded connection or pin connection.

[0016] Further, the booster needle plate and the booster rod are fixed through interference fit, threaded connection or welding.

[0017] Further, the end of the booster rod can be arranged as a plane, a curved surface or a conical surface to adapt to different boosting requirements.

[0018] Further, a return spring is arranged on the booster needle base plate to push the booster needle base plate to reset after the oil cylinder is depressurized.

[0019] Further, the local boosting oil cylinder can adopt a hydraulic oil cylinder or a pneumatic oil cylinder.

[0020] Compared with the prior art, the beneficial effects of the utility model are:

[0021] The mode of driving multiple booster rods by one oil cylinder greatly reduces the space occupation inside the mold, is especially suitable for small or complex structure molds, reduces the number of oil cylinders used, and reduces the manufacturing cost and maintenance cost; one oil cylinder synchronously drives multiple booster rods, ensures the synchronization of each boosting area, and improves the production efficiency; through the control of one oil cylinder, the difference in pressure control of multiple oil cylinders is avoided, the pressure of each boosting area is ensured to be uniform, and the product quality is improved; the number and position of the booster rods can be flexibly adjusted according to the specific requirements of the product, and the adaptability is strong. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 It is a structural schematic view of the utility model.

[0023] In the figure: 1, booster rod; 2, moving die; 3, booster needle plate; 4, booster needle base plate; 5, local boosting oil cylinder; 6, piston rod; 8, return spring. DETAILED DESCRIPTION

[0024] In the following description, a large number of specific details are given in order to provide a more thorough understanding of the utility model. However, it is obvious to those skilled in the art that the utility model can be implemented without one or more of these details. In other examples, in order to avoid confusion with the utility model, some technical features known in the art are not described.

[0025] The applicant designs as Figure 1The new partial pressurization structure shown comprises a pressurization rod 1, a moving die 2, a pressurization needle plate 3, a pressurization needle bottom plate 4 and a partial pressurization oil cylinder 5, the partial pressurization oil cylinder 5 being fixed with the pressurization needle bottom plate 4; the pressurization needle bottom plate 4 is connected with the piston rod 6 of the partial pressurization oil cylinder 5 and moves with the movement of the piston rod 6; the pressurization needle plate 3 is arranged above the pressurization needle bottom plate 4, a groove limiting the bottom position of the pressurization rod 1 is arranged on the pressurization needle plate 3, and the other end of the pressurization needle plate 3 passes through the moving die 2 and corresponds to the product area needing pressurization during the operation of the partial pressurization oil cylinder 5.

[0026] The pressurization needle bottom plate 4 and the piston rod 6 of the partial pressurization oil cylinder 5 are fixed through thread connection or pin connection. The pressurization needle plate 3 and the pressurization rod 1 are fixed through interference fit, thread connection or welding. The end of the pressurization rod 1 can be arranged as a plane, a curved surface or a conical surface. The pressurization needle bottom plate 4 is provided with a return spring 8 for pushing the pressurization needle bottom plate 4 to reset after the oil cylinder is depressurized. The partial pressurization oil cylinder 5 can adopt a hydraulic oil cylinder or a pneumatic oil cylinder.

[0027] Working principle: when the piston rod 6 of the partial pressurization oil cylinder 5 extends, the pressurization needle bottom plate 4 is pushed to move upwards, the pressurization needle bottom plate 4 pushes the pressurization needle plate 3 to move upwards through the pressurization rod 1, so as to exert pressure on the product area needing pressurization and realize partial pressurization. When the oil cylinder is depressurized, the return spring 8 pushes the pressurization needle plate 3 to reset, and the pressurization rod 1 is also reset.

[0028] It is obvious for those skilled in the art that the present application is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or essential characteristics of the present application. Therefore, the embodiments should be regarded as exemplary and non-limiting, the scope of the present application is defined by the appended claims rather than the above description, and all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present application. Any reference signs in the claims should not be regarded as limiting the claims involved.

Claims

1. A novel partial pressure boosting arrangement, comprising: The booster rod (1), the movable die (2), the booster needle plate (3), the booster needle bottom plate (4) and the local booster oil cylinder (5) are characterized in that: The local booster oil cylinder (5) is fixed with the booster needle bottom plate (4); The booster needle bottom plate (4) is connected with the piston rod (6) of the local booster oil cylinder (5) and moves with the movement of the piston rod (6); The booster needle plate (3) is arranged above the booster needle bottom plate (4), a groove for limiting the bottom position of the booster rod (1) is arranged on the booster needle plate (3), and the other end of the booster rod (1) passes through the movable die (2) and corresponds to the product area needing to be boosted during the operation of the local booster oil cylinder (5).

2. A novel partial supercharging structure according to claim 1, characterized in that, The booster needle bottom plate (4) and the piston rod (6) of the local booster oil cylinder (5) are fixed by thread connection or pin connection.

3. A novel partial pressurization structure according to claim 1, characterized by The booster needle plate (3) and the booster rod (1) are fixed by interference fit, thread connection or welding.

4. A novel partial pressurization structure according to claim 1, characterized by The end of the booster rod (1) can be flat, arc or conical.

5. A novel partial pressurization structure according to claim 1, characterized by The booster needle bottom plate (4) is provided with a return spring (8) for pushing the booster needle plate (3) to reset after the oil cylinder is depressurized.

6. A novel partial pressurization structure according to claim 1, characterized by The local booster oil cylinder (5) can be a hydraulic oil cylinder or a pneumatic oil cylinder.

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