Anti-jamming injection mold with directional ejection

Abstract

The utility model discloses a kind of anti-jamming type injection mould of directional ejection, it relates to injection mould technical field, to solve the injection of the existing injection mould cavity in time, after injection, cavity wall will appear abrasion, smoothness drops, when appearing, prone to the situation of material blocking, practicality needs to be improved, its technical scheme main points include lower mould, the inside of lower mould is provided with processing groove, and multiple cavity side plates are slidably installed in the inside of processing groove, multiple side surfaces of lower mould are all fixedly installed with pneumatic cylinder, the number and position of pneumatic cylinder are all one-to-one corresponding with the number and position of cavity side plate, the telescopic end of pneumatic cylinder is fixedly connected on the side surface of cavity side plate, the bottom of the inside processing groove of lower mould is provided with cavity bottom plate, the lower surface of lower mould is provided with mounting hole, and mounting hole is fixedly installed with jacking structure in the inside, reach the effect that can always keep high discharging smoothness, and practicality is strong.

Description

Technical Field

[0001] This utility model relates to the field of injection mold technology, and in particular to a directional ejection anti-jamming injection mold. Background Technology

[0002] Injection molds are tools used to process plastic materials into specific shapes. They are produced by heating and melting plastic granules in an injection molding machine, injecting the melted granules into a mold cavity, and then cooling and solidifying them to obtain the desired plastic product. Injection molds are widely used in various fields, such as automobiles, electronics, toys, and plastic packaging. They can produce plastic products of various shapes and sizes to meet the needs of different industries.

[0003] After a period of injection molding, the cavity walls of existing injection molds will wear down, resulting in decreased smoothness and making them prone to jamming. Their practicality needs to be improved. Utility Model Content

[0004] The purpose of this invention is to provide a directional ejection anti-jamming injection mold that can always maintain a high degree of material discharge smoothness and is highly practical.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A directional ejection anti-jamming injection mold includes a lower mold. The lower mold has a machining groove inside, and multiple cavity side plates are slidably installed inside the machining groove. Cylinders are fixedly installed on multiple side surfaces of the lower mold, with the number and position of the cylinders corresponding one-to-one with the number and position of the cavity side plates. The telescopic ends of the cylinders are fixedly connected to the side surfaces of the cavity side plates. A cavity bottom plate is provided at the bottom of the machining groove inside the lower mold. Mounting holes are provided on the lower surface of the lower mold, and a lifting structure is fixedly installed inside the mounting holes. The telescopic end of the lifting structure is fixedly connected to the lower surface of the cavity bottom plate.

[0007] By adopting the above technical solution, the cavity side plate can move and separate from the injection molded part after injection molding, which improves the smoothness of material discharge and avoids material jamming.

[0008] Furthermore, the lifting structure includes a lifting base, a second piston rod is slidably installed inside the lifting base, an oil cavity is provided inside the lifting base, and the upper end of the second piston rod is fixedly connected to the lower surface of the cavity bottom plate.

[0009] By adopting the above technical solution, the extension and retraction of the second piston rod can be used to drive the cavity bottom plate to move.

[0010] Furthermore, multiple hydraulic oil chambers are provided on the upper surface of the lower mold, and an oil guide pipe is connected to the bottom of each hydraulic oil chamber. The other end of the oil guide pipe is connected to an oil chamber inside the lifting structure. Hydraulic oil is stored inside the hydraulic oil chamber, the oil guide pipe, and the oil chamber.

[0011] By adopting the above technical solution, the effective flow of hydraulic oil is ensured.

[0012] Furthermore, a first piston rod is slidably installed inside the hydraulic oil chamber of the lower mold, and a spring is provided at the bottom of the hydraulic oil chamber, with the other end of the spring abutting against the end face of the first piston rod.

[0013] By adopting the above technical solution, the hydraulic oil volume can be adjusted and the spring can be squeezed by extending and retracting the first piston rod.

[0014] Furthermore, an upper mold is provided above the lower mold.

[0015] By adopting the above technical solutions, the injection molding process can be carried out effectively.

[0016] Furthermore, an injection nozzle and an air guide nozzle are provided on the upper surface of the upper mold.

[0017] By adopting the above technical solution, air extraction and material injection can be effectively achieved.

[0018] In summary, the beneficial technical effects of this utility model are as follows:

[0019] 1. This utility model can extend multiple cylinders and retract the lifting structure during injection molding, so that multiple cavity side plates and cavity bottom plates can be spliced ​​into an injection cavity in the processing groove of the lower mold. Then, injection molding can be performed inside the spliced ​​injection cavity. After injection molding is completed, the cylinders retract, so that multiple cavity side plates slide inside the processing groove and separate from the injection molded part, which facilitates subsequent ejection and prevents jamming during ejection. The smoothness of material ejection is effectively improved, avoiding the decrease in the smoothness of the cavity inner wall after the injection mold has been working for a long time, which can easily lead to frequent material jamming during ejection. The overall practicality is effectively improved.

[0020] 2. During injection molding, the upper and lower molds of this invention engage. The upper mold exerts force on the upper ends of multiple first piston rods, causing them to retract into the hydraulic oil chamber. The springs are compressed, and the hydraulic oil flows through the guide pipe into the oil chamber inside the lifting base. As the amount of hydraulic oil in the oil chamber increases, the second piston rod retracts into the lifting base, causing the cavity bottom plate to fit against the bottom of the processing groove. This ensures stable injection molding. After injection molding, the upper and lower molds separate. The upper mold no longer exerts force on the first piston rods, releasing the compressed springs and allowing the first piston rods to extend out of the hydraulic oil chamber. This effectively extracts the hydraulic oil from the chamber, allowing the second piston rod to extend out of the lifting base, thus raising the cavity bottom plate and enabling the lifting operation of the injection molded part. This significantly improves the ease of ejection of the injection molded part, while maintaining a simple and stable overall structure. Attached Figure Description

[0021] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0022] Figure 2 This is a diagram of the internal structure of the present invention;

[0023] Figure 3 This utility model Figure 2 Enlarged view of point A.

[0024] In the diagram: 1. Lower mold; 2. Upper mold; 3. Cylinder; 4. Cavity side plate; 5. Cavity bottom plate; 6. First piston rod; 7. Spring; 8. Oil guide pipe; 9. Lifting structure; 10. Lifting base; 11. Second piston rod; 12. Oil cavity. Detailed Implementation

[0025] The method of this utility model will be further described in detail below with reference to the accompanying drawings.

[0026] Reference Figure 1 , Figure 2A type of directional ejection anti-jamming injection mold includes a lower mold 1. The lower mold 1 has a machining groove inside, and multiple cavity side plates 4 are slidably installed inside the machining groove. Cylinders 3 are fixedly installed on multiple side surfaces of the lower mold 1, with the number and position of the cylinders 3 corresponding one-to-one with the number and position of the cavity side plates 4. The telescopic ends of the cylinders 3 are fixedly connected to the side surfaces of the cavity side plates 4. A cavity bottom plate 5 is provided at the bottom of the machining groove inside the lower mold 1. Mounting holes are provided on the lower surface of the lower mold 1, and lifting structures 9 are fixedly installed inside the mounting holes. The telescopic ends of the lifting structures 9 are fixedly connected to the lower surface of the cavity bottom plate 5. An upper mold 2 is provided above the lower mold 1. The surface is equipped with injection nozzles and air guide nozzles. During injection molding, multiple cylinders 3 can extend and the lifting structure 9 can retract, allowing multiple cavity side plates 4 and cavity bottom plates 5 to be assembled into an injection cavity within the processing groove of the lower mold 1. Injection molding can then be performed inside the assembled injection cavity. After injection molding is completed, the cylinders 3 retract, causing the multiple cavity side plates 4 to slide inside the processing groove, separating the cavity side plates 4 from the injection molded part. This facilitates subsequent ejection and prevents jamming during ejection, effectively improving the smoothness of material ejection. This avoids the decrease in the smoothness of the cavity inner wall after prolonged use of the injection mold, which can easily lead to frequent material jamming during ejection. Overall, the practicality is effectively improved.

[0027] Reference Figure 1 , Figure 2 , Figure 3The lifting structure 9 includes a lifting base 10. A second piston rod 11 is slidably installed inside the lifting base 10. An oil cavity 12 is provided inside the lifting base 10. The upper end of the second piston rod 11 is fixedly connected to the lower surface of the cavity base plate 5. Multiple hydraulic oil cavities are provided on the upper surface of the lower mold 1. The bottom of the hydraulic oil cavities is connected to an oil guide pipe 8. The other end of the oil guide pipe 8 is connected to the oil cavity 12 inside the lifting structure 9. Hydraulic oil is stored inside the hydraulic oil cavities, the oil guide pipe 8, and the oil cavity 12. A first piston rod 6 is slidably installed inside the hydraulic oil cavity of the lower mold 1. A spring 7 is provided at the bottom of the hydraulic oil cavity. The other end of the spring 7 abuts against the end face of the first piston rod 6. During injection molding, the upper mold 2 and the lower mold 1 are engaged. At this time, the upper mold 2 exerts a force on the upper ends of the multiple first piston rods 6, causing the first piston rods 6 to retract into the hydraulic cavity. Inside the oil chamber, spring 7 is compressed, and hydraulic oil inside the hydraulic oil chamber flows into the oil chamber 12 inside the lifting base 10 through the oil guide pipe 8. As the amount of hydraulic oil inside the oil chamber 12 increases, the second piston rod 11 retracts into the lifting base 10, thereby causing the cavity bottom plate 5 to fit against the bottom of the processing groove, ensuring the stability of the injection molding process. After the injection is completed, the upper mold 2 separates from the lower mold 1. At this time, the upper mold 2 no longer exerts force on the first piston rod 6, and the compressed spring 7 is released, causing the first piston rod 6 to extend out of the hydraulic oil chamber. This effectively extracts the hydraulic oil inside the oil chamber 12, allowing the second piston rod 11 to extend out of the lifting base 10, thereby raising the cavity bottom plate 5 and enabling the lifting operation of the injection molded part, effectively improving the convenience of material discharge of the injection molded part. At the same time, the entire structure is simple and stable.

[0028] Working principle: During use, the injection mold is first installed on the injection molding machine, enabling effective injection molding. During injection, the upper mold 2 and lower mold 1 align. At this time, the upper mold 2 exerts force on the upper ends of multiple first piston rods 6, causing the first piston rods 6 to retract into the hydraulic oil chamber. The spring 7 is compressed, and the hydraulic oil inside the hydraulic oil chamber flows along the oil guide pipe 8 into the oil chamber 12 inside the lifting base 10. As the amount of hydraulic oil in the oil chamber 12 increases, the second piston rod 11 retracts into the lifting base 10, causing the cavity bottom plate 5 to fit against the bottom of the processing groove. Simultaneously, multiple cylinders 3 extend, and the lifting structure 9 retracts, causing multiple molds to... The cavity side plate 4 and the cavity bottom plate 5 can be assembled into an injection cavity in the processing groove of the lower mold 1. Then, the injection operation is performed. After the injection is completed, the upper mold 2 separates from the lower mold 1, and the cylinder 3 retracts, so that multiple cavity side plates 4 slide inside the processing groove. The cavity side plates 4 separate from the injection molded part, which facilitates subsequent ejection. At this time, the upper mold 2 no longer exerts force on the first piston rod 6, and the compressed spring 7 is released, which allows the first piston rod 6 to extend out of the hydraulic oil chamber. This can effectively extract the hydraulic oil inside the oil chamber 12, which allows the second piston rod 11 to extend out of the lifting base 10, thereby raising the cavity bottom plate 5 and performing a lifting operation on the injection molded part.

[0029] The specific real-time examples described herein are preferred real-time examples of this utility model and are not intended to limit the scope of protection of this utility model. Therefore, all equivalent changes made to the structure, shape, and principle of this utility model should be included within the scope of protection of this utility model.

Claims

1. A directional ejection anti-jamming injection mold, comprising a lower mold (1), characterized in that: The lower mold (1) has a processing groove inside, and multiple cavity side plates (4) are slidably installed inside the processing groove. Cylinders (3) are fixedly installed on multiple side surfaces of the lower mold (1). The number and position of the cylinders (3) correspond one-to-one with the number and position of the cavity side plates (4). The telescopic end of the cylinder (3) is fixedly connected to the side surface of the cavity side plate (4). A cavity bottom plate (5) is provided at the bottom of the processing groove inside the lower mold (1). An installation hole is provided on the lower surface of the lower mold (1), and a lifting structure (9) is fixedly installed inside the installation hole. The telescopic end of the lifting structure (9) is fixedly connected to the lower surface of the cavity bottom plate (5).

2. The anti-jamming injection mold for directional ejection according to claim 1, characterized in that: The lifting structure (9) includes a lifting base (10), a second piston rod (11) is slidably installed inside the lifting base (10), an oil cavity (12) is provided inside the lifting base (10), and the upper end of the second piston rod (11) is fixedly connected to the lower surface of the cavity bottom plate (5).

3. The anti-jamming injection mold for directional ejection according to claim 2, characterized in that: The upper surface of the lower mold (1) is provided with multiple hydraulic oil chambers. The bottom of the hydraulic oil chambers is connected to an oil guide pipe (8). The other end of the oil guide pipe (8) is connected to the oil chamber (12) inside the lifting structure (9). The hydraulic oil chambers, the oil guide pipe (8), and the oil chamber (12) are filled with hydraulic oil.

4. The anti-jamming injection mold for directional ejection according to claim 3, characterized in that: The lower mold (1) has a first piston rod (6) slidably installed inside the hydraulic oil chamber. A spring (7) is provided at the bottom of the hydraulic oil chamber, and the other end of the spring (7) abuts against the end face of the first piston rod (6).

5. The anti-jamming injection mold for directional ejection according to claim 1, characterized in that: An upper mold (2) is provided above the lower mold (1).

6. The anti-jamming injection mold for directional ejection according to claim 5, characterized in that: The upper surface of the upper mold (2) is provided with an injection nozzle and an air guide nozzle.

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