A high-sealing negative pressure molding die

Abstract

This utility model discloses a high-sealing negative pressure molding die, including a lower die and an upper die. The upper end of the lower die has a sealing groove, and the lower end of the upper die has a buffer movable slot. Guide stabilizing rods are fixedly connected to the four corners of the inner wall of the buffer movable slot. In this high-sealing negative pressure molding die, when the upper die overlaps with the lower die, the sealing protrusion is inserted into the inner side of the sealing groove, and a fluororubber sealing ring is on the outer wall of the sealing protrusion, which enhances the sealing performance between the sealing protrusion and the sealing groove. This effectively prevents air leakage and ensures that the die maintains a stable vacuum state under negative pressure. This helps improve the quality and consistency of the molded product and reduces product defects caused by air leakage, thereby reducing the scrap rate. An inner limiting buffer plate is sleeved on the outer wall of the guide stabilizing rod through a stabilizing guide hole, which enhances the guiding stability of the sealing protrusion.

Description

Technical Field

[0001] This utility model relates to the technical field of negative pressure forming molds, specifically a high-sealing negative pressure forming mold. Background Technology

[0002] Negative pressure molding is a type of mold that uses negative pressure technology to shape materials into specific shapes. This technology is widely used in the molding process of various materials such as plastics, glass, and metals. During manufacturing, the material is placed in the mold, and the air inside the mold is extracted by a vacuum pump to create negative pressure. Under the action of negative pressure, the material adheres tightly to the surface of the mold and forms the desired shape. It plays an important role in modern industrial production, especially in the molding and processing of materials such as plastics, glass, and metals, and has broad application prospects.

[0003] The key to negative pressure molding is to form a sealed cavity. By using a vacuum device to extract the air from the cavity, negative pressure is formed. If there is a gap between the upper and lower molds, air will continuously enter the cavity from the outside, making it impossible to form an effective negative pressure, affecting the mold-locking effect, and potentially causing the mold to loosen during injection molding, affecting the quality of the finished product and bringing certain adverse effects to the user experience. To address this, we propose a highly airtight negative pressure molding mold. Utility Model Content

[0004] Technical Problem Solved: Addressing the shortcomings of existing technologies, this utility model provides a high-sealing negative pressure molding die, offering advantages such as enhanced sealing and reduced scrap rate. When the upper and lower molds overlap, the sealing protrusion inserts into the inner side of the sealing groove, and the fluororubber sealing ring on the outer wall of the sealing protrusion strengthens the sealing between the sealing protrusion and the sealing groove, effectively preventing air leakage and ensuring the mold maintains a stable vacuum state under negative pressure. This helps improve the quality and consistency of the molded products, while reducing product defects caused by air leakage, thereby lowering the scrap rate. The inner limiting buffer plate, sleeved on the outer wall of the guide stabilizing rod through a stabilizing guide hole, enhances the guiding stability of the sealing protrusion. The buffer damper and buffer elastic element at the upper end of the inner limiting buffer plate provide a certain tension, playing a buffering role. When the sealing protrusion and the upper mold move synchronously, the insertion of the sealing protrusion into the inner side of the sealing groove provides a certain buffering effect, reducing impact force and mitigating damage caused by impact within a certain range, effectively solving the problems in the background technology.

[0005] Technical solution: To achieve the above objectives, the technical solution adopted by this utility model is as follows: a high-sealing negative pressure forming mold, including a lower mold and an upper mold, wherein a sealing groove is provided at the upper end of the lower mold, and a buffer movable slot is provided at the lower end of the upper mold, and guide stabilizing rods are fixedly connected to the four corners of the inner wall of the buffer movable slot.

[0006] Preferably, both ends of the guide stabilizer are fixedly connected to the four corners of the inner wall of the buffer movable slot.

[0007] Preferably, an inner limiting buffer plate is movably connected to the inner wall of the buffer slot. Stable guide holes are provided at the four corners of the inner wall of the inner limiting buffer plate. Buffer dampers and buffer elastic members are uniformly positioned at the upper end of the inner limiting buffer plate, and the buffer dampers are located inside the buffer elastic members.

[0008] Preferably, a sealing protrusion is fixedly connected to the lower end of the inner limiting buffer plate, and a fluororubber sealing ring is fixedly connected to the outer wall of the sealing protrusion.

[0009] Preferably, the inner limiting buffer plate is sleeved on the outer wall of the guide stabilizing rod through the stabilizing guide hole, the lower ends of the buffer damper and the buffer elastic element are fixedly connected to the upper end of the inner limiting buffer plate, and the upper ends of the buffer damper and the buffer elastic element are fixedly connected to the upper end of the inner wall of the buffer movable slot.

[0010] Preferably, the lower end of the inner limiting buffer plate is fixedly connected to the upper end of the sealing protrusion, and one side of the fluororubber sealing ring is positioned by bonding with the outer wall of the sealing protrusion using strong adhesive.

[0011] Beneficial Effects: Compared with the prior art, this utility model provides a high-sealing negative pressure molding die with the following beneficial effects: When the upper die and lower die overlap, the sealing protrusion is inserted into the inner side of the sealing groove, and the fluororubber sealing ring is on the outer wall of the sealing protrusion, which can enhance the sealing between the sealing protrusion and the sealing groove, effectively preventing air leakage and ensuring that the die maintains a stable vacuum state under negative pressure. This helps to improve the quality and consistency of the molded products, and at the same time, reduces product defects caused by air leakage, thereby reducing the scrap rate. The inner limit buffer plate is sleeved on the outer wall of the guide stabilizer rod through the stable guide hole, which can enhance the guiding stability of the sealing protrusion. The buffer damper and buffer elastic element at the upper end of the inner limit buffer plate can provide a certain tension, which can play a buffering role. When the sealing protrusion and the upper die move synchronously, the sealing protrusion inserted into the inner side of the sealing groove will have a certain buffering effect, reducing the impact force and reducing the damage caused by the impact within a certain range. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of a high-sealing negative pressure molding mold according to the present invention.

[0013] Figure 2 This is a schematic diagram of the flipping of the upper mold in a high-sealing negative pressure molding mold according to this utility model.

[0014] Figure 3This is a schematic diagram showing the flipping and disassembly of the sealing protrusion and the upper mold in a high-sealing negative pressure molding mold according to this utility model.

[0015] Figure 4 This is a schematic plan view of the internal structure of the upper mold in a high-sealing negative pressure molding mold of this utility model.

[0016] In the diagram: 1. Lower mold; 2. Upper mold; 3. Sealing groove; 4. Buffer movable slot; 5. Guide stabilizer rod; 6. Inner limit buffer plate; 7. Stabilizing guide hole; 8. Buffer damper; 9. Buffer elastic element; 10. Sealing protrusion; 11. Fluororubber sealing ring. Detailed Implementation

[0017] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0018] like Figure 1-4 As shown, a high-sealing negative pressure molding mold includes a lower mold 1 and an upper mold 2. The upper end of the lower mold 1 is provided with a sealing groove 3, and the lower end of the upper mold 2 is provided with a buffer movable slot 4. Guide stabilizing rods 5 are fixedly connected to the four corners of the inner wall of the buffer movable slot 4. The buffer movable slot 4 can absorb part of the impact force when the upper mold 2 and the lower mold 1 are closed, reduce the direct collision between the molds, extend the service life of the mold, and improve the stability of the molding process.

[0019] Furthermore, both ends of the guide stabilizer 5 are fixedly connected to the four corners of the inner wall of the buffer movable slot 4, which can effectively prevent the guide stabilizer 5 from tilting or shifting during operation and maintain stability when subjected to external forces, thereby improving the stability of the entire buffer device.

[0020] Furthermore, an inner limiting buffer plate 6 is movably connected to the inner wall of the buffer slot 4. Stable guide holes 7 are provided at the four corners of the inner wall of the inner limiting buffer plate 6. Buffer dampers 8 and buffer elastic members 9 are evenly positioned at the upper end of the inner limiting buffer plate 6, with the buffer dampers 8 located inside the buffer elastic members 9. The combination of buffer dampers 8 and buffer elastic members 9 can effectively absorb and disperse impact energy. Buffer dampers 8 are usually used to provide damping force to reduce impact speed, while buffer elastic members 9 provide elastic restoring force to help the buffer plate reset. This combination can achieve more effective buffering and reduce impact and damage to the equipment.

[0021] Furthermore, a sealing protrusion 10 is fixedly connected to the lower end of the inner limiting buffer plate 6, and a fluororubber sealing ring 11 is fixedly connected to the outer wall of the sealing protrusion 10. The fluororubber sealing ring 11 has excellent sealing performance and can effectively prevent dust, moisture and other impurities from entering the buffer device, keep the inside clean and extend the service life of the equipment.

[0022] Furthermore, the inner limiting buffer plate 6 is sleeved on the outer wall of the guide stabilizing rod 5 through the stabilizing guide hole 7. The lower ends of the buffer damper 8 and the buffer elastic member 9 are fixedly connected to the upper end of the inner limiting buffer plate 6, and the upper ends of the buffer damper 8 and the buffer elastic member 9 are fixedly connected to the upper end of the inner wall of the buffer movable slot 4. The cooperation between the guide stabilizing rod 5 and the stabilizing guide hole 7 can ensure the stable movement of the inner limiting buffer plate 6 in the vertical direction, prevent it from shifting or tilting when subjected to external force, thereby improving the stability of the entire structure.

[0023] Furthermore, the lower end of the inner limiting buffer plate 6 is fixedly connected to the upper end of the sealing protrusion 10, and one side of the fluororubber sealing ring 11 is bonded and positioned to the outer wall of the sealing protrusion 10 with strong adhesive, which can form a good sealing effect and prevent liquid or gas from leaking from the gap. Fluororubber has excellent chemical corrosion resistance and high temperature resistance, and is suitable for a variety of harsh environments.

[0024] Working Principle: A high-sealing negative pressure molding die, when in use, pushes the upper die 2 to overlap with the lower die 1 via a hydraulic cylinder. The sealing protrusion 10 is inserted into the inner side of the sealing groove 3. The fluororubber sealing ring 11 on the outer wall of the sealing protrusion 10 can enhance the sealing between the sealing protrusion 10 and the sealing groove 3, effectively preventing air leakage and ensuring that the die maintains a stable vacuum state under negative pressure. This helps improve the quality and consistency of the molded products, while reducing product defects caused by air leakage, thereby reducing the scrap rate. The inner limit buffer plate 6 is sleeved on the outer wall of the guide stabilizing rod 5 through the stabilizing guide hole 7, which can enhance the guiding stability of the sealing protrusion 10. The buffer damper 8 and the buffer elastic element 9 at the upper end of the inner limit buffer plate 6 can provide a certain tension, which can play a buffering role. When the sealing protrusion 10 and the upper die 2 move synchronously, the sealing protrusion 10 inserted into the inner side of the sealing groove 3 will have a certain buffering effect, reducing the impact force and reducing the damage caused by the impact within a certain range.

[0025] It should be noted that, in this document, relational terms such as first and second (number one, number two), etc., are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0026] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A high-sealing negative pressure molding die, comprising a lower die (1) and an upper die (2), characterized in that: The lower mold (1) has a sealing groove (3) at its upper end, and the upper mold (2) has a buffer movable slot (4) at its lower end. Guide stabilizing rods (5) are fixedly connected to the four corners of the inner wall of the buffer movable slot (4).

2. The high-sealing negative pressure forming mold according to claim 1, characterized in that: Both ends of the guide stabilizer (5) are fixedly connected to the four corners of the inner wall of the buffer movable slot (4).

3. The high-sealing negative pressure forming mold according to claim 2, characterized in that: The inner wall of the buffer slot (4) is movably connected to an inner limiting buffer plate (6). Stable guide holes (7) are provided at the four corners of the inner wall of the inner limiting buffer plate (6). A buffer damper (8) and a buffer elastic member (9) are uniformly positioned at the upper end of the inner limiting buffer plate (6), and the buffer damper (8) is located inside the buffer elastic member (9).

4. The high-sealing negative pressure forming mold according to claim 3, characterized in that: The lower end of the inner limiting buffer plate (6) is fixedly connected to a sealing protrusion (10), and the outer wall of the sealing protrusion (10) is fixedly connected to a fluororubber sealing ring (11).

5. The high-sealing negative pressure forming mold according to claim 4, characterized in that: The inner limiting buffer plate (6) is sleeved on the outer wall of the guide stabilizing rod (5) through the stabilizing guide hole (7). The lower ends of the buffer damper (8) and the buffer elastic member (9) are fixedly connected to the upper end of the inner limiting buffer plate (6). The upper ends of the buffer damper (8) and the buffer elastic member (9) are fixedly connected to the upper end of the inner wall of the buffer movable slot (4).

6. The high-sealing negative pressure forming mold according to claim 5, characterized in that: The lower end of the inner limiting buffer plate (6) is fixedly connected to the upper end of the sealing protrusion (10), and one side of the fluororubber sealing ring (11) is attached and positioned to the outer wall of the sealing protrusion (10) by strong adhesive.

Images