Heat insulation forming die for spike tooth metal shell

Abstract

The utility model relates to the technical field of dies, in particular to a nail tooth metal shell heat insulation forming die. According to the technical scheme, the forming die comprises a forming core die, a forming male die, a forming female die, a heat insulation layer, a forming cylinder and a metal shell, the forming male die is used for forming the inner shape size of the heat insulation layer and is matched with the forming core die and the forming female die through positioning holes or positioning pins, and the forming female die is used for restraining the forming cylinder and preventing the metal shell from deforming in the forming process; and the heat insulation layer is pre-formed into a step-shaped structure matched with the forming core mold and is bonded with the metal shell through an integral forming process. According to the utility model, the constraint of the forming cylinder on the outer side of the shell is increased, the forming process is simplified, the processing steps are reduced, the production efficiency is obviously improved, and compared with the traditional process, the heat insulation forming of the metal shell can be completed in a shorter time, and the production cost is reduced.

Description

Technical Field

[0001] This utility model relates to the field of mold technology, and in particular to a heat insulation forming mold for a nail-tooth metal shell. Background Technology

[0002] Traditional metal shells with spikes have relatively thin walls, and the inner insulation layer is usually made of EPDM or nitrile rubber. Traditional manufacturing processes typically involve pre-molding the metal shell with machining allowances, then molding the insulation layer, and finally machining the external dimensions; or molding the insulation layer first and then bonding it to the shell. These methods have the following problems:

[0003] 1. The molding process is complex and inefficient. In traditional processes, the metal shell must first be pre-molded with a machining allowance, followed by the molding of the insulation layer, and then the external dimensions are machined. This process is time-consuming and can easily lead to shell deformation.

[0004] 2. During the later machining of the outer shape, coolant should not be added, as the shell is prone to overheating, which can cause the insulation layer to detach and result in scrap.

[0005] 3. The insulation layer is bonded to the shell. Since the insulation layer is pre-formed, the dimensions after bonding are difficult to guarantee, which affects the product quality. Utility Model Content

[0006] The purpose of this invention is to address the problems existing in the background technology by proposing a nail-tooth metal shell insulation molding mold that simplifies the molding process, improves product precision, and avoids the debonding of the insulation layer.

[0007] The technical solution of this utility model: a heat-insulating forming mold for a nail-tooth metal shell, comprising:

[0008] Molding core mold, molding male mold, molding female mold, insulation layer, molding cylinder and metal shell;

[0009] A forming male mold is set in the center of the mold, and its outer surface matches the inner shape of the insulation layer;

[0010] A core mold is nested inside a male mold, and its end has a stepped structure for the insulation layer step.

[0011] The forming female mold covers the outside of the forming cylinder, and its inner wall forms a clearance fit with the outer wall of the forming cylinder to limit the radial deformation of the forming cylinder.

[0012] A molded cylindrical body is fitted onto the outside of a metal shell, and a rectangular groove corresponding to the spike teeth of the metal shell is opened on its inner side.

[0013] The insulation layer is pre-formed into a stepped shape and adhered to the surface of the molding core mold;

[0014] The molding core mold, molding male mold, and molding female mold are coaxially arranged, and the molding cylinder forms an avoidance fit with the nail tooth area of ​​the metal shell through a rectangular groove.

[0015] Optionally, the insulation layer is a pre-formed ceramic fiber or aerogel composite material, which is bonded to the metal shell in one step through a molding process, and the surface of the molding core mold is provided with an anti-stick coating.

[0016] Optionally, the mold integrates a heating element to control the temperature during the molding process and prevent the insulation layer from delaminating due to overheating of the metal shell.

[0017] Optionally, the molding core mold is provided with a positioning mechanism, which increases the gap between the molding core mold and the molding male mold and improves the coaxiality between the molding core mold and the molding male mold.

[0018] Optionally, the positioning mechanism includes an installation groove and a placement groove disposed within the molding core mold. Multiple positioning blocks are slidably installed in the placement groove. A connecting shaft is fixedly installed on each positioning block. The connecting shaft extends into the installation groove. A drive disk is rotatably installed in the installation groove. Multiple connecting rods are rotatably installed on the drive disk, so that the connecting rods are compared and rotatably connected to the connecting shaft one by one.

[0019] Optionally, a drive shaft is fixedly mounted on the drive disk, a hexagonal bolt is fixedly mounted on the drive shaft, and a limiting component for limiting the drive shaft is installed inside the molding core mold.

[0020] Optionally, the limiting component includes a limiting groove disposed inside the molding core mold, a first sealing plate is fixedly installed in the limiting groove, and a second sealing plate is fixedly installed on the drive shaft. The first and second sealing plates divide the limiting groove into two limiting cavities. A connecting pipe is fixedly installed in each of the two limiting cavities. The two connecting pipes are connected by a valve. The limiting cavities, connecting pipes, and valves are all filled with hydraulic medium.

[0021] In summary, this application includes at least one of the following beneficial technical effects:

[0022] 1. Simplified molding process and improved work efficiency: By increasing the constraint of the molding cylinder on the outside of the shell, this invention simplifies the molding process, reduces processing steps, and thus significantly improves production efficiency. Compared with traditional processes, this invention can complete the heat insulation molding of the metal shell in a shorter time, reducing production costs;

[0023] 2. Ensuring no deformation on the outer side of the shell and improving product dimensional accuracy: This invention ensures that the outer side of the shell does not deform during the molding process by controlling the molding process, thereby guaranteeing the product's dimensional accuracy. This advantage is particularly important for metal shells with high precision requirements and helps improve product quality.

[0024] 3. Prevents insulation layer delamination and reduces scrap rate. Because the insulation layer is formed in one piece without subsequent machining, this invention effectively avoids the problem of insulation layer delamination caused by heat generation during shell processing. This not only reduces the product scrap rate but also reduces the waste of raw materials and energy, which is conducive to sustainable development.

[0025] 4. Improved thermal insulation performance: This invention optimizes the bonding process of the insulation layer, ensuring a tight bond between the insulation layer and the shell, thus improving thermal insulation performance. This is of great significance for the application of metal shells in harsh environments such as high temperature and high pressure, helping to extend product lifespan and reduce maintenance costs.

[0026] In summary, this utility model is highly adaptable, cost-effective, and suitable for heat insulation molding of nail-tooth metal shells of various specifications and shapes, thus possessing wide applicability. Furthermore, the simple structure and convenient operation of the molding die facilitate automated production, further improving production efficiency. Optimized molding processes reduce the consumption of raw materials and energy, thereby lowering production costs. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the structure of an insulated molding die;

[0028] Figure 2 Schematic diagram of the positioning mechanism Figure 1 ;

[0029] Figure 3 Schematic diagram of the positioning mechanism Figure 2 ;

[0030] Figure 4 This is a schematic diagram of the limit component.

[0031] Reference numerals: 1. Molding core mold; 2. Molding male mold; 3. Molding female mold; 4. Insulation layer; 5. Molding cylinder; 6. Metal shell; 7. Rectangular groove; 8. Mounting groove; 9. Placement groove; 10. Positioning block; 11. Connecting shaft; 12. Drive disc; 13. Drive shaft; 14. Hex bolt; 15. Limiting groove; 16. First sealing plate; 17. Second sealing plate; 18. Limiting cavity; 19. Connecting pipe; 20. Valve; 21. Connecting rod. Detailed Implementation

[0032] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0033] Example 1, such as Figure 1As shown, the present invention proposes a nail-tooth metal shell heat insulation forming mold, including a forming core mold 1, a forming male mold 2, a forming female mold 3, a heat insulation layer 4, a forming cylinder 5, and a metal shell 6. The metal shell 6 is a structural component used for product connection. The forming male mold 2 is used to form the inner shape of the heat insulation layer and cooperates with the forming core mold 1 and the forming female mold 3 through positioning holes or positioning pins. The forming male mold 2 plays a positioning structure role to ensure the assembly accuracy of the mold. The forming core mold 1 is used to form the steps of the heat insulation layer and ensures the assembly accuracy of the mold through its positioning relationship with the forming female mold 3 and the forming male mold 2.

[0034] Furthermore, the forming female mold 3 is used to constrain the forming cylinder 5 and prevent the metal shell 6 from deforming during the forming process. A rectangular groove 7 is opened on the inner side of the forming cylinder 5. The rectangular groove 7 is used to avoid the spiked area of ​​the metal shell 6 and forms a mating relationship with the metal shell 6 to constrain its shape.

[0035] Among them, the heat insulation layer 4 is pre-formed into a stepped structure that matches the molding core mold. The heat insulation layer 4 protects the product from failure due to excessive internal temperature. The heat insulation layer 4 is bonded to the metal shell 6 through an integral molding process. The heat insulation layer 4 is a pre-formed ceramic fiber or aerogel composite material, which is bonded to the metal shell in one step through a molding process. The surface of the molding core mold 1 is provided with an anti-stick coating.

[0036] It is worth noting that the mold integrates a heating element to control the temperature during the molding process and prevent the insulation layer from debonding due to overheating of the metal shell 6.

[0037] Example 2, as Figures 2 to 4 As shown, based on Embodiment 1, the molding core mold 1 is equipped with a positioning mechanism. The positioning mechanism increases the gap between the molding core mold 1 and the molding male mold 2 and improves the coaxiality of the molding core mold 1 and the molding male mold 2. During assembly, the molding core mold 1 and the molding male mold 2 need to be combined, and a high degree of coaxiality needs to be maintained to ensure positioning accuracy. This makes the outer diameter of the molding core mold 1 and the inner diameter of the molding male mold 2 consistent, which will increase the friction between the molding core mold 1 and the molding male mold 2, thereby increasing the resistance during assembly and making assembly difficult. Furthermore, when the axes of the molding core mold 1 and the molding male mold 2 are offset, that is, when the axes are not parallel to each other, the molding core mold 1 and the molding male mold 2 will jam. This problem can be avoided by increasing the gap between the molding core mold 1 and the molding male mold 2. The positioning mechanism can ensure the coaxiality between the molding core mold 1 and the molding male mold 2, thereby reducing the assembly difficulty and ensuring positioning accuracy.

[0038] Furthermore, the positioning mechanism includes an installation groove 8 and a placement groove 9 located within the molding core mold 1. Multiple positioning blocks 10 are slidably installed in the placement groove 9, and a connecting shaft 11 is fixedly installed on each positioning block 10. The connecting shaft 11 extends into the installation groove 8, and a drive disk 12 is rotatably installed within the installation groove 8. Multiple connecting rods 21 are rotatably installed on the drive disk 12, allowing each connecting rod 21 to be rotated and connected to the connecting shaft 11. Rotating the drive disk 12 drives the multiple connecting rods 21 to rotate, which in turn drives the positioning blocks 10 to move. This allows the multiple positioning blocks to contract or expand relative to each other. When the positioning blocks 10 contract, they do not contact the molding male mold 2, facilitating the assembly of the molding male mold 2. When the bottom of the molding male mold 2 abuts against the molding core mold 1, the expansion of the multiple positioning blocks 10 causes them to abut against the inner wall of the molding male mold 2, pushing the molding male mold 2 to a position coaxial with the molding core mold 1, thus ensuring accurate positioning.

[0039] The drive shaft 13 is fixedly installed on the drive disc 12, and a hexagonal bolt 14 is fixedly installed on the drive shaft 13. With the setting of the hexagonal bolt 14, the drive shaft 13 can be rotated by a wrench, which in turn drives the drive disc 12 to rotate, thus achieving the effect of saving effort. A limiting component is installed in the molding core mold 1 to limit the drive shaft 13. After the molding male mold 2 is positioned by multiple positioning blocks 10, the position of the positioning blocks 10 can be limited by the limiting component to prevent the position of the molding male mold 2 from changing.

[0040] Furthermore, the limiting component includes a limiting groove 15 located inside the molding core mold 1. A first sealing plate 16 is fixedly installed inside the limiting groove 15, and a second sealing plate 17 is fixedly installed on the drive shaft 13. The first sealing plate 16 and the second sealing plate 17 divide the limiting groove 15 into two limiting cavities 18. A connecting pipe 19 is fixedly installed in each of the two limiting cavities 18. The two connecting pipes 19 are connected by a valve 20. The limiting cavities 18, the connecting pipes 19, and the valve 20 are all filled with hydraulic medium. The hydraulic medium is a liquid that cannot be compressed under working conditions. When the drive shaft 13 rotates, it will drive the second sealing plate 17 to rotate, thereby... The volume of the two limiting chambers 18 changes, reducing the volume of one limiting chamber 18 and increasing the volume of the other limiting chamber 18. At this time, the hydraulic medium between the two limiting chambers 18 can flow between them through the connecting pipe 19 and the valve 20. When the valve 20 is closed, the hydraulic medium inside the two limiting chambers 18 can no longer be exchanged. If the drive shaft 13 continues to rotate, the second sealing plate 17 needs to compress the hydraulic medium, which is not possible in the working environment. Therefore, the drive shaft 13 can be limited and fixed. Thus, the positioning block 10 can be limited by controlling the opening and closing of the valve 20.

[0041] The working principle of this embodiment is as follows: rotating the drive disk 12 can drive multiple connecting rods 21 to rotate. Through the transmission of the connecting rods 21, the positioning blocks 10 can be moved, allowing multiple positioning blocks to contract or expand relative to each other. When the positioning blocks 10 contract, they will not contact the forming male mold 2, facilitating the assembly of the forming male mold 2. When the bottom of the forming male mold 2 abuts against the forming core mold 1, the multiple positioning blocks 10 expand, allowing them to abut against the inner wall of the forming male mold 2 and push the forming male mold 2 to a position coaxial with the forming core mold 1, thus achieving accurate positioning.

[0042] The above specific embodiments are merely several optional embodiments of this utility model. Based on the technical solution of this utility model and the relevant teachings of the above embodiments, those skilled in the art can make various alternative improvements and combinations to the above specific embodiments.

Claims

1. A pin-to-metal shell heat forming die, characterized by, include: The molding core mold (1), molding male mold (2), molding female mold (3), heat insulation layer (4), molding cylinder (5) and metal shell (6); A forming male mold (2) is set in the center of the mold, and its outer surface matches the inner shape of the insulation layer (4); The molding core mold (1) is nested inside the molding male mold (2), and its end is provided with a stepped structure for the heat insulation layer (4) step; A molding female mold (3) is wrapped around the outside of the molding cylinder (5), and its inner wall forms a clearance fit with the outer wall of the molding cylinder (5) to limit the radial deformation of the molding cylinder (5). A molded cylindrical body (5) is fitted onto the outside of a metal shell (6), and a rectangular groove corresponding to the nail teeth of the metal shell (6) is opened on its inner side; The heat insulation layer (4) is pre-formed into a stepped shape and attached to the surface of the molding core mold (1); The molding core mold (1), molding male mold (2), and molding female mold (3) are coaxially arranged, and the molding cylinder (5) forms an avoidance fit with the nail tooth area of ​​the metal shell (6) through a rectangular groove.

2. The die-cast metal shell heat forming die according to claim 1, wherein The insulation layer (4) is a pre-formed ceramic fiber or aerogel composite material, which is bonded to the metal shell in one step by a molding process. The surface of the molding core mold (1) is provided with an anti-stick coating.

3. The die-cast metal shell forming die of claim 1 wherein, The mold integrates a heating element to control the temperature during the molding process and prevent the insulation layer from delaminating due to overheating of the metal shell (6).

4. The die-cast metal shell forming die of claim 1 wherein, The molding core mold (1) is provided with a positioning mechanism, which increases the gap between the molding core mold (1) and the molding male mold (2) and improves the coaxiality of the molding core mold (1) and the molding male mold (2).

5. The heat-insulating forming mold for a toothed metal shell according to claim 4, characterized in that, The positioning mechanism includes an installation groove (8) and a placement groove (9) located in the molding core mold (1). Multiple positioning blocks (10) are slidably installed in the placement groove (9). A connecting shaft (11) is fixedly installed on the positioning block (10). The connecting shaft (11) extends into the installation groove (8). A drive disk (12) is rotatably installed in the installation groove (8). Multiple connecting rods (21) are rotatably installed on the drive disk (12). The connecting rods (21) are compared and rotatably connected to the connecting shaft (11) one by one.

6. The swaged metal shell heat forming die of claim 5, wherein, A drive shaft (13) is fixedly installed on the drive disk (12), and a hexagonal bolt (14) is fixedly installed on the drive shaft (13). A limiting component for limiting the drive shaft (13) is installed inside the molding core mold (1).

7. The swaged metal shell heat forming die of claim 6, wherein, The limiting component includes a limiting groove (15) disposed inside the molding core mold (1). A first sealing plate (16) is fixedly installed in the limiting groove (15), and a second sealing plate (17) is fixedly installed on the drive shaft (13). The first sealing plate (16) and the second sealing plate (17) divide the limiting groove (15) into two limiting cavities (18). A connecting pipe (19) is fixedly installed in each of the two limiting cavities (18). The two connecting pipes (19) are connected through a valve (20). The limiting cavities (18), the connecting pipes (19), and the valve (20) are all filled with hydraulic medium.

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