Double-insurance water plug of precision mold

Abstract

The utility model discloses a double-insurance water plug of a precision mold, and relates to the technical field of injection molds. The mold comprises a mold body, a cooling pipeline is arranged in the mold body, threads are arranged at the open ends of the cooling pipeline, installation grooves with the same number as the open ends of the cooling pipeline are formed in the peripheral face of the mold body, the installation grooves correspond to the open ends of the cooling pipeline in a one-to-one mode, and plugging pieces are installed in the installation grooves. The cooling pipeline sealing structure has remarkable advantages, the sealing reliability is greatly improved, the water leakage phenomenon is effectively reduced, the production shutdown frequency caused by water leakage is reduced, the injection molding production continuity is guaranteed, the production efficiency is improved, meanwhile, the standard structural design is adopted, and the production cost is reduced. And the plugging piece is easy and convenient to mount and dismount, later mold maintenance and cooling pipeline cleaning are facilitated, and the mold using convenience and economical efficiency are further improved.

Description

Technical Field

[0001] This utility model belongs to the field of injection mold technology, and specifically relates to a double-safety water plug for precision molds. Background Technology

[0002] Injection molds are specialized tools used in the plastic injection molding process. They are used to inject molten plastic into a mold cavity, which then cools and solidifies to obtain the finished product. They are widely used in the production of plastic parts and products, and are particularly suitable for mass production of products with complex geometries and high precision requirements, such as automotive parts, electronic casings, home appliances, and toys.

[0003] In existing technologies, injection molds typically employ linear cooling water channels. Their advantages include simple structure, ease of design and manufacturing, and ease of cleaning and maintenance. However, after the linear cooling water channels are machined according to the design drawings using deep hole drilling, connecting several cooling water channels into a single loop requires plugging the end holes of the water channels. Conventional methods include inserting aluminum or copper rods into the holes and tapping them to achieve a seal, or tapping threads into the end of the holes and then screwing in and tightening a PT plug to achieve a seal. However, these methods can lead to water leakage during processing or use, causing unnecessary production downtime in the injection molding process.

[0004] No effective solutions have yet been proposed to address the problems in the relevant technologies. Utility Model Content

[0005] To solve the above technical problems, this utility model is a precision mold double-insurance water plug, including a mold, a cooling pipe is provided inside the mold, the open end of the cooling pipe is provided with thread, the outer circumference of the mold is provided with the same number of mounting grooves as the open end of the cooling pipe, and the mounting grooves correspond one by one to the open end of the cooling pipe, and a plug is installed in each mounting groove, the plug is used to seal the open end of the cooling pipe.

[0006] The plugging component includes a fixing plate, which is set in the mounting groove. A threaded plug is coaxially installed on one side of the fixing plate. One threaded plug is threaded to the thread of one open end of the cooling pipe. An annular groove is opened on the same side of the fixing plate as the threaded plug, and an O-ring seal is installed in the annular groove.

[0007] The diameter of the end of the plug farther from the fixing plate is smaller than that of the end closer to the fixing plate, so that the plug as a whole is truncated cone shape.

[0008] The O-ring seal is made of a high-temperature resistant elastic material.

[0009] Cooling pipes are evenly distributed inside the mold.

[0010] The outer surface of the fixing plate is provided with snap-fit ​​grooves.

[0011] This utility model has the following beneficial effects:

[0012] Compared to traditional sealing methods that use aluminum or copper rods for expansion or sealing, or simply PT plugs for tightening, this invention offers significant advantages in its cooling pipe sealing structure. Through a dual-seal design of threaded connections and sealing components, it greatly improves sealing reliability, effectively reduces leakage, lowers the frequency of production downtime due to leakage, ensures continuous injection molding production, and improves production efficiency. Furthermore, the standardized structural design makes the plug easy to install and disassemble, facilitating subsequent mold maintenance and cooling pipe cleaning, further enhancing the convenience and economy of mold use.

[0013] Of course, any product implementing this utility model does not necessarily need to achieve all of the above advantages at the same time. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0015] Figure 2 This is a schematic diagram of the internal structure of the mold of this utility model;

[0016] Figure 3 This is a schematic diagram of the plugging component of this utility model;

[0017] Figure 4 This is the second schematic diagram of the plugging component of this utility model.

[0018] Explanation of reference numerals in the attached drawings: 1. Mold; 2. Cooling pipe; 3. Mounting groove; 4. Plug; 5. Fixing plate; 6. Plug; 7. Annular groove; 8. O-ring seal; 9. Snap-fit ​​groove. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the following will be described in conjunction with the appendices of the embodiments of this utility model. Figure 1-4 The technical solutions of the embodiments of this utility model are clearly and completely described herein. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the described embodiments of this utility model are within the protection scope of this utility model.

[0020] Please see Figures 1-4 As shown:

[0021] This embodiment provides a precision mold with double-safety water plugs, including a mold 1. The mold 1 is characterized by having a cooling pipe 2 inside, with threads on the open ends of the cooling pipe 2. The outer circumference of the mold 1 is provided with the same number of mounting grooves 3 as the open ends of the cooling pipe 2, and the mounting grooves 3 correspond one-to-one with the open ends of the cooling pipe 2. A plugging component 4 is installed in each mounting groove 3, and the plugging component 4 is used to seal the open ends of the cooling pipe 2.

[0022] The plugging component 4 includes a fixing plate 5, which is set in the mounting groove 3. A threaded plug 6 is coaxially installed on one side of the fixing plate 5. One threaded plug 6 is threaded to the thread of one open end of the cooling pipe 2. An annular groove 7 is opened on the same side of the fixing plate 5 as the threaded plug 6. An O-ring seal 8 is set in the annular groove 7.

[0023] In practical use, during the assembly of mold 1, the O-ring seal 8 is first embedded into the annular groove 7. A thread-sealing adhesive is then applied to the surface of the plug 6. This thread-sealing adhesive is existing technology and will not be described further. Next, the mounting plate 5, with the assembled O-ring seal 8, is placed in the mounting groove 3 to precisely align the plug 6 with the opening end of the cooling pipe 2. Then, the plug 6 is rotated. Because the threads of the plug 6 match those of the opening end of the cooling pipe 2, as the rotation deepens, the plug 6 gradually screws into the opening end of the cooling pipe 2 until it is tightened, completing the first seal. Since a thread-sealing adhesive was applied to the surface of the plug 6 beforehand, the sealing threads… The adhesive can be screwed into the opening end of the cooling pipe 2 along with the plug 6, evenly filling the thread gap and improving the effect of the first seal. As the plug 6 is tightened, the O-ring seal 8 in the annular groove 7 will be gradually squeezed and deformed by the inner wall of the installation groove 3, thus tightly fitting the outer circumference of the opening end of the cooling pipe 2 and the inner wall of the annular groove 7 of the fixing plate 5, forming the second seal, completing the installation of a single plug 4. Then, following the same steps, the installation of all the plugs 4 at the opening ends of the cooling pipe 2 is completed, so as to improve the sealing effect of the cooling pipe 2 of the mold 1, greatly prevent the leakage of cooling medium, and ensure the stable operation of the cooling system.

[0024] like Figure 2 , Figure 4 As shown, the end of the plug 6 farther from the fixing plate 5 has a smaller diameter than the end closer to the fixing plate 5, so that the plug 6 is shaped like a frustum. With this design, when the plug 6 is screwed into the opening end of the cooling pipe 2, the plug 6, with its frustum shape, is easier to align with the starting position of the thread and is smoothly screwed into the opening end of the cooling pipe 2. As the screwing depth increases, the contact area between the plug 6 and the internal thread of the cooling pipe 2 gradually increases. The larger diameter end of the frustum-shaped plug 6 applies a stronger radial compressive force to the opening end of the cooling pipe 2 until it is tightened, thereby improving the sealing effect.

[0025] like Figure 4As shown, the O-ring seal 8 is made of high-temperature resistant elastic material. The high-temperature resistance of the O-ring seal 8 allows it to maintain good elasticity and sealing performance even when it is in a high-temperature environment, ensuring that the sealing performance of the cooling pipe 2 is not affected by temperature fluctuations.

[0026] like Figure 2 As shown, the cooling pipes 2 are evenly arranged inside the mold 1. The evenly arranged cooling pipes 2 enable the cooling medium to exchange heat evenly with each part of the mold 1, effectively avoiding local overheating or overcooling, improving cooling efficiency and molding quality.

[0027] like Figure 2 , Figure 3 As shown, the outer surface of the fixing plate 5 is provided with a snap-fit ​​groove 9, so that the worker can use a special snap-fit ​​tool, such as a wrench with a protrusion that matches the snap-fit ​​groove 9, to snap the protrusion of the tool into the snap-fit ​​groove 9, and then rotate the tool to drive the fixing plate 5 to rotate so that the plug 6 is gradually tightened with the opening end of the cooling pipe 2, thereby making it easier for the worker to operate and improving work efficiency.

[0028] The working principle of the precision mold double-insurance water plug provided by this utility model is as follows: First, the O-ring seal 8 is embedded in the annular groove 7. Sealing thread adhesive is applied to the surface of the plug 6. The fixing plate 5, with the assembled O-ring seal 8, is placed in the mounting groove 3 to ensure precise alignment of the plug 6 with the opening end of the cooling pipe 2. An external tool is inserted into the snap-fit ​​groove 9. By rotating the external tool, the fixing plate 5 and the plug 6 are rotated. Because the threads of the plug 6 match those of the opening end of the cooling pipe 2, as the rotation deepens, the plug 6 gradually screws into the opening end of the cooling pipe 2. The contact area between the plug 6 and the internal threads of the cooling pipe 2 gradually increases, and the larger diameter end of the frustum-shaped plug 6 applies more pressure to the opening end of the cooling pipe 2. A strong radial extrusion force is applied until the plug is tightened, thus completing the first seal. Since the thread sealant is pre-applied to the surface of the plug 6, it can be screwed into the opening end of the cooling pipe 2 along with the plug 6, evenly filling the thread gap and improving the effect of the first seal. As the plug 6 is tightened, the O-ring seal 8 in the annular groove 7 is gradually squeezed and deformed by the inner wall of the mounting groove 3, thus tightly fitting the outer circumference of the opening end of the cooling pipe 2 and the inner wall of the annular groove 7 of the fixing plate 5, forming the second seal, thus completing the installation of a single plug 4. Then, following the same steps, the installation of all the opening end plugs 4 of the cooling pipe 2 is completed, so as to improve the sealing effect of the cooling pipe 2 of the mold 1.

[0029] Furthermore, it should be noted that, in the description of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0030] The above description is the preferred embodiment of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this utility model, and these improvements and modifications should also be considered within the protection scope of this utility model.

Claims

1. A precision mold double safety water stop comprising a mold (1), characterized in that, The mold (1) is internally provided with cooling pipes (2), the opening ends of the cooling pipes (2) are provided with threads, the outer circumferential surface of the mold (1) is provided with mounting grooves (3) with the same number as the opening ends of the cooling pipes (2), the mounting grooves (3) one-to-one correspond to the opening ends of the cooling pipes (2), and the mounting grooves (3) are internally mounted with plug members (4) for sealing the opening ends of the cooling pipes (2); The plug member (4) comprises a fixed plate (5) arranged in the mounting groove (3), one side of the fixed plate (5) is coaxially mounted with a plug screw (6), one plug screw (6) is threadedly connected to the thread of one opening end of the cooling pipe (2), and an annular ring groove (7) is formed on the same side of the fixed plate (5) as the plug screw (6), and the annular ring groove (7) is internally provided with an O-shaped sealing member (8).

2. A precision mold double insurance water stop according to claim 1, characterized in that, The plug screw (6) is smaller in diameter at the end far from the fixed plate (5) than at the end close to the fixed plate (5), so that the plug screw (6) is in the shape of a circular truncated cone as a whole.

3. A precision mold double insurance water stop according to claim 2, characterized in that, The O-shaped sealing member (8) is made of high-temperature-resistant elastic material.

4. A precision mold double insurance water stop according to claim 1, characterized in that, The cooling pipes (2) are uniformly arranged in the mold (1).

5. A precision mold dual insurance water stop according to claim 1, characterized in that, The outer surface of the fixed plate (5) is provided with a clamping groove (9).

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