A plastic lining mold for large-size elbow pipe fittings

Abstract

The utility model discloses a large-size elbow pipe lining mold, which relates to the field of mold technology and includes a mold main body, a mold core, a drain port and a guide plate. The mold main body is provided with two, and the mold core is arranged inside the two mold main bodies. A groove is arranged on the inner side of the mold main body, and the groove is connected with one end of the bottom of the injection molding tube. The other sides of the two mold main bodies are welded to the telescopic end of the hydraulic rod. A water inlet is arranged on one side of the top of the mold main body, and cooling water enters the two mold main bodies through the water inlet, so as to cool the mold main body, which is beneficial for the mold main body to be able to cool down quickly. At the same time, a vortex-shaped guide plate is arranged inside the mold main body, so that the mold main body can transfer the temperature to the guide plate, thereby improving the heat exchange surface of the mold main body, improving the cooling effect of the mold main body and thus improving the shaping efficiency of the pipe fittings.

Description

Technical Field

[0001] The utility model relates to the technical field of molds, in particular to a large-size elbow pipe fitting lining plastic mold. Background Art

[0002] Most of the existing elbow pipe fittings are made by injection molding, which is done by injecting materials into a mold and then cooling them into shape. After searching, the Chinese patent authorization number CN114571673B discloses a plastic-lined mold for elbow pipe fittings. Although the inner lining socket of the plastic-lined elbow pipe fitting prepared by the mold is coaxial with the connected plastic-lined pipe, which improves the qualified rate of the plastic-lined elbow pipe fitting products and increases the service life, the mold cools down slowly after injection molding, which results in a long molding time for the mold after injection molding. It is necessary to wait for the pipe fittings inside the mold to be completely cooled before molding can be completed, thereby reducing production efficiency. Utility Model Content

[0003] In view of the deficiencies of the prior art, the utility model provides a large-size elbow pipe lining mold, which solves the problem of slow cooling speed and long cooling and shaping time of the prior mold after injection molding mentioned in the background art.

[0004] To achieve the above objectives, the utility model is implemented through the following technical solutions: a large-size elbow pipe lining mold, including a mold body, a mold core, a drain port and a guide plate, the mold body is provided with two, the mold core is arranged inside the two mold bodies, a groove is arranged on the inner side of the mold body, and the groove is connected to one end of the bottom of the injection tube, the other side of the two mold bodies is welded to the telescopic end of the hydraulic rod, a water inlet is arranged on one side of the top of the mold body, and a drain port is arranged on one side of the bottom of the mold body, a cooling pipe is interspersed inside the mold core, and two cooling pipes are arranged.

[0005] Preferably, two mold cores are provided, the angle between the two mold cores is ninety degrees, and one end of the two mold cores is tightly fitted to each other. There is a gap between the outer wall of the mold core and the inner wall of the mold body. The mold core is fixed by external equipment and is used for molding the inner wall of the pipe fitting.

[0006] Preferably, the interior of the mold body is a hollow structure, and guide plates are provided inside both mold bodies. The guide plates are spiral-shaped, and there is a gap between the guide plates and the inner wall of one side of the mold body. The spiral shape helps to increase the contact surface of the guide plates with the cooling water in a smaller space.

[0007] Preferably, the guide plate is made of a copper-aluminum composite material, which has good thermal conductivity, thereby facilitating heat exchange between the guide plate and the cooling water, thereby facilitating improving the cooling effect of the cooling water.

[0008] Preferably, the cooling pipe inside the mold core is of a hollow structure, and both ends of the cooling pipe are connected to each other. The middle part of the cooling pipe is of a spiral structure. The spiral cooling pipe can extend the travel of cooling water inside the mold core, thereby facilitating sufficient heat exchange and cooling of the cooling water with the mold core.

[0009] The utility model provides a large-size elbow pipe lining plastic mold. It has the following beneficial effects:

[0010] (1) A large-size elbow pipe lining mold, when in use, the mold body is pushed to close the mold through two hydraulic rods, and then injection molding can be performed through the injection tube, so that the material can be injected into the cavity between the mold body and the mold core. Cooling water enters the two mold bodies through the water inlet, thereby cooling the mold bodies, which is conducive to the rapid cooling of the mold bodies. At the same time, a vortex-shaped guide plate is arranged inside the mold body, so that the mold body can transfer the temperature to the guide plate, thereby increasing the heat exchange surface of the mold body, improving the cooling effect of the mold body and thus improving the shaping efficiency of the pipe fittings.

[0011] (2) In this large-size elbow pipe lining mold, two mold cores are provided with external driving equipment to be pushed into the interior of the mold core body. After the injection molding is completed, cooling water can enter the interior of the cooling pipe through one end of the cooling pipe for circulation, and then the mold core can be cooled by heat exchange through the cooling water. The mold core is cooled, so that the mold core can cool and shape the inner wall of the pipe fitting, thereby improving the shaping efficiency of the pipe fitting, which is conducive to the synchronous and uniform cooling and shaping of the inner wall and the outer wall of the pipe fitting, thereby solving the problem of slow cooling speed and long cooling and shaping time of the existing mold after injection molding. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0013] Figure 2 This is a schematic diagram of the internal structure of the utility model;

[0014] Figure 3 This is a schematic diagram of the mold core structure of the utility model;

[0015] Figure 4 This is a schematic diagram of the main structure of the mold of the utility model;

[0016] Figure 5 This is a schematic diagram of the cooling pipe structure of the utility model.

[0017] In the figure, 1. mold body; 2. mold core; 3. injection tube; 4. hydraulic rod; 5. drain port; 6. water inlet; 7. cooling pipe; 8. guide plate. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0019] Example 1

[0020] See also Figure 1-5 The embodiment of the utility model provides a technical solution: a large-size elbow pipe lining mold, including a mold body 1, a mold core 2, a drain port 5 and a guide plate 8. The mold body 1 is provided with two mold bodies, and the mold core 2 is arranged inside the two mold bodies 1. A groove is arranged on the inner side of the mold body 1, and the groove is connected to one end of the bottom of the injection tube 3. The other side of the two mold bodies 1 is welded to the telescopic end of the hydraulic rod 4.

[0021] A water inlet 6 is provided on one side of the top of the mold main body 1, and a drain port 5 is provided on one side of the bottom of the mold main body 1. Cooling water enters into the two mold main bodies 1 through the water inlet 6, thereby cooling the mold main body 1, which is beneficial for the mold main body 1 to be able to cool down quickly. At the same time, a vortex-shaped guide plate 8 is provided inside the mold main body 1, so that the mold main body 1 can transfer the temperature to the guide plate 8, thereby increasing the heat exchange surface of the mold main body 1, improving the cooling effect of the mold main body 1 and thus improving the shaping efficiency of the pipe fittings.

[0022] Example 2

[0023] A cooling tube 7 is inserted into the mold core 2, and two cooling tubes 7 are provided; there are two mold cores 2, the angle between the two mold cores 2 is ninety degrees, and one end of the two mold cores 2 is tightly fitted with each other, there is a gap between the outer wall of the mold core 2 and the inner wall of the mold body 1, and there is a gap between the guide plate 8 and the inner wall of one side of the mold body 1. The two mold cores 2 provide external driving equipment to be pushed into the inside of the mold core 2 body. After the injection molding is completed, the cooling water can enter the cooling tube 7 through one end of the cooling tube 7 to circulate, and then the cooling water can be used to perform heat exchange cooling on the mold core 2, and the mold core 2 is cooled, so that the mold core 2 can cool and shape the inner wall of the pipe fitting, thereby improving the shaping efficiency of the pipe fitting, which is conducive to the synchronous and uniform cooling and shaping of the inner and outer walls of the pipe fitting.

[0024] Example 3

[0025] The interior of the mold body 1 is a hollow structure, and both mold bodies 1 are provided with guide vanes 8, which are vortex-shaped. The cooling pipe 7 inside the mold core 2 is a hollow structure, and the two ends of the cooling pipe 7 are connected to each other. The middle part of the cooling pipe 7 is a spiral structure, so that the mold body 1 can transfer the temperature to the guide vane 8, thereby increasing the heat exchange surface of the mold body 1. The spiral cooling pipe 7 can extend the travel of the cooling water inside the mold core 2, which is beneficial for the cooling water to fully exchange heat and cool the mold core 2.

[0026] Working principle: When the mold is in use, two hydraulic rods 4 are used to push the mold body 1 to close the mold, and then injection molding can be performed through the injection tube 3, so that the material can be injected into the cavity between the mold body 1 and the mold core 2, and cooling water enters the two mold bodies 1 through the water inlet 6, thereby cooling the mold body 1, which is conducive to quickly cooling the mold body 1.

[0027] At the same time, a vortex-shaped guide plate 8 is arranged inside the mold body 1, so that the mold body 1 can transfer the temperature to the guide plate 8, thereby increasing the heat exchange surface of the mold body 1, improving the cooling effect of the mold body 1 and thus improving the shaping efficiency of the pipe fittings. The two cores 2 provide external driving equipment to be pushed into the main body of the core 2. After the injection molding is completed, the cooling water can enter the cooling pipe 7 through one end of the cooling pipe 7 to circulate inside the cooling pipe 7, and then the cooling water can be used to perform heat exchange cooling on the core 2, so that the core 2 can cool the inner wall of the pipe fitting and shape it, thereby improving the shaping efficiency of the pipe fitting, which is conducive to the synchronous and uniform cooling and shaping of the inner and outer walls of the pipe fitting.

[0028] The components of the utility model, 1. mold body; 2. mold core; 3. injection tube; 4. hydraulic rod; 5. drain port; 6. water inlet; 7. cooling pipe; 8. guide plate, are all common standard parts or parts known to those skilled in the art, and their structures and principles can be known to those skilled in the art through technical manuals or conventional experimental methods.

Claims

1. A large-size elbow pipe lining mold, characterized by: The invention comprises a mold body (1), a mold core (2), a drain port (5) and a guide plate (8), wherein two mold bodies (1) are provided, and mold cores (2) are provided inside the two mold bodies (1), a groove is provided inside the mold body (1), and the groove is connected to one end of the bottom of an injection tube (3), and the other side of the two mold bodies (1) is welded to the telescopic end of a hydraulic rod (4), a water inlet (6) is provided on one side of the top of the mold body (1), and a drain port (5) is provided on one side of the bottom of the mold body (1), and a cooling pipe (7) is inserted inside the mold core (2), and two cooling pipes (7) are provided.

2. According to claim 1, a large-size elbow pipe lining mold is characterized by: Two mold cores (2) are provided, the angle between the two mold cores (2) is ninety degrees, and one end of the two mold cores (2) is tightly fitted to each other, and there is a gap between the outer wall of the mold core (2) and the inner wall of the mold body (1).

3. According to claim 1, a large-size elbow pipe lining plastic mold is characterized by: The interior of the mold body (1) is a hollow structure, and guide plates (8) are provided inside the two mold bodies (1). The guide plates (8) are vortex-shaped, and there is a gap between the guide plates (8) and the inner wall of one side of the mold body (1).

4. According to claim 1, a large-size elbow pipe lining mold is characterized by: The guide plate (8) is made of a copper-aluminum composite material.

5. According to claim 1, a large-size elbow pipe lining plastic mold is characterized by: The cooling pipe (7) inside the mold core (2) is of a hollow structure, and both ends of the cooling pipe (7) are connected to each other, and the middle part of the cooling pipe (7) is of a spiral structure.

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