Sealing die for steel wire mesh framework pipe

Abstract

The utility model provides a sealing die for a steel wire mesh framework pipe, belongs to the technical field of steel wire mesh framework pipe processing, and solves the problem that the processing quality and the sealing effect are difficult to effectively guarantee in the prior art. The steel wire mesh framework pipe sealing mold comprises two half molds, a mold core is arranged between the two half molds, a limiting opening and an annular mold cavity communicated with the limiting opening are formed between the mold core and the two half molds, the limiting opening penetrates through the side walls of the two half molds, and the caliber of the limiting opening is smaller than that of the mold cavity. The sealing mold for the steel wire mesh framework pipe effectively ensures the processing quality and the sealing effect.

Description

Technical Field

[0001] The utility model belongs to the technical field of wire mesh skeleton tube processing and relates to a wire mesh skeleton tube sealing mould. Background Art

[0002] The steel wire is continuously wound and extruded to obtain a wire mesh skeleton tube. During the production process, the tube needs to be cut to a fixed length, and the steel wire is exposed at the end of the tube. In order to prevent the steel wire from corroding and liquid from penetrating and affecting the reliability of the tube, the end of the tube needs to be sealed.

[0003] At present, the common sealing method is to manually weld the sealing ring. First, the end face of the pipe is polished to remove the oxide layer and make the end face flat. At this time, the end face of the pipe and the sealing ring are heated and melted to the appropriate temperature, and the sealing ring is connected to the end face of the pipe. After sufficient cooling, the weld position is polished and trimmed. This sealing method requires multiple polishing of the wire mesh skeleton end face, which produces a large amount of powder to pollute the environment. The sparks generated during the polishing process pose a safety risk. At the same time, multiple links of this method require manual operation, the work efficiency is low, and the quality of the end is difficult to monitor. It may cause shedding or exposed steel corrosion problems, thereby reducing the service life of the pipeline.

[0004] To this end, a Chinese patent application (application number: 202121904146.0) discloses a wire mesh skeleton pipe injection sealing mold and a sealing device having the mold, including a gasket assembly and a mold base with an injection hole, a narrow lower and wide upper annular groove is formed between the gasket assembly and the mold base, and a heating element and a cooling channel are provided inside the mold base. Under the action of external force, the end of the wire mesh skeleton pipe extends into the groove, and the molten PE raw material enters the groove along the injection hole. After the molten PE raw material fills the groove, the heating element stops heating. After standing for a certain period of time, the high-temperature PE raw material fuses with the inner and outer layers of the PE material of the wire mesh skeleton pipe. At this time, the cooling fluid enters the cooling channel to cool and shape the mold base and the molten PE raw material.

[0005] However, the above method has the following defects: 1. The annular groove is narrow at the bottom and wide at the top, and the wire mesh skeleton tube is difficult to be placed exactly, and is prone to deflection or not completely reaching the bottom wall of the groove. The injection-molded sealing ring may be offset or skewed relative to the expected position, making it difficult to ensure the processing quality and sealing effect. 2. The notch of the annular groove is flush with the surface of the mold base, and slight shaking occurs during processing. The PE raw material injected into the groove may overflow from the notch and spread to the surface of the mold base. The injection-molded sealing ring may be deformed, making it difficult to ensure the processing quality and sealing effect. Utility Model Content

[0006] The purpose of the utility model is to solve the above problems in the prior art and propose a wire mesh skeleton pipe sealing mold. The technical problem to be solved by the utility model is: how to ensure the processing quality and sealing effect.

[0007] The purpose of the utility model can be achieved through the following technical solutions: a wire mesh skeleton tube sealing mold, characterized in that the mold includes two half molds, a mold core is provided between the two half molds, a limit opening and an annular mold cavity connected to the limit opening are formed between the mold core and the two half molds, the limit opening passes through the side walls of the two half molds, and the caliber of the limit opening is smaller than the caliber of the mold cavity.

[0008] When the wire mesh skeleton tube mold is used in actual work, the end of the wire mesh skeleton tube is aligned with the limit port, and under the guidance of the limit port, it enters the annular mold cavity at a proper angle, and then the molten raw material is injected into the mold cavity. The molten raw material fills the mold cavity and wraps the part of the wire mesh skeleton tube located in the mold cavity. After cooling and molding, a sealing ring is formed at this end of the wire mesh skeleton tube. The limit port guides the wire mesh skeleton tube to enter the mold cavity at a proper angle, avoiding the problem that the sealing ring of the injection molding is offset or skewed relative to the expected position due to the deflection of the wire mesh skeleton tube, thereby ensuring the processing quality and sealing effect. The mold cavity is not directly connected to the side wall of the half mold. The setting of the limit port prevents the slight shaking during processing from causing the raw material to overflow from the mold cavity and spread to the surface of the half mold, resulting in the deformation of the sealing ring of the injection molding, thereby ensuring the processing quality and sealing effect. The diameter of the mold cavity is larger than that of the limit port, the diameter of the sealing ring for injection molding is larger than that of the limit port, and the mold adopts two half molds instead of an integrated mold base. The two half molds can be used for injection molding operations when installed, and the processed wire mesh skeleton tube can be easily taken out when the two half molds are disassembled, making demolding more convenient.

[0009] The above-mentioned wire mesh skeleton tube sealing mold has two half molds that are tightly fixed against each other to form a cavity, and the mold core includes a core, and a mold cavity and a limit opening are formed between the side wall of the cavity and the core. When the two half molds are close to each other and tightly fixed, a mold cavity and a limit opening are formed between the side wall of the cavity and the core, and the wire mesh skeleton tube is sleeved on the core, and the injection molding operation can be performed at this time. After the processing is completed, the two half molds are separated from each other and the processed sealing ring is exposed. At this time, the processed wire mesh skeleton tube can be easily taken out, making demoulding more convenient.

[0010] The above-mentioned wire mesh skeleton tube sealing mold has a cooling cavity in the core, and an end cover and a water baffle are provided at one end of the cooling cavity away from the mold cavity, and a water inlet and a water outlet are provided on the end cover, and the water inlet and the water outlet are respectively located on both sides of the water baffle. The cooling liquid is injected into the cooling cavity from the water inlet, bypasses the water baffle and flows out from the water outlet, and the heat is taken away by the circulation flow.

[0011] The above-mentioned wire mesh skeleton tube sealing mold, the core includes a circumferentially protruding annular step portion, and the side wall of the step portion abuts against the side wall of the mold cavity. The wire mesh skeleton tube extends into the mold cavity and the end face abuts against the step portion. The setting of the step portion limits the length of the wire mesh skeleton tube extending into the mold cavity. A space for molten raw materials to be injected is formed between the wire mesh skeleton tube, the step portion and the two half molds. The setting of the step portion makes the end face of the injection-molded sealing ring flat, which is conducive to the subsequent butt welding connection between the wire mesh skeleton tubes.

[0012] The above-mentioned wire mesh skeleton tube sealing mold, the mold core also includes a clamping part, and the two half molds are tightly fixed together by a fixing piece, and the clamping part is clamped and fixed. When the two half molds are clamped and fixed to the clamping part, it is used for injection molding operation, and when the two half molds release the clamping part, the processed wire mesh skeleton tube can be easily taken out, making demoulding more convenient.

[0013] In the above-mentioned steel wire mesh skeleton tube sealing mold, the half molds are each provided with a reciprocating tortuous cooling channel. The cooling channel is arranged in a reciprocating tortuous shape in the half molds, which effectively increases the surface area of ​​the cooling channel and thus improves the cooling efficiency.

[0014] In the above-mentioned wire mesh skeleton pipe sealing mold, the side wall of the limit port and the side wall of the mold cavity have a smooth transition. The arc transition between the injection-molded sealing ring and the wire mesh skeleton pipe body effectively reduces stress concentration.

[0015] Compared with the existing technology, this wire mesh skeleton tube sealing mold has the following advantages:

[0016] 1. In the wire mesh skeleton tube sealing mold, the limit port guides the wire mesh skeleton tube to enter the mold cavity at an appropriate angle, avoiding the problem that the wire mesh skeleton tube deflects and causes the injection molded sealing ring to be offset or skewed relative to the expected position, thereby ensuring the processing quality and sealing effect.

[0017] 2. In the wire mesh skeleton tube sealing mold, the mold cavity is not directly connected to the side wall of the half mold. The setting of the limit port prevents the slight shaking during processing from causing the raw materials to overflow from the mold cavity and spread to the surface of the half mold, resulting in deformation of the injection molded sealing ring, thereby ensuring the processing quality and sealing effect.

[0018] 3. In the wire mesh skeleton tube sealing mold, the diameter of the mold cavity is larger than the diameter of the limit port, the diameter of the injection-molded sealing ring is larger than the diameter of the limit port, and the mold adopts two half molds instead of an integrated mold base. The two half molds can be used for injection molding operations when installed, and the processed wire mesh skeleton tube can be easily taken out when the two half molds are disassembled, making demolding more convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is the overall assembly diagram of the steel wire mesh skeleton tube sealing mold.

[0020] Figure 2 It is a side view of the steel wire mesh skeleton tube sealing mold.

[0021] Figure 3 yes Figure 2 Cross-sectional view along AA direction.

[0022] Figure 4 It is a top view of the steel wire mesh skeleton tube sealing mold.

[0023] Figure 5 yes Figure 4 Cross-sectional view along direction BB.

[0024] Figure 6 It is a bottom view of the steel wire mesh skeleton tube sealing mold.

[0025] Figure 7 yes Figure 6 Cross-sectional view along CC direction.

[0026] Figure 8 yes Figure 6 Cross-sectional view along DD direction.

[0027] Fig. 9 It is a schematic diagram of the exploded structure of the steel wire mesh skeleton tube sealing mold.

[0028] In the figure, 1, half mold; 1a, cavity; 2, mold core 2; 2a, core; 2a1, cooling cavity; 2a2, step portion; 2b, clamping portion; 3, limit port; 4, mold cavity; 5, end cover; 5a, water inlet; 5b, water outlet; 6, baffle; 7, cooling channel. DETAILED DESCRIPTION

[0029] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0030] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

[0031] like Figure 1-Figure 9 As shown, the wire mesh skeleton tube sealing mold comprises two half molds 1, and a reciprocating tortuous cooling channel is arranged in each half mold 1. The cooling channel is arranged in the half mold 1 in a reciprocating tortuous shape, which effectively increases the surface area of ​​the cooling channel and thus improves the cooling efficiency.

[0032] A mold core 2 is provided between the two half molds 1, and the mold core 2 includes a core 2a and a clamping part. The two half molds 1 are tightly fixed together by a fixing member to form a cavity 1a, and the tightly fitting part outside the cavity 1a is clamped and fixed to the clamping part. A limiting opening 3 and an annular mold cavity 4 connected to the limiting opening 3 are formed between the side wall of the cavity 1a and the core 2a, and the limiting opening 3 penetrates the side walls of the two half molds 1, and the caliber of the limiting opening 3 is smaller than the caliber of the mold cavity 4. The two half molds 1 are close to each other and tightly fixed, and the clamping part 2b is clamped and fixed. At this time, the mold cavity 4 and the limiting opening 3 are formed between the side wall of the cavity 1a and the core 2a, and the wire mesh skeleton tube is sleeved on the core 2a, and the injection molding operation can be performed. After the processing is completed, the two half molds 1 release the clamping part 2b, move away from each other and expose the processed sealing ring. At this time, the processed wire mesh skeleton tube can be easily taken out, making demoulding more convenient.

[0033] The side wall of the limit opening 3 and the side wall of the mold cavity 4 are smoothly transitioned. The arc transition between the injection-molded sealing ring and the wire mesh skeleton tube body effectively reduces stress concentration.

[0034] A cooling cavity 2a1 is provided in the core 2a, and an end cover 5 and a water baffle 6 are provided at one end of the cooling cavity 2a1 away from the mold cavity 4. A water inlet 5a and a water outlet 5b are provided on the end cover 5, and the water inlet 5a and the water outlet 5b are respectively located on both sides of the water baffle 6. The cooling liquid is injected into the cooling cavity 2a1 from the water inlet 5a, bypasses the water baffle 6 and flows out from the water outlet 5b, and the heat is taken away by the circulating flow.

[0035] The core 2a also includes a circumferentially protruding annular step portion 2a2, and the side wall of the step portion 2a2 abuts against the side wall of the mold cavity 4. The steel mesh skeleton tube extends into the mold cavity 4 and the end face abuts against the step portion 2a2. The setting of the step portion 2a2 limits the length of the steel mesh skeleton tube extending into the mold cavity 4. A space for the injection of molten raw materials is formed between the steel mesh skeleton tube, the step portion 2a2 and the two half molds 1. The setting of the step portion 2a2 makes the end face of the injection-molded sealing ring flat, which is conducive to the subsequent butt welding connection between the steel mesh skeleton tubes.

[0036] In actual operation, the two half molds 1 are close to each other and fixed together by the fixing parts. At this time, the clamping part 2b of the mold core 2 is clamped and fixed between the two half molds 1. The end of the wire mesh skeleton tube is aligned with the limit opening 3. Under the guidance of the limit opening 3, it enters the annular mold cavity 4 at a proper angle, and then the molten raw material is injected into the mold cavity 4. The molten raw material fills the mold cavity 4 and wraps the part of the wire mesh skeleton tube located in the mold cavity 4. After cooling and forming, the end of the wire mesh skeleton tube forms a sealing ring. Then, the two half molds 1 release the clamping part 2b, move away from each other and expose the processed sealing ring. At this time, the processed wire mesh skeleton tube can be easily taken out, making demoulding more convenient.

[0037] The limit opening 3 guides the steel mesh skeleton tube to enter the mold cavity 4 at an appropriate angle, avoiding the problem that the steel mesh skeleton tube is deflected and causes the sealing ring of the injection molding to be offset or skewed relative to the expected position, thereby ensuring the processing quality and sealing effect. The mold cavity 4 is not directly connected to the side wall of the half mold 1. The setting of the limit opening 3 prevents the slight shaking during processing from causing the raw material to overflow from the mold cavity 4 and spread to the surface of the half mold 1, causing the sealing ring of the injection molding to deform, thereby ensuring the processing quality and sealing effect. The caliber of the mold cavity 4 is larger than the caliber of the limit opening 3, and the caliber of the sealing ring of the injection molding is larger than the caliber of the limit opening 3. The mold uses two half molds 1 instead of an integrated mold base. The two half molds 1 can be used for injection molding operations when they are installed. The wire mesh skeleton tube that has been processed can be easily removed when the two half molds 1 are disassembled, making demolding more convenient.

[0038] Although the terminology such as half mold 1, cavity 1a, mold core 2, core 2a, cooling cavity 2a1, step portion 2a2, clamping portion 2b, stopper 3, mold cavity 4, end cover 5, water inlet 5a, water outlet 5b, baffle 6, cooling channel 7 is used more frequently in this article, the possibility of using other terms is not excluded. The use of these terms is only for more convenient description and explanation of the essence of the utility model; interpreting them as any additional restrictions is contrary to the spirit of the utility model.

Claims

1. A wire mesh skeleton tube sealing mold, characterized in that: The mold comprises two half molds (1), a mold core (2) is arranged between the two half molds (1), a limiting opening (3) and an annular mold cavity (4) connected to the limiting opening (3) are formed between the mold core (2) and the two half molds (1), the limiting opening (3) passes through the side walls of the two half molds (1), and the diameter of the limiting opening (3) is smaller than the diameter of the mold cavity (4).

2. A wire mesh skeleton tube sealing mold according to claim 1, characterized in that: The two half molds (1) are fixed against each other to form a cavity (1a); the mold core (2) comprises a core (2a); a mold cavity (4) and a limiting opening (3) are formed between the side wall of the cavity (1a) and the core (2a).

3. A wire mesh skeleton tube sealing mold according to claim 2, characterized in that: A cooling cavity (2a1) is provided in the core (2a), and an end cover (5) and a water baffle (6) are provided at one end of the cooling cavity (2a1) away from the mold cavity (4). A water inlet (5a) and a water outlet (5b) are provided on the end cover (5), and the water inlet (5a) and the water outlet (5b) are respectively located on two sides of the water baffle (6).

4. A wire mesh skeleton tube sealing mold according to claim 2 or 3, characterized in that: The core (2a) comprises a circumferentially protruding annular step portion (2a2), and a side wall of the step portion (2a2) abuts against a side wall of the mold cavity (4).

5. A wire mesh skeleton tube sealing mold according to claim 4, characterized in that: The mold core (2) also includes a clamping portion (2b), and the two half molds (1) are tightly fixed together by a fixing piece, and the clamping portion (2b) is clamped and fixed.

6. A wire mesh skeleton tube sealing mold according to claim 5, characterized in that: The half molds (1) are each provided with a cooling channel (7) which torsions back and forth.

7. A wire mesh skeleton tube sealing mold according to claim 6, characterized in that: The side wall of the limiting opening (3) and the side wall of the mold cavity (4) are in smooth transition.

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