Rapid cooling embedded wire mold for the resistance wire stabilization embedding device of reinforced polyethylene electrofusion pipe fittings

Abstract

This invention discloses a rapid-cooling embedded wire mold for a device to stabilize the embedding of resistance wire in reinforced polyethylene electrofusion pipe fittings. The rapid-cooling embedded wire mold uses a cooling pipe and a cooling medium flow channel to introduce cooling medium into a hollow embedded wire mold, rapidly cooling the hot-melted polyethylene raw material and the inner wall of the reinforced polyethylene pipe section. The cooling medium is then rapidly returned via a return pipe, creating a cyclic cooling process. The mold is characterized by comprising an embedded wire mold, a return connection port, a sealing isolation plate, a cooling vertical groove, a return pipe, a return hole, and a cooling medium flow channel. The embedded wire mold has a hollow structure. The return pipe is placed inside the embedded wire mold and located in the middle of the mold. One end of the return pipe has a return hole on its side wall, and the other end of the embedded wire mold has a return connection port connected to the return pipe. The sealing isolation plate is placed inside the embedded wire mold and has a cooling medium flow channel. The inner wall of the side of the embedded wire mold has a cooling vertical groove.

Description

Technical Field

[0001] This invention relates to a rapid cooling embedding die for a device for stabilizing the embedding of resistance wire in a reinforced polyethylene electrofusion pipe fitting. It belongs to the field of water supply and drainage technology, and specifically relates to a rapid cooling embedding die capable of rapidly cooling the hot-melted polyethylene raw material and the inner wall of the reinforced polyethylene pipe section by introducing a cooling medium into the hollow embedding die, and where the cooling medium can quickly return and circulate for cooling. Background Technology

[0002] In practical applications, multiple wire-wound pipes need to be laid end-to-end in a trench to meet drainage distance requirements. However, because the wire-wound pipes have steel wires wrapped inside their walls, they cannot be directly heat-fused and welded. Therefore, methods such as polyethylene flared heat fusion connection, polyethylene electrofusion fitting connection, or rubber sealing ring connection are required for end-to-end connection. However, with these connection methods, the joint is made of pure polyethylene material, which has low pressure resistance. The pressure resistance of the joint after connection is lower than that of the wire-wound pipe itself. If the water supply is based on the pressure resistance of the wire-wound pipe itself, it is easy to cause the joint to be subjected to excessive pressure and break. If the water supply is based on the pressure resistance of the joint, it will result in a waste of the drainage capacity of a large section of wire-wound pipe.

[0003] To address the aforementioned issues, the applicant filed a separate Chinese invention patent application entitled "A Reinforced Polyethylene Electrofusion Fitting and Processing Method." This method involves creating spiral grooves on the inner wall of a reinforced polyethylene pipe section using a cutter, embedding resistance wires within the grooves, and then pressing the resistance wires to form a reinforced polyethylene electrofusion fitting. Connecting multiple wire-wound pipes with this fitting effectively improves the pressure-bearing capacity at the connection point, ensuring consistency with the wire-wound pipes. However, this groove-cutting and wire-embedding processing method is prone to the resistance wires detaching or shifting from the grooves during the embedding process, resulting in wire slippage and affecting the quality of the electrofusion fitting.

[0004] To address the aforementioned issues, the applicant filed a separate Chinese invention patent application entitled "A Device for Stable Embedding of Resistance Wire in Reinforced Polyethylene Electrofusion Pipe Fittings." This device heats the resistance wire by applying electricity to melt the inner wall of the reinforced polyethylene pipe section. Then, hot-melt polyethylene material is added between the embedding mold and the reinforced polyethylene pipe section, ensuring thorough adhesion between the resistance wire and the inner wall of the pipe section. After cooling, the resistance wire is more stably embedded in the pipe section, preventing wire slippage. During the replenishment of hot-melt polyethylene material, a rotary motor drives the embedding mold and resistance wire to rotate slowly, ensuring even distribution of the added material between the mold and the pipe section, guaranteeing that the inner diameter of the pipe section after embedding the resistance wire meets requirements. However, after replenishing the hot-melt polyethylene material, this device requires a considerable waiting time for the material and the inner wall of the reinforced polyethylene pipe section to cool completely, resulting in a slow embedding speed. Summary of the Invention

[0005] To improve the above situation, the present invention provides a rapid cooling embedded wire mold for a device for stabilizing the embedding of resistance wire in reinforced polyethylene electrofusion pipe fittings. This rapid cooling embedded wire mold provides a method for rapidly cooling the heated polyethylene raw material and the inner wall of the reinforced polyethylene pipe section by introducing cooling medium into the hollow embedded wire mold through a cooling pipe and a cooling medium flow channel, and for rapidly circulating and cooling the cooling medium through a return pipe.

[0006] The rapid cooling embedding mold of the device for stabilizing the embedding of resistance wire in reinforced polyethylene electrofusion pipe fittings according to the present invention is implemented as follows: The rapid cooling embedding mold of the device for stabilizing the embedding of resistance wire in reinforced polyethylene electrofusion pipe fittings according to the present invention consists of an embedding mold, a return connection port, a sealing isolation plate, a cooling vertical groove, a return pipe, a return hole, a cooling pipe, a cooling connection port, and a cooling medium flow groove.

[0007] The embedded wire mold has a hollow structure.

[0008] The return pipe is placed inside the wire embedding mold and located in the middle of the mold.

[0009] Preferably, one end of the return pipe is sealed to the inner wall of one end of the embedded wire mold, and the other end of the return pipe is sealed to the inner wall of the other end of the embedded wire mold.

[0010] A reflux hole is opened on the side wall of one end of the reflux pipe.

[0011] Preferably, there are multiple reflux holes, and the multiple reflux holes are arranged at equal intervals along the circumference of the reflux pipe.

[0012] The other end of the embedded wire mold has a return connection port that connects to the return pipe.

[0013] A sealing isolation plate is placed inside the wire embedding mold, and the edge of the sealing isolation plate is sealed to the wire embedding mold. A through hole corresponding to the return pipe is opened in the middle of the sealing isolation plate.

[0014] Cooling medium flow channels are provided on the sealed isolation plate.

[0015] Preferably, there are multiple cooling medium flow channels, and the multiple cooling medium flow channels are arranged at equal intervals along the circumference of the sealing isolation plate.

[0016] The inner wall of the embedded wire mold has cooling vertical grooves.

[0017] Preferably, there are multiple cooling vertical grooves, which are arranged at equal intervals along the circumference of the wire embedding mold.

[0018] Preferably, the cooling vertical groove is located between the sealing isolation plate and the inner wall of one end of the embedded wire mold.

[0019] The other end of the wire embedding mold has a cooling connection port. One end of the cooling pipe is placed in the cooling connection port, and the other end of the cooling pipe extends into the wire embedding mold.

[0020] Furthermore, a heat insulation layer is placed on the outer wall of the return pipe, the heat insulation layer is wrapped around the surface of the return pipe, and the surface of the heat insulation layer is wrapped with a waterproof cloth;

[0021] Furthermore, the cooling medium flow channel is replaced with an arc-shaped channel, and the sealing isolation plate has an arc-shaped channel. There are multiple sets of arc-shaped channels, and the multiple sets of arc-shaped channels are arranged radially along the sealing isolation plate. Adjacent sets of arc-shaped channels are arranged alternately. There are multiple arc-shaped channels in one set, and the multiple arc-shaped channels in the same set are arranged equidistantly along the circumference of the sealing isolation plate. The width of the arc-shaped channel near the edge of the sealing isolation plate is greater than the width of the arc-shaped channel near the center of the sealing isolation plate.

[0022] This invention also relates to a device for stabilizing and embedding resistance wire in reinforced polyethylene electrofusion pipe fittings. The device comprises an embedding wire support mechanism, an injection molding mechanism, and a rotating embedding wire mechanism.

[0023] The wire embedding support mechanism consists of a wire embedding worktable and an isolation frame.

[0024] The isolation frame is placed at the edge of the wire embedding workbench.

[0025] Preferably, the wire embedding worktable is a hollow rectangular structure.

[0026] Preferably, the isolation frame consists of horizontal bars and vertical bars, the horizontal bars being bent multiple times to form the isolation bars, and the vertical bars connecting the horizontal bars and the wire embedding worktable.

[0027] The injection molding mechanism consists of a hot-melt polyethylene delivery pipe, a support plate, a delivery pipe support rod, and a delivery pipe limiting clip.

[0028] The support plate is placed on the isolation frame, and one end of the conveying pipe support rod is placed on the support plate.

[0029] Preferably, the conveying pipe support rod extends vertically for a certain distance from one end to the other, then extends horizontally, and then extends vertically again.

[0030] The conveying pipe limiter is placed on the conveying pipe support rod.

[0031] Preferably, there are multiple conveying pipe limiting clips, which are arranged at equal intervals on the conveying pipe support rod.

[0032] The hot-melt polyethylene conveying pipe is detachably placed on the conveying pipe support rod via a conveying pipe limiting clip.

[0033] The rotating wire embedding mechanism consists of a wire embedding mold, a reinforced polyethylene pipe section support ring, a reinforced polyethylene pipe section limiting plate, limiting bolts, a resistance wire, a rotary motor, a motor box, a mold support plate, and a rotation limiting column.

[0034] The motor housing is placed inside the wire embedding worktable, and the rotary motor is placed inside the motor housing, with the motor shaft of the rotary motor extending out of the wire embedding worktable.

[0035] Preferably, a sealed bearing is provided between the motor shaft of the rotary motor and the wall of the wire embedding worktable.

[0036] The mold support plate is placed on the motor shaft of the rotary motor, and there is a distance between it and the wire embedding worktable.

[0037] Multiple rotating limiting posts are placed between the mold support plate and the wire embedding worktable. One end of each rotating limiting post is connected to the wire embedding worktable, and the other end of each rotating limiting post is equipped with a rotating ball bearing. The rotating ball bearing is in contact with the mold support plate.

[0038] Preferably, the plurality of rotation limiting posts are arranged at equal intervals along the circumference of the mold support plate and are located at the edge of the mold support plate.

[0039] The embedded wire mold is detachably placed on the mold support plate.

[0040] Preferably, the mold support plate has multiple engaging slots, and one end of the embedded wire mold is provided with an engaging post corresponding to the multiple engaging slots. The embedded wire mold is detachably placed on the mold support plate through the engaging post and engaging slots.

[0041] Preferably, the other end of the embedded wire mold has an arc-shaped structure.

[0042] The resistance wire is wound onto the embedded wire mold.

[0043] Preferably, the resistance wire is placed in two sections in the embedded wire mold, the two sections are electrically connected, and the two sections are respectively located near both ends of the embedded wire mold.

[0044] The reinforced polyethylene pipe section support ring is placed on the wire embedding worktable, and the mold support plate is located inside the reinforced polyethylene pipe section support ring.

[0045] Preferably, a sealed bearing is placed between the inner ring wall of the reinforced polyethylene pipe section support ring and the mold support plate.

[0046] Preferably, the height of the reinforced polyethylene pipe section support ring is higher than the height of the mold support plate.

[0047] The reinforcing polyethylene pipe section limiting plate is placed on the reinforcing polyethylene pipe section support ring.

[0048] Preferably, there are multiple reinforced polyethylene pipe segment limiting plates, and the multiple reinforced polyethylene pipe segment limiting plates are arranged at equal intervals along the circumference of the reinforced polyethylene pipe segment support ring.

[0049] The reinforced polyethylene pipe section limiting plate has threaded holes, and the limiting bolts are threadedly connected to the reinforced polyethylene pipe section limiting plate through the threaded holes.

[0050] Preferably, a rubber pad is provided at the end of the limiting bolt;

[0051] Furthermore, the reinforced polyethylene pipe section support ring has resistance wire routing grooves, and there are multiple resistance wire routing grooves. The multiple resistance wire routing grooves are arranged at equal intervals along the circumference of the reinforced polyethylene pipe section support ring. One end of the resistance wire routing groove is flush with the inner ring surface of the reinforced polyethylene pipe section support ring, and the other end of the resistance wire routing groove is flush with the outer ring surface of the reinforced polyethylene pipe section support ring.

[0052] Furthermore, the reinforced polyethylene pipe section support ring has anti-slip patterns, which are cross-shaped diagonal patterns, located between the inner ring of the reinforced polyethylene pipe section support ring and the reinforced polyethylene pipe section limiting plate. Beneficial effects

[0053] 1. By introducing a cooling medium into the hollow embedded wire mold to rapidly cool the hot-melted polyethylene raw material and the inner wall of the reinforced polyethylene pipe section, the cooling time can be effectively shortened and the embedded wire speed can be increased.

[0054] Second, the cooling medium can quickly flow back into the refrigeration unit for recooling, circulating and reusing the cooling medium, thus saving resources.

[0055] Third, it has a simple structure and is easy to use.

[0056] Fourth, it is low-cost and easy to promote. Attached Figure Description

[0057] Figure 1 This is a three-dimensional structural diagram of a device for stabilizing the embedding of resistance wire in a reinforced polyethylene electrofusion pipe fitting according to the present invention.

[0058] Figure 2 This is a schematic diagram of the structure of a device for stabilizing the embedding of resistance wire in a reinforced polyethylene electrofusion pipe fitting according to the present invention;

[0059] Figure 3 This is a schematic diagram of an embodiment 2 of the device for stabilizing the embedding of resistance wire in a reinforced polyethylene electrofusion pipe fitting according to the present invention;

[0060] Figure 4 This is a schematic diagram of the structure of Embodiment 3 of the device for stabilizing the embedding of resistance wire in a reinforced polyethylene electrofusion pipe fitting according to the present invention;

[0061] Figure 5 This is a schematic diagram of the structure of a rapid cooling embedding die for a device for stabilizing the embedding of resistance wire in a reinforced polyethylene electrofusion pipe fitting according to the present invention.

[0062] Figure 6 This is a three-dimensional structural diagram of a rapid cooling embedding die for a device for stabilizing the embedding of resistance wire in a reinforced polyethylene electrofusion pipe fitting, according to the present invention.

[0063] Figure 7 This is a schematic diagram of the structure of the rapid cooling wire embedding mold of the resistance wire stabilization embedding device for reinforced polyethylene electrofusion pipe fittings of the present invention, which only shows the structure of the sealing isolation plate.

[0064] Figure 8 This is a schematic diagram of the structure of a rapid cooling embedding die for a device for stabilizing the embedding of resistance wire in a reinforced polyethylene electrofusion pipe fitting according to the present invention, in Embodiment 2.

[0065] Figure 9 This is a schematic diagram of the structure of a rapid cooling embedded wire mold for a device for stabilizing the embedding of resistance wire in a reinforced polyethylene electrofusion pipe fitting according to the present invention, in embodiment 3.

[0066] Attached Figure

[0067] The components include: a hot-melt polyethylene conveying pipe (1), a support plate (2), an isolation frame (3), an embedded wire workbench (4), an embedded wire mold (5), a reinforced polyethylene pipe section support ring (6), a reinforced polyethylene pipe section limiting plate (7), a limiting bolt (8), a resistance wire (9), a conveying pipe support rod (10), a conveying pipe limiting clip (11), a rotary motor (12), a motor box (13), a mold support plate (14), a rotating limiting post (15), a resistance wire routing groove (16), anti-slip texture (17), a return connection port (18), a sealing isolation plate (19), a cooling vertical groove (20), a return pipe (21), a return hole (22), a cooling pipe (23), a cooling connection port (24), a cooling medium flow groove (25), a heat insulation layer (26), and an arc groove (27). Detailed Implementation Example 1

[0068] The present invention discloses a rapid cooling embedding die (5) for a device for stabilizing the embedding of resistance wire (9) in a reinforced polyethylene electrofusion fitting. The die consists of an embedding die (5), a return connection port (18), a sealing isolation plate (19), a cooling vertical groove (20), a return pipe (21), a return hole (22), a cooling pipe (23), a cooling connection port (24), and a cooling medium flow groove (25).

[0069] The embedded wire mold (5) has a hollow structure.

[0070] Preferably, the wall thickness of the embedded wire mold (5) is greater than 5 mm, which is used to ensure the support strength of the embedded wire mold (5) and prevent it from deforming due to pressure or thermal stress during the embedded wire process, thus affecting the inner diameter of the reinforced polyethylene electrofusion pipe section after molding.

[0071] The return pipe (21) is placed inside the wire embedding mold (5) and is located in the middle of the wire embedding mold (5).

[0072] Preferably, one end of the return pipe (21) is sealed to the inner wall of one end of the embedded wire mold (5), and the other end of the return pipe (21) is sealed to the inner wall of the other end of the embedded wire mold (5).

[0073] Preferably, the return pipe (21) and the embedded wire mold (5) are integrally formed.

[0074] A return hole (22) is opened on the side wall of one end of the return pipe (21).

[0075] Preferably, there are multiple reflux holes (22), and the multiple reflux holes (22) are arranged at equal intervals along the circumference of the reflux pipe (21).

[0076] The other end of the embedded wire mold (5) has a return connection port (18) that is connected to the return pipe (21).

[0077] A sealing isolation plate (19) is placed inside the wire embedding mold (5). The edge of the sealing isolation plate (19) is sealed to the wire embedding mold (5). A perforation corresponding to the return pipe (21) is opened in the middle of the sealing isolation plate (19).

[0078] A cooling medium flow channel (25) is opened on the sealing isolation plate (19).

[0079] Preferably, there are multiple cooling medium flow channels (25), and the multiple cooling medium flow channels (25) are arranged at equal intervals along the circumference of the sealing isolation plate (19).

[0080] The inner side wall of the embedded wire mold (5) has a cooling vertical groove (20).

[0081] Preferably, there are multiple cooling vertical grooves (20), and the multiple cooling vertical grooves (20) are arranged at equal intervals along the circumference of the wire embedding mold (5).

[0082] Preferably, the cooling vertical groove (20) is located between the sealing isolation plate (19) and the inner wall of one end of the embedded wire mold (5).

[0083] Preferably, the embedded wire mold (5) is made of a thermally conductive material.

[0084] The other end of the embedded wire mold (5) has a cooling connection port (24), one end of the cooling pipe (23) is placed in the cooling connection port (24), and the other end of the cooling pipe (23) extends into the embedded wire mold (5);

[0085] In use, after replenishing the hot-melt polyethylene material between the embedded wire mold (5) and the reinforced polyethylene pipe section, the reinforced polyethylene pipe section and the embedded wire mold (5) are removed together and placed in the cooling zone. The cooling pipe (23) is connected to the cooling medium outlet of the refrigeration unit, and the return connection port (18) is connected to the cooling medium inlet of the refrigeration unit. The cooling medium flows out from the cooling pipe (23) and passes through the cooling medium flow groove (25) into the space below the sealing isolation plate (19) of the embedded wire mold (5) to cool the side wall of the embedded wire mold (5). Then the hot-melt polyethylene raw material and the inner wall of the reinforced polyethylene pipe section are cooled, so that the hot-melt polyethylene is cooled quickly. After heat exchange, the cooling medium enters the return pipe (21) through the return hole (22) and then enters the refrigerator through the return connection port (18) for cooling. The cooled medium then cools the embedded wire mold (5) through the cooling pipe (23). The cooling is cyclical and there is no need to replenish the cooling medium. After the cooling is completed, the embedded wire mold (5) is removed and the resistance wire (9) is stably embedded in the reinforced polyethylene pipe section. Example 2

[0086] The difference between this embodiment and embodiment 1 is that: a heat insulation layer (26) is placed on the outer wall of the return pipe (21), the heat insulation layer (26) is wrapped around the surface of the return pipe (21), and the surface of the heat insulation layer (26) is wrapped with a waterproof cloth; when in use, the heat insulation layer (26) can isolate the cooling medium that has been returned through heat exchange and the fresh cooling medium, ensuring that the fresh cooling medium maintains a low temperature to cool the hot-melt polyethylene, while the waterproof cloth can prevent condensation from reducing the heat insulation effect of the heat insulation layer (26); Example 3

[0087] The difference between this embodiment and embodiment 1 is that the cooling medium flow channel (25) is replaced by an arc-shaped channel (27), and the sealing isolation plate (19) has an arc-shaped channel (27). There are multiple sets of arc-shaped channels (27), which are arranged radially along the sealing isolation plate (19). Adjacent sets of arc-shaped channels (27) are staggered, and there are multiple arc-shaped channels (27) in one set. Multiple arc-shaped channels (27) in the same set are arranged equidistantly along the circumference of the sealing isolation plate (19). The width of the arc groove (27) on the edge of the sealing isolation plate (19) is greater than the width of the arc groove (27) near the center of the sealing isolation plate (19). When in use, it can accelerate the flow of the cooling medium, so that the fresh cooling medium can enter the wire embedding mold (5) from the edge of the sealing isolation plate (19) at a faster speed, reducing the contact with the return pipe (21). At the same time, the staggered arc grooves (27) can optimize the distribution of the cooling medium, ensuring that the cooling medium flows evenly through the inner wall of the wire embedding mold (5) and improving the cooling uniformity.

[0088] The design of the sealing isolation plate (19) and the embedded wire mold (5) to support the return pipe (21) can prevent the return pipe (21) from vibrating or even shaking during the flow of the cooling medium, thus affecting the stability of the return pipe (21) and improving the overall reliability of the cooling mold.

[0089] The cooling medium flow channel (25) is designed to guide the cooling medium in conjunction with the cooling vertical channel (20), which can evenly distribute the cooling medium to each area of ​​the embedded wire mold (5), prevent the cooling medium from accumulating in some areas, ensure that each area of ​​the embedded wire mold (5) can be fully cooled, and improve the cooling uniformity.

[0090] The design of having multiple return holes (22) arranged equidistantly along the circumference of the return pipe (21) allows the cooling medium that has undergone heat exchange to quickly enter the return pipe (21) and flow back into the refrigerator for recooling, thus preventing it from accumulating in the wire embedding mold (5) and coming into contact with the fresh cooling medium, which would transfer heat to the fresh cooling medium and reduce the cooling effect.

[0091] The cooling medium flow channel (25) has multiple channels. The design of the multiple cooling medium flow channels (25) being arranged at equal intervals along the circumference of the sealing isolation plate (19) enables the cooling medium to flow more evenly to the inner wall of the wire embedding mold (5), ensuring that each area of ​​the inner wall of the wire embedding mold (5) can be fully cooled, thus improving the cooling uniformity.

[0092] The cooling vertical grooves (20) are multiple, and the design of the multiple cooling vertical grooves (20) being arranged at equal intervals along the circumference of the wire embedding mold (5) can ensure the supporting strength of the wire embedding mold (5) while increasing the contact area with the cooling medium and improving the cooling effect.

[0093] The goal is to achieve the purpose of rapidly cooling the inner wall of the hot-melted polyethylene raw material and the reinforced polyethylene pipe section by introducing cooling medium into the hollow embedded wire mold (5) through the cooling pipe (23) and the cooling medium flow channel (25), and to achieve rapid cooling of the cooling medium through the return pipe (21).

[0094] The present invention discloses a device for stabilizing the embedding of resistance wire (9) in reinforced polyethylene electrofusion pipe fittings, which consists of a wire embedding support mechanism, an injection molding mechanism, and a rotating wire embedding mechanism.

[0095] The wire embedding support mechanism consists of a wire embedding worktable (4) and an isolation frame (3).

[0096] The isolation frame (3) is placed at the edge of the wire embedding workbench (4).

[0097] Preferably, the wire embedding worktable (4) is a hollow rectangular structure.

[0098] Preferably, the isolation frame (3) is divided into horizontal bars and vertical bars. The horizontal bars are bent multiple times to form isolation bars, and the vertical bars connect the horizontal bars and the wire embedding worktable (4).

[0099] Preferably, the bottom of the wire embedding worktable (4) is provided with multiple support feet to provide support for the worktable and ensure that the worktable remains stable during the wire embedding process;

[0100] The injection molding mechanism consists of a hot-melt polyethylene delivery pipe (1), a support plate (2), a delivery pipe support rod (10), and a delivery pipe limiting clip (11).

[0101] The support plate (2) is placed on the isolation frame (3), and one end of the conveying pipe support rod (10) is placed on the support plate (2).

[0102] Preferably, the conveying pipe support rod (10) extends vertically for a certain distance from one end to the other, then extends horizontally, and then extends vertically again.

[0103] The conveying pipe limiter (11) is placed on the conveying pipe support rod (10).

[0104] Preferably, there are multiple conveying pipe limiting clips (11), and the multiple conveying pipe limiting clips (11) are arranged at equal intervals on the conveying pipe support rod (10).

[0105] The hot-melt polyethylene conveying pipe (1) is detachably placed on the conveying pipe support rod (10) via the conveying pipe limiting clip (11).

[0106] The rotating wire embedding mechanism consists of a wire embedding mold (5), a reinforced polyethylene pipe section support ring (6), a reinforced polyethylene pipe section limiting plate (7), a limiting bolt (8), a resistance wire (9), a rotary motor (12), a motor box (13), a mold support plate (14), and a rotating limiting column (15).

[0107] The motor housing (13) is placed inside the wire embedding worktable (4), and the rotary motor (12) is placed inside the motor housing (13). The motor shaft of the rotary motor (12) passes through the wire embedding worktable (4).

[0108] Preferably, a sealed bearing is provided between the motor shaft of the rotary motor (12) and the wall of the wire embedding worktable (4).

[0109] The mold support plate (14) is placed on the motor shaft of the rotary motor (12), and there is a distance between it and the wire embedding worktable (4).

[0110] Multiple rotating limiting posts (15) are placed between the mold support plate (14) and the wire embedding worktable (4). One end of each rotating limiting post (15) is connected to the wire embedding worktable (4), and the other end of each rotating limiting post (15) is provided with a rotating ball. The rotating ball is in contact with the mold support plate (14).

[0111] Preferably, the plurality of rotation limiting posts (15) are arranged at equal intervals along the circumference of the mold support plate (14) and are located at the edge of the mold support plate (14).

[0112] The embedded wire mold (5) is detachably placed on the mold support plate (14).

[0113] Preferably, the mold support plate (14) has multiple engaging slots, and one end of the embedded wire mold (5) is provided with engaging posts corresponding to the multiple engaging slots. The embedded wire mold (5) is detachably placed on the mold support plate (14) through the engaging posts cooperating with the engaging slots.

[0114] Preferably, the other end of the embedded wire mold (5) has an arc-shaped structure.

[0115] Preferably, the embedded wire mold (5) is made of metal material with good thermal conductivity.

[0116] The resistance wire (9) is wound around the embedded wire mold (5).

[0117] Preferably, the resistance wire (9) is placed in two sections in the embedded wire mold (5), the two sections of the resistance wire (9) are electrically connected, and the two sections of the resistance wire (9) are respectively close to both ends of the embedded wire mold (5).

[0118] The reinforced polyethylene pipe section support ring (6) is placed on the wire embedding workbench (4), and the mold support plate (14) is located inside the reinforced polyethylene pipe section support ring (6).

[0119] Preferably, a sealed bearing is placed between the inner ring wall of the reinforced polyethylene pipe section support ring (6) and the mold support plate (14).

[0120] Preferably, the height of the reinforced polyethylene pipe section support ring (6) is higher than the height of the mold support plate (14).

[0121] The reinforced polyethylene pipe section limiting plate (7) is placed on the reinforced polyethylene pipe section support ring (6).

[0122] Preferably, there are multiple reinforced polyethylene pipe segment limiting plates (7), and the multiple reinforced polyethylene pipe segment limiting plates (7) are arranged at equal intervals along the circumference of the reinforced polyethylene pipe segment support ring (6).

[0123] The reinforced polyethylene pipe section limiting plate (7) has threaded holes, and the limiting bolt (8) is threadedly connected to the reinforced polyethylene pipe section limiting plate (7) through the threaded holes.

[0124] Preferably, a rubber pad is provided at the end of the limiting bolt (8);

[0125] In use, connect the hot melt polyethylene conveying pipe (1) and the hot melt high-pressure conveyor. Place the reinforced polyethylene pipe section on the reinforced polyethylene pipe section support ring (6). The outer wall of the reinforced polyethylene pipe section is tightly attached to the reinforced polyethylene pipe section limiting plate (7), and the inner wall is tightly attached to the resistance wire (9). Rotate the limiting bolt (8) to support and clamp the reinforced polyethylene pipe section. Turn on the resistance wire (9) to heat it up, which heats the embedded wire mold (5) and the inner wall of the reinforced polyethylene pipe section, causing the inner wall of the reinforced polyethylene pipe section to melt. Turn off the power and start the rotary motor (12). The rotary motor (12) drives the mold support plate (14) to rotate slowly and uniformly through the motor shaft, which in turn drives the embedded wire mold (5) and the resistance wire (9) to rotate slowly. Rotate at a constant speed, and at the same time, hot melt polyethylene raw material is added between the embedded wire mold (5) and the reinforced polyethylene pipe section through the hot melt polyethylene conveying pipe (1). During the rotation, the hot melt polyethylene raw material is evenly distributed between the embedded wire mold (5) and the inner wall of the pipe section, and fully adheres to the molten layer of the inner wall of the pipe section to avoid delamination. At the same time, the resistance wire (9) is also gradually embedded into the molten layer of the inner wall of the reinforced polyethylene pipe section. After the raw material is added, control the rotating motor (12) to stop, loosen the limit bolt (8), and take down the reinforced polyethylene pipe section and the embedded wire mold (5) together and place them in the cooling area to wait for cooling. After the cooling is completed, take down the embedded wire mold (5), and the resistance wire (9) is stably embedded in the reinforced polyethylene pipe section. Example 2

[0126] The difference between this embodiment and embodiment 1 is that: the reinforced polyethylene pipe section support ring (6) has a resistance wire routing groove (16), there are multiple resistance wire routing grooves (16), the multiple resistance wire routing grooves (16) are arranged at equal intervals along the circumference of the reinforced polyethylene pipe section support ring (6), one end of the resistance wire routing groove (16) is flush with the inner ring surface of the reinforced polyethylene pipe section support ring (6), and the other end of the resistance wire routing groove (16) is flush with the outer ring surface of the reinforced polyethylene pipe section support ring (6); in use, the resistance wire routing groove (16) enables the resistance wire (9) to run smoothly and stably on the reinforced polyethylene pipe section support ring (6) for heating, while ensuring that the placement stability of the reinforced polyethylene pipe section is not affected when the resistance wire (9) is running; Example 3

[0127] The difference between this embodiment and embodiment 2 is that: the reinforced polyethylene pipe section support ring (6) has anti-slip texture (17), the anti-slip texture (17) is a cross diagonal texture, and the anti-slip texture (17) is located between the inner ring of the reinforced polyethylene pipe section support ring (6) and the reinforced polyethylene pipe section limiting plate (7); when in use, the anti-slip texture (17) can make the placement of the reinforced polyethylene pipe section more stable, and with the clamping force of the limiting bolt (8), it can effectively prevent the reinforced polyethylene pipe section from sliding with the rotation of the wire embedding mold (5) and affecting the wire embedding quality;

[0128] The limiting bolt (8) is designed to limit the reinforced polyethylene pipe section in conjunction with the reinforcing polyethylene pipe section limiting plate (7). By accurately positioning the reinforced polyethylene pipe section, the uniform distance between each part of the pipe section and the embedded wire mold (5) is achieved, avoiding the thickness difference between different parts of the pipe section when hot melt polyethylene raw material is added, which affects the embedding quality of the resistance wire (9).

[0129] The design of the rubber pad at the end of the limiting bolt (8) can prevent the limiting bolt (8) from causing hard extrusion and scratches on the reinforced polyethylene pipe section during the process of supporting and clamping the reinforced polyethylene pipe section, thus affecting the overall strength of the reinforced polyethylene electrofusion pipe fitting after molding.

[0130] The design of the conveying pipe support rod (10) and the conveying pipe limiter (11) to support the hot melt polyethylene conveying pipe (1) is as follows: the hot melt polyethylene will vibrate during the high pressure conveying process. The limiter fixes the hot melt polyethylene conveying pipe (1) on the conveying pipe support rod (10), which can provide stable support for the conveying pipe and ensure stable and uniform injection of hot melt polyethylene.

[0131] The multiple rotating limit pins (15) are arranged at equal intervals along the circumference of the mold support plate (14) and are located at the edge of the mold support plate (14). This design can provide relatively smooth support to the edge of the mold support plate (14), prevent the edge of the mold support plate (14) from deviating vertically during uniform rotation, ensure the stable rotation of the embedded wire mold (5), and thus ensure the stability of the embedded wire.

[0132] The mold support plate (14) has multiple locking grooves. One end of the wire embedding mold (5) is provided with a locking post corresponding to the multiple locking grooves. The wire embedding mold (5) is designed to be detachably placed on the mold support plate (14) through the locking post and locking groove. The wire embedding mold (5) is detachable and can be removed together with the reinforced polyethylene pipe section after wire embedding, and then removed after cooling. Wire embedding and cooling are carried out at the same time, which is highly efficient.

[0133] The design of the height of the reinforced polyethylene pipe section support ring (6) being higher than the height of the mold support plate (14) can prevent the hot melt polyethylene raw material from flowing down into the space between the mold support plate (14) and the embedded wire mold (5) through the sealed bearing, thus ensuring the stability of the embedded wire.

[0134] The goal is to achieve the following: after heating the resistance wire (9) with electricity to melt the inner wall of the reinforced polyethylene pipe section, hot melt polyethylene raw material is added between the embedded wire mold (5) and the reinforced polyethylene pipe section, so that the resistance wire (9) and the inner wall of the reinforced polyethylene pipe section are fully bonded. After cooling, the resistance wire (9) can be more stably embedded in the pipe section without the phenomenon of wire running away.

[0135] It should be noted that, unless otherwise explicitly specified and limited, the terms "placed," "connected," and "linked" should be interpreted broadly. For example, they can refer to fixed connections such as folded edges, rivets, pins, adhesives, and welds; detachable connections such as threaded connections, snap-fit ​​connections, and hinges; integral connections; electrical connections; direct connections; or indirect connections via an intermediate medium; or internal connections between two components. Those skilled in the art can understand the specific meaning of these terms in this invention based on the specific circumstances.

[0136] It should be further noted that, in order to keep the description simple and clear, the above specific embodiments only describe the differences between them and other embodiments. However, those skilled in the art should know that the above specific embodiments are also independent technical solutions.

Claims

1. A rapid-cooling embedding die for a device for stabilizing the embedding of resistance wire in reinforced polyethylene electrofusion pipe fittings, characterized in that: The application relates to a cooling device for a refrigeration machine, which is composed of a wire-embedded mold, a backflow connecting port, a sealing isolation plate, a cooling vertical groove, a backflow pipe, a backflow hole, a cooling pipe, a cooling connecting port and a cooling medium flow channel.

2. A rapid cooling wire embedding mold for a wire stabilizing embedding device of an electric resistance wire of a reinforced polyethylene electric melt pipe fitting according to claim 1, characterized in that The backflow pipe is provided with a heat insulation layer on the outer wall, the heat insulation layer is wrapped on the surface of the backflow pipe, and the surface of the heat insulation layer is wrapped with waterproof cloth.

3. A rapid cooling wire embedding mold for a wire stabilizing embedding device of an electric resistance wire of a reinforced polyethylene electric melt pipe fitting according to claim 1, characterized in that The cooling medium flow channel is replaced by an arc-shaped groove, the sealing isolation plate is provided with the arc-shaped groove, the arc-shaped groove has multiple groups, the multiple groups of the arc-shaped groove are arranged along the radial direction of the sealing isolation plate, and the adjacent two groups of the arc-shaped groove are staggered, one group of the arc-shaped groove has multiple arc-shaped grooves, the multiple arc-shaped grooves in the same group are equidistantly arranged along the circumferential direction of the sealing isolation plate, and the width of the arc-shaped groove close to the edge of the sealing isolation plate is larger than that of the arc-shaped groove close to the center of the sealing isolation plate.

4. A rapid cooling wire embedding mold for a wire stabilizing embedding device of an electric resistance wire of a reinforced polyethylene electric melt pipe fitting according to claim 1, characterized in that The backflow pipe is sealedly connected with the inner wall of one end of the wire-embedded mold, and the other end of the backflow pipe is sealedly connected with the inner wall of the other end of the wire-embedded mold.

5. A rapid cooling wire embedding mold for a wire stabilizing embedding device of an electric resistance wire of a reinforced polyethylene electric melt pipe fitting according to claim 1, characterized in that The backflow hole has multiple backflow holes, and the multiple backflow holes are equidistantly arranged along the circumferential direction of the backflow pipe, so that the cooling medium after heat exchange can quickly enter the backflow pipe to recool in the refrigeration machine, the cooling effect is improved, and the cooling medium is prevented from being accumulated in the wire-embedded mold and being in contact with fresh cooling medium to transfer heat to the fresh cooling medium.

6. A rapid cooling wire embedding mold for a wire stabilizing embedding device of an electric resistance wire of a reinforced polyethylene electric melt pipe fitting according to claim 1, characterized in that The sealing isolation plate is sealedly connected with the wire-embedded mold, and the sealing isolation plate is provided with a through hole corresponding to the backflow pipe.

7. A rapid cooling wire embedding mold for a wire stabilizing embedding device of an electric resistance wire of a reinforced polyethylene electric melt pipe fitting according to claim 1, characterized in that The cooling medium flow channel has multiple cooling medium flow channels, and the multiple cooling medium flow channels are equidistantly arranged along the circumferential direction of the sealing isolation plate, so that the cooling medium can flow to the inner wall of the wire-embedded mold more uniformly, the cooling uniformity is improved, and each region of the inner wall of the wire-embedded mold can be fully cooled.

8. A rapid cooling wire embedding mold for a wire stabilizing embedding device of an electric resistance wire of a reinforced polyethylene electric melt pipe fitting according to claim 1, characterized in that The cooling vertical groove has multiple cooling vertical grooves, and the multiple cooling vertical grooves are equidistantly arranged along the circumferential direction of the wire-embedded mold, so that the support strength of the wire-embedded mold is ensured, the contact area with the cooling medium is increased, and the cooling effect is improved.

9. A rapid cooling wire embedding mold for a wire stabilizing embedding device of an electric resistance wire of a reinforced polyethylene electric melt pipe fitting according to claim 1, characterized in that The cooling vertical groove is located between the sealing isolation plate and the inner wall of one end of the wire-embedded mold.

10. A rapid cooling wire embedding mold for a wire stabilizing embedding device of an electric resistance wire of a reinforced polyethylene electric melt pipe fitting according to claim 1, characterized in that The reinforced polyethylene electrofusion pipe electric resistance wire stable embedding device is composed of a wire embedding support mechanism, an injection mechanism and a rotating wire embedding mechanism, the wire embedding support mechanism is composed of a wire embedding workbench and an isolation frame, the isolation frame is arranged at the edge of the wire embedding workbench, the wire embedding workbench is a hollow rectangular structure, the isolation frame is divided into a horizontal rod and a vertical rod, the horizontal rod is bent multiple times to form an isolation rod, the vertical rod is connected with the horizontal rod and the wire embedding workbench, the injection mechanism is composed of a hot melt polyethylene conveying pipe, a support plate, a conveying pipe support rod and a conveying pipe limiting clamp, the support plate is arranged on the isolation frame, one end of the conveying pipe support rod is arranged on the support plate, the conveying pipe support rod extends vertically for a distance from one end to the other end, then extends horizontally, and then extends vertically again, the conveying pipe limiting clamp is arranged on the conveying pipe support rod, there are multiple conveying pipe limiting clamps, the multiple conveying pipe limiting clamps are arranged at equal intervals on the conveying pipe support rod, the hot melt polyethylene conveying pipe is detachably arranged on the conveying pipe support rod through the conveying pipe limiting clamp, the rotating wire embedding mechanism is composed of a wire embedding mold, a reinforced polyethylene pipe segment support ring, a reinforced polyethylene pipe segment limiting plate, a limiting bolt, an electric resistance wire, a rotating motor, a motor box, a mold support plate and a rotating limiting column, the motor box is arranged in the wire embedding workbench, the rotating motor is arranged in the motor box, the motor shaft of the rotating motor penetrates through the wire embedding workbench, a sealing bearing is arranged between the motor shaft of the rotating motor and the box wall of the wire embedding workbench, the mold support plate is arranged on the motor shaft of the rotating motor and has a distance from the wire embedding workbench, multiple rotating limiting columns are arranged between the mold support plate and the wire embedding workbench, one end of the rotating limiting column is connected with the wire embedding workbench, the other end of the rotating limiting column is provided with a rotating ball, the rotating ball is in contact with the mold support plate, the multiple rotating limiting columns are arranged at equal intervals along the circumference of the mold support plate and are located at the edge of the mold support plate, the wire embedding mold is detachably arranged on the mold support plate, multiple clamping grooves are formed in the mold support plate, one end of the wire embedding mold is provided with clamping columns corresponding to the multiple clamping grooves, the wire embedding mold is detachably arranged on the mold support plate through the cooperation of the clamping columns and the clamping grooves, the other end of the wire embedding mold is in an arc structure, the electric resistance wire is arranged on the wire embedding mold, the electric resistance wire is arranged in two sections on the wire embedding mold, the two sections of the electric resistance wire are electrically connected, the two sections of the electric resistance wire are respectively close to the two ends of the wire embedding mold, the reinforced polyethylene pipe segment support ring is arranged on the wire embedding workbench and the mold support plate is located in the reinforced polyethylene pipe segment support ring, a sealing bearing is arranged between the inner ring wall of the reinforced polyethylene pipe segment support ring and the mold support plate, the height of the reinforced polyethylene pipe segment support ring is higher than the height of the mold support plate, the reinforced polyethylene pipe segment limiting plate is arranged on the reinforced polyethylene pipe segment support ring, there are multiple reinforced polyethylene pipe segment limiting plates, the multiple reinforced polyethylene pipe segment limiting plates are arranged at equal intervals along the circumference of the reinforced polyethylene pipe segment support ring, threaded holes are formed in the reinforced polyethylene pipe segment limiting plate, the limiting bolt is threadedly connected with the reinforced polyethylene pipe segment limiting plate through the threaded holes, and a rubber pad is arranged at the end of the limiting bolt.

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