CN221022321U - Sealing equipment for reinforced composite pipe - Google Patents

Abstract

The utility model relates to the field of pipeline manufacturing equipment, and discloses sealing equipment for a reinforced composite pipe, which comprises a rack (5), a movable frame (6) slidably arranged on the rack, a pipe orifice heating device (2) arranged on the movable frame and used for heating the end face to be sealed of the reinforced composite pipe (4), a sealing ring clamping plate (8) formed with a ring-shaped clamping groove (81), a pipe clamp (7) used for clamping the reinforced composite pipe (4) and a composite pipe axial positioning plate (9) which is adjustably or detachably arranged on the movable frame (6), wherein the composite pipe axial positioning plate (9) can be adjusted or installed to be opposite to the end face to be sealed of the reinforced composite pipe (4) clamped on the pipe clamp (7) so as to position the initial axial position of the reinforced composite pipe (4) by enabling the end face to be sealed to be abutted to the composite pipe axial positioning plate (9). The sealing equipment is beneficial to improving the automation level of the sealing process of the reinforced composite pipe, and is convenient to ensure the sealing quality.

Description

Sealing equipment for reinforced composite pipe

Technical Field

The utility model relates to pipeline manufacturing equipment, in particular to sealing equipment for reinforced composite pipes.

Background

Reinforced composite pipe, generally referred to as a composite pipe reinforced with reinforcement, typically has a structure comprising an inner plastic pipe, a reinforcement layer (reinforcement layer) and an outer plastic pipe arranged in that order from the inside out. The reinforcement layer in the reinforced composite pipe can be a steel wire mesh, a steel belt mesh or an aluminum belt mesh formed by winding or welding.

In order to avoid damage of the reinforcement in the reinforced composite pipe, such as oxidation, corrosion and the like, caused by exposure to air, the cut surface of the pipe can be sealed by using a plastic ring, so that the reinforcement is prevented from being oxidized at the position of the cut end surface, the reinforcement can be stored for a long time, and the reinforcement can be isolated from the conveyed fluid in a pipeline system, so that the fluid cannot enter the reinforcement layer to damage the pipe. Therefore, the end face seal of the reinforced composite tube is of great importance for ensuring service and shelf life.

In the sealing process, it is necessary to coaxially arrange and move the sealing ring and the reinforced composite pipe to be sealed toward each other so as to connect the melted end face of the sealing ring with the end face of the reinforced composite pipe to be sealed and hold for a predetermined time under a predetermined axial pressure, thereby sealing the port of the reinforced composite pipe with the sealing ring. However, the axial pressure applied between the reinforced composite pipe and the sealing ring and the axial displacement thereof depend on the experience of the operator, and the automation level of the production process is low, resulting in uneven quality of the manufactured pipe.

Disclosure of utility model

The utility model aims to solve the problems of low automation level in the sealing process of the reinforced composite pipe and uneven quality of a manufactured pipeline in the prior art, and provides sealing equipment for the reinforced composite pipe, which is beneficial to improving the automation level in the sealing process of the reinforced composite pipe and is convenient to ensure the sealing quality.

In order to achieve the above object, an aspect of the present utility model provides a sealing apparatus for reinforcing a composite pipe, comprising:

A frame;

A moving rack slidably provided on the frame and mounted with a nozzle heating device for heating an end face to be sealed of the reinforced composite pipe and a sealing ring clamping plate formed with an annular clamping groove capable of receiving a sealing ring for docking to the end face to be sealed so that the sealing ring placed in the annular clamping groove is coaxial with the reinforced composite pipe by sliding the moving rack on the frame in a direction perpendicular to an axial direction of the reinforced composite pipe;

A composite pipe support device having a pipe clamp for clamping the reinforced composite pipe, the pipe clamp being drivable to move in an axial direction of the reinforced composite pipe; and

A composite tube axial positioning plate adjustably or detachably mounted to the movable frame and capable of being adjusted or mounted opposite to an end face to be sealed of the reinforced composite tube clamped on the tube clamp to position an initial axial position of the reinforced composite tube by abutting the end face to be sealed to the composite tube axial positioning plate.

Preferably, a driving device which is connected to the composite pipe axial positioning plate in a transmission way is arranged on the moving frame, and can drive the composite pipe axial positioning plate to move between a positioning position and a avoiding position, and when the composite pipe axial positioning plate moves to the positioning position, the composite pipe axial positioning plate is opposite to the end face to be sealed of the reinforced composite pipe; and when the composite pipe axial positioning plate moves to the avoiding position, allowing the end face to be sealed of the reinforced composite pipe to enter the pipe orifice heating device.

Preferably, the moving frame is provided with guide rails which are opposite to each other at intervals and extend along the horizontal direction respectively, and the composite tube axial positioning plate is provided with a sliding block matched with the guide rails and can be driven by the driving device to horizontally slide along the guide rails between the positioning position and the avoiding position.

Preferably, an anti-sticking layer is arranged on the surface of the annular clamping groove.

Preferably, the sealing ring clamping plate is provided with a plurality of annular clamping grooves which are arranged concentrically with each other and are respectively used for receiving the sealing rings with different specifications.

Preferably, a heat-insulating heating plate is arranged on one side of the sealing ring clamping plate, which is away from the opening end of the annular clamping groove.

Preferably, the pipe clamp is slidably mounted on the frame, and sliding directions of the pipe clamp and the moving frame on the frame are perpendicular to each other.

Preferably, the pipe orifice heating device comprises a hot air blower and a hot air ring arranged at the air outlet end of the hot air blower, and is arranged to allow the end face to be sealed of the reinforced composite pipe to enter a hot air duct of the hot air ring so as to blow hot air to the end face to be sealed of the reinforced composite pipe through the hot air blower to enable the end face to be sealed to be molten.

Preferably, a limiter for limiting the limit sliding position of the movable frame is arranged on the frame.

Preferably, the two ends of the composite pipe supporting device are respectively provided with the pipe orifice heating device and the sealing ring clamping plate, so that the two ends of the reinforced composite pipe can be respectively sealed in a clamped state.

According to the technical scheme, the sealing equipment provided by the utility model is provided with the composite pipe axial positioning plate which is arranged on the movable frame and can be arranged or regulated to be opposite to the end face to be sealed of the reinforced composite pipe clamped on the pipe clamp, so that the end face to be sealed can be abutted to the composite pipe axial positioning plate before the reinforced composite pipe clamp is fastened and fixed by the pipe clamp, the initial axial position of the reinforced composite pipe is determined, the subsequent melting and butt joint operations can be automatically controlled by a program, the automation level of the sealing process is further improved, the dependence on the operation experience of operators is reduced, and the sealing quality is convenient to ensure.

Drawings

FIG. 1 is a perspective view of a sealing apparatus for reinforced composite pipes according to a preferred embodiment of the present utility model, wherein a moving rack is positioned such that the reinforced composite pipe is aligned with a pipe orifice heating device, and a composite pipe axial positioning plate is positioned in a positioning position;

FIG. 2 is a perspective view of the sealing apparatus of FIG. 1 with the composite tube axial positioning plate in the dodged position;

FIG. 3 is a perspective view of the sealing apparatus of FIG. 1 with the mobile carriage slid into position such that the reinforced composite tube is aligned with the sealing ring clamp;

FIG. 4 is a perspective view of a seal ring heating device of the sealing apparatus of FIG. 1;

FIG. 5 is a cross-sectional view of the seal ring heating apparatus of FIG. 4;

Fig. 6 is a cross-sectional view of a spout heating device of the sealing apparatus of fig. 1.

Description of the reference numerals

1-A seal ring heating device; 11-a sealing ring heating table; 111-insulating panels; 112-heating plate; 12-underframe; 13-sealing ring pressing plates;

2-a tube orifice heating device; 21-an air heater; 22-a hot air ring; 221-a hot air duct;

3-sealing ring; 4-reinforcing the composite tube; 5-a frame; 51-moving the slide rail; 52-a moving cylinder; 53-a stopper; 6-a movable frame; 61-a guide rail; 62-positioning plate sliding cylinder; 7-a pipe clamp; 8-a sealing ring clamping plate; 81-an annular clamping groove; 9-a composite tube axial positioning plate.

Detailed Description

The following describes specific embodiments of the present utility model in detail with reference to the drawings. It should be understood that the detailed description and specific examples, while indicating and illustrating the utility model, are not intended to limit the utility model.

In the present utility model, unless otherwise indicated, the term "axial" is used to refer generally to a direction along the central axis of the reinforced composite tube to be sealed, and "circumferential" refers generally to a circumferential direction about the central axis. In the present utility model, the "sealing ring" refers to an annular member for joining to an end face (including a cut surface) of a reinforced composite pipe, which may have the same material as a base pipe of the reinforced composite pipe, such as a High Density Polyethylene (HDPE) ring having a wall thickness comparable to or slightly larger than that of the reinforced composite pipe.

As shown in fig. 1 to 3, the sealing method of the sealing apparatus for reinforced composite pipe according to a preferred embodiment of the present utility model includes a fusing step (i.e., step S1) and a welding step (i.e., step S2). Wherein, in step S1, the sealing ring 3 is heated by the sealing ring heating device 1 so that the end face of the sealing ring 3 for joining to the reinforced composite pipe 4 is melted; the end face to be sealed of the reinforced composite pipe 4 is heated by the pipe orifice heating device 2, so that the end face to be sealed is melted. In step S2, the sealing ring 3 and/or the reinforcing composite tube 4 are moved such that the melted end face of the sealing ring 3 is coaxially connected with the end face to be sealed of the reinforcing composite tube 4 and held under a predetermined axial pressure for a predetermined time.

In the sealing method, the sealing ring heating device 1 and the pipe orifice heating device 2 are respectively utilized to heat the end surfaces to be sealed of the sealing ring 3 and the reinforced composite pipe 4 in the melting step, so that the melting state of the end surfaces to be sealed can better meet the sealing requirement, and the final welding effect can be improved. By using different heating means, the end face of the sealing ring 3 can be heated with a relatively long time and/or power during the melting process, so that the thickness of the sealing ring 3 to be melted is large, without excessively melting the end face to be sealed of the reinforced composite pipe 4 heated by another heating means. Therefore, even if the end face to be sealed of the reinforced composite pipe 4 is not polished and has a small amount of uneven area or protruding reinforcement (such as steel wires), the reinforced composite pipe can penetrate into the fused sealing ring 3, so that the pipe grinding step can be omitted, and the sealing efficiency is effectively improved on the premise of ensuring the sealing quality.

After the end face of the sealing ring 3 is heated to be molten by the sealing ring heating device 1, the sealing ring 3 is displaced from the sealing ring heating device 1 into the annular catching groove 81 of the sealing ring catch plate 8, and the molten end of the sealing ring 3 is made to face the open end of the annular catching groove 81, so that the end face to be sealed of the reinforcing composite tube 4 is joined with the molten end face of the sealing ring 3 in the annular catching groove 81. Meanwhile, the sealing ring heating device 1 can be used for heating the next sealing ring to prepare for sealing the cut surface of the pipe of another reinforced composite pipe without consuming additional waiting time required by the sealing ring to reach a sealing process state, thereby effectively improving the production efficiency.

According to the sealing method, the sealing ring heating device 1 and the sealing ring clamping plate 8 which are arranged independently are used for carrying out heating melting of the sealing ring 3 and butt joint operation with the end face to be sealed, so that one sealing ring 3 can be butt-jointed to the end face to be sealed of the reinforced composite pipe 4 in the sealing ring clamping plate 8, and the sealing ring heating device 1 is used for heating the other sealing ring 3 to prepare for sealing of the other reinforced composite pipe 4, and compared with the mode that heating melting and butt joint operation are carried out in the sealing ring clamping plate in the prior art, the production efficiency is effectively improved. Moreover, since the sealing ring heating device 1 is independently arranged to heat and melt the end surface of the sealing ring 3, it can be flexibly arranged in various suitable forms, so that a plurality of sealing rings 3 with the same or different specifications can be heated at the same time, which is beneficial to further improving the production efficiency and improving the applicability of the sealing equipment.

The present utility model provides a sealing apparatus for reinforcing composite pipes, which may be used to perform the sealing method described above. In order to better understand the technical solution, the technical principle and the advantages of the present utility model, the sealing method and the sealing device will be described in an interpenetrating manner.

As described above, the seal ring heating device 1 and the pipe orifice heating device 2 are used for heating the seal ring 3 and the reinforced composite pipe 4, respectively, and the heating and melting effects directly affect the subsequent welding effects, so that reasonable arrangement of the structure and the heating mode of the heating device have important significance for ensuring the seal quality. Wherein, since the sealing ring heating device 1 is provided to be relatively independent from the sealing ring clamping plate 8 for the butt operation, it may be provided to be capable of simultaneously heating a plurality of sealing rings 3 of the same or different specifications.

As shown in connection with fig. 4 and 5, in a preferred embodiment of the present utility model, the sealing ring heating apparatus 1 may include a sealing ring heating stage 11 formed with a horizontal heating stage surface, the sealing ring heating stage 11 being capable of being controlled such that the heating stage surface thereof has a predetermined temperature. In step S1, the sealing ring 3 is placed on the heating table so that the end face of the sealing ring 3 facing the heating table melts, and then the sealing ring 3 is removed from the sealing ring heating table 11 and placed in the annular clamping groove 81. Thus, the seal ring heating table 11 can be set to have a heating mesa area of an appropriate size as needed to heat a plurality of seal rings 3 at the same time.

In use, the sealing ring 3 may be manually placed on the heating table top of the sealing ring heating table 11, which heats up so that the end face of the sealing ring 3 facing the heating table top melts and the molten state of the end face may be maintained. In order to maintain the heating table at the proper process temperature, the sealing ring heating table 11 may be signally connected to a temperature control system (not shown) to enable the end face of the sealing ring 3 to be properly melted and to maintain the proper molten state.

Further, the sealing ring heating stage 11 may include a heat insulating plate 111 and a heating plate 112 arranged from bottom to top and supported by the base frame 12, and a heating stage surface of the sealing ring heating stage 11 is formed on the heating plate 112. Here, the heating plate 112 may employ various suitable electric heating methods, such as resistance heating, induction heating, etc.

Wherein the heating table (i.e. the top surface of the heating plate 112) may be coated with a release layer so that the end face of the sealing ring 3 after being melted can be easily removed. The heat insulating board 111 may be made of suitable materials such as bakelite and heat insulating cotton.

The seal ring heating apparatus 1 may further include a seal ring pressing plate 13. In step S1, the sealing ring 3 is placed on the heating table, and the sealing ring pressing plate 13 applies pressure on the end face of the sealing ring 3 facing away from the heating table so that the end face of the sealing ring 3 facing the heating table melts. By applying pressure on the seal ring 3 by the seal ring pressing plate 13, it is possible to ensure that the end face of the seal ring 3 receives heat of the seal ring heating table 11 quickly and effectively, thereby ensuring the melting effect of the seal ring 3. The sealing ring heating apparatus 1 may be equipped with sealing ring pressing plates 13 of different sizes according to the specifications of the sealing ring 3, as shown in fig. 4.

The annular clamping groove 81 on the sealing ring clamping plate 8 is adapted to receive the sealing ring 3 for welding to the end face to be sealed of the reinforced composite pipe 4. After the end face of the sealing ring 3 is heated to an appropriate molten state by the sealing ring heating device 1, the sealing ring 3 is removed from the sealing ring heating device 1 and placed in the annular clamping groove 81 on the sealing ring clamping plate 8 so as to be welded with the end face to be sealed of the reinforced composite pipe 4 in step S2. Optionally, a heat-preserving heating plate may be disposed on a side of the sealing ring clamping plate 8 facing away from the open end of the annular clamping groove 81, or other auxiliary heating devices may be integrally disposed on the sealing ring clamping plate 8, where the heat-preserving temperature may be, for example, 100-200 ℃, so as to be used to maintain heat in the annular clamping groove 81 in the welding step, and avoid cooling and solidification of the melted portion of the sealing ring 3 before welding, thereby being beneficial to ensuring welding quality.

Meanwhile, by implementing the welding step in the annular clamping groove 81 of the sealing ring clamping plate 8, the welding quality can be effectively ensured. After the sealing ring 3 is placed in the annular clamping groove 11a, under the heat preservation effect of the heat preservation heating plate 12, the sealing ring 3 is moved to a position coaxial with the reinforced composite pipe 4 to be sealed under the state of keeping melting, and then the reinforced composite pipe 4 and the sealing ring clamping plate 8 containing the sealing ring 3 are axially moved relatively so that the end face to be sealed of the reinforced composite pipe 4 enters the annular clamping groove 81, is coaxially connected with the melted end face of the sealing ring 3, and is kept for a preset time under a preset axial pressure. The predetermined axial pressure and the predetermined time may be selected according to factors such as pipe material, degree of melting, etc., and in a preferred embodiment, the predetermined axial pressure may be 0.1MPa to 1MPa and the predetermined time may be 60s to 200s. In this process, the inner peripheral wall of the annular clamping groove 81 guides and restricts the flow of the molten material at the joint position due to the axial compression, so that the predetermined axial pressure applied can be stably applied to the molten material, thereby ensuring the welding quality.

After the welding is completed and the reinforcing composite tube 4 is cooled, the reinforcing composite tube 4 is axially far away from the sealing ring clamping plate 8, so that the sealing ring 3 welded on the reinforcing composite tube 4 is driven to exit the annular clamping groove 81. Wherein, an anti-adhesive layer (such as a polytetrafluoroethylene coating) can be arranged on the surface of the annular clamping groove 81, so as to facilitate the sealing ring 3 to exit from the annular clamping groove 81 along with the reinforced composite pipe 4. In a preferred embodiment, the entire surface of the sealing ring clamping plate 8 is provided with an anti-adhesive layer. After exiting from the annular clamping groove 81, there may be excess material at the junction (inner and outer peripheries) of the sealing ring 3 and the reinforced composite pipe 4, and the excess material may be removed by a trimming tool so that the inner and outer surfaces at the junction are flush with the inner and outer wall surfaces of the reinforced composite pipe 4. In order to facilitate the sealing operation of the reinforced composite pipe 4 of different specifications, the sealing ring clamping plate 8 may be formed with a plurality of annular clamping grooves 81 arranged concentrically with each other and respectively for receiving the sealing rings 3 of different specifications.

In the sealing method and the sealing apparatus according to a preferred embodiment of the present utility model, as shown in fig. 1 to 3 and 6, the end face to be sealed of the reinforced composite pipe 4 is heated with hot air to be melted. Specifically, the nozzle heating device 2 for heating the end face to be sealed of the reinforced composite pipe 4 may include an air heater 21, the air heater 21 being capable of blowing hot air toward the end face to be sealed of the reinforced composite pipe 4 to heat so as to melt the end face to be sealed. By adopting a hot air mode for heating, the heating temperature can be lower than the heating temperature of the sealing ring 3, such as 100-150 ℃, so as to avoid excessive melting of the end face to be sealed of the reinforced composite pipe 4. The air heater 21 is generally an industrial air heater, and its constituent structure and working principle are well known to those skilled in the art, and will not be described in detail herein.

Further, in order to uniformly apply the hot air blown out from the hot air blower 21 to each portion of the end surface to be sealed of the reinforcing composite pipe 4, a hot air ring 22 may be connected to the air outlet end of the hot air blower 21. During the melting process, the reinforced composite pipe 4 can be moved relative to the hot air blower 21 so that the end face to be sealed enters the hot air ring 22 to guide the hot air to be uniformly applied around the circumference of the end face to be sealed.

Specifically, the hot blast ring 22 may include an air inlet portion connected to an air outlet end of the hot blast fan 21, a tapered portion gradually extending from the air inlet portion, and an extending portion extending from the tapered portion, so as to be adapted to allow the reinforcing composite pipe 4 to enter the hot blast ring 22. The hot air ring 22 has an inner plate and an outer plate disposed radially apart from each other with a hot air duct 221 defined therebetween, and hot air blown by the hot air blower 21 is blown onto the end face to be sealed of the reinforcing composite pipe 4 through the hot air duct 223, that is, in the fusing step, the end face to be sealed of the reinforcing composite pipe 4 is projected into the space between the inner plate and the outer plate. The radial dimension of the hot air duct 221 may be set to be slightly larger than the wall thickness of the reinforcing composite pipe 4 so that the reinforcing composite pipe 4 is inserted therein. In addition, the hot air ring 22 of different sizes may be replaced according to the specifications of the reinforced composite pipe 4 to be sealed.

In the sealing process, it is necessary to heat the end face to be sealed of the reinforced composite pipe 4 and the end face of the sealing ring 3 for joining to the reinforced composite pipe 4, respectively, in the melting step, and to make the sealing ring 3 coaxially meet the reinforced composite pipe 4 in the subsequent welding step. In order to improve the sealing efficiency and to avoid solidification of the molten material caused by excessively long switching time in the step switching, it is necessary to reasonably arrange the relative position and movement relationship of the respective portions. Here, referring to fig. 1, the seal ring clamping plate 8 and the nozzle heating device 2 including, for example, the air heater 21 may be mounted on the same moving frame 6, and the moving frame 6 may be slidably mounted on the frame 5 through, for example, a moving slide rail 51 so as to be capable of sliding the seal ring clamping plate 8 and the nozzle heating device 2 in a direction perpendicular to the central axis of the reinforced composite pipe 4 under the driving of, for example, a moving cylinder 52. The frame 51 may further be provided with a stopper 53 for limiting the limit sliding position of the movable frame 6.

After the completion of the heating and melting and the placement of the seal ring 3 in the seal ring clamping plate 8, the moving frame 6 is made to slide on the frame 5, the air heater 21 is moved out of the position coaxial with the reinforced composite pipe 4, and the seal ring pressing plate 8 is moved so that the seal ring 3 therein is coaxial with the reinforced composite pipe 4, whereby coaxial connection can be achieved by the axial relative movement. In the process, the moving frame 6 can be driven to slide by a servo motor or a stepping motor so as to accurately control the moving position and speed of the moving frame, thereby being beneficial to ensuring the sealing quality. By the arrangement, the sealing ring 3 and the reinforced composite pipe 4 can be heated simultaneously in the sealing process, and the melting step is quickly changed into the welding step, so that heat dissipation in the switching process is reduced.

In a preferred embodiment of the utility model, a composite tube axial locating plate 9 is also included for locating the axial position of the reinforced composite tube 4. Before the end face to be sealed of the reinforced composite pipe 4 is heated by the pipe orifice heating device 2, the initial axial position of the reinforced composite pipe 4 is positioned by abutting the end face to be sealed against the composite pipe axial positioning plate 9 mounted on the moving frame 6. Therefore, after the reinforced composite pipe 4 to be sealed is clamped on the pipe clamp 7, the initial axial position of the reinforced composite pipe 4 can be determined by utilizing the composite pipe axial positioning plate 9, so that the automatic control of subsequent heating, welding and other procedures is facilitated, the sealing quality is improved, and the requirements on manual operation proficiency and the like are reduced.

Wherein the composite tube axial positioning plate 9 may be configured to be detachably mounted to the moving frame 6, and the composite tube axial positioning plate 9 is mounted to the moving frame 6 so as to be aligned with the end surface to be sealed of the reinforced composite tube 4 before heating the end surface to be sealed of the reinforced composite tube 4. The reinforced composite pipe 4 is moved in the axial direction so that the end face to be sealed thereof abuts against the composite pipe axial positioning plate 9, and then the reinforced composite pipe 4 is clamped by the pipe clamp 7, thereby determining the initial axial position of the reinforced composite pipe 4.

In the illustrated preferred embodiment, the moving frame 6 is provided with a driving device which is connected to the composite pipe axial positioning plate 9 in a transmission way, the driving device can drive the composite pipe axial positioning plate 9 to move between a positioning position and a avoiding position, and when the composite pipe axial positioning plate 9 moves to the positioning position, the composite pipe axial positioning plate 9 is opposite to the end face to be sealed of the reinforced composite pipe 4; and allows the end face to be sealed of the reinforced composite tube 4 to enter the tube orifice heating device 2 when the composite tube axial positioning plate 9 moves to the avoiding position. The driving device may be, for example, a positioning plate sliding cylinder 62 or a motor.

The composite pipe axial positioning plate 9 may be provided so as to be capable of being driven by the driving means to rotate or move relative to the moving frame 6 to move between the positioning position and the avoidance position. In the illustrated preferred embodiment, the moving frame 6 is provided with guide rails 61 which are opposed to each other at intervals and extend in the horizontal direction, and the composite tube axial positioning plate 9 is provided with a slider which is engaged with the guide rails 61 and can be driven by a driving device such as a positioning plate sliding cylinder 62 to horizontally slide along the guide rails 61 between the positioning position and the escape position.

During the sealing process, the reinforced composite tube 4 to be sealed should be properly supported so as to be coaxially connected with the sealing ring 3. In the illustrated preferred embodiment, the sealing apparatus further comprises a composite pipe support device having a pipe clamp 7 for clamping the reinforced composite pipe 4, the pipe clamp 7 being drivingly connected to a servo motor or a stepper motor for driving the reinforced composite pipe 4 to move in an axial direction, such as may be driven such that the pipe clamp 7 drives the reinforced composite pipe 4 clamped thereby to slide in the axial direction. Thus, when the seal ring 3 is moved to a position coaxial with the reinforced composite pipe 4, the reinforced composite pipe 4 can be driven to move toward the seal ring 3 and welded to the annular groove 81 of the seal ring clamping plate 8.

In addition, in order to further improve the production efficiency, the sealing ring clamping plates 8 and the pipe orifice heating device 2 may be provided at both ends of the composite pipe supporting device, whereby both ends of the reinforced composite pipe 4 can be sealed in a state where the reinforced composite pipe is clamped, respectively, without turning the clamping direction thereof.

For a better understanding of the above-described sealing method and sealing apparatus of the present utility model, the sealing process is exemplified below in connection with the illustrated preferred embodiment:

The sealing ring 3 is placed on the sealing ring heating table 11 to be heated while applying pressure on the sealing ring 3 by the sealing ring pressing plate 13 for a predetermined time so that the end face of the sealing ring 3 is melted.

The composite tube axial positioning plate 9 is moved to a position where the axis of the reinforced composite tube 4 passes through, the reinforced composite tube 4 is clamped to the tube clamp 7, and the tube clamp 7 is driven axially until the end of the reinforced composite tube 4 abuts against the composite tube axial positioning plate 9.

The composite pipe axial locating plate 9 is moved from the locating position to the avoiding position, the reinforced composite pipe 4 is moved into the hot air ring 22 under the drive of the pipe clamp 7, hot air (the temperature is 100-150 ℃) is blown to the end face of the reinforced composite pipe 4, and plastic of the end face is melted. At the same time, the sealing ring 3 with the end face heated and melted is placed in the annular clamping groove 81 of the sealing ring clamping plate 8.

After the end face of the reinforced composite pipe 4 is melted, the reinforced composite pipe 4 is withdrawn from the hot air ring 22, and the seal ring clamping plate 8 (with the seal ring 3) is translated to a position coaxial with the reinforced composite pipe 4.

The servo motor or the stepping motor drives the pipe clamp 7, the reinforced composite pipe 4 moves axially under the drive of the pipe clamp 7 to enable the end face to be sealed to enter the annular clamping groove 81 of the sealing ring clamping plate 8, and is in contact with the sealing ring 3 with the end face in a molten state and maintains pressure for 60s-200s (the pressure is 0.1MPa-1 MPa). After cooling for a period of time, the reinforced composite pipe 4 is retracted, and at this time, the sealing ring 3 and the reinforced composite pipe 4 are welded together and are removed from the annular clamping groove 81.

Finally, excess material at the junction of the sealing ring 3 and the reinforced composite tube 4 is removed by means of a trimming tool.

The preferred embodiments of the present utility model have been described in detail above with reference to the accompanying drawings, but the present utility model is not limited thereto. Within the scope of the technical idea of the present utility model, a number of simple variants of the technical solution of the present utility model are possible, for example, the sealing ring heating device can also take the form as in the prior art CN115816808a, including the various specific technical features combined in any suitable way, without departing from the technical principle. The various possible combinations of the utility model are not described in detail in order to avoid unnecessary repetition. Such simple variations and combinations are likewise to be regarded as being within the scope of the present disclosure.

Claims (10)

1. A sealing apparatus for reinforcing a composite pipe, comprising:

A frame (5);

A moving frame (6) slidably provided on the frame (5) and mounted with a nozzle heating device (2) for heating an end face to be sealed of the reinforcing composite pipe (4) and a sealing ring clamping plate (8) formed with an annular clamping groove (81), the annular clamping groove (81) being formed so as to be able to receive a sealing ring (3) for docking to the end face to be sealed, so that the sealing ring (3) placed in the annular clamping groove (81) is coaxial with the reinforcing composite pipe (4) by sliding the moving frame (6) on the frame (5) in a direction perpendicular to an axial direction of the reinforcing composite pipe (4);

-a composite pipe support device having a pipe clamp (7) for clamping the reinforced composite pipe (4), the pipe clamp (7) being drivable to move in an axial direction of the reinforced composite pipe (4); and

A composite tube axial positioning plate (9), the composite tube axial positioning plate (9) being adjustably or detachably mounted to the movable frame (6) and being capable of being adjusted or mounted opposite to an end face to be sealed of the reinforced composite tube (4) clamped on the tube clamp (7) to position an initial axial position of the reinforced composite tube (4) by abutting the end face to be sealed to the composite tube axial positioning plate (9).

2. A sealing device for reinforced composite pipes according to claim 1, characterized in that the mobile frame (6) is fitted with driving means drivingly connected to the composite pipe axial positioning plate (9), which driving means are able to drive the composite pipe axial positioning plate (9) between a positioning position and a yielding position, which composite pipe axial positioning plate (9) is opposite the end face to be sealed of the reinforced composite pipe (4) when the composite pipe axial positioning plate (9) is moved to the positioning position; and when the composite pipe axial positioning plate (9) moves to the avoiding position, the end face to be sealed of the reinforced composite pipe (4) is allowed to enter the pipe orifice heating device (2).

3. Sealing device for reinforced composite pipes according to claim 2, characterized in that the moving frame (6) is provided with guide rails (61) which are spaced apart from each other and extend in a horizontal direction, respectively, and the composite pipe axial positioning plate (9) is provided with a slide block which cooperates with the guide rails (61) and can be driven by the driving means to slide horizontally along the guide rails (61) between the positioning position and the evacuation position.

4. Sealing device for reinforced composite pipes according to claim 1, characterized in that the surface of the annular clamping groove (81) is provided with an anti-adhesive layer.

5. Sealing device for reinforced composite pipes according to claim 1, characterized in that said sealing ring clamping plate (8) is formed with a plurality of said annular clamping grooves (81) arranged concentrically to each other and respectively for receiving said sealing rings (3) of different gauges.

6. Sealing device for reinforced composite pipes according to claim 1, characterized in that the side of the sealing ring clamping plate (8) facing away from the open end of the annular clamping groove (81) is provided with a heat-insulating heating plate.

7. Sealing device for reinforced composite pipes according to claim 1, characterized in that the pipe clamp (7) is slidably mounted on the frame (5) and that the sliding directions of the pipe clamp (7) and the moving frame (6) on the frame (5) are mutually perpendicular.

8. Sealing apparatus of reinforced composite pipe according to claim 1, wherein the pipe orifice heating means (2) comprises a hot air blower (21) and a hot air ring (22) provided at an air outlet end of the hot air blower (21), and is arranged to allow an end face to be sealed of the reinforced composite pipe (4) to enter a hot air duct (221) of the hot air ring (22) to blow hot air to the end face to be sealed of the reinforced composite pipe (4) by the hot air blower (21) so that the end face to be sealed melts.

9. Sealing device for reinforced composite pipes according to claim 1, characterized in that the frame (5) is provided with a stop (53) for limiting the extreme sliding position of the mobile frame (6).

10. Sealing device for reinforced composite pipes according to claim 1, characterized in that the pipe mouth heating means (2) and sealing ring clamping plates (8) are provided at both ends of the composite pipe supporting means so as to be able to seal both ends of the reinforced composite pipe (4) in a state where the reinforced composite pipe (4) is clamped, respectively.