Production method and device of continuous winding glass reinforced plastic pipe with fatigue resistance and chemical resistance

Abstract

The invention discloses a production method and device for a continuously wound glass reinforced plastic pipe with fatigue resistance and chemical resistance, and the production method is characterized by comprising the following steps: driving a mold to rotate by a driving device, and then winding an anti-leakage film on the mold; the diallyl phthalate and unsaturated polyester resin composite liquid is sprayed on the anti-leakage film; the chopped glass fibers are scattered on the composite liquid of the diallyl phthalate and the unsaturated polyester resin on the anti-leakage film; scattering granular fillers such as quartz sand outside the chopped glass fibers; high-linear-density continuous fibers are wound outside the chopped glass fibers and the quartz sand and enter a curing room to be subjected to far infrared and induction heating curing; after curing, the formed continuous winding glass fiber reinforced plastic is cut by a cutting device. The adhesive force of the glass fiber is improved and the curing shrinkage rate of the pipeline is reduced by utilizing diallyl phthalate to form a compact structure, so that the compactness of a pipe body is improved, and the fatigue resistance and chemical resistance are further improved.

Description

Technical Field

[0001] This invention relates to the field of continuous winding fiberglass pipe technology, specifically to a method and apparatus for producing continuously wound fiberglass pipes with fatigue resistance and chemical resistance. Background Technology

[0002] Continuously wound fiberglass pipes are produced by winding glass fibers onto a mold and then curing them. However, in existing technologies, as the amount and density of continuous glass fibers wound onto the mold increase, the tension of the continuous glass fibers during winding also increases. Furthermore, as the continuous glass fibers pass through the guide rings and guide shafts, impurities tend to accumulate in the guide grooves over time, increasing resistance and making the wound glass fibers prone to breakage. Moreover, workers are also involved in pipe handling and other tasks during production, making it impossible to monitor the continuous glass fiber winding process in real time. Even small numbers of broken fibers may go unnoticed, reducing the density of the winding and consequently lowering fatigue resistance and chemical resistance. Therefore, this paper proposes a production method and apparatus for continuously wound fiberglass pipes with improved fatigue and chemical resistance. Summary of the Invention

[0003] The purpose of this invention is to solve the above problems by proposing a method and apparatus for producing continuously wound fiberglass pipes with fatigue resistance and chemical resistance.

[0004] To achieve the above objectives, the present invention provides the following technical solution: a method for producing continuously wound fiberglass pipes with fatigue resistance and chemical resistance, characterized in that the production method steps are as follows: 1) First, drive the mold to rotate using the drive device, and then wrap the leak-proof membrane around the outer surface of the mold; 2) Pour unsaturated polyester resin liquid onto the outer surface of the leak-proof membrane that rotates with the mold; 3) Then, the set amount of chopped glass fibers is sprinkled axially onto the unsaturated polyester resin on the waterproof membrane; 4) Sprinkle granular fillers such as quartz sand along the axial direction outside the short glass fibers according to the designed position, width, and flow rate; 5) Then, several continuous fibers are wound around the outside of chopped glass fiber and quartz sand. While the continuous fibers are being wound, the weight of the remaining continuous fiber roll is monitored in real time by the weighing sensor at each station on the continuous fiber mounting frame. This helps to remind workers to prepare new continuous fiber rolls in advance to continue winding without gaps. The sensor set between the tension adjustment frame and the continuous fiber guide ring is used to sense in real time whether there is a break in the tape or wire during the winding of the continuous fibers, thereby ensuring the compactness of the continuous fiber winding. 6) Enter the curing chamber for heating and curing; after curing, the formed continuous wound fiberglass management is cut by the cutting device.

[0005] Preferably, the unsaturated polyester resin can be replaced with diallyl phthalate or a mixture of unsaturated polyester resin and diallyl phthalate to improve the adhesion of glass fiber and reduce curing shrinkage to form a dense structure, thereby improving the compactness of the tube and thus improving fatigue resistance and chemical resistance.

[0006] Preferably, a time module is also included in the weighing sensor. When the sensor is not working, the time module and the weighing sensor can be used together to determine whether the continuous fiber is broken.

[0007] An apparatus for producing continuously wound fiberglass pipes with fatigue and chemical resistance properties is characterized by comprising: a wire frame for placing continuous fibers, a continuous fiber guide ring and a guide shaft for guiding the winding of continuous fibers, and a mold for facilitating the winding of fiberglass; a sensor for real-time sensing of the continuous fibers is installed on the continuous fiber guide ring; a weighing sensor for real-time sensing of the remaining weight of the continuous fibers is installed on the wire frame, and a control module connected to the sensor and the weighing sensor.

[0008] Preferably, the wire frame is also equipped with a tension adjustment frame for adjusting the tension of the continuous fibers.

[0009] Preferably, the control module is also connected to an alarm module and an alarm connected to the alarm module.

[0010] Preferably, a time module is also included within the weighing sensor.

[0011] The beneficial effects of this invention are: by utilizing diallyl phthalate to improve the adhesion of glass fibers and reduce the curing shrinkage rate of pipes to form a dense structure, the compactness of the pipe body is improved, thereby enhancing fatigue resistance and chemical resistance. By using a weighing sensor to monitor the remaining weight of the continuous fiber roll in real time, workers can be reminded to prepare new continuous fiber rolls in advance to continue winding without gaps, thereby improving the compactness of the pipe winding and thus improving fatigue resistance and chemical resistance. By using sensors to detect breakage during continuous fiber winding in real time, a signal can be sent directly when a continuous fiber breaks, facilitating timely handling by workers. This improves the quality of fiberglass pipe winding, ensuring the compactness of the continuous fiber winding and thus enhancing fatigue resistance and chemical resistance. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the present invention.

[0013] Figure 2 This is a schematic diagram of the wire frame structure of the present invention.

[0014] Figure 3 This is a schematic diagram of the present invention.

[0015] Legend: 1. Wire frame; 101. Weighing sensor; 102. Time module; 2. Continuous fiber guide ring; 201. Sensor; 3. Mold; 4. Control module; 5. Alarm module; 501. Alarm; 6. Guide shaft; 7. Tension adjustment frame. Detailed Implementation

[0016] The following description, in conjunction with the accompanying drawings, further illustrates the production method and apparatus for the continuously wound fiberglass pipe with fatigue resistance and chemical resistance described in this invention.

[0017] It should be noted that all directional indications in the embodiments of the present invention, such as up, down, left, right, front, back, etc., are only used to explain the relative positional relationship and movement of the components in a specific posture as shown in the attached figure. If the specific posture changes, the directional indication will also change accordingly.

[0018] In one embodiment, a method for producing continuously wound fiberglass pipes with fatigue resistance and chemical resistance: 1) First, drive the mold to rotate using the drive device, and then wrap the leak-proof membrane around the outer surface of the mold 3; 2) Apply unsaturated polyester resin to the outer surface of the leak-proof membrane as it rotates with mold 3; 3) Then, the set amount of chopped glass fibers is sprinkled axially onto the unsaturated polyester resin on the waterproof membrane. The unsaturated polyester resin helps the chopped glass fibers adhere to the outer surface of the waterproof membrane, preventing them from falling off. 4) Sprinkle granular fillers such as quartz sand along the axial direction outside the short glass fibers according to the designed position, width, and flow rate; 5) Then, several continuous fibers are wound around the outside of chopped glass fiber and quartz sand, while a pressure roller is used to press and flatten the continuous fibers by pressing them tightly against the outer wall after they are wound. During continuous fiber winding, the weighing sensor 101 at the bottom of the continuous fiber is used to detect the remaining weight of the continuous fiber in real time and send the detected signal to the control module 4. When the weighing sensor 101 at the bottom of the continuous fiber detects that the remaining weight of the continuous fiber has reached the set weight, the control module 4 controls the alarm 501 on the alarm module 5 to sound an alarm, reminding the staff to prepare new continuous fibers in time to ensure uninterrupted winding of the continuous fiber and improve the tightness of the pipe winding. Sensor 201 can use a photoelectric sensor. When the continuous fiber is winding normally, the continuous fiber is in a taut state and will block the light beam, thus indicating that the continuous fiber is not broken. When the continuous fiber is broken, the continuous fiber is in a slack state and cannot block the light beam, thus indicating that the continuous fiber is broken. Sensor 201 sends a signal to control module 4, and control module 4 controls alarm 501 on alarm module 5 to sound an alarm, reminding staff to deal with it in time and prevent the pipeline from reducing the amount of continuous fiber winding, reducing the winding density, and thus reducing fatigue resistance and chemical resistance. 6) Enter the curing chamber for heating and curing; after curing, the formed continuous wound fiberglass management is cut by the cutting device.

[0019] In one embodiment, diallyl phthalate is used instead of unsaturated polyester resin, or diallyl phthalate and unsaturated polyester resin are combined and then used. The diallyl phthalate is used to improve the adhesion of glass fiber and reduce the curing shrinkage rate of the pipe to form a dense structure, thereby improving the compactness of the pipe body and thus improving fatigue resistance and chemical resistance. The technical solution using diallyl phthalate can be used simultaneously with the technical method of sensor 201 during the continuous winding of fiberglass pipe production, or used by rotating one of them.

[0020] In one embodiment, a time module 102 is also included within the weighing sensor 101. When the sensor 201 does not generate a signal, but the control module receives signals from the weighing sensor 101 and the time module 102, if the weight of the continuous fiber on the weighing sensor 101 does not change as time progresses on the time module 102, it indicates that the continuous fiber at that location has broken. The control module 4 then controls the alarm 501 on the alarm module 5 to sound an alarm, reminding the worker to handle the situation promptly. When the weight of the continuous fiber on the weighing sensor 101 decreases as time progresses on the time module 102, it indicates that the continuous fiber is winding normally without breakage, thereby ensuring the tightness of the winding and improving fatigue resistance and chemical resistance.

[0021] The above embodiments are illustrative of the present invention and are not intended to limit the present invention. Any simple modifications to the present invention are within the scope of protection of the present invention.

Claims

1. A method for producing continuously wound fiberglass pipes with fatigue resistance and chemical resistance, characterized in that: The production method steps are as follows: 1) First, drive the mold to rotate using the drive device, and then wrap the leak-proof membrane around the outer surface of the mold; 2) Pour unsaturated polyester resin liquid onto the outer surface of the leak-proof membrane that rotates with the mold; 3) Then, the set amount of chopped glass fibers is sprinkled axially onto the unsaturated polyester resin on the waterproof membrane; 4) Sprinkle granular fillers such as quartz sand along the axial direction outside the short glass fibers according to the designed position, width, and flow rate; 5) Then, several continuous fibers are wound around the outside of chopped glass fiber and quartz sand. While the continuous fibers are being wound, the weight of the remaining continuous fiber roll is monitored in real time by the weighing sensor at each station on the continuous fiber mounting frame. This helps to remind workers to prepare new continuous fiber rolls in advance to continue winding without gaps. The sensor set between the tension adjustment frame and the continuous fiber guide ring is used to sense in real time whether there is a break in the tape or wire during the winding of the continuous fibers, thereby ensuring the compactness of the continuous fiber winding. 6) Enter the curing chamber for heating and curing; after curing, the formed continuous wound fiberglass management is cut by the cutting device.

2. The method for producing a continuously wound fiberglass pipe with fatigue resistance and chemical resistance according to claim 1, characterized in that: The unsaturated polyester resin can also be replaced with diallyl phthalate or a mixture of unsaturated polyester resin and diallyl phthalate to improve the adhesion of glass fiber and reduce curing shrinkage to form a dense structure, thereby improving the compactness of the tube and thus improving fatigue resistance and chemical resistance.

3. The method for producing a continuously wound fiberglass pipe with fatigue resistance and chemical resistance according to claim 1, characterized in that: It also includes a time module installed in the weighing sensor. When the sensor is not working, the time module and the weighing sensor can work together to determine whether the continuous fiber is broken.

4. The apparatus for producing continuously wound fiberglass pipes with fatigue resistance and chemical resistance according to any one of claims 1-3, characterized in that: It includes a wire frame (1) for placing continuous fibers, a continuous fiber guide ring (2) and a guide shaft for guiding the winding of continuous fibers, and a mold (3) for facilitating the winding of glass fibers; a sensor (201) for real-time sensing of continuous fibers is installed on the continuous fiber guide ring (2); a weighing sensor (101) for real-time sensing of the remaining weight of continuous fibers is installed on the wire frame (1), and a control module (4) connected to the sensor (201) and the weighing sensor (101).

5. The apparatus for producing continuously wound fiberglass pipes with fatigue resistance and chemical resistance according to claim 4, characterized in that: The wire frame (1) is also equipped with a tension adjustment frame for adjusting the tension of continuous fibers.

6. The apparatus for producing continuously wound fiberglass pipes with fatigue resistance and chemical resistance according to claim 4, characterized in that: The control module (4) is also connected to an alarm module (5) and an alarm (501) connected to the alarm module (5).

7. The apparatus for producing continuously wound fiberglass pipes with fatigue resistance and chemical resistance according to claim 4, characterized in that: It also includes a time module (102) disposed within the weighing sensor (101).

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