Automatic grinding device and process for glass fiber reinforced plastic pipe groove

Abstract

The present invention discloses an automatic bevel grinding device and process for glass fiber reinforced plastic pipes, comprising: a threaded screw, an expansion plug is provided on the threaded screw, and the expansion plug is fixed to the threaded screw by a top plug and a locking nut; a hollow shaft, a bearing and a gear sleeve are installed on the hollow shaft, a first scissor-type adjuster is provided on the gear sleeve, and an angle adjustment mechanism is installed on the first scissor-type adjuster; the automatic bevel grinding device for glass fiber reinforced plastic pipes of the present invention adjusts the horizontal distance between the grinding device and the glass fiber reinforced plastic pipe by adjusting the length of the threaded screw entering the hollow shaft; the vertical distance between the grinding device and the glass fiber reinforced plastic pipe can be adjusted by the height of the first scissor-type adjuster; the height of the second scissor-type adjuster and the set scale device can accurately adjust the bevel angle required for grinding the glass fiber reinforced plastic pipe as needed, thereby realizing angle adjustment of the grinding device, effectively ensuring the quality of pipeline bevel grinding, improving grinding accuracy, and facilitating the next step of construction.

Description

Technical Field

[0001] The invention belongs to the technical field of glass fiber reinforced plastic pipe grinding, and particularly relates to an automatic grinding device and process for a glass fiber reinforced plastic pipe groove. Background Art

[0002] Fiberglass pipes are a new type of composite material. They offer high strength, high-pressure resistance, lightweight, easy installation, safety, reliability, corrosion resistance from various corrosive substances, and excellent water leakage prevention, leading to their increasing use in the petrochemical industry. FRP pipes are primarily manufactured using a microcomputer-controlled winding machine with resin as a binder, glass fiber as a reinforcing agent, and quartz sand as a supplementary material. Currently, during construction, the bevels of FRP pipes are typically polished manually using a grinding wheel. Manual polishing is inconvenient, creates a poor grinding environment, results in poor polishing quality, and is inefficient.

[0003] Chinese utility model patent CN212240406 U - A fiberglass pipe bevel grinding device, which supports the inner wall of the fiberglass pipe by a support positioning mechanism, and the grinding mechanism is rotatably set on the support shaft through a grinding mechanism mounting assembly to perform bevel grinding on the end of the fiberglass pipe. Although the fiberglass pipe bevel can be ground, there are the following problems: the grinding mechanism needs to be manually rotated during grinding, so the degree of automation is not high; the grinding angle cannot be accurately adjusted, resulting in poor grinding bevel accuracy; the contact area between the support positioning mechanism and the inner wall of the fiberglass pipe is small, and the support is unstable. Summary of the Invention

[0004] In response to the problems existing in the prior art, the present invention provides an automatic grinding device and process for the groove of a glass fiber reinforced plastic pipe, which can automatically grind the groove of the glass fiber reinforced plastic pipe and accurately adjust the groove grinding angle. It has the characteristics of simple operation, high groove grinding precision and high efficiency.

[0005] The technical solutions of the present invention are as follows:

[0006] In a first aspect of the present invention, an automatic grinding device for a glass fiber reinforced plastic pipe groove comprises:

[0007] A through-thread screw, on which a plug is provided for supporting the glass fiber reinforced plastic pipe, and the plug is fixed to the through-thread screw by a top plug and a locking nut;

[0008] A hollow shaft, a bearing and a gear sleeve are mounted on the hollow shaft, a first scissor-type adjuster is provided on the gear sleeve for adjusting the height of the grinding device, and an angle adjustment mechanism is installed on the first scissor-type adjuster for adjusting the inclination angle of the grinding device;

[0009] The threaded screw and the hollow shaft are fixed by a fixing nut and a locking nut.

[0010] In some embodiments of the present invention, an anti-slip ring is provided on the outer periphery of the expansion plug, a limit block is provided inside the expansion plug, and the expansion plug and the limit block are sleeved together on the threading screw.

[0011] In some embodiments of the present invention, a fixing plate is welded to one end of the hollow shaft, a low-speed drive motor is mounted on the fixing plate, a drive gear is provided on the output shaft of the low-speed drive motor, and the drive gear is engaged with a gear on the gear sleeve.

[0012] In some embodiments of the present invention, the angle adjustment mechanism includes a second scissor-type adjuster and a hinge structure.

[0013] In some embodiments of the present invention, the hinge structure includes a first hinge plate with a cylindrical pin and a second hinge plate with a hinge seat, and the hinge seat is provided with an angle scale.

[0014] In some embodiments of the present invention, a movable plunger hinge is mounted on the first hinge plate, a second scissor-type adjuster is mounted on the second hinge plate, and the movable plunger hinge is fixed above the second scissor-type adjuster.

[0015] In some embodiments of the present invention, a high-speed drive motor is installed on the first hinge plate, and a grinding device is installed on the output shaft of the high-speed drive motor.

[0016] In some embodiments of the present invention, top plugs and locking nuts are provided on both sides of the expansion plug, wherein the locking nut on the side close to the hollow shaft is a manual locking nut.

[0017] In some embodiments of the present invention, the height adjustment range is 0-300 mm, and the angle adjustment range is 0-45°.

[0018] In a second aspect of the present invention, a process for automatically grinding the groove of a glass fiber reinforced plastic pipe is provided, comprising the following steps:

[0019] Put the FRP pipe on the expansion plug, turn the manual locking nut on the left side, push the plug to make it fully expand, firmly support the FRP pipe, and fully tighten it with the threaded screw;

[0020] By adjusting the length of the threaded screw entering the hollow shaft, adjust the horizontal distance between the glass fiber reinforced plastic pipe and the grinding device so that the grinding device is located just above the position to be ground;

[0021] Adjust the height of the first scissor-type adjuster so that the grinding device is in contact with the position to be ground of the glass fiber reinforced plastic pipe, and then adjust the height of the second scissor-type adjuster to adjust the angle of the grinding device according to the scale displayed by the scale device;

[0022] Start the low-speed drive motor and the high-speed drive motor. The low-speed drive motor enables the entire grinding device to rotate slowly around the glass fiber reinforced plastic pipe, and the high-speed drive motor enables the grinding disc in the grinding device to rotate quickly, ultimately completing the rapid grinding of the glass fiber reinforced plastic pipe groove.

[0023] One or more technical solutions of the present invention have the following beneficial effects:

[0024] (1) The present invention utilizes a low-speed drive motor and a high-speed drive motor to realize a grinding device to automatically grind the groove of the glass fiber reinforced plastic pipe, and utilizes automatic grinding to replace manual grinding, which has the characteristics of simple operation, high grinding groove precision and high efficiency.

[0025] (2) The automatic bevel grinding device of the FRP pipe of the present invention supports the bevel grinding requirements of FRP pipes of different specifications and sizes. According to the size of the FRP pipe, a suitable replaceable rubber expansion plug is selected. The rubber expansion plug can fill the entire FRP pipe under the action of the top plug, thereby improving the stability of the FRP pipe during grinding.

[0026] (3) The automatic bevel grinding device for FRP pipes of the present invention can adjust the horizontal distance between the grinding device and the FRP pipe by adjusting the length of the threaded screw entering the hollow shaft; the vertical distance between the grinding device and the FRP pipe can be adjusted by the height of the first scissor-type adjuster; the bevel angle required for grinding the FRP pipe can be accurately adjusted as needed by the height of the second scissor-type adjuster and the set scale device, thereby realizing the angle adjustment of the grinding device, effectively ensuring the quality of pipeline bevel grinding, improving the grinding accuracy, and facilitating the next step of construction. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 Schematic diagram of the overall structure of the automatic bevel grinding device for glass fiber reinforced plastic pipes of the present invention;

[0028] Figure 2 This is a schematic diagram of the angle display device provided on the automatic bevel grinding device for glass fiber reinforced plastic pipes of the present invention.

[0029] In the figure: 1. expansion plug, 2. top plug, 3. limit block, 4. first locking nut, 5. through-thread screw, 6. second locking nut, 7. hollow shaft, 8. manual locking nut, 9. low-speed drive motor, 10. drive gear, 11. bearing, 12. gear sleeve, 13. first scissor-type adjuster, 14. second scissor-type adjuster, 15. movable plunger hinge, 16. high-speed drive motor, 17. grinding device, 18. scale device, 19. first hinge plate, 20. second hinge plate, 21. anti-slip ring, 22. fixing nut, 23. fixing plate. DETAILED DESCRIPTION

[0030] It should be noted that the following detailed descriptions are illustrative and intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which the present invention belongs.

[0031] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components and / or combinations thereof.

[0032] For the convenience of description, if the words "up", "down", "left" and "right" appear in the present invention, they only indicate that they are consistent with the up, down, left and right directions of the drawings themselves, and do not limit the structure. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, they cannot be understood as limiting the present invention.

[0033] Example 1

[0034] In a typical embodiment of the present invention, a glass fiber reinforced plastic pipe groove automatic grinding device is proposed, such as Figure 1 、 Figure 2 As shown, it includes a threaded screw 5 and a hollow shaft 7, and a plug 1 is provided on the threaded screw 5 for supporting the glass fiber reinforced plastic pipe. The plug 1 is fixed to the threaded screw by a top plug 2 and a locking nut; a bearing 11 and a gear sleeve 12 are installed on the hollow shaft 7, and a first scissor-type adjuster 13 is provided on the gear sleeve 12 for adjusting the height of the grinding device. An angle adjustment mechanism is installed on the first scissor-type adjuster 13, and the angle adjustment mechanism is used to adjust the inclination angle of the grinding device 17; the threaded screw 5 is fixed by a fixing nut 22 and a second locking nut 6.

[0035] The expansion plug 1 is a cylindrical rubber expansion plug with a through hole in the middle, which has a certain elasticity. A limit block 3 is installed in the through hole of the expansion plug. The limit block 3 is a cylindrical structure. The width of the limit block 3 is smaller than the width of the expansion plug 1. The limit block 3 and the expansion plug 1 are together sleeved on the threaded screw; top plugs 2 are installed on both sides of the expansion plug. The top plug is a hollow conical structure, and the side with a smaller cross-sectional area faces the expansion plug; a manual locking nut 8 is installed on the outside of the left top plug, and a first locking nut 4 is installed on the outside of the right top plug; by turning the manual locking nut on the left, the top plug makes the expansion plug fully expand, firmly fills the glass fiber reinforced plastic pipe, and is completely tightened with the threaded screw. The limit blocks ensure that the positions of the top plugs on both sides are moderate, which can avoid the problem of the top plug being unable to be removed due to excessive advancement.

[0036] In this embodiment, an anti-slip ring 21 is provided on the outer periphery of the expansion plug, so that the expansion plug can better generate friction with the inner wall of the FRP pipe, so that the entire expansion plug is firmly fixed to the FRP pipe; it is also possible to replace expansion plugs of different sizes to be suitable for FRP pipes of different sizes, thereby realizing the grinding of FRP pipes of various specifications.

[0037] One end of the hollow shaft 7 is provided with a fixing nut 22 , the threaded screw 5 extends into the interior of the hollow shaft 7 , and the threaded screw 5 and the hollow shaft 7 are fixed by the cooperation of the second locking nut 6 and the fixing nut 22 .

[0038] By adjusting the length of the threaded screw 5 extending into the hollow shaft 7, the distance between the hollow shaft and the FRP pipe can be adjusted, and then the horizontal distance between the FRP pipe and the grinding device can be adjusted to meet the spatial operation requirements of on-site construction.

[0039] A fixed plate 23 is welded below the other end of the hollow shaft 7, and a low-speed drive motor 9 is installed on the fixed plate. A drive gear 10 is installed on its output shaft, and a bearing 11 is installed on the hollow shaft. A gear sleeve 12 is provided on the bearing. The gears on the drive gear 10 and the gear sleeve 12 are engaged with each other. Under the drive of the low-speed drive motor, the gear sleeve rotates and the bearing rotates at a low speed.

[0040] A first scissor-type adjuster 13 is welded and installed on the gear sleeve 12, and an angle adjustment mechanism is installed on the first scissor-type adjuster. The angle adjustment mechanism includes a second scissor-type adjuster 14 and a hinge structure. The hinge structure includes a second hinge plate 20 with a hinge seat and a first hinge plate 19 with a cylindrical pin. The second hinge plate 20 is directly installed on the first scissor-type adjuster 13. The hinge seat and the cylindrical pin cooperate with each other to realize the rotation of the first hinge plate 19. An angle scale is provided on the hinge seat to form a scale device 18, which can directly show the rotation angle of the first hinge plate 19; a movable plunger hinge 15 is installed on the left side of the first hinge plate 19, and a base plate is installed on the left side of the second hinge plate 20, and the second scissor-type adjuster 14 is installed on the base plate. The movable plunger hinge 15 is installed above the second scissor-type adjuster 14, and a high-speed drive motor 16 is installed on the right side of the first hinge plate, and its output shaft is connected to the grinding device 17.

[0041] By adjusting the second scissor-type adjuster 14 up and down, the movable plunger hinge 15 is driven to pull the grinding device 17 to tilt, thereby achieving angle adjustment of the grinding device.

[0042] It is understandable that, regarding the fixing and installation of the various components in this solution, those skilled in the art can select the fixing and installation methods as needed.

[0043] The method of using the glass fiber reinforced plastic pipe groove grinding device of this embodiment is as follows:

[0044] Select a replaceable rubber expansion plug of the corresponding size based on the size of the FRP pipe. Thread the stopper 3 and expansion plug 1 through the through-thread screw 5. Install the top plug 2 on both sides first, then the locknut. Tighten the locknut on the right side, install the expansion plug into the FRP pipe, and then turn the manual locknut 8 on the left side to fully expand the expansion plug, firmly filling the FRP pipe and completely tightening it with the through-thread screw 5. The stopper prevents the top plug from being over-extended and becoming impossible to remove.

[0045] Insert the left side of the threaded screw 5 into the hollow shaft 7 with a fixing nut, and use the locking nut to fix the hollow shaft and the threaded screw according to the horizontal distance between the grinding device and the glass fiber reinforced plastic pipe; adjust the vertical distance between the grinding device and the glass fiber reinforced plastic pipe by adjusting the height of the first scissor-type adjuster 13; drive the movable plunger hinge 15 to pull the grinding device by adjusting the height of the second scissor-type adjuster 14, and adjust it to a suitable angle according to the scale displayed by the scale device 18, fix the scissor-type adjuster 2, and realize the angle adjustment of the grinding device.

[0046] The operating principle is as follows: Starting the low-speed drive motor 9 drives the gear 10, which drives the gear sleeve 12 to rotate at a low speed, thereby driving the gear sleeve and the entire grinding device to rotate slowly, achieving automatic grinding. Starting the high-speed drive motor 16 drives the grinding device's internal grinding disc to rotate rapidly, quickly grinding the FRP pipe. When the groove is polished, the low-speed drive motor is turned off, and the manual locking nut on the left is loosened. The expansion plug shrinks and is removed from the FRP pipe, completing the polishing process.

[0047] The automatic glass fiber reinforced plastic pipe groove grinding device of this embodiment achieves the purpose of quickly and accurately grinding the glass fiber reinforced plastic pipe groove. The rubber expansion plug is replaced according to the size of the glass fiber reinforced plastic pipe on site and can be disassembled and recycled. The grinding angle can be set according to needs and mechanical grinding is fully realized. The angle is precise, the operation is simple, and the application range is wide. The device is reusable and suitable for glass fiber reinforced plastic pipes of various sizes, thereby improving construction efficiency and construction quality.

[0048] In this embodiment, the first scissor-type adjuster has an upward and downward adjustment range of 0-300mm, meeting the requirements for grinding fiberglass pipes of different sizes. The angle adjustment range is 0-45°, meeting the requirements for grinding bevels of different angles. The angle adjustment device is marked with a scale that displays the degree, allowing for precise and fast angle adjustment. The entire device is made of stainless steel, is lightweight and durable, and is easy to operate. It features automatic bevel grinding and rapid adjustment of the grinding angle, achieving high precision and efficiency.

[0049] Example 2

[0050] In a typical embodiment of the present invention, a process for automatically grinding the groove of a glass fiber reinforced plastic pipe is proposed, comprising the following steps:

[0051] Put the FRP pipe on the expansion plug, turn the manual locking nut on the left side, push the plug to make it fully expand, firmly support the FRP pipe, and fully tighten it with the threaded screw;

[0052] By adjusting the length of the threaded screw entering the hollow shaft, adjust the horizontal distance between the glass fiber reinforced plastic pipe and the grinding device so that the grinding device is located just above the position to be ground;

[0053] Adjust the height of the first scissor-type adjuster so that the grinding device is in contact with the position to be ground of the glass fiber reinforced plastic pipe, and then adjust the height of the second scissor-type adjuster to adjust the angle of the grinding device according to the scale displayed by the scale device;

[0054] Start the low-speed drive motor and the high-speed drive motor. The low-speed drive motor enables the entire grinding device to rotate slowly around the glass fiber reinforced plastic pipe, and the high-speed drive motor enables the grinding disc in the grinding device to rotate quickly, ultimately completing the rapid grinding of the glass fiber reinforced plastic pipe groove.

[0055] The embodiments described above provide a detailed description of the technical solutions of the present invention. It should be understood that the above are only specific embodiments of the present invention and are not intended to limit the present invention. Any modifications, supplements or similar substitutions made within the scope of the principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. An automatic grinding device for the groove of a glass fiber reinforced plastic pipe, characterized in that: include: A through-thread screw, on which a plug is provided for supporting the glass fiber reinforced plastic pipe, and the plug is fixed to the through-thread screw by a top plug and a locking nut; A hollow shaft, a bearing and a gear sleeve are mounted on the hollow shaft, a first scissor-type adjuster is provided on the gear sleeve for adjusting the height of the grinding device, and an angle adjustment mechanism is installed on the first scissor-type adjuster for adjusting the inclination angle of the grinding device; The threaded screw and the hollow shaft are fixed by a fixing nut and a locking nut; The angle adjustment mechanism includes a second scissor-type adjuster and a hinge structure; The hinge structure includes a first hinge plate with a cylindrical pin and a second hinge plate with a hinge seat; the hinge seat is provided with an angle scale; Top plugs and locking nuts are arranged on both sides of the expansion plug.

2. The automatic grinding device for the groove of a glass fiber reinforced plastic pipe according to claim 1, characterized in that: An anti-slip ring is arranged on the outer periphery of the expansion plug, a limiting block is arranged inside the expansion plug, and the expansion plug and the limiting block are sleeved on the threading screw together.

3. The automatic grinding device for the groove of a glass fiber reinforced plastic pipe according to claim 1, characterized in that: A fixing plate is welded to one end of the hollow shaft, a low-speed driving motor is mounted on the fixing plate, a driving gear is arranged on the output shaft of the low-speed driving motor, and the driving gear is meshed with a gear on the gear sleeve.

4. The automatic grinding device for the groove of a glass fiber reinforced plastic pipe according to claim 1, characterized in that: A movable plunger hinge is installed on the first hinge plate, a second scissor-type adjuster is installed on the second hinge plate, and the movable plunger hinge is fixed above the second scissor-type adjuster.

5. The automatic grinding device for the groove of a glass fiber reinforced plastic pipe according to claim 1, characterized in that: A high-speed driving motor is installed on the first hinged plate, and a grinding device is installed on the output shaft of the high-speed driving motor.

6. The automatic grinding device for the groove of a glass fiber reinforced plastic pipe according to claim 1, characterized in that: The locking nut on one side of the expansion plug close to the hollow shaft is a manual locking nut.

7. The automatic grinding device for the groove of a glass fiber reinforced plastic pipe according to claim 1, characterized in that: The height adjustment range is 0-300mm, and the angle adjustment range is 0-45°.

8. An automatic grinding process for a glass fiber reinforced plastic pipe groove, implemented by using the automatic grinding device for a glass fiber reinforced plastic pipe groove according to any one of claims 1 to 7, characterized in that: The following steps are involved: Put the FRP pipe on the expansion plug, turn the manual locking nut on the left side, push the plug to make it fully expand, firmly support the FRP pipe, and fully tighten it with the threaded screw; By adjusting the length of the threaded screw entering the hollow shaft, adjust the horizontal distance between the glass fiber reinforced plastic pipe and the grinding device so that the grinding device is located just above the position to be ground; Adjust the height of the first scissor-type adjuster so that the grinding device is in contact with the position to be ground of the glass fiber reinforced plastic pipe, and then adjust the height of the second scissor-type adjuster to adjust the angle of the grinding device according to the scale displayed by the scale device; Start the low-speed drive motor and the high-speed drive motor. The low-speed drive motor enables the entire grinding device to rotate slowly around the glass fiber reinforced plastic pipe, and the high-speed drive motor enables the grinding disc in the grinding device to rotate quickly, ultimately completing the rapid grinding of the glass fiber reinforced plastic pipe groove.

Images