Glass fiber reinforced plastic pipe pultrusion device
By designing multiple sets of liftable grinding components in the fiberglass pipe pultrusion molding device, the problem of grinding blind spots was solved, resulting in more uniform grinding of the fiberglass pipe surface and improved production efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JIANGSU XINLANRUI MATERIAL TECHNOLOGY CO LTD
- Filing Date
- 2025-06-10
- Publication Date
- 2026-07-14
AI Technical Summary
In existing fiberglass pipe pultrusion molding equipment, the dispersed grinding structure leads to grinding blind spots, affecting surface quality and production efficiency.
A fiberglass pipe pultrusion molding device is designed, which adopts multiple sets of grinding components that abut against each other along the circumference of the cylinder and can be raised and lowered. The cylinder is driven to rotate by the drive component, and the fiberglass pipe is led out by the transmission component, which can adapt to different pipe diameters and reduce the ungrinded area.
This method achieves more uniform grinding of the fiberglass pipe surface, reduces grinding blind spots, and improves surface smoothness and production efficiency.
Smart Images

Figure CN224490157U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of fiberglass pipe technology, specifically to a fiberglass pipe pultrusion molding device. Background Technology
[0002] In the manufacturing of fiberglass pipes, pultrusion molding is widely used due to its high efficiency and continuous production characteristics. This process mainly includes key steps such as resin impregnation, mold forming, heat curing, and traction cutting. After pultrusion molding, the outer surface of the fiberglass pipe usually needs to be polished to improve surface quality and meet the requirements of subsequent processing or use.
[0003] In existing fiberglass tube pultrusion molding equipment, the grinding structure is often dispersed. For example, some equipment uses multiple independently distributed grinding heads to treat the outer surface of the fiberglass tube. This dispersed grinding structure has significant drawbacks: during the pultrusion process, due to the lack of an effective coordination mechanism between the grinding heads, some areas are easily left unpolished, creating grinding blind spots. This not only leads to uneven surface quality of the fiberglass tube, affecting the product's appearance and performance, but may also require additional manual grinding later, increasing production costs and reducing production efficiency.
[0004] Therefore, it is necessary to improve the existing fiberglass pipe pultrusion molding equipment and design a device with a more reasonable grinding structure to ensure that the outer surface of the fiberglass pipe can be fully and uniformly ground during the pultrusion molding process, eliminate grinding blind spots, and improve product quality and production efficiency. Utility Model Content
[0005] To address the shortcomings of existing technologies, this utility model proposes a fiberglass pipe pultrusion molding device to solve the technical problem mentioned in the background that existing grinding structures are prone to grinding blind spots.
[0006] To solve this technical problem, the technical solution adopted by this utility model is as follows:
[0007] A fiberglass pipe pultrusion molding apparatus includes a base plate, a first fixed plate, a first cylinder, a round block, a cooling mechanism, a second fixed plate, a second cylinder, a heating mechanism, a grinding assembly, a driving assembly, and a transmission assembly.
[0008] The first fixing plate and the second fixing plate are respectively fixed on the base plate. The first cylinder is fixed on the first fixing plate. The circular block is coaxially fixed inside the first cylinder. The cooling mechanism passes through the first cylinder.
[0009] The second cylinder is rotatably mounted on the second fixed plate and sleeved on the first cylinder. The heating mechanism passes through the second cylinder. Multiple grinding components are provided and are mutually abutted along the circumference of the second cylinder. The grinding components can be raised and lowered and limit the height position after raising and lowering. The driving component is mounted on the second fixed plate and can drive the second cylinder to rotate. The transmission component is mounted on the base plate and can lead out the fiberglass pipe.
[0010] Furthermore, the grinding assembly includes a threaded rod, a rotating ball, a connecting plate, a lifting rod, and a grinding roller; the threaded rod is screwed onto the second cylinder and connected to the connecting plate via the rotating ball; the connecting plate is vertically and flexibly disposed inside the second cylinder via the lifting rod; and the grinding roller is disposed on the side of the connecting plate near the axis of the second cylinder.
[0011] Furthermore, a positioning plate is fixed on the threaded rod of each of the grinding components at intervals.
[0012] Furthermore, the drive assembly includes a drive motor, a drive gear, and a gear ring; the gear ring is coaxially fixed on the second cylinder, the drive motor is fixed on the second fixed plate, and the drive gear is coaxially fixed on the output shaft of the drive motor and meshes with the gear ring.
[0013] Furthermore, the transmission assembly includes a transmission plate, a transmission roller, and a driven roller; the transmission plate is fixed on the base plate, and the transmission roller and the driven roller are rotatably connected to the transmission plate.
[0014] The advancements of this application compared to existing technologies are as follows:
[0015] In this application, by having adjacent grinding components close together, the grinding process can cover more of the fiberglass pipe area, thereby reducing the ungrinded area of the fiberglass pipe and making the surface of the fiberglass pipe smoother.
[0016] In addition, the height-adjustable feature of the grinding components allows for adjustment of the height of each component to meet the grinding needs of different pipe diameters. Attached Figure Description
[0017] To more clearly illustrate the specific embodiments of this utility model, the accompanying drawings used in the specific embodiments will be briefly described below. In all the drawings, the elements or parts are not necessarily drawn to scale.
[0018] Figure 1 A schematic diagram of a fiberglass pipe pultrusion molding apparatus provided in an embodiment of this utility model;
[0019] Figure 2 for Figure 1 A schematic cross-sectional view of the fiberglass tube pultrusion molding apparatus shown.
[0020] Figure 3 for Figure 1 A cross-sectional schematic diagram of the fiberglass tube pultrusion molding device from another angle;
[0021] Figure 4 This is a schematic diagram of the polishing components.
[0022] Figure label:
[0023] Base plate 1, first fixed plate 11, first cylinder 2, round block 3, cooling mechanism 4, second fixed plate 12, second cylinder 5, heating mechanism 6, grinding assembly 7, threaded rod 71, rotating ball 72, connecting plate 73, lifting rod 74, grinding roller 75, positioning plate 76, drive assembly 8, drive motor 81, drive gear 82, gear ring 83, transmission assembly 9, transmission plate 91, transmission roller 92, driven roller 93. Detailed Implementation
[0024] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings. These embodiments are merely illustrative of the present invention and should not be construed as limiting the scope of protection of the present invention.
[0025] Please refer to the following: Figures 1-4 This embodiment provides a fiberglass pipe pultrusion molding device, including a base plate 1, a first fixing plate 11, a first cylinder 2, a round block 3, a cooling mechanism 4, a second fixing plate 12, a second cylinder 5, a heating mechanism 6, a grinding assembly 7, a driving assembly 8, and a transmission assembly 9.
[0026] The first fixing plate 11 and the second fixing plate 12 are respectively fixed on the base plate 1. The first cylinder 2 is fixed on the first fixing plate 11. The round block 3 is coaxially fixed inside the first cylinder 2. The cooling mechanism 4 is passed through the first cylinder 2.
[0027] Specifically, the number of the first fixing plate 11 and the second fixing plate 12 can be selected according to the actual situation. The cooling mechanism 4 can be set as an air conditioner or cooling fan or other mechanism capable of cooling down the inside of the first cylinder 2. It should be understood that the first cylinder 2 is provided with a feed inlet and a heating device, etc. After the material is heated, it is fed into the first cylinder 2 through the feed inlet. The inner wall of the first cylinder 2 and the outer wall of the circular block 3 form a cylindrical shape, which moves towards the cooling mechanism 4. After being cooled and fixed by the cooling mechanism 4, it moves towards the second cylinder 5. The specific structure of the heating device, etc., can be referred to the relevant description of fiberglass pultrusion molding in the prior art, and will not be repeated here.
[0028] The second cylinder 5 is rotatably mounted on the second fixed plate 12 and sleeved on the first cylinder 2. The heating mechanism 6 passes through the second cylinder 5. Multiple grinding components 7 are provided and are mutually abutted along the circumference of the second cylinder 5. The grinding components 7 can be raised and lowered and the height position after raising and lowering is limited. The driving component 8 is mounted on the second fixed plate 12 and can drive the second cylinder 5 to rotate. The transmission component 9 is mounted on the base plate 1 and can lead out the fiberglass pipe.
[0029] Specifically, each grinding component 7 is located on the same horizontal plane. Its height-adjustable characteristic allows it to adapt to fiberglass pipes of different diameters. At the same time, adjacent grinding components 7 abut against each other, reducing gaps and allowing for a larger grinding coverage area. The cooled fiberglass pipe is conveyed from the first cylinder 2 to the second cylinder 5, where its surface is reheated by the heating mechanism 6, making the subsequent heating process smoother. The heating mechanism 6 can preferably be a hot air fan or an air heater. The ground fiberglass pipe exits from the other end of the second cylinder 5 and is driven outward by the transmission component 9.
[0030] In this application, by having adjacent grinding components 7 close to each other, the grinding process can cover more of the fiberglass pipe area, thereby reducing the ungrinded area of the fiberglass pipe and making the surface of the fiberglass pipe smoother.
[0031] In addition, the height-adjustable feature of the grinding component 7 allows for adjustment of the height of each grinding component 7 to meet the grinding requirements of different pipe diameters.
[0032] In other embodiments, the grinding assembly 7 includes a threaded rod 71, a rotating ball 72, a connecting plate 73, a lifting rod 74, and a grinding roller 75; the threaded rod 71 is screwed onto the second cylinder 5 and ball-connected to the connecting plate 73 via the rotating ball 72; the connecting plate 73 is vertically and vertically disposed inside the second cylinder 5 via the lifting rod 74; and the grinding roller 75 is disposed on the side of the connecting plate 73 near the axis of the second cylinder 5.
[0033] It should be understood that the axis of the lifting rod 74 and the axis of the threaded rod 71 are coplanar and parallel, and the axial direction of the threaded rod 71 is the radial direction of the cross-section of the second cylinder 5. The threaded rod 71 can be adjusted to accommodate different FRP pipe diameters by raising and lowering it. Specifically, the grinding components 7 that are spaced apart from each other move inward, and the grinding components 7 between the inward-moving grinding components 7 move outward. In other words, the grinding components 7 are divided into two groups, one group moves inward and the other group moves outward, and the two groups are arranged to cross each other. This allows the inward-moving grinding components 7 to adapt to the new pipe diameter, while the outward-moving grinding components 7 leave space for the inward-moving ones.
[0034] In other solutions, a positioning plate 76 is also fixed on the threaded rod 71 at intervals of the grinding component 7. By pre-setting the position of the positioning plate 76 on the threaded rod 71, the threaded rod 71 can directly correspond to the fixed diameter of the fiberglass pipe after it is lowered, thus making the adjustment more convenient.
[0035] In other embodiments, the drive assembly 8 includes a drive motor 81, a drive gear 82, and a gear ring 83; the gear ring 83 is coaxially fixed on the second cylinder 5, the drive motor 81 is fixed on the second fixed plate 12, and the drive gear 82 is coaxially fixed on the output shaft of the drive motor 81 and meshes with the gear ring 83.
[0036] In other embodiments, the transmission assembly 9 includes a transmission plate 91, a transmission roller 92, and a driven roller 93; the transmission plate 91 is fixed on the base plate 1, and the transmission roller 92 and the driven roller 93 are rotatably connected to the transmission plate 91. Specifically, the transmission roller 92 and the driven roller 93 are arranged vertically. Preferably, the transmission roller 92 can be driven to rotate actively by a motor, thereby transmitting the protruding fiberglass pipe.
[0037] The aforementioned fiberglass pipe pultrusion molding device can reduce the blind spot in the grinding process, making its surface smoother.
[0038] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model, and they should all be covered within the scope of the claims and specification of this utility model.
Claims
1. A pultrusion molding apparatus for fiberglass pipes, characterized in that, It includes a base plate, a first fixed plate, a first cylinder, a round block, a cooling mechanism, a second fixed plate, a second cylinder, a heating mechanism, a grinding assembly, a drive assembly, and a transmission assembly; The first fixing plate and the second fixing plate are respectively fixed on the base plate. The first cylinder is fixed on the first fixing plate. The circular block is coaxially fixed inside the first cylinder. The cooling mechanism passes through the first cylinder. The second cylinder is rotatably mounted on the second fixed plate and sleeved on the first cylinder. The heating mechanism passes through the second cylinder. Multiple grinding components are provided and are mutually abutted along the circumference of the second cylinder. The grinding components can be raised and lowered and limit the height position after raising and lowering. The driving component is mounted on the second fixed plate and can drive the second cylinder to rotate. The transmission component is mounted on the base plate and can lead out the fiberglass pipe.
2. The fiberglass pipe pultrusion molding apparatus according to claim 1, characterized in that, The grinding assembly includes a threaded rod, a rotating ball, a connecting plate, a lifting rod, and a grinding roller; the threaded rod is screwed onto the second cylinder and connected to the connecting plate via the rotating ball; the connecting plate is vertically and vertically positioned inside the second cylinder via the lifting rod; and the grinding roller is located on the connecting plate near the axis of the second cylinder.
3. The fiberglass pipe pultrusion molding apparatus according to claim 2, characterized in that, A positioning plate is also fixed on the threaded rod of each of the grinding components at intervals.
4. The fiberglass pipe pultrusion molding apparatus according to claim 3, characterized in that, The drive assembly includes a drive motor, a drive gear, and a gear ring; the gear ring is coaxially fixed on the second cylinder, the drive motor is fixed on the second fixed plate, and the drive gear is coaxially fixed on the output shaft of the drive motor and meshes with the gear ring.
5. The fiberglass pipe pultrusion molding apparatus according to claim 4, characterized in that, The transmission assembly includes a transmission plate, a transmission roller, and a driven roller; the transmission plate is fixed on the base plate, and the transmission roller and the driven roller are rotatably connected to the transmission plate.