Glue injection box matched with pultrusion process and suitable for production of super-thick-wall composite pipe

Abstract

The utility model relates to a glue injection box matched with a pultrusion process and applicable to production of super-thick-wall composite pipes, which belongs to the technical field of pultrusion of composite pipes and comprises an upper die, a lower die and a core die, the upper die is detachably mounted at the upper end of the lower die, an upper groove is arranged on the lower surface of the upper die, a lower groove is arranged on the upper surface of the lower die, and the upper groove and the lower groove jointly enclose to form a cavity. The core mold is arranged in the cavity and penetrates through the two ends of the cavity, a glue injection cavity is defined between the core mold and the cavity, the upper mold is provided with a first glue injection hole communicated with the glue injection cavity, a glue injection runner penetrating through the two ends of the core mold is arranged in the core mold, and a second glue injection hole communicated with the glue injection runner and the glue injection cavity is formed in the core mold. The device has the advantages that the structural design is reasonable, raw materials can be saved, waste can be reduced, the glue injection speed and the pultrusion production speed can be more effectively controlled, the production efficiency is improved, the infiltration effect of resin on fibers is improved, section cracks are reduced, and volatilization of pungent smells is greatly reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of composite material pipe drawing, especially to a drawing process matched glue injection box suitable for super-thick wall composite pipe production. BACKGROUND

[0002] Drawing forming refers to a method that glass fiber roving or its fabric is dipped, extruded, heated and solidified under external traction, and cut to length, to continuously produce glass steel linear products. In the dipping process, the traditional technology is to use straight slot dipping method or roller dipping method, among which the straight slot dipping method is most commonly used. In the whole dipping process, it is necessary to ensure that the fiber and felt are arranged very neatly. The pre-dipped reinforcing material passes through the preforming device for subsequent processing. However, this dipping method has the following defects:

[0003] 1) The design and use of the resin tank will cause serious waste of resin, and the investment of manpower and material resources in this link is also large;

[0004] 2) The glue injection speed is uncontrollable, which may have adverse factors on the subsequent drawing production speed and product production efficiency;

[0005] 3) When producing thick-walled profiles, the cross section often has many cracks, which affects the quality of the products and the later production and use;

[0006] 4) The design of the resin tank will cause the volatilization of a large amount of irritating odor.

[0007] Therefore, it is necessary to develop a drawing process matched glue injection box suitable for super-thick wall composite pipe production to overcome the above technical problems. CONTENT OF THE UTILITY MODEL

[0008] The utility model solves the technical problem of providing a drawing process matched glue injection box suitable for super-thick wall composite pipe production, which effectively overcomes the defects of the prior art.

[0009] The technical solution of the utility model to solve the above technical problems is as follows:

[0010] A drawing process matched glue injection box suitable for super-thick wall composite pipe production, comprising an upper mold, a lower mold and a core mold, the upper mold is detachably mounted on the upper end of the lower mold, the lower surface of the upper mold is provided with an upper mold cavity, the upper surface of the lower mold is provided with a lower mold cavity, the upper mold cavity and the lower mold cavity jointly form a mold cavity, the core mold is placed in the mold cavity and penetrates both ends of the mold cavity, the core mold and the mold cavity define a glue injection cavity, the upper mold is provided with a first glue injection hole communicating with the glue injection cavity, the core mold is provided with a glue injection runner penetrating both ends thereof, and the core mold is provided with a second glue injection hole communicating the glue injection runner and the glue injection cavity.

[0011] On the basis of the above technical scheme, the utility model further can make improvement as follows.

[0012] Further, the cross-sectional area of the cavity gradually decreases from the middle to the two ends.

[0013] Further, the cavity comprises a cylindrical section at the middle section and a conical section connected to the two ends of the cylindrical section, and the core mold is a cylindrical member coaxially distributed with the cavity.

[0014] Further, the core mold is coaxially provided with the glue injection runner inside.

[0015] Further, the upper mold and the lower mold are both cuboid block members.

[0016] Further, the upper mold and the lower mold are symmetrically distributed, and the fitting surfaces of the two divide the cavity into two parts.

[0017] Further, the first glue injection hole is located at the position of the largest cross-sectional area of the cavity.

[0018] Further, the first glue injection hole is a vertical through hole, and the second glue injection hole is located below the first glue injection hole.

[0019] Further, the two sides of the upper mold and the lower mold are assembled through bolt connection respectively.

[0020] Further, the two sides of one end of the upper mold and the two sides of one end of the lower mold are respectively provided with process assembly notches.

[0021] The utility model has the advantages of reasonable structure design, saving of raw materials, reduction of waste, more effective control of glue injection speed and pultrusion production speed, improvement of production efficiency, improvement of resin infiltration effect on fibers, reduction of cross-sectional crack generation, and significant reduction of irritating odor volatilization. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 It is a structure schematic view of the glue injection box matched with the pultrusion process for the production of the super-thick-wall composite pipe material of the utility model;

[0023] Figure 2 It is a longitudinal sectional view of the glue injection box matched with the pultrusion process for the production of the super-thick-wall composite pipe material of the utility model;

[0024] Figure 3 It is a transverse sectional view of the glue injection box matched with the pultrusion process for the production of the super-thick-wall composite pipe material of the utility model.

[0025] In the drawings, the component list represented by each number is as follows:

[0026] 1. Upper mold; 2. Lower mold; 3. Core mold; 4. Injection cavity; 11. First injection hole; 31. Injection channel; 32. Second injection hole. Detailed Implementation

[0027] The principles and features of this utility model are described below with reference to the accompanying drawings. The examples given are only for explaining this utility model and are not intended to limit the scope of this utility model.

[0028] Example

[0029] like Figure 1 , 2 As shown in Figure 3, the pultrusion process injection box for ultra-thick-walled composite pipe production in this embodiment includes an upper mold 1, a lower mold 2, and a core mold 3. The upper mold 1 is detachably mounted on the upper end of the lower mold 2. The lower surface of the upper mold 1 is provided with an upper groove, and the upper surface of the lower mold 2 is provided with a lower groove. The upper groove and the lower groove together enclose a cavity. The core mold 3 is placed in the cavity and penetrates both ends of the cavity. An injection cavity 4 is defined between the core mold 3 and the cavity. The upper mold 1 is provided with a first injection hole 11 that communicates with the injection cavity 4. The core mold 3 is provided with an injection channel 31 that penetrates both ends of the core mold. The core mold 3 is provided with a second injection hole 32 that connects the injection channel 31 and the injection cavity 4.

[0030] In this embodiment, the pultrusion process injection box for the production of ultra-thick-walled composite pipes is positioned between the preforming mold and the forming mold in a conventional pultrusion process (eliminating the resin tank upstream of the traditional preforming mold). One end of the injection box is connected to the forming mold, one end of the core mold 3 is connected to the corresponding internal component of the forming mold, and the other end of the injection box is connected to a support. Simultaneously, the other end of the core mold 3 is assembled with the support, ensuring a stable relative position between the core mold 3 and the upper mold 1 and lower mold 2, stabilizing the internal cavity and the injection cavity 4. After exiting the preforming mold, the fiber filaments (or fiber woven mesh) enter the injection cavity 4 from the other end of the core mold 3 and then enter the forming mold from one end of the core mold 3. During this process, resin is injected into the injection channel 31 through the other end of the core mold 3, while simultaneously, resin is injected into the injection cavity 4 through the first injection hole 11 of the upper mold 1, forming a colloidal impregnation of the fiber material passing through the injection cavity 4. Overall, it has the following technical effects:

[0031] 1) The resin impregnation of the fibers within the limited space inside the dispensing box can effectively save raw materials and reduce waste;

[0032] 2) The resin enters the relatively sealed dispensing box through two opposing holes, effectively reducing the volatilization of irritating odors;

[0033] 3) During the glue injection process, the glue injection speed and pultrusion production speed can be more effectively controlled by controlling the glue injection of the first glue injection hole 11 and the second glue injection hole 32, thereby improving the production efficiency of the product and greatly reducing adverse factors.

[0034] 4) The design of the inner and outer glue injection cavity is ingenious, which can effectively make the fiber material "saturated" infiltration, and has a significant effect on reducing the cross-sectional crack problem encountered in the production of thick-walled pipe.

[0035] In this embodiment, the cross-sectional area of the cavity gradually decreases from the middle to the two ends. The overall shape is large in the middle and small at both ends, so that the glue can effectively fill the glue injection cavity 4, and the effect of resin infiltrating the fiber is improved.

[0036] In this embodiment, the cavity includes a cylindrical section at the middle section and a conical section connected to both ends of the cylindrical section, and the core mold 3 is a cylindrical member coaxially distributed with the cavity. The cavity structure is regular, and the overall shape is "drum-shaped", and the resin is more evenly distributed.

[0037] In this embodiment, the core mold 3 is coaxially provided with a glue injection channel 31 inside.

[0038] In this embodiment, the upper mold 1 and the lower mold 2 are both rectangular block-shaped members. The appearance is simple and beautiful, and it is easy to assemble.

[0039] In this embodiment, the upper mold 1 and the lower mold 2 are symmetrically distributed, and the fitting surface of the two divides the cavity into two.

[0040] In this embodiment, the first glue injection hole 11 is located at the position where the cross-sectional area of the cavity is the largest. After injecting the resin, it flows and disperses uniformly from the largest cross section to both ends, and the resin can uniformly fill the glue injection cavity 4, and the infiltration effect is good.

[0041] In this embodiment, the first glue injection hole 11 is a vertical through hole, and the second glue injection hole 32 is located below the first glue injection hole 11, so that the inner and outer glue injection flows and diffuses from the middle to both ends of the glue injection cavity 4, and the infiltration effect is better.

[0042] As a preferred embodiment, the two sides of the upper mold 1 and the lower mold 2 are respectively connected and assembled by bolts.

[0043] In the above embodiment, a plurality of first screw holes vertically penetrating the upper mold 1 are provided between the two ends of the upper mold 1, and a plurality of second screw holes corresponding to the first screw holes are provided on the two sides of the lower mold 2. The first screw hole is screwed with the second screw hole through the bolt, so as to realize the close assembly between the upper mold 1 and the lower mold 2.

[0044] In actual use, a positioning groove or a protrusion can be provided on the upper surface of the lower mold 2, and a matching positioning block or a fitting groove can be provided on the lower surface of the upper mold 1, so as to realize the quick positioning and assembly of the upper mold 1 and the lower mold 2.

[0045] As a preferred embodiment, the two sides of one end of the upper mold 1 and the two sides of one end of the lower mold 2 are respectively provided with process assembly notches.

[0046] In the above embodiment, the process assembly notch (indicated by A in the figure) is generally arranged at the two side edges of one end of the upper die 1 and the lower die 2, which facilitates the placement of the pre-installed bolts distributed transversely through the one end of the upper die 1 and the lower die 2, and the assembly of the end surface of the forming die through the pre-installed bolts, mainly playing the role of facilitating the disassembly of the pre-installed bolts.

[0047] In the description of the present application, it should be understood that the orientations or positional relationships indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0048] In addition, the terms "first" and "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first" and "second" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise specifically limited.

[0049] In the present application, unless otherwise specifically defined and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication or interaction relationship between two elements, unless otherwise specifically limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0050] In the present application, unless otherwise specifically defined and limited, the first feature "on" or "under" the second feature can be direct contact between the first and second features, or indirect contact between the first and second features through an intermediate medium. Moreover, the first feature "above", "above" and "above" the second feature can be directly above or obliquely above the first feature, or only indicate that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature can be directly below or obliquely below the first feature, or only indicate that the horizontal height of the first feature is lower than that of the second feature.

[0051] In the description of the present specification, the description referring to the terms "one embodiment", "some embodiments", "an example", "a specific example", or "some examples" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any appropriate manner in any one or more embodiments or examples. Furthermore, the person skilled in the art can combine and combine the different embodiments or examples described in the present specification and the features of the different embodiments or examples, without contradiction.

[0052] Although the embodiments of the present application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present application, and the person skilled in the art can make changes, modifications, replacements and modifications to the above embodiments within the scope of the present application.

Claims

1. A matched resin injection box suitable for pultrusion process of super-thick wall composite pipe, characterized in that: The mould comprises an upper mould (1), a lower mould (2) and a core mould (3), the upper mould (1) is detachably mounted on the upper end of the lower mould (2), the lower surface of the upper mould (1) is provided with an upper cavity, the upper surface of the lower mould (2) is provided with a lower cavity, the upper cavity and the lower cavity jointly enclose a cavity, the core mould (3) is placed in the cavity and penetrates the two ends of the cavity, the core mould (3) and the cavity define a glue injection cavity (4) between them, the upper mould (1) is provided with a first glue injection hole (11) penetrating the glue injection cavity (4), the core mould (3) is provided with a glue injection runner (31) penetrating the two ends thereof, and the core mould (3) is provided with a second glue injection hole (32) connecting the glue injection runner (31) and the glue injection cavity (4).

2. The matched resin injection box for pultrusion process of the super-thick wall composite pipe according to claim 1, characterized in that: The cross-sectional area of the cavity gradually decreases from the middle to the two ends.

3. The matched resin injection box for pultrusion process of the super-thick wall composite pipe according to claim 2, characterized in that: The cavity comprises a cylindrical section at the middle section and a frustum section connected to the two ends of the cylindrical section, and the core mould (3) is a cylindrical member coaxially distributed with the cavity.

4. The matched resin injection box for pultrusion process of the super-thick wall composite pipe according to claim 3, characterized in that: The core mould (3) is coaxially provided with the glue injection runner (31) inside.

5. The matched resin injection box for pultrusion process of the present application for producing super-thick wall composite pipe, characterized in that: The upper mould (1) and the lower mould (2) are both cuboid block members.

6. The matched resin injection box for pultrusion process of the present application for producing super-thick wall composite pipe, characterized in that: The upper mould (1) and the lower mould (2) are symmetrically distributed, and the fitting surface of the two divides the cavity into two parts.

7. A matched resin injection box for pultrusion process suitable for the production of super-thick-walled composite pipes according to any one of claims 2 to 6, characterized in that: The first glue injection hole (11) is located at the position of the largest cross-sectional area of the cavity.

8. The matched resin injection box for pultrusion process of producing super-thick wall composite pipe according to claim 7, characterized in that: The first glue injection hole (11) is a vertical through hole, and the second glue injection hole (32) is located below the first glue injection hole (11).

9. A matched resin injection box for pultrusion process suitable for the production of super-thick-walled composite pipes according to any one of claims 1 to 6, characterized in that: The two sides of the upper mould (1) and the lower mould (2) are respectively connected and assembled by bolts.

10. A matched resin injection box for a pultrusion process suitable for the production of an ultra-thick-walled composite pipe according to any one of claims 1 to 6, characterized in that: The two sides of one end of the upper mould (1) and the two sides of one end of the lower mould (2) are respectively provided with process assembly notches.

Images