Square composite material barrel curing and pressurizing device and method

Abstract

The invention discloses a curing and pressurizing device and method for a square composite material barrel. A feasible and efficient solution is provided for curing and pressurizing of the square composite material barrel. The first pressing plate, the second pressing plate and the two plane pressing plates are used for curing and pressurizing the periphery of the square composite material barrel, the problem that four faces of the square composite material barrel protrude outwards when curing is carried out in a cloth bag winding pressurizing mode is effectively solved, the product quality is remarkably improved, and the device is suitable for large-scale application and popularization in the industry.

Description

Technical Field

[0001] The invention belongs to the field of composite material structure manufacturing, and particularly relates to a square composite material tube curing pressurizing device and method. Background Art

[0002] Resin-based composite products need to be fully pressurized during the curing process. Existing curing pressurization technologies mainly include gas pressurization, wrapping bag pressurization, rigid plate pressurization, etc. Among them, gas pressurization is generally carried out in an autoclave, and there are no special requirements for the shape of the product, but it is only suitable for dry-wound products; wrapping bag pressurization and rigid plate pressurization are suitable for wet-wound products. In actual applications, wrapping bag pressurization is generally suitable for centrally symmetrical products, and rigid plate pressurization is often used for laminate pressurization.

[0003] When curing a square composite tube with a square cross section by wrapping a cloth bag and applying pressure, it was found that all four sides of the square composite tube were convex. The reason is that for products with a square cross section, the force applied by the cloth bag wrapped on any side is a plate beam fixed on two edges, and it is a flexible plate beam. In this way, the air pressure generated by the volatilization of the composite material during the curing process acts on the above-mentioned flexible cloth bag plate beam, forming an outward deflection and presenting a convex phenomenon. In summary, the existing wrapping cloth bag pressurization method is not suitable for curing and pressurizing square composite tubes, and new solutions need to be explored. Summary of the invention

[0004] The object of the present invention is to provide a square composite material tube curing pressurization device and method, so as to solve the problem that the prior art is not suitable for pressurizing and curing square composite material tubes.

[0005] In order to solve the above technical problems, the present invention adopts the following technical solutions to achieve the above problems:

[0006] A square composite material tube curing and pressurizing device, comprising a winding mandrel, on which a square composite material tube is arranged, characterized in that: both left and right sides of the winding mandrel are provided with flat pressing plates of matching shapes;

[0007] The winding core mold is provided with a first pressing plate and a second pressing plate in an upper and lower spliced ​​manner on the outside; the first pressing plate is a "Π"-shaped structure, including a panel and two wall panels; the first pressing plate and the second pressing plate have the same shape;

[0008] A plurality of vertical threaded holes are provided on both sides of the panel of the first pressing plate along the length direction, and through holes corresponding to the threaded holes of the first pressing plate are provided on the panel of the second pressing plate; the first pressing plate and the second pressing plate can be detachably connected through their own threaded holes and through holes using corresponding fastening screws;

[0009] The wall plates of the first pressing plate and the second pressing plate are both provided with a plurality of evenly distributed screw holes, and the wall plates of the first pressing plate and the second pressing plate can be pressed onto the square composite material cylinder by using corresponding clamping screws through their own screw holes.

[0010] A square composite material tube curing and pressurizing method, based on the square composite material tube curing and pressurizing device, comprises the following steps:

[0011] Step 1, place the second pressing plate with the notch facing upward, and place the winding core mold and two flat pressing plates into the notch of the second pressing plate;

[0012] Step 2, the first pressing plate is placed with the notch facing downward and assembled on the upper half of the winding core mold;

[0013] Step 3, insert four fastening screws into the screw holes at the four corners of the first pressing plate respectively, and screw them into the corresponding positions of the second pressing plate;

[0014] Step 4: Install all other fastening screws in sequence without applying any torque during installation;

[0015] Step 5: tighten all the fastening screws step by step; or tighten all the fastening screws from both ends to the middle;

[0016] Step 6: Install all the clamping screws without applying any torque during installation;

[0017] Step 7, tighten all the clamping screws step by step, or tighten all the clamping screws in sequence from both ends to the middle, to complete the curing and pressurization of the square composite material cylinder.

[0018] Furthermore, in step 5, when tightening the fastening screws, the position of the flat pressure plate is adjusted synchronously so that the flat pressure plate always remains vertical.

[0019] Compared with the prior art, the present invention has the following technical effects:

[0020] The square composite material tube curing pressurization device and method of the present invention provide a feasible and efficient solution for curing and pressurizing the square composite material tube. The first pressing plate, the second pressing plate and two flat pressing plates are used to cure and pressurize the four sides of the square composite material tube. This arrangement effectively avoids the convexity problem of the four sides of the square composite material tube when curing by wrapping the cloth bag pressurization method, significantly improves the product quality, and is suitable for large-scale use and promotion in industry. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the square composite material cylinder curing and pressurizing device of the present invention;

[0022] Figure 2It is a schematic diagram of the connection structure between the winding core mold and the square composite material tube in the present invention;

[0023] Figure 3 It is a schematic diagram of the first pressing plate structure in the present invention;

[0024] Figure 4 It is a schematic diagram of the flat pressing plate structure in the present invention;

[0025] Figure 5 It is a partially enlarged view of the square composite material tube curing pressurizing device of the present invention.

[0026] The meanings of the numbers in the figure are: 1. winding core mold; 2. flat pressure plate; 3. first pressure plate; 4. second pressure plate; 5. panel; 6. wall panel; 7. fastening screw; 8. clamping screw. DETAILED DESCRIPTION

[0027] It should be noted that, unless otherwise specified, all components in the present invention are components known in the prior art. For example, the winding mandrel is a known and commonly used winding mandrel.

[0028] Specific embodiments of the present invention are given below. It should be noted that the present invention is not limited to the following specific embodiments, and all equivalent changes made on the basis of the technical solution of this application fall within the protection scope of the present invention.

[0029] like Figure 1-5 As shown, a square composite material tube curing and pressurizing device comprises a winding mandrel 1, on which a square composite material tube is arranged; both left and right sides of the winding mandrel 1 are provided with flat pressing plates 2 of matching shapes;

[0030] The winding core mold 1 is provided with a first pressing plate 3 and a second pressing plate 4 in an upper and lower assembled manner; the first pressing plate 3 includes a panel 5 and two wall panels 6, forming a "Π"-shaped structure, and the first pressing plate 3 and the second pressing plate 4 have the same shape;

[0031] A plurality of vertical threaded holes are provided on both sides of the panel 5 of the first pressing plate 3 along the length direction, and through holes corresponding to the threaded holes of the first pressing plate 3 are provided on the panel 5 of the second pressing plate 4; the first pressing plate 3 and the second pressing plate 4 can be screwed together through their own threaded holes and through holes using corresponding fastening screws 7;

[0032] The wall plates 6 of the first pressing plate 3 and the second pressing plate 4 are both provided with a plurality of evenly distributed screw holes, and the wall plates 6 of the first pressing plate 3 and the second pressing plate 4 can be pressed tightly against the square composite material cylinder using the corresponding clamping screws 8 through their own screw holes.

[0033] The two flat pressing plates 2 are arranged on the two corresponding side surfaces of the wound square composite product, and the first pressing plate 3 and the second pressing plate 4 are arranged on the other two corresponding surfaces of the wound square composite product. The first pressing plate 3 and the second pressing plate 4 are outside the two flat pressing plates 2. The first pressing plate 3 and the second pressing plate 4 are fastened and pressed on the corresponding surfaces of the composite product by a plurality of fastening screws 7, and the two flat pressing plates 2 are pressed on the corresponding surfaces of the composite product by a plurality of pressing screws 8.

[0034] A square composite material tube curing and pressurizing method, based on the square composite material tube curing and pressurizing device, comprises the following steps:

[0035] Step 1, place the second pressing plate 4 with the notch facing upward, and place the winding core mold 1 and two flat pressing plates 2 into the notch of the second pressing plate 4;

[0036] Step 2, the first pressing plate 3 is placed with the notch facing downward and assembled on the upper half of the winding core mold 1;

[0037] Step 3, insert four fastening screws 7 into the screw holes at the four corners of the first pressing plate 3 respectively, and screw them into the corresponding positions of the second pressing plate 4;

[0038] Step 4, install all the remaining fastening screws 7 in sequence without applying any torque during installation;

[0039] Step 5, tighten all the fastening screws 7 step by step; or tighten all the fastening screws 7 in sequence from both ends to the middle;

[0040] Step 6, install all the clamping screws 8 without applying any torque during installation;

[0041] Step 7, tighten all the clamping screws 8 step by step; or tighten all the clamping screws 8 in sequence from both ends to the middle; complete the curing and pressurization of the square composite material cylinder.

[0042] Among them, the step-by-step tightening method can ensure that the tightening torque of the corresponding screws is not applied in one go, but is applied step by step; the method of tightening in sequence from both ends to the middle can apply the tightening force symmetrically. Both methods can enhance stability and further ensure the quality of the final product.

[0043] As a preferred solution, in step 5, when tightening the fastening screws 7, the position of the flat plate 2 is adjusted synchronously to keep the flat plate 2 vertical. When applying torque, adjusting the posture of the flat plate 2 can prevent it from tilting and being stressed, further ensuring the quality of the final product.

Claims

1. A square composite material tube curing and pressurizing device, comprising a winding mandrel (1), wherein the winding mandrel (1) is provided with a square composite material tube, characterized in that; The left and right sides of the winding core mold (1) are both provided with flat pressing plates (2) of matching shapes; The winding core mold (1) is provided with a first pressing plate (3) and a second pressing plate (4) in an upper and lower assembled manner on the outside; the first pressing plate (3) is a "Π"-shaped structure, comprising a panel (5) and two wall panels (6); the first pressing plate (3) and the second pressing plate (4) are of the same shape; A plurality of vertical threaded holes are provided on both sides of the panel (5) of the first pressing plate (3) along the length direction, and through holes corresponding to the threaded holes of the first pressing plate (3) are provided on the panel (5) of the second pressing plate (4); the first pressing plate (3) and the second pressing plate (4) can be detachably connected through their own threaded holes and through holes using corresponding fastening screws (7); The wall plates (6) of the first pressing plate (3) and the second pressing plate (4) are both provided with a plurality of evenly distributed screw holes, and the wall plates (6) of the first pressing plate (3) and the second pressing plate (4) can be pressed against the square composite material cylinder by corresponding clamping screws (8) through their own screw holes.

2. A square composite material tube curing and pressurizing method, the method is based on the square composite material tube curing and pressurizing device according to claim 1, characterized in that: The following steps are involved: Step 1, placing the second pressing plate (4) with the notch facing upward, and placing the winding core mold (1) and two flat pressing plates (2) into the notch of the second pressing plate (4); Step 2, the first pressing plate (3) is placed with the notch facing downward and assembled on the upper half of the winding core mold (1); Step 3, insert four fastening screws (7) into the screw holes at the four corners of the first pressing plate (3) respectively, and screw them into the corresponding positions of the second pressing plate (4); Step 4, install all other fastening screws (7) in sequence without applying any torque during installation; Step 5, tighten all the fastening screws (7) step by step; or tighten all the fastening screws (7) in sequence from both ends to the middle; Step 6, install all the clamping screws (8) without applying any torque during installation; Step 7, tighten all the clamping screws (8) step by step, or tighten all the clamping screws (8) in sequence from both ends to the middle, to complete the curing and pressurization of the square composite material cylinder.

3. The method for curing and pressurizing a square composite material tube as claimed in claim 2, characterized in that: In step 5, when tightening the fastening screw (7), the position of the flat pressing plate (2) is adjusted synchronously so that the flat pressing plate (2) always remains vertical.

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