Honeycomb core composite panel opening and edge sealing mold and method

Abstract

The present invention relates to a honeycomb core composite panel opening edge sealing mold and method thereof, specifically a honeycomb core composite panel opening edge sealing mold and method thereof; comprising a composite panel forming press plate, a shape retaining plate, a composite panel forming bottom plate, a positioning core block and a positioning seat; the composite panel forming press plate, the shape retaining plate and the composite panel forming bottom plate are used to clamp the panel, the middle honeycomb core and the back plate during the composite panel forming process. The present invention has a simple structure and is easy to use. It can not only seal the openings of the composite material to prevent the formation of glue nodules, but also can cooperate with reserved holes of different apertures within a certain opening range, simplifying the processing flow and tools. By introducing low-temperature foaming glue, a double layer of protection can be formed to prevent glue flow. After the foaming glue is foamed, a first layer of glue barrier is first formed; a second layer of barrier is formed by combining the rounded edge with the round table surface.

Description

Technical Field

[0001] The invention relates to a composite plate forming and processing method, in particular to a honeycomb core composite plate opening and edge sealing mold and a method thereof. Background Art

[0002] At present, the reserved holes for the mooring rings on the panels of honeycomb adhesive joints with mooring rings are of different sizes and are inclined. Using the original mooring ring positioning parts will cause serious glue leakage, making it difficult to unmold. There are too many glue nodules, and the parts are easily scratched when cleaning the nodules, which in turn affects product quality. Summary of the Invention

[0003] The present invention aims to perform edge sealing at the openings during the manufacture of honeycomb composite panels, thereby preventing the formation of lumps at the openings. This allows for a one-step process to simplify the processing of pre-reserved holes, improving processing efficiency and quality. Furthermore, opening holes in honeycomb core panels can disrupt the continuity of the honeycombs, creating pores that require sealing.

[0004] The technical solution of the present invention is to provide a honeycomb core composite panel opening and edge sealing mold, wherein the honeycomb core composite panel comprises a face plate, an intermediate honeycomb core, and a back plate; the honeycomb core composite panel is provided with through holes, and the through hole openings of the face plate form inverted arc flanges;

[0005] The opening edge sealing mold includes a composite board forming press plate, a shape retaining plate, a composite board forming bottom plate, a positioning core block and a positioning seat; the composite board forming press plate, the shape retaining plate and the composite board forming bottom plate are used to clamp the face plate, the middle honeycomb core and the back plate during the composite board forming process;

[0006] The lower cross-section of the positioning seat is anti-rotational, and the upper part is a threaded rod; the positioning core block is a rotating body structure and has a central threaded through hole, which is threadedly engaged with the threaded rod; the outer surface of the positioning core block is divided into two parts, the upper part is a cylindrical surface, and the lower part is a frustum;

[0007] The shape-maintaining plate is provided with an opening corresponding to the through hole of the honeycomb core composite plate, and the composite plate forming bottom plate is provided with a blind groove corresponding to the through hole of the honeycomb core composite plate; the lower part of the positioning seat is matched with the shape of the blind groove; the positioning core block is rotated, and the lower part of the positioning seat is matched with the shape of the blind groove and cannot be rotated, so that the positioning core block is displaced axially along the threaded rod and can be tightly attached to the inverted arc flange, thereby preventing the solidified glue between the panel and the back panel from flowing out.

[0008] Furthermore, foam glue is pasted in the through holes of the honeycomb core, and after the foam glue expands, it forms a closed surface in the through holes of the composite plate, filling the gaps of the honeycomb core in the through holes of the composite plate.

[0009] Furthermore, the expansion temperature of the foaming adhesive is lower than the curing temperature of the curing adhesive.

[0010] Furthermore, the foam adhesive is pasted closer to the back panel than to the front panel.

[0011] Furthermore, the lower portion of the positioning seat is a prism.

[0012] Furthermore, the taper of the frustum is 20° to 80°, preferably 30°.

[0013] The method for sealing the opening and edge of the honeycomb core composite panel of the above-mentioned device comprises the following steps:

[0014] Step 1: Press the shape-keeping plate onto the composite plate forming base plate, rotate the positioning core block and the positioning seat through the thread, and rotate the positioning core block to fit tightly against the lower part of the positioning seat;

[0015] Step 2: Pass the positioning seat through the opening of the conformal plate and insert it into the blind groove to fix it. Apply curing glue to the face plate, honeycomb core and back plate. Press the face plate, honeycomb core and back plate onto the conformal plate in sequence, and insert the positioning core block and the positioning seat into the through holes of the face plate, honeycomb core and back plate.

[0016] Step 3: Rotate the positioning core block so that the positioning core block moves upward, and the frustum surface is tightly attached to the arc flange;

[0017] Step 4: Complete the curing according to the curing process requirements, and remove the composite board forming base plate, shape retaining plate, positioning seat and positioning core block in sequence.

[0018] Furthermore, in step 2, before the positioning core block and the positioning seat are inserted into the through holes of the face plate, the honeycomb core and the back plate, foam glue is pasted in the through holes of the honeycomb core.

[0019] The present invention has the following beneficial effects: It has a simple structure and is easy to use. It can not only seal the edges of composite material openings to prevent the formation of glue bumps, but also accommodate pre-reserved holes of varying diameters within a certain opening range, simplifying the processing process and tooling. By introducing low-temperature foaming adhesive, a double layer of protection is formed to prevent glue flow. After the foaming adhesive is foamed, a first layer of resistance is formed; the second layer of resistance is formed by the chamfered edge and the rounded table surface. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The illustrative examples, together with the preferred mode of use, further objects and description thereof, will be best understood by reference to the following detailed description of examples of the invention when read in conjunction with the accompanying drawings, in which:

[0021] Figure 1 This is a schematic diagram of the assembled embodiment 1 of the present invention;

[0022] Figure 2This is a schematic diagram of embodiment 2 of the present invention after curing;

[0023] Figure 3 This is a partial enlarged view of Example 1 after assembly;

[0024] Figure 4 This is a partial enlarged view of Example 1 after curing;

[0025] Figure 5 This is an inverted view after the positioning core block and the positioning seat are tightened;

[0026] Figure 6 A schematic diagram of positioning the core block;

[0027] Figure 7 is a schematic diagram of a positioning seat;

[0028] Among them, 1-composite board forming press plate, 2-shape retaining plate, 3-composite board forming bottom plate, 4-positioning core block, 5-positioning seat, 6-foaming glue, 7-curing glue. DETAILED DESCRIPTION

[0029] The disclosed examples will be described more fully with reference to the accompanying drawings, in which some (but not all) of the disclosed examples are shown. In fact, many different examples can be described and these examples should not be construed as limited to the examples set forth herein. Instead, these examples are described so that this disclosure will be thorough and complete and will fully convey the scope of the disclosure to those skilled in the art.

[0030] Example 1, see Figure 1 , 3-7, providing a honeycomb core composite panel opening edge sealing mold, the honeycomb core composite panel includes a panel, an intermediate honeycomb core and a back panel; the honeycomb core composite panel has a through hole, and the through hole opening of the panel forms an inverted arc flange;

[0031] The opening edge sealing mold includes a composite board forming press plate, a shape retaining plate, a composite board forming bottom plate, a positioning core block and a positioning seat; the composite board forming press plate, the shape retaining plate and the composite board forming bottom plate are used to clamp the face plate, the middle honeycomb core and the back plate during the composite board forming process;

[0032] The lower cross-section of the positioning seat is anti-rotational, and the upper part is a threaded rod; the positioning core block is a rotating body structure and has a central threaded through hole, which is threadedly engaged with the threaded rod; the outer surface of the positioning core block is divided into two parts, the upper part is a cylindrical surface, and the lower part is a frustum;

[0033] The shape-maintaining plate is provided with an opening corresponding to the through hole of the honeycomb core composite plate, and the composite plate forming bottom plate is provided with a blind groove corresponding to the through hole of the honeycomb core composite plate; the lower part of the positioning seat is matched with the shape of the blind groove; the positioning core block is rotated, and the lower part of the positioning seat is matched with the shape of the blind groove and cannot be rotated, so that the positioning core block is displaced axially along the threaded rod and can be tightly attached to the inverted arc flange, thereby preventing the solidified glue between the panel and the back panel from flowing out.

[0034] The lower part of the positioning seat is a quadrangular prism.

[0035] The taper of the frustum is 30°.

[0036] The method for sealing the opening and edge of the honeycomb core composite panel of the above-mentioned device comprises the following steps:

[0037] Step 1: Press the shape-keeping plate onto the composite plate forming base plate, rotate the positioning core block and the positioning seat through the thread, and rotate the positioning core block to fit tightly against the lower part of the positioning seat;

[0038] Step 2: Pass the positioning seat through the opening of the conformal plate and insert it into the blind groove to fix it. Apply curing glue to the face plate, honeycomb core and back plate. Press the face plate, honeycomb core and back plate onto the conformal plate in sequence, and insert the positioning core block and the positioning seat into the through holes of the face plate, honeycomb core and back plate. Before inserting the positioning core block and the positioning seat into the through holes of the face plate, honeycomb core and back plate, stick foam glue in the through holes of the honeycomb core.

[0039] Step 3: Rotate the positioning core block so that the positioning core block moves upward, and the frustum surface is tightly attached to the arc flange;

[0040] Step 4: Complete the curing according to the curing process requirements, and remove the composite board forming base plate, shape retaining plate, positioning seat and positioning core block in sequence.

[0041] Example 2, see Figure 2 , 5-7, providing a honeycomb core composite panel opening edge sealing mold, the honeycomb core composite panel includes a panel, an intermediate honeycomb core and a back panel; the honeycomb core composite panel has a through hole, and the through hole opening of the panel forms an inverted arc flange;

[0042] The opening edge sealing mold includes a composite board forming press plate, a shape retaining plate, a composite board forming bottom plate, a positioning core block and a positioning seat; the composite board forming press plate, the shape retaining plate and the composite board forming bottom plate are used to clamp the face plate, the middle honeycomb core and the back plate during the composite board forming process;

[0043] The lower cross-section of the positioning seat is anti-rotational, and the upper part is a threaded rod; the positioning core block is a rotating body structure and has a central threaded through hole, which is threadedly engaged with the threaded rod; the outer surface of the positioning core block is divided into two parts, the upper part is a cylindrical surface, and the lower part is a frustum;

[0044] The shape-maintaining plate is provided with an opening corresponding to the through hole of the honeycomb core composite plate, and the composite plate forming bottom plate is provided with a blind groove corresponding to the through hole of the honeycomb core composite plate; the lower part of the positioning seat is matched with the shape of the blind groove; the positioning core block is rotated, and the lower part of the positioning seat is matched with the shape of the blind groove and cannot be rotated, so that the positioning core block is displaced axially along the threaded rod and can be tightly attached to the inverted arc flange, thereby preventing the solidified glue between the panel and the back panel from flowing out.

[0045] The lower part of the positioning seat is a quadrangular prism.

[0046] The taper of the frustum is 30°.

[0047] Step 1: Press the shape-keeping plate onto the composite plate forming base plate, rotate the positioning core block and the positioning seat through the thread, and rotate the positioning core block to fit tightly against the lower part of the positioning seat;

[0048] Step 2: Pass the positioning seat through the opening of the conformal plate and insert it into the blind groove to fix it. Apply curing glue to the face plate, honeycomb core and back plate. Press the face plate, honeycomb core and back plate onto the conformal plate in sequence, and insert the positioning core block and the positioning seat into the through holes of the face plate, honeycomb core and back plate.

[0049] Step 3: Rotate the positioning core block so that the positioning core block moves upward, and the frustum surface is tightly attached to the arc flange;

[0050] Step 4: Complete the curing according to the curing process requirements, and remove the composite board forming base plate, shape retaining plate, positioning seat and positioning core block in sequence.

[0051] Different examples of the systems, apparatuses, and methods disclosed herein include various components, features, and functions. It should be understood that various examples of the systems, apparatuses, and methods disclosed herein may include any of the components, features, and functions of any of the other examples of the systems, apparatuses, and methods disclosed herein in any combination or any subcombination, and all such possibilities are intended to fall within the scope of the present invention.

[0052] The description of various advantageous arrangements has been presented for purposes of illustration and description, but is not intended to be exhaustive or limited to the examples disclosed. Many modifications and variations will be apparent to those skilled in the art. In addition, different advantageous examples may describe different advantages compared to other advantageous examples. The selected example or examples are chosen and described to best illustrate the principles of the examples, their practical application, and to enable those skilled in the art to understand the disclosure with various examples with various modifications suitable for the particular use contemplated.

Claims

1. Honeycomb core composite panel opening and edge sealing mold, characterized by: The honeycomb core composite panel comprises a face plate, an intermediate honeycomb core and a back plate; the honeycomb core composite panel is provided with through holes, and the through hole openings of the face plate form inverted arc flanges; The opening edge sealing mold includes a composite board forming press plate, a shape retaining plate, a composite board forming bottom plate, a positioning core block and a positioning seat; the composite board forming press plate, the shape retaining plate and the composite board forming bottom plate are used to clamp the face plate, the middle honeycomb core and the back plate during the composite board forming process; The lower cross-section of the positioning seat is anti-rotational, and the upper part is a threaded rod; the positioning core block is a rotating body structure and has a central threaded through hole, which is threadedly engaged with the threaded rod; the outer surface of the positioning core block is divided into two parts, the upper part is a cylindrical surface, and the lower part is a frustum; The shape-maintaining plate is provided with an opening corresponding to the through hole of the honeycomb core composite plate, and the composite plate forming bottom plate is provided with a blind groove corresponding to the through hole of the honeycomb core composite plate; the lower part of the positioning seat is matched with the shape of the blind groove; the positioning core block is rotated, and the lower part of the positioning seat is matched with the shape of the blind groove and cannot be rotated, so that the positioning core block is displaced axially along the threaded rod and can be tightly attached to the inverted arc flange, thereby preventing the solidified glue between the panel and the back panel from flowing out.

2. The honeycomb core composite panel opening and edge sealing mold according to claim 1, characterized in that: The cylindrical surface is also pasted with foam glue.

3. The honeycomb core composite panel opening and edge sealing mold according to claim 2, characterized in that: The expansion temperature of the foaming adhesive is lower than the curing temperature of the curing adhesive.

4. The honeycomb core composite panel opening and edge sealing mold according to claim 2, characterized in that: The sticking position of the foam glue is closer to the back plate than the front plate.

5. The honeycomb core composite panel opening and edge sealing mold according to claim 1, characterized in that: The lower part of the positioning seat is a prism.

6. The honeycomb core composite panel opening and edge sealing mold according to claim 5, characterized in that: The lower part of the positioning seat is a rectangular block.

7. A method for sealing the edges of a honeycomb core composite panel using a mold according to any one of claims 1 to 6, comprising the following steps: Step 1: Press the shape-keeping plate onto the composite plate forming base plate, rotate the positioning core block and the positioning seat through the thread, and rotate the positioning core block to fit tightly against the lower part of the positioning seat; Step 2: Pass the positioning seat through the opening of the conformal plate and insert it into the blind groove to fix it. Apply curing glue to the face plate, honeycomb core and back plate. Press the face plate, honeycomb core and back plate onto the conformal plate in sequence, and insert the positioning core block and the positioning seat into the through holes of the face plate, honeycomb core and back plate. Step 3: Rotate the positioning core block so that the positioning core block moves upward, and the frustum surface is tightly attached to the arc flange; Step 4: Complete the curing according to the curing process requirements, and remove the composite board forming base plate, shape retaining plate, positioning seat and positioning core block in sequence.

8. The method for sealing edges of honeycomb core composite panels according to claim 7, wherein: In step 2, before the positioning core block and the positioning seat are inserted into the through holes of the panel, honeycomb core and back panel, foam glue is pasted on the cylindrical surface.

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