A method for forming a fiber-wound engine casing head and an artificial debonding layer

Abstract

The present invention provides a method for forming a fiber-wound engine casing head and an artificial debonding layer, and relates to the technical field of head assembly processing and forming. The device includes the following steps: Step 1. Pre-pressing the front head and the artificial debonding layer into raw sheets respectively; Step 2. Checking the pre-pressing state and performing repairs; Step 3. Cutting the release cloth and laying the release cloth on the side of the artificial debonding layer that has completed the pre-pressing; Step 4. Bonding the front head to the artificial debonding layer, with the release cloth located between the front head and the artificial debonding layer; Step 5. Vulcanizing the front head and the artificial debonding layer in a bonded state. Overall, the present application can improve the bonding strength between the front head and the artificial debonding layer, reduce the risk of debonding of the artificial debonding layer, and improve product quality.

Description

Technical Field

[0001] The invention relates to the technical field of processing and forming a head assembly, in particular to a method for forming a fiber-wound engine casing head and an artificial debonding layer. Background Art

[0002] Existing insulation layer forming processes mostly use a manual laying method followed by overall molding, meaning the front head and artificial debonding layer are molded separately and then bonded together. The separately molded insulation layer has poor bonding performance after complete vulcanization, and there is a risk of the artificial debonding layer debonding. Manually applying the film to the mold male mold is convenient, but the amount of glue overflow is difficult to control, the shape is poor, and the thickness of each part is uneven, with small pores, resulting in surface defects in the finished product. The insulation layer has poor bonding strength after complete vulcanization, and the bonding surface is usually roughened before applying adhesive, but the effect is still poor, and there is a risk of the artificial debonding layer debonding during subsequent use.

[0003] Therefore, there is an urgent need for a fiber-wound engine casing head and an artificial debonding layer forming method that can improve the bonding strength and quality and reduce the risk of debonding of the artificial debonding layer. Summary of the Invention

[0004] The present invention aims to provide a method for forming a filament-wound engine casing head and an artificial debonding layer, addressing the technical issues of poor surface quality and insufficient bonding strength encountered in the prior art. The various technical benefits achieved by the preferred solution among the various technical solutions provided by the present invention are detailed below.

[0005] To achieve the above objectives, the present invention provides the following technical solutions:

[0006] The present invention provides a method for forming a fiber-wound engine casing head and an artificial debonding layer, comprising the following steps:

[0007] Step 1. Pre-pressing the front head and the artificial debonding layer into a green sheet respectively;

[0008] Step 2. Check the pre-compression status and make repairs;

[0009] Step 3. Cut the release cloth and lay it on the side of the pre-pressed artificial debonding layer;

[0010] Step 4. Bonding the front head to the artificial debonding layer, with the release cloth located between the front head and the artificial debonding layer;

[0011] Step 5. The front head and the artificial debonding layer in a vulcanized bonding state.

[0012] Preferably, the step 1 includes:

[0013] A first male mold and a first female mold are provided, and the front head is placed between the first male mold and the first female mold, and the first male mold and the first female mold are fastened with bolts.

[0014] Preferably, the step 1 includes:

[0015] A second male mold and a second female mold are provided, the artificial debonding layer is placed between the second male mold and the second female mold, and the second male mold and the second female mold are fastened with bolts.

[0016] Preferably, in step 1, the pre-pressing time of the front head and the artificial debonding layer is 6-8 hours respectively.

[0017] Preferably, in the step 2, the pre-pressed front head and the artificial debonding layer are taken out, the glue overflow at the edge is trimmed, the thickness of each part is checked, and the uneven areas are filled or removed.

[0018] Preferably, in step three, the release cloth includes a circumferential attachment area, the upper edge of the circumferential attachment area is provided with a serrated arc surface overlapping area, the circumferential attachment area is wrapped around the circumferential side of the artificial debonding layer, and the serrated arc surface overlapping area is circumferentially laid on the circumferential side of the artificial debonding layer.

[0019] Preferably, the serrated arc surface overlapping area includes a plurality of overlapping strips, and the plurality of overlapping strips are sequentially stacked on the peripheral side of the artificial debonding layer along the circumferential direction to form a serrated overlapping surface.

[0020] Preferably, in the step four, an adhesive brushing area is provided between the front head and the artificial debonding layer, and the adhesive brushing area is located below the circumferential attachment area.

[0021] Preferably, it also includes:

[0022] Step 6. After vulcanization is completed, the front joint metal connector is bonded to the front head.

[0023] Preferably, it also includes:

[0024] A metal bonding area is provided on the vulcanized front head, and the front joint metal connector is bonded to the front head through the metal bonding area.

[0025] In the technical solution provided by the present invention, before the front head and the artificial debonding layer are bonded, they are both in an unvulcanized state, that is, a raw material state. After the pre-pressing is completed, the front head and the artificial debonding layer are repaired and then bonded, that is, bonded in the raw material state, which can greatly improve the bonding strength of the bonding surface of the two and reduce the risk of debonding of the artificial debonding layer. After the front head and the artificial debonding layer are vulcanized through the above process, the flatness of the overall surface can be guaranteed, and the amount of glue overflow in the subsequent vulcanization process can be effectively controlled during the pre-pressing molding process; wherein, the main function of the release cloth is to prevent the front head and the artificial debonding layer from adhering during the vulcanization process. On the whole, the present application can improve the bonding strength between the front head and the artificial debonding layer, reduce the risk of debonding of the artificial debonding layer, and improve product quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0027] Figure 1 It is a schematic diagram of the product of the present invention;

[0028] Figure 2 It is a schematic cross-sectional view of the product of the present invention;

[0029] Figure 3 This is a schematic diagram of the pre-pressed state of the front head of the present invention;

[0030] Figure 4 This is a schematic diagram of the pre-compression state of the artificial debonding layer of the present invention;

[0031] Figure 5 Schematic diagram of the release cloth of the present invention;

[0032] Figure 6 This is a schematic diagram of the bonding state of the front head and the artificial debonding layer of the present invention;

[0033] Figure 7 It is a cross-sectional schematic diagram of the bonding state of the front head and the artificial debonding layer of the present invention.

[0034] In the figure, 1-front joint metal connector; 2-front head; 3-artificial debonding layer; 4-male mold; 5-female mold; 6-circumferential attachment area; 7-serrated arc overlap area; 8-metal bonding area; 9-adhesive brushing area. DETAILED DESCRIPTION

[0035] To make the objectives, technical solutions, and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail below. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other implementations obtained by those of ordinary skill in the art without inventive effort are within the scope of protection of the present invention.

[0036] refer to Figure 1-7 A specific embodiment of the present invention provides a method for forming a fiber-wound engine casing head and an artificial debonding layer, comprising the following steps:

[0037] Step 1. Pre-pressing the front head 2 and the artificial debonding layer 3 into a raw sheet respectively;

[0038] Step 2. Check the pre-compression status and make repairs;

[0039] Step 3. Cut the release cloth and lay it on the 3 sides of the pre-pressed artificial debonding layer;

[0040] Step 4. Bond the front head 2 to the artificial debonding layer 3, with the release cloth located between the front head 2 and the artificial debonding layer 3;

[0041] Step 5. The front head 2 and the artificial debonding layer 3 in a vulcanized bonding state.

[0042] Existing insulation layer forming processes mostly use a manual laying method followed by overall molding, meaning the front head and artificial debonding layer are molded separately and then bonded together. The separately molded insulation layer has poor bonding performance after complete vulcanization, and there is a risk of the artificial debonding layer debonding. Manually applying the film to the mold male mold is convenient, but the amount of glue overflow is difficult to control, the shape is poor, and the thickness of each part is uneven, with small pores, resulting in surface defects in the finished product. The insulation layer has poor bonding strength after complete vulcanization, and the bonding surface is usually roughened before applying adhesive, but the effect is still poor, and there is a risk of the artificial debonding layer debonding during subsequent use. In the present application, before the front head 2 and the artificial debonding layer 3 are bonded, they are both in an unvulcanized state, that is, in a raw material state. After the pre-pressing is completed, the front head 2 and the artificial debonding layer 3 are repaired and then bonded, that is, bonded in a raw material state, which can greatly improve the bonding strength of the bonding surface between the two and reduce the risk of debonding of the artificial debonding layer. After the front head 2 and the artificial debonding layer 3 are vulcanized through the above process, the flatness of the overall surface can be guaranteed, and the amount of glue overflow in the subsequent vulcanization process can be effectively controlled during the pre-pressing molding process; wherein, the main function of the release cloth is to prevent the front head 2 and the artificial debonding layer 3 from adhering during the vulcanization process. Overall, the present application can improve the bonding strength between the front head 2 and the artificial debonding layer 3, reduce the risk of debonding of the artificial debonding layer, and improve product quality.

[0043] To further optimize the solution, step one includes:

[0044] The first male mold 4 and the first female mold 5 are used to place the front head 2 between the first male mold 4 and the first female mold 5, and the first male mold 4 and the first female mold 5 are fastened with bolts.

[0045] The raw front head 2 is placed between the first male mold 4 and the first female mold 5, and fastened with bolts. It is left to stand for a period of time for pre-pressing. After the pre-pressing is completed, the first female mold 5 is pushed out by the screw rod and the front head 2 is removed from the first male mold 4.

[0046] To further optimize the solution, step one includes:

[0047] The second male mold 10 and the second female mold 11 are provided, and the artificial debonding layer 3 is placed between the second male mold 10 and the second female mold 11, and the second male mold 10 and the second female mold 11 are fastened with bolts.

[0048] The artificial debonding layer 3 in the raw state is placed between the second male mold 10 and the second female mold 11, and is fastened by bolts. It is left to stand for a period of time for pre-pressing. After the pre-pressing is completed, the second female mold 11 is pushed out by the screw rod, and the artificial debonding layer 3 is taken out from the second male mold 10.

[0049] To further optimize the solution, in step 1, the pre-pressing time of the front head 2 and the artificial debonding layer 3 is 6-8 hours respectively.

[0050] To further optimize the solution, in step 2, the pre-pressed front head 2 and the artificial debonding layer 3 are taken out, the excess glue on the edge is trimmed, the thickness of each part is checked, and the uneven areas are filled or removed.

[0051] Pre-pressing the front head 2 and the artificial debonding layer 3 separately can effectively control the amount of glue overflow during the vulcanization process. After the pre-pressing is completed, the thickness of each part is checked and the uneven or defective parts can be filled with raw materials in time, which greatly reduces the uneven surface and large defects of the product after vulcanization.

[0052] To further optimize the solution, in step three, the release cloth includes a circumferential attachment area 6, the upper edge of the circumferential attachment area 6 is provided with a serrated arc surface overlapping area 7, the circumferential attachment area 6 is wrapped around the circumferential side of the artificial debonding layer 3, and the serrated arc surface overlapping area 7 is laid circumferentially on the circumferential side of the artificial debonding layer 3.

[0053] According to a further optimized solution, the serrated arc surface overlapping area 7 includes a plurality of overlapping strips, which are sequentially stacked on the peripheral side of the artificial debonding layer 3 along the circumferential direction to form a serrated overlapping surface.

[0054] The serrated arc overlap area 7 composed of several overlap strips facilitates the smooth laying of the demoulding cloth on the surrounding side of the artificial debonding layer 3, effectively isolating the non-adhesive area between the front head 2 and the artificial debonding layer 3 to ensure product quality.

[0055] To further optimize the solution, in step four, an adhesive brushing area 9 is provided between the front head 2 and the artificial debonding layer 3 , and the adhesive brushing area 9 is located below the circumferential attachment area 6 .

[0056] After the release cloth is laid, apply adhesive to the adhesive brushing area 9, and then bond the front head 2 to the artificial debonding layer 3; wherein, the adhesive brushing area 9 can be set on the front head 2, or on the artificial debonding layer 3, or on the front head 2 and the artificial debonding layer 3 at the same time, as long as it does not affect the bonding strength.

[0057] Further optimization plans also include:

[0058] Step 6. After vulcanization is completed, bond the front joint metal connector 1 to the front head 2.

[0059] Further optimization plans also include:

[0060] The metal bonding area 8 is provided on the vulcanized front head 2 , and the front joint metal connector 1 is bonded to the front head 2 via the metal bonding area 8 .

[0061] After vulcanization is completed, adhesive is applied to the metal bonding area 8 to bond the metal connector 1 to the front head 2 .

[0062] It should be noted that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like used herein to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are intended only to facilitate the description of this application and to simplify the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as limiting this application. In addition, the terms "first", "second", "third", etc. are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0063] It should also be noted that, unless otherwise specified or limited, the terms "mounted," "connected," and "connected" should be understood broadly. For example, they can refer to fixed, detachable, or integral connections; mechanical or electrical connections; and direct or indirect connections through an intermediary. Those skilled in the art will understand the specific meanings of these terms in this application based on the specific circumstances.

[0064] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any modifications or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection of the claims.

Claims

1. A method for forming a fiber-wound engine casing head and an artificial debonding layer, characterized in that: The steps include: Step 1. Pre-pressing the front head (2) and the artificial debonding layer (3) into a raw sheet; Step 2. Check the pre-compression status and make repairs; Step 3. Cut the release cloth and lay the release cloth on the circumferential side of the pre-pressed artificial debonding layer (3), the release cloth includes a circumferential attachment area (6), the upper edge of the circumferential attachment area (6) is provided with a serrated arc surface overlap area (7), the circumferential attachment area (6) is wrapped around the circumferential side of the artificial debonding layer (3), the serrated arc surface overlap area (7) is laid circumferentially on the circumferential side of the artificial debonding layer (3), the serrated arc surface overlap area (7) includes a plurality of overlap strips, and the plurality of overlap strips are sequentially stacked along the circumferential direction on the circumferential side of the artificial debonding layer (3) to form a serrated overlap surface; Step 4. The front head (2) is bonded to the artificial debonding layer (3), the release cloth is located between the front head (2) and the artificial debonding layer (3), an adhesive brushing area (9) is provided between the front head (2) and the artificial debonding layer (3), and the adhesive brushing area (9) is located below the circumferential attachment area (6); Step 5. The front head (2) and the artificial debonding layer (3) in a vulcanized bonding state.

2. The method for forming a fiber-wound engine casing head and an artificial debonding layer according to claim 1, characterized in that: The step one comprises: A first male mold (4) and a first female mold (5), the front head (2) is placed between the first male mold (4) and the first female mold (5), and the first male mold (4) and the first female mold (5) are fastened with bolts.

3. The method for forming a fiber-wound engine casing head and an artificial debonding layer according to claim 1, characterized in that: The step one comprises: A second male mold (10) and a second female mold (11), the artificial debonding layer (3) is placed between the second male mold (10) and the second female mold (11), and the second male mold (10) and the second female mold (11) are fastened with bolts.

4. The method for forming a fiber-wound engine casing head and an artificial debonding layer according to claim 1, characterized in that: In the step 1, the pre-pressing time of the front head (2) and the artificial debonding layer (3) is 6-8 hours respectively.

5. The method for forming a fiber-wound engine casing head and an artificial debonding layer according to claim 1, characterized in that: In the second step, the pre-pressed front head (2) and the artificial debonding layer (3) are taken out, the glue overflow at the edge is trimmed, the thickness of each part is checked, and the uneven areas are filled or removed.

6. The method for forming a fiber-wound engine casing head and an artificial debonding layer according to claim 1, characterized in that: Also includes: Step 6. After vulcanization is completed, the front joint metal connector (1) is bonded to the front head (2).

7. The method for forming a fiber-wound engine casing head and an artificial debonding layer according to claim 6, characterized in that: Also includes: A metal bonding area (8), wherein the metal bonding area (8) is provided on the vulcanized front head (2), and the front joint metal connector (1) is bonded to the front head (2) via the metal bonding area (8).

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