Forming method for fiber-wound engine shell end socket and artificial debonding layer

Abstract

The invention provides a forming method for a fiber winding engine shell end socket and an artificial debonding layer, and relates to the technical field of end socket assembly machining and forming. The method comprises the following steps: step 1, respectively pre-pressing and forming a front sealing head and an artificial debonding layer of a raw material sheet; step 2, checking a pre-pressing state, and repairing; thirdly, demolding cloth is cut, and the demolding cloth is laid and attached to the peripheral side of the pre-pressed manual debonding layer; fourthly, the front end socket is bonded to the manual debonding layer, and the demolding cloth is located between the front end socket and the manual debonding layer; and step 5, vulcanizing the front sealing head and the artificial debonding layer in the bonding state. On the whole, the bonding strength between the front sealing head and the manual debonding layer can be improved, the risk of debonding of the manual debonding layer is reduced, and the product quality is improved.

Description

Technical Field

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

[0002] The existing thermal insulation layer forming process mostly adopts the manual laying method, followed by overall molding, that is, the front head and the artificial debonding layer are molded separately, and then bonded as a whole. The bonding performance of the separately molded thermal insulation layer after complete vulcanization is poor, and there is a risk of debonding of the artificial debonding layer. Although it is convenient to manually apply the film on the positive mold of the mold, the amount of glue overflow is difficult to control, the shape is not good, the thickness of each part is uneven, and there are small pores, which leads to defects on the surface of the finished product; the bonding strength of the thermal insulation layer after complete vulcanization is poor, and it is usually chosen to roughen the bonding surface and then apply adhesive, but the effect is still poor, and there is a risk of debonding of the artificial debonding layer 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 purpose of the present invention is to provide a method for forming a fiber-wound engine casing head and an artificial debonding layer, which solves the technical problems of poor surface quality and insufficient bonding strength in the prior art. The preferred technical solutions among the many technical solutions provided by the present invention can produce many technical effects as described below.

[0005] To achieve the above object, 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 and forming the front head and the artificial debonding layer of the raw 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 surrounding side of the pre-pressed artificial debonding layer;

[0010] Step 4. Bonding the front head to the artificial debonding layer, wherein the release cloth is 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 comprises:

[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 comprises:

[0015] A second male mold and a second female mold, 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 one, 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 excess glue 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 an annular attachment area, the upper edge of the annular attachment area is provided with a serrated arc surface overlap area, the annular attachment area is wrapped around the circumferential side of the artificial debonding layer, and the serrated arc surface overlap 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 the vulcanization is completed, the front joint metal connector is bonded to the front end cover.

[0023] Preferably, it also includes:

[0024] A metal bonding area is provided on the front end cover after vulcanization, and the front joint metal connector is bonded to the front end cover 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 demoulding 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 drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. 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 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 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 It 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-bonding glue brushing area. DETAILED DESCRIPTION

[0035] To make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be described in detail below. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other implementation methods obtained by ordinary technicians in this field without creative work belong to 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] The existing thermal insulation layer forming process mostly adopts the manual laying method, followed by overall molding, that is, the front head and the artificial debonding layer are molded separately, and then bonded as a whole. The bonding performance of the separately molded thermal insulation layer after complete vulcanization is poor, and there is a risk of debonding of the artificial debonding layer. Although it is convenient to manually apply the film on the positive mold of the mold, the amount of glue overflow is difficult to control, the shape is not good, the thickness of each part is uneven, and there are small pores, which leads to defects on the surface of the finished product; the bonding strength of the thermal insulation layer after complete vulcanization is poor, and it is usually chosen to roughen the bonding surface and then apply adhesive, but the effect is still poor, and there is a risk of debonding of the artificial debonding layer 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 uncured state, that is, in a raw 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 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 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. On the whole, 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 front head 2 in the raw state is placed between the first male mold 4 and the first female mold 5, and fastened by bolts, and 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 taken out 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, 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 and 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 a 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 demoulding cloth includes an annular attachment area 6, a serrated arc surface overlap area 7 is provided on the upper edge of the annular attachment area 6, the annular attachment area 6 is wrapped around the circumferential side of the artificial debonding layer 3, and the serrated arc surface overlap 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 overlap area 7 includes a plurality of overlap strips, and the plurality of overlap strips are sequentially stacked on the peripheral side of the artificial debonding layer 3 along the circumferential direction to form a serrated overlap surface.

[0054] The serrated arc-shaped overlapping area 7 composed of a plurality of overlapping strips facilitates the overall 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 annular 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 both 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, the front joint metal connector 1 is bonded to the front head 2.

[0059] Further optimization plans also include:

[0060] The metal bonding area 8 is arranged on the vulcanized front head 2 , and the front joint metal connector 1 is bonded to the front head 2 through 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", etc. used herein to indicate the orientation or position relationship is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second", "third", etc. are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0063] In the description of this article, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

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

Claims

1. A method for forming a fiber-wound engine casing head and an artificial debonding layer, It is characterized in that The steps include: Step 1. Pre-pressing the front head (2) and the artificial debonding layer (3) into a raw sheet respectively; Step 2. Check the pre-compression status and make repairs; Step 3. Cut the release cloth and lay the release cloth on the side of the pre-pressed artificial debonding layer (3); Step 4. Bonding the front head (2) to the artificial debonding layer (3), wherein the release cloth is located between the front head (2) and the artificial debonding layer (3); 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, It is 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, It is 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, It is 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, It is 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, It is characterized in that In the step three, the demoulding cloth comprises an annular attachment area (6), the upper edge of the annular attachment area (6) is provided with a serrated arc surface overlap area (7), the annular attachment area (6) is wrapped around the circumferential side of the artificial debonding layer (3), and the serrated arc surface overlap area (7) is laid along the circumferential direction on the circumferential side of the artificial debonding layer (3).

7. The method for forming a fiber-wound engine casing head and an artificial debonding layer according to claim 6, It is characterized in that The sawtooth cambered overlapping area (7) comprises a plurality of overlapping strips, and the plurality of overlapping strips are sequentially stacked on the peripheral side of the artificial debonding layer (3) along the circumferential direction to form a sawtooth overlapping surface.

8. The method for forming a fiber-wound engine casing head and an artificial debonding layer according to claim 6, It is characterized in that In the step 4, 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).

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

10. The method for forming a fiber-wound engine casing head and an artificial debonding layer according to claim 9, It is characterized in that Also includes: A metal bonding area (8), wherein the metal bonding area (8) is arranged on the front head (2) after vulcanization, and the front joint metal connector (1) is bonded to the front head (2) via the metal bonding area (8).

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