Demolding method of large composite product

Abstract

The invention discloses a demolding method for a large composite product. The demolding method comprises the steps that demolding points are selected on a demolding forming tool; during molding, the edge of the composite product extends at the demolding molding tool to form a demolding process area; after the composite material product is cured, a connecting hole is drilled in the preset position of the demolding process area; bolts penetrate through the connecting holes to connect the demolding forming tool and the composite material product. The top end of the jack is arranged at the bottom end of the demolding forming tool. The bottom end of the jack is provided with a mold parting face of a mold. And the jack pressurizes to separate the mold from the composite material product. The jack is directly used for exerting ejection force outside the mold, the mold manufacturing cost is reduced, the demolding position can be adjusted, and a plurality of jacks can be used for being matched with a plurality of tools at the same time. And the mold has the advantages of large demolding force, simple equipment and flexibility in operation.

Description

Technical Field

[0001] The present invention relates to the technical field of spent carbon block sorting, and in particular to a demoulding method for large composite material products. Background Art

[0002] The demoulding method using wedge blocks carries the risk of damaging the mold or part, while building an ejector device on the mold carries the risk of air leakage and leaving traces of the ejector device on the part. Directly fixing the sling to the part for demoulding can easily damage the part. Summary of the Invention

[0003] In order to solve the above-mentioned problems, the present invention provides a demoulding method for large composite material products.

[0004] To achieve the above object, the present invention provides a demoulding method for a large composite material product, comprising selecting a demoulding point on a demoulding molding tool;

[0005] During molding, the edge of the composite material product is extended at the demoulding molding tool to form a demoulding process area;

[0006] After the composite material product is cured, a connection hole is drilled at a predetermined position in the demoulding process area;

[0007] Bolts pass through the connection holes to connect the demoulding tooling and the composite material product;

[0008] The top end of the jack is arranged at the bottom end of the demoulding and forming tooling, and the bottom end of the jack is provided with a parting surface of the mold;

[0009] The jack applies pressure to separate the mold from the composite material product.

[0010] Preferably, the demoulding and forming tooling includes a crossbeam and a connecting plate, the connecting plate is a U-shaped plate, and the crossbeam passes through the U-shaped plate and is fixedly connected to the inner wall of the U-shaped plate.

[0011] Preferably, the depth of the inner groove of the U-shaped plate is greater than the height of the crossbeam.

[0012] Preferably, through holes are provided on both side plates of the U-shaped plate, and the bolts pass through the through holes and the connecting holes to be connected to the composite material product.

[0013] Preferably, the crossbeam is provided with a mounting hole matching the jack, and a pad is provided corresponding to the mounting hole.

[0014] Preferably, the connecting plate is provided with a lifting lug.

[0015] Preferably, a lifting belt of a crane is connected to the lifting lug, and the crane transports the separated demoulding tooling away.

[0016] Preferably, the demoulding process area is a rectangular baffle.

[0017] Preferably, the rectangular baffle of the separated composite material product is cut off and polished flat using an angle grinder.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] The present invention first designs an external tooling at a local position of a large composite material part for manufacturing an extension area of the demoulding process of the composite material part, and uses the tooling to drill a hole to serve as a demoulding hanging point, and the demoulding hanging point is connected to the demoulding tooling. Finally, a jack is placed on the parting surface of the mold, and the purpose of demoulding is achieved by reversely pressurizing the mold and the demoulding tooling. After demoulding, the product is transferred out of the mold by using the hanging point of the demoulding tooling; by using the jack to pressurize the demoulding tooling, the purpose of applying a demoulding force to the product and the mold is achieved, and the ejection mechanism is set outside the parting part, so there is no risk of product leakage, and the extended edge can be cut and removed later without damaging the parting part and leaving no traces on the parting part. After demoulding, the product can be directly transported to the designated location using the tooling, avoiding repeated lifting and saving demoulding time. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A schematic diagram of the extended demoulding process area in the demoulding method for large composite products is produced;

[0021] Figure 2 It is a front view of a demoulding tooling in a demoulding method for large composite products;

[0022] Figure 3 This is a left view of a demoulding tooling in a demoulding method for large composite products;

[0023] Figure 4 Schematic diagram of demoulding method for large composite products. DETAILED DESCRIPTION

[0024] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0025] Reference Figure 1The present invention provides a demoulding method for a large composite material product, comprising:

[0026] Select a demoulding point on the demoulding tooling 3;

[0027] Specifically, a demoulding tool 3 is placed at the selected demoulding point to produce a demoulding process area 4 outside the product. Furthermore, a demoulding area module can be designed on the mold 1 when designing the mold 1.

[0028] During molding, the edge of the composite material product 2 is extended at the demoulding molding tool 3 to form a demoulding process area 4;

[0029] Specifically, a composite material laminate is manufactured in the demoulding process area 4 by laying the composite material and connected to the composite material part. Further, the cloth layer of the composite material part can be extended to the demoulding process area 4 to form a composite material laminate.

[0030] After the composite material product 2 is cured, a connection hole 5 is drilled at a predetermined position in the demoulding process area 4;

[0031] Specifically, after the composite material product 2 is cured, the demoulding process holes are drilled at the drilling holes of the demoulding molding tool 3, and further, the preformed holes on the composite material product can also be used.

[0032] The bolt 10 passes through the connection hole 5 to connect the demoulding tooling 3 and the composite product 2;

[0033] The top of the jack is arranged at the bottom of the demoulding and forming tooling 3, and the bottom of the jack is provided with a parting surface of the mold 1;

[0034] Specifically, a demolding tooling 3 is installed on the demolding process hole; a hydraulic jack is installed on the mold 1 of the composite material part, and the hydraulic jack is installed on the demolding tooling 3. Further, the jack can be installed on the mold 1 bracket or other blank positions of the mold 1 except the molded part.

[0035] The jack applies pressure to separate the mold 1 from the composite product.

[0036] Specifically, a jack is used to pressurize the demoulding tooling 3 and the product to lift up the demoulding tooling 3 together with the product, so as to achieve the purpose of demoulding the product.

[0037] Reference Figure 2-3 The demolding tooling 3 includes a crossbeam 6 and a connecting plate 9. The connecting plate 9 is a U-shaped plate. The crossbeam 6 passes through the U-shaped plate and is fixedly connected to the inner wall of the U-shaped plate. The depth of the groove inside the U-shaped plate is greater than the height of the crossbeam 6. Through holes are formed on both sides of the U-shaped plate. Bolts 10 pass through the through holes and the connecting holes 5 to connect to the composite product 2. The crossbeam 6 is provided with mounting holes 8 that match the jack, and a backing plate 7 is installed at the mounting holes 8. The connecting plate 9 is equipped with lifting ears 12.

[0038] Furthermore, a crossbeam 6 is positioned at the edge of the composite product 2 and may be provided with multiple connecting plates 9. A crane's sling is connected to a lifting lug 12, and the crane removes the separated demolding tooling 3. The demolding process area 4 is a rectangular baffle. An angle grinder is used to cut away the rectangular baffle from the separated composite product 2 and smooth it.

[0039] Reference Figure 4 The steps of the demoulding method of large composite products include:

[0040] Place the demoulding tooling 3 at the selected demoulding point;

[0041] During molding, the edge of the composite material part is extended at the demoulding molding tool 3 to form a demoulding process area 4;

[0042] After the product is solidified, the demoulding tooling connection hole 5 is drilled at the predetermined hole of the demoulding tooling 3;

[0043] The bolts of the shackle 11 are installed into the stripping fixture connection holes 5 , thereby connecting the entire stripping fixture and the composite material part together.

[0044] The jack 14 is installed at the installation hole 8 of the demoulding and molding tool 3; the hydraulic jack 14 is installed on the parting surface of the mold 1 of the composite material part.

[0045] Using the external jack 14 to apply pressure, an opposite force is generated between the mold and the composite product through the shackle 11, separating the demoulding tooling 3 together with the composite product from the mold 1 to achieve the purpose of demoulding the composite product;

[0046] Install the lifting strap on the demoulding tooling lug 10, and use a crane to transport the tooling and the workpiece together;

[0047] Use an angle grinder to cut off the demoulding process area 4 and grind it smooth.

[0048] In this embodiment, the demoulding tooling beam 6, the backing plate 7, the connecting plate 9, and the demoulding tooling lug 12 are welded together to form the demoulding tooling. The shackle 11 is installed on the demoulding tooling 3 using bolts 10 and nuts 13.

[0049] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Those skilled in the art will readily appreciate that various modifications and variations of the present invention are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A method for demoulding a large composite material product, characterized in that: include: Select the demoulding point on the demoulding tooling; During molding, the edge of the composite material product is extended at the demoulding molding tool to form a demoulding process area; After the composite material product is cured, a connection hole is drilled at a predetermined position in the demoulding process area; Bolts pass through the connection holes to connect the demoulding tooling and the composite material product; The top end of the jack is arranged at the bottom end of the demoulding and forming tooling, and the bottom end of the jack is provided with a parting surface of the mold; The jack applies pressure to separate the mold from the composite material product.

2. The demoulding method of a large composite product according to claim 1, characterized in that: The demoulding and forming tooling comprises a crossbeam and a connecting plate, wherein the connecting plate is a U-shaped plate, and the crossbeam passes through the U-shaped plate and is fixedly connected to the inner wall of the U-shaped plate.

3. The demoulding method of a large composite product according to claim 2, characterized in that: The depth of the inner groove of the U-shaped plate is greater than the height of the crossbeam.

4. The demoulding method of a large composite product according to claim 3, characterized in that: Through holes are provided on both side plates of the U-shaped plate, and the bolts pass through the through holes and the connecting holes to be connected with the composite material product.

5. The demoulding method of a large composite product according to claim 4, characterized in that: The crossbeam is provided with a mounting hole matching the jack, and a pad is correspondingly provided at the mounting hole.

6. The demoulding method of a large composite product according to claim 5, characterized in that: The connecting plate is provided with a lifting lug.

7. The demoulding method of a large composite product according to claim 6, characterized in that: The lifting belt of the crane is connected to the lifting lug, and the crane transports the separated demoulding tooling away.

8. The demoulding method of a large composite product according to claim 7, characterized in that: The demoulding process area is a rectangular baffle.

9. The demoulding method of a large composite product according to claim 8, characterized in that: The rectangular baffle of the separated composite material product is cut off and polished to be smooth using an angle grinder.

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