CN205522559U - Split type mould of technology is pressed to vacuum bag - Google Patents

Abstract

A vacuum bag pressure split mold, including two parts, the left and right parts are fixed by bolts and film, and it is characterized in that: the surface of the left and right parts is provided with grooves across the parting surface, and the grooves are filled with atoms Ash, the surface of atomic ash and the surface of the left and right parts have a smooth transition. The utility model is provided with grooves on the surface of the left and right parts and across the parting surface. The grooves are filled with putty. Therefore, when the product is formed, the grooves are filled with putty and processed to make the surface smooth. It is smooth and air-tight in the detection, and the parting surface is tightly closed, and the vacuum bag pressing process can be carried out. The use of this structure greatly shortens the product manufacturing cycle, ensures product quality, has low requirements for operators, and is simple and convenient to operate.

Description

Vacuum bag pressing process split mold

technical field

The utility model relates to a composite material vacuum bag pressing process split structure mold.

Background technique

At present, in the forming process of FRP composite products, there is a process method of vacuum bag pressing. The most critical thing in this process is to ensure the vacuum degree of the cavity, and it is required to meet the process parameters of 0.1 MPa to maintain the pressure. The structure of the forming mold depends on the shape of the product. For products with uncomplicated shapes and easy demoulding, they can be molded as a whole. For products with complex shapes that cannot be demolded by the whole mold, the mold must be a split mold. However, split molds are prone to poor sealing at the parting position, causing air to enter the mold cavity, failing to meet the requirements of vacuum pressure, resulting in quality problems or even scrapping of the product.

The original combined structure of the split mold is shown in Figure 1: install a 120MM high wooden baffle directly on the parting position of the master mold, first paste the left side of the mold 1, remove the baffle after curing, and paste the right side of the baffle 3. After curing, holes are drilled on the parting surface, and bolts 4 are used to fix the mold; the sealing structure adopts two structures: the first is grooved on the parting surface and polyurethane sealant is applied, and the second is directly pasted with sealing tape on the parting surface . In the first form, less sealant is applied, and breakpoints in mold closing lead to air leakage. More sealant is applied and the parting surface is not tightly closed, resulting in large gaps and affecting product size. It cannot be moved or constructed, and the product manufacturing cycle is lengthened; the disadvantage of the second form is that the right-angled corners and arcs of the mold cannot be guaranteed to stick firmly and conform to the shape, resulting in insufficient vacuum.

Utility model content

The purpose of this utility model is to provide a split mold suitable for the vacuum bag pressure process, which can avoid mold leakage and affect product molding, and at the same time, compared with the form of polyurethane sealant, the construction period increased due to sealant curing is reduced. .

In order to achieve the above purpose, the utility model provides a vacuum bag pressure process split mold, including the left and right two splits, the left and right two splits are fixed by bolts and film, and the feature is that: the surface of the left and right two splits spans the parting surface There is a groove at the center, and the groove is filled with putty, and the surface of the putty is smoothly transitioned to the surface of the left and right halves.

The center line of the groove is located on the parting surface of the left and right halves.

The groove is 2MM deep and 15MM wide.

The utility model is provided with a groove on the surface of the left and right two parts and across the parting surface, and the groove is filled with putty. Therefore, when the product is formed, the groove is filled with putty, and the surface is polished to It is smooth and smooth, no air leakage is detected, and the parting surface is tightly closed, and the vacuum bag pressing process can be carried out. The use of this structure greatly shortens the product manufacturing cycle, guarantees product quality, has low requirements for operators, and is simple and convenient to operate.

Description of drawings

Fig. 1 is a schematic diagram of the original mold parting surface structure;

Fig. 2 is a structural schematic diagram of a specific embodiment of the utility model.

detailed description

Referring to Figure 1, the original mold is divided into left and right parts 1 and 3, grooves 2 and 4 on the parting surface are mold clamping bolts, and sealant is applied in the groove, but it is difficult to ensure an appropriate amount of sealant. If the amount is small, there will be breakpoints in the mold clamping, and the seal will not be tight, resulting in air leakage; if the amount of glue is too large, the parting surface will not be tightly molded, resulting in a large gap in the mold clamping, which will affect the product size, and the mold will be molded at least 24 hours after gluing It cannot be moved, nor can it be constructed. It can only be constructed after the sealant has hardened and has a certain strength, which will lengthen the product manufacturing cycle.

With reference to Fig. 2, the utility model comprises left and right split body 1, 3, and left and right split body is fixed by bolt 4 composite film, is characterized in that: the parting surface place of left and right split body is provided with deep 2MM, the groove of wide 15MM , the center line of the groove is located on the parting surface of the left and right two parts, the groove is filled with putty 5, and the surface of the putty and the mold surface of the left and right two parts make a smooth transition.

Claims (3)

1. A vacuum bag press process split mold, including left and right two splits, the left and right two splits are fixed by bolt film, it is characterized in that: the surface of the left and right two splits and across the parting surface are provided with grooves, concave The slot is filled with atomic ash, and the surface of the atomic ash and the surface of the left and right bipartites are smoothly transitioned. 2. The vacuum bag press process split mold according to claim 1, characterized in that: the center line of the groove is located on the parting surface of the left and right two parts. 3. The split mold for vacuum bag pressing process according to claim 1, characterized in that the groove is 2MM deep and 15MM wide.