Water-soluble mold for molding composite material

Abstract

The utility model relates to the field of molds, in particular to a water-soluble mold for forming a composite material, which comprises a base, a first module, a second module, a third module and a fourth module, the base is provided with fixing holes used for fixing the first module, the second module, the third module and the fourth module. The first module is respectively clamped with the third module and the fourth module, and the second module is respectively clamped with the third module and the fourth module; the first module, the third module and the fourth module are locked through fasteners, and the second module, the third module and the fourth module are locked through fasteners. According to the water-soluble mold for forming the composite material, the machining cost of the mold is reduced, the yield of the mold is improved, the forming quality of a product is improved, and the water-soluble mold has great advantages on cost control.

Description

Technical Field

[0001] The utility model relates to the field of molds, in particular to a water-soluble mold for composite material molding. Background Art

[0002] In the process of manufacturing resin-based composite products, metal materials are usually selected as mold materials because metal materials have high thermal conductivity and good rigidity, and metal materials can be processed to have good surface roughness, and the manufactured composite products also have good surface roughness. However, for complex structural special-shaped composite products, the use of metal molds has certain limitations. For example, for parts with complex closed cavities, small outlets, large inner cavities, or parts that do not allow draft angles, if traditional metal molds are used, it is necessary to combine multiple molds or divide the composite products into multiple pieces and bond them together after manufacturing them separately. This not only complicates the manufacturing process, prolongs the manufacturing cycle, and greatly increases the cost, but also makes it extremely difficult to demold the composite products. Molds made of water-soluble materials can solve this difficulty. At present, the main components of water-soluble materials on the market are ceramic microbeads and water-soluble polymer adhesives. After being precisely proportioned and molded, they are placed in a room temperature drying and curing furnace for heating and curing to achieve the expected use function, and can be completely hydrolyzed after being soaked in water. The preparation method of the water-soluble mold can refer to the Chinese invention patent with publication number CN101665609, entitled Water-soluble mold material for resin-based composite materials and method for making water-soluble molds. After the existing water-soluble molds are cured by heating, cracks of varying degrees will appear locally. The depth of the cracks directly affects the compressive strength and compression creep rate of the water-soluble molds, resulting in a low product yield, which ultimately has an adverse effect on the reliability of the composite materials. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a water-soluble mold for composite material molding and improve the yield rate of the water-soluble mold.

[0004] In order to solve the above technical problems, the technical solution adopted by the utility model is: a water-soluble mold for composite material molding, comprising:

[0005] The base, the first module, the second module, the third module and the fourth module are enclosed to form a cavity;

[0006] The base is provided with fixing holes for fixing the first module, the second module, the third module and the fourth module;

[0007] The first module is respectively connected with the third module and the fourth module, and the second module is respectively connected with the third module and the fourth module;

[0008] The first module, the third module and the fourth module are locked by fasteners, and the second module, the third module and the fourth module are locked by fasteners.

[0009] Furthermore, the first module and the second module are both provided with positioning bosses, and the third module and the fourth module are both provided with positioning grooves, and the positioning bosses are engaged with the positioning grooves.

[0010] Furthermore, the first module, the second module, the third module and the fourth module are all provided with lock holes for fasteners to pass through.

[0011] Furthermore, the axis of the fixing hole is perpendicular to the axis of the positioning groove, and the axis of the positioning groove is parallel to the axis of the locking hole.

[0012] Furthermore, the fastener includes a pull rod and a nut, and the pull rod is connected to the nut after passing through the lock hole.

[0013] Furthermore, the first module, the second module, the third module and the fourth module are locked with the fixing holes by means of bolts.

[0014] Furthermore, the base is provided with a column extending into the cavity.

[0015] The beneficial effects of the utility model are as follows: the base plays a supporting and fixing role in the water-soluble mold for composite material molding, and the first module and the second module are first locked in the fixed position of the base during installation, and then the third module and the fourth module are installed from both sides respectively, so that the third module and the fourth module are clamped with the first module and the second module for positioning, and then the third module and the fourth module are locked in the fixed position of the base, and finally the first module, the second module, the third module and the fourth module are locked and fixed by fasteners to complete the mold. The water-soluble mold for composite material molding provided by the utility model reduces the processing cost of the mold, improves the mold yield, improves the product molding quality, and has great advantages in cost control. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the structure of a water-soluble mold for composite material molding;

[0017] Figure 2 Another schematic diagram of the structure of a water-soluble mold for composite material molding;

[0018] Figure 3 An exploded view of a water-soluble mold for composite molding;

[0019] Figure 4 Another exploded view of a water-soluble mold for composite molding;

[0020] Description of labels:

[0021] 1. Base; 11. Fixing hole; 12. Column; 2. First module; 21. Positioning boss; 22. Lock hole; 3. Second module; 4. Third module; 41. Positioning slot; 5. Fourth module; 6. Fastener; 61. Pull rod; 62. Nut; 7. Bolt. DETAILED DESCRIPTION

[0022] In order to explain the technical content, achieved objectives and effects of the present invention in detail, the following is an explanation in conjunction with the implementation modes and the accompanying drawings.

[0023] The utility model provides a water-soluble mold for composite material molding. Aiming at the problem of difficult demoulding of metal molds during composite material cabin molding, the utility model solves the above problem by preparing a water-soluble mold, thereby meeting the expected requirements in terms of cost control, process implementation and quality assurance.

[0024] Please refer to Figures 1 to 4 As shown, the water-soluble mold for composite material molding of the utility model comprises:

[0025] The base 1, the first module 2, the second module 3, the third module 4 and the fourth module 5 are enclosed to form a cavity;

[0026] The base 1 is provided with fixing holes 11 for fixing the first module 2, the second module 3, the third module 4 and the fourth module 5;

[0027] The first module 2 is respectively connected with the third module 4 and the fourth module 5, and the second module 3 is respectively connected with the third module 4 and the fourth module 5;

[0028] The first module 2 , the third module 4 and the fourth module 5 are fastened by the fastener 6 , and the second module 3 , the third module 4 and the fourth module 5 are fastened by the fastener 6 .

[0029] From the above description, it can be seen that the beneficial effect of the utility model is that the base 1 plays a supporting and fixing role in the water-soluble mold for composite material molding. When installing, the first module 2 and the second module 3 are first locked with the fixed position of the base 1, and then the third module 4 and the fourth module 5 are installed from both sides, so that the third module 4 and the fourth module 5 are clamped with the first module 2 and the second module 3 for positioning, and then the third module 4 and the fourth module 5 are locked with the fixed position of the base 1, and finally the first module 2, the second module 3, the third module 4 and the fourth module 5 are locked and fixed by the fastener 6 to complete the mold. The water-soluble mold for composite material molding provided by the utility model reduces the processing cost of the mold, improves the mold yield, improves the product molding quality, and has great advantages in cost control.

[0030] In an optional embodiment, the first module 2 and the second module 3 are both provided with a positioning boss 21 , the third module 4 and the fourth module 5 are both provided with a positioning groove 41 , and the positioning boss 21 is engaged with the positioning groove 41 .

[0031] It can be seen from the above description that pre-positioning by the positioning boss 21 and the positioning groove 41 helps to improve the mold quality.

[0032] In an optional embodiment, the first module 2 , the second module 3 , the third module 4 and the fourth module 5 are all provided with a locking hole 22 for the fastener 6 to pass through.

[0033] In an optional embodiment, the axis of the fixing hole 11 is perpendicular to the axis of the positioning groove 41 , and the axis of the positioning groove 41 is parallel to the axis of the locking hole 22 .

[0034] In an optional embodiment, the fastener 6 includes a pull rod 61 and a nut 62 , and the pull rod 61 passes through the locking hole 22 and is connected to the nut 62 .

[0035] In an optional embodiment, the first module 2 , the second module 3 , the third module 4 and the fourth module 5 are locked with the fixing holes 11 by bolts 7 .

[0036] In an optional embodiment, the base 1 is provided with a column 12 extending into the cavity.

[0037] The working principle of the utility model is: after the mold is closed, the mixed sand core mold paste is poured into the mold, compacted with a tamping rod, and then dried in a curing furnace to open the mold.

[0038] Weigh the floating beads, PVP and water in a fixed proportion using an electronic scale. Mix the three into an open container and stir them thoroughly with an electric mixer for about 60 minutes until they are in the form of "fine sand". No undissolved particles are allowed to exist. Tamp the raw materials placed in the mold with tools. In order to make the mechanical properties of the core mold material uniform, a two-time filling and tamping method is used. During the first filling, pour the fine sand evenly to 3 / 4 of the mold. As the tamping progresses, the height of the fine sand after tamping usually drops to 2 / 3 of the mold cavity. During the last filling, fill the fine sand to a height of 1 cm higher than the upper surface of the mold. After continuing to tamp with tools, use a scraper to scrape off and smooth the fine sand on the upper surface of the mold. Place the mold filled with fine sand in a constant temperature blast drying oven for drying and curing. The curing temperature refers to the highest temperature (150°C) when the composite shell is cured, and the time is suitable for the quality of the mold to remain unchanged (4h). Finally, cool the dried and cured mold to room temperature, gently remove the sample from the mold, gently file the uneven parts of the sample with a file, and then pass the quality inspection.

[0039] Please refer to Figures 1 to 4 As shown, the first embodiment of the utility model is: a water-soluble mold for molding a composite material, comprising:

[0040] The base 1, the first module 2, the second module 3, the third module 4 and the fourth module 5 are enclosed to form a cavity;

[0041] The base 1 is provided with fixing holes 11 for fixing the first module 2, the second module 3, the third module 4 and the fourth module 5;

[0042] The first module 2 is respectively connected with the third module 4 and the fourth module 5, and the second module 3 is respectively connected with the third module 4 and the fourth module 5;

[0043] The first module 2 , the third module 4 and the fourth module 5 are fastened by the fastener 6 , and the second module 3 , the third module 4 and the fourth module 5 are fastened by the fastener 6 .

[0044] The first module 2 and the second module 3 are each provided with a positioning boss 21, and the third module 4 and the fourth module 5 are each provided with a positioning groove 41, and the positioning boss 21 is engaged with the positioning groove 41. The first module 2, the second module 3, the third module 4 and the fourth module 5 are each provided with a locking hole 22 for the fastener 6 to pass through. The axis of the fixing hole 11 is perpendicular to the axis of the positioning groove 41, and the axis of the positioning groove 41 is parallel to the axis of the locking hole 22. The fastener 6 includes a pull rod 61 and a nut 62, and the pull rod 61 is connected to the nut 62 after passing through the locking hole 22. The first module 2, the second module 3, the third module 4 and the fourth module 5 are locked with the fixing hole 11 by bolts 7. The base 1 is provided with a column 12 extending into the cavity.

[0045] In summary, the water-soluble mold for composite material molding of the utility model has a supporting and fixing function in the base. When installing, the first module and the second module are first locked in the fixed position of the base, and then the third module and the fourth module are installed from both sides, so that the third module and the fourth module are clamped with the first module and the second module for positioning, and then the third module and the fourth module are locked in the fixed position of the base, and finally the first module, the second module, the third module and the fourth module are locked and fixed by fasteners to complete the mold. The water-soluble mold for composite material molding provided by the utility model reduces the processing cost of the mold, improves the mold yield, improves the product molding quality, and has great advantages in cost control.

[0046] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent transformations made using the contents of the specification and drawings of the present invention, or directly or indirectly applied in the relevant technical field, are also included in the patent protection scope of the present invention.

Claims

1. A water-soluble mold for composite material molding, characterized in that: include: The base, the first module, the second module, the third module and the fourth module are enclosed to form a cavity; The base is provided with fixing holes for fixing the first module, the second module, the third module and the fourth module; The first module is respectively connected with the third module and the fourth module, and the second module is respectively connected with the third module and the fourth module; The first module, the third module and the fourth module are locked by fasteners, and the second module, the third module and the fourth module are locked by fasteners.

2. The water-soluble mold for composite material molding according to claim 1, characterized in that: The first module and the second module are both provided with positioning bosses, and the third module and the fourth module are both provided with positioning grooves, and the positioning bosses are clamped with the positioning grooves.

3. The water-soluble mold for composite material molding according to claim 2, characterized in that: The first module, the second module, the third module and the fourth module are all provided with lock holes for fasteners to pass through.

4. The water-soluble mold for composite material molding according to claim 3, characterized in that: The axis of the fixing hole is perpendicular to the axis of the positioning groove, and the axis of the positioning groove is parallel to the axis of the locking hole.

5. The water-soluble mold for composite material molding according to claim 2, characterized in that: The fastener comprises a pull rod and a nut, and the pull rod is connected with the nut after passing through the lock hole.

6. The water-soluble mold for composite material molding according to claim 1, characterized in that: The first module, the second module, the third module and the fourth module are locked with the fixing holes through bolts.

7. The water-soluble mold for composite material molding according to claim 1, characterized in that: The base is provided with a column extending into the cavity.

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