CN217144971U - Heatable prepreg paving layer pre-compaction tool - Google Patents
Heatable prepreg paving layer pre-compaction tool Download PDFInfo
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- CN217144971U CN217144971U CN202220658011.9U CN202220658011U CN217144971U CN 217144971 U CN217144971 U CN 217144971U CN 202220658011 U CN202220658011 U CN 202220658011U CN 217144971 U CN217144971 U CN 217144971U
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Abstract
The utility model provides a heatable preimpregnation cloth layer precompaction frock, include: a platform; the heating part is arranged in the platform; the sealing gasket is arranged above the platform; the upper sealing part is arranged above the sealing gasket and is arranged around the edge of the sealing gasket; the lower sealing part is arranged below the platform and corresponds to the upper sealing part in position; the clamping part is used for detachably clamping the upper sealing part and the lower sealing part to seal the edge of the sealing gasket; and the vacuum nozzle is arranged on the upper surface of the platform, is positioned on the inner side of the area defined by the upper sealing part and is used for being connected with the vacuumizing device. According to the heatable prepreg laying-layer pre-compaction tool, the platform has a heating function, and can heat prepreg and improve the compaction rate between layers; the preheating layering and vacuum pre-compaction are integrated, so that the preparation efficiency is improved; the preheating temperature is adjustable, and the excess resin flows through adjusting the temperature of the platform and is guided out through the adhesive absorption felt, so that the thickness of the product is controlled.
Description
Technical Field
The utility model belongs to the technical field of the frock for prepreg layup, concretely relates to heatable prepreg layup precompression solid frock.
Background
In the preparation process of the fiber reinforced resin matrix composite material product, the prepreg needs to be layered to form the structure of the composite material product, and the layering and pre-compaction of the prepreg usually adopt manual layering or automatic equipment layering. The forming process of artificial layering and vacuum pre-compaction has wide application prospect in the occasions of manufacturing principle samples, small-batch production, complex product profiles and the like.
The manual laying is usually completed on a prepreg laying tool, the structure of the tool commonly used at present is simpler, the tool comprises a platform for laying prepreg, laying of the prepreg is completed on the platform, then vacuum auxiliary materials are sequentially placed, and the prepreg is subjected to vacuum pre-compaction on the platform. For example, chinese patent publication No. CN112848368A discloses a method for performing a thermal diaphragm, in which a combined detachable tool is used as a common molding tool for laying and thermal diaphragm performing, the tool is composed of a main performing tool and an auxiliary laying tool, and the main performing tool is a simple platform for prepreg laying. However, the manual laying and vacuum precompaction process using the existing laying tool still has the following disadvantages compared with the automatic equipment laying: firstly, the sticking rate between prepreg layers is not good; and secondly, the control of the glue content is not facilitated, so that the product thickness is controlled, and the mechanical property of the product is improved.
SUMMERY OF THE UTILITY MODEL
The technical problem solved by the utility model is to provide a heatable prepreg spread layer pre-compaction tool, the platform of which has a heating function and can heat the prepreg and improve the compaction rate between layers, thereby improving the quality of the spread layer of the prepreg; the preheating temperature of the tool is adjustable, and the excess resin can flow by adjusting the temperature of the platform and then be led out by the adhesive absorption felt, so that the thickness of a product is controlled, and the mechanical property of the product is improved.
In order to solve the problem, the utility model provides a heatable preimpregnation layer precompaction frock, include:
a platform for laying prepreg;
the heating part is arranged in the platform and used for heating the platform;
the sealing gasket is arranged above the platform;
the upper sealing part is arranged above the sealing gasket and is arranged around the edge of the sealing gasket;
the lower sealing part is arranged below the platform and corresponds to the upper sealing part in position;
the clamping part is used for detachably clamping the upper sealing part and the lower sealing part to seal the edge of the sealing gasket;
and the vacuum nozzle is arranged on the upper surface of the platform, is positioned on the inner side of the area defined by the upper sealing part and is used for being connected with a vacuumizing device.
Preferably, the heatable prepreg laying-up pre-compaction tool further comprises:
the groove is arranged on the upper surface of the platform and is arranged along the bottom edge of the upper sealing part;
and the sealing strip is arranged in the groove.
Preferably, the heatable prepreg laying-up pre-compaction tool further comprises:
and the temperature control device is electrically connected with the heating part and is used for controlling the temperature of the heating part.
Preferably, the upper seal portion is an annular plate surrounding an edge of the seal gasket;
the lower sealing part is an annular plate with the shape and the size identical to those of the upper sealing part.
Preferably, the upper sealing part and the lower sealing part are made of aluminum alloy.
Preferably, the platform is a fibre reinforced resin based composite material.
Preferably, the sealing pad is a silicone pad.
Preferably, the lower sealing portion is fixedly connected with the platform.
Preferably, the heating part is a layered structure, and the heating part is parallel to the upper surface of the platform.
Preferably, the clamping portion is a quick clamp.
Compared with the prior art, the utility model, following beneficial effect has:
1. the utility model discloses a heatable preimpregnation material layer pre-compaction frock, the platform of frock possesses the heating function, can heat preimpregnation material, when spreading the layer, clean room temperature generally sets up at 25 ℃, preimpregnation material is more hard at this moment and is difficult for spreading the layer, leads to the laminating rate between the layer not good, probably appears the crane span structure and mix with the problem such as air, through set up heating portion in the platform, preheats preimpregnation material in the process of spreading the layer, can overcome above defect, obtain better shop's layer quality; the tool integrates two functions of preheating a laying layer and vacuum pre-compacting, so that the preparation efficiency can be greatly improved;
2. the heatable prepreg paving layer pre-compaction tool is also provided with the temperature control device, the preheating temperature of the tool is adjustable by adjusting the heating temperature of the heating part through the temperature control device, redundant resin flows by adjusting the temperature, and the resin is led out through the glue absorption felt, so that the thickness of a product is controlled, and the fiber content of the product is improved to obtain higher mechanical property;
3. the utility model discloses a heatable preimpregnation material shop layer precompaction frock, the platform adopts fibre reinforced resin base combined material, and the complicated curved surface of the high accuracy of making that fibre reinforced resin base combined material can be more convenient is applicable in the preimpregnation material shop layer structure of the various different shapes of preparation.
Drawings
Fig. 1 is a schematic structural diagram of a heatable prepreg ply pre-compaction tool according to embodiment 1 of the present invention.
Wherein: 1-upper sealing part; 2-a sealing gasket; 3-air felt; 4-demolding cloth; 5-prepreg; 6-glue absorption felt; 7-a vacuum nozzle; 8-sealing strips; 9-lower seal; 10-a platform; 11-a heating section; 12-grooves.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but 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 thus, should not be construed as limiting the present invention.
Example 1
As shown in fig. 1, the heatable prepreg ply pre-compaction tool according to the embodiment includes:
a platform 10 for laying the prepreg 5;
a heating unit 11 disposed inside the stage 10 to heat the stage 10;
the sealing gasket 2 is arranged above the platform 10;
an upper sealing part 1 which is arranged above the sealing gasket 2 and is arranged around the edge of the sealing gasket 2;
a lower sealing part 9 provided below the stage 10 and corresponding to the upper sealing part 1;
a clamp portion that detachably clamps the upper seal portion 1 and the lower seal portion 9, and seals the edge of the gasket 2;
and the vacuum nozzle 7 is arranged on the upper surface of the platform 10, is positioned on the inner side of the area enclosed by the upper sealing part 1, and is used for being connected with a vacuum-pumping device.
The process of laying and pre-compacting the prepreg by using the heatable prepreg laying and pre-compacting tool described in the embodiment comprises the following steps: 1. cleaning the composite material platform, and applying a release agent; 2. connecting a vacuum pump and a vacuum meter through a vacuum nozzle, laying a sealing gasket on a platform, placing an upper sealing part above the sealing gasket and surrounding the edge of the sealing gasket, clamping the upper sealing part and a lower sealing part correspondingly arranged in position through a clamping part so as to seal the peripheral edge of the sealing gasket, debugging a vacuum system, closing a vacuum switch after debugging is finished, detaching the upper sealing part and the sealing gasket, and placing the sealing gasket on one side for standby; 3. opening the heating part to start preheating the platform; 4. laying a glue absorption felt 6 on the platform; 5. laying the prepreg 5 on a rubber suction felt until the number of layers is specified, and scraping each layer by using a scraper blade; 6. laying a demoulding cloth 4 on the prepreg; 7. paving a breathable felt 3 on the demoulding cloth; 8. laying a sealing gasket on the breathable felt, then placing an upper sealing part above the sealing gasket, and clamping the upper sealing part and a lower sealing part through a clamping part; 9. opening a vacuum switch to vacuumize until the specified number is indicated by the vacuum; 10. and (3) maintaining the pressure for a specified time at a specified temperature, opening the cover, taking out the prepreg, and finishing the laying and pre-compaction of the prepreg.
In the heatable prepreg laying layer pre-compaction tool, a platform of the tool has a heating function and can heat prepreg, the temperature of a clean room is generally set at 25 ℃ when laying layers, the prepreg is harder and is not easy to lay layers, so that the problems of poor sticking rate between layers, bridge frame, air inclusion and the like are caused, the prepreg is preheated in the laying process by arranging the heating part in the platform, the defects can be overcome, and better laying quality is obtained; and the tool integrates two functions of preheating and paving layers and vacuum pre-compaction, so that the preparation efficiency can be greatly improved.
As a preferred embodiment, the heatable prepreg ply pre-compaction tool further comprises:
a groove 12 provided on the upper surface of the platform 10 and along the bottom edge of the upper sealing part 1;
and the sealing strip 8 is arranged in the groove 12.
The gap between the sealing gasket and the platform is sealed under the action of the sealing strip, so that the sealing performance during vacuum pumping is further ensured.
As a preferred embodiment, the heatable prepreg ply pre-compaction tool further comprises:
and the temperature control device is electrically connected with the heating part and is used for controlling the temperature of the heating part.
The heating temperature of the heating part is adjusted through the temperature control device, so that the preheating temperature of the tool can be adjusted, redundant resin flows through adjusting the temperature, and then the resin is led out through the glue absorption felt, so that the thickness of a product is controlled, the fiber content of the product is improved, and higher mechanical property is obtained.
In a preferred embodiment, the heating unit 11 has a layered structure, and is parallel to the upper surface of the stage 10. The heating uniformity of the platform can be ensured.
Further, the heating unit may be a structure in which a plurality of heating wires are arranged side by side, or may be a heating plate.
As a preferred embodiment, the upper seal portion 1 is an annular plate surrounding the edge of the seal gasket 2; the lower seal portion 9 is an annular plate having the same shape and size as the upper seal portion 1.
In a preferred embodiment, the clamping portion is a quick clamp. The upper sealing part and the lower sealing part can be clamped or loosened quickly, and the operation is convenient and quick.
In a preferred embodiment, the upper seal portion 1 and the lower seal portion 9 are made of an aluminum alloy. The aluminum alloy material is convenient for the quick clamp to apply clamping pressure.
As a preferred embodiment, the platform 10 is a fiber reinforced resin based composite material. The fiber reinforced resin matrix composite material can be used for conveniently manufacturing high-precision complex curved surfaces and is suitable for preparing prepreg paving layers of various shapes.
In a preferred embodiment, the sealing pad 2 is a silicone pad.
In a preferred embodiment, the lower sealing portion 9 is fixedly connected to the platform 10.
The whole process of laying and pre-compacting the prepreg by using the heatable prepreg laying and pre-compacting tool in the embodiment comprises the following steps: cleaning the composite material platform, and applying a release agent; connecting a vacuum pump and a vacuum meter through a vacuum nozzle, laying a sealing gasket on a platform, placing an upper sealing part above the sealing gasket and surrounding the edge of the sealing gasket, clamping the upper sealing part and a lower sealing part correspondingly arranged in position through a quick clamp so as to seal the peripheral edge of the sealing gasket, debugging a vacuum system, closing a vacuum switch after the debugging is finished, detaching the upper sealing part and the sealing gasket, and placing the sealing gasket on one side for standby; opening the heating part to start preheating the platform, and heating the heating part to a specified temperature through the temperature control device; paving a glue absorption felt 6 on the platform; laying the prepreg 5 on a rubber suction felt until the number of layers is specified, and scraping each layer by using a scraper blade; laying a demoulding cloth 4 on the prepreg; paving a breathable felt 3 on the demoulding cloth; laying a sealing gasket on the breathable felt, then placing an upper sealing part above the sealing gasket, and clamping the upper sealing part and a lower sealing part through a quick clamp; opening a vacuum switch to vacuumize until the designated number of the vacuum table is indicated; and (3) maintaining the pressure for a specified time at a specified temperature, opening the cover, taking out the prepreg, and finishing the laying and pre-compaction of the prepreg.
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications can be made without departing from the scope of the invention.
Claims (10)
1. The utility model provides a heatable prepreg shop-layup pre-compaction frock which characterized in that includes:
a platform for laying prepreg;
the heating part is arranged in the platform and used for heating the platform;
the sealing gasket is arranged above the platform;
the upper sealing part is arranged above the sealing gasket and is arranged around the edge of the sealing gasket;
the lower sealing part is arranged below the platform and corresponds to the upper sealing part in position;
the clamping part is used for detachably clamping the upper sealing part and the lower sealing part to seal the edge of the sealing gasket;
and the vacuum nozzle is arranged on the upper surface of the platform, is positioned on the inner side of the area defined by the upper sealing part and is used for being connected with a vacuumizing device.
2. The heatable prepreg ply pre-compaction tool according to claim 1, further comprising:
the groove is arranged on the upper surface of the platform and is arranged along the bottom edge of the upper sealing part;
and the sealing strip is arranged in the groove.
3. The heatable prepreg ply pre-compaction tool according to claim 1, further comprising:
and the temperature control device is electrically connected with the heating part and is used for controlling the temperature of the heating part.
4. The heatable prepreg ply pre-compaction tool according to claim 1, characterized in that:
the upper sealing part is an annular plate surrounding the edge of the sealing gasket;
the lower seal portion is an annular plate having the same shape and size as the upper seal portion.
5. The heatable prepreg ply pre-compaction tool according to claim 4, characterized in that:
the upper sealing part and the lower sealing part are made of aluminum alloy materials.
6. The heatable prepreg ply pre-compaction tool according to claim 1, characterized in that: the platform is made of fiber reinforced resin matrix composite.
7. The heatable prepreg ply pre-compaction tool according to claim 1, characterized in that: the sealing gasket is a silica gel gasket.
8. The heatable prepreg ply pre-compaction tool according to claim 1, characterized in that: the lower sealing part is fixedly connected with the platform.
9. The heatable prepreg ply pre-compaction tool according to claim 1, characterized in that: the heating part is of a layered structure and is parallel to the upper surface of the platform.
10. The heatable prepreg ply pre-compaction tool according to claim 1, characterized in that: the clamping part is a quick clamp.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220658011.9U CN217144971U (en) | 2022-03-24 | 2022-03-24 | Heatable prepreg paving layer pre-compaction tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220658011.9U CN217144971U (en) | 2022-03-24 | 2022-03-24 | Heatable prepreg paving layer pre-compaction tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217144971U true CN217144971U (en) | 2022-08-09 |
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ID=82696618
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220658011.9U Active CN217144971U (en) | 2022-03-24 | 2022-03-24 | Heatable prepreg paving layer pre-compaction tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217144971U (en) |
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2022
- 2022-03-24 CN CN202220658011.9U patent/CN217144971U/en active Active
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