Curing device for mechanical property test piece

Abstract

The utility model provides a curing device for a mechanical property test piece, and the curing device comprises a processing container which is used for heating the test piece. The structural frame is arranged in the processing container, the multiple structural layers are arranged in an up-down stacked mode, and every two adjacent structural layers are not tightly attached to each other and form a specific containing cavity. The containing parts are arranged in the containing cavities in a one-to-one correspondence mode, the interiors of the containing parts are used for containing test pieces, each containing part is communicated with a pipeline, the pipelines are communicated with a negative pressure device, and the negative pressure device is used for extracting air in the containing parts so as to pressurize the test pieces in the containing parts. According to the curing device for the mechanical property test piece, a plurality of test pieces can be stably placed through the arrangement of the containing part, the test pieces are protected from being damaged, and the effect of uniformly pressurizing the test pieces is achieved, so that the curing device for the mechanical property test piece has a good curing effect, and preparation of the test pieces is facilitated.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of mechanical property test pieces, in particular to a curing device for mechanical property test pieces. BACKGROUND

[0002] The carbon fiber composite material test piece is a carrier for performance research and quality detection of carbon fiber composite materials. Carbon fiber composite materials have many excellent properties, such as high strength, high modulus, and low density, but the specific performance of these properties in actual application needs to be verified by test pieces. The test piece is made according to certain standards and requirements, starting from the raw materials of carbon fiber composite materials, and using a specific molding process to build it. The curing step of the test piece needs to be completed with the help of a curing device. The existing curing device has poor curing effect and is not conducive to the preparation of test pieces. CONTENT OF THE INVENTION

[0003] To overcome the problems in the related art, the present application provides a curing device for mechanical property test pieces.

[0004] According to the embodiments of the present disclosure, a curing device for mechanical property test pieces is provided, which comprises:

[0005] A processing container is used to heat the test pieces.

[0006] A structural frame is arranged in the processing container, and the structural frame comprises a plurality of structural layers arranged in layers, and a containing cavity is formed between adjacent structural layers.

[0007] A plurality of accommodation portions are arranged one by one in the containing cavities, and the accommodation portions are used to place test pieces. Each accommodation portion is connected with a pipeline, and the pipeline is connected with a negative pressure device to extract air inside the accommodation portion to pressurize the test pieces.

[0008] In some embodiments, the length of the containing cavities gradually decreases along the stacking direction of the structural layers, and the length of the accommodation portions gradually decreases.

[0009] In some embodiments, each accommodation portion comprises a first end portion and a second end portion, the first end portions of the accommodation portions are flush, and the second end portions of the accommodation portions are arranged staggered. Each pipeline is in communication with the second end portion of the corresponding accommodation portion.

[0010] In some embodiments, the width of the accommodation portions is the same, and the height of the accommodation portions is the same.

[0011] The length difference between two adjacent containing cavities is not less than a preset threshold, and the range of the preset threshold is 180mm-220mm.

[0012] In some embodiments, the pipeline is in communication with the accommodation portion through a connecting piece, the pipeline is detachably connected with the connecting piece, and the connecting piece is detachably connected with the accommodation portion.

[0013] In some embodiments, the structural frame is arranged in the processing container through a mesh structure.

[0014] In some embodiments, the mesh structure is arranged as a support seat arranged in the processing container, the structural frame is connected with the support seat, and a plurality of ventilation holes are arranged on the support seat.

[0015] In some embodiments, the curing device for the mechanical property test piece further comprises a cooler for cooling.

[0016] In some embodiments, the structural frame is detachably arranged with the accommodation portion.

[0017] In some embodiments, the bottom of the processing container is provided with a base, and the bottom of the base is provided with universal wheels.

[0018] The technical scheme provided by the embodiments of the present application can have the following beneficial effects: the processing container provides a heating environment for the test piece, the arrangement of the structural frame plays a role in mechanical support and optimization of heat transfer for the test piece, the arrangement of the accommodation portion can stably place the test piece and protect the test piece from being damaged, the accommodation portion is arranged in multiple, each accommodation portion can place multiple test pieces, so that more test pieces can be cured at the same time, the curing efficiency is improved, and the test piece is uniformly pressed by the negative pressure pressurization mode, so that the curing device for the mechanical property test piece has good curing effect and is beneficial to the preparation of the test piece.

[0019] It should be understood that the above general description and the following detailed description are only exemplary and explanatory, and cannot limit the present application. BRIEF DESCRIPTION OF DRAWINGS

[0020] The drawings incorporated into the specification and forming a part thereof illustrate embodiments consistent with the present application and, together with the specification, serve to explain the principles of the present application.

[0021] Figure 1 is a schematic internal structure diagram of a curing device for a mechanical property test piece according to an exemplary embodiment.

[0022] Reference signs:

[0023] 1, processing container; 2, structural frame; 3, accommodation portion; 4, pipeline; 5, connecting piece; 6, mesh structure; 61, ventilation hole; 7, base; 8, universal wheel. DETAILED DESCRIPTION

[0024] The exemplary embodiments will be described in detail herein with reference to the attached drawings. In the following description, like reference numerals refer to like elements, unless the context clearly dictates otherwise. The following description of exemplary embodiments is not intended to represent all embodiments in accordance with the present application. Rather, they are merely examples in accordance with some aspects of the present application as detailed in the appended claims.

[0025] The carbon fiber composite test piece is a carrier for performance research and quality detection of carbon fiber composite materials. Carbon fiber composite materials have many excellent properties, such as high strength, high modulus, low density, etc., but the specific performance in actual application needs to be verified by test pieces. The test piece is made according to certain standards and requirements, starting from the raw materials of carbon fiber composite materials, using a specific molding process to build it. The curing step of the test piece needs to be completed with the help of a curing device. The existing curing device is a hot press tank, which provides a temperature and pressure environment for the test piece to cure. The existing curing device has poor curing effect, which is not conducive to the preparation of the test piece.

[0026] To solve the problems in the related art, the present application provides a mechanical property test piece curing device. The device includes a processing container for heating the test piece. A structural frame is arranged in the processing container, and a plurality of structural layers are arranged in a stacked manner. The adjacent two structural layers are not tightly attached, but form a specific accommodating cavity. A plurality of accommodating parts are respectively and one-to-one corresponding to the plurality of accommodating cavities. The accommodating part is used for placing the test piece. Each accommodating part is connected with a pipeline. The pipeline penetrates the structural layer. One end of the pipeline is connected with the accommodating part, and the other end of the pipeline is connected with a negative pressure device. The negative pressure device is used for extracting air inside the accommodating part to pressurize the test piece inside the accommodating part. The processing container provides a heating environment for the test piece. The structural frame plays a role of mechanical support and heat transfer optimization for the test piece. The accommodating part can stably place the test piece and protect the test piece from damage. The test piece is uniformly pressurized. Therefore, the mechanical property test piece curing device has good curing effect and is conducive to the preparation of the test piece.

[0027] According to an exemplary embodiment of the present application, as Figure 1As shown in the figure, a curing device for mechanical performance test pieces includes a processing container 1, which provides a closed and controllable heating environment for the test pieces. In some embodiments, the processing container 1 can be made of high-temperature-resistant stainless steel. The processing container 1 is in the shape of a cylinder with its axis arranged horizontally. A hatch is arranged on one of the planes of the cylinder to facilitate the placement or removal of test pieces. The processing container 1 is equipped with heating elements, which can be resistance wire heating devices or infrared heating plates, to raise the temperature inside the container to the desired curing temperature range of the test pieces.

[0028] A structural frame 2 is arranged inside the processing container 1. The material of the structural frame 2 can be steel to ensure its strength and stability, enabling it to withstand the temperature, pressure, and weight of the test pieces and the accommodation portions 3 during the curing process. The structural frame 2 includes multiple structural layers arranged in a stacked manner. A specific accommodation cavity is formed between any two adjacent structural layers. In some embodiments, the accommodation cavity is in the shape of a cuboid. The structural frame 2 includes a top frame and a side frame. In other embodiments, a partition plate can be fixed on the top frame and the side frame.

[0029] Multiple accommodation portions 3 are placed one by one in the respective accommodation cavities. The accommodation portions 3 are used to place the test pieces. The material of the accommodation portions 3 is aluminum alloy, which can ensure the stable placement of the test pieces in the accommodation portions 3 and avoid damage caused by hard extrusion due to thermal expansion and contraction during the curing process of the test pieces. Multiple test pieces can be placed in each accommodation portion 3 to achieve simultaneous curing of multiple test pieces and improve the curing efficiency.

[0030] Each accommodation portion 3 is connected with a pipeline 4, which is arranged through the structural layers. One end of the pipeline 4 communicates with the inside of the accommodation portion 3, and the other end of the pipeline 4 is connected with a negative pressure device. In some embodiments, as shown in the figure, the pipeline 4 is arranged at the top of the accommodation portion 3, and each accommodation portion 3 is connected with two pipelines 4, which are symmetrically arranged. Figure 1 When the negative pressure device is started, it can extract the air inside the accommodation portion 3. As the air inside the accommodation portion 3 is gradually extracted, the pressure inside the accommodation portion 3 is lower than the external atmospheric pressure, and the external atmospheric pressure extrudes the test pieces into the accommodation portion 3, generating pressure on the test pieces from the outside. This pressure process achieved by negative pressure makes the pressure distribution more uniform, which can avoid the problem of excessive or insufficient local stress on the test pieces caused by uneven pressure compared to the traditional mechanical pressure method, thereby ensuring that each part of the test piece can receive uniform and appropriate pressure during the curing process and improving the curing effect of the test piece. At the same time, by adjusting the air extraction rate and vacuum degree of the negative pressure device, the pressure applied to the test piece can be accurately controlled, meeting the different requirements of different test pieces for curing pressure.

[0031] The processing container 1 provides a heating environment for the test piece, the structural frame 2 is arranged to mechanically support the test piece and optimize heat transfer, and the accommodation part 3 is arranged to stably place the test piece, protect the test piece from damage, and uniformly pressurize the test piece. Therefore, the curing device for the mechanical property test piece has good curing effect and is beneficial to the preparation of the test piece.

[0032] In some embodiments, the length of the plurality of accommodation cavities gradually decreases along the stacking direction of the structural layer, that is, the up-down direction. Figure 1 When the curing device is subjected to various external forces during operation, such as stress caused by thermal expansion and contraction, impact force caused by airflow in the processing container 1, or vibration caused by the movement of the device as a whole, the accommodation cavities of different lengths can evenly distribute the stress on the structural frame 2, avoiding stress concentration in a certain area, thereby improving the stability and durability of the structural frame 2, ensuring that the structural frame 2 can reliably bear the accommodation part 3 during long-term use and maintaining the normal operation of the device. The decreasing length of the accommodation part 3 can better meet the placement needs of test pieces of different sizes.

[0033] In some embodiments, each accommodation part 3 includes a first end and a second end, and the first ends of the plurality of accommodation parts 3 are flush. When placing the accommodation part 3 in the accommodation cavity, it can be quickly and accurately positioned, improving the assembly efficiency of the device. At the same time, during subsequent operations such as inspection, maintenance, or test piece placement and removal of the accommodation part 3, the flush first ends also facilitate the identification and operation of the operator, reducing the likelihood of operational errors due to complex structures. The second ends of the plurality of accommodation parts 3 are staggered, providing sufficient space for the connection of the pipes 4. Each pipe 4 is in communication with the second end of the corresponding accommodation part 3, avoiding mutual entanglement and interference between the pipes 4. Each pipe 4 is in communication with the second end of the corresponding accommodation part 3, and this connection method allows each accommodation part 3 to independently connect to the negative pressure device, thereby achieving precise control of the pressure inside each accommodation part 3. When the negative pressure device is activated to extract air, due to the independence of each accommodation part 3, the pressure experienced by each test piece can be precisely adjusted according to its own curing process requirements.

[0034] In some embodiments, the plurality of accommodation portions 3 have the same width. From the perspective of manufacturing, the uniform width makes the production process of the accommodation portions 3 more convenient and efficient, enabling batch manufacturing with standardized molds and processes, thereby reducing production costs and production cycles. In actual use, the same width facilitates faster and more accurate positioning and installation when placing the accommodation portions 3 in the accommodation cavities, reducing the likelihood of placement errors or instability due to size differences, and improving the assembly efficiency and accuracy of the device. Moreover, the uniform width also facilitates operation during maintenance, replacement, or adjustment of the accommodation portions 3, making the related work more convenient and efficient. The plurality of accommodation portions 3 have the same height. The same height allows the accommodation portions 3 to be neatly arranged within the accommodation cavities, and also facilitates the uniform flow of hot air between the accommodation portions 3, which is conducive to uniform heating of the test pieces during the curing process and improves the consistency of the curing effect.

[0035] The length difference between two adjacent accommodation cavities is not less than a preset threshold, wherein the preset threshold ranges from 180mm to 220mm. That is, the length difference between two adjacent accommodation portions 3 is not less than a preset threshold, and the preset threshold ranges from 180mm to 220mm. In some embodiments, the length difference between two adjacent accommodation cavities is 200mm, and the length difference between two adjacent accommodation portions 3 is 200mm. This facilitates the processing of the structural layer and the accommodation portions 3.

[0036] In some embodiments, the pipe 4 is in communication with the accommodation portion 3 through the connecting piece 5, the pipe 4 is detachably connected with the connecting piece 5, and the connecting piece 5 is detachably connected with the accommodation portion 3. The connecting piece 5 is a metal product, and the cross section of the connecting piece 5 gradually decreases in the direction of extracting air. In other embodiments, a through hole is provided on the accommodation portion 3 for the connecting piece 5 to pass through, the connecting piece 5 is located at the through hole, and the connecting piece 5 can be threadedly connected with the pipe 4, so that the connecting piece 5 can be connected with or detached from the pipe 4 by screwing. The detachable connection of the connecting piece 5 facilitates maintenance and replacement of parts. In other embodiments, a vacuum bag can be wrapped around the test piece, and the connecting piece 5 penetrates the accommodation portion 3 and communicates with the vacuum bag.

[0037] In some embodiments, the structural frame 2 is arranged in the processing container 1 through the net structure 6. The net structure 6 is a support seat arranged in the processing container 1, and the structural frame 2 is connected with the support seat. A plurality of ventilation holes 61 are provided on the support seat. In some embodiments, the support seat includes a frame and a plurality of longitudinally and transversely arranged support rods. The frame is arranged in the processing container 1 and connected with the inner wall of the processing container 1. The connection between the frame and the processing container 1 can be welding or through bolts. The structural frame 2 is arranged on the support rods, and the connection between the structural frame 2 and the support rods can also be welding or through bolts. The space between the support rods is the ventilation hole 61.

[0038] The support base provides a special and stable connection platform for the structural frame 2 in the processing container 1. The support base can bear the weight of the structural frame 2, the accommodating part 3 and the test piece from above, effectively preventing the displacement or shaking of the structural frame 2 during the curing process due to factors such as device vibration and temperature change. The air vents 61 help the circulation of hot air in the processing container 1, ensuring that the heat is evenly distributed to the structural frame 2 and the accommodating part 3, and then ensuring that the test piece can receive stable and uniform heat supply at each part.

[0039] In some embodiments, a cooler is also provided on the processing container 1, which can be a cooling water pipeline. The pipeline is arranged on the outer wall or inside the processing container 1, and the cold water circulates in the pipeline to take away heat and achieve cooling. The temperature in the processing container 1 can be quickly adjusted.

[0040] In some embodiments, the structural frame 2 and the accommodating part 3 are detachably arranged, that is, the accommodating part 3 can be removed from the structural frame 2, which is convenient for the maintenance and replacement of the accommodating part 3. And taking off the accommodating part 3 can more conveniently place the test piece in the accommodating part 3 or take it out of the accommodating part 3, improving the convenience of operation.

[0041] In some embodiments, the bottom of the processing container 1 is provided with a base 7 for stably supporting the processing container 1. The base 7 can be supported by a solid metal plate to ensure stable bearing of the processing container 1 and the components inside the processing container 1, preventing shaking, tilting or even overturning during the operation of the device due to unstable center of gravity or external vibration, and providing a stable and reliable basic environment for the curing of the test piece. The bottom of the base 7 is provided with universal wheels 8 to facilitate the movement of the processing container 1, improving the convenience of the device.

[0042] The mechanical property test piece of the curing device of the present application is reinforced, and after reinforcement is completed, the test piece can be cut into several small test pieces for different mechanical property tests.

[0043] Other embodiments of the present application will be apparent to those skilled in the art from consideration of the specification and practice of the content of the present application. The present application is intended to cover any variations, uses or adaptive changes of the present application following the general principles of the present application and including those falling within the known knowledge or custom of the art to which the present application pertains. The specification and examples are to be regarded as illustrative only, and the true scope and spirit of the present application are indicated by the following claims.

[0044] It should be understood that the present application is not limited to the precise construction that has been described above and shown in the accompanying drawings, and that various modifications and changes can be made by those skilled in the art without departing from the scope of the present application. The scope of the present application is limited only by the appended claims.

Claims

1. A curing device for mechanical property test pieces, characterized by, The application relates to a curing device for mechanical property test pieces. The curing device comprises a processing container for heating test pieces; a structural frame arranged in the processing container, wherein the structural frame comprises a plurality of structural layers arranged in a stack, and a containing cavity is formed between adjacent structural layers; a plurality of accommodation portions arranged in the containing cavities one by one, wherein the accommodation portions are used for placing test pieces, and each accommodation portion is connected with a pipeline connected with a negative pressure device to extract air in the accommodation portion to pressurize the test pieces. The lengths of the containing cavities and the lengths of the accommodation portions gradually decrease along the stacking direction of the structural layers. Each accommodation portion comprises a first end portion and a second end portion, the first end portions of the accommodation portions are flush, and the second end portions of the accommodation portions are arranged staggeredly, and each pipeline is communicated with the second end portion of the corresponding accommodation portion.

2. The curing apparatus for mechanical property test pieces according to claim 1, wherein The widths of the accommodation portions are the same, and the heights of the accommodation portions are the same.

3. The curing apparatus for mechanical property test pieces of claim 2, wherein, The length difference between two adjacent containing cavities is not less than a preset threshold value, and the preset threshold value ranges from 180 mm to 220 mm.

4. The curing apparatus for mechanical property test pieces of claim 2, wherein, The pipeline is communicated with the accommodation portion through a connecting piece, the pipeline and the connecting piece are detachably connected, and the connecting piece and the accommodation portion are detachably connected. The structural frame is arranged in the processing container through a net structure.

5. The curing apparatus for mechanical property test pieces of claim 1 wherein, The net structure is arranged as a support seat arranged in the processing container, the structural frame is connected with the support seat, and a plurality of air holes are arranged on the support seat.

6. The curing apparatus for mechanical property test pieces of claim 1 wherein, The curing device for mechanical property test pieces further comprises a cooler for cooling.

7. The curing apparatus for mechanical property test pieces of claim 6 wherein, The structural frame and the accommodation portion are detachably arranged.

8. The curing apparatus for mechanical property test pieces of claim 1 wherein, A base is arranged at the bottom of the processing container, and universal wheels are arranged at the bottom of the base.

9. The curing apparatus for mechanical property test pieces of claim 1 wherein, ​ 10. The curing apparatus for mechanical property test pieces of claim 1 wherein, ​

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