Compression molding die capable of exhausting air
By setting up a spill groove in the molding mold, the problem of gas cannot be discharged during the molding process is solved, the fiber tendency is reduced, and the accuracy of mechanical properties testing of composite materials is improved.
Patent Information
- Application Number
- CN202421284213.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-06
- Publication Date
- 2025-02-25
- Estimated Expiration
- 2034-06-06
AI Technical Summary
During the molding process, the gas in the mold cannot be discharged, resulting in the composite fibers tend to distort, affecting the results of the mechanical properties test.
An exhaust-air molding mold is designed, including a mold bottom plate, a limit frame, a mold upper cover plate and a heating plate, and a rubber overflow groove is provided so that the resin can flow in the fiber direction, improving the gas discharge problem.
Through the design of the overflow groove, the problem that gas cannot be eliminated during the molding process is improved, the fiber tends to be distorted after forming is reduced, and the accuracy of mechanical properties testing is improved.
Smart Images
Figure CN222522082U_ABST
Abstract
Description
Technical Field
[0001] The utility model patent relates to the technical field of molds, and specifically, to a ventilated compression molding mold. Background Art
[0002] Before winding the motor rotor, the mechanical properties of the prepreg required for winding need to be evaluated. The mechanical properties of composite materials are important indicators for evaluating their application performance. Among them, strength, stiffness, fatigue life and impact performance are the focus of mechanical property evaluation. Through tensile tests, bending tests, impact tests and other methods, the mechanical properties of composite materials under different loads can be determined. Mechanical property test specimens can be prepared by compression molding. Compression molding is one of the most commonly used composite material molding processes. In the compression molding process, the prepreg of the composite material is placed in a mold, and then high temperature and high pressure are applied to melt the resin in the prepreg and fully infiltrate the fibers to finally form a cured composite material.
[0003] During the compression molding process, since the gas in the mold cannot be discharged, the fibers of the final compression molded composite material tend to be twisted and the fibers tend to deviate, which has a great impact on the mechanical properties test results. Therefore, this application provides a compression molding mold with exhaust gas. Utility Model Content
[0004] The utility model aims to provide a compression molding die capable of exhausting air, aiming to solve the problems raised by the background technology.
[0005] The utility model is implemented in this way, comprising a mold bottom plate, wherein the mold bottom plate is provided with a glue overflow groove;
[0006] A limit frame, wherein the limit frame is installed above the lower bottom plate of the mold;
[0007] A mold upper cover plate, wherein the mold upper cover plate is installed above the limit frame;
[0008] The heating plate is arranged at the bottom of the lower bottom plate of the mold and is used to heat the mold.
[0009] Furthermore, the inner cavity size of the intermediate mold of the limiting frame is 300mm×300mm.
[0010] Furthermore, the length, width and depth of the glue overflow groove are 300 mm, 15 mm and 3 mm respectively.
[0011] Furthermore, guide columns are fixedly connected to the four sides of the lower bottom plate of the mold, and guide holes are opened at corresponding positions around the four sides of the limit frame, and the guide columns and guide holes are adapted to each other.
[0012] Furthermore, connecting components are provided on both sides of the limit frame for fixedly connecting the limit frame and the lower base plate of the mold, and the connecting components include a limit block, which is configured to be in a hook shape, and movable grooves are symmetrically provided on both sides of the limit frame, one end of the limit block passes through the through groove provided on the side of the limit frame and extends into the movable groove, and a slot that can be plugged into the other end of the limit block is provided on the side of the lower base plate of the mold.
[0013] Furthermore, an iron block is fixedly installed on the inner wall of the movable groove, and a magnetic block is fixedly installed in the middle of the end of the limit block in an inlaid manner, and the magnetic block can be adsorbed with the iron block.
[0014] Furthermore, a shift rod is fixedly connected to the top of the limit block.
[0015] Furthermore, a rubber sleeve is fixedly mounted on the inner wall of the slot.
[0016] Compared with the prior art, the utility model sets a glue overflow groove to make the resin flow along the fiber direction as much as possible during the molding process, thereby improving the influence of gas that cannot be discharged during the molding process on the fiber tendency after molding, and improving the fiber distortion of the final molded composite material to a certain extent. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 It is a schematic diagram of the overall structure of a ventilated compression molding die provided by the utility model;
[0018] Figure 2 It is a schematic diagram of a mold upper cover plate of a venting compression molding mold provided by the utility model;
[0019] Figure 3 It is a schematic diagram of a limit frame of a venting compression molding die provided by the utility model;
[0020] Figure 4 This is a schematic diagram of a lower bottom plate of a venting compression molding die provided by the utility model;
[0021] Figure 5 It is a cross-sectional view of a ventilated compression molding die provided by the utility model.
[0022] The figure numerals involved in the above drawings are: 1. mold upper cover plate; 2. limit frame; 3. mold lower base plate; 4. glue overflow groove; 5. heating plate; 6. connecting component; 61. movable groove; 62. through groove; 63. limit block; 64. slot; 65. iron block; 66. magnetic block; 67. lever; 68. rubber sleeve; 7. guide hole; 8. guide column. DETAILED DESCRIPTION
[0023] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.
[0024] The implementation of the utility model is described in detail below in conjunction with a specific embodiment, including a mold bottom plate 3, and a glue overflow groove 4 is opened on the mold bottom plate 3;
[0025] A limit frame 2, wherein the limit frame 2 is installed above the lower bottom plate 3 of the mold;
[0026] A mold upper cover plate 1, wherein the mold upper cover plate 1 is installed above the limit frame 2;
[0027] A heating plate 5 is arranged at the bottom of the mold lower bottom plate 3 and is used to heat the mold;
[0028] The inner cavity size of the middle mold of the limiting frame 2 is 300mm×300mm;
[0029] The length, width and depth of the overflow groove 4 are 300 mm, 15 mm and 3 mm respectively;
[0030] During operation, the limiting frame 2 is first installed on the top of the lower base plate 3 of the mold, and the prepreg is laid along the fiber direction perpendicular to the overflow glue groove 4, so that the resin can flow along the fiber direction as much as possible during the molding process and flow into the overflow glue groove 4. Then, the mold upper cover plate 1 is placed in the mold limiting frame 2, and the mold is heated by the heating plate 5. A high temperature and high pressure environment is formed inside the mold to melt the resin in the prepreg and fully infiltrate the fibers. The excess resin flows into the overflow glue groove 4 along the fiber direction, and finally the temperature is reduced to form a solidified composite material after cooling.
[0031] The guide posts 8 are fixedly connected to the four sides of the mold bottom plate 3, and the guide holes 7 are opened at the corresponding positions around the four sides of the limit frame 2, and the guide posts 8 and the guide holes 7 are adapted to each other; during operation, the guide posts 8 and the guide holes 7 cooperate with each other so that the limit frame 2 can be quickly and accurately installed at the specified position on the mold bottom plate 3.
[0032] Connecting components 6 are provided on both sides of the limit frame 2 for fixedly connecting the limit frame 2 and the lower base plate 3 of the mold. The connecting components 6 include limit blocks 63, which are arranged in a hook shape. Active grooves 61 are symmetrically provided on both sides of the limit frame 2. One end of the limit block 63 passes through the through groove 62 provided on the side of the limit frame 2 and extends into the active groove 61. A slot 64 capable of being plugged into the other end of the limit block 63 is provided on the side of the lower base plate 3 of the mold. When working, the limit block 63 is pushed to move to both sides, and then the limit frame 2 is installed at a specified position on the lower base plate 3 of the mold, and then the limit block 63 is slid toward the middle direction so that the bottom end of the limit block 63 is plugged into the slot 64 on the lower base plate 3 of the mold, thereby connecting the limit frame 2 and the lower base plate 3 of the mold together so as to quickly install and disassemble the limit frame 2.
[0033] An iron block 65 is fixedly installed on the inner wall of the movable groove 61, and a magnetic block 66 is fixedly installed in the middle of the end of the limit block 63. The magnetic block 66 can be adsorbed with the iron block 65; when working, the movement of the limit block 63 is limited to prevent the end of the limit block 63 from detaching from the slot 64, making the connection more stable.
[0034] A lever 67 is fixedly connected to the top of the limit block 63 to move the limit block 63 during operation.
[0035] A rubber sleeve 68 is fixedly mounted on the inner wall of the slot 64; during operation, when the end of the limit block 63 is inserted into the slot 64, the rubber sleeve 68 is squeezed and deformed, so that the limit frame 2 and the lower bottom plate 3 of the mold fit more closely.
[0036] The same or similar numbers in the drawings of this embodiment correspond to the same or similar parts; in the description of the present utility model, it should be understood that if the terms "upper", "lower", "left", "right" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the drawings, it is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and cannot be understood as limitations on this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.
[0037] Reference Figure 1-5 As shown, it is a preferred embodiment provided by the utility model.
[0038] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.
Claims
1. A ventilated compression molding die, characterized in that: It comprises a mold bottom plate (3), and a glue overflow groove (4) is provided on the mold bottom plate (3); A limit frame (2), wherein the limit frame (2) is installed above the lower bottom plate (3) of the mold; A mold upper cover plate (1), wherein the mold upper cover plate (1) is installed above the limiting frame (2); A heating plate (5) is arranged at the bottom of the lower base plate (3) of the mold and is used to heat the mold.
2. The exhaustable compression molding die according to claim 1, characterized in that: The inner cavity size of the middle mold of the limiting frame (2) is 300mm×300mm.
3. The exhaustable compression molding die according to claim 2, characterized in that: The length, width and depth of the glue overflow groove (4) are 300 mm, 15 mm and 3 mm respectively.
4. The exhaustable compression molding die according to claim 3, characterized in that: The four sides of the lower bottom plate (3) of the mold are fixedly connected with guide columns (8), and the four sides of the limit frame (2) are provided with guide holes (7) at corresponding positions, and the guide columns (8) and the guide holes (7) are adapted to each other.
5. The exhaustable compression molding die according to claim 4, characterized in that: Connecting components (6) are provided on both sides of the limit frame (2) for fixedly connecting the limit frame (2) and the lower base plate (3) of the mold. The connecting components (6) include a limit block (63) which is arranged in a hook shape. Active grooves (61) are symmetrically provided on both sides of the limit frame (2). One end of the limit block (63) passes through a through groove (62) provided on the side of the limit frame (2) and extends into the active groove (61). A slot (64) capable of being plugged into the other end of the limit block (63) is provided on the side of the lower base plate (3) of the mold.
6. The exhaustable compression molding die according to claim 5, characterized in that: An iron block (65) is fixedly mounted on the inner wall of the movable groove (61), and a magnetic block (66) is fixedly mounted in an inlaid manner in the middle of the end of the limit block (63), and the magnetic block (66) can be adsorbed onto the iron block (65).
7. The exhaustable compression molding die according to claim 6, characterized in that: The top of the limit block (63) is fixedly connected with a shifting rod (67).
8. The exhaustable compression molding die according to claim 7, characterized in that: A rubber sleeve (68) is fixedly mounted on the inner wall of the slot (64).