Forming tool for inner molded surface of composite air duct part

Abstract

The utility model discloses an inner molded surface forming tool for a composite air duct part, which is characterized in that a die main body comprises a die split body a, a die split body b and a die split body c, the die split body a and the die split body b are vertically arranged in parallel to form an air duct straight pipe section inner die, and a transverse straight plate a extending from the bottom of the die split body a and a transverse straight plate b extending from the bottom of the die split body b are connected with a workbench through bolts; the mold body c is transversely arranged on the top of the mold body a and the top of the mold body b to form an air duct bent pipe section inner mold, the mold body c is connected with the mold body b forming the inner side of an air duct through bolts, the outer end of the mold body c extends out of a vertical straight plate, prepreg is laid on the surface of the mold body to form an air duct part, and the air duct part is formed. The bolt serves as a force exerting piece to drive the die body a, the die body b and the die body c to be taken out of a forming part cavity. The part formed by adopting the inner molded surface as the tool surface can ensure that the inner molded surface of the air duct is consistent with a digital model, so that the tedious repairing procedure after the part is formed is reduced, the part quality is ensured, and the production efficiency is improved.

Description

Technical Field

[0001] The utility model relates to a composite part molding tool, in particular to a composite air duct part molding tool. Background Art

[0002] Faced with the complex structure of current duct composite parts, the traditional method of using the outer surface as the tooling surface is often used in the molding process. Although the parts are easy to demold after molding, defects such as wrinkles, depressions, and nodules will inevitably appear on the inner surface of the duct. These defects directly affect the quality of the inner surface of the duct and the gas flow performance, thereby increasing the burden of subsequent tedious and limited repair work. For example, the wrinkles on the inner surface need to be ground, the depressions need to be repaired with corresponding repair glue, and the nodules need to be ground off little by little with tools. This is time-consuming and labor-intensive and cannot achieve the smooth and beautiful inner surface of the duct. In addition, the quality of the inner surface of the duct and the consistency between the digital model are of great significance to improving the overall performance of duct parts and extending their service life. Utility Model Content

[0003] Purpose of the utility model: The purpose of this application is to provide a composite duct part forming tool, which uses the inner surface of the duct to form the parts with high precision and efficiency, and improves production efficiency and quality level.

[0004] Technical solution: A composite air duct part forming tool, including a mold body and a workbench, the mold body including mold split a, mold split b, and mold split c, the mold split a and the mold split b are vertically and parallelly arranged to form an inner mold of the straight pipe section of the air duct, the horizontal straight plate a extending from the bottom of the mold split a and the horizontal straight plate b extending from the bottom of the mold split b are both connected to the workbench by bolts, the mold split c is horizontally arranged on the top of the mold split a and the mold split b to form an inner mold of the curved pipe section of the air duct, the mold split c is bolted to the mold split b forming the inner side of the straight pipe section of the air duct, a vertical straight plate extends from the outer end of the mold split c, the outer side surface of the mold body between the horizontal straight plate a, the horizontal straight plate b and the vertical straight plate is a molding surface, prepreg is laid on the molding surface and molded to form an air duct part, and when demolding, the bolts are used as traction members to drive the mold split a, the mold split b, and the mold split c to be taken out of the air duct part cavity.

[0005] Working principle: The mold body is composed of three mold parts, and prepreg is laid on its outer surface. The horizontal straight plate a and the horizontal straight plate b form the air outlet on one side of the air duct, and the vertical straight plate forms the air outlet on one side of the air duct to form the air duct parts. When the part is formed, it is demoulded. The mold parts a, mold parts b and mold parts c are driven to be taken out of the part cavity through detachable connecting bolts. This kind of mold parts constitute the mold body in the air duct cavity and the step-by-step demoulding method, which is conducive to the forming of the inner surface of the air duct parts and reduces the deformation and damage of the parts during the demoulding process, thereby improving the yield rate.

[0006] Furthermore, mold segment C is aligned with the tops of mold segments A and B via a sloped surface that slopes downward toward the exit of the air duct bend. During demolding, mold segment C is preferentially removed. This helps maintain the structure of the entire molded air duct component. Furthermore, the sloped surface and its orientation facilitate the removal of mold segment C during demolding, reducing the risk of component damage and simplifying the demolding process.

[0007] Furthermore, the mold parts a and b are arranged parallel to each other in the thickness direction of the straight section of the air duct, and the two parts are joined by an inclined surface. The width of mold parts a and b is set to the straight section of the air duct. During demolding, mold part c is demolded, or mold part a or mold part b is demolded first, which is beneficial to maintaining the structure of the entire molded air duct part. The setting of the inclined surface and its direction facilitates the release of mold part a or mold part b during the demolding process, and the order of release of mold parts a and mold part b can be achieved by setting the direction of the inclined surface.

[0008] Furthermore, the inclined surface fitted between the mold part a and the mold part b is inclined downward toward the inner side of the straight pipe section of the air duct. After the mold part c is ejected, the mold part b is removed from the workbench, driving the part to separate from the mold part a. The mold part a remains on the workbench and is ejected relative to the part. Finally, the mold part b can be taken out of the part. This demoulding sequence can ensure that the part can be ejected smoothly, which is conducive to maintaining the structure of the entire molded air duct part and maintaining its integrity and quality.

[0009] Furthermore, the contour of the molding surface is ±0.2mm, and the roughness is no more than Ra1.6. The contour requirement ensures the shape accuracy of the molding surface, and the roughness requirement ensures the smoothness of the molding surface, which corresponds to the air duct parts and ensures the quality of the inner surface of the air duct parts.

[0010] Furthermore, an R angle transition is set between the molding surface and the horizontal straight plate a, the horizontal straight plate b, and the vertical straight plate. The R angle is ±0.2mm. The design of the R angle enables a smooth transition between the molding surface and the horizontal straight plate a, the horizontal straight plate b, and the vertical straight plate. The prepreg is laid here, which helps to improve the structural performance of the air outlet of the air duct parts.

[0011] Furthermore, the workbench is provided with a hoisting point at each of the four corners of the tabletop, so that the tooling can maintain balance during hoisting, reducing the risk of tilting or damage due to center of gravity shift, and facilitating the subsequent addition of lifting rings for transportation.

[0012] Beneficial effects: The advantages of the present invention are: by designing the mold body according to the inner surface of the composite air duct part, the prepreg is laid on the mold body to form the air duct part, the molding surface of the mold body ensures the quality of the inner surface of the air duct, and can ensure that the digital model of the inner surface of the air duct and the mold body are consistent, and also reduces the quality problems and tedious repair procedures after the air duct parts are molded with the outer surface. The design of the mold body helps to demold and maintain the structure of the entire molded air duct part during demolding, thereby reducing production costs and improving production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the overall structure of the utility model;

[0014] Figure 2 for Figure 1 Side view of

[0015] Figure 3 This is a schematic diagram of the structure of the mold split C during demoulding of the utility model;

[0016] Figure 4 This is a schematic diagram of the structure of the utility model when the mold part a and the mold part b are separated;

[0017] Figure 5 This is a schematic diagram of the structure of the mold part B during demoulding of the utility model. DETAILED DESCRIPTION

[0018] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0019] A composite air duct parts forming tool, as shown in the attached Figures 1-2 As shown, it includes a mold body 1 and a workbench 2. The workbench 2 is constructed of metal and consists of a tabletop and a base. A foot pad is provided at each of the four corners of the bottom of the base. When placed on the ground, it ensures the stability of the workbench and prevents it from sliding or shifting during use. A lifting point is provided at each corner of the tabletop to ensure that the tooling can maintain balance during lifting, reduce the risk of tilting or damage caused by the center of gravity shift, and facilitate the addition of lifting rings for transportation later.

[0020] Combined with attachment Figure 2As shown, the mold body 1 is composed of a mold split a101, a mold split b102, and a mold split c103, wherein the mold split a101 and the mold split b102 are arranged vertically to form the inner mold of the air duct straight pipe section, and the mold split a101 and the mold split b102 are arranged in parallel in the thickness direction of the air duct straight pipe section, that is, the width of both is adapted to the inner width of the air duct straight pipe section, and the two are fitted with an inclined surface, which can be inclined toward the outside of the air duct straight pipe section and downward, or toward the inside of the air duct straight pipe section and downward (that is, the direction shown in the figure is the best direction of the inclined surface). Through the design of this inclined surface and its direction, the ejection order of the mold split a101 and the mold split b102 during demoulding is related, and the inclined surface helps each mold split to eject during the demoulding process. Demolding reduces the risk of parts damage and simplifies the demoulding process; a horizontal straight plate a104 is extended from the bottom of the mold split a101, and a horizontal straight plate b105 is extended from the bottom of the mold split b102. Several bolt holes are left on the horizontal straight plates a104 and b105, which are convenient for installing the horizontal straight plates a104 and b105 on the table top of the workbench 2 through bolts. On the one hand, the mold split a and the mold split b are respectively fixed to the table top of the workbench through the horizontal straight plates a and b. The horizontal straight plates a104 and b105 increase the contact area between the mold split a101, the mold split b102 and the workbench 2. On the other hand, the horizontal straight plates a and b will serve as the bearing surfaces and the force surfaces during demoulding.

[0021] Mold split c is horizontally arranged on the top of mold split a and mold split b to form the inner mold of the duct bend section. Mold split c103 is fitted with the top of mold split a101 and mold split b102 with an inclined surface inclined downward toward the outlet of the duct bend section. When the entire part is demolded, mold split c is removed first. Such a demolding order is conducive to maintaining the structure of the entire molded duct part and ensuring the shape of the final molded part. Mold split c103 is connected to mold split b102 forming the inner side of the duct straight section with bolts, and a vertical straight plate 106 extends from the outer end of mold split c103.

[0022] The outer surface of the mold body 1 between the horizontal straight plate a104, horizontal straight plate b105, and vertical straight plate 106 is the molding surface. The molding surface has a profile of ±0.2mm and a roughness of no greater than Ra1.6. Prepreg is laid on the molding surface and molded to form the air duct component. The molding surface and the horizontal straight plate a104, horizontal straight plate b105, and vertical straight plate 106 are provided with an R angle transition of ±0.2mm. The R angle design ensures a smooth transition between the molding surface and the horizontal straight plate a104, horizontal straight plate b105, and vertical straight plate 106. Laying the prepreg here helps improve the structural performance of the air duct component at the air outlet. The profile requirement ensures the shape accuracy of the molding surface, ensuring that the inner profile of the air duct is consistent with the digital model of the mold body. The roughness requirement ensures the smoothness of the molding surface. Corresponding to the air duct component, it can ensure the quality of the inner profile of the air duct component and make the surface of the component more flat and smooth.

[0023] When demoulding, Figure 3 As shown, first, the bolts connecting the mold split c103 and the mold split b102 are screwed out, and the bolts push the mold split c103 out of the air duct component cavity. During the pushing process, it is necessary to ensure that the vertical straight plate 106 is pushed out horizontally. Under the joint action of the inclined surface, the mold split c is pushed out smoothly, and the mold split c103 is preferentially removed, which is conducive to maintaining the structure of the entire molded air duct component; when the mold split c103 is completely separated from the air duct component cavity, combined with the attached Figures 4-5 As shown, the bolts fixing the horizontal straight plate b105 are then unscrewed, and the mold split b and the air duct part are moved vertically upward as a whole and removed from the workbench, so that the mold split b102 and the part are lifted horizontally and separated from the mold split a101. The mold split a101 remains on the workbench and is removed from the part. Finally, the mold split b102 can be taken out of the part. This demolding sequence can ensure that the part can be smoothly demolded, which is conducive to maintaining the structure of the entire molded air duct part and maintaining its integrity and quality.

[0024] The composite air duct part molding tool of the present application designs a mold body according to the inner surface of the composite air duct part, and lays prepreg on the mold body to mold the air duct part. The molding surface of the mold body ensures the quality of the inner surface of the air duct, and can ensure that the digital model of the inner surface of the air duct and the mold body are consistent. It also reduces the quality problems and tedious repair processes after the air duct part is molded with the outer surface. The mold body adopts a split design, and the fitting bevel direction of each mold split is designed, and the demolding order of each mold split is associated, which helps to demold and maintain the structure of the entire molded air duct part during demolding, thereby reducing production costs and improving production efficiency.

Claims

1. A tool for forming the inner surface of a composite air duct part, characterized by: The invention comprises a mold body (1) and a workbench (2), wherein the mold body (1) comprises a mold split a (101), a mold split b (102), and a mold split c (103), wherein the mold split a (101) and the mold split b (102) are arranged vertically and in parallel to form an inner mold of a straight pipe section of an air duct, wherein a horizontal straight plate a (104) extending from the bottom of the mold split a (101) and a horizontal straight plate b (105) extending from the bottom of the mold split b (102) are both connected to the workbench (2) by bolts, and the mold split c (103) is arranged horizontally on the top of the mold split a (101) and the mold split b (102). The above constitutes the inner mold of the air duct bend section, the mold split c (103) and the mold split b (102) constituting the inner side of the air duct straight section are connected by bolts, the outer end of the mold split c (103) extends out a vertical straight plate (106), the outer surface of the mold main body (1) between the horizontal straight plate a (104), the horizontal straight plate b (105) and the vertical straight plate (106) is a molding surface, the prepreg is laid on the molding surface and molded to form the air duct part, and when demoulding, the bolts are used as a force member to drive the mold split a (101), the mold split b (102) and the mold split c (103) to be taken out from the air duct part cavity.

2. The inner surface forming tool for composite air duct parts according to claim 1, characterized in that: The mold part c (103) is fitted with the top of the mold part a (101) and the mold part b (102) with an inclined surface that is inclined downward toward the outlet of the air duct bend section.

3. The inner surface forming tool for composite air duct parts according to claim 1, characterized in that: The mold part a (101) and the mold part b (102) are arranged in parallel in the thickness direction of the straight pipe section of the air duct, and the two are fitted together with an inclined surface.

4. The inner surface forming tool for composite air duct parts according to claim 3, characterized in that: The inclined surface is inclined downward toward the inner side of the straight pipe section of the air duct.

5. The inner surface forming tool for composite air duct parts according to claim 1, characterized in that: The contour of the forming surface is ±0.2 mm, and the roughness is no greater than Ra1.

6.

6. The inner surface forming tool for composite air duct parts according to claim 1, characterized in that: The molding surface is provided with an R angle transition with the transverse straight plate a (104), the transverse straight plate b (105), and the vertical straight plate (106), and the R angle is ±0.2 mm.

7. The inner surface forming tool for composite air duct parts according to claim 1, characterized in that: The workbench (2) is provided with a hoisting point at each of the four corners of the tabletop.

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