Prepreg laying tool

Abstract

The utility model provides a prepreg laying tool which comprises a base and a positioning assembly, the base is provided with a working space used for laying prepregs, and the positioning assembly is arranged in the working space and used for positioning the prepregs. According to the tool, the laying of the prepreg and the prepressing forming of the product are separately carried out, the prepreg compression molding product with a complex structure provides profile support and positioning of an internal embedded part in the laying process of the internal embedded part such as the prepreg and a metal part, and after the laying is completed, the prepressing forming of the product is completed. And the preformed body is installed in a forming mold to enter a compression molding process. According to the operation, the mold occupying time of the forming mold can be greatly shortened, the utilization rate of the forming mold is greatly improved, and the effect of improving the forming efficiency is obvious especially for a product with one mold and multiple cavities.

Description

Technical Field

[0001] The utility model relates to the technical field of composite materials, in particular to a prepreg laying tooling. Background Art

[0002] The skin is a fiber-reinforced resin-based composite material formed by prepreg. The laying and pre-compaction of the prepreg are usually carried out by manual laying and vacuum pre-compaction.

[0003] At present, most of the prepreg compression molding products are directly formed by laying prepreg, metal parts, sandwich cores and other embedded parts layer by layer in the molding die to form a preform, and then entering the compression molding process. According to this method, the mold occupation time is long and the mold utilization rate is low during the product molding process, thus increasing the product molding cycle. Summary of the Utility Model

[0004] Aiming at the deficiencies of the existing technology, the purpose of the utility model is to provide a prepreg laying tooling, which solves the problems that the prepreg compression molding products in the existing technology directly lay prepreg, metal parts, sandwich cores and other embedded parts layer by layer in the molding die, resulting in long mold occupation time and low mold utilization rate during the product molding process.

[0005] In order to achieve the above purpose, the utility model provides the following technical solution: a prepreg laying tooling, including a base and a positioning component. A working space for laying prepreg is arranged on the base, and the positioning component is arranged at the working space for positioning the prepreg.

[0006] The positioning component includes a first positioning structure for positioning the outer contour of the prepreg and a second positioning structure for positioning the notch on the prepreg.

[0007] The first positioning structure includes a first positioning surface for positioning the left and right directions of the outer contour of the prepreg and a second positioning surface for positioning the front and back directions of the outer contour of the prepreg.

[0008] A groove is formed on the upper surface of the base, and the inner side wall of the groove and the second positioning surface enclose the working space.

[0009] The first positioning surface is the inner side walls of the two opposite sides of the groove.

[0010] First positioning blocks are arranged on both opposite sides of the groove, and the second positioning surface is the inner side wall of the first positioning block.

[0011] Receiving grooves are formed on both opposite sides of the groove, the groove is communicated with the receiving grooves, the depth of the receiving grooves is greater than the depth of the groove, and the first positioning blocks are detachably embedded in the receiving grooves.

[0012] The second positioning structure includes a second positioning block and a positioning pin. The second positioning block is detachably installed at the bottom of the working space corresponding to the upper notch position of the prepreg through the positioning pin.

[0013] A lifting member for moving the first positioning block in or out of the receiving groove is arranged on the first positioning block. The first positioning block is installed in the receiving groove through fastening screws.

[0014] The lifting member is a lifting screw. The lifting screw penetrates through the first positioning block and is threadedly connected thereto.

[0015] Compared with the prior art, the above technical solution brings the following technical effects:

[0016] By separating the laying of the prepreg from the pre-pressing of the product with this tooling, for prepreg compression molding products with complex structures, during the laying process of internal embedded parts such as prepregs and metal parts, it provides the contour support and the positioning of internal embedded parts. After the laying is completed, the preform is installed into the molding die to enter the compression molding process. According to this operation, the mold occupation time of the molding die can be significantly shortened, and the utilization rate of the molding die can be greatly improved. Especially for products with multiple cavities in one mold, it has an obvious effect on improving the molding efficiency.

[0017] In the present utility model, by disassembling the first positioning block, the preform can be conveniently and quickly taken out, further improving the molding efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following will briefly introduce the drawings required to be used in the embodiments. It should be understood that the following drawings only show some embodiments of the present utility model, and therefore should not be regarded as limiting the scope. For those of ordinary skill in the art, without creative efforts, other relevant drawings can also be obtained based on these drawings.

[0019] Figure 1 It is a schematic structural diagram of the present utility model with prepreg laid;

[0020] Figure 2 It is a schematic structural diagram of the present utility model without prepreg laid;

[0021] Figure 3 It is a schematic structural diagram of the receiving groove of the present utility model;

[0022] Figure 4 It is a schematic structural diagram of the prepreg of the present utility model;

[0023] MAIN SYMBOL DESCRIPTION OF COMPONENTS:

[0024] 1. Base; 2. Prepreg; 21. Notch; 3. Working space; 4. First positioning structure; 41. First positioning surface; 42. Second positioning surface; 5. First positioning block; 6. Second positioning structure; 61. Second positioning block; 62. Positioning pin; 7. Receiving groove; 8. Lifting member; 9. Fastening screw. Detailed implementation mode

[0025] The embodiments of the present invention will be described in detail below. The examples of the embodiments are shown in the drawings, where the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary and are only used to explain the present invention and should not be construed as a limitation of the present invention.

[0026] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying 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 a limitation of the present invention.

[0027] In addition, the terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, "a plurality" means two or more unless otherwise specifically defined.

[0028] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed", etc. should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the internal communication of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0029] In the present utility model, unless otherwise clearly defined and limited, the first feature being "on" or "under" the second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may mean that the first feature is directly above or obliquely above the second feature, or merely indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature being "under", "beneath" and "underneath" the second feature may mean that the first feature is directly below or obliquely below the second feature, or merely indicates that the horizontal height of the first feature is less than that of the second feature.

[0030] In the prior art, the forming of prepreg molding products mostly directly lays prepreg, metal parts, sandwich and other embedded parts layer by layer in a forming mold to form a preform, and then enters the compression molding process. Since the mold is occupied during the laying process, the product forming cycle is long and the forming efficiency is low. In the present invention, the prepreg laying and compression molding are divided into two sets of equipment and two processes. During the compression molding process of the previous prepreg, the laying of the next prepreg can be carried out simultaneously. The two processes are carried out separately without interference, thereby greatly improving the forming efficiency.

[0031] As Figures 1 to 4 shown, the prepreg laying tooling of this embodiment includes a base 1 and a positioning assembly. A working space 3 for laying the prepreg 2 is provided on the base 1, and the positioning assembly is arranged at the working space 3 for positioning the prepreg 2.

[0032] Specifically, the base 1 is used to support the outer contour of the prepreg 2. The laying process is carried out in the working space 3. During the laying process, the prepreg 2 is positioned by the positioning assembly, so that the laying and placement positions of multiple layers of prepreg 2 are accurate, thereby overcoming the unqualified forming products caused by inaccurate laying and placement positions.

[0033] In one preferred embodiment, the positioning assembly includes a first positioning structure 4 for positioning the outer contour of the prepreg 2, and a second positioning structure 6 for positioning the notch 21 on the prepreg 2.

[0034] During the laying process of the prepreg 2, since the number of layers of the prepreg 2 is relatively large (more than 40 layers), the outer contour of the upper prepreg 2 is smaller than that of the lower prepreg 2. When laying the upper prepreg 2, the notch 21 on the prepreg 2 also needs to be positioned by the second positioning structure 6.

[0035] In one preferred embodiment, the first positioning structure 4 includes a first positioning surface 41 for positioning the left-right direction of the outer contour of the prepreg 2, and a second positioning surface 42 for positioning the front-back direction of the outer contour of the prepreg 2. The two vertical first positioning surfaces 41 in the front-back direction and the two vertical second positioning surfaces 42 in the left-right direction enclose a region with a size matching the outer contour of the prepreg 2. The heights of the two first positioning surfaces 41 and the two second positioning surfaces 42 are slightly higher than the height of the outer contour of the prepreg 2, which is beneficial for laying the prepreg 2.

[0036] In one preferred embodiment, a groove is formed on the upper surface of the base 1, and the inner sidewall of the groove and the second positioning surface 42 enclose a working space 3.

[0037] In this embodiment, the working space 3 is formed by sinking the upper surface of the base 1 to form a groove. In other embodiments, the working space 3 can also be a boss provided on the upper surface of the base 1, and the boss encloses a region with a size matching the outer contour of the prepreg 2, and the prepreg 2 is laid in this region.

[0038] In one preferred embodiment, the first positioning surface 41 is the inner sidewalls of the two opposite sides of the groove.

[0039] In one preferred embodiment, first positioning blocks 5 are installed on both opposite sides of the groove, and the second positioning surface 42 is the inner sidewall of the first positioning block 5.

[0040] In one preferred embodiment, receiving grooves 7 are formed on both opposite sides of the groove, the groove is communicated with the receiving grooves 7, the depth of the receiving grooves 7 is greater than the depth of the groove, and the first positioning blocks 5 are detachably embedded in the receiving grooves 7. After the first positioning blocks 5 are placed in the receiving grooves 7, the heights of the first positioning blocks 5 are flush with the upper surface of the base 1.

[0041] In one preferred embodiment, the second positioning structure 6 includes a second positioning block 61 and a positioning pin 62, and the second positioning block 61 is detachably installed at the bottom of the working space 3 corresponding to the position of the upper notch 21 of the prepreg 2 through the positioning pin 62.

[0042] Specifically, the second positioning block 61 is located near one of the first positioning blocks 5 in the groove. Four positioning pin holes are correspondingly formed on the second positioning block 61 and the groove. The second positioning block 61 is installed in the groove through two or four positioning pins 62. The size of the second positioning block 61 matches the size of the notch 21 on the prepreg 2, and the second positioning block 61 is clamped in the notch 21 for positioning it.

[0043] In one preferred embodiment, a lifting member 8 for moving the first positioning block 5 out of or into the receiving groove 7 is installed on the first positioning block 5, and the first positioning block 5 is installed in the receiving groove 7 through a fastening screw 9.

[0044] In a preferred embodiment, the lifting member 8 is a lifting screw, and the lifting screw penetrates through the first positioning block 5 and is threadedly connected thereto.

[0045] During specific laying, first, the two first positioning blocks 5 are installed in the receiving groove 7 through fastening screws 9 and locked. The second positioning block 61 is installed in the groove through two positioning pins 62. Then, the prepreg 2 is started to be laid. The lower-layer prepreg 2 can be positioned through the first positioning surface 41 and the second positioning surface 42, and the upper-layer prepreg 2 can be positioned through the second positioning block 61. When laying the metal part, first, the two positioning pins 62 on the second positioning block 61 are removed, and the second positioning block 61 is taken out upward from the notch 21. Then, the positioning pins 62 are inserted into the preset pin holes on the metal part to fix the metal part. Then, the prepreg 2 is continuously laid upward. At this time, the metal part is equivalent to the second positioning block 61 and can position the prepreg 2 laid later. After laying is completed, the positioning pins 62 on the metal part are taken out, the fastening screws 9 are removed, and the lifting screw is rotated to raise the first positioning block 5 out of the receiving groove 7. At this time, the first positioning block 5 creates a space for taking the preform. Finally, the preform is installed into the forming die to enter the compression molding process.

[0046] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples", etc. means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0047] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments as long as they meet the purpose of the present invention and should be within the scope of protection required by the present invention. For example: different combinations of specific embodiments, different combinations of different distinguishing technical features.

Claims

1. A prepreg layup tooling, characterized in that, It includes a base (1) and a positioning component. A working space (3) for laying prepreg (2) is provided on the base (1), and the positioning component is arranged at the working space (3) for positioning the prepreg (2).

2. The prepreg layup tooling according to claim 1, wherein, The positioning component includes a first positioning structure (4) for positioning the outer contour of the prepreg (2) and a second positioning structure (6) for positioning the notch (21) on the prepreg (2).

3. The prepreg layup tooling according to claim 2, characterized in that, The first positioning structure (4) includes a first positioning surface (41) for positioning the left - right direction of the outer contour of the prepreg (2) and a second positioning surface (42) for positioning the front - back direction of the outer contour of the prepreg (2).

4. The prepreg layup tooling according to claim 3, characterized in that, A groove is formed on the upper surface of the base (1), and the inner side wall of the groove and the second positioning surface (42) enclose the working space (3).

5. The prepreg layup tooling according to claim 4, wherein, The first positioning surface (41) is the inner walls of two opposite sides of the groove.

6. The prepreg layup tooling according to claim 4, wherein First positioning blocks (5) are arranged on two opposite sides in the groove, and the second positioning surface (42) is the inner side wall of the first positioning block (5).

7. The prepreg layup tooling according to claim 6, characterized in that, Receiving grooves (7) are formed on two opposite sides of the groove. The groove is communicated with the receiving groove (7). The depth of the receiving groove (7) is greater than the depth of the groove. The first positioning block (5) is detachably embedded in the receiving groove (7).

8. The prepreg layup tooling according to claim 2, characterized in that, The second positioning structure (6) includes a second positioning block (61) and a positioning pin (62). The second positioning block (61) is detachably installed at the bottom of the working space (3) corresponding to the position of the notch (21) on the prepreg (2) through the positioning pin (62).

9. The prepreg layup tooling according to claim 6, wherein A lifting member (8) for moving the first positioning block (5) in or out of the receiving groove (7) is arranged on the first positioning block (5). The first positioning block (5) is installed in the receiving groove (7) through a fastening screw (9).

10. The prepreg layup tooling according to claim 9, characterized in that, The lifting member (8) is a lifting screw, and the lifting screw penetrates through the first positioning block (5) and is thread - connected thereto.

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