Pre-pressing device

Abstract

The invention discloses a pre-pressing device, and relates to the technical field of composite material compounding and multilayer fabric manufacturing, the pre-pressing device comprises a base, an inner mold, a fixing piece and a plurality of shaping molds, the inner mold is arranged on the base; the fixing piece is connected with the base and the inner mold; each shaping mold comprises a fixing part and a plurality of outer molds, the outer molds are annularly arranged outside the inner mold, the outer molds and the inner mold are arranged at intervals, and one end of each outer mold is detachably connected with the fixing part. According to the technical scheme, the multiple shaping molds are arranged, the distances between the outer molds and the inner molds of all the shaping molds are set to be different, the multi-layer fabric can be pre-pressed in a layered mode, and compared with a traditional direct pre-pressing mode, the pre-pressing efficiency is greatly improved. The problems of interlayer slippage, local wrinkles, local yarn breakage and the like of the fabric can be reduced through layered pre-pressing of the multiple shaping molds, and then the product performance is improved.

Description

Technical Field

[0001] This invention relates to the field of composite material compounding and multilayer fabric manufacturing technology, and particularly to a pre-compression device. Background Technology

[0002] Composite materials often use multi-layered fabrics as raw materials, which are then bonded together to form the final product. To meet performance requirements, there are certain requirements for the weight and density of the final product. In related technologies, multi-layered fabrics are relatively bulky, and the thickness of the multi-layered fabric needs to be greater than the thickness of the final product to meet the weight and density requirements.

[0003] Because the overall shape of the multi-layered fabric is larger than the mold cavity, the multi-layered fabric will be squeezed during the molding process, which will cause problems such as interlayer slippage, local wrinkles, and local yarn damage and breakage, ultimately resulting in a reduction in the local mechanical properties of the product. Summary of the Invention

[0004] The main objective of this invention is to provide a pre-compression device that can reduce problems such as interlayer slippage, local wrinkles, and local yarn breakage during the lamination process of tapered multilayer fabrics by pre-compressing in layers.

[0005] To achieve the above objectives, the pre-compression device proposed in this invention includes: Base; The inner mold is located on the base; A fastener connects the base to the inner mold; Multiple shaping molds, each shaping mold including a fixing part and multiple outer molds, the multiple outer molds are arranged around the inner mold and spaced apart from the inner mold, one end of each of the multiple outer molds is detachably connected to the fixing part, and the other end is detachably connected to the base, and two adjacent outer molds are in contact with each other; When there are multiple shaping molds, the distance between the outer mold and the inner mold of each shaping mold is different, which is used for layered pre-pressing.

[0006] In one embodiment, the base is provided with a mounting groove, and the inner mold is placed in the mounting groove.

[0007] In one embodiment, the inner mold has a flange, which is disposed within the mounting groove.

[0008] In one embodiment, the fastener passes through the base and connects to the flange.

[0009] In one embodiment, the inner mold includes a bearing portion and a support portion connected to the bearing portion. The support portion is disposed on the base, wherein the support portion has a cavity penetrating the support portion, and the bearing portion has a weight-reducing groove communicating with the cavity.

[0010] In one embodiment, flanges are provided at both ends of the outer mold, and the two flanges are respectively connected to the fixing part and the base.

[0011] In one embodiment, the fixing part includes an end cap, and the end cap has a receiving groove on the side facing the outer mold.

[0012] In one embodiment, the pre-compression device further includes an adjustment pad disposed between every two outer molds.

[0013] In one embodiment, the adjusting pad has a handle protruding from the side away from the inner mold.

[0014] In one embodiment, the pre-compression device further includes a handle disposed on the outer wall of the outer mold.

[0015] The technical solution of the present invention, by setting multiple shaping molds and setting the distance between the outer mold and the inner mold of each shaping mold to be different, can pre-press multi-layer fabrics in layers. Compared with the traditional direct pre-pressing mode, the layered pre-pressing by multiple shaping molds can reduce problems such as interlayer slippage, local wrinkles, and local yarn breakage, thereby improving product performance. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0017] Figure 1 A three-dimensional schematic diagram of the pre-compression device provided by the present invention; Figure 2 A cross-sectional schematic diagram of the preloading device provided by the present invention; Figure 3 A plan view of the pre-compression device provided by the present invention; Figure 4 This is a schematic diagram of the adjusting pad in the pre-compression device structure provided by the present invention.

[0018] Explanation of icon numbers: 100. Pre-compression device; 1. Base; 11. Mounting groove; 2. Inner mold; 21. Flanged edge; 22. Bearing part; 23. Support part; 231. Chamber; 24. Weight reduction groove; 3. Fixing part; 4. Shaping mold; 41. Fixing part; 411. End cap; 42. Outer mold; 5. Flange part; 6. Adjusting pad; 7. Handle; 8. Grip.

[0019] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0020] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0021] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0022] Furthermore, the use of terms such as "first" and "second" in this invention is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this invention.

[0023] Composite materials often use multi-layered fabrics as raw materials, which are then bonded together to form the final product. To meet performance requirements, there are certain requirements for the weight and density of the final product. In related technologies, multi-layered fabrics are relatively bulky, and the thickness of the multi-layered fabric needs to be greater than the thickness of the final product to meet the weight and density requirements.

[0024] Because the overall shape of the multi-layered fabric is larger than the mold cavity, the multi-layered fabric will be squeezed during the molding process, which will cause problems such as interlayer slippage, local wrinkles, and local yarn damage and breakage, ultimately resulting in a reduction in the local mechanical properties of the product.

[0025] This invention proposes a pre-compression device, which aims to reduce problems such as interlayer slippage, local wrinkles, and local yarn breakage during the lamination process of tapered multilayer fabrics through pre-forming.

[0026] Please see Figures 1 to 4 In one embodiment of the present invention, the pre-compression device 100 includes a base 1, an inner mold 2, a fixing member 3, and a plurality of shaping molds 4. The inner mold 2 is disposed on the base 1. The fixing member 3 connects the base 1 and the inner mold 2. Each shaping mold 4 includes a fixing part 41 and a plurality of outer molds 42. The plurality of outer molds 42 are arranged around the inner mold 2 and spaced apart from the inner mold 2. One end of each of the plurality of outer molds 42 is detachably connected to the fixing part 41, and the other end is detachably connected to the base 1. Two adjacent outer molds 42 are in contact with each other. The distance between the outer mold 42 and the inner mold 2 of each shaping mold 4 is different, which is used for layered pre-compression.

[0027] The technical solution of the present invention, by setting multiple shaping molds 4, sets the distance between the outer mold 42 and the inner mold 2 of each shaping mold to be different, which can pre-press multi-layer fabrics in layers. Compared with the traditional direct pre-pressing mode, the layered pre-pressing by multiple shaping molds 4 can reduce problems such as interlayer slippage, local wrinkles, and local yarn breakage in the fabric, thereby improving product performance.

[0028] It is worth mentioning that in this embodiment, the multiple shaping molds 4 are arranged separately, which can reduce the friction of the fabric during mold assembly and reduce the breakage of the fabric yarn.

[0029] In some embodiments, the connection between the inner membrane and the base 1 can be a bolt connection for easy replacement; a snap-fit ​​connection for quick installation; or an adhesive connection for stable installation.

[0030] In some embodiments, the detachable connection between the outer mold 42 and the fixing part 41 can be bolted, screwed, or otherwise.

[0031] In one embodiment, the fixing part 41 includes an end cap 411, and the end cap 411 has a receiving groove on the side facing the outer mold 42. Thus, when the outer mold 42 is connected to the fixing part 41, at least a portion of the outer mold 42 can be embedded in the receiving groove, further enhancing the stability of the connection between the outer mold 42 and the fixing part 41. Because the size and shape of the receiving groove are adapted to the embedded portion of the outer mold 42, the shaking and displacement of the outer mold 42 after connection can be effectively limited, allowing the outer mold 42 to better constrain the multi-layered fabric during the pre-forming process.

[0032] It is worth mentioning that the end cap 411 has a through hole. This through hole can be used as an observation hole, allowing the operator to check the internal condition of the outer mold 42, such as the state of the multi-layered fabric during the pre-forming process, and whether there are any problems such as misalignment or wrinkles. Simultaneously, the through hole can also serve as a vent, balancing the air pressure inside and outside the outer mold 42 to prevent pressure differences from affecting the pre-forming effect of the multi-layered fabric.

[0033] In one embodiment, the base 1 is provided with a mounting groove 11, and the inner mold 2 is placed in the mounting groove 11. In this way, the inner mold 2 can be stably supported by the base 1, reducing shaking or displacement during pre-forming operations on multi-layer fabrics.

[0034] It is worth mentioning that the outer wall of the outer mold 42 is provided with multiple reinforcing ribs, which are spaced apart to improve the structural strength and stability of the outer mold 42. When pre-forming multi-layer fabrics, the outer mold 42 needs to withstand certain pressure and external forces. The reinforcing ribs can effectively disperse these forces and prevent the outer mold 42 from deforming or being damaged due to uneven force.

[0035] To facilitate the fixing of the inner mold, in one embodiment, the inner mold 2 has a flange 21, which is disposed within the mounting groove 11. Thus, the flange 21 further enhances the connection stability between the inner mold 2 and the base 1. The flange 21 increases the contact area between the inner mold 2 and the mounting groove 11, making the inner mold 2 more stable within the mounting groove 11 and less prone to tilting or shaking. This further ensures that the pressure applied by the inner mold 2 to the multi-layer fabric is uniform and stable, thereby improving the pre-forming effect and quality. Simultaneously, the flange 21 also serves a certain positioning function, allowing the inner mold 2 to be accurately installed within the mounting groove 11, ensuring the relative positional accuracy between the inner mold 2 and the outer mold 42, further improving the accuracy and consistency of the pre-forming of the multi-layer fabric.

[0036] In one embodiment, the fastener 3 passes through the base 1 and connects to the flange 21. This further strengthens the connection between the inner mold 2 and the base 1, making the inner mold 2 more securely and reliably fixed to the base 1. Simultaneously, the fastener 3 facilitates the installation and removal of the inner mold 2. When it is necessary to replace the inner mold 2 with different specifications to adapt to different pre-forming requirements of multi-layer fabrics, the replacement operation of the inner mold 2 can be completed conveniently and quickly.

[0037] In one embodiment, the inner mold 2 includes a supporting portion 22 and a support portion 23 connected to the supporting portion 22. The support portion 23 is disposed on the base 1. The support portion 23 has a cavity 231 extending through it, and the supporting portion 22 has a weight-reducing groove 24 communicating with the cavity 231. Thus, the overall weight of the inner mold 2 can be reduced by the cavity 231 and the weight-reducing groove 24, facilitating its movement and improving convenience.

[0038] In one embodiment, flanges 5 are provided at both ends of the outer mold 42, and the two flanges 5 are respectively connected to the fixing part 41 and the base 1. Thus, the flanges 5 ensure a stable and reliable connection between the outer mold 42 and the base, as well as between the outer mold 42 and the fixing part 41, reducing the possibility of loosening or displacement of the outer mold 42 during the pre-forming of multi-layer fabrics, and ensuring the stability and working accuracy of the pre-compression device 100.

[0039] In one embodiment, the pre-compression device 100 further includes an adjusting pad 6, which is disposed between every two outer molds 42. Thus, the adjusting pad 6 allows for adjustment of the rebound amount of the multi-layered fabric during pre-compression, fine-tuning of the gap between adjacent outer molds 42, and compensation and correction when the outer molds 42 experience minor positional deviations during installation or undergo deformation due to long-term use.

[0040] It should be noted that the adjusting pad 6 is inserted between the two adjacent outer molds 42.

[0041] It is worth mentioning that the adjusting pad 6 and the outer mold 42 have waist-shaped holes on the side facing away from the inner mold 2. In this way, when the two waist-shaped holes coincide, it is convenient to align and install the adjusting pad 6 and the outer mold 42, which improves the ease of installation and reduces errors.

[0042] It should be added that the outer mold is provided with an extension edge, and the width of the adjustment pad 6 is the same as the thickness of the extension edge of the outer mold. This is done to ensure the pre-compression quality of the multi-layer fabric while compensating for the rebound amount, and to reduce unevenness in the surface pre-compression.

[0043] In one embodiment, the pre-compression device 100 further includes a locking assembly comprising a screw and a nut. The screw is disposed within the oblong hole, and the nut is sleeved on the outside of the screw. Thus, when the adjusting pad 6 is aligned with the extended edges of the two adjacent outer molds 42, the screw can be engaged into the two oblong holes. By rotating the nut, the two extended edges and the adjusting pad 6 are locked together, improving reliability.

[0044] To enhance the fixing effect of the connection between the outer mold 42 and the adjusting pad 6, in one embodiment, the pre-compression device 100 further includes a plurality of fasteners, the fasteners including bolts and nuts, the bolts passing through two adjacent outer molds 42 and the adjusting pad 6, and the nuts being sleeved on the bolts, thereby fixing the two adjacent outer molds 42 and the adjusting pad 6 and improving the pre-compression effect.

[0045] In this embodiment, the adjustment pad 6 is a metal plate, which has good strength and stability and is not easily deformed or damaged, thereby ensuring that the rebound amount of the multi-layer fabric during pre-compression can be continuously and effectively adjusted.

[0046] To facilitate the use of the adjusting pad 6, in one embodiment, a handle 7 is provided on the side of the adjusting pad 6 away from the inner mold 2. Thus, the protruding handle 7 facilitates the operator's grip and application of force. When it is necessary to install, remove, or adjust the position of the adjusting pad 6, the operator can directly grasp the handle 7 to insert or remove the adjusting pad 6 between the two adjacent outer molds 42.

[0047] To facilitate pre-compression using the outer mold 42, in one embodiment, the pre-compression device 100 further includes a handle 8, which is disposed on the outer wall of the outer mold 42. Thus, the operator can better control the outer mold 42 by holding the handle 8 during pre-compression, making the outer mold 42 more stable during the pre-compression process. Furthermore, when the operator needs to pre-compress multi-layered fabrics at different locations, the handle 8 allows for flexible movement and adjustment of the position of the outer mold 42 to adapt to different work requirements.

[0048] If necessary, in order to facilitate the quick installation of the inner mold 2 and the outer mold 42, in this embodiment, the base 1 is provided with multiple grooves or protrusions, and the outer mold 42 is provided with multiple protrusions or grooves, so as to facilitate alignment and installation with the grooves or protrusions on the base 1, improve installation efficiency, and reduce adjustment time during the installation process.

[0049] In this invention, the pre-compression device 100 is mainly applicable to tapered multilayer fabrics.

[0050] The present invention also proposes a method of using a pre-compression device 100. The method of using the pre-compression device 100 includes the pre-compression device 100. The specific structure of the pre-compression device 100 is as described in the above embodiments. Since the method of using the pre-compression device 100 adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be described in detail here.

[0051] In one embodiment, based on the final thickness requirement of the product, the thickness can be divided into multiple layers. The thickness of the first layer is pre-compressed, and then another layer is added and pre-compressed, and so on, until the final thickness required for the product is achieved. This layered pre-compressing method can reduce problems such as interlayer slippage, localized wrinkles, and localized yarn breakage.

[0052] For example, when the tapered multilayer fabric reaches the first layer thickness, the fabric is fitted onto the inner mold 2, and multiple outer molds 42 are respectively attached to the outer surface of the fabric. Then, the adjusting pad 6 is inserted, the end cap 411 is assembled to the flange 5 on the outer mold 42, and the end cap 411 is fixed to the outer mold 42 with bolts. Furthermore, the flange 5 on the outer mold 42 is fastened to the base 1 with bolts. After assembly, the fabric is removed after standing for a certain period of time, thus completing the first layer thickness pre-pressing of the tapered multilayer fabric.

[0053] On this basis, a certain thickness of fabric is sewn together. That is, another shaping mold with a different spacing from the above shaping mold is selected to perform a second layer of pre-pressing. This process is repeated until the required thickness of the product is achieved.

[0054] The above description is merely a preferred embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural transformations made using the contents of the present invention's specification and drawings under the inventive concept of the present invention, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present invention.

Claims

1. A pre-compression device, characterized in that, include: Base; The inner mold is located on the base; A fastener connects the base to the inner mold; Multiple shaping molds, each shaping mold including a fixing part and multiple outer molds, the multiple outer molds are arranged around the inner mold and spaced apart from the inner mold, one end of each of the multiple outer molds is detachably connected to the fixing part, and the other end is detachably connected to the base, and two adjacent outer molds are in contact with each other; The distance between the outer mold and the inner mold of each shaping mold is different, which is used for layered pre-pressing.

2. The pre-compression device as described in claim 1, characterized in that, The base is provided with a mounting groove, and the inner mold is placed in the mounting groove.

3. The pre-compression device as described in claim 2, characterized in that, The inner mold has a flange, which is located within the mounting groove.

4. The pre-compression device as described in claim 3, characterized in that, The fastener passes through the base and connects to the flange.

5. The pre-compression device as described in claim 1, characterized in that, The inner mold includes a load-bearing part and a support part connected to the load-bearing part. The support part is disposed on the base. The support part has a cavity that penetrates the support part, and the load-bearing part has a weight-reducing groove that communicates with the cavity.

6. The pre-compression device as described in claim 1, characterized in that, Flanges are provided at both ends of the outer mold, and the two flanges are respectively connected to the fixing part and the base.

7. The pre-compression device as described in claim 1, characterized in that, The fixing part includes an end cap, and the end cap has a receiving groove on the side facing the outer mold.

8. The pre-compression device as described in claim 1, characterized in that, The pre-compression device also includes an adjustment pad, which is disposed between every two outer molds.

9. The pre-compression device as described in claim 8, characterized in that, The adjustment pad has a handle protruding from the side away from the inner mold.

10. The pre-compression device as described in claim 1, characterized in that, The pre-compression device also includes a handle, which is disposed on the outer wall of the outer mold.

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