Modified glass fiber composite material forming mold

Abstract

A modified glass fiber composite material forming die relates to the technical field of dies and comprises a lower base and an upper cover, a groove is formed in the middle of the lower base, the upper cover is installed on the top of the lower base, a first fixing notch is formed in the left side of the lower base, and an upper fixing block is installed in the first fixing notch. The side, away from the fixed clamping groove, of the lower base is rotationally connected with an adjusting bolt, the adjusting bolt is in threaded connection with a movable clamping groove, a second fixed notch is formed in the top of the movable clamping groove, and a downward pressing fixed block is installed in the second fixed notch. According to the utility model, the tensioning problem of modified glass fibers in the forming process can be effectively solved through the tensioning mechanism, the fibers are prevented from loosening, and the interlayer interface performance of a composite material is improved. The die is reasonable in structural design, easy and convenient to operate and easy to achieve automatic production, and production efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of mold technology, and more specifically, to a mold for molding modified glass fiber composite materials. Background Technology

[0002] Glass fiber composites are widely used in aerospace, rail transportation, and other fields due to their excellent tensile strength, high modulus ratio, and corrosion resistance. However, the basic mechanical properties of glass fiber composites are limited by the inherent interfacial properties between the glass fiber and the resin matrix. Modified glass fibers can increase the specific surface area and surface-active functional groups of the glass fiber, enabling the glass fiber and resin matrix to form a good interfacial phase, thereby improving the interlaminar interfacial properties of the composite material. However, the length of modified glass fibers is limited, and existing hot-pressing small molds cannot effectively solve the tensioning problem of modified glass fibers during the molding process, easily causing fiber relaxation and affecting the interlaminar interfacial properties of the composite material.

[0003] Chinese patent CN114316519A discloses a carbon-glass hybrid sheet and its preparation method. This patent modifies resin by using carbon fiber powder or glass fiber powder, uniformly dispersing the carbon fiber powder or glass fiber powder within the carbon fiber and glass fiber, thereby improving the interfacial properties of the carbon-glass hybrid sheet. However, this patent only optimizes the modification of the resin and the addition method of the carbon fiber and glass fiber; it does not address the tensioning issue of the modified glass fiber during the molding process. Utility Model Content

[0004] The purpose of this invention is to solve the problems mentioned in the background art, and to propose a modified glass fiber composite material molding die.

[0005] The technical solution adopted by this utility model to solve its technical problem is:

[0006] A modified glass fiber composite material molding die includes a lower base and an upper cover. The lower base has a groove in the middle, and the upper cover is installed on the top of the lower base. A first fixing slot is formed on the left side of the lower base, and an upper fixing block is installed in the first fixing slot. An adjusting bolt is rotatably connected to the side of the lower base away from the fixing slot. A movable slot is threaded onto the adjusting bolt. A second fixing slot is formed on the top of the movable slot, and a lower fixing block is installed in the second fixing slot.

[0007] Furthermore, there are two adjusting bolts, located on both sides of the lower base.

[0008] Furthermore, there is one adjusting bolt located in the middle of the lower base. The lower base is also provided with two guide rods, which are located on both sides of the adjusting bolt. The lower pressing and fixing block is provided with guide holes that cooperate with the guide rods.

[0009] Furthermore, the adjustment bolt can be rotated to move the movable slot away from or closer to the lower base.

[0010] Furthermore, the upper cover and the lower base are evenly distributed with a number of heating holes.

[0011] Furthermore, the movable slot is provided with an internal threaded hole that mates with the adjusting bolt, and the adjusting bolt is installed in the internal threaded hole.

[0012] Furthermore, the upper fixing block is connected to the first fixing slot by bolt thread.

[0013] Furthermore, the pressing fixing block is connected to the second fixing slot by bolt thread.

[0014] Compared with existing technologies, the advantages of this invention are as follows: This invention effectively solves the tensioning problem of modified glass fibers during the molding process through a tensioning mechanism, preventing fiber relaxation and improving the interlayer interface properties of the composite material. The mold structure is rationally designed, easy to operate, and readily automates production, thus improving production efficiency. The mold heating method is flexible, allowing for temperature adjustment as needed to adapt to the molding requirements of different materials. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;

[0016] Figure 2 This is a three-dimensional structural diagram of the lower base.

[0017] Figure 3 This is a schematic diagram of the structure of the second embodiment of the present utility model;

[0018] Figure 4 Scanning electron microscope image of ZnO nanopillars grown on glass fiber surface;

[0019] Figure 5 Scanning electron microscope image of carbon nanotubes grafted onto the surface of glass fiber;

[0020] Wherein: 1-lower base, 2-upper cover, 3-upper fixing block, 4-adjusting bolt, 5-moving slot, 6-lower pressing fixing block, 7-guide rod, 11-heating hole, 12-groove, 13-first fixing slot. Detailed Implementation

[0021] The technical solutions of the present utility model 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 utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model. The present utility model will be further described with reference to the accompanying drawings and embodiments:

[0022] like Figures 1 to 5 As shown, a mold for molding modified glass fiber composite materials includes a lower base 1 and an upper cover 2. The lower base has a groove 12 in the middle for placing the modified glass fiber and resin film to be processed. The groove is 120 mm long, 30 mm wide, and 0.3 mm deep. The upper cover is installed on the top of the lower base. A first fixing slot 13 is formed on the left side of the lower base, and an upper fixing block 3 is installed within the first fixing slot. An adjusting bolt 4 is rotatably connected to the side of the lower base away from the fixing slot. A movable slot 5 is threaded onto the adjusting bolt. A second fixing slot is formed at the top of the movable slot, and a lower fixing block 6 is installed within the second fixing slot.

[0023] Furthermore, there are two adjusting bolts, located on both sides of the lower base.

[0024] In some embodiments, such as Figure 4 As shown, there is one adjusting bolt, which is located in the middle of the lower base. The lower base is also provided with two guide rods 7, which are located on both sides of the adjusting bolt. The lower pressing and fixing block is provided with guide holes that cooperate with the guide rods.

[0025] Furthermore, the adjustment bolt can be rotated to move the movable slot away from or closer to the lower base.

[0026] Furthermore, the upper cover and the lower base are evenly distributed with a number of heating holes 11 for placing heating rods to heat the mold.

[0027] Furthermore, the movable slot is provided with an internal threaded hole that mates with the adjusting bolt, and the adjusting bolt is installed in the internal threaded hole.

[0028] The tensioning mechanism consists of a movable slot and an adjusting bolt. This mechanism is designed based on the principle of screw transmission; by rotating the adjusting bolt, the rotational motion is converted into linear motion of the movable slot, thereby applying a uniform tension to the modified glass fiber. The effect is even better if the tensioning mechanism is combined with a guide rod and guide hole design.

[0029] The working principle of this molding die is as follows: First, the modified glass fiber and resin film to be processed are placed in the groove between the upper cover 1 and the lower base 2. One end is positioned between the first fixing slot and the upper fixing block, and is fixed by the downward pressure of the upper fixing block. The other end is positioned between the second fixing slot and the downward pressure fixing block, and the fiber is tightened by the tensioning mechanism. Then, the adjusting bolt is rotated, causing the moving slot to move along the adjusting bolt, thereby applying tension to the modified glass fiber and placing it in an appropriate tension state. Next, the resin film is laid in the groove, covering the modified glass fiber. Finally, the mold is heated to 120-180℃ in the heating hole using a heating rod, so that the modified glass fiber and resin film are hot-pressed into a glass fiber composite material.

[0030] In at least one embodiment, the upper fixing block is threadedly connected to the first fixing slot by a bolt.

[0031] In at least one embodiment, the pressing fixing block is connected to the second fixing slot by a bolt thread.

[0032] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The descriptions of the above embodiments and specifications are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of protection claimed by this utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A mold for molding modified glass fiber composite materials, characterized in that, The device includes a lower base and an upper cover. The lower base has a groove in the middle, and the upper cover is installed on the top of the lower base. A first fixing slot is formed on the left side of the lower base, and an upper fixing block is installed in the first fixing slot. An adjusting bolt is rotatably connected to the side of the lower base away from the fixing slot. A movable slot is threaded onto the adjusting bolt. A second fixing slot is formed on the top of the movable slot, and a lower fixing block is installed in the second fixing slot.

2. The modified glass fiber composite material molding die according to claim 1, characterized in that, There are two adjusting bolts, located on both sides of the lower base.

3. The modified glass fiber composite material molding die according to claim 1, characterized in that, One adjusting bolt is provided, which is located in the middle of the lower base. Two guide rods are also provided on the lower base, which are located on both sides of the adjusting bolt. The lower pressing and fixing block is provided with guide holes that cooperate with the guide rods.

4. The modified glass fiber composite material molding die according to claim 2 or 3, characterized in that, The adjustment bolt can be rotated to move the movable slot away from or closer to the lower base.

5. The modified glass fiber composite material molding die according to claim 1, characterized in that, The upper cover and lower base are evenly distributed with several heating holes.

6. The modified glass fiber composite material molding die according to claim 1, characterized in that, The movable slot is provided with an internal threaded hole that mates with the adjusting bolt, and the adjusting bolt is installed in the internal threaded hole.

7. The modified glass fiber composite material molding die according to claim 1, characterized in that, The upper fixing block is connected to the first fixing slot by bolt thread.

8. The modified glass fiber composite material molding die according to claim 1, characterized in that, The pressing and fixing block is connected to the second fixing slot by bolt thread.

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