Die for rapidly forming thermoplastic composite material product

Abstract

The utility model discloses a mould for rapidly forming a thermoplastic composite material product, which comprises an upper mould and a lower mould, the upper mould is provided with a concave cavity, the lower mould is provided with a convex mould cavity matched with the concave cavity, and the concave cavity and the convex mould cavity are closed to be used for compacting and forming the product; a boss is fixedly connected to the upper die, a blanking knife is arranged on the boss, a forming groove is formed in a male die cavity in the lower die, the forming groove and the boss are oppositely arranged so that an installation step can be formed on a product, a forming hole is formed in the forming groove, and the forming hole is communicated with the blanking knife. The blanking knife and the forming hole are oppositely arranged so that a mounting hole can be blanked in a formed product. According to the utility model, the punching knife is matched with the forming hole to directly punch and form the mounting hole in the hot-press forming process of a product, so that the processing efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of hot pressing mold technology, specifically to a mold for rapid prototyping thermoplastic composite material products. Background Technology

[0002] Glass Mat reinforced thermoplastics (GMT) are composite materials made with thermoplastic resin as the matrix and glass fiber mat as the reinforcing skeleton. GMT is a new type of engineering plastic that can be widely used in various parts of automobile bodies, replacing traditional metal parts, reducing weight, and lowering costs.

[0003] Glass fiber reinforced thermoplastics can be produced into sheet-like products through hot pressing. In bus toilet products, the toilet roof panel is often manufactured using glass fiber reinforced thermoplastic material and formed through hot pressing. However, these products require holes for installing components such as lights. After hot pressing, the panels need to be cut again to fit these holes, creating more processing and product turnover steps and reducing production efficiency. Utility Model Content

[0004] The purpose of this invention is to solve the above-mentioned technical problems and provide a mold for rapid prototyping thermoplastic composite material products.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A rapid prototyping thermoplastic composite material product mold includes an upper mold and a lower mold. The upper mold has a concave cavity, and the lower mold has a convex cavity that matches the concave cavity. The concave cavity and the convex cavity are closed to compress and form the product. A boss is fixedly connected to the upper mold, and a punching cutter is provided on the boss. A forming groove is formed in the convex cavity of the lower mold. The forming groove is opposite to the boss to form an installation step on the product. A forming hole is formed in the forming groove, and the punching cutter is opposite to the forming hole to punch the installation hole in the formed product.

[0007] Furthermore, the upper mold includes an upper support and an upper template fixed on the upper support, the lower mold includes a lower support and a lower template fixed on the lower support, the concave cavity is formed on the upper template, and the convex cavity is fixed on the lower template.

[0008] Furthermore, the lower support is fixedly connected with a plurality of first positioning posts around its periphery, and the upper support is fixedly connected with a second positioning post that is opposite to the first positioning posts around its periphery. The upper end of the first positioning post is provided with a conical groove, and the lower end of the second positioning post is provided with a conical boss, the conical boss being opposite to the conical groove.

[0009] Furthermore, the first positioning post has a threaded hole, and the second positioning post has a through hole. A locking bolt passes through the through hole, and the lower end of the locking bolt extends into the threaded hole and engages with the threaded hole.

[0010] Furthermore, a fixing plate is welded and fixed around the periphery of the lower support.

[0011] In one embodiment, the cutting blade is fixed to the upper mold. During the closing process of the upper and lower molds, the cutting blade moves towards the forming hole to cut the product, thereby creating mounting holes on the product.

[0012] In another embodiment, the blanking cutter is movably mounted on the upper mold, a guide block is fixedly connected to the upper support, the blanking cutter slides with the guide block, and a drive device is provided on the upper support to drive the blanking cutter to move toward the forming hole.

[0013] Furthermore, the drive device includes a nut fixed on the upper bracket and a screw rotatably connected to the punching cutter, the screw passing through the nut and engaging with the nut via threads.

[0014] This utility model provides a rapid prototyping thermoplastic composite material product mold, which has the following advantages: by setting a blanking cutter on the upper template and setting corresponding forming holes on the lower template, during the hot pressing process of the product, the blanking cutter and the forming holes work together to form mounting holes for installing other parts on the product, thus eliminating the need for separate clamping, positioning and cutting after the product is formed. The mounting holes are directly punched and formed during the hot pressing process of the product, which improves processing efficiency; the mold structure is simple, the mold manufacturing cycle is short and the cost is low. Attached Figure Description

[0015] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings:

[0016] Figure 1 A structural schematic diagram of a rapid prototyping thermoplastic composite material product mold provided by this utility model;

[0017] Figure 2 A schematic diagram of the structure of a rapid prototyping thermoplastic composite material product mold in which the upper mold and the lower mold are separated, provided by this utility model;

[0018] Figure 3A schematic diagram of the structure of a rapid prototyping thermoplastic composite material product mold in the separated state, provided by this utility model;

[0019] Figure 4 A cross-sectional structural diagram of a rapid prototyping thermoplastic composite material product mold provided by this utility model;

[0020] Figure 5 This is a cross-sectional structural diagram of a rapid prototyping thermoplastic composite material product mold according to another embodiment of the present invention.

[0021] The following are the labels in the diagram: 10. Upper mold; 11. Concave cavity; 12. Boss; 13. Punching cutter; 14. Upper support; 15. Upper template; 16. Second positioning post; 17. Conical boss; 20. Lower mold; 21. Conical mold cavity; 22. Forming groove; 23. Forming hole; 24. Lower support; 25. Lower template; 26. First positioning post; 27. Conical groove; 28. Fixing plate; 3. Guide block; 4. Drive device; 41. Nut; 42. Screw. Detailed Implementation

[0022] It should be understood that the specific embodiments described herein are merely illustrative of the present invention and are not intended to limit the present invention.

[0023] The technical solutions of the embodiments of this 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 this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this utility model.

[0024] It should be noted that all directional indications (such as up-down-left-right-forward-backward...) in the embodiments of this utility model 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. The connection can be a direct connection or an indirect connection.

[0025] like Figures 1-4As shown, a rapid prototyping thermoplastic composite material product mold includes an upper mold 10 and a lower mold 20. The upper mold 10 is provided with a concave cavity 11, and the lower mold 20 is provided with a convex mold cavity 21 that matches the concave cavity 11. The concave cavity 11 and the convex mold cavity 21 are closed to compress and form the product. A boss 12 is fixedly connected to the upper mold 10, and a punching cutter 13 is provided on the boss 12. A forming groove 22 is formed in the convex mold cavity 21 of the lower mold 20. The forming groove 22 is arranged opposite to the boss 12 to form an installation step on the product. A forming hole 23 is formed in the forming groove 22, and the punching cutter 13 is arranged opposite to the forming hole 23 to punch the installation hole in the formed product.

[0026] By adopting the above technical solution, a blanking cutter 13 is set on the upper template 15 and a corresponding forming hole 23 is set on the lower template 25. During the hot pressing process of the product, the blanking cutter 13 and the forming hole 23 work together to form mounting holes for installing other parts on the product. Therefore, it is not necessary to perform separate clamping, positioning and cutting processing after the product is formed. The mounting holes are directly punched and formed during the hot pressing process of the product, which improves processing efficiency. The mold structure is simple, the mold manufacturing cycle is short and the cost is low. Specifically, the outer diameter of the blanking cutter 13 is the same as the inner diameter of the forming hole 23, so that the material is sheared into holes when the blanking cutter 13 is pressed into the forming hole 23.

[0027] Specifically, the upper mold 10 includes an upper support 14 and an upper template 15 fixed on the upper support 14, and the lower mold 20 includes a lower support 24 and a lower template 25 fixed on the lower support 24. The concave cavity 11 is formed on the upper template 15, and the convex mold cavity 21 is fixed on the lower template 25. The upper support 14 and the lower support 24 provide support, facilitating the movement of the upper mold 10 onto the lower mold 20 for mold closing.

[0028] Specifically, the lower support 24 is fixedly connected with a plurality of first positioning posts 26 around its circumference, and the upper support 14 is fixedly connected with a second positioning post 16 opposite to the first positioning posts 26 around its circumference. The upper end of each first positioning post 26 has a conical groove 27, and the lower end of each second positioning post 16 has a conical boss 1712, which is opposite to the conical groove 27. Through the cooperation of the conical groove 27 and the conical boss 1712 for guiding and positioning, the positions of the first positioning posts 26 and the second positioning posts 16 remain consistent and stable after mold closing, thereby ensuring that the upper mold 10 and the lower mold 20 maintain a stable mold closing position each time.

[0029] Specifically, the first positioning post 26 has a threaded hole, and the second positioning post 16 has a through hole. A locking bolt passes through the through hole, and the lower end of the locking bolt extends into the threaded hole and is threaded into the threaded hole. The upper mold 10 and the lower mold 20 are locked together by the locking bolt passing through the first positioning post 26 and the second positioning post 16.

[0030] In some embodiments, such as Figure 3-4 As shown, a fixing plate 28 is welded and fixed around the lower support 24. During hot pressing, the fabric is covered on the mold and clamped around the fabric to the fixing plate 28 to initially fix the fabric and prevent it from shifting. Then, the heated GMT sheet is placed on the mold for hot pressing.

[0031] In some embodiments, the cutting blade 13 is fixed to the upper mold 10. When the upper mold 10 and lower mold 20 are closed, the cutting blade 13 moves towards the forming hole 23 to cut the product, thereby creating mounting holes on the product.

[0032] In another embodiment, such as Figure 5 As shown, the cutting blade 13 is movably mounted on the upper mold 10, and a guide block 3 is fixedly connected to the upper support 14. The cutting blade 13 slides with the guide block 3, and a driving device 4 is provided on the upper support 14 to drive the cutting blade 13 to move towards the forming hole 23. After the product is hot-pressed in the forming mold, the cutting blade 13 is driven to move towards the forming hole 23, so that the cutting blade 13 cooperates with the forming hole 23 to directly press and cut the product material, thus obtaining the mounting hole on the product.

[0033] Specifically, the driving device 4 includes a nut 41 fixed on the upper bracket 14 and a screw 42 rotatably connected to the punching cutter 13. The screw 42 passes through the nut 41 and is threadedly engaged with it. Rotating the screw 42 with a pneumatic wrench or other tool causes the screw 42 to move relative to the nut 41, thereby driving the punching cutter 13 to move. When the punching cutter 13 moves to the forming hole 23, it cuts off the material on the product, thus forming the mounting hole on the product. The screw 42 drives the material, increasing the driving force and facilitating the punching cutter 13 to cut the material. It should be noted that those skilled in the art can, as needed, configure the driving device 4 as a cylinder to drive the punching cutter 13, or the driving device 4 can be driven by a motor-driven screw transmission to drive the punching cutter 13.

[0034] The working principle is as follows: During use, the composite fabric is placed on the lower mold 20, and the fabric is clamped around the fixed plates 28 around the lower mold 20 with strong pliers to prevent the fabric from shifting. The GMT board is heated and softened, and then the heated GMT board is placed on the lower mold 20. The upper mold 10 is closed on the lower mold 20, and the second positioning post 16 cooperates with the first positioning post 26 to position the mold. The locking bolt is passed through the second positioning post 16 and locked on the first positioning post 26. The product is stationary and shaped in the mold. The cutting knife 13 is driven by the driving device 4 to move towards the forming hole 23, so that the cutting knife 13 cooperates with the forming hole 23 to directly press and cut the product material to obtain the mounting hole on the product.

[0035] The parts not covered in this technical solution can be implemented using existing technologies.

[0036] The foregoing has shown and described the basic principles, main features, and characteristics of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification 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 the claimed utility model. The scope of protection of this utility model includes the appended claims and their equivalents.

Claims

1. A mold for rapid prototyping thermoplastic composite products, characterized in that: The mold includes an upper mold (10) and a lower mold (20). The upper mold (10) is provided with a concave cavity (11), and the lower mold (20) is provided with a convex mold cavity (21) that matches the concave cavity (11). The concave cavity (11) and the convex mold cavity (21) are molded together to compact and form the product. A boss (12) is fixedly connected to the upper mold (10), and a punching cutter (13) is provided on the boss (12). A forming groove (22) is opened in the convex mold cavity (21) of the lower mold (20). The forming groove (22) is arranged opposite to the boss (12) to form an installation step on the product. A forming hole (23) is opened on the forming groove (22), and the punching cutter (13) is arranged opposite to the forming hole (23) to punch the installation hole in the formed product.

2. The mold for rapid prototyping thermoplastic composite products according to claim 1, characterized in that: The upper mold (10) includes an upper support (14) and an upper template (15) fixed on the upper support (14). The lower mold (20) includes a lower support (24) and a lower template (25) fixed on the lower support (24). The concave cavity (11) is formed on the upper template (15), and the convex mold cavity (21) is fixed on the lower template (25).

3. The mold for rapid prototyping thermoplastic composite products according to claim 2, characterized in that: The lower bracket (24) is fixedly connected with a plurality of first positioning posts (26) around its perimeter, and the upper bracket (14) is fixedly connected with a second positioning post (16) that is opposite to the first positioning posts (26) around its perimeter. The upper end of the first positioning post (26) is provided with a conical groove (27), and the lower end of the second positioning post (16) is provided with a conical boss (17)(12). The conical boss (17)(12) is opposite to the conical groove (27).

4. The rapid prototyping thermoplastic composite material product mold according to claim 3, characterized in that: The first positioning post (26) has a threaded hole, and the second positioning post (16) has a through hole. A locking bolt passes through the through hole and the lower end of the locking bolt extends into the threaded hole to engage with the threaded hole.

5. A rapid prototyping thermoplastic composite material product mold according to any one of claims 2-4, characterized in that: The lower bracket (24) is welded and fixed with a fixing plate (28) around its perimeter.

6. A rapid prototyping thermoplastic composite material product mold according to any one of claims 2-4, characterized in that: The punching cutter (13) is fixed on the upper mold (10).

7. A rapid prototyping thermoplastic composite material product mold according to any one of claims 2-4, characterized in that: The blanking cutter (13) is movably mounted on the upper mold (10), and a guide block (3) is fixedly connected to the upper bracket (14). The blanking cutter (13) and the guide block (3) are slidably engaged. A drive device (4) is provided on the upper bracket (14) to drive the blanking cutter (13) to move toward the forming hole (23).

8. A rapid prototyping thermoplastic composite material product mold according to claim 7, characterized in that: The drive device (4) includes a nut (41) fixed on the upper bracket (14) and a screw (42) rotatably connected to the punching cutter (13). The screw (42) passes through the nut (41) and is threadedly engaged with the nut (41).

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