A tooling for molding a composite material and a method of using the same

Abstract

A kind of tooling for composite forming and its using method, composite processing technical field, can solve: composite parts forming needs to wipe clean lower mould, then brush coating release agent on lower mould, existing release agent brush coating mode is artificial brush coating time-consuming and laborious influence the progress of forming, upper mould falls or suddenly starts and is prone to cause injury to operating personnel problem.Step is: release agent is injected into injection tank by injection port;Electric telescopic rod is energized and elongated, and drives the piston to move upward along the pressurizing barrel, and the electric telescopic rod is retracted to drive the piston to move downward to press the gas in the pressurizing barrel into the injection tank;Gas enters the injection tank, pushes the annular plate to move upward to make the release agent enter the liquid inlet hole, and pushes the sealing plug, and the release agent flows out through the gap to replace the work of smearing release agent by artificial;Composite material is placed in upper mould, and control hydraulic cylinder extends to extrude the composite material in lower mould to form.

Description

Technical Field

[0001] This invention belongs to the field of composite material processing technology, and in particular to a tooling for composite material molding and its usage method. Background Technology

[0002] Molding composite parts requires cleaning the lower mold and then applying a release agent to it to facilitate demolding after molding. The existing method of applying the release agent manually is time-consuming and labor-intensive, affecting the molding progress. At the same time, when manually applying the release agent, the operator's hand is placed into the lower mold, which can easily cause injury if the upper mold falls or is suddenly started. In addition, when the mold is squeezed, the composite material overflows, and it is difficult to clean up after it cools. Furthermore, the existing extrusion device can only squeeze in one middle point when the mold is squeezed, which can easily lead to uneven pressure on the mold, resulting in uneven thickness or different bonding of the composite material. Summary of the Invention

[0003] The purpose of this invention is to solve the above-mentioned problems existing in the prior art by providing a tooling for molding composite materials and its usage method.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: A tooling for molding composite materials, characterized in that it includes a base assembly, a lower mold assembly and an upper mold assembly, wherein the lower mold assembly is fixed inside the base assembly, the upper mold assembly is slidably connected to the base assembly, and the lower mold assembly and the upper mold assembly are used in conjunction.

[0005] The base assembly includes: a housing, a slide, and an annular groove. The slide is fixed on the housing, and an opening and an annular groove are provided on the top surface of the housing.

[0006] The lower mold assembly includes: a lower mold, an injection unit, an electric telescopic rod, a bracket, a conical plug, and a pressurizing unit. The lower mold is fixed to the top surface of the housing, and the inner wall of the lower mold is inclined. The opening of the housing matches the lower mold. The injection unit is fixed to the outer side of the lower mold. The electric telescopic rod is fixed to the bottom surface of the housing. The bracket is horizontally fixed to the movable end of the electric telescopic rod. The conical plug is fixed to the upper end of the bracket. The bottom surface of the lower mold has a hole that matches the conical plug. The conical plug slides in the hole. The pressurizing unit is fixed to the bottom surface of the housing. The pressurizing unit is fixedly connected to the bracket and fixedly communicates with the injection unit.

[0007] The injection unit includes: an injection tank, an annular plate, a one-way valve, an injection port, a spring telescopic rod, and a sealing plug. The injection tank is fixed to the outer side of the lower mold. The annular plate is slidably sealed inside the injection tank. The one-way valve is provided on the bottom surface of the injection tank. An injection port is provided on the side of the injection tank. A spring telescopic rod is horizontally fixed to the inner wall of the injection tank. A sealing plug is fixed to the other end of the spring telescopic rod. An inlet hole is provided on the side wall of the lower mold, which communicates with the injection tank. The spring telescopic rod is located inside the inlet hole. The sealing plug is slidably sealed with the inlet hole. Multiple spring telescopic rods, sealing plugs, and inlet holes are provided.

[0008] The pressurization unit includes: a pressurization tank, a second one-way valve, a piston, and a conduit. The pressurization tank is fixed to the bottom surface of the housing. The second one-way valve is provided on the side of the pressurization tank. The piston is slidably sealed inside the pressurization tank. The piston is fixedly connected to the bracket. One end of the conduit is fixedly connected to the pressurization tank, and the other end of the conduit is fixedly connected to the first one-way valve.

[0009] The upper mold assembly includes: a fixed plate, an upper mold, an annular cutter, a hydraulic cylinder, a linkage plate, a spring telescopic sleeve, a roller frame, rollers, and a spring. The fixed plate is slidably connected to the slide. The upper mold is fixed to the lower end of the fixed plate, and the annular cutter is fixed to the lower end of the fixed plate. The annular cutter matches an annular groove. The fixed end of the hydraulic cylinder is fixedly connected to the slide, and the movable end of the hydraulic cylinder is fixed to the linkage plate. One end of the spring telescopic sleeve is fixedly connected to the linkage plate, and the other end of the spring telescopic sleeve is fixedly connected to the fixed plate. The lower end of the linkage plate is symmetrically rotatably connected to the roller frame, and rollers are rotatably connected to the two roller frames respectively. The tops of the rollers rest against the top surface of the fixed plate, and a spring is fixed between the two roller frames.

[0010] A method for using a tooling for molding composite materials, the method comprising the following steps: S1: Inject the release agent into the injection tank through the injection port; S2: The electric telescopic rod is energized and extended, which drives the piston to move upward along the pressurization tank. The electric telescopic rod retracts and drives the piston downward to force the gas inside the pressurization tank into the injection tank. S3: Gas enters the injection tank, pushing the annular plate upward to allow the release agent to enter the injection hole and push the sealing plug. The release agent flows out through the gap, replacing the manual work of applying the release agent. S4: Place the composite material in the upper mold and control the hydraulic cylinder to extend and extrude the composite material in the lower mold.

[0011] Compared with the prior art, the beneficial effects of the present invention are: This invention provides a tooling for molding composite materials, which can solve the problems mentioned in the background art: the molding of composite material parts requires cleaning the lower mold and then brushing a release agent onto the lower mold for easy demolding after molding. The existing method of brushing the release agent is manual, which is time-consuming and laborious and affects the molding progress. At the same time, when brushing manually, the operator's hand is put into the lower mold, and the upper mold may fall or start suddenly, which may cause injury to the operator. There is also the problem that the composite material overflows when the mold is extruded, and it is difficult to clean the overflowed composite material after it cools down. At the same time, it can also solve the problem that the existing extrusion device can only extrude in one middle when the mold is extruded, which can easily lead to uneven pressure on the mold, resulting in uneven thickness or different bonding of the composite material. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a magnified view of a specific area; Figure 3 This is a top view of the lower mold assembly; Figure 4 This is a bottom view of the lower mold assembly; Figure 5 This is a schematic diagram of a ring-shaped plate structure; Figure 6 This is a bottom view of the upper mold assembly. Detailed Implementation

[0013] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the invention, not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0014] A tooling for molding composite materials includes: a base assembly 1, a lower mold assembly 2 and an upper mold assembly 3. The lower mold assembly 2 is fixed inside the base assembly 1, and the upper mold assembly 3 is slidably connected to the base assembly 1. The lower mold assembly 2 and the upper mold assembly 3 are used in conjunction.

[0015] The base assembly 1 includes: a housing 1-1, a slide 1-2, and an annular groove 1-3. The slide 1-2 is fixed on the housing 1-1, the top surface of the housing 1-1 is provided with an opening, and the top surface of the housing 1-1 is provided with an annular groove 1-3.

[0016] The lower mold assembly 2 includes: a lower mold 2-1, an injection unit 2-2, an electric telescopic rod 2-3, a bracket 2-4, a conical plug 2-5, and a pressurizing unit 2-6. The lower mold 2-1 is fixed to the top surface of the housing 1-1. The inner wall of the lower mold 2-1 is inclined. The opening of the housing 1-1 matches the lower mold 2-1. The injection unit 2-2 is fixed to the outside of the lower mold 2-1. The electric telescopic rod 2-3 is fixed to the bottom surface of the housing 1-1. The bracket 2-4 is horizontally fixed to the movable end of the electric telescopic rod 2-3. The conical plug 2-5 is fixed to the upper end of the bracket 2-4. The bottom surface of the lower mold 2-1 is provided with a hole that matches the conical plug 2-5. The conical plug 2-5 slides in the hole. The pressurizing unit 2-6 is fixed to the bottom surface of the housing 1-1. The pressurizing unit 2-6 is fixedly connected to the bracket 2-4 and fixedly connected to the injection unit 2-2.

[0017] The injection unit 2-2 includes: an injection tank 2-2-1, an annular plate 2-2-2, a one-way valve 2-2-3, an injection port 2-2-4, a spring telescopic rod 2-2-5, and a sealing plug 2-2-6. The injection tank 2-2-1 is fixed to the outer side of the lower mold 2-1. The annular plate 2-2-2 is slidably sealed inside the injection tank 2-2-1. The one-way valve 2-2-3 is provided on the bottom surface of the injection tank 2-2-1, and an injection port 2-2-6 is provided on the side of the injection tank 2-2-1. 2-4, A spring telescopic rod 2-2-5 is horizontally fixed to the inner wall of the injection tank 2-2-1, and a sealing plug 2-2-6 is fixed to the other end of the spring telescopic rod 2-2-5. An inlet hole is provided on the side wall of the lower mold 2-1, which communicates with the injection tank 2-2-1. The spring telescopic rod 2-2-5 is placed inside the inlet hole, and the sealing plug 2-2-6 slides and seals with the inlet hole. Multiple spring telescopic rods 2-2-5, sealing plugs 2-2-6, and inlet holes are provided.

[0018] The pressurizing unit 2-6 includes: a pressurizing tank 2-6-1, a second one-way valve 2-6-2, a piston 2-6-3, and a conduit 2-6-4. The pressurizing tank 2-6-1 is fixed to the bottom surface of the housing 1-1. The second one-way valve 2-6-2 is provided on the side of the pressurizing tank 2-6-1. The piston 2-6-3 is slidably sealed inside the pressurizing tank 2-6-1. The piston 2-6-3 is fixedly connected to the bracket 2-4. One end of the conduit 2-6-4 is fixedly connected to the pressurizing tank 2-6-1, and the other end of the conduit 2-6-4 is fixedly connected to the first one-way valve 2-2-3.

[0019] The upper mold assembly 3 includes: a fixed plate 3-1, an upper mold 3-2, an annular cutter 3-3, a hydraulic cylinder 3-4, a linkage plate 3-5, a spring telescopic sleeve 3-6, a roller frame 3-7, a roller 3-8, and a spring 3-9. The fixed plate 3-1 is slidably connected to the slide 1-2. The upper mold 3-2 is fixed to the lower end of the fixed plate 3-1, and the annular cutter 3-3 is fixed to the lower end of the fixed plate 3-1. The annular cutter 3-3 matches the annular groove 1-3. The fixed end of the hydraulic cylinder 3-4 is connected to the slide. The frame 1-2 is fixedly connected. The movable end of the hydraulic cylinder 3-4 is fixed with a linkage plate 3-5. One end of the spring telescopic sleeve 3-6 is fixedly connected to the linkage plate 3-5, and the other end of the spring telescopic sleeve 3-6 is fixedly connected to the fixed plate 3-1. The lower end of the linkage plate 3-5 is symmetrically rotatably connected with roller frames 3-7. Rollers 3-8 are rotatably connected to the two roller frames 3-7 respectively. The rollers 3-8 rest against the top surface of the fixed plate 3-1. A spring 3-9 is fixed between the two roller frames 3-7.

[0020] A method for using a tooling for molding composite materials, the method comprising the following steps: S1: Inject the release agent into the injection tank 2-2-1 through the injection port 2-2-4; S2: The electric telescopic rod 2-3 is energized and extended, which drives the piston 2-6-3 to move upward along the pressurizing tank 2-6-1. The electric telescopic rod 2-3 retracts and drives the piston 2-6-3 to move downward, which forces the gas inside the pressurizing tank 2-6-1 into the injection tank 2-2-1. S3: Gas enters the injection tank 2-2-1, pushing the annular plate 2-2-2 upward to allow the release agent to enter the injection hole, and pushes the sealing plug 2-2-6. The release agent flows out through the gap, replacing the manual work of applying the release agent. S4: Place the composite material in the upper mold 3-2 and control the hydraulic cylinder 3-4 to extend and extrude the composite material in the lower mold 2-1.

[0021] The working principle of this invention is: The release agent is injected into the injection tank 2-2-1 through the injection port 2-2-4. A trial run is required for the first use of this device. This device is connected to an external power supply and a hydraulic pump unit. When the electric telescopic rod 2-3 is energized and extended, it moves the conical plug 2-5 upwards via the bracket 2-4. The bracket 2-4 then moves the piston 2-6-3 upwards along the pressure tank 2-6-1. The movement of the piston 2-6-3 draws air into the pressure tank 2-6-1 through the one-way valve 2-6-2. Then, the electric telescopic rod 2-3 is controlled to retract, causing the conical plug 2-5 to reset. Simultaneously, the piston 2-6-3 moves downwards, filling the pressure tank 2-6-1. Gas is forced into conduit 2-6-4 and injected into injection tank 2-2-1 through one-way valve 2-2-3. One-way valve 2-6-2 closes when gas enters and one-way valve 2-6-2 closes when gas exits. Gas entering injection tank 2-2-1 pushes annular plate 2-2-2 upwards. The moving annular plate 2-2-2 squeezes the release agent in injection tank 2-2-1, causing it to enter the inlet hole. As the pressure of the release agent increases, it pushes sealing plug 2-2-6 and stretches spring telescopic rod 2-2-5. Sealing plug 2-2-6 moves in conjunction with the lower mold 2. A gap is created between the inner walls of mold 1 and mold release agent, which flows out through the gap and slides downwards along the inner wall of mold 2-1, replacing manual application of the release agent. When the release agent flows out, the pressure decreases, and the spring telescopic rod 2-2-5 drives the sealing plug 2-2-6 to reset, preventing further release of the release agent and completing the trial run. The multiple spring telescopic rods 2-2-5, sealing plugs 2-2-6, and inlet holes ensure more uniform flow of the release agent. Then, the composite material is placed in mold 3-2, and the hydraulic cylinder 3-4 extends, causing the fixed plate 3-1 to move downwards along the slide 1-2, thereby moving the upper mold 3-2 towards the lower mold 2-1. The composite material is extruded and molded. During extrusion, excess composite material overflows and is cut by an annular cutter 3-3 in conjunction with an annular groove 1-3, avoiding difficulties in cleaning the composite material after cooling. When the upper mold 3-2 extrudes the composite material in the lower mold 2-1, the linkage plate 3-5 moves downward, causing the spring telescopic sleeve 3-6 to retract. At the same time, it drives the two roller frames 3-7 to rotate to both sides, thereby causing the rollers 3-8 to slide on the top surface of the fixed plate 3-1, which can further extrude the upper mold 3-2, avoiding uneven pressure on the mold caused by only extruding in the middle, which would lead to uneven thickness or different adhesion of the composite material. After the composite material is extruded, the hydraulic cylinder 3-4 is controlled to retract, so that the fixed plate 3-1 and the roller frames 3-7 are reset. Then, the above trial operation steps are repeated to remove the molded composite material. The conical plug 2-5 moves upward to push out the molded composite material for easy handling. When the molded composite material is removed, the conical plug 2-5 is reset to allow for the next molding operation of the composite material.

[0022] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of the equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0023] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A tooling for molding composite materials, characterized in that: include: The base assembly (1), the lower mold assembly (2), and the upper mold assembly (3) are provided. The lower mold assembly (2) is fixed inside the base assembly (1). The upper mold assembly (3) is slidably connected to the base assembly (1). The lower mold assembly (2) and the upper mold assembly (3) are used together. The base assembly (1) includes: a housing (1-1), a slide (1-2), and an annular groove (1-3). The slide (1-2) is fixed on the housing (1-1). The top surface of the housing (1-1) is provided with an opening. The top surface of the housing (1-1) is provided with an annular groove (1-3). The lower mold assembly (2) includes: a lower mold (2-1), an injection unit (2-2), an electric telescopic rod (2-3), and a bracket. (2-4), conical plug (2-5) and pressurizing unit (2-6), a lower mold (2-1) is fixed on the top surface of the inner box (1-1), the inner wall of the lower mold (2-1) is inclined, the opening of the box (1-1) matches the lower mold (2-1), an injection unit (2-2) is fixed on the outer side of the lower mold (2-1), an electric telescopic rod (2-3) is fixed on the bottom surface of the inner box (1-1), a bracket (2-4) is horizontally fixed on the movable end of the electric telescopic rod (2-3), a conical plug (2-5) is fixed on the upper end of the bracket (2-4), the bottom surface of the lower mold (2-1) is provided with a hole that matches the conical plug (2-5), the conical plug (2-5) slides in the hole, the box A pressurizing unit (2-6) is fixed to the bottom surface of the body (1-1). The pressurizing unit (2-6) is fixedly connected to the bracket (2-4) and fixedly connected to the injection unit (2-2). The upper mold assembly (3) includes: a fixing plate (3-1), an upper mold (3-2), an annular cutter (3-3), a hydraulic cylinder (3-4), a linkage plate (3-5), a spring telescopic sleeve (3-6), a roller frame (3-7), a roller (3-8), and a spring (3-9). The fixing plate (3-1) is slidably connected to the slide (1-2). The upper mold (3-2) is fixed to the lower end of the fixing plate (3-1), and the annular cutter (3-3) is fixed to the lower end of the fixing plate (3-1). The annular cutter (3-3) matches the annular groove (1-3). The fixed end of the hydraulic cylinder (3-4) is fixedly connected to the slide (1-2). The movable end of the hydraulic cylinder (3-4) is fixed with a linkage plate (3-5). One end of the spring telescopic sleeve (3-6) is fixedly connected to the linkage plate (3-5). The other end of the spring telescopic sleeve (3-6) is fixedly connected to the fixed plate (3-1). The lower end of the linkage plate (3-5) is symmetrically rotatably connected with roller frames (3-7). Rollers (3-8) are rotatably connected to the two roller frames (3-7). The rollers (3-8) rest against the top surface of the fixed plate (3-1). A spring (3-9) is fixed between the two roller frames (3-7).

2. The tooling for molding composite materials according to claim 1, characterized in that: The injection unit (2-2) includes: an injection tank (2-2-1), an annular plate (2-2-2), a one-way valve (2-2-3), an injection port (2-2-4), a spring telescopic rod (2-2-5), and a sealing plug (2-2-6). The injection tank (2-2-1) is fixed on the outer side of the lower mold (2-1). The annular plate (2-2-2) is slidably sealed inside the injection tank (2-2-1). The one-way valve (2-2-3) is provided on the bottom surface of the injection tank (2-2-1), and an injection port is provided on the side of the injection tank (2-2-1). The inner wall of the injection tank (2-2-1) is horizontally fixed with a spring telescopic rod (2-2-5), and the other end of the spring telescopic rod (2-2-5) is fixed with a sealing plug (2-2-6). The side wall of the lower mold (2-1) is provided with a liquid inlet hole, which communicates with the injection tank (2-2-1). The spring telescopic rod (2-2-5) is set in the liquid inlet hole, and the sealing plug (2-2-6) slides and seals with the liquid inlet hole. There are multiple spring telescopic rods (2-2-5), sealing plugs (2-2-6), and liquid inlets.

3. The tooling for molding composite materials according to claim 2, characterized in that: The pressurizing unit (2-6) includes: a pressurizing tank (2-6-1), a second one-way valve (2-6-2), a piston (2-6-3), and a conduit (2-6-4). The pressurizing tank (2-6-1) is fixed on the bottom surface of the housing (1-1). The second one-way valve (2-6-2) is provided on the side of the pressurizing tank (2-6-1). The piston (2-6-3) is slidably sealed inside the pressurizing tank (2-6-1). The piston (2-6-3) is fixedly connected to the bracket (2-4). One end of the conduit (2-6-4) is fixedly connected to the pressurizing tank (2-6-1), and the other end of the conduit (2-6-4) is fixedly connected to the first one-way valve (2-2-3).

4. A method of using a tooling for molding composite materials according to claim 1, characterized in that: The method includes the following steps: S1: Inject the release agent into the injection tank (2-2-1) through the injection port (2-2-4); S2: The electric telescopic rod (2-3) is energized and extended, which drives the piston (2-6-3) to move upward along the pressurization tank (2-6-1). The electric telescopic rod (2-3) retracts and drives the piston (2-6-3) to move downward, which forces the gas inside the pressurization tank (2-6-1) into the injection tank (2-2-1). S3: Gas enters the injection tank (2-2-1), pushing the annular plate (2-2-2) upward to allow the release agent to enter the injection hole, and pushes the sealing plug (2-2-6), so that the release agent flows out through the gap, replacing the manual work of applying the release agent; S4: Place the composite material in the upper mold (3-2) and control the hydraulic cylinder (3-4) to extend and extrude the composite material in the lower mold (2-1).

Images