Preparation method of mold material composite layer

Abstract

The invention discloses a preparation method of a mold material composite layer, and belongs to the technical field of mold preparation, the technical key point is that the mold material composite layer comprises a gas phase reaction box, a gas inlet, a first mounting disc, a clamping mechanism, a second mounting disc and a redirection mechanism, and the preparation method further comprises the following steps: step 1, opening the gas phase reaction box; a mold needing gas-phase reaction is placed in the gas-phase reaction box, and the mold is placed on the first mounting disc; 2, fixing the mold through clamping mechanisms which are circumferentially distributed on the first mounting disc, closing the gas-phase reaction box, and introducing reaction gas into the gas-phase reaction box through a gas inlet; thirdly, the angle of a second installation disc is changed through a redirection mechanism, the second installation disc drives the angle of a clamping mechanism installed on the second installation disc to be changed, and therefore the angle of the die is changed; and 4, air is introduced into the gas-phase reaction box through the gas inlet, then the gas-phase reaction box is opened, the mold is taken out, and the mold has the advantage that the mold is fully subjected to the coating reaction.

Description

Technical Field

[0001] The present invention relates to the technical field of mold preparation, and more particularly to a method for preparing a composite layer of mold materials. Background Art

[0002] For die-casting molds such as plastic molds and die-casting molds, the product is injected into the mold cavity in a molten state and requires pressure holding and cooling and solidification to form. With the development of automotive lightweighting, a large number of body structural parts adopt the hot stamping process of high-strength steel plates. The boron steel plate is heated to 980 °C, and the metallographic structure is austenite. It is formed and quenched in the mold, and the metallographic structure is transformed into martensite, and the conversion rate needs to be greater than 95%. The structural strength of the part can reach 1500 MP.

[0003] The working conditions of the cavity part of these molds are harsh. Therefore, the mold materials must have properties such as heat resistance and thermal fatigue resistance, and expensive materials must be used. However, there are no such high requirements for other parts of the mold, and ordinary materials can be used completely. Through the surface coating process, one or more coating materials with special properties are deposited on the surface of the mold material, thereby improving the physical, chemical or mechanical properties of the mold surface. The coating materials usually have high hardness, high wear resistance, corrosion resistance, high temperature oxidation resistance, etc. They are commonly used to improve the service life, processing stability and finished product quality of the mold.

[0004] However, the existing devices have the problem that during the generation of the coating on the mold surface, they cannot fully contact and react with the reaction gas, resulting in poor coating generation effect. Summary of the Invention

[0005] Aiming at the deficiencies of the existing technology, the purpose of the embodiments of the present invention is to provide a method for preparing a composite layer of mold materials to solve the problems in the above background art.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] A method for preparing a composite layer of mold materials includes a gas-phase reaction chamber, an air inlet, a first mounting disk, a clamping mechanism, a second mounting disk and a redirecting mechanism, and further includes the following steps:

[0008] Step 1: Open the gas-phase reaction chamber, place the mold to be subjected to gas-phase reaction in the gas-phase reaction chamber, and the mold is placed on the first mounting disk;

[0009] Step 2: Fix the mold through the clamping mechanism circumferentially distributed on the first mounting disk, close the gas-phase reaction chamber, and introduce reaction gas into the gas-phase reaction chamber through the air inlet;

[0010] Step 3: Change the angle of the second mounting disc through the redirecting mechanism. The second mounting disc drives the change of the angle of the clamping mechanism mounted thereon, thereby changing the angle of the mold to ensure sufficient contact between the reaction gas and the mold.

[0011] Step 4: After the reaction time is reached, introduce air into the gas-phase reaction chamber through the air inlet, and then open the gas-phase reaction chamber to take out the mold.

[0012] As a further solution of the present invention, the clamping mechanism includes:

[0013] The first mounting component, which is mounted on the first mounting disc and is circumferentially distributed about the first mounting disc;

[0014] The limiting component, which is fixedly connected to the first mounting component, is movably connected to the clamping component, and one end of the clamping component is fixedly connected to the first mounting component.

[0015] As a further solution of the present invention, the first mounting component includes:

[0016] The mounting plate, which is circumferentially distributed about the first mounting disc and is fixedly connected to the first mounting disc;

[0017] The mounting frame, which is fixedly connected to the mounting plate. The clamping component passes through the mounting frame, and the limiting component is fixedly connected to the mounting frame.

[0018] As a further solution of the present invention, the limiting component includes:

[0019] The mounting sleeve, which is fixedly connected to the mounting frame;

[0020] The limiting groove, which is symmetrically arranged about the mounting sleeve and is movably connected to the clamping component.

[0021] As a further solution of the present invention, the clamping component includes:

[0022] The electric telescopic rod, one end of which is fixedly connected to the mounting plate and passes through the mounting frame;

[0023] The first clamping rod, which is symmetrically arranged about the electric telescopic rod and is rotatably connected to the first clamping rod;

[0024] The second clamping rod, one end of which is movably connected to the first clamping rod, the other end of which is movably connected to the clamping plate, and the second clamping rod is movably connected to the limiting groove.

[0025] As a further solution of the present invention, the redirecting mechanism includes:

[0026] A power component, one end of the power component is fixedly connected to the second mounting disc, the output end of the power component is connected to a redirecting component, and one end of the redirecting component is fixedly connected to the second mounting disc;

[0027] A connecting component, one end of the connecting component is movably connected to the redirecting component, and the other end of the connecting component is fixedly connected to the first mounting disc.

[0028] As a further solution of the present invention, the power component includes:

[0029] A first mounting seat, the first mounting seat is fixedly connected to the second mounting disc, and the first mounting seats are circumferentially distributed with respect to the second mounting disc;

[0030] An electric rod, one end of the electric rod is movably connected to the first mounting seat, and the output end of the electric rod is connected to the redirecting component.

[0031] As a further solution of the present invention, the redirecting component includes:

[0032] A second mounting seat, one end of the second mounting seat is fixedly connected to the second mounting disc, and the second mounting seat is movably connected to a first redirecting seat;

[0033] A redirecting connecting rod, the first redirecting seat is movably connected to the redirecting connecting rod, and the redirecting connecting rod is movably connected to the output end of the electric rod.

[0034] As a further solution of the present invention, the connecting component includes:

[0035] A second redirecting seat, the second redirecting seat is movably connected to the first redirecting seat;

[0036] A connecting seat, the second redirecting seat is movably connected to the connecting seat, and the connecting seat is fixedly connected to the first mounting disc.

[0037] In summary, the embodiments of the present invention have the following beneficial effects compared with the prior art:

[0038] Start the electric telescopic rod. At the same time, the structure of the electric telescopic rod is a combined structure of a round rod and a disc. The electric telescopic rod pushes the symmetrically arranged first clamping rods, and the first clamping rods push the second clamping rods. At this time, since one end of the second clamping rod is movably connected to the limiting groove through a rotating pin, by symmetrically arranging the limiting grooves on both sides of the mounting sleeve, the movement trajectory of the second clamping rod can be restricted through the limiting grooves, ensuring that the second clamping rod rotates. Thus, the second clamping rod can drive the clamping plate to rotate, causing the clamping plates to approach each other and ensuring that the clamping plates can clamp the mold;

[0039] The movement times of the three groups of electric rods are inconsistent. When the three groups of connecting seats pull the first mounting disc installed thereon to move, the inclination angle of the first mounting disc changes, ensuring that the angle of the first mounting disc changes in real time, ensuring that the mold located on the first mounting disc can fully contact the introduced gas, and ensuring that the mold can effectively form a coating.

[0040] To more clearly elaborate on the structural features and functions of the present invention, the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] Figure 1 It is a schematic structural diagram of an embodiment of the invention.

[0042] Figure 2 In the embodiment of the invention Figure 1 Internal structural schematic diagram.

[0043] Figure 3 In the embodiment of the invention Figure 2 Internal structural schematic diagram.

[0044] Figure 4 In the embodiment of the invention Figure 3 Structural schematic diagram of the clamping mechanism in.

[0045] Figure 5 In the embodiment of the invention Figure 4 Internal structural schematic diagram.

[0046] Figure 6 In the embodiment of the invention Figure 3 Cross-sectional view in.

[0047] Figure 7 In the embodiment of the invention Figure 6 Top view.

[0048] Figure 8 In the embodiment of the invention Figure 6 Structural schematic diagram of the redirecting mechanism in.

[0049] Reference numerals: 1 - gas-phase reaction chamber, 2 - rotating cover plate, 3 - air inlet, 4 - connecting threaded pipe, 5 - first mounting disc, 6 - clamping mechanism, 61 - first mounting assembly, 611 - mounting plate, 612 - mounting frame, 62 - limiting assembly, 621 - mounting sleeve, 622 - limiting groove, 63 - clamping assembly, 631 - electric telescopic rod, 632 - first clamping rod, 633 - second clamping rod, 634 - clamping plate, 7 - second mounting disc, 8 - redirecting mechanism, 81 - power assembly, 811 - first mounting seat, 812 - electric rod, 82 - redirecting assembly, 821 - second mounting seat, 822 - first redirecting seat, 823 - redirecting connecting rod, 83 - connecting assembly, 831 - second redirecting seat, 832 - connecting seat. Detailed implementation manners

[0050] In order to make the objectives, technical solutions and advantages of the present invention clearer and more understandable, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0051] The following describes the specific implementation of the present invention in detail with reference to specific embodiments.

[0052] In one embodiment, a method for preparing a composite layer of a mold material, see Figures 1 to 8 , includes a gas-phase reaction chamber 1, an air inlet 3, a first mounting disc 5, a clamping mechanism 6, a second mounting disc 7 and a redirecting mechanism 8, and further includes the following steps:

[0053] Step 1: Open the gas-phase reaction chamber 1, and place the mold to be subjected to gas-phase reaction into the gas-phase reaction chamber 1. The mold is placed on the first mounting disc 5;

[0054] Step 2: Fix the mold through the clamping mechanism 6 distributed circumferentially on the first mounting disc 5, close the gas-phase reaction chamber 1, and introduce reaction gas into the gas-phase reaction chamber 1 through the air inlet 3;

[0055] Step 3: Change the angle of the second mounting disc 7 through the redirecting mechanism 8. The second mounting disc 7 drives the change of the angle of the clamping mechanism 6 mounted thereon, thereby changing the angle of the mold to ensure full contact between the reaction gas and the mold;

[0056] Step 4: After the reaction time is reached, introduce air into the gas-phase reaction chamber 1 through the air inlet 3, then open the gas-phase reaction chamber 1, and take out the mold.

[0057] In this embodiment, the mold material composite layer refers to a multi-layer structure formed on the surface or a local area of the mold material through physical, chemical, mechanical or other methods, which has properties different from those of the matrix material. It is usually composed of two or more layers of materials and has specific strengthening functions, such as improving the hardness, wear resistance, corrosion resistance, fatigue resistance and high-temperature performance of the mold;

[0058] The composite layer is not simply a stack of materials, but through different material structure designs, each layer has a complementary effect in performance, thus significantly improving the comprehensive performance of the entire mold in practical applications. CVD is a method of depositing a coating on the mold surface by chemically reacting reaction gases under high temperature (usually above 900°C). The mold is placed in a reaction furnace and heated to the process temperature (generally about 1000°C); reaction gases ( , , etc.) are introduced; a gas-phase reaction occurs on the mold surface to deposit ceramic hard coatings such as TiC, TiN, SiC, etc.; the deposition is maintained for a certain time to form a coating with a uniform thickness (generally 5-20μm); the temperature is lowered, the furnace is taken out, and post-treatment (such as stress relief, polishing) is carried out.

[0059] In one embodiment, referring to Figures 1 to 8 , the clip mechanism 6 includes:

[0060] The first mounting component 61, the first mounting component 61 is mounted on the first mounting disc 5, and the first mounting component 61 is circumferentially distributed about the first mounting disc 5;

[0061] The limiting component 62, the limiting component 62 is fixedly connected to the first mounting component 61, the limiting component 62 is movably connected to the clamping component 63, and one end of the clamping component 63 is fixedly connected to the first mounting component 61.

[0062] Further, referring to Figures 1 to 8 , the first mounting component 61 includes:

[0063] The mounting plate 611, the mounting plate 611 is circumferentially distributed about the first mounting disc 5, and the mounting plate 611 is fixedly connected to the first mounting disc 5;

[0064] The mounting frame 612, the mounting frame 612 is fixedly connected to the mounting plate 611, the clamping component 63 passes through the mounting frame 612, and the limiting component 62 is fixedly connected to the mounting frame 612.

[0065] Further, referring to Figures 1 to 8 , the limiting component 62 includes:

[0066] An installation sleeve 621 is fixedly connected to the installation frame 612.

[0067] A limiting groove 622 is symmetrically arranged with respect to the installation sleeve 621, and the limiting groove 622 is movably connected to the clamping assembly 63.

[0068] Further, referring to Figures 1 to 8 , the clamping assembly 63 includes:

[0069] An electric telescopic rod 631, one end of the electric telescopic rod 631 is fixedly connected to the mounting plate 611, and the electric telescopic rod 631 penetrates through the installation frame 612.

[0070] A first clamping rod 632 is symmetrically arranged with respect to the electric telescopic rod 631, and the first clamping rod 632 is rotatably connected to the first clamping rod 632.

[0071] A second clamping rod 633, one end of the second clamping rod 633 is movably connected to the first clamping rod 632, the other end of the second clamping rod 633 is movably connected to the clamping plate 634, and the second clamping rod 633 is movably connected to the limiting groove 622.

[0072] In this embodiment, the gas-phase reaction chamber 1 is opened, and the mold to be subjected to the gas-phase reaction is placed into the gas-phase reaction chamber 1. The mold is placed on the first mounting disc 5. A rotating cover plate 2 is provided on the gas-phase reaction chamber 1, and the rotating cover plate 2 is movably connected to the gas-phase reaction chamber 1. When the rotating cover plate 2 is closed, the gas-phase reaction chamber 1 is a sealed structure. At the same time, air inlets 3 are symmetrically arranged on both sides of the gas-phase reaction chamber 1, and connecting threaded pipes 4 are arranged outside the air inlets 3, and the inlet pipe can be more firmly connected through the connecting threaded pipes 4 to ensure that the introduced gas does not leak out.

[0073] The electric telescopic rod 631 is a power component. The electric telescopic rod 631 is started. At the same time, the structure of the electric telescopic rod 631 is a combined structure of a round rod and a disc. The electric telescopic rod 631 pushes the symmetrically arranged first clamping rods 632, and the first clamping rods 632 push the second clamping rods 633. At this time, since one end of the second clamping rod 633 is movably connected to the limiting groove 622 through a rotating pin, by symmetrically arranging the limiting grooves 622 on both sides of the installation sleeve 621, the movement track of the second clamping rod 633 can be restricted through the limiting grooves 622 to ensure that the second clamping rod 633 rotates. Thus, the second clamping rod 633 can drive the clamping plate 634 to rotate, so that the clamping plates 634 approach each other to ensure that the clamping plates 634 can clamp the mold.

[0074] In one embodiment, referring to Figures 1 to 8 , the redirecting mechanism 8 includes:

[0075] A power component 81, one end of the power component 81 is fixedly connected to the second mounting disc 7, the output end of the power component 81 is connected to a redirecting component 82, and one end of the redirecting component 82 is fixedly connected to the second mounting disc 7;

[0076] A connecting component 83, one end of the connecting component 83 is movably connected to the redirecting component 82, and the other end of the connecting component 83 is fixedly connected to the first mounting disc 5.

[0077] Further, referring to Figures 1 to 8 , the power component 81 includes:

[0078] A first mounting seat 811, the first mounting seat 811 is fixedly connected to the second mounting disc 7, and the first mounting seat 811 is circumferentially distributed with respect to the second mounting disc 7;

[0079] An electric rod 812, one end of the electric rod 812 is movably connected to the first mounting seat 811, and the output end of the electric rod 812 is connected to the redirecting component 82.

[0080] Further, referring to Figures 1 to 8 , the redirecting component 82 includes:

[0081] A second mounting seat 821, one end of the second mounting seat 821 is fixedly connected to the second mounting disc 7, and the second mounting seat 821 is movably connected to a first redirecting seat 822;

[0082] A redirecting connecting rod 823, the first redirecting seat 822 is movably connected to the redirecting connecting rod 823, and the redirecting connecting rod 823 is movably connected to the output end of the electric rod 812.

[0083] Further, referring to Figures 1 to 8 , the connecting component 83 includes:

[0084] A second redirecting seat 831, the second redirecting seat 831 is movably connected to the first redirecting seat 822;

[0085] A connecting seat 832, the second redirecting seat 831 is movably connected to the connecting seat 832, and the connecting seat 832 is fixedly connected to the first mounting disc 5.

[0086] In this embodiment, after the clamping mechanism 6 distributed circumferentially on the first mounting disc 5 fixes the mold, there are three groups of electric rods 812. The three groups of electric rods 812 do not interfere with each other and work separately. When the electric rods 812 are started, the electric rods 812 push the redirecting connecting rod 823. At the same time, both the first redirecting seat 822 and the second redirecting seat 831 are square hollow structures, so that the redirecting connecting rod 823 is rotatably connected to the hollow part of the first redirecting seat 822. At the same time, since the first redirecting seat 822 is rotatably connected to the second mounting seat 821, the first redirecting seat 822 can rotate. The first redirecting seat 822 drives the second redirecting seat 831 to rotate. At this time, the second redirecting seat 831 drives the connecting seat 832 to move, and the connecting seat 832 pulls the first mounting disc 5 mounted thereon to move;

[0087] Since the movement times of the three groups of electric rods 812 are inconsistent, when the three groups of connecting seats 832 pull the first mounting disc 5 mounted thereon to move, the inclination angle of the first mounting disc 5 changes, ensuring that the angle of the first mounting disc 5 changes in real time, ensuring that the mold located on the first mounting disc 5 can fully contact the introduced gas, and ensuring that the mold can effectively form a coating.

[0088] The working principle of the present invention is:

[0089] Start the electric telescopic rod 631. At the same time, the structure of the electric telescopic rod 631 is a combination structure of a round rod and a disc. The electric telescopic rod 631 pushes the symmetrically arranged first clamping rod 632, and the first clamping rod 632 pushes the second clamping rod 633. At this time, since one end of the second clamping rod 633 is movably connected to the limit groove 622 through a rotating pin, and the limit grooves 622 are symmetrically arranged on both sides of the mounting sleeve 621, the movement trajectory of the second clamping rod 633 can be restricted through the limit grooves 622 to ensure that the second clamping rod 633 rotates. Thus, the second clamping rod 633 can drive the clamping plate 634 to rotate, so that the clamping plates 634 approach each other to ensure that the clamping plates 634 can clamp the mold;

[0090] Since the movement times of the three groups of electric rods 812 are inconsistent, when the three groups of connecting seats 832 pull the first mounting disc 5 mounted thereon to move, the inclination angle of the first mounting disc 5 changes, ensuring that the angle of the first mounting disc 5 changes in real time, ensuring that the mold located on the first mounting disc 5 can fully contact the introduced gas, and ensuring that the mold can effectively form a coating.

[0091] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A method for preparing a composite layer of mold material, comprising a gas phase reaction box, an air inlet, a first mounting disc, a clamping mechanism, a second mounting disc and a redirecting mechanism, characterized in that: The following steps are also included: Step 1: Open the gas phase reaction box, place the mold that needs to undergo gas phase reaction into the gas phase reaction box, and place the mold on the first mounting disc; Step 2: Fix the mold by means of the circumferentially distributed clamping mechanism on the first mounting disc, close the gas phase reaction box, and introduce the reaction gas into the gas phase reaction box through the air inlet; Step 3: The angle of the second mounting disc is changed by the redirection mechanism, and the second mounting disc drives the angle of the clamping mechanism installed thereon to change, thereby changing the angle of the mold to ensure that the reaction gas is in full contact with the mold; Step 4: After the reaction time is reached, air is introduced into the gas phase reaction box through the air inlet, and then the gas phase reaction box is opened and the mold is taken out.

2. The method for preparing a mold material composite layer according to claim 1, characterized in that: The clamping mechanism comprises: A first mounting assembly, wherein the first mounting assembly is mounted on the first mounting disk, and the first mounting assembly is distributed around the circumference of the first mounting disk; A limiting component, wherein the limiting component is fixedly connected to the first mounting component, the limiting component is movably connected to the clamping component, and one end of the clamping component is fixedly connected to the first mounting component.

3. The method for preparing a mold material composite layer according to claim 2, characterized in that: The first installation component comprises: A mounting plate, the mounting plate is distributed around the circumference of the first mounting disc, and the mounting plate is fixedly connected to the first mounting disc; The mounting frame is fixedly connected to the mounting plate, the clamping assembly passes through the mounting frame, and the limiting assembly is fixedly connected to the mounting frame.

4. The method for preparing a mold material composite layer according to claim 3, characterized in that: The limiting component comprises: A mounting sleeve, the mounting sleeve being fixedly connected to the mounting frame; A limiting groove is symmetrically arranged with respect to the mounting sleeve, and the limiting groove is movably connected to the clamping assembly.

5. The method for preparing a mold material composite layer according to claim 4, characterized in that: The clamping assembly comprises: An electric telescopic rod, one end of which is fixedly connected to the mounting plate, and the electric telescopic rod passes through the mounting frame; A first clamping rod, the first clamping rod is symmetrically arranged with respect to the electric telescopic rod, and the first clamping rod is rotatably connected to the first clamping rod; A second clamping rod, one end of the second clamping rod is movably connected to the first clamping rod, the other end of the second clamping rod is movably connected to the clamping plate, and the second clamping rod is movably connected to the limiting groove.

6. The method for preparing a mold material composite layer according to claim 1, characterized in that: The redirection mechanism comprises: A power assembly, one end of which is fixedly connected to the second mounting disc, an output end of which is connected to a redirection assembly, one end of which is fixedly connected to the second mounting disc; A connecting component, one end of which is movably connected to the redirecting component, and the other end of which is fixedly connected to the first mounting disc.

7. The method for preparing a mold material composite layer according to claim 6, characterized in that: The power assembly comprises: A first mounting seat, the first mounting seat is fixedly connected to the second mounting disc, and the first mounting seat is distributed around the circumference of the second mounting disc; An electric rod, one end of which is movably connected to the first mounting seat, and an output end of the electric rod is connected to the redirection component.

8. The method for preparing a mold material composite layer according to claim 7, characterized in that: The redirection assembly comprises: a second mounting seat, one end of which is fixedly connected to the second mounting disc, and the second mounting seat is movably connected to the first redirecting seat; A redirecting connecting rod, wherein the first redirecting seat is movably connected to the redirecting connecting rod, and the redirecting connecting rod is movably connected to the output end of the electric rod.

9. The method for preparing a mold material composite layer according to claim 8, characterized in that: The connection component comprises: a second redirecting seat, the second redirecting seat being movably connected to the first redirecting seat; A connecting seat, wherein the second redirecting seat is movably connected to the connecting seat, and the connecting seat is fixedly connected to the first mounting disc.

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