Vacuum hot press molding device and hot press molding method

Abstract

The invention belongs to the technical field of hot pressing, and particularly relates to a vacuum hot pressing forming device and a hot pressing forming method. The vacuum hot press molding device comprises a heating structure which is fixedly arranged and used for heating a target object; the material carrying structure is slidably arranged in the vertical direction and located below the heating structure, and the target object is located on the material carrying structure; the driving structure is connected with the material loading structure; the driving structure drives the material carrying structure to move towards the heating structure, and the material carrying structure drives the target object to abut against and press the heating structure upwards, so that the heating structure heats the target object in a heat conduction mode; or the driving structure drives the material carrying structure to move in the direction away from the heating structure, so that the target object is separated from the heating structure, the amorphous alloy is prevented from being influenced by the temperature of the heating structure, and crystallization of the amorphous alloy is avoided.

Description

Technical Field

[0001] The invention belongs to the technical field of hot pressing, and in particular relates to a vacuum hot pressing forming device and a hot pressing forming method. Background Art

[0002] Crystalline alloy, also known as metallic glass, is a new type of material that was born in the 1970s. Amorphous alloys are similar to the microstructure of glass at the microscopic level. They do not have the crystal structure of ordinary elemental metals and alloy metals. The metal atoms of amorphous alloys are ordered in the short range and disordered in the long range in the microscopic three-dimensional structure. It is precisely because of this special atomic arrangement that amorphous alloys have physical, chemical and other mechanical properties different from other metal materials.

[0003] Amorphous alloys have unique thermoplastic properties. They can achieve structural forming of bulk amorphous alloys and bulk forming of powdered amorphous alloys at lower temperatures (glass transition temperature) and through smaller molding pressures. At the same time, amorphous alloys can also be used as metal glue to bond other materials, such as metal alloys, catalyst powders, plastics, glass, etc., and have broad and long-term application scenarios.

[0004] The surface structure forming of amorphous alloys, the manufacturing of large amorphous alloys, and the forming of complex amorphous alloy parts have received great attention in academia and industrial applications. However, there are few equipment for hot pressing of amorphous alloys on the market, and the forming quality also has many shortcomings. For example, during the heating process of amorphous alloys, the entire mold cavity is heated, which is prone to uneven heating and difficult to control the sample temperature, resulting in problems such as easy crystallization of the amorphous alloy after hot pressing and poor forming quality. Summary of the invention

[0005] The purpose of the embodiments of the present application is to provide a vacuum hot pressing forming device, aiming to solve the problem of how to improve the forming quality of amorphous alloys.

[0006] To achieve the above purpose, the technical solution adopted in this application is:

[0007] In a first aspect, a vacuum hot pressing forming device is provided for hot pressing a target object, the vacuum hot pressing forming device comprising:

[0008] A heating structure, fixedly arranged and used for heating the target object;

[0009] a loading structure, slidably disposed in a vertical direction and located below the heating structure, wherein the target object is located on the loading structure; and

[0010] A driving structure connected to the loading structure;

[0011] The driving structure drives the loading structure to move toward the heating structure, and the loading structure drives the target object to abut against and press upward the heating structure so that the heating structure heats the target object by heat conduction; or the driving structure drives the loading structure to move in a direction away from the heating structure so that the target object is separated from the heating structure.

[0012] In some embodiments, the vacuum hot pressing forming device also includes a cooling structure, which includes a material transfer drive and a guide seat with a cooling zone, the cooling zone and the heating structure are staggered in a horizontal direction, the loading structure is slidably arranged along the horizontal direction, and the material transfer drive is used to drive the loading structure to slide along the horizontal direction to the cooling zone.

[0013] In some embodiments, the guide seat is provided with a guide hole, the guide hole and the cooling zone are arranged on the same surface of the guide seat at intervals, and the driving structure is connected to the loading structure via the guide hole.

[0014] In some embodiments, the guide seat is further provided with a positioning cavity, the guide hole is provided at one end of the cavity bottom of the positioning cavity, and the cooling zone is located at the other end of the cavity bottom of the positioning cavity.

[0015] In some embodiments, the shapes of the cavity walls at both ends of the positioning cavity are adapted to the shape of the side surface of the loading structure.

[0016] In some embodiments, the cooling structure further includes a cooling pipe, and the cooling pipe is used to transport cooling gas to the target located in the cooling zone.

[0017] In some embodiments, the driving structure includes a lifting pressure head connected to the loading structure and a driving component for driving the lifting pressure head, and the lifting pressure head passes through the guide hole.

[0018] In some embodiments, the driving assembly includes a screw connected to the lifting and lowering head, a lift connected to the screw, and a driver connected to the lift.

[0019] In some embodiments, the vacuum hot pressing forming device also includes a hot pressing shell having a vacuum cavity, the heating structure and the loading structure are both located in the vacuum cavity, the hot pressing shell is provided with an avoidance hole connected to the vacuum cavity, and the output end of the driving structure is slidably and sealedly disposed in the avoidance hole and connected to the loading structure.

[0020] In a second aspect, the embodiment of the present application further provides a hot pressing forming method, which is implemented by the vacuum hot pressing forming device, and the hot pressing forming method comprises the following steps:

[0021] The heating structure is fixedly arranged;

[0022] The material-carrying structure is slidably disposed in a vertical direction and is located below the heating structure, and the target object is located on an upper surface of the material-carrying structure;

[0023] The driving structure drives the material-carrying structure to move toward the heating structure, and the material-carrying structure drives the target object to abut against and press upward the heating structure, so that the heat of the heating structure is transferred to the target object;

[0024] The driving structure drives the loading structure to move in a direction away from the heating structure, so that the target object is separated from the heating structure.

[0025] The beneficial effect of the present application is that by setting the heating structure above the target object, after the driving structure drives the loading structure to move upward a certain distance, the amorphous alloy abuts the heating structure, the heat of the heating structure can be transferred to the amorphous alloy, and the temperature of the amorphous alloy can quickly rise to the glass transition temperature, the driving structure drives the loading structure to press the heating structure upward, so that the amorphous alloy at the glass transition temperature can be hot-pressed, and after the hot-pressing is completed, the driving structure drives the loading structure to descend, and at the same time the formed amorphous alloy is separated from the heating structure to avoid crystallization of the amorphous alloy. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments or exemplary technical descriptions will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0027] Figure 1 It is a schematic diagram of the three-dimensional structure of the vacuum hot pressing forming device provided in an embodiment of the present application;

[0028] Figure 2 yes Figure 1 A schematic diagram of the three-dimensional structure of the driving structure, the material loading structure and the heating structure of the vacuum hot pressing forming device;

[0029] Figure 3 yes Figure 1 A schematic diagram of a three-dimensional structure of a cooling structure of a vacuum hot pressing forming device;

[0030] Figure 4 yes Figure 1 A schematic diagram of a three-dimensional structure of a heating structure of a vacuum hot pressing forming device;

[0031] Figure 5is a cross-sectional schematic diagram of a hot pressing shell in another embodiment of the present application;

[0032] Figure 6 This is a schematic diagram of assembling a column and a base plate provided in yet another embodiment of the present application;

[0033] Figure 7 This is a flow chart of a hot pressing forming method provided in yet another embodiment of the present application.

[0034] Among them, the reference numerals in the figure are:

[0035] 100, vacuum hot pressing forming device; 204, box structure; 013, cavity door; 201, material loading structure; 202, heating structure; 21, heating block; 13, fixed bracket; 12, first heat insulation board; 14, second heat insulation board; 40, guide seat; 42, material transfer driver; 203, drive structure; 29, lifting and lowering head; 291, drive assembly; 50, display screen; 22, lifting and lowering driver; 34, elevator; 25, coupling; 30, pressure sensor; 401, guide hole; 402, cooling zone; 403, positioning cavity; 01, hot pressing shell; 011, vacuum cavity; 41, cooling pipe; 012, avoidance hole; 211, heating rod; 421, longitudinal rod; 422, cross rod; DETAILED DESCRIPTION

[0036] In order to make the purpose, technical solution and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with 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 application.

[0037] It should be noted that when a component is referred to as being "fixed on" or "disposed on" another component, it may be directly on the other component or indirectly on the other component. When a component is referred to as being "connected to" another component, it may be directly or indirectly connected to the other component. The orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to the specific circumstances. The terms "first" and "second" are only used for the purpose of convenience of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features. The meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0038] See also Figures 1 to 3The embodiment of the present application provides a vacuum hot pressing forming device 100 for hot pressing a target object, which may be an amorphous alloy. The vacuum hot pressing forming device 100 includes a heating structure 202, a loading structure 201 and a driving structure 203.

[0039] The heating structure 202 is fixedly arranged and used to heat the amorphous alloy. The heating structure 202 can heat the amorphous alloy to its glass transition temperature by means of resistance heating, thereby facilitating subsequent hot pressing of the amorphous alloy.

[0040] See also Figures 2 to 4 The loading structure 201 is slidably arranged in the vertical direction and is located below the heating structure 202. The amorphous alloy can be located on the loading structure 201. It can be understood that the amorphous alloy is arranged on the upper surface of the loading structure 201. The amorphous alloy can rise or fall synchronously with the loading structure 201 relative to the heating structure 202.

[0041] See also Figures 2 to 4 , the driving structure 203 is connected to the material loading structure 201; the driving structure 203 drives the material loading structure 201 to move toward the heating structure 202, and the material loading structure 201 drives the amorphous alloy to abut against and press the heating structure 202 upward, so that the heating structure 202 heats the target object by heat conduction, and enables the amorphous alloy to be hot-pressed. By heat conduction, heat can be quickly transferred to the amorphous alloy, and the temperature of the amorphous alloy rises to its glass transition temperature, so that the hot-pressing of the amorphous alloy can be achieved; and by heat conduction, heat can also be accurately transferred to the amorphous alloy to avoid heat waste.

[0042] After the hot pressing forming is completed, the driving structure 203 drives the loading structure 201 to move in a direction away from the heating structure 202, that is, drives the loading structure 201 to move downward. At the same time, the amorphous alloy after hot pressing moves downward synchronously with the loading structure 201, so that the amorphous alloy is out of the heating range of the heating structure 202, preventing heat from continuing to be transferred to the formed amorphous alloy, avoiding the temperature of the heating structure 202 from affecting the formed amorphous alloy, thereby avoiding the crystallization of the formed amorphous alloy and improving the forming quality.

[0043] See also Figures 2 to 4The vacuum hot pressing forming device 100 provided in the embodiment of the present application sets the heating structure 202 above the target object. After the driving structure 203 drives the loading structure 201 to move upward a certain distance, the amorphous alloy abuts the heating structure 202. The heat of the heating structure 202 can be transferred to the amorphous alloy, and the temperature of the amorphous alloy can quickly rise to the glass transition temperature. The driving structure 203 drives the loading structure 201 to press the heating structure 202 upward, so that the amorphous alloy at the glass transition temperature can be hot pressed. After the hot pressing is completed, the driving structure 203 drives the loading structure 201 to descend, and the formed amorphous alloy is separated from the heating structure 202 to prevent the amorphous alloy from crystallizing.

[0044] See also Figures 2 to 4 Optionally, the amorphous alloy can be placed in a forming mold, the forming mold is placed on the loading structure 201, and the heating structure 202 heats the amorphous alloy by heating the forming mold. At the same time, when the loading structure 201 presses the heating structure 202 upward, the forming mold can perform hot pressing on the amorphous alloy, thereby processing a certain shape or structure on the surface of the amorphous alloy sample, and can also process micro-nano structures on its surface or prepare other micro parts, or convert powder-type or thin-strip amorphous alloy materials into amorphous alloy samples of specific shapes, such as blocks or columns.

[0045] See also Figures 2 to 4 It can be understood that by fixing the heating structure 202 on the top of the device and moving the material loading structure 201 up and down in the vertical direction through the driving structure 203, it is ensured that the heat can be accurately transferred to the amorphous alloy. The driving structure 203 moves the material loading structure 201 in the vertical direction, providing an up and down pressing function, so that the heat transfer is concentrated and evenly transferred to the molding die, avoiding lateral heat loss or heat diffusion.

[0046] Amorphous alloys are prone to crystallization after heating, resulting in degradation of their physical properties. The vacuum hot pressing forming device 100 can hot press the amorphous alloy on the one hand, and on the other hand, quickly remove the amorphous alloy from the heating structure 202 after the hot pressing is completed, thereby avoiding the problem of continuous heating time being too long and preventing the amorphous alloy from crystallizing due to long exposure to high temperature.

[0047] Optionally, the material-carrying structure 201 may be an insulation block made of a composite insulation material. The insulation block may be made of mica or asbestos. There is no limitation here and the material may be selected according to actual conditions.

[0048] See also Figures 2 to 4In one embodiment, the vacuum hot pressing forming device 100 further includes a cooling structure, the cooling structure includes a material transfer driver 42 and a guide seat 40 having a cooling zone 402, the cooling zone 402 and the heating structure 202 are arranged in a horizontally offset manner, the material loading structure 201 is arranged to slide in the horizontal direction, and the material transfer driver 42 is used to drive the material loading structure 201 to slide in the horizontal direction to the cooling zone 402. The material transfer driver 42 can be an electric push rod or other linear driver, and the material transfer driver 42 can also be a cylinder, which is not limited here and can be selected according to actual conditions.

[0049] See also Figures 2 to 4 Optionally, by displacing the cooling zone 402 and the heating structure 202, the loading structure 201 can be moved between different temperature zones, so that the target object is immediately transferred to the cooling zone 402 for cooling after hot pressing is completed, so as to avoid the heat of the heating structure 202 from radiating to the amorphous alloy, so that the amorphous alloy after hot pressing will not be affected by the high temperature, and the crystallization of the amorphous alloy is avoided. The loading structure 201 can be driven to slide in the horizontal direction by the material transfer driver 42, so that the loading structure 201 drives the amorphous alloy to slide in the horizontal direction, so that the amorphous alloy can be quickly moved from the radiation range of the heating structure 202 to the cooling zone 402, avoiding staying in a high temperature environment for too long, thereby avoiding the crystallization of the amorphous alloy.

[0050] See also Figure 3 In some embodiments, the cooling structure also includes a longitudinal rod 421 connected to a material transfer drive 42 and a transverse rod 422 connected to the longitudinal rod 421. The axial direction of the transverse rod 422 is perpendicular to the axial direction of the longitudinal rod 421. The transverse rod 422 can abut against the loading structure 201. The material transfer drive 42 drives the longitudinal rod 421 to move in a horizontal direction, so that the transverse rod 422 abuts against the loading structure 201 and drives the loading structure 201 to move to the cooling zone 402.

[0051] It is understandable that the cross bar 422 and the loading structure 201 can be detachably connected. For example, magnets are provided on both the cross bar 422 and the loading structure 201. The two magnets are magnetically connected, so that the loading structure 201 can be driven to reciprocate in the horizontal direction through the cross bar 422.

[0052] See also Figures 2 to 4 In one embodiment, the cooling structure further includes a cooling pipe 41 , which is used to transport cooling gas to the amorphous alloy located in the cooling zone 402 , and the cooling zone 402 is located directly below the cooling pipe 41 .

[0053] Optionally, the cooling gas may be low-temperature nitrogen, and the cooling pipe 41 sprays nitrogen toward the amorphous alloy in the cooling zone 402, thereby cooling the amorphous alloy. The cooling pipe 41 delivers cooling gas to the cooling zone 402 to achieve efficient cooling of the amorphous alloy. The cooling gas can quickly reduce the temperature of the amorphous alloy and prevent local overheating or overcooling caused by uneven ambient temperature during the cooling process.

[0054] It can be understood that since the amorphous alloy after hot pressing is located in the cooling zone 402, its own temperature is not affected by the heating structure 202, thereby avoiding the residual temperature of the heating structure 202 from heating the amorphous alloy again, solving the problem of easy crystallization of the amorphous alloy during re-hot pressing, and increasing the cooling rate. It is also possible to monitor the actual temperature changes of the amorphous alloy during the cooling process in real time, providing guidance for the improvement of subsequent hot pressing processes.

[0055] See also Figures 2 to 4 In one embodiment, the guide seat 40 is provided with a guide hole 401 , the guide hole 401 and the cooling zone 402 are spaced apart and arranged on the same surface of the guide seat 40 , and the driving structure 203 is connected to the loading structure 201 via the guide hole 401 .

[0056] Optionally, the setting of the guide hole 401 provides good guiding support for the movement of the loading structure 201, ensuring that the loading structure 201 always remains stable during the vertical sliding process, avoiding the displacement or uneven force of the amorphous alloy due to the unstable displacement of the loading structure 201 during the hot pressing process.

[0057] See also Figures 2 to 4 The cooling zone 402 and the guide hole 401 are distributed on the same surface of the guide seat 40 and are staggered. In this way, after the target object is hot-pressed, it can directly slide into the cooling zone 402, avoiding unnecessary multi-step processing, simplifying the operation process, and improving the fluency and efficiency of the entire hot-pressing process.

[0058] See also Figures 2 to 4 In one embodiment, the guide seat 40 is also provided with a positioning cavity 403, the guide hole 401 is opened at one end of the bottom of the positioning cavity 403, the cooling zone 402 is located at the other end of the bottom of the positioning cavity 403, and the shape of the cavity walls at both ends of the positioning cavity 403 is adapted to the shape of the side surface of the loading structure 201.

[0059] Optionally, the positioning cavity 403 is waist-shaped, and the guide hole 401 and the cooling zone 402 are respectively located at opposite ends of the waist-shaped hole. By setting the positioning cavity 403 in the guide seat 40, the loading structure 201 is circular in shape, so that when the loading structure 201 is located in the cooling zone 402, it can fit tightly with the cavity wall of the positioning cavity 403, thereby enhancing the rapid positioning and stability of the loading structure 201 after sliding into place. This precise adaptation reduces the possible jitter or deviation of the loading structure 201, and ensures that the loading structure 201 remains in position during the reciprocating sliding process, and ensures that the position of the loading structure 201 during the hot pressing and cooling processes remains unchanged, thereby improving the accuracy of hot pressing and cooling.

[0060] See also Figures 2 to 4 In one embodiment, the driving structure 203 includes a lifting head 29 and a driving assembly 291 for driving the lifting head 29 . The lifting head 29 is provided with a guide hole 401 and is connected to the loading structure 201 .

[0061] Optionally, the loading structure 201 is connected via the lifting head 29, so that the loading structure 201 can move precisely in the vertical direction. The lifting head 29 passes through the guide hole 401, which ensures the stability of the loading structure 201 during the hot pressing process, and ensures that the pressure distribution during the hot pressing process is uniform, avoiding deformation or performance degradation of the target object due to uneven pressure. The guide hole 401 also guides the movement of the lifting head 29.

[0062] See also Figures 2 to 4 In one embodiment, the driving assembly 291 includes a screw connected to the lifting head 29, an elevator 34 connected to the screw, and a lifting driver 22 connected to the elevator 34. The lifting driver 22 can be a servo motor. The servo motor can provide a power source and can start and stop accurately.

[0063] The driving assembly 291 also includes: a reducer, a coupling 25, a guide rail mounting plate, an optical axis locking assembly, a guide rail slider assembly, a screw sleeve locking assembly and a screw sleeve fixing seat. The reducer is used to increase the load capacity of the output end; and the reducer is installed on the reducer mounting seat, and the reducer is fixed by the reducer mounting seat; the coupling 25 is used to connect the reducer and the elevator 34; the guide rail mounting plate, the optical axis locking assembly, the guide rail slider assembly, the screw sleeve locking assembly, and the screw sleeve fixing seat are used to lock the freedom of rotation of the screw sleeve around the Z axis to prevent the pressure sensor 30 from failing and ensure that the lifting and lowering pressure head 29 only performs up and down reciprocating motion. At the same time, the use of the guide rail slider assembly and the oil-free bushing ensures the straightness of the reciprocating motion of the lifting and lowering pressure head 29 and the stability of the pressure output; the rise or fall of the lifting and lowering pressure head 29 drives the molding mold to complete the rise or fall. The pressure sensor 30 is connected under the lifting and lowering pressure head 29, and the pressure signal of the pressure sensor 30 can be transmitted to the PLC in real time and displayed on the touch screen.

[0064] See also Figures 2 to 4 The pressure sensor 30 arranged on the screw sleeve can display the real pressure value acting on the forming mold in real time. The screw sleeve locking assembly on the screw sleeve, with the assistance of the guide rails on both sides, greatly increases the stability of the pressure and motion output. The elevator 34 has a four-stage motion, which includes fast motion when unloaded, medium-speed motion when the forming mold is about to contact the heating structure 202, low-speed motion during hot pressing, and fast motion of the elevator 34 resetting after hot pressing is completed. The four-stage motion greatly reduces the time of hot pressing and avoids the forming mold and the heating structure 202 from being subjected to high-speed impact.

[0065] See also Figures 2 to 4 In one embodiment, the vacuum hot pressing forming device 100 also includes a hot pressing shell 01 having a vacuum cavity 011, the heating structure 202 and the loading structure 201 are both located in the vacuum cavity 011, the hot pressing shell 01 is provided with an avoidance hole 012 connected to the vacuum cavity 011, the output end of the driving structure 203 is slidably and sealedly arranged in the avoidance hole 012 and connected to the loading structure 201, and the lifting pressure head 29 penetrates into the vacuum cavity 011 through the avoidance hole 012.

[0066] See also Figures 2 to 4 The material of the hot pressing shell 01 is 304 stainless steel, and the sealing of the cavity is ensured by a full welding process. A cavity door 013 is provided on the surface of the hot pressing shell 01, and an observation window is provided on the cavity door 013, and a rubber sealing ring is provided at the cavity door 013. The side surface of the hot pressing shell 01 is welded with a KF series vacuum flange, and is equipped with multiple KF series quick-change connectors, which are convenient for connection with vacuum pumps, vacuum silicon tubes, aviation plugs and other components. The observation window adopts a CF series vacuum flange with quartz glass in the middle, which is convenient for operators to observe the internal situation of the vacuum cavity 011. A sealing assembly is provided at the avoidance hole 012, and the sealing assembly includes a dynamic sealing ring, a sealing ring support and a sealing flange to ensure the vacuum degree of the lifting and lowering pressure head 29 during the reciprocating motion in the vacuum cavity 011.

[0067] The hot pressing shell 01 is the generating component of the hot pressing process. The vacuum chamber 011 is small in size and can quickly achieve a vacuum environment. The hot pressing shell 01 is externally connected with a variety of quick-change connectors, which is convenient for disassembly and assembly and maintenance. The hot pressing shell 01 is provided with an observation window, and the operator can observe the situation inside the vacuum chamber 011 in real time from the outside, solving the problem of easy oxidation of amorphous alloys.

[0068] The amorphous alloy is heated by heat conduction through the heating structure 202, so that the hot pressing shell 01 is prevented from being heated as a whole. Therefore, after the hot pressing is completed, the hot pressing shell 01 can still maintain a low temperature state, preventing the residual temperature of the hot pressing shell 01 from affecting the amorphous alloy.

[0069] Optionally, the cooling pipe 41 is threadedly connected to a nitrogen cooling KF16 quick-change joint pipe on the hot-pressing housing 01 and is externally connected to a cold nitrogen source.

[0070] See also Figures 2 to 4 In some embodiments, the heating structure 202 includes a heating block 21 located above the amorphous alloy and having a heating hole, a heating rod 211 disposed in the heating hole, and a fixing bracket 13 for fixing the heating block 21, wherein the fixing bracket 13 is connected to the inner wall of the vacuum chamber 011. A plurality of heating holes and heating rods 211 are arranged, and each heating rod 211 is respectively located in each heating hole. The heating rod 211 may be a resistance heating rod.

[0071] See also Figures 4 to 6 There are two fixed brackets 13, which are respectively located at the two ends of the heating block 21, and a first thermal insulation board 12 is also provided on the upper surface of the heating block 21, and the first thermal insulation board 12 can block the heat between the heating block 21 and the inner wall of the vacuum chamber 011; second thermal insulation boards 14 are also provided on both sides of the heating block 21, and the fixed brackets 13 can also provide installation positions for the second thermal insulation boards 14; the second thermal insulation boards 14 can isolate the heat between the heating block 21 and the fixed brackets 13.

[0072] It is understandable that a first heat insulation plate 12 or a second heat insulation plate 14 can also be set between the loading structure 201 and the lifting head 29 to isolate the heat transfer between the molding mold and the lifting head 29; at the same time, the side wall of the molding mold is provided with an installation position for a PT100 temperature sensor, which can transmit the temperature signal of the amorphous alloy in the molding mold to the PLC in real time, and then display it on the touch screen.

[0073] See also Figures 4 to 6 Optionally, the heating block 21 is a hard alloy, and a PT100 temperature sensor installation position is also provided on it. The heating rod 211 will conduct heat to the heating block 21. Multiple heating rods 211 can be provided. The PT100 temperature sensor will transmit the temperature signal on the heating block 21 to the PLC in real time, and then display it on the touch screen. The contact heating method is adopted, that is, the heating block 21 is in direct contact with the forming mold, the heat conduction speed is fast, and after the heating block 21 is separated from the forming mold, the residual temperature of the heating block 21 will not affect the forming mold, thereby avoiding the crystallization of the amorphous alloy.

[0074] See also Figure 1 and Figure 6Optionally, the vacuum hot pressing forming device 100 further includes a box structure 204, which includes a hood assembly, a fixed top plate 38, a column 37, a bottom plate 36, and an electric control board assembly 39. The hood assembly includes a front hood and a rear hood, and doors are provided on both sides and the back for easy maintenance and repair. It is provided with installation positions for components such as an emergency stop switch, a start switch, and a touch screen. Fans are installed on both sides to dissipate heat for electrical components such as PLC and a lifting drive 22; the fixed top plate 38 is used to fix the hot pressing housing 01 and is a pressure-bearing surface; the column 37 is the skeleton of the box structure 204, connecting the fixed top plate 38 and the bottom plate 36; the bottom plate 36 is an installation carrier for components such as the lift 34 and the servo motor; the electric control board assembly 39 is installed with electrical components such as a wire trough, an air switch, a PLC, a thermostat, a pressure transmitter, and a lifting drive 22.

[0075] By arranging the heating structure 202 above the amorphous alloy and heating the amorphous alloy by heat conduction, the structure of the vacuum hot pressing forming device 100 can be simplified, which is conducive to the compactness of the vacuum hot pressing forming device 100. The overall dimensions of the vacuum hot pressing forming device 100 are 750 mm in length, 580 mm in width, and 825 mm in height, which greatly reduces the size of the equipment and becomes a desktop vacuum hot pressing forming device 100.

[0076] See also Figure 7 This embodiment also provides a hot pressing forming method, which is implemented by the vacuum hot pressing forming device 100, and includes the following steps:

[0077] S1: The heating structure 202 is fixedly arranged;

[0078] S2: Sliding the material-carrying structure 201 in the vertical direction and placing it below the heating structure 202 , with the amorphous alloy being located on the upper surface of the material-carrying structure 201 ;

[0079] S3: The driving structure 203 drives the material-carrying structure 201 to move toward the heating structure 202, and the material-carrying structure 201 drives the amorphous alloy to abut against and press upward the heating structure 202, so that the heat of the heating structure 202 is transferred to the amorphous alloy, and the amorphous alloy is hot-pressed under the extrusion of the material-carrying structure 201 and the heating structure 202;

[0080] S4: the driving structure 203 drives the loading structure 201 to move in a direction away from the heating structure 202, so that the amorphous alloy is separated from the heating structure 202, and the residual temperature of the heating structure 202 is prevented from affecting the amorphous alloy, thereby preventing the amorphous alloy from crystallizing.

[0081] S5: The hot pressing forming method also includes preparing a cooling structure, placing the cooling structure adjacent to the heating structure 202, and the cooling structure includes a material transfer drive 42 and a guide seat 40 with a cooling zone 402, the cooling zone 402 and the heating structure 202 are offset in a horizontal direction, the loading structure 201 is slidably arranged in the horizontal direction, and the material transfer drive 42 is used to drive the loading structure 201 to slide in the horizontal direction to the cooling zone 402.

[0082] The above are only optional embodiments of the present application and are not intended to limit the present application. For those skilled in the art, the present application may have various changes and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.

Claims

1. A vacuum hot pressing forming device for hot pressing a target object, characterized in that: The vacuum hot pressing forming device comprises: A heating structure, fixedly arranged and used for heating the target object; a loading structure, slidably disposed in a vertical direction and located below the heating structure, wherein the target object is located on the loading structure; and A driving structure connected to the loading structure; The driving structure drives the loading structure to move toward the heating structure, and the loading structure drives the target object to abut against and press upward the heating structure so that the heating structure heats the target object by heat conduction; or the driving structure drives the loading structure to move in a direction away from the heating structure so that the target object is separated from the heating structure.

2. The vacuum hot pressing forming device according to claim 1, characterized in that: The vacuum hot pressing forming device also includes a cooling structure, which includes a material transfer drive and a guide seat with a cooling zone. The cooling zone and the heating structure are staggered in a horizontal direction, the loading structure is slidably arranged in the horizontal direction, and the material transfer drive is used to drive the loading structure to slide along the horizontal direction to the cooling zone.

3. The vacuum hot pressing forming device according to claim 2, characterized in that: The guide seat is provided with a guide hole, the guide hole and the cooling zone are arranged at intervals on the same surface of the guide seat, and the driving structure is connected to the loading structure through the guide hole.

4. The vacuum hot pressing forming device according to claim 3, characterized in that: The guide seat is further provided with a positioning cavity, the guide hole is provided at one end of the cavity bottom of the positioning cavity, and the cooling zone is located at the other end of the cavity bottom of the positioning cavity.

5. The vacuum hot pressing forming device according to claim 4, characterized in that: The shapes of the cavity walls at both ends of the positioning cavity are adapted to the shape of the side surface of the loading structure.

6. The vacuum hot pressing forming device according to any one of claims 2 to 5, characterized in that: The cooling structure further includes a cooling pipe, and the cooling pipe is used to transport cooling gas to the target object located in the cooling area.

7. The vacuum hot pressing forming device according to any one of claims 3 to 5, characterized in that: The driving structure includes a lifting pressure head connected to the material loading structure and a driving assembly for driving the lifting pressure head, and the lifting pressure head is penetrated by the guide hole.

8. The vacuum hot pressing forming device according to claim 7, characterized in that: The driving assembly includes a screw connected to the lifting and lowering pressure head, a lift connected to the screw, and a driver connected to the lift.

9. The vacuum hot pressing forming device according to any one of claims 1 to 5, characterized in that: The vacuum hot pressing forming device also includes a hot pressing shell having a vacuum cavity, the heating structure and the loading structure are both located in the vacuum cavity, the hot pressing shell is provided with an avoidance hole connected to the vacuum cavity, and the output end of the driving structure is slidably and sealedly arranged in the avoidance hole and connected to the loading structure.

10. A hot pressing forming method, implemented by the vacuum hot pressing forming device according to any one of claims 1 to 9, characterized in that: The hot pressing forming method comprises the following steps: The heating structure is fixedly arranged; The material-carrying structure is slidably disposed in a vertical direction and is located below the heating structure, and the target object is located on an upper surface of the material-carrying structure; The driving structure drives the material-carrying structure to move toward the heating structure, and the material-carrying structure drives the target object to abut against and press upward the heating structure, so that the heat of the heating structure is transferred to the target object; The driving structure drives the loading structure to move in a direction away from the heating structure, so that the target object is separated from the heating structure.

Images