Thermal forming equipment and system

Abstract

The invention discloses thermal forming equipment and a thermal forming system, and is applied to the technical field of thermal forming. An upper slide block and a lower slide block; the transmission assembly is installed on the equipment frame, the transmission assembly comprises a power component, a power conversion component connected with the power component, a torque transshipment mechanism connected with the power conversion component and a feedback encoder used for obtaining the rotation angle of the torque transshipment mechanism, and the power conversion component and the torque transshipment mechanism are both in a gear shape; the torque transfer mechanism is used for driving the upper sliding block to move towards or away from the lower sliding block; the power component and the feedback encoder are both connected with the controller, and the controller is used for controlling the power component to act according to the rotation angle, obtained by the feedback encoder, of the torque transshipment mechanism. According to the thermal forming equipment, the moving position of the upper sliding block can be better fed back, the mold closing position precision between the upper mold and the lower mold is improved, and the machining precision of a workpiece is further improved.

Description

Technical Field

[0001] The present invention relates to the technical field of thermoforming, and in particular to a thermoforming device and system. Background Art

[0002] With the current strict control of energy consumption in the automotive industry and the rapid growth of new energy vehicles, the demand for automotive safety and lightweight is becoming increasingly urgent. Hot-formed steel is widely used in automotive structural parts due to its ultra-high strength and low processing difficulty. The main production process of hot-formed steel is to heat the steel plate at high temperature to make the structure of the steel plate fully austenitized, and then cool it quickly, thereby comprehensively improving the strength of the steel plate and making the yield strength of the steel reach more than 1000MPa. At the same time, the demand for hot and cold partition parts is also increasing in large quantities, especially in terms of battery protection. On the same part, it requires both high workpiece strength and guaranteed welding performance.

[0003] The stamping forming equipment in the related technology generally adopts a stamping machine structure, performs contour mold pressing on the hot-formed parts, and uses water heat transfer for quenching. This method requires a relatively large tonnage of equipment, and the corresponding energy consumption is relatively high. The manufacturing cost of the equipment is relatively large, and the floor space is also relatively large. For some special working conditions that require frequent precise positioning at different positions, this type of equipment basically cannot meet the requirements. The main transmission power adopts a hydraulic mechanism, and the use of hydraulic oil will also cause certain adverse factors to the surrounding environment; alternatively, a hot forming machine is used to achieve rapid disassembly and assembly of the upper and lower pressure plates, which is convenient for regular maintenance. However, the traditional hydraulic press model is still used, which has a large tonnage, high cost, long maintenance cost and delivery time, and high investment cost.

[0004] Therefore, how to simplify the production process of thermoforming equipment and reduce costs is a technical problem that technicians in this field currently need to solve. Summary of the invention

[0005] The purpose of the present invention is to provide a thermoforming device and system, which can effectively reduce the cycle of thermoforming processing of workpieces and improve efficiency and processing accuracy.

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

[0007] A thermoforming device, comprising:

[0008] Equipment framework;

[0009] An upper slider and a lower slider are both installed on the equipment frame, the upper slider is used to drive the upper mold to move, and the lower slider is used to support the lower mold;

[0010] A transmission assembly is installed on the equipment frame, the transmission assembly includes a power component, a power conversion component connected to the power component, a torque transfer mechanism connected to the power conversion component, and a feedback encoder for obtaining the rotation angle of the torque transfer mechanism, the power conversion component and the torque transfer mechanism are both gear-shaped; the torque transfer mechanism is used to drive the upper slider to move toward or away from the lower slider;

[0011] A controller, wherein the power component and the feedback encoder are both connected to the controller, and the controller is used to control the action of the power component according to the rotation angle of the torque transfer mechanism obtained by the feedback encoder.

[0012] On the other hand, the transmission assembly also includes a brake transmission component for transmitting the power of the power component to the power conversion component. The brake transmission component is connected between the power component and the power conversion component, and the brake transmission component is connected to the controller. The controller is also used to control the brake transmission component to stop after the upper slider moves to the target position.

[0013] On the other hand, the transmission assembly also includes a rotating connecting component, one end of the rotating connecting component is hinged to the torque transfer mechanism, and the other end is hinged to the upper slider, and the torque transfer mechanism pulls the upper slider up and down through the rotating connecting component; and the number of the power conversion component, the torque transfer mechanism and the rotating connecting component is at least two, and they are symmetrically distributed along the left and right sides of the brake transmission component, and at least one of the rotating connecting components is connected to the left and right sides of the upper slider.

[0014] On the other hand, a work surface is provided on the upper portion of the lower sliding block, and a plurality of positioning grooves for positioning the lower mold and a plurality of fixing grooves for fixing the lower mold are provided on the work surface, and the positioning grooves and the fixing grooves are arranged in an array.

[0015] On the other hand, it also includes a thermoforming mold, the thermoforming mold comprising:

[0016] The upper mold and the lower mold, a cavity for placing a workpiece therein is formed between the upper mold and the lower mold, a cavity is provided inside the upper mold and the lower mold, and a hollow portion is provided at a target position on one side of the upper mold and the lower mold close to the cavity, and the hollow portion is connected to the cavity so that the medium in the cavity can be sprayed onto the workpiece through the hollow portion;

[0017] A plurality of ejectors, wherein the ejectors are installed in the cavities of the upper mold and / or the lower mold;

[0018] A plurality of medium pipelines are arranged in the cavity, the medium pipelines are used to provide medium to the injection body, and the pressure of the medium pipelines is adjustable.

[0019] On the other hand, it also includes:

[0020] The upper mold water supply installation adapter is used to connect the external pipeline. The upper mold water supply installation adapter is installed on the equipment frame, and the upper mold is provided with a quick-release joint that is detachably connected to the upper mold water supply installation adapter, and the quick-release joint is connected to the medium pipeline.

[0021] On the other hand, it also includes:

[0022] An exhaust gas collecting component, used for collecting exhaust gas in the quenching process, wherein the exhaust gas collecting component is installed on the top of the equipment frame;

[0023] A water circulation system for collecting media and recycling them; the water circulation system includes: a circulating water collection box for storing cooling water recovered from the thermoforming mold and performing primary filtration on the cooling water; a return water component for extracting cooling water at the thermoforming mold and delivering it to the circulating water collection box, the return water component being connected to the circulating water collection box; a water storage tank component for storing the once filtered circulating water in the circulating water collection box; a water supply component for obtaining the once filtered circulating water in the circulating water collection box and delivering it to the water storage tank component, the water storage tank component being connected with a water supply channel for delivering cooling water to the thermoforming mold; a secondary filter and / or a tertiary filter installed on the water supply channel for performing secondary and / or tertiary filtration on the cooling water in the water supply channel; a high-pressure water pump installed on the water supply pipeline for adjusting the water supply pressure of the water supply channel, and the adjustable range is 0-3Mpa.

[0024] On the other hand, it also includes a guiding mechanism installed in the equipment frame, and the upper slider is slidably connected to the guiding mechanism; the lower slider is slidably installed in the equipment frame, and the lower slider can slide from the inside of the equipment frame to the outside to replace the mold.

[0025] The present invention also provides a thermoforming system, comprising any one of the thermoforming devices described above.

[0026] On the other hand, it also includes a tunnel furnace, which is provided with a workpiece placement position, a heating area, an insulation area and a grabbing area in the furnace in sequence from the loading end to the lower end; it also includes a workstation loading device and an automatic loading robot, the automatic loading robot is used to grab the workpiece in the workstation loading device and place it in the workpiece placement position; it also includes a truss manipulator and a medium supply and recovery device, the hot forming equipment is located between the truss manipulator and the medium supply and recovery device, and the truss manipulator is used to move the workpiece in the grabbing area in the furnace to the hot forming equipment.

[0027] On the other hand, the truss manipulator includes a first supporting column, a second supporting column, a transverse supporting member, a grasping mechanism and a mechanism motion assembly, the first supporting column and the second supporting column are respectively placed at the two ends of the transverse supporting member, and the grasping mechanism is suspended at the bottom of the mechanism motion assembly through a fourth axis connecting mechanism; the grasping mechanism includes a grasping frame, a grasping cylinder, a grasping transmission rod, a transmission rod fixing sleeve and a transmission lever, the grasping cylinder is installed on the grasping frame, and a cylinder protective cover is also provided on the outside of the grasping cylinder, A grabbing transmission rod is slidably connected to the transmission rod fixing sleeve, one end of the grabbing transmission rod is connected to the grabbing cylinder, and the other end is connected to the transmission lever; and a first hook is provided at the bottom of the grabbing frame, and a second hook is provided at the bottom of the transmission lever. When the workpiece moves to the grabbing area in the tunnel furnace, one end of the workpiece moves to the first hook, and the grabbing cylinder drives the grabbing transmission rod to translate to drive the transmission lever to swing, and the transmission lever drives the second hook to swing to clamp the other end of the workpiece.

[0028] On the other hand, the mechanism motion assembly includes a mechanism motion support body and a fourth-axis servo motor, a motor protective cover, a harmonic reducer, a driving component and a heat insulation plate installed on the mechanism motion support body, the motor protective cover is arranged on the fourth-axis servo motor, the harmonic reducer is connected between the fourth-axis servo motor and the driving component, the heat insulation plate is installed at one end of the driving component close to the grasping mechanism, the grasping mechanism is installed on the driving component and can follow the movement of the driving component; a cooling component is also installed on the mechanism motion support body, and the cooling component is used to introduce cold air into the mechanism motion support body to cool the fourth-axis servo motor.

[0029] The thermoforming equipment provided by the present invention includes: an equipment frame; an upper slider and a lower slider, both of which are installed on the equipment frame, the upper slider is used to drive the upper mold to move, and the lower slider is used to support the lower mold; a transmission assembly, installed on the equipment frame, the transmission assembly includes a power component, a power conversion component connected to the power component, a torque transfer mechanism connected to the power conversion component, and a feedback encoder for obtaining the rotation angle of the torque transfer mechanism, the power conversion component and the torque transfer mechanism are both gear-shaped; the torque transfer mechanism is used to drive the upper slider to move toward or away from the lower slider; a controller, the power component and the feedback encoder are both connected to the controller, and the controller is used to control the action of the power component according to the rotation angle of the torque transfer mechanism obtained by the feedback encoder. The thermoforming equipment provided by the present invention utilizes the gear transmission between the power component, the power conversion component and the torque transfer mechanism to improve the position movement accuracy of the upper slider, thereby effectively improving the mold closing position accuracy between the upper mold and the lower mold, and further improving the processing accuracy of the workpiece; further, by adding the feedback encoder, the feedback encoder is used to obtain the rotation angle of the torque transfer mechanism to feed back to the controller, so that the moving position of the block can be better fed back, further improving the mold closing position accuracy between the upper mold and the lower mold, and further improving the processing accuracy of the workpiece.

[0030] In one embodiment, it also includes a guiding mechanism installed in the equipment frame, and the upper slider is slidably connected to the guiding mechanism; the lower slider can be slidably installed in the equipment frame, and the lower slider can slide from the inside of the equipment frame to the outside to replace the mold. In the above arrangement, the guiding mechanism can be a guide rail, such as a steel guide rail. Through the arrangement of the guiding mechanism, the smoothness of the upper slider during the lifting process can be improved, thereby further improving the moving position accuracy of the upper slider, thereby improving the position accuracy of the upper mold; further, the lower slider can slide from the inside of the equipment frame to the outside, that is, the lower slider is a movable workbench, which can be moved horizontally from the equipment frame to the left and right to replace the mold, thereby increasing the convenience and timeliness of replacing the mold.

[0031] The thermoforming system provided by the present invention is provided with the above-mentioned thermoforming equipment. Since the thermoforming equipment has the above-mentioned technical effects, the thermoforming system provided with the thermoforming equipment should also have corresponding technical effects. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or related technologies, the drawings required for use in the embodiments or related technical descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0033] Figure 1 A schematic structural diagram of a specific implementation of the thermoforming equipment provided by the present invention;

[0034] Figure 2 for Figure 1 The transmission control mechanism diagram of the thermoforming equipment shown;

[0035] Figure 3 for Figure 1 The structural diagram of the water circulation system in the thermoforming equipment shown;

[0036] Figure 4 for Figure 1 A schematic diagram of the structure of a thermoforming mold in the thermoforming equipment shown;

[0037] Figure 5 for Figure 4 A schematic structural diagram of the supporting contact portion and the hollow portion in the upper mold and the lower mold;

[0038] Figure 6 for Figure 4 Cross-sectional view of the injection body and the medium pipeline;

[0039] Figure 7 for Figure 4 A schematic diagram of the structure of the upper mold and the lower mold in the thermoforming mold when the mold is closed;

[0040] Figure 8 This is one implementation method of the hot and cold partitions in the thermoforming mold provided by the present invention;

[0041] Fig. 9 Another implementation method of hot and cold partitions in the thermoforming mold provided by the present invention;

[0042] Fig.10 A schematic diagram of a process of a specific embodiment of the thermoforming system provided by the present invention;

[0043] Fig.11 A schematic structural diagram of a specific implementation of the thermoforming system provided by the present invention;

[0044] Fig.12 for Fig.10 A cross-sectional view of a truss robot in a hot forming system shown;

[0045] Fig.13 for Fig.12 The structural diagram of the grasping mechanism in the truss manipulator shown;

[0046] Fig.14 for Fig.12 The schematic diagram of the structure of the motion components of the mechanism in the truss manipulator is shown.

[0047] Reference numerals:

[0048] Thermoforming mold 1; Thermoforming equipment 2; Thermoforming system 3; Workpiece 4;

[0049] Upper mold 11; lower mold 12; hollow part 13; ejector 14; medium pipeline 15; mold upper connecting plate 16; mold lower connecting plate 17; upper connecting piece 18; lower connecting piece 19; support contact part 110;

[0050] Equipment frame 21; upper slider 22; lower slider 23; transmission assembly 24; power component 24-1; power conversion component 24-2; torque transfer mechanism 24-3; feedback encoder 24-4; brake transmission component 24-5; rotating connection component 24-6; balance cylinder 24-7; upper mold water supply installation adapter 25; upper water channel interface 26; lower water channel interface 27; exhaust gas collection component 28; water circulation system 29; circulating water collection box 29-1; return water component 29-2; water storage tank component 29-3; water supply component 29-4; secondary filter 29-5; tertiary filter 29-6; high-pressure water pump 29-7; water supply pipeline 29-8; guide mechanism 210; quenching equipment protection cover 211; mold installation position 212;

[0051] Workpiece placement position 31-1; heating zone 31-2; insulation zone 31-3; grabbing zone in the furnace 31-4; station loading equipment 32; automatic loading robot 33; truss manipulator 34; first support column 34-1; second support column 34-2; transverse support member 34-3; grabbing mechanism 34-4; grabbing frame 34-4-1; grabbing cylinder 34-4-2; grabbing transmission rod 34-4-3; transmission rod fixing sleeve 34-4-4; transmission dial Rod 34-4-5; cylinder protective cover 34-4-6; first hook 34-4-7; second hook 34-4-8; floating connector 34-4-9; mechanism motion assembly 34-5; fourth axis servo motor 34-5-1; motor protective cover 34-5-2; harmonic reducer 34-5-3; drive component 34-5-4; heat insulation board 34-5-5; cooling component 34-5-6; bearing 34-5-7; medium supply recovery device 35. DETAILED DESCRIPTION

[0052] The core of the present invention is to provide a thermoforming device and system, which can improve the mold position accuracy of the upper mold and the lower mold, thereby improving the processing accuracy of the workpiece.

[0053] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0054] Hot forming technology refers to the process of heating steel plates at high temperatures to make the steel plate's structure fully austenitized and then rapidly cooling it, thereby comprehensively improving the strength of the steel plate and making the yield strength of the steel reach more than 1000 MPa. For example, using this material on automobile body parts can reduce the weight of the car body while increasing the strength of the car body to achieve higher collision safety. Therefore, hot forming technology has been widely used in the automotive industry.

[0055] In the hot forming process of related technologies, die quenching is the key link to achieve the final performance, and the mold is the key factor to control the cooling process; the initial design of the indirect hot forming mold is to calculate the energy of the hot workpiece per unit time through the thermal conductivity parameters of the water channel and the material, and to achieve the defined strength of the workpiece by defining the cooling rate. However, die quenching has the following difficulties: First, it is difficult to accurately control the placement of the heated steel workpiece into the mold cavity, which increases the difficulty of process control; second, the shape of the heated steel workpiece is usually not flat, and if there are structures such as corners, the cooling rate will be inconsistent, which makes the internal hardness of the workpiece uneven and the strength uncontrollable; third, the water channel in the mold does not directly contact the steel workpiece, which leads to slow cooling and low cooling efficiency; fourth, the cost of hot forming molds is expensive, which is difficult for ordinary companies to afford, and it also greatly limits the promotion of indirect hot forming.

[0056] In this implementation, please refer to Figures 1 to 3 , the thermoforming equipment 2 comprises:

[0057] Equipment frame 21;

[0058] The upper slider 22 and the lower slider 23 are both installed on the equipment frame 21. The upper slider 22 is used to drive the upper mold 11 to move, and the lower slider 23 is used to support the lower mold 12.

[0059] The transmission assembly 24 is installed on the equipment frame 21. The transmission assembly 24 includes a power component 24-1, a power conversion component 24-2 connected to the power component 24-1, a torque transfer mechanism 24-3 connected to the power conversion component 24-2, and a feedback encoder 24-4 for obtaining the rotation angle of the torque transfer mechanism 24-3. The power conversion component 24-2 and the torque transfer mechanism 24-3 are both gear-shaped; the torque transfer mechanism 24-3 is used to drive the upper slider 22 to move toward or away from the lower slider 23;

[0060] The controller, the power component 24 - 1 and the feedback encoder 24 - 4 are all connected to the controller, and the controller is used to control the action of the power component 24 - 1 according to the rotation angle of the torque transfer mechanism 24 - 3 obtained by the feedback encoder 24 - 4.

[0061] Specifically, the rotation of the torque transfer mechanism 24-3 drives the upper slider 22 to move up and down, realizing the opening and closing of the mold of the entire equipment; the power component 24-1 provides power support for the downward pressing, positioning and lifting of the upper slider 22. The power component 24-1 can adjust the equipment torque according to the actual needs of the equipment, and then control the pressure of the equipment. Its tonnage can be controlled between 1-600T and can be adjusted; the power component 24-1 can cooperate with the torque transfer mechanism 24-3 and provide signal feedback to form a closed-loop control of the transmission position to achieve position accuracy control, and its repeated positioning accuracy can reach ±0.03mm; by replacing power conversion components 24-2 and torque transfer mechanisms 24-3 of different specifications, the transmission ratio between the power conversion component 24-2 and the torque transfer mechanism 24-3 can be 1 to 100 to meet different usage requirements.

[0062] The thermoforming equipment 2 utilizes the gear transmission between the power component 24-1, the power conversion component 24-2 and the torque transfer mechanism 24-3 to improve the position movement accuracy of the upper slider 22, thereby effectively improving the clamping position accuracy between the upper mold 11 and the lower mold 12, and further improving the processing accuracy of the workpiece 4; further, by adding a feedback encoder 24-4, the feedback encoder 24-4 is used to obtain the rotation angle of the torque transfer mechanism 24-3, and then feedback is provided to the controller, so that the movement position of the upper slider 22 can be better fed back, and the clamping position accuracy between the upper mold 11 and the lower mold 12 is further improved, and the processing accuracy of the workpiece 4 is further improved.

[0063] In some embodiments, the transmission assembly 24 also includes a brake transmission component 24-5, which is used to transmit the power of the power component 24-1 to the power conversion component 24-2. The brake transmission component 24-5 is connected between the power component 24-1 and the power conversion component 24-2, and the brake transmission component 24-5 is connected to the controller. The controller is also used to control the brake transmission component 24-5 to stop after the upper slider 22 moves to the target position; the brake transmission component 24-5 is also a transmission gear, and the brake transmission component 24-5 is connected to the power component 24-1 and meshes with the power conversion component 24-2 to transmit the action of the power component 24-1 to the power conversion component 24-2; the brake transmission component 24-5 can protect the power component 24-1, and can also improve the positioning accuracy of the equipment and support the positioning stability of the overall equipment.

[0064] In some embodiments, the transmission assembly 24 also includes a rotating connecting component 24-6, one end of the rotating connecting component 24-6 is hinged to the torque transfer mechanism 24-3, and the other end is hinged to the upper slider 22. The torque transfer mechanism 24-3 pulls the upper slider 22 up and down through the rotating connecting component 24-6 to ensure the smooth lifting and lowering of the upper slider 22; the transmission assembly 24 constitutes the power source of the device and the position closed-loop control mechanical part of the entire device.

[0065] In some embodiments, the number of the power conversion component 24-2, the torque transfer mechanism 24-3 and the rotating connection component 24-6 is at least two, and they are symmetrically distributed along the left and right sides of the brake transmission component 24-5, and at least one rotating connection component 24-6 is distributed and connected to the left and right sides of the upper slider 22; in this way, the two sides of the upper slider 22 move synchronously, so that its positioning accuracy is better.

[0066] In some embodiments, the transmission assembly 24 also includes a balancing cylinder 24-7, which is used to balance the physical deadweight of the upper slider 22 and the upper mold 11, reduce the torque and power of the power component 24-1, and play a role in energy saving. The maximum mold opening and closing speed of the device can be 2m / s, and the mold opening and closing speed can also be 0.1-2m / s, and the speed is adjustable; the stroke of the upper mold 11 can be 0-4m, and the mold opening distance can be adjusted to 0-3m; due to the high control accuracy of the device, the working table size of the lower module can be 3500mm*5000mm to meet the processing requirements of small tonnage and large-size workpieces 4.

[0067] In some embodiments, a work surface is provided on the upper portion of the lower slider 23, and a plurality of positioning grooves for positioning the lower mold 12 and a plurality of fixing grooves for fixing the lower mold 12 are provided on the work surface, and the positioning grooves and the fixing grooves are arranged in an array; specifically, the work surface of the lower slider 23 has a cross-shaped positioning groove, which is used for replacing the mold and positioning the mold for installation, that is, when the same model of the thermoforming mold 1 is used, a positioning block can be installed in the positioning groove, without repeated positioning, thereby improving the mold installation efficiency; the fixing groove is a T-slot, and can be connected and fixed to the lower mold 12 of the thermoforming mold 1 through the T-slot to ensure the stable position of the lower mold 12.

[0068] In some embodiments, please refer to Figures 4 to 9 , also includes a thermoforming mold 1, the thermoforming mold 1 includes: an upper mold 11 and a lower mold 12, a cavity for placing the workpiece 4 is formed between the upper mold 11 and the lower mold 12, and a cavity is provided inside the upper mold 11 and the lower mold 12, and a hollow part 13 is provided at a target position on one side of the upper mold 11 and the lower mold 12 close to the cavity, and the hollow part 13 is connected to the cavity so that the medium in the cavity can be sprayed onto the workpiece 4 through the hollow part 13; a plurality of ejectors 14, and the ejectors 14 are installed in the cavity of the upper mold 11 and / or the lower mold 12; a plurality of medium pipelines 15, which are arranged in the cavity, and the medium pipelines 15 are used to provide medium to the ejectors 14, and the pressure of the medium pipelines 15 is adjustable. Specifically, the hot forming mold 1 is suitable for most hot forming materials in the automotive industry, and the hot forming process uses hot-dip galvanizing, hot-dip zinc-nickel, hot-dip galvanized iron alloy coating, electro-galvanizing, electro-galvanizing nickel, hot-dip aluminum zinc, hot-dip aluminum silicon and other single metal coatings or composite coatings. The products produced using this mold have good mechanical properties and corrosion resistance during the application process, and are suitable for front and rear bumpers of traditional fuel vehicles and new energy vehicles, longitudinal load beams. Roof side beams, door panel reinforcement ribs, transverse support beams, floor channels, suspension brackets, A / B pillars, threshold safety structural parts, battery shells and other parts.

[0069] The thermoforming mold 1 forms a specific shape and size of the workpiece 4 through the cavity structure between the upper mold 11 and the lower mold 12; in order to meet the soft and hard zoning requirements of the workpiece 4, the present application provides cavities inside the upper mold 11 and the lower mold 12, and provides a hollow portion 13 on the side of the upper mold 11 and the lower mold 12 close to the cavity. The hollow portion 13 should be located at the target position of the upper mold 11 and the lower mold 12, and the target position is determined according to the soft and hard zoning on the workpiece 4. Specifically, the cooling rate corresponding to the hard zone of the workpiece 4 is relatively large, and the hollow portion 13 can be set at the corresponding position; by arranging a medium pipeline 15 in the cavity, a plurality of ejectors 14, i.e., nozzles, are distributed on the medium pipeline 15. Through the setting of the ejector 14, the medium in the medium pipeline 15 is sprayed onto the workpiece 4 to ensure that the cooling rate of the hard zone in the workpiece 4 is increased, and In the soft zone on the workpiece 4, there is no need to set the hollow part 13, which reduces the cooling rate of the workpiece 4; more specifically, the number and size of the hollow part 13 at the position corresponding to the hard zone of the workpiece 4 can be appropriately increased to increase the contact area between the medium and the workpiece 4, thereby increasing the cooling rate of the workpiece 4 at this position; further, the arrangement direction of the medium pipeline 15 is adapted to the shape of the workpiece 4, and the medium pressure in the same medium pipeline 15 is the same. For example, the pressure in the medium pipeline 15 corresponding to the hard zone of the workpiece 4 can be greater than the pressure in the medium pipeline 15 corresponding to the soft zone of the workpiece 4, or, different medium types or different medium temperatures can be set in different medium pipelines 15 to achieve different temperature control of the soft zone and the hard zone, improve the forming accuracy and efficiency of the workpiece 4, effectively eliminate the quenching deformation phenomenon of the workpiece 4, have good weldability, and the surface of the workpiece 4 is not easy to oxidize. The hot forming die can meet the hot forming processing requirements of the soft and hard zones or the full hard zone, and also has the characteristics of accurate forming, good weldability, effective elimination of quenching deformation, and the surface of the workpiece 4 after quenching is not easy to oxidize.

[0070] In some embodiments, the pressures in at least two medium pipelines 15 are different. The greater the pressure, the faster the workpiece 4 cools. Different pressure settings can be made for the soft zone and the hard zone to meet different requirements. In some embodiments, the temperatures of the media in at least two medium pipelines 15 are different. The lower the temperature, the faster the workpiece 4 cools. Different temperatures can be made for the soft zone and the hard zone to meet different requirements. In some embodiments, the types of media in at least two medium pipelines 15 are different. For example, liquid water, compressed air, or a gas-liquid mixture can be selected. Different cooling requirements can be met by introducing different types of media into the medium pipelines 15.

[0071] In some embodiments, it also includes an upper mold connecting plate 16 and a lower mold connecting plate 17. The upper mold 11 is installed on the upper mold connecting plate 16 and moves according to the upper mold connecting plate 16. The lower mold 12 is installed on the lower mold connecting plate 17 and moves with the lower mold connecting plate 17. Further, the upper mold connecting plate 16 and the lower mold connecting plate 17 are respectively installed on the upper slider 22 and the lower slider 23 of the thermoforming equipment 2. The upper mold connecting plate 16 and the lower mold connecting plate 17 are moved closer or farther away from each other by the upper slider 22 and the lower slider 23, thereby completing the closing and opening of the upper mold 11 and the lower mold 12.

[0072] In some embodiments, the location of the hollow portion 13 corresponds to the location of the hard area of ​​the workpiece 4. Since the medium of the hollow portion 13 is in direct contact with the workpiece 4, the medium can cool the workpiece 4 more quickly through the hollow portion 13, making the hardness of the workpiece 4 higher at this location; further, in order to improve the effect of the ejector 14 on the workpiece 4, the installation location of the ejector 14 corresponds to the location of the hollow portion 13. Of course, the location of the ejector 14 can also be adjusted according to needs or according to the size and shape of the cavity. The cooling speed of the workpiece 4 is mainly adjusted by the location and size of the hollow portion 13, as well as the pressure, temperature and type of the medium.

[0073] In some embodiments, the hollow portion 13 is located between adjacent support contact portions 110, and the support contact portions 110 and the hollow portions 13 are arranged alternately. By arranging the support contact portions 110 and the hollow portions 13 alternately, processing can be facilitated and the position constraint of the workpiece 4 can be improved; and the setting density of the hollow portions 13 can be appropriately increased at the position corresponding to the hard area of ​​the workpiece 4. The support contact portion 110 is in the shape of an elastic lath. Specifically, the support contact portion 110 adopts a lath-shaped structure. By leaving a certain elastic margin in the support contact portion 110, the entire quenching process of cooling the workpiece 4 heated to a temperature above Ac3 to a temperature below a preset temperature can be compatible, and the transformation from austenite to martensite can be performed; the preset temperature can be 0-400°C; since the deformation of the workpiece 4 during the entire quenching process is large, the lath-shaped structure plays a certain role in constraining the shape change of the workpiece 4, which is conducive to the hot forming of the workpiece 4 and improves the forming accuracy of the workpiece 4.

[0074] In some embodiments, the width of the support contact portion 110 is 3-50 mm, and the width of the support contact portion 110 should not be too small, as it should have a good supporting effect on the workpiece 4, nor should it be too large, as it will have a poor cooling effect. The width of the hollow portion 13 is 3-90 mm, and the width of the hollow portion 13 should not be too small, as it will have a poor cooling effect, nor should it be too large, as it will affect the width of the support contact portion 110, thereby failing to provide good support for the workpiece 4; and / or, the distance between the ejector 14 and the workpiece 4 is 120-600 mm, and the distance between the ejector 14 and the workpiece 4 refers to the distance between the ejector 14 and the workpiece 4 after the upper mold 11 and the lower mold 12 are closed. The size of the distance between the ejector 14 and the workpiece 4 will be affected by the injection rate and flow rate of the medium, and can be adjusted as needed; the injection shape of the ejector 14 is conical, and the central angle of the cone is less than or equal to 125°. This arrangement allows the medium to be better sprayed on the workpiece 4, thereby increasing the cooling rate of the workpiece 4. Furthermore, the transition zone between the soft and hard partitions is 3 mm to 60 mm, which has a wide range of applications. The support contact portion 110 is made of stainless steel, and / or the surface of the support contact portion 110 has a wear-resistant coating to increase the service life.

[0075] In some embodiments, a connector for installing the medium pipeline 15 in the cavity is also included, and the position of the connector is adjustable to change the position and angle of the medium pipeline 15 in the cavity. Specifically, the connector includes an upper connector 18 and a lower connector 19, and the number of the upper connector 18 and the number of the lower connector 19 are both two. The medium pipeline 15 in the upper mold 11 is installed between the two upper connectors 18, and the medium pipeline 15 in the lower mold 12 is installed between the two lower connectors 19. The installation height of the medium pipeline 15 in the upper mold 11 can be adjusted through the upper connector 18, and the installation height of the medium pipeline 15 in the lower mold 12 can be adjusted through the lower connector 19, thereby changing the distance between the ejector 14 and the workpiece 4.

[0076] In some embodiments, it also includes: a plurality of boosting devices, the number of the medium pipelines 15 and the boosting devices is the same and corresponds one to one; a controller connected to the boosting device, the controller is used to obtain the position of the soft zone and the hard zone of the workpiece 4, and determine the target pressure required for each medium pipeline 15 according to the position of the soft zone and the hard zone of the workpiece 4; and is also used to control the operation of the boosting device according to the target pressure. The above setting controls the boosting device through the controller to adjust the pressure in the medium pipeline 15, so as to meet the injection pressure of the injection body 14 on each medium pipeline 15. Since the medium pipeline 15 corresponds one to one with the boosting device, it is only necessary to obtain the distribution position of the soft zone and the hard zone in the workpiece 4 to adjust the size of the pressure applied by the boosting device accordingly, and can realize automatic control, which is conducive to improving the degree of automation, reducing the interference of human factors, and maximizing the precision and efficiency of the hot forming of the workpiece 4, thereby improving product quality.

[0077] In some embodiments, it further comprises:

[0078] The upper mold water supply installation adapter 25 is used to connect the external pipeline. The upper mold water supply installation adapter 25 is installed on the equipment frame 21, and the upper mold 11 is provided with a quick-release joint that is detachably connected to the upper mold water supply installation adapter 25, and the quick-release joint is connected to the medium pipeline 15. Specifically, the upper mold water supply installation adapter 25 can be directly integrated into the equipment frame 21, or connected to the equipment frame 21 by bolts. The external pipeline transfers the medium to be cooled to the upper mold water supply installation adapter 25 through a soft connection or a hard connection. The upper mold 11 of the thermoforming mold 1 has a quick-change joint, and a hose or a hard pipe can be connected in the middle to supply the cooling medium. Of course, it can also include a lower mold water supply installation adapter for connecting the external pipeline. The lower mold water supply installation adapter is installed on the equipment frame 21, and the lower mold 12 is provided with a quick-release joint that is detachably connected to the lower mold water supply installation adapter, and the quick-release joint is connected to the medium pipeline 15. Specifically, the lower mold water supply installation adapter can be directly integrated into the equipment frame 21, or connected to the equipment frame 21 by bolts. The external pipeline transfers the medium to be cooled to the lower mold water supply installation adapter through a soft connection or a hard connection. The lower mold 12 of the thermoforming mold 1 has a quick-change connector, and a hose or a hard pipe can be connected in the middle to supply the cooling medium. Furthermore, the upper mold water supply installation adapter 25 and the lower mold water supply installation adapter are compatible with high and low pressures, and can be compatible with different pressures from 0.1Mpa to 30Mpa to meet the needs of different working conditions.

[0079] In some embodiments, an upper water channel interface 26 and a lower water channel interface 27 are also included. The upper water channel interface 26 is installed on the upper slider 22, and the lower water channel interface 27 is installed on the lower slider 23. The upper water channel interface 26 is connected to the quick-release connector, and the upper water channel interface 26 is connected to the upper mold water supply installation adapter 25 through a hose or a hard pipe, so that the medium is transported to the upper mold 11 to facilitate the quenching process.

[0080] In some embodiments, it further comprises:

[0081] An exhaust gas collecting component 28 is used to collect exhaust gas during the quenching process. The exhaust gas collecting component 28 is installed on the top of the equipment frame 21;

[0082] The water circulation system 29 is used to collect the medium and recycle it; the water circulation system 29 includes: a circulating water collection tank 29-1, which is used to store the cooling water recovered from the self-heating forming mold 1 and perform primary filtration on the cooling water; a return water component 29-2, which is used to extract the cooling water at the heat forming mold 1 and transport it to the circulating water collection tank 29-1, and the return water component 29-2 is connected to the circulating water collection tank 29-1; a water storage tank component 29-3, which is used to store the primary filtered circulating water in the circulating water collection tank 29-1, and the water storage tank component 29-3 can stabilize the water pressure and water volume, so that the water supply process of the quenching equipment is smoother; a water supply component 29-4, which is used to obtain the circulating water collection tank 29-1. The once filtered circulating water in the collecting box 29-1 is delivered to the water storage tank component 29-3, and the water storage tank component 29-3 is connected to a water supply channel for delivering cooling water to the thermoforming mold 1; the secondary filter 29-5 and / or the tertiary filter 29-6 are installed on the water supply channel to perform secondary and / or tertiary filtration on the cooling water in the water supply channel, the secondary filter 29-5 is used to filter the water in the water supply channel, and the tertiary filter 29-6 filters the water in the water supply channel again to ensure the cleanliness of the water used by the equipment; the high-pressure water pump 29-7 is installed on the water supply pipe 29-8 to adjust the water supply pressure of the water supply channel, and its adjustable range is 0-3Mpa.

[0083] In some embodiments, it also includes a guide mechanism 210, which is installed in the equipment frame 21, and the upper slider 22 is slidably connected to the guide mechanism 210; the lower slider 23 is slidably installed in the equipment frame 21, and the lower slider 23 can slide from the inside of the equipment frame 21 to the outside to replace the mold. In the above arrangement, the guide mechanism 210 can be a guide rail, such as a steel guide rail. Through the arrangement of the guide mechanism 210, the smoothness of the upper slider 22 during the lifting process can be improved, thereby further improving the moving position accuracy of the upper slider 22, thereby improving the position accuracy of the upper mold 11; further, the lower slider 23 can slide from the inside of the equipment frame 21 to the outside, that is, the lower slider 23 is a movable workbench, which can be moved horizontally out of the equipment frame 21 to the left and right to replace the mold, thereby increasing the convenience and timeliness of replacing the mold.

[0084] In some embodiments, a device base is also provided at the bottom of the device frame 21, and the device frame 21 is installed on the device base, which can better support the device frame 21 and ensure the stability of the device frame 21, thereby ensuring the smooth movement of the upper mold 11 and the lower mold 12.

[0085] In some embodiments, a quenching equipment protective cover 211 is also installed on the equipment frame 21 to protect the splash of the medium during the quenching process. A mold mounting position 212 is also installed on the equipment frame 21, and the thermoforming mold 1 is installed and replaced through the mold mounting position 212.

[0086] In a specific embodiment, the thermoforming equipment 2 includes an equipment frame 21 and an equipment base. The equipment frame 21 includes two parts, one part is installed on the equipment base, and the other part carries the transmission component 24. These three parts are the main frame part of the equipment, which carries all the mechanism installation and mechanism support, as well as the installation position of standard parts; the power component 24-1 provides power system support for the up and down movement and positioning of the equipment, and the brake transmission component 24-5 is used to transmit the power of the power component 24-1, and use the brake transmission component 24-5 for braking when positioning is required; the power conversion component 24-2 is used to lengthen the space of the transfer power system so that its entire work surface can be evenly stressed; the torque transfer mechanism 24-3 is used to expand the force space of the equipment and increase the downward tonnage of the equipment. The guide mechanism 210 is used to balance the smoothness of the up and down movement of the entire upper slider 22. The upper slider 22 is provided with a mounting groove and a mounting plate for installing the upper Mold 11; the hot forming mold 1 is a hot and cold partitioned hot forming mold 1, which is used for quenching operations of the entire process of hot forming parts; the lower slider 23 is provided with a mounting groove and a mounting plate, which is the mounting part of the lower mold 12 and is used to fix the lower mold part of the hot forming mold 1; the balancing cylinder 24-7 is used to balance the mounting groove and mounting plate of the upper slider 22, as well as the physical dead weight of the upper mold 11, reduce the torque and power of the power system, and play a role in energy saving; the exhaust gas collection device is used to collect the exhaust gas in the hot forming quenching process for centralized recycling and treatment, and its flow rate can replace the air in the equipment once every 10 seconds; the upper water channel interface 26 is used to connect the upper mold 11 of the soft and hard partitioned hot forming mold 1, and the upper water channel interface 26 provides the upper hot forming mold 1 with a medium for quenching operations; the lower water channel interface 27 is used to connect the lower mold 12 of the soft and hard partitioned hot forming mold 1, and the lower water channel interface 27 provides the lower mold 12 with a medium for quenching operations. Through the above settings, the power consumption of the device is reduced, the efficiency of the device is improved, and the floor space of the device is reduced.

[0087] The hot stamping process using the hot forming equipment 2 includes:

[0088] Step S1: Cutting galvanized steel sheets: processing the steel into coils or sheets and cutting them according to the required size; or Al-Si steel sheet cutting can also be applied;

[0089] Step S2: cold stamping: using a mold to cold stamp to form a steel workpiece 4;

[0090] Step S3: Heating: The steel workpiece 4 is heated to above Ac3; when there is no coating on the steel surface in step S1, in step S3, the steel workpiece 4 is first heated to above 700°C at 12-28°C / s, and then heated to above Ac3 at 1-5°C / s, and kept at this temperature for 28-55s; when the steel is surface treated by any of Zn plating, Al plating, Al-Si plating and high-temperature oxidant coating in step S1, in step S3, when the temperature is below 500°C, the heating rate of the steel workpiece 4 is 8-15°C / s, and then heated to between 560°C and 980°C at 15-30°C / s, and then heated to above Ac3 at 1-5°C / s, and kept at this temperature for 28-55s;

[0091] Step S4: transferring the workpiece 4 to the hot forming equipment 2 of the soft and hard partitions and the full hard zone;

[0092] Step S5: The upper slider 22 is used to close the mold so that the upper and lower molds of the thermoforming mold 1 are fitted together;

[0093] Step S6: The high-pressure water pump 29-7 activates the booster device to supply water to the medium pipeline 15. Under the action of the pressure, the multiple ejectors 14 begin to eject the medium to perform hot forming quenching on the workpiece 4. The exhaust gas collection device on the upper part of the patented device is also started at the same time to collect the exhaust gas.

[0094] Step S7: After quenching is completed, the supercharging device stops, and the exhaust gas collecting device also stops synchronously;

[0095] Step S8: the upper slider 22 performs a mold opening action until the mold opening is completed;

[0096] In the above process, the upper and lower pressing and releasing of the equipment and the clamping of the formed workpiece 4 are completed through the opening and closing action of the upper slider 22, wherein the opening of the booster device causes multiple ejectors 14 to undergo quenching spraying, the opening of the booster device is after the clamping action, and the mold opening action is performed before the closing of the booster device, the opening of the exhaust gas collection device is after the mold closing action is completed, and the work is stopped after the mold opening action is completed; the water circulation system 29 starts synchronously with the start of the mold closing of the patented equipment and stops synchronously after the quenching is completed.

[0097] In addition to the above-mentioned thermoforming device 2 , the present invention further provides a thermoforming system 3 including the above-mentioned thermoforming device 2 .

[0098] In some embodiments, please refer to Figures 10 to 14, and also includes a tunnel furnace, which is provided with a workpiece placement position 31-1, a heating zone 31-2, a heat preservation zone 31-3 and a grabbing zone 31-4 in the furnace in sequence from the loading end to the lower end; it also includes a workstation loading device 32 and an automatic loading robot 33, the automatic loading robot 33 is used to grab the workpiece 4 in the workstation loading device 32 and place it in the workpiece placement position 31-1; it also includes a truss manipulator 34 and a medium supply and recovery device 35, the hot forming equipment 2 is located between the truss manipulator 34 and the medium supply and recovery device 35, and the truss manipulator 34 is used to move the workpiece 4 in the grabbing zone 31-4 in the furnace to the hot forming equipment 2. Specifically, the workstation loading device 32 can be a six-workstation loading device 32: used for manual loading, one workstation for loading, and five workstations for standby. Each workstation can make 1 to 4 workpieces 4, which are loaded by an automatic loading robot 33. The automatic loading robot 33 is responsible for the automatic loading and grabbing of the six-workstation loading device 32. The automatic loading robot 33 cooperates with the truss manipulator 34 to perform end-to-end grabbing and pick-up and placement of the workpiece 4; the workpiece placement position 31-1 is the outside placement area after the automatic loading robot 33 grabs the workpiece 4; in the heating zone 31-2, the tunnel furnace can perform the same top and bottom loading of the workpiece 4 The workpiece 4 is heated at the same time; the insulation zone 31-3 can be used to insulate and transport the heated workpiece 4; the grabbing zone 31-4 in the furnace can position and grab the heated workpiece 4 at this station; the truss manipulator 34 is used to position and grab the workpiece 4 that has been heated and insulated, and place it in the hot forming mold 1; the hot forming equipment 2 quenches and forms the heated workpiece 4 to meet the preset mechanical performance requirements; the medium supply and recovery device 35 is used to filter, pressurize and transport the cooling medium, and recycle it for secondary use; the hot forming mold 1 is used to quench the workpiece 4 placed in the hot forming equipment 2.

[0099] Of course, the tunnel furnace can also be replaced by a box furnace, the hot forming mold 1 is located in the box furnace, the workpiece 4 is placed in the box furnace for the entire process, and the position of the workpiece 4 in the box furnace remains unchanged.

[0100] In some embodiments, the truss manipulator 34 includes a first supporting column 34-1, a second supporting column 34-2, a transverse support member 34-3, a gripping mechanism 34-4 and a mechanism motion assembly 34-5, the first supporting column 34-1 and the second supporting column 34-2 are respectively disposed at both ends of the transverse support member 34-3, and the gripping mechanism 34-4 is suspended at the bottom of the mechanism motion assembly 34-5 through a fourth axis connection mechanism; further, a floating connection 34-4-9 is provided at the end of the gripping cylinder 34-4-2, and the floating connection 34-4-9 is hinged to the end of the gripping transmission rod 34-4-3, and the accompanying drawing shows the structure when the floating connection 34-4-9 is not connected to the gripping transmission rod 34-4-3. Specifically, the first support column 34-1 and the second support column 34-2 are used to support the grasping mechanism 34-4, the first hook 34-4-7 and the second hook 34-4-8 are located at the grasping end of the grasping mechanism 34-4, and the grasping cylinder 34-4-2 can realize the left and right movement of the grasping end; the transverse support member 34-3 is used to carry the transverse movement of the truss manipulator 34; the grasping mechanism 34-4 can also move forward and backward, that is, the grasping mechanism 34-4 can move in three directions: up and down, left and right, and front and back; A supporting column 34-1 and a second supporting column 34-2 together constitute the cantilever structure of the truss manipulator 34, which increases the flexibility and space for equipment installation; the mounting base plate of the truss manipulator 34 is used to fix the truss manipulator 34 to ensure the operating stability of the equipment; the grasping mechanism 34-4 is used to continuously grasp the workpiece 4 in the furnace in a high-temperature environment; the grasping frame 34-4-1 serves as the fourth axis mechanism of the truss manipulator 34, and is used to bear the gravity and overturning force of the hook at the picking end of the grasping mechanism 34-4.

[0101] In some embodiments, the grabbing mechanism 34-4 includes a grabbing frame 34-4-1, a grabbing cylinder 34-4-2, a grabbing transmission rod 34-4-3, a transmission rod fixing sleeve 34-4-4 and a transmission lever 34-4-5. The grabbing cylinder 34-4-2 is installed on the grabbing frame 34-4-1. A cylinder protective cover 34-4-6 is also provided on the outside of the grabbing cylinder 34-4-2. The grabbing transmission rod 34-4-3 is slidably connected to the transmission rod fixing sleeve 34-4-4. One end of the grabbing transmission rod 34-4-3 is connected to the grabbing cylinder 34-4-2, and the other end is connected to the grabbing cylinder 34-4-2. The end is connected with the transmission lever 34-4-5; and, a first hook 34-4-7 is provided at the bottom of the grabbing frame 34-4-1, and a second hook 34-4-8 is provided at the bottom of the transmission lever 34-4-5. When the workpiece 4 moves to the grabbing area 31-4 in the tunnel furnace, one end of the workpiece 4 moves to the first hook 34-4-7, and the grabbing cylinder 34-4-2 drives the grabbing transmission rod 34-4-3 to translate, so as to drive the transmission lever 34-4-5 to swing, and the transmission lever 34-4-5 drives the second hook 34-4-8 to swing, so as to clamp the other end of the workpiece 4. Specifically, the grabbing frame 34-4-1 is used to support the overall mechanical structure installation of the grabbing mechanism 34-4, and the high-temperature resistant material is used to continuously work in a high-temperature environment; the cylinder protective cover 34-4-6 is used to isolate heat radiation and protect the transmission mechanism, that is, the durability of the grabbing cylinder 34-4-2; the floating connector 34-4-9 is used to connect the grabbing cylinder 34-4-2 and the grabbing transmission rod 34-4-3; the grabbing transmission rod 34-4-3 is used to transmit the movement of the entire mechanical mechanism, including supporting, moving and other actions, and the transmission rod fixing sleeve 34-4-4 is used to fix the forward and backward movement stability of the grabbing transmission rod 34-4-3 during the transmission process; the transmission lever 34-4-5 is clamped or rotated under the action of the grabbing transmission rod 34-4-3 to complete the clamping of the workpiece 4.

[0102] In some embodiments, the mechanism motion assembly 34-5 includes a mechanism motion support body and a fourth-axis servo motor 34-5-1, a motor protection cover 34-5-2, a harmonic reducer 34-5-3, a driving component 34-5-4 and a heat shield 34-5-5 installed on the mechanism motion support body. The motor protection cover 34-5-2 is provided on the fourth-axis servo motor 34-5-1, the harmonic reducer 34-5-3 is connected between the fourth-axis servo motor 34-5-1 and the driving component 34-5-4, the heat shield 34-5-5 is installed at one end of the driving component 34-5-4 close to the grasping mechanism 34-4, the grasping mechanism 34-4 is installed on the driving component 34-5-4, and can follow the movement of the driving component 34-5-4; a cooling component 34-5 is also installed on the mechanism motion support body. -6, the cooling component 34-5-6 is used to introduce cold air into the mechanism motion support body to cool the fourth axis servo motor 34-5-1; the fourth axis of the truss manipulator 34 adopts a servo motor plus a harmonic reducer 34-5-3, and a bearing 34-5-7 is also provided between the driving component 34-5-4 and the mechanism motion support body. The bearing 34-5-7 can be a double angular contact bearing 34-5-7 or a cross roller bearing 34-5-7 structure. In order to offset the lateral force of the grasping mechanism 34-4, its axial load is designed to withstand 500KG. In order to ensure the working life of the bearing 34-5-7 in a heat radiation environment, a double insurance of heat insulation material and heat insulation coating is adopted, so that it can continuously work in a high temperature heat radiation environment; the heat insulation board 34-5-5 is used to block heat conduction and radiation heat components.

[0103] The hot forming system 3 adopts the scheme of grabbing in the furnace, which reduces the air cooling time of the hot forming parts. The cycle time of the workpiece 4 from grabbing to placing it in the hot forming mold 1 can be achieved within 11 seconds, which better guarantees the organizational structure change of the parts; and the quenching equipment, the hot forming mold 1 and the water cooling system operate according to the automatic logic. In the first stage, the fluid water blowing method is adopted to make the fluid cooling medium directly contact the surface of the steel workpiece 4 heated to above Ac3, so that it is reduced to 250-450℃ within a control time of 3 seconds to 15 seconds; in the second stage The first stage uses a fluid water spraying method to make the fluid cooling medium directly contact the surface of the steel workpiece 4, so that the temperature of the surface of the steel workpiece 4 can be reduced to below 180°C within a control time of 3 seconds to 10 seconds; of course, the temperature of the surface of the steel workpiece 4 can also be continuously cooled without two stages, for example, it can be reduced to below 100°C within a control time of 2 seconds to 30 seconds; this process uses heat exchange to achieve the purpose of quenching the workpiece 4; the pressure and positioning dual-mode control type of the quenching equipment is used to maintain the overall fit of the upper and lower molds, and the pressure requirement is not large, and the overall tonnage is controlled at 2 -300 tons; the gripping mechanism 34-4 of the truss manipulator 34 is made of high temperature resistant materials and can work continuously at a temperature of 1000 degrees Celsius; the gripping frame 34-4-1 of the truss manipulator 34 is treated with a high temperature resistant coating and has circulating cold air inside, so that it can continuously maintain its mechanical and mechanical properties around the 1100°C heat radiation environment, so that it can continuously operate in this environment; the fourth axis of the truss manipulator 34 adopts a servo motor plus a harmonic reducer 34-5-3, in order to offset the gripping mechanism In order to reduce the lateral force of structure 34-4, a double angular contact bearing 34-5-7 or a cross roller bearing 34-5-7 is designed, and its axial load can withstand 500KG. In order to ensure the working life of bearing 34-5-7 in a heat radiation environment, a double insurance of heat insulation material and heat insulation coating is adopted, so that it can work continuously in a high-temperature heat radiation environment; the hot forming system 3 has manual loading only in the first station 6 station turntable loading area, and all other operations are fully automatic, with complete automatic program control to ensure the fully automatic production of the production line.

[0104] Specifically, the hot stamping process using the hot forming system 3 includes:

[0105] Step S1: Cutting galvanized steel sheets: processing the steel into coils or sheets and cutting them according to the required size; or Al-Si steel sheet cutting can also be applied;

[0106] Step S2: cold stamping: using a mold to cold stamp to form a steel workpiece 4;

[0107] Step S3: Heating: heating the steel workpiece 4 to above Ac3; when there is no coating on the steel surface in step S1, in step S3, the steel workpiece 4 is first heated to above 700°C at 12-28°C / s, and then heated to above Ac3 at 1-5°C / s, and kept at this temperature for 28-55s; when the steel is surface treated by any of Zn plating, Al plating, Al-Si plating and high-temperature oxidant coating in step S1, in step S3, when the temperature is below 500°C, the heating rate of the steel workpiece 4 is 8-15°C / s, and then heated to between 560°C and 980°C at 15-30°C / s, and then heated to above Ac3 at 1-5°C / s, and kept at this temperature for 28-55s;

[0108] Step S4: transferring the workpiece 4 to the hot forming equipment 2 through the truss machine manipulator;

[0109] Step S5: The upper mold 11 assembly is clamped along the X direction so that it gradually fits with the workpiece 4 and is pressed with the lower mold 12 assembly;

[0110] Step S6: activating the quenching equipment in the hot forming equipment 2 to perform quenching, and under the action of pressure, the multiple ejectors 14 begin to eject the medium to perform hot forming quenching on the workpiece 4;

[0111] Step S7: After quenching is completed, the booster device stops;

[0112] Step S8: the upper mold 11 assembly parts move in the opposite direction until the mold opening is completed;

[0113] Step S9: The robot grabs the quenched product and places it in the shot peening and oiling equipment to proceed to the next process.

[0114] The hot forming system 3 can enhance the controllability of steel quenching, simplify the production process of the hot forming process, reduce the power consumption of the hot forming equipment 2, improve the efficiency of the equipment, and reduce the footprint of the equipment.

[0115] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0116] The thermoforming equipment provided by the present invention is introduced in detail above. The principle and implementation mode of the present invention are described in detail using specific examples herein. The description of the above embodiments is only used to help understand the method and core idea of ​​the present invention. It should be pointed out that for ordinary technicians in this technical field, the present invention can also be improved and modified without departing from the principle of the present invention, and these improvements and modifications also fall within the scope of protection of the present invention.

Claims

1. A thermoforming device, characterized in that: include: DeviceFrame(21); An upper slider (22) and a lower slider (23) are both mounted on the equipment frame (21); the upper slider (22) is used to drive the upper mold (11) to move, and the lower slider (23) is used to support the lower mold (12); A transmission assembly (24) is mounted on the device frame (21), the transmission assembly (24) comprising a power component (24-1), a power conversion component (24-2) connected to the power component (24-1), a torque transfer mechanism (24-3) connected to the power conversion component (24-2), and a feedback encoder (24-4) for obtaining the rotation angle of the torque transfer mechanism (24-3), the power conversion component (24-2) and the torque transfer mechanism (24-3) are both gear-shaped; the torque transfer mechanism (24-3) is used to drive the upper slider (22) to move in a direction close to or away from the lower slider (23); A controller, wherein the power component (24-1) and the feedback encoder (24-4) are both connected to the controller, and the controller is used to control the action of the power component (24-1) according to the rotation angle of the torque transfer mechanism (24-3) obtained by the feedback encoder (24-4).

2. The thermoforming equipment according to claim 1, characterized in that: The transmission assembly (24) further includes a brake transmission component (24-5) for transmitting the power of the power component (24-1) to the power conversion component (24-2); the brake transmission component (24-5) is connected between the power component (24-1) and the power conversion component (24-2), and the brake transmission component (24-5) is connected to the controller; the controller is also used to control the brake transmission component (24-5) to stop after the upper slider (22) moves to the target position.

3. The thermoforming equipment according to claim 2, characterized in that: The transmission assembly (24) also includes a rotating connection component (24-6), one end of the rotating connection component (24-6) is hinged to the torque transfer mechanism (24-3), and the other end is hinged to the upper slider (22), and the torque transfer mechanism (24-3) pulls the upper slider (22) up and down through the rotating connection component (24-6); and the number of the power conversion component (24-2), the torque transfer mechanism (24-3) and the rotating connection component (24-6) is at least two, and they are symmetrically distributed along the left and right sides of the brake transmission component (24-5), and at least one of the rotating connection components (24-6) is distributed and connected to the left and right sides of the upper slider (22).

4. The thermoforming equipment according to claim 1, characterized in that: A work surface is provided on the upper portion of the lower sliding block (23), and a plurality of positioning grooves for positioning the lower mold (12) and a plurality of fixing grooves for fixing the lower mold (12) are provided on the work surface, wherein the positioning grooves and the fixing grooves are arranged in an array.

5. The thermoforming equipment according to claim 1, characterized in that: It also includes a thermoforming mold (1), wherein the thermoforming mold (1) includes: The upper mold (11) and the lower mold (12), a cavity for placing a workpiece (4) therein is formed between the upper mold (11) and the lower mold (12), a cavity is provided inside the upper mold (11) and the lower mold (12), and a hollow portion (13) is provided at a target position on one side of the upper mold (11) and the lower mold (12) close to the cavity, the hollow portion (13) being connected to the cavity so that a medium in the cavity can be sprayed onto the workpiece (4) through the hollow portion (13); A plurality of ejection bodies (14), wherein the ejection bodies (14) are installed in the cavities of the upper mold (11) and / or the lower mold (12); A plurality of medium pipelines (15) are arranged in the cavity, the medium pipelines (15) are used to provide medium to the injection body (14), and the pressure of the medium pipelines (15) is adjustable.

6. The thermoforming device according to claim 5, characterized in that: Also includes: The upper mold water supply installation adapter (25) is used to connect an external pipeline. The upper mold water supply installation adapter (25) is installed on the equipment frame (21), and the upper mold (11) is provided with a quick-release joint that is detachably connected to the upper mold water supply installation adapter (25), and the quick-release joint is connected to the medium pipeline (15).

7. The thermoforming equipment according to claim 1, characterized in that Also includes: An exhaust gas collecting component (28) for collecting exhaust gas during the quenching process, wherein the exhaust gas collecting component (28) is installed on the top of the equipment frame (21); A water circulation system (29) for collecting media and recycling them; the water circulation system (29) comprises: a circulating water collection box (29-1) for storing cooling water recovered from the thermoforming mold (1) and performing primary filtration on the cooling water; a return water component (29-2) for extracting cooling water from the thermoforming mold (1) and delivering it to the circulating water collection box (29-1); the return water component (29-2) is connected to the circulating water collection box (29-1); a water storage tank component (29-3) for storing the primary filtered circulating water in the circulating water collection box (29-1); a water supply component (29 -4), used to obtain the primary filtered circulating water in the circulating water collection box (29-1) and deliver it to the water storage tank component (29-3), the water storage tank component (29-3) being connected to a water supply channel for delivering cooling water to the thermoforming mold (1); a secondary filter (29-5) and / or a tertiary filter (29-6), installed on the water supply channel, used to perform secondary and / or tertiary filtration on the cooling water in the water supply channel; a high-pressure water pump (29-7), installed on the water supply pipe (29-8), used to adjust the water supply pressure of the water supply channel, and the adjustable range is 0-3Mpa.

8. The thermoforming device according to any one of claims 1 to 7, characterized in that: It also includes a guide mechanism (210) installed in the equipment frame (21), and the upper slider (22) is slidably connected to the guide mechanism (210); the lower slider (23) is slidably installed in the equipment frame (21), and the lower slider (23) can slide from the inside of the equipment frame (21) to the outside to replace the mold.

9. A thermoforming system, characterized in that: Comprising a thermoforming device (2) as claimed in any one of claims 1 to 8.

10. The thermoforming system according to claim 9, characterized in that The invention also includes a tunnel furnace, wherein the tunnel furnace is provided with a workpiece placement position (31-1), a heating zone (31-2), a heat preservation zone (31-3) and a furnace grabbing zone (31-4) in sequence from the loading end to the lower loading end; the invention also includes a station loading device (32) and an automatic loading robot (33), wherein the automatic loading robot (33) is used to grab the workpiece (4) in the station loading device (32) and place it in the workpiece placement position (31-1); the invention also includes a truss manipulator (34) and a medium supply and recovery device (35), wherein the hot forming device (2) is located between the truss manipulator (34) and the medium supply and recovery device (35), and the truss manipulator (34) is used to move the workpiece (4) in the furnace grabbing zone (31-4) to the hot forming device (2).

11. The thermoforming system according to claim 10, characterized in that The truss manipulator (34) comprises a first supporting column (34-1), a second supporting column (34-2), a transverse supporting member (34-3), a grasping mechanism (34-4) and a mechanism motion component (34-5), wherein the first supporting column (34-1) and the second supporting column (34-2) are respectively disposed at two ends of the transverse supporting member (34-3), and the grasping mechanism (34-4) is suspended on the mechanism motion component (34-5) via a fourth axis connection mechanism. The gripping mechanism (34-4) comprises a gripping frame (34-4-1), a gripping cylinder (34-4-2), a gripping transmission rod (34-4-3), a transmission rod fixing sleeve (34-4-4) and a transmission lever (34-4-5); the gripping cylinder (34-4-2) is mounted on the gripping frame (34-4-1); a cylinder protection cover (34-4-6) is further provided on the outside of the gripping cylinder (34-4-2); The grabbing transmission rod (34-4-3) is slidably connected to the transmission rod fixing sleeve (34-4-4); one end of the grabbing transmission rod (34-4-3) is connected to the grabbing cylinder (34-4-2), and the other end is connected to the transmission lever (34-4-5); and a first hook (34-4-7) is provided at the bottom of the grabbing frame (34-4-1), and a second hook (34-4-8) is provided at the bottom of the transmission lever (34-4-5). When the workpiece (4) moves to the grabbing area (31-4) in the tunnel furnace, one end of the workpiece (4) moves to the first hook (34-4-7), the grabbing cylinder (34-4-2) drives the grabbing transmission rod (34-4-3) to translate, thereby driving the transmission lever (34-4-5) to swing, and the transmission lever (34-4-5) drives the second hook (34-4-8) to swing, thereby engaging the other end of the workpiece (4).

12. The thermoforming system according to claim 11, characterized in that The mechanism motion assembly (34-5) comprises a mechanism motion support body, a fourth-axis servo motor (34-5-1) mounted on the mechanism motion support body, a motor protection cover (34-5-2), a harmonic reducer (34-5-3), a driving component (34-5-4) and a heat insulation board (34-5-5), wherein the motor protection cover (34-5-2) is disposed on the fourth-axis servo motor (34-5-1), the harmonic reducer (34-5-3) is connected to the fourth-axis servo motor (34-5-1) and the driving component ( The heat insulation plate (34-5-5) is installed at one end of the driving component (34-5-4) close to the grasping mechanism (34-4), and the grasping mechanism (34-4) is installed on the driving component (34-5-4) and can follow the movement of the driving component (34-5-4); a cooling component (34-5-6) is also installed on the mechanism motion support body, and the cooling component (34-5-6) is used to introduce cold air into the mechanism motion support body to cool the fourth-axis servo motor (34-5-1).

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