A hot stamping experimental die and a method of using the same

Abstract

The application belongs to the technical field of hot stamping and particularly relates to a hot stamping experimental die and a use method thereof, wherein the hot stamping experimental die comprises a static die assembly, a dynamic die assembly and a plurality of telescopic pieces; the static die assembly comprises a lower fixed plate, the lower fixed plate is provided with a static die bottom plate, the static die bottom plate is provided with a replaceable concave die assembly of a local module, and the concave die assembly is provided with a first cooling cavity; the dynamic die assembly is arranged on the upper side of the static die assembly, the dynamic die assembly comprises an upper fixed plate, the lower bottom surface of the upper fixed plate is provided with a dynamic die bottom plate, the dynamic die bottom plate is provided with a replaceable convex die assembly of a local module, the convex die assembly can be embedded into the concave die assembly, and the convex die assembly is provided with a second cooling cavity. The application can optimize the cooling water channel of the hot stamping experimental die, thereby greatly reducing the manufacturing difficulty and cost of the hot stamping experimental die, facilitating the maintenance of the cooling water channel, improving the heat dissipation efficiency of the cooling water channel and not affecting the hot stamping experiment.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of hot stamping, and particularly relates to a hot stamping experimental die and a use method thereof. BACKGROUND

[0002] Hot stamping technology, also known as "stamping hardening" process, is an advanced manufacturing process of stamping forming after heating high-strength steel plate to high temperature, and the core is to heat the high-strength steel plate with an initial strength of 500-600 MPa to 880-950 DEG C, and then sent into the die equipped with a cooling system for stamping forming. In the pressure maintaining state, rapid quenching cooling is carried out at a high cooling speed of 20-300 DEG C / s, so that austenite is transformed into martensite, thereby significantly improving the strength of the part. Hot stamping is mainly used for producing high-strength and high-precision automobile parts, and is one of the key technologies to realize the light weight and safety of automobiles.

[0003] In the exploration process of hot stamping technology through hot stamping experiment, reasonably designing the hot stamping die is one of the important factors for the successful performance of the hot stamping experiment. For example, the Chinese patent with publication number CN107042264A discloses a hot stamping experimental die, which realizes rapid adjustment of the cooling water channel parameters by replacing the local module, saves the cost of remanufacturing the die, and can conveniently and quickly complete the comparative experiment by using cooling modules with different cooling water channel parameters on the symmetrical positions, which can meet the needs of the hot stamping experiment to a certain extent. However, the hot stamping experimental die still has the following problems: 1. Mechanical processing is needed in the die, which increases the manufacturing difficulty and cost of the experimental die, 2. If the cooling water channel has a problem, it is difficult to check and maintain, and the repair difficulty is large, 3. The cooling water channel adopts a single circular structure, and the heat dissipation efficiency is low, which can reduce the quenching effect and also affect the hot stamping experiment.

[0004] Therefore, in view of the above technical problems, it is necessary to provide a hot stamping experimental die and a use method thereof.

[0005] The information disclosed in this BACKGROUND section is only intended to increase an understanding of the general context in which the present application can be practiced. It is not admitted that any of the information provided in this BACKGROUND section constitutes prior art. SUMMARY

[0006] The purpose of the present application is to provide a hot stamping experimental die and a use method thereof, which can solve the problems of high manufacturing cost, high maintenance difficulty and low heat dissipation efficiency of the hot stamping experimental die.

[0007] In order to achieve the above-mentioned purpose, the technical scheme provided by an embodiment of the present application is as follows:

[0008] A hot stamping experimental die comprises a static die assembly, a dynamic die assembly and a plurality of telescopic members;

[0009] The static die assembly comprises a lower fixed plate, a static die bottom plate is mounted on the lower fixed plate, a partial module replaceable concave die assembly is mounted on the static die bottom plate, and a first cooling cavity is arranged in the concave die assembly;

[0010] The dynamic die assembly is arranged on the upper side of the static die assembly, the dynamic die assembly comprises an upper fixed plate, a dynamic die bottom plate is mounted on the lower bottom surface of the upper fixed plate, a partial module replaceable convex die assembly is mounted on the dynamic die bottom plate, the convex die assembly can be embedded in the concave die assembly, and a second cooling cavity is arranged in the convex die assembly;

[0011] The plurality of telescopic members are respectively connected between the lower fixed plate and the upper fixed plate, and springs are arranged outside the telescopic members.

[0012] In one or more embodiments of the present application, the concave die assembly comprises a concave die plate, the concave die plate is fixedly connected to the static die bottom plate, a first top plate is connected to the top of the concave die plate through bolts, a first cooling cavity is formed between the first top plate and the concave die plate, the first cooling cavity is used to replace the traditional cooling water channel, so that the contact area of the cooling liquid with the first top plate is larger, and the cooling efficiency of the cooling liquid on the first top plate and the experimental sample is improved, and the quenching effect of the experimental sample is improved.

[0013] Meanwhile, the cavity structure of the first cooling cavity is easy to process, so that the manufacturing difficulty and cost of the experimental die are reduced, and if there is a problem in the first cooling cavity, the inspection and maintenance are convenient.

[0014] In one or more embodiments of the present application, one pair of side walls of the concave die plate are provided with first module members, and the concave die plate and the pair of first module members form the concave die assembly.

[0015] The first module member is fixedly connected with a T-shaped block, the concave die plate is provided with a T-shaped groove matched with the T-shaped block, and the T-shaped block is slidably arranged in the T-shaped groove; the first module member can be replaced through the mutual cooperation of the T-shaped block and the T-shaped groove, and the cost of manufacturing a new experimental die is saved.

[0016] The first module member is provided with a second cooling cavity, the second cooling cavity is used to replace the traditional cooling water channel, so that the contact area of the cooling liquid with the first module member is larger, and the cooling efficiency of the cooling liquid on the first module member and the experimental sample is improved, and the quenching effect of the experimental sample is improved.

[0017] In one or more embodiments of the present invention, the concave template and a pair of first modular components are both connected with a first liquid inlet pipe and a first liquid outlet pipe, and the first liquid inlet pipe and the first liquid outlet pipe are respectively arranged on both sides of the concave template and the first modular component, and the first liquid inlet pipe and the first liquid outlet pipe on the concave template are both connected with the first cooling cavity, and the first liquid inlet pipe and the first liquid outlet pipe on the first modular component are both connected with the second cooling cavity, and the first liquid inlet pipe is arranged at the highest point of the second cooling cavity, and the first liquid outlet pipe is arranged at the lowest point of the second cooling cavity, so that the cooling liquid can flow obliquely in the second cooling cavity, avoiding temperature difference of the cooling liquid in the second cooling cavity, so as to ensure the cooling effect of the cooling liquid in the second cooling cavity on the experimental sample.

[0018] In one or more embodiments of the present invention, a pair of first fixing plates are symmetrically connected between the concave plate and the pair of first modular components by bolts, for fixing the concave plate and the first modular components;

[0019] The first liquid inlet pipe and the first liquid outlet pipe on the concave template and the first module both pass through the first fixed plate, which is convenient for injecting cooling liquid into the first cooling cavity and the second cooling cavity. At the same time, the first liquid inlet pipe and the first liquid outlet pipe pass through the first fixed plate, which can also play a fixing role and ensure the overall connection effect of the concave template and the first module.

[0020] In one or more embodiments of the present invention, the punch assembly includes a punch plate, which is fixedly connected to the movable mold base plate. The bottom of the punch plate is connected to a second top plate by bolts. A third cooling cavity is formed between the second top plate and the punch plate. Cooling liquid can be injected into the third cooling cavity. The cooling liquid in the third cooling cavity can be used to quench the experimental sample.

[0021] In one or more embodiments of the present invention, a pair of side walls of the male mold plate are slidably connected to a second module, and the male mold plate and the second module constitute a male mold assembly, and the experimental sample can be punched through the mutual cooperation of the male mold assembly and the female mold assembly;

[0022] A fourth cooling cavity is provided in the second module, and the fourth cooling cavity is used for the flow of cooling liquid so as to quench and cool the experimental sample.

[0023] In one or more embodiments of the present invention, the convex template and a pair of second module components are connected to a second liquid inlet pipe and a second liquid outlet pipe, and the second liquid inlet pipe and the second liquid outlet pipe are respectively arranged on both sides of the convex template and the second module component, and the second liquid inlet pipe and the second liquid outlet pipe on the convex template are both connected to the third cooling cavity, and the second liquid inlet pipe and the second liquid outlet pipe on the second module component are both connected to the fourth cooling cavity, and the second liquid inlet pipe is arranged at the highest point of the fourth cooling cavity, and the second liquid outlet pipe is arranged at the lowest point of the fourth cooling cavity.

[0024] In one or more embodiments of the present invention, a pair of second fixing plates are symmetrically connected between the male mold plate and the pair of second modular components by bolts, and the second liquid inlet pipe and the second liquid outlet pipe on the male mold plate and the second modular component both pass through the second fixing plates, and the second fixing plates are used to fix the male mold plate and the second modular component;

[0025] The first cooling cavity and the third cooling cavity are both installed with enhanced mixing mechanisms. A pair of enhanced mixing mechanisms are used to strengthen the strength of the first top plate and the second top plate respectively, and are also used to mix the cooling liquid in the first cooling cavity and the third cooling cavity.

[0026] A method for using a hot stamping experimental mold comprises the following steps:

[0027] S1. Assemble the die assembly and the punch assembly according to the experimental requirements to punch the experimental sample into the shape required by the experiment;

[0028] S2. placing the experimental sample between the female die assembly and the male die assembly, and controlling the male die assembly and the female die assembly to close the mold, thereby completing the stamping and shaping of the experimental sample;

[0029] S3. During the stamping and shaping stage, flowing cooling liquid is injected into the first cooling channel, the second cooling channel, the third cooling channel, and the fourth cooling channel, respectively, and the experimental sample is rapidly quenched and cooled by the flowing cooling liquid;

[0030] S4. Since the second cooling channel and the fourth cooling channel are arranged obliquely, a temperature difference can be avoided when the cooling liquid flows in the second cooling channel and the fourth cooling channel, thereby ensuring the cooling effect of the cooling liquid in the second cooling channel and the fourth cooling channel on the experimental sample;

[0031] S5. The cooling liquid in the first cooling channel and the third cooling channel is evenly diffused under the action of the enhanced mixing mechanism, which can also avoid temperature differences, thereby ensuring the cooling effect of the cooling liquid in the first cooling channel and the third cooling channel on the experimental sample.

[0032] Compared with the prior art, the hot stamping test mold and its use method of the present invention can optimize the cooling water channel of the hot stamping test mold, thereby greatly reducing the manufacturing difficulty and cost of the hot stamping test mold. At the same time, it also facilitates the maintenance of the cooling water channel, improves the heat dissipation efficiency of the cooling water channel, and will not affect the hot stamping experiment. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0034] Figure 1 A three-dimensional diagram from a first angle of a hot stamping experimental die in an unused state according to an embodiment of the present invention;

[0035] Figure 2 A second-angle stereoscopic view of a hot stamping experimental die in an unused state according to an embodiment of the present invention;

[0036] Figure 3 A three-dimensional diagram of a static mold assembly in one embodiment of the present invention;

[0037] Figure 4 for Figure 3 Schematic diagram of the structure at A in the middle;

[0038] Figure 5 A cross-sectional view of a static mold assembly in one embodiment of the present invention;

[0039] Figure 6 for Figure 5 Schematic diagram of the structure at B in the middle;

[0040] Figure 7 for Figure 5 Schematic diagram of the structure at C in the middle;

[0041] Figure 8 An exploded view of a movable mold assembly in one embodiment of the present invention;

[0042] Figure 9 for Figure 8 Schematic diagram of the structure at D in the middle;

[0043] Figure 10 A schematic diagram of a partial structure of an enhanced homogenous mixing mechanism in one embodiment of the present invention;

[0044] Figure 11 This is a cross-sectional view of a hot stamping experimental die in an unused state according to an embodiment of the present invention;

[0045] Figure 12 for Figure 11 Schematic diagram of the structure at E in the middle;

[0046] Figure 13 This is a front view of a hot stamping test die in use according to one embodiment of the present invention.

[0047] Description of main reference numerals:

[0048] 1-static mold assembly, 101-lower fixed plate, 102-static mold bottom plate, 103-concave mold plate, 1031-first top plate, 1032-first cooling cavity, 104-first modular component, 1041-T-block, 1042-second cooling cavity, 105-first fixed plate, 2-movable mold assembly, 201-upper fixed plate, 202-movable mold bottom plate, 203-convex mold plate, 2031-second top plate, 204-second modular component, 205-second fixed plate, 3-telescopic component, 301-spring, 4-reinforced mixing mechanism, 401-reinforcement plate, 4011-liquid distribution cavity, 4012-liquid outlet, 402-reinforcement column, 4021-through cavity, 4022-connecting hole, 403-connecting sleeve, 404-rotating tube, 4041-drainage hole. DETAILED DESCRIPTION

[0049] In order to enable those skilled in the art to better understand the technical solutions of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of 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 making creative efforts should fall within the scope of protection of the present invention.

[0050] like Figures 1 to 13 As shown, a hot stamping experimental die in one embodiment of the present invention includes a static die assembly 1, a movable die assembly 2 and a plurality of telescopic parts 3.

[0051] like Figures 1 to 7 As shown, the static die assembly 1 includes a lower fixed plate 101, on which a static die base plate 102 is mounted. The static die base plate 102 is used to mount a concave die assembly, which cooperates with the convex die assembly to stamp experimental samples.

[0052] Among them, a die assembly with replaceable partial modules is installed on the static mold base plate 102. The replaceable module design is used to greatly reduce the manufacturing cost of the experimental mold. A first cooling cavity is provided in the die assembly, and the first cooling cavity is a first cooling channel 1032 and a second cooling channel 1042. The present application replaces the cooling water channel in the die assembly with the first cooling cavity, which not only greatly reduces the manufacturing difficulty and cost of the die assembly, but also facilitates the maintenance of the cooling water channel, and can also increase the contact area between the cooling liquid and the die assembly, thereby greatly improving the quenching cooling efficiency of the experimental sample, will not affect the hot stamping experiment, and can also improve the experimental efficiency.

[0053] like Figures 1 to 13As shown, the die assembly includes a die plate 103, which is fixedly connected to the static die base plate 102. A first top plate 1031 is bolted to the top of the die plate 103. A first cooling channel 1032 is formed between the first top plate 1031 and the die plate 103. Replacing the traditional cooling water channel with the first cooling channel 1032 increases the contact area between the cooling liquid and the first top plate 1031, thereby increasing the quenching efficiency of the cooling liquid on the first top plate 1031 and the experimental sample, thereby improving the quenching effect of the experimental sample.

[0054] Furthermore, the first cooling channel 1032 formed by the concave plate 103 and the first top plate 1031 is easy to manufacture, thereby reducing the difficulty and cost of manufacturing the experimental mold. Furthermore, if a problem occurs within the first cooling channel 1032, the first top plate 1031 can be separated from the concave plate 103 for easier inspection and maintenance.

[0055] Among them, a pair of side walls of the concave mold plate 103 are each provided with a first module 104, and the concave mold plate 103 and the pair of first module 104 together constitute a concave mold assembly, that is, Figure 3 The shape shown.

[0056] Furthermore, a T-block 1041 is fixedly connected to the first module 104, and a T-slot is provided on the recessed mold plate 103 to match the T-block 1041. The T-block 1041 slides within the T-slot. The interaction between the T-block 1041 and the T-slot allows for modular replacement of the first module 104, thereby reducing the cost of remanufacturing the experimental mold.

[0057] Specifically, a second cooling channel 1042 is provided in the first module 104. The second cooling channel 1042 is used to replace the traditional cooling water channel, so that the contact area between the cooling liquid and the first module 104 is larger, thereby improving the cooling efficiency of the cooling liquid on the first module 104 and the experimental sample, and improving the quenching effect of the experimental sample.

[0058] Preferably, the cooling liquid in this application is cooling water.

[0059] like Figures 1 to 13 As shown, the concave plate 103 and a pair of first modular components 104 are connected to a first liquid inlet pipe and a first liquid outlet pipe, and the first liquid inlet pipe and the first liquid outlet pipe are respectively arranged on both sides of the concave plate 103 and the first modular component 104, so that the cooling liquid can enter the first cooling cavity 1032 and / or the second cooling cavity 1042, thereby greatly improving the contact area between the cooling liquid and the concave plate 103 or the first modular component 104, so that the concave plate 103 or the first modular component 104 has a better quenching cooling effect on the experimental sample.

[0060] The first liquid inlet pipe and the first liquid outlet pipe on the concave plate 103 are both connected to the first cooling channel 1032. The first liquid inlet pipe and the first liquid outlet pipe on the first module 104 are both connected to the second cooling channel 1042. The first liquid inlet pipe is located at the highest point of the second cooling channel 1042, and the first liquid outlet pipe is located at the lowest point of the second cooling channel 1042. This allows the cooling liquid to flow obliquely in the second cooling channel 1042, avoiding temperature differences in the cooling liquid in the second cooling channel 1042 and ensuring the cooling effect of the cooling liquid in the second cooling channel 1042 on the experimental sample.

[0061] In addition, the first liquid inlet pipe on the concave template 103 and the first liquid inlet pipe on the first module 104 can be connected through a branch pipe, thereby reducing the number of connecting joints between the first liquid inlet pipe and the water supply pipe, avoiding interference caused by too many connecting joints and making installation difficulties of the connecting joints.

[0062] Specifically, a pair of first fixing plates 105 are symmetrically connected between the concave template 103 and a pair of first modular components 104 by bolts. The first fixing plates 105 are used to fix the concave template 103 and the first modular components 104 to ensure the assembly firmness of the concave template 103 and the first modular components 104 so as to perform stamping tests on the experimental samples.

[0063] In addition, the first liquid inlet pipe and the first liquid outlet pipe on the concave template 103 and the first module component 104 both pass through the first fixed plate 105, which is convenient for injecting cooling liquid into the first cooling cavity 1032 and the second cooling cavity 1042. At the same time, the first liquid inlet pipe and the first liquid outlet pipe pass through the first fixed plate 105, and can also play a role in positioning the first fixed plate 105, making it convenient to use bolts and the first fixed plate 105 to fix the concave template 103 and a pair of first module components 104.

[0064] like Figures 1 to 13 As shown, the movable mold assembly 2 is arranged on the upper side of the static mold assembly 1, and the movable mold assembly 2 and the static mold assembly 1 cooperate with each other to perform a stamping test on the experimental sample.

[0065] The movable mold assembly 2 includes an upper fixed plate 201, with a cylinder mounted on its upper end. This cylinder controls the movement of the movable mold assembly 2 along the telescopic member 3 to complete the stamping test of the experimental sample. The lower surface of the upper fixed plate 201 is mounted with a movable mold base 202. Mounted on this base 202 is a partially replaceable male mold assembly that can be inserted into the female mold assembly. The male and female mold assemblies correspond and can be replaced simultaneously, allowing the male and female mold assemblies to be inserted into each other to complete the stamping test of the experimental sample. Furthermore, the replaceable modular design significantly reduces the manufacturing cost of the experimental mold.

[0066] In addition, a second cooling cavity is provided in the punch assembly, and the second cooling cavity is a third cooling channel and a fourth cooling channel. The present application replaces the cooling channels in the punch assembly with the second cooling cavity, which not only greatly reduces the manufacturing difficulty and cost of the punch assembly, but also facilitates the maintenance of the cooling channels in the punch assembly, and can also increase the contact area between the cooling liquid and the punch assembly, thereby greatly improving the quenching cooling efficiency of the experimental sample, without affecting the hot stamping experiment, and can also improve the experimental efficiency.

[0067] like Figures 1 to 13 As shown, the punch assembly includes a punch plate 203, which is fixedly connected to the movable mold base plate 202. The bottom of the punch plate 203 is bolted to a second top plate 2031. A third cooling channel is formed between the second top plate 2031 and the punch plate 203. Cooling liquid can be injected into the third cooling channel to quench the experimental sample.

[0068] The male plate 203 has a pair of sidewalls slidably connected to a second module 204. The connection method for the second module 204 is the same as that for the first module 104, allowing for replacement of the second module 204. The male plate 203 and the second module 204 constitute a male die assembly. The interaction of the male and female die assemblies allows for the stamping of experimental samples.

[0069] In addition, a fourth cooling cavity is provided in the second module 204 , and the fourth cooling cavity is used for the flow of cooling liquid so as to quench the experimental sample.

[0070] Preferably, the concave plate 103, the first modular component 104, the convex plate 203, and the second modular component 204 are all made of the same material, H13 steel. Furthermore, the first modular component 104 and the second modular component 204 are both manufactured using a forging process, thereby enabling the fabrication of the second cooling channel 1042 and the fourth cooling channel. Compared to fabricating multiple cooling channels on the first modular component 104 or the second modular component 204, the fabrication of the second cooling channel 1042 and the fourth cooling channel in this application is less expensive and less challenging.

[0071] like Figures 1 to 13 As shown, the convex plate 203 and a pair of second modular components 204 are connected to a second liquid inlet pipe and a second liquid outlet pipe, and the second liquid inlet pipe and the second liquid outlet pipe are respectively arranged on both sides of the convex plate 203 and the second modular component 204, so that the cooling liquid can enter the third cooling cavity and / or the fourth cooling cavity, thereby greatly improving the contact area between the cooling liquid and the convex plate 203 or the second modular component 204, so that the convex plate 203 or the second modular component 204 has a better quenching cooling effect on the experimental sample.

[0072] Among them, the second liquid inlet pipe and the second liquid outlet pipe on the convex template 203 are both connected to the third cooling cavity, and the second liquid inlet pipe and the second liquid outlet pipe on the second module 204 are both connected to the fourth cooling cavity, and the second liquid inlet pipe is arranged at the highest point of the fourth cooling cavity, and the second liquid outlet pipe is arranged at the lowest point of the fourth cooling cavity, so that the cooling liquid can flow obliquely in the fourth cooling cavity, avoiding temperature difference of the cooling liquid in the fourth cooling cavity, so as to ensure the cooling effect of the cooling liquid in the fourth cooling cavity on the experimental sample.

[0073] In addition, electromagnetic proportional valves are installed on the first liquid inlet pipe and the second liquid inlet pipe to control the flow rate of cooling liquid entering the first cooling cavity 1032, the second cooling cavity 1042, the third cooling cavity or the fourth cooling cavity. That is, the greater the flow rate of cooling liquid, the faster the cooling rate, so as to ensure that the cooling liquid in the concave template 103, the first module 104, the convex template 203 and the second module 204 can synchronously cool the experimental sample, avoid the problem of uneven quenching cooling of the experimental sample, and thus ensure the quenching cooling effect of the experimental sample.

[0074] Specifically, a plurality of temperature measuring holes are provided on the surfaces of the concave plate 103, the first module 104, the convex plate 203, and the second module 204. The number of temperature measuring holes is not less than 2. Temperature sensors are installed in the temperature measuring holes to monitor the surface temperature of the experimental sample.

[0075] If the temperature sensor detects a temperature difference on the surface of the experimental sample, it will promptly adjust the electromagnetic proportional valve on the liquid inlet pipe connected to the cooling cavity in the higher temperature area to increase the flow of cooling liquid into the area, thereby accelerating the quenching cooling efficiency of the experimental sample in the area, that is, the experimental sample can be temperature controlled in different areas.

[0076] When the temperature sensor detects that there is no temperature difference on the surface of the experimental sample, the electromagnetic proportional valve will be adjusted to make the flow rate of cooling liquid entering different cooling channels the same, and the experimental sample will continue to be quenched and cooled.

[0077] In addition, a pair of second fixing plates 205 are symmetrically connected between the male plate 203 and the pair of second modular components 204 via bolts. The second fixing plates 205 are used to secure the male plate 203 and the second modular components 204, ensuring the secure assembly of the male plate 203 and the second modular components 204, facilitating the stamping test of the experimental sample. The second liquid inlet and second liquid outlet pipes on the male plate 203 and the second modular components 204 both pass through the second fixing plates 205, facilitating the injection of cooling liquid into the third and fourth cooling channels. Furthermore, the second liquid inlet and second liquid outlet pipes passing through the second fixing plates 205 also serve to position the second fixing plates 205, facilitating the fastening of the male plate 203 and the pair of second modular components 204 using bolts and the second fixing plates 205.

[0078] like Figure 1 As shown, multiple telescopic members 3 are connected between the lower fixed plate 101 and the upper fixed plate 201, and springs 301 are provided on the outside of the telescopic members 3. The telescopic members 3 and springs 301 are used to connect the static mold assembly 1 and the movable mold assembly 2, and are also used to guide the movement of the movable mold assembly 2 to complete the stamping experiment of the experimental sample.

[0079] like Figures 1 to 13 As shown, the first cooling channel 1032 and the third cooling channel are both installed with a reinforcing mixing mechanism 4. A pair of reinforcing mixing mechanisms 4 are respectively used to strengthen the strength of the first top plate 1031 and the second top plate 2031 to avoid the first top plate 1031 and the second top plate 2031 from being dented when stamping the experimental sample. At the same time, the reinforcing mixing mechanism 4 is also used to mix the cooling liquid in the first cooling channel 1032 and the third cooling channel to avoid temperature difference in the cooling liquid, thereby ensuring the quenching cooling effect of the concave template 103 and the convex template 203 on the experimental sample.

[0080] The reinforced mixing mechanism 4 includes a reinforcing plate 401, which has a liquid distribution chamber 4011 therein. A connector is mounted on the reinforcing plate 401, to which a first liquid inlet pipe and a second liquid inlet pipe are connected, respectively. Cooling liquid can enter the liquid distribution chamber 4011 through the first or second liquid inlet pipe. During assembly, the reinforcing plate 401 and reinforcing column 402 are placed in the first cooling channel 1032 or the third cooling channel, the first or second liquid inlet pipe is connected to the connector, and the first top plate 1031 is bolted to the concave plate 103, or the second top plate 2031 is bolted to the convex plate 203. This is simple and convenient.

[0081] In addition, the reinforcing plate 401 is provided with a plurality of liquid outlet holes 4012, and the liquid distribution cavity 4011 is connected to the first cooling channel 1032 or the third cooling channel through the liquid outlet holes 4012. The cooling liquid in the liquid distribution cavity 4011 is evenly dispersed into the first cooling channel 1032 or the third cooling channel through the liquid outlet holes 4012.

[0082] Compared with the mode of directly conveying the cooling liquid into the first cooling cavity 1032 or the third cooling cavity, the application can make the cooling liquid more evenly dispersed in the subsequent flow process by the arrangement of the reinforcing plate 401, avoid the temperature difference of the cooling liquid in the first cooling cavity 1032 or the third cooling cavity, and thus ensure the quenching cooling effect of the concave die plate 103 and the convex die plate 203 on the experimental sample.

[0083] Specifically, the reinforcing plate 401 is fixedly connected with a plurality of reinforcing columns 402 which are uniformly distributed and coplanar with the liquid preparation cavity 4011. When the first top plate 1031 is installed on the concave die plate 103, the reinforcing plate 401 is in contact with the bottom wall of the first cooling cavity 1032, and the reinforcing column 402 is in contact with the inner wall of the first top plate 1031, thereby playing a supporting role and avoiding the concave die plate 103 from being depressed when stamping the experimental sample.

[0084] At the same time, the heat on the surface of the concave die plate 103 is transmitted through the reinforcing column 402, and the cooling liquid can flow in the through cavity 4021 and the outer surface of the reinforcing column 402, thereby greatly improving the quenching cooling efficiency of the cooling liquid on the experimental sample and shortening the experimental time.

[0085] The reinforcing and mixing mechanism 4 in the third cooling cavity has the same effect as above.

[0086] In addition, the reinforcing column 402 is provided with a through cavity 4021 which is in communication with the liquid preparation cavity 4011. Part of the cooling liquid in the liquid preparation cavity 4011 enters the through cavity 4021, and the cooling liquid in the through cavity 4021 can accelerate the quenching cooling efficiency of the experimental sample.

[0087] As shown in Figures 1 to 13 The side wall of the reinforcing column 402 is rotatably connected with a connecting sleeve 403 which is arranged on the side of the reinforcing column 402 away from the reinforcing plate 401. The side wall of the reinforcing column 402 is provided with a plurality of communication holes 4022, and the inside of the connecting sleeve 403 is in communication with the through cavity 4021 through the communication holes 4022. The cooling liquid in the through cavity 4021 enters the connecting sleeve 403 through the communication holes 4022.

[0088] A pair of rotating tubes 404 are fixedly connected to the connecting sleeve 403, and the rotating tubes 404 are provided with a plurality of drainage holes 4041. The cooling liquid within the connecting sleeve 403 flows into the rotating tubes 404 and is then discharged through the drainage holes 4041. Since the drainage holes 4041 on the rotating tubes 404 are arranged in the same direction, when the cooling liquid is discharged through the drainage holes 4041, it can drive the rotating tubes 404 to rotate around the connecting sleeve 403. The cooling liquid discharged by the rotating rotating tubes 404 and the drainage holes 4012 can effectively mix the cooling liquid in the first cooling channel 1032 or the third cooling channel, avoiding temperature differences in the cooling liquid and thus ensuring the quenching cooling effect of the experimental sample.

[0089] A method for using a hot stamping experimental mold comprises the following steps:

[0090] S1. Assemble the concave mold assembly and the convex mold assembly according to the experimental requirements, that is, install a pair of first modules 104 on the concave mold plate 103 by means of sliding connection, fix the concave mold plate 103 and the first modules 104 by means of bolts and the first fixing plate 105, install a pair of second modules 204 on the convex mold plate 203, fix the convex mold plate 203 and the second modules 204 by means of bolts and the second fixing plate 205, and obtain Figure 1 The state shown is to punch the experimental sample into the shape required for the experiment;

[0091] S2, placing the experimental sample between the female die assembly and the male die assembly, and then controlling the male die assembly and the female die assembly to close the mold, thereby completing the stamping and shaping of the experimental sample;

[0092] S3. During the stamping and shaping stage, flowing cooling liquid is injected into the first cooling channel 1032, the second cooling channel 1042, the third cooling channel, and the fourth cooling channel, respectively, and both sides of the experimental sample are rapidly quenched and cooled by the flowing cooling liquid;

[0093] S4. Since the second cooling channel 1042 and the fourth cooling channel are arranged at an angle, a temperature difference can be avoided when the cooling liquid flows in the second cooling channel 1042 and the fourth cooling channel, thereby ensuring the cooling effect of the cooling liquid in the second cooling channel 1042 and the fourth cooling channel on the experimental sample;

[0094] S5. The cooling liquid in the first cooling channel 1032 and the third cooling channel is evenly diffused under the action of the enhanced mixing mechanism 4, which can also avoid temperature differences, thereby ensuring the cooling effect of the cooling liquid in the first cooling channel 1032 and the third cooling channel on the experimental sample;

[0095] S6. Through the cooperation of the temperature sensor and the electromagnetic proportional valve on the liquid inlet pipe, the flow rate of the cooling liquid in the cooling cavity can be regulated, and then the zoned temperature control of the experimental sample can be achieved to ensure that the experimental sample can be cooled evenly, thereby greatly improving the quenching cooling effect of the experimental sample.

[0096] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the invention can be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be included therein. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

[0097] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A hot stamping test die, characterized in that: include: a static mold assembly, wherein the static mold assembly includes a lower fixed plate, a static mold base plate is installed on the lower fixed plate, a partially replaceable die assembly is installed on the static mold base plate, a first cooling cavity is provided in the die assembly, the die assembly includes a die plate, the die plate is fixedly connected to the static mold base plate, a first top plate is connected to the top of the die plate by bolts, a first cooling cavity is formed between the first top plate and the die plate, a pair of side walls of the die plate are each provided with a first module, a T-block is fixedly connected to the first module, a T-slot matching the T-block is provided on the die plate, the T-block is slidably arranged in the T-slot, and a second cooling cavity is provided in the first module; The movable mold assembly is arranged on the upper side of the static mold assembly, the movable mold assembly includes an upper fixed plate, the lower bottom surface of the upper fixed plate is installed with a movable mold base plate, the movable mold base plate is installed with a partially replaceable male mold assembly, the male mold assembly can be embedded in the female mold assembly, the male mold assembly is provided with a second cooling cavity, the male mold assembly includes a male mold plate, the male mold plate is fixedly connected to the movable mold base plate, the bottom of the male mold plate is connected to a second top plate by bolts, a third cooling cavity is formed between the second top plate and the male mold plate, a pair of side walls of the male mold plate are slidably connected to the second module, and the second module is provided with a fourth cooling cavity; The first cooling channel and the third cooling channel are both equipped with a reinforcing mixing mechanism, and a pair of the reinforcing mixing mechanisms are respectively used to strengthen the strength of the first top plate and the second top plate, and at the same time are used to mix the cooling liquid in the first cooling channel and the third cooling channel. The reinforcing mixing mechanism includes a reinforcing plate, a liquid distribution cavity is provided in the reinforcing plate, a surface of the reinforcing plate is provided with a plurality of liquid outlet holes, and the liquid distribution cavity is connected with the first cooling channel or the third cooling channel through the liquid outlet holes. A plurality of evenly distributed reinforcing columns are fixedly connected to the reinforcing plate, a through cavity is provided in the reinforcing column, and the through cavity is connected with the liquid distribution cavity. A connecting sleeve is rotatably connected to the side wall of the reinforcing column, and the connecting sleeve is provided on a side of the reinforcing column away from the reinforcing plate. The side wall of the reinforcing column is provided with a plurality of communicating holes, and the interior of the connecting sleeve is connected with the through cavity through the communicating hole. A pair of rotating tubes are fixedly connected to the connecting sleeve, and the rotating tube is provided with a plurality of drainage holes. A plurality of telescopic members are respectively connected between the lower fixed plate and the upper fixed plate, and springs are arranged on the outer sides of the telescopic members.

2. A hot stamping experimental die according to claim 1, characterized in that: The concave template and a pair of first modular components are both connected with a first liquid inlet pipe and a first liquid outlet pipe, and the first liquid inlet pipe and the first liquid outlet pipe are respectively arranged on both sides of the concave template and the first modular component. The first liquid inlet pipe and the first liquid outlet pipe on the concave template are both connected with the first cooling cavity, and the first liquid inlet pipe and the first liquid outlet pipe on the first modular component are both connected with the second cooling cavity, and the first liquid inlet pipe on the first modular component is arranged at the highest point of the second cooling cavity, and the first liquid outlet pipe on the first modular component is arranged at the lowest point of the second cooling cavity.

3. A hot stamping experimental die according to claim 2, characterized in that: A pair of first fixing plates are symmetrically connected between the concave template and the pair of first modular components via bolts. The first liquid inlet pipes and the first liquid outlet pipes on the concave template and the first modular components all pass through the first fixing plates.

4. A hot stamping experimental die according to claim 3, characterized in that: The male template and a pair of second modular components are both connected with a second liquid inlet pipe and a second liquid outlet pipe, and the second liquid inlet pipe and the second liquid outlet pipe are respectively arranged on both sides of the male template and the second modular component. The second liquid inlet pipe and the second liquid outlet pipe on the male template are both connected with the third cooling cavity, and the second liquid inlet pipe and the second liquid outlet pipe on the second modular component are both connected with the fourth cooling cavity, and the second liquid inlet pipe on the second modular component is arranged at the highest point of the fourth cooling cavity, and the second liquid outlet pipe on the second modular component is arranged at the lowest point of the fourth cooling cavity.

5. The hot stamping experimental die according to claim 4, characterized in that: A pair of second fixing plates are symmetrically connected between the male template and the pair of second modular components by bolts, and the second liquid inlet pipe and the second liquid outlet pipe on the male template and the second modular component both pass through the second fixing plates.

6. A method for using the hot stamping test mold according to claim 5, characterized in that: The following steps are involved: S1. Assemble the die assembly and the punch assembly according to the experimental requirements to punch the experimental sample into the shape required by the experiment; S2. placing the experimental sample between the female die assembly and the male die assembly, and controlling the male die assembly and the female die assembly to close the mold, thereby completing the stamping and shaping of the experimental sample; S3. During the stamping and shaping stage, flowing cooling liquid is injected into the first cooling channel, the second cooling channel, the third cooling channel, and the fourth cooling channel, respectively, and the experimental sample is rapidly quenched and cooled by the flowing cooling liquid; S4. Since the second cooling channel and the fourth cooling channel are arranged obliquely, a temperature difference can be avoided when the cooling liquid flows in the second cooling channel and the fourth cooling channel, thereby ensuring the cooling effect of the cooling liquid in the second cooling channel and the fourth cooling channel on the experimental sample; S5. The cooling liquid in the first cooling channel and the third cooling channel is evenly diffused under the action of the enhanced mixing mechanism, which can also avoid temperature differences, thereby ensuring the cooling effect of the cooling liquid in the first cooling channel and the third cooling channel on the experimental sample.

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