Hot stamping experiment mold and using method thereof

Abstract

The invention belongs to the technical field of hot stamping, and particularly relates to a hot stamping experiment die and a using method thereof.The hot stamping experiment die comprises a static die assembly, a movable die assembly and a plurality of telescopic parts; the static die assembly comprises a lower fixing plate, a static die bottom plate is installed on the lower fixing plate, a female die assembly with a replaceable local module is installed on the static die bottom plate, and a first cooling cavity is formed in the female die assembly. The movable die assembly is arranged on the upper side of the static die assembly and comprises an upper fixing plate, a movable die bottom plate is installed on the lower bottom face of the upper fixing plate, a male die assembly with replaceable local modules is installed on the movable die bottom plate, the male die assembly can be embedded into the female die assembly, and a second cooling cavity is formed in the male die assembly. The cooling water channel of the hot stamping experiment mold can be optimized, the manufacturing difficulty and cost of the hot stamping experiment mold can be greatly reduced, meanwhile, maintenance of the cooling water channel is facilitated, the heat dissipation efficiency of the cooling water channel is improved, and a hot stamping experiment cannot be affected.

Description

Technical Field

[0001] The present invention belongs to the technical field of hot stamping, and particularly relates to a hot stamping experimental mold and a using method thereof. Background Art

[0002] Hot stamping technology, also known as the "stamping hardening" process, is an advanced manufacturing process that stamps high-strength steel plates after heating them to a high temperature. Its core lies in heating high-strength steel plates with an initial strength of 500 - 600 MPa to 880 - 950 °C, and then feeding them into a mold equipped with a cooling system for stamping. Under the pressure-holding state, rapid quenching and cooling are carried out at a high cooling rate of 20 - 300 °C / s, causing austenite to transform into martensite, thereby significantly improving the strength of the parts. Hot stamping is mainly used for producing high-strength and high-precision automotive parts and is one of the key technologies for achieving automotive lightweight and safety.

[0003] In the process of exploring hot stamping technology through hot stamping experiments, reasonably designing the hot stamping mold is one of the important factors for the successful conduct of hot stamping experiments. For example, a Chinese patent with the publication number: CN107042264A discloses a hot stamping experimental mold, which realizes the rapid adjustment of cooling water channel parameters through the replacement of local modules, saving the cost of remanufacturing the mold; by using cooling modules with different cooling water channel parameters at symmetric positions, comparative experiments can be conveniently and quickly completed, and to a certain extent, the requirements of hot stamping experiments can be met. However, this hot stamping experimental mold still has the following problems: 1. Mechanical processing needs to be carried out inside the mold, increasing the manufacturing difficulty and cost of the experimental mold; 2. If there are problems with the cooling water channels, it is difficult to inspect and maintain, and the repair difficulty is high; 3. The cooling water channels adopt a single circular structure, with low heat dissipation efficiency, which is likely to 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 mold and a using method thereof.

[0005] The information disclosed in this background art section is only intended to enhance the overall understanding of the present invention and should not be regarded as an admission or any form of implication that this information constitutes prior art already known to those of ordinary skill in the art. Summary of the Invention

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

[0007] To achieve the above purpose, the technical solution provided by a specific embodiment of the present invention is as follows:

[0008] A hot stamping experimental die, comprising: a static die assembly, a moving die assembly, and a plurality of telescopic members;

[0009] The static die assembly includes a lower fixing plate, on which a static die bottom plate is installed, and on the static die bottom plate, a die cavity assembly with replaceable local modules is installed, and a first cooling cavity is arranged in the die cavity assembly;

[0010] The moving die assembly is arranged on the upper side of the static die assembly. The moving die assembly includes an upper fixing plate, a moving die bottom plate is installed on the lower bottom surface of the upper fixing plate, and a punch assembly with replaceable local modules is installed on the moving die bottom plate. The punch assembly can be embedded into the die cavity assembly, and a second cooling cavity is arranged in the punch assembly;

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

[0012] In one or more embodiments of the present invention, the die cavity assembly includes a die cavity plate, the die cavity plate is fixedly connected to the static die bottom plate, a first top plate is connected to the top of the die cavity plate by bolts, and a first cooling channel is formed between the first top plate and the die cavity plate. Using the first cooling channel to replace the traditional cooling water channel makes the contact area between the cooling liquid and the first top plate larger, thereby improving the cooling efficiency of the cooling liquid for the first top plate and the experimental sample, and improving the quenching effect of the experimental sample;

[0013] At the same time, the cavity structure of the first cooling channel is also easy to process, thereby reducing the manufacturing difficulty and cost of the experimental die. If there are problems in the first cooling channel, it is also convenient to check and maintain.

[0014] In one or more embodiments of the present invention, a pair of side walls of the die cavity plate are respectively provided with first module members, and the die cavity plate and the pair of first module members form the die cavity assembly;

[0015] A T-shaped block is fixedly connected to the first module member, and a T-shaped groove matching the T-shaped block is arranged on the die cavity plate. The T-shaped block is slidably arranged in the T-shaped groove. Through the mutual cooperation of the T-shaped block and the T-shaped groove of the first module member, the replacement of the first module member can be realized, saving the cost of remanufacturing the experimental die;

[0016] A second cooling channel is arranged in the first module member. Using the second cooling channel to replace the traditional cooling water channel makes the contact area between the cooling liquid and the first module member larger, thereby improving the cooling efficiency of the cooling liquid for the first module member and the experimental sample, and improving the quenching effect of the experimental sample.

[0017] In one or more embodiments of the present invention, a first liquid inlet pipe and a first liquid outlet pipe are connected to both the concave template and a pair of first module members. The first liquid inlet pipe and the first liquid outlet pipe are respectively arranged on both sides of the concave template and the first module member. The first liquid inlet pipe and the first liquid outlet pipe on the concave template are both communicated with a first cooling channel, and the first liquid inlet pipe and the first liquid outlet pipe on the first module member are both communicated with a second cooling channel. Moreover, the first liquid inlet pipe is arranged at the highest position of the second cooling channel, and the first liquid outlet pipe is arranged at the lowest position of the second cooling channel, so that the cooling liquid can flow obliquely in the second cooling channel, avoiding temperature difference of the cooling liquid in the second cooling channel, and ensuring the cooling effect of the cooling liquid in the second cooling channel 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 template and a pair of first module members by bolts, for fixing the concave template and the first module member;

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

[0020] In one or more embodiments of the present invention, the convex die assembly includes a convex template, the convex template is fixedly connected to the moving die bottom plate, a second top plate is connected to the bottom of the convex template by bolts, and a third cooling channel is formed between the second top plate and the convex template. Cooling liquid can be injected into the third cooling channel, and the cooling liquid in the third cooling channel can be used to perform quenching cooling on the experimental sample.

[0021] In one or more embodiments of the present invention, a pair of second module members are slidably connected to both side walls of the convex template. The convex template and the second module member constitute the convex die assembly. Through the mutual cooperation of the convex die assembly and the concave die assembly, the experimental sample can be stamped;

[0022] A fourth cooling channel is arranged in the second module member, and the fourth cooling channel is used for the flow of cooling liquid, so as to perform quenching cooling on the experimental sample.

[0023] In one or more embodiments of the present invention, a second liquid inlet pipe and a second liquid outlet pipe are connected to both the convex template and a pair of second module members. 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 member. The second liquid inlet pipe and the second liquid outlet pipe on the convex template are both communicated with the third cooling channel, and the second liquid inlet pipe and the second liquid outlet pipe on the second module member are both communicated with the fourth cooling channel. Moreover, the second liquid inlet pipe is arranged at the highest position of the fourth cooling channel, and the second liquid outlet pipe is arranged at the lowest position of the fourth cooling channel.

[0024] In one or more embodiments of the present invention, a pair of second fixing plates are symmetrically connected between the convex template and a pair of second module members by bolts. The second liquid inlet pipes and second liquid outlet pipes on the convex template and the second module members penetrate through the second fixing plates, and the second fixing plates are used to fix the convex template and the second module members;

[0025] Reinforcing and homogenizing mechanisms are installed in both the first cooling channel and the third cooling channel. A pair of the reinforcing and homogenizing mechanisms are respectively used to strengthen the strength of the first top plate and the second top plate, and at the same time to homogenize the cooling liquid in the first cooling channel and the third cooling channel.

[0026] A method for using a hot stamping experiment die includes the following steps:

[0027] S1. According to the experimental requirements, assemble the concave die assembly and the convex die assembly for stamping the experimental sample into the shape required by the experiment;

[0028] S2. Place the experimental sample between the concave die assembly and the convex die assembly, and control the convex die assembly and the concave die assembly to close the die, thereby completing the stamping and shaping of the experimental sample;

[0029] S3. In the stamping and shaping stage, inject flowing cooling liquid into the first cooling channel, the second cooling channel, the third cooling channel and the fourth cooling channel respectively, and use the flowing cooling liquid to quickly quench and cool the experimental sample;

[0030] S4. Since the second cooling channel and the fourth cooling channel are inclined, the cooling liquid can avoid temperature difference when flowing in the second cooling channel and the fourth cooling channel, 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 reinforcing and homogenizing mechanism, and can also avoid temperature difference, 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, a hot stamping experiment die and its using method of the present invention can optimize the cooling water channels of the hot stamping experiment die, thereby greatly reducing the manufacturing difficulty and cost of the hot stamping experiment die, and at the same time facilitating the maintenance of the cooling water channels, improving the heat dissipation efficiency of the cooling water channels, and not affecting the hot stamping experiment. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments recorded in the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0034] Figure 1 It is a first-angle perspective view of an unused state of a hot stamping experimental mold in an embodiment of the present invention;

[0035] Figure 2 It is a second-angle perspective view of an unused state of a hot stamping experimental mold in an embodiment of the present invention;

[0036] Figure 3 It is a perspective view of a stationary mold assembly in an embodiment of the present invention;

[0037] Figure 4 It is Figure 3 a schematic structural view of part A in

[0038] Figure 5 It is a sectional view of a stationary mold assembly in an embodiment of the present invention;

[0039] Figure 6 It is Figure 5 a schematic structural view of part B in

[0040] Figure 7 It is Figure 5 a schematic structural view of part C in

[0041] Figure 8 It is an exploded view of a moving mold assembly in an embodiment of the present invention;

[0042] Figure 9 It is Figure 8 a schematic structural view of part D in

[0043] Figure 10 It is a partial structural schematic view of a strengthening and homogenizing mechanism in an embodiment of the present invention;

[0044] Figure 11 It is a sectional view of an unused state of a hot stamping experimental mold in an embodiment of the present invention;

[0045] Figure 12 It is Figure 11 a schematic structural view of part E in

[0046] Figure 13 It is a front view of a used state of a hot stamping experimental mold in an embodiment of the present invention.

[0047] Main reference numeral description:

[0048] 1 - stationary mold assembly, 101 - lower fixing plate, 102 - stationary mold bottom plate, 103 - concave mold plate, 1031 - first top plate, 1032 - first cooling channel, 104 - first module, 1041 - T-shaped block, 1042 - second cooling channel, 105 - first fixing plate, 2 - moving mold assembly, 201 - upper fixing plate, 202 - moving mold bottom plate, 203 - convex mold plate, 2031 - second top plate, 204 - second module, 205 - second fixing plate, 3 - telescopic member, 301 - spring, 4 - strengthening and homogenizing mechanism, 401 - strengthening plate, 4011 - liquid distribution cavity, 4012 - liquid outlet hole, 402 - strengthening column, 4021 - through cavity, 4022 - communication hole, 403 - connecting sleeve, 404 - rotating pipe, 4041 - drain hole. Specific embodiments

[0049] In order to enable those skilled in the art to better understand the technical solutions in the present invention, the following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.

[0050] As Figures 1 to 13 shown, a hot stamping experiment mold in an embodiment of the present invention includes a stationary mold assembly 1, a moving mold assembly 2, and a plurality of telescopic members 3.

[0051] As Figures 1 to 7 shown, the stationary mold assembly 1 includes a lower fixing plate 101, and a stationary mold bottom plate 102 is installed on the lower fixing plate 101. The stationary mold bottom plate 102 is used to install the concave mold assembly. By the mutual cooperation of the concave mold assembly and the convex mold assembly, it is used for stamping experiment samples.

[0052] Among them, a concave mold assembly with replaceable local modules is installed on the stationary mold bottom plate 102. Through the replaceable module design, it is used to greatly reduce the manufacturing cost of the experiment mold. A first cooling cavity is provided in the concave mold assembly, and the first cooling cavity is the first cooling channel 1032 and the second cooling channel 1042. In this application, the first cooling cavity replaces the cooling water channel in the concave mold assembly, which can not only greatly reduce the manufacturing difficulty and cost of the concave mold assembly, but also facilitate the maintenance of the cooling water channel, and can also increase the contact area between the cooling liquid and the concave mold assembly. Furthermore, it can greatly improve the quenching and cooling efficiency of the experiment samples, will not affect the hot stamping experiment, and can also improve the experiment efficiency.

[0053] As Figures 1 to 13As shown in the figure, the female die assembly includes a female die plate 103, which is fixedly connected to the static die bottom plate 102. A first top plate 1031 is connected to the top of the female die plate 103 by bolts, and a first cooling channel 1032 is formed between the first top plate 1031 and the female die plate 103. By using the first cooling channel 1032 to replace the traditional cooling water channel, the contact area between the cooling liquid and the first top plate 1031 is larger, and thus the quenching and cooling efficiency of the cooling liquid on the first top plate 1031 and the experimental sample can be improved, and the quenching effect of the experimental sample can be enhanced.

[0054] Meanwhile, the structure of the first cooling channel 1032 formed by the female die plate 103 and the first top plate 1031 is also easy to process, and thus the manufacturing difficulty and cost of the experimental die can be reduced. In addition, if there are problems in the first cooling channel 1032, the first top plate 1031 can be separated from the female die plate 103, which is convenient for inspection and maintenance.

[0055] Wherein, first module members 104 are provided on both side walls of the female die plate 103, and the female die plate 103 and the pair of first module members 104 together constitute the female die assembly, that is Figure 3 the shape shown.

[0056] In addition, a T-shaped block 1041 is fixedly connected to the first module member 104, and a T-shaped groove matching the T-shaped block 1041 is provided on the female die plate 103. The T-shaped block 1041 is slidably disposed in the T-shaped groove. Through the mutual cooperation of the T-shaped block 1041 and the T-shaped groove on the first module member 104, modular replacement of the first module member 104 can be realized, and thus the cost of remanufacturing the experimental die can be saved.

[0057] Specifically, a second cooling channel 1042 is provided in the first module member 104. By using the second cooling channel 1042 to replace the traditional cooling water channel, the contact area between the cooling liquid and the first module member 104 is larger, and thus the cooling efficiency of the cooling liquid on the first module member 104 and the experimental sample can be improved, and the quenching effect of the experimental sample can be enhanced.

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

[0059] As Figures 1 to 13 shown, a first liquid inlet pipe and a first liquid outlet pipe are connected to both the female die plate 103 and the pair of first module members 104. The first liquid inlet pipe and the first liquid outlet pipe are respectively disposed on both sides of the female die plate 103 and the first module member 104, so that the cooling liquid can enter the first cooling channel 1032 and / or the second cooling channel 1042, and thus the contact area between the cooling liquid and the female die plate 103 or the first module member 104 can be greatly increased, making the quenching and cooling effect of the female die plate 103 or the first module member 104 on the experimental sample better.

[0060] Among them, both the first liquid inlet pipe and the first liquid outlet pipe on the concave template 103 are communicated with the first cooling channel 1032. Both the first liquid inlet pipe and the first liquid outlet pipe on the first module 104 are communicated with the second cooling channel 1042, and the first liquid inlet pipe is arranged at the highest position of the second cooling channel 1042, and the first liquid outlet pipe is arranged at the lowest position of the second cooling channel 1042, so that the cooling liquid can flow obliquely in the second cooling channel 1042, avoiding temperature difference of the cooling liquid in the second cooling channel 1042, so as to ensure 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, so as to reduce the connection joints between the first liquid inlet pipe and the water supply pipe, and avoid the installation difficulty of the connection joints caused by interference due to too many connection joints.

[0062] Specifically, a pair of first fixing plates 105 are symmetrically connected between the concave template 103 and a pair of first modules 104 through bolts. The first fixing plates 105 are used to fix the concave template 103 and the first modules 104, ensuring the assembly firmness of the concave template 103 and the first modules 104, so as to perform a stamping experiment on the experimental sample.

[0063] In addition, the first liquid inlet pipe and the first liquid outlet pipe on the concave template 103 and the first module 104 penetrate through the first fixing plate 105, which is convenient for injecting the cooling liquid into the first cooling channel 1032 and the second cooling channel 1042. At the same time, the first liquid inlet pipe and the first liquid outlet pipe passing through the first fixing plate 105 can also play a role in positioning the first fixing plate 105, which is convenient for fixing the concave template 103 and a pair of first modules 104 by using bolts and the first fixing plate 105.

[0064] As Figures 1 to 13 shown, the moving die assembly 2 is arranged on the upper side of the stationary die assembly 1. Through the mutual cooperation of the moving die assembly 2 and the stationary die assembly 1, it is used to perform a stamping experiment on the experimental sample.

[0065] Among them, the moving die assembly 2 includes an upper fixing plate 201. A cylinder is installed on the upper end surface of the upper fixing plate 201. The cylinder can be used to control the moving die assembly 2 to move along the telescopic member 3, so as to complete the stamping experiment of the experimental sample. A moving die bottom plate 202 is installed on the lower bottom surface of the upper fixing plate 201. A punch assembly with locally replaceable modules is installed on the moving die bottom plate 202. The punch assembly can be embedded into the die assembly. The punch assembly corresponds to the die assembly and is replaced synchronously, so that the punch assembly can be embedded into the die assembly to complete the stamping experiment of the experimental sample. At the same time, through the replaceable module design, the manufacturing cost of the experimental mold is greatly reduced.

[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. By replacing the cooling water channel in the punch assembly with the second cooling cavity, the present application can not only greatly reduce the manufacturing difficulty and cost of the punch assembly, but also facilitate the maintenance of the cooling water channel in the punch assembly. It 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 improving the experimental efficiency.

[0067] As Figures 1 to 13 shown, the punch assembly includes a punch plate 203, and the punch plate 203 is fixedly connected to the moving die bottom plate 202. A second top plate 2031 is connected to the bottom of the punch plate 203 by bolts, and 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, and the cooling liquid in the third cooling channel can be used to quench and cool the experimental sample.

[0068] Wherein, a second module 204 is slidably connected to both side walls of the punch plate 203. The connection method of the second module 204 is the same as that of the first module 104, and the replacement of the second module 204 can be realized. The punch plate 203 and the second module 204 constitute the punch assembly, and the experimental sample can be punched through the mutual cooperation of the punch assembly and the die assembly.

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

[0070] Preferably, the concave die plate 103, the first module 104, the punch plate 203 and the second module 204 are all made of the same material, which is H13 steel, and both the first module 104 and the second module 204 are made by forging process, so as to complete the preparation of the second cooling channel 1042 and the fourth cooling channel. Compared with making multiple cooling water channels on the first module 104 or the second module 204, the preparation cost of the second cooling channel 1042 and the fourth cooling channel in the present application is lower and the difficulty is smaller.

[0071] As Figures 1 to 13 shown, a second liquid inlet pipe and a second liquid outlet pipe are connected to both the punch plate 203 and a pair of second modules 204. The second liquid inlet pipe and the second liquid outlet pipe are respectively arranged on both sides of the punch plate 203 and the second module 204, so that the cooling liquid can enter the third cooling channel and / or the fourth cooling channel, thereby greatly increasing the contact area between the cooling liquid and the punch plate 203 or the second module 204, and making the quenching and cooling effect of the punch plate 203 or the second module 204 on the experimental sample better.

[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 channel, and the second liquid inlet pipe and the second liquid outlet pipe on the second module 204 are both connected to the fourth cooling channel. Moreover, the second liquid inlet pipe is arranged at the highest position of the fourth cooling channel, and the second liquid outlet pipe is arranged at the lowest position of the fourth cooling channel, so that the cooling liquid can flow obliquely in the fourth cooling channel, avoiding temperature difference of the cooling liquid in the fourth cooling channel, to ensure the cooling effect of the cooling liquid in the fourth cooling channel on the experimental sample.

[0073] In addition, electromagnetic proportional valves are installed on both the first liquid inlet pipe and the second liquid inlet pipe, which are used to control the flow rate of the cooling liquid entering the first cooling channel 1032, the second cooling channel 1042, the third cooling channel or the fourth cooling channel. That is, the greater the flow rate of the cooling liquid, the faster the cooling rate, 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 cool the experimental sample synchronously, avoiding the problem of uneven quenching cooling of the experimental sample, and further ensuring the quenching cooling effect of the experimental sample.

[0074] Specifically, a number of temperature measurement point holes are provided on the surfaces of the concave template 103, the first module 104, the convex template 203 and the second module 204, and the number of the temperature measurement point holes is not less than 2. Temperature sensors are installed in the temperature measurement point holes, and the surface temperature of the experimental sample can be monitored by using the temperature sensors.

[0075] If the temperature sensors detect a temperature difference on the surface of the experimental sample, the electromagnetic proportional valve on the liquid inlet pipe connected to the cooling channel in the higher temperature area will be adjusted in time, so that the flow rate of the cooling liquid entering this area increases, and further the quenching cooling efficiency of this area on the experimental sample can be accelerated, that is, the temperature control of different areas of the experimental sample can be carried out.

[0076] When the temperature sensors detect that there is no temperature difference on the surface of the experimental sample, the electromagnetic proportional valve will be adjusted so that the flow rates of the cooling liquid entering different cooling channels are the same, and the quenching cooling of the experimental sample will continue.

[0077] In addition, a pair of second fixing plates 205 are symmetrically connected between the convex template 203 and a pair of second modular components 204 by bolts. The second fixing plates 205 are used to fix the convex template 203 and the second modular components 204, ensuring the firmness of the assembly of the convex template 203 and the second modular components 204, so as to perform a stamping experiment on the experimental sample. The second liquid inlet pipes and the second liquid outlet pipes on the convex template 203 and the second modular components 204 penetrate through the second fixing plates 205, facilitating the injection of cooling liquid into the third cooling channel and the fourth cooling channel. At the same time, the second liquid inlet pipes and the second liquid outlet pipes passing through the second fixing plates 205 can also play a role in positioning the second fixing plates 205, facilitating the fixing of the convex template 203 and a pair of second modular components 204 by bolts and the second fixing plates 205.

[0078] As Figure 1 shown, a plurality of telescopic members 3 are respectively connected between the lower fixing plate 101 and the upper fixing plate 201, and springs 301 are arranged outside the telescopic members 3. The telescopic members 3 and the springs 301 are used to connect the static mold assembly 1 and the moving mold assembly 2, and at the same time are used to guide the movement of the moving mold assembly 2, so as to complete the stamping experiment on the experimental sample.

[0079] As Figures 1 to 13 shown, strengthening and homogenizing mechanisms 4 are installed in both the first cooling channel 1032 and the third cooling channel. A pair of strengthening and homogenizing mechanisms 4 are respectively used to strengthen the strength of the first top plate 1031 and the second top plate 2031, avoiding depression of the first top plate 1031 and the second top plate 2031 during the stamping of the experimental sample. At the same time, the strengthening and homogenizing mechanisms 4 are also used to homogenize the cooling liquid in the first cooling channel 1032 and the third cooling channel, avoiding temperature differences in the cooling liquid, and ensuring the quenching and cooling effect of the concave template 103 and the convex template 203 on the experimental sample.

[0080] Among them, the strengthening and homogenizing mechanism 4 includes a strengthening plate 401. A liquid distribution cavity 4011 is arranged inside the strengthening plate 401. Connectors are installed on the strengthening plate 401, and the first liquid inlet pipe and the second liquid inlet pipe are respectively connected to the connectors. The cooling liquid can enter the liquid distribution cavity 4011 through the first liquid inlet pipe or the second liquid inlet pipe. During assembly, the strengthening plate 401 and the strengthening column 402 are placed in the first cooling channel 1032 or the third cooling channel, the first liquid inlet pipe or the second liquid inlet pipe is connected to the connector, and then the first top plate 1031 is connected to the concave template 103 by bolts or the second top plate 2031 is connected to the convex template 203 by bolts, which is simple and convenient to operate.

[0081] In addition, a number of liquid outlet holes 4012 are arranged on the surface of the strengthening plate 401, and the liquid distribution cavity 4011 is communicated with 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 in the first cooling channel 1032 or the third cooling channel through the liquid outlet holes 4012.

[0082] Compared with the method of directly delivering the cooling liquid into the first cooling channel 1032 or the third cooling channel, through the arrangement of the reinforcing plate 401 in this application, the cooling liquid can be more evenly dispersed during the subsequent flow process, avoiding the temperature difference of the cooling liquid in the first cooling channel 1032 or the third cooling channel, and thus the quenching and cooling effect of the concave template 103 and the convex template 203 on the experimental sample can be ensured.

[0083] Specifically, a number of uniformly distributed reinforcing columns 402 are fixedly connected to the reinforcing plate 401. The reinforcing columns 402 are coplanar with the liquid distribution cavity 4011. When the first top plate 1031 is installed on the concave template 103, the reinforcing plate 401 contacts the bottom wall of the first cooling channel 1032, and the reinforcing columns 402 contact the inner wall of the first top plate 1031, thereby playing a supporting role and avoiding the concave template 103 from being sunken when stamping the experimental sample.

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

[0085] The function of the strengthening and uniform mixing mechanism 4 in the third cooling channel is the same as above.

[0086] In addition, a through cavity 4021 is provided in the reinforcing column 402. The through cavity 4021 is communicated with the liquid distribution cavity 4011. Part of the cooling liquid in the liquid distribution cavity 4011 enters the through cavity 4021, and the cooling liquid in the through cavity 4021 can be used to accelerate the quenching and cooling efficiency of the experimental sample.

[0087] As Figures 1 to 13 shown, a connecting sleeve 403 is rotatably connected to the side wall of the reinforcing column 402. The connecting sleeve 403 is arranged on the side of the reinforcing column 402 away from the reinforcing plate 401. A number of communication holes 4022 are provided on the side wall of the reinforcing column 402. The inside of the connecting sleeve 403 is communicated 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 again.

[0088] Among them, a pair of rotating tubes 404 are fixedly connected to the connecting sleeve 403, and a plurality of liquid discharge holes 4041 are provided on the rotating tubes 404. The cooling liquid in the connecting sleeve 403 will enter the rotating tubes 404 and then be discharged through the liquid discharge holes 4041. Since the arrangement directions of the liquid discharge holes 4041 on the rotating tubes 404 are the same, when the cooling liquid is discharged through the liquid discharge holes 4041, the rotating tubes 404 can be driven to rotate around the connecting sleeve 403. By using the rotating rotating tubes 404 and the cooling liquid discharged from the liquid outlet holes 4012, the cooling liquid in the first cooling channel 1032 or the third cooling channel can be effectively mixed, avoiding temperature differences in the cooling liquid, and thus the quenching cooling effect of the experimental sample can be ensured.

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

[0090] S1. According to the experimental requirements, assemble the female die assembly and the male die assembly, that is, install a pair of first modular parts 104 on the female die plate 103 by means of a sliding connection, fix the female die plate 103 and the first modular parts 104 with bolts and the first fixing plate 105, install a pair of second modular parts 204 on the male die plate 203, and fix the male die plate 203 and the second modular parts 204 with bolts and the second fixing plate 205 to obtain Figure 1 the state shown in order to stamp the experimental sample into the shape required by the experiment;

[0091] S2. Place the experimental sample between the female die assembly and the male die assembly, and then control the male die assembly and the female die assembly to close the mold, and then the stamping and shaping of the experimental sample can be completed;

[0092] S3. In the stamping and shaping stage, inject flowing cooling liquid into the first cooling channel 1032, the second cooling channel 1042, the third cooling channel and the fourth cooling channel respectively, and use the flowing cooling liquid to quickly quench and cool both sides of the experimental sample;

[0093] S4. Since the second cooling channel 1042 and the fourth cooling channel are inclined, the cooling liquid can avoid temperature differences when flowing in the second cooling channel 1042 and the fourth cooling channel, 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, and temperature differences can also be avoided, 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 mutual cooperation of the temperature sensor and the electromagnetic proportional valve on the liquid inlet pipe, the regulation of the flow rate of the cooling liquid in the cooling cavity can be achieved. Furthermore, the zonal temperature control of the experimental sample can be realized to ensure that the experimental sample can be cooled evenly, thereby greatly improving the quenching and cooling effect of the experimental sample.

[0096] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be encompassed within the present invention. Any reference signs in the claims should not be construed as limiting the claimed invention.

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

Claims

1. A hot stamping experimental die, characterized in that, Comprising: A stationary mold assembly, the stationary mold assembly includes a lower fixing plate, a stationary mold bottom plate is installed on the lower fixing plate, a female mold assembly with replaceable local modules is installed on the stationary mold bottom plate, and a first cooling cavity is provided in the female mold assembly; A moving mold assembly, disposed on the upper side of the stationary mold assembly, the moving mold assembly includes an upper fixing plate, a moving mold bottom plate is installed on the lower bottom surface of the upper fixing plate, a male mold assembly with replaceable local modules is installed on the moving mold bottom plate, the male mold assembly can be embedded in the female mold assembly, and a second cooling cavity is provided in the male mold assembly; A plurality of telescopic members, respectively connected between the lower fixing plate and the upper fixing plate, and springs are provided outside the telescopic members.

2. The hot stamping experimental die according to claim 1, wherein The female mold assembly includes a female mold plate, the female mold plate is fixedly connected to the stationary mold bottom plate, a first top plate is connected to the top of the female mold plate by bolts, and a first cooling channel is formed between the first top plate and the female mold plate.

3. The hot stamping experimental die according to claim 2, characterized in that, Both side walls of the female mold plate are provided with first module members, a T-shaped block is fixedly connected to the first module member, a T-shaped groove matching the T-shaped block is provided on the female mold plate, the T-shaped block is slidably arranged in the T-shaped groove, and a second cooling channel is provided in the first module member.

4. The hot stamping experimental die according to claim 3, characterized in that, The female mold plate and a pair of first module members are both connected with a first liquid inlet pipe and a first liquid outlet pipe, the first liquid inlet pipe and the first liquid outlet pipe are respectively arranged on both sides of the female mold plate and the first module member, the first liquid inlet pipe and the first liquid outlet pipe on the female mold plate are both communicated with the first cooling channel, the first liquid inlet pipe and the first liquid outlet pipe on the first module member are both communicated with the second cooling channel, and the first liquid inlet pipe is arranged at the highest position of the second cooling channel, and the first liquid outlet pipe is arranged at the lowest position of the second cooling channel.

5. The hot stamping experimental die according to claim 4, wherein, A pair of first fixing plates are symmetrically connected between the female mold plate and a pair of first module members by bolts, and the first liquid inlet pipe and the first liquid outlet pipe on the female mold plate and the first module member penetrate through the first fixing plate.

6. The hot stamping experimental die according to claim 5, wherein The male mold assembly includes a male mold plate, the male mold plate is fixedly connected to the moving mold bottom plate, a second top plate is connected to the bottom of the male mold plate by bolts, and a third cooling channel is formed between the second top plate and the male mold plate.

7. The hot stamping experiment die according to claim 6, wherein Both side walls of the male mold plate are slidably connected with second module members, and a fourth cooling channel is provided in the second module members.

8. A hot stamping experimental die according to claim 7, characterized in that, The male mold plate and a pair of second module members are both connected with a second liquid inlet pipe and a second liquid outlet pipe, the second liquid inlet pipe and the second liquid outlet pipe are respectively arranged on both sides of the male mold plate and the second module member, the second liquid inlet pipe and the second liquid outlet pipe on the male mold plate are both communicated with the third cooling channel, the second liquid inlet pipe and the second liquid outlet pipe on the second module member are both communicated with the fourth cooling channel, and the second liquid inlet pipe is arranged at the highest position of the fourth cooling channel, and the second liquid outlet pipe is arranged at the lowest position of the fourth cooling channel.

9. The hot stamping experimental die according to claim 8, characterized in that, A pair of second fixing plates are symmetrically connected between the convex template and a pair of second module members through bolts. The second liquid inlet pipes and the second liquid outlet pipes on the convex template and the second module members penetrate through the second fixing plates. Reinforcing and homogenizing mechanisms are installed in both the first cooling channel and the third cooling channel. The pair of reinforcing and homogenizing mechanisms are respectively used to enhance the strength of the first top plate and the second top plate, and at the same time to homogenize the cooling liquid in the first cooling channel and the third cooling channel.

10. A method for using the hot stamping experimental die as described in claim 9, characterized in that, It includes the following steps: S1. According to the experimental requirements, assemble the concave die assembly and the convex die assembly to stamp the experimental sample into the shape required by the experiment. S2. Place the experimental sample between the concave die assembly and the convex die assembly, and control the convex die assembly and the concave die assembly to close the mold, thereby completing the stamping and shaping of the experimental sample. S3. In the stamping and shaping stage, inject flowing cooling liquid into the first cooling channel, the second cooling channel, the third cooling channel and the fourth cooling channel respectively, and use the flowing cooling liquid to quickly quench and cool the experimental sample. S4. Since the second cooling channel and the fourth cooling channel are inclined, the cooling liquid can avoid temperature difference when flowing in the second cooling channel and the fourth cooling channel, 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 reinforcing and homogenizing mechanism, and can also avoid temperature difference, 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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