High-strength steel thick plate forming die and pressing machine

Abstract

The utility model discloses a high-strength steel thick plate forming die which comprises an upper die insert and a lower die insert which are matched with each other, the upper die insert is provided with an upper forming face, the lower die insert is provided with a lower forming face matched with the upper forming face, the high-strength steel thick plate forming die further comprises a side cooling assembly and a plurality of cooling water channels, the side cooling assembly comprises an installation ring and a cylinder, the installation ring is detachably installed on the outer side wall of the lower die insert, the cylinder is fixed to the installation ring, and the installation ring and the cylinder form a cooling cavity which is open in top and surrounds the lower die insert. According to the high-strength steel thick plate forming mold and the pressing machine, the cooling cavity for containing the cooling medium is formed in the outer surface of the lower mold insert through the mounting ring and the cylinder, so that the lower mold insert can be cooled under the surrounding of the cooling medium, and is matched with the multiple cooling water channels, the cooling effect in the stretching forming process is guaranteed, and the forming quality is improved. And the problem of instability in the secondary low-temperature forming process is effectively avoided.

Description

Technical Field

[0001] The utility model relates to a high-strength steel thick plate forming die and a press, belonging to the technical field of high-strength steel thick plate forming. Background Art

[0002] High-strength thick plate generally refers to high-strength steel plate with a thickness of 3mm or greater. Due to the material properties of high-strength steel plate, such as high hardness, poor plasticity, and thick material, it is difficult to produce finished products, especially those that require stretch forming. In traditional processes, high-strength plate forming has a significant impact on mold life and is particularly prone to surface scratches, affecting product quality and production stability.

[0003] During the forming process of high-strength steel thick plates, multiple forming processes are required. Usually, the first forming process is heat treatment forming, and the second forming process is low-temperature forming. If the cooling effect of the high-strength steel thick plates cannot be guaranteed during the first heat treatment forming process, it will affect the second low-temperature forming process, resulting in instability problems during the second low-temperature forming process.

[0004] Although current high-strength steel plate molds can cool the steel plate during heat treatment forming, the cooling effect is poor and time-consuming, which affects the forming efficiency.

[0005] It can be seen that in order to avoid the instability problem during the second low-temperature forming process and ensure the forming efficiency, a high-strength steel thick plate forming mold and press are urgently needed. Utility Model Content

[0006] The purpose of the utility model is to overcome the deficiencies in the prior art and provide a high-strength steel thick plate forming die and press, in which a cooling cavity for holding a cooling medium is formed on the outer surface of the lower die insert through a mounting ring and a cylinder, so that the lower die insert can be cooled while surrounded by the cooling medium. At the same time, in conjunction with a plurality of cooling water channels, the cooling effect during the stretching forming process can be ensured, thereby effectively avoiding the problem of instability during the second low-temperature forming process.

[0007] In order to achieve the above purpose / solve the above technical problems, the present invention adopts the following technical solutions:

[0008] In a first aspect, the utility model provides a high-strength steel thick plate forming die, comprising an upper die insert and a lower die insert that cooperate with each other, wherein the upper die insert is provided with an upper forming surface, and the lower die insert is provided with a lower forming surface that matches the upper forming surface, and further comprising a side cooling assembly and a plurality of cooling water channels, wherein:

[0009] The side cooling assembly includes a mounting ring and a cylinder. The mounting ring is detachably mounted on the outer side wall of the lower mold insert. The cylinder is fixed to the mounting ring. The mounting ring and the cylinder form a cooling cavity with an open top surrounding the lower mold insert. The cooling cavity is used to contain a cooling medium.

[0010] A plurality of cooling water channels are provided near the upper forming surface and the lower forming surface.

[0011] Furthermore, the input end and the output end of the cooling water channel on the lower mold insert are located at the top end of the side surface of the lower mold insert, and the horizontal plane where the input end and the output end are located is higher than the horizontal plane where the top side surface of the cylinder is located.

[0012] Furthermore, it also includes a circulation input pipe and a circulation output pipe, wherein the circulation input pipe is connected to one side of the cylinder, and the circulation output pipe is connected to the other side of the cylinder.

[0013] Furthermore, it also includes a threaded tube and a support ring, wherein the threaded tube is fixed to the outer surface of the lower mold insert, the outer surface of the threaded tube is provided with an external thread, and the mounting ring is threadedly connected to the threaded tube;

[0014] The support ring is fixed to the outer bottom end of the support ring, the distance between the upper surface of the support ring and the upper surface of the threaded tube is equal to the thickness of the mounting ring, and the diameter of the support ring is consistent with the diameter of the mounting ring.

[0015] Furthermore, it also includes a sealing ring, which is installed on the supporting ring.

[0016] In a second aspect, the utility model provides a press, comprising a base, a mounting frame, an upper die, a lower die, and the high-strength steel thick plate forming die according to the first aspect, wherein the upper die insert of the high-strength steel thick plate forming die is mounted on the upper die, and the lower die insert is mounted on the lower die;

[0017] The lower die and the mounting frame are both mounted on a base, the mounting frame is used to mount the upper die, and the upper die and the lower die are cooperatively arranged;

[0018] A support platform is provided on a side of the lower die away from the mounting frame, and the support platform is used to support the steel thick plate to be formed.

[0019] Furthermore, it also includes a fixing component, which is installed on the supporting platform and is used to fix the steel thick plate to be formed.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] The high-strength steel thick plate forming die provided by the utility model forms a cooling cavity for holding a cooling medium on the outer surface of the lower die insert through a mounting ring and a cylinder, so that the lower die insert can be cooled while surrounded by the cooling medium. At the same time, in conjunction with multiple cooling water channels, the cooling effect during the stretching forming process can be ensured, thereby effectively avoiding the problem of instability during the second low-temperature forming process.

[0022] The press provided by the utility model, by being adapted to the above-mentioned high-strength steel thick plate forming die, can ensure the cooling effect during the forming of the steel thick plate, and is supplemented by a fixing assembly to assist in fixing the steel thick plate, so as to effectively ensure the forming effect of the steel thick plate, thereby avoiding the problem of instability during the second low-temperature forming process of the steel thick plate; BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic structural diagram of a high-strength steel thick plate forming die provided in Example 1;

[0024] Figure 2 yes Figure 1 Schematic diagram of the structure of the middle and lower mold inserts without the mounting ring and cylinder installed;

[0025] Figure 3 It is a structural diagram of the press provided in Example 3.

[0026] In the figure: 1. Upper mold insert; 2. Lower mold insert; 3. Cooling water channel; 4. Mounting ring; 5. Cylinder; 6. Circulation inlet pipe; 7. Circulation output pipe; 8. Threaded pipe; 9. Support ring; 10. Sealing ring; 11. Base; 12. Mounting frame; 13. Upper mold; 14. Lower mold; 15. Support platform. DETAILED DESCRIPTION

[0027] The present invention will be further described below in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention and are not intended to limit the scope of protection of the present invention.

[0028] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0029] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances. Example

[0030] like Figure 1 As shown, this embodiment provides a high-strength steel thick plate forming die, comprising an upper die insert 1 and a lower die insert 2 that cooperate with each other, wherein the upper die insert 1 is provided with an upper forming surface, and the lower die insert 2 is provided with a lower forming surface that matches the upper forming surface. It is characterized in that it also includes a side cooling assembly and a plurality of cooling water channels 3, wherein,

[0031] The side cooling assembly includes a mounting ring 4 and a barrel 5. The mounting ring 4 is detachably mounted on the outer wall of the lower mold insert 2. The barrel 5 is fixed to the mounting ring 4. The mounting ring 4 and the barrel 5 form a cooling cavity with an open top surrounding the lower mold insert 2. The cooling cavity is used to contain a cooling medium.

[0032] A plurality of cooling water channels 3 are provided near the upper forming surface and the lower forming surface.

[0033] In the above technical solution, a cooling cavity for holding a cooling medium is formed on the outer surface of the lower mold insert 2 by the mounting ring 4 and the cylinder 5, so that the lower mold insert 2 can be cooled while surrounded by the cooling medium. At the same time, in conjunction with the multiple cooling water channels 3, the cooling effect during the stretch forming process can be ensured, thereby effectively avoiding the problem of instability during the second low-temperature forming process.

[0034] At the same time, the detachable connection between the mounting ring 4 and the lower mold insert 2 facilitates subsequent adjustment of the lower mold insert 2 and selection of a cylinder 5 with a suitable wall thickness, thereby adapting to cooling requirements in different situations. Example

[0035] like Figure 1 and Figure 2 As shown, the high-strength steel thick plate forming die provided in this embodiment is different from the high-strength steel thick plate forming die provided in Example 1 in that:

[0036] In order to avoid the problem of mutual interference between the cooling water channel 3 on the lower mold insert 2 and the cylinder 5, the input end and the output end of the cooling water channel 3 on the lower mold insert 2 are located at the top end of the side of the lower mold insert 2, and the horizontal plane where the input end and the output end are located is higher than the horizontal plane where the top side of the cylinder 5 is located.

[0037] In order to connect the cylinder 1 to the external cooling medium, a circulation input pipe 6 and a circulation output pipe 7 are also included. The circulation input pipe 6 is connected to one side of the cylinder 5, and the circulation output pipe 7 is connected to the other side of the cylinder 5.

[0038] In order to achieve a detachable connection between the mounting ring 4 and the barrel 5 and the lower mold insert 2, a threaded tube 8 and a support ring 9 are also included. The threaded tube 8 is fixed to the outer surface of the lower mold insert 2. The outer surface of the threaded tube 8 is provided with an external thread. The mounting ring 4 is threadedly connected to the threaded tube 8.

[0039] The support ring 9 is fixed at the outer bottom end of the support ring 9 , the distance between the upper surface of the support ring 9 and the upper surface of the threaded tube 8 is equal to the thickness of the mounting ring 4 , and the diameter of the support ring 9 is consistent with the diameter of the mounting ring 4 .

[0040] In order to ensure the sealing of the connection between the support ring 9 and the mounting ring 4 , a sealing ring 10 is further included, and the sealing ring 10 is mounted on the support ring 9 . Example

[0041] like Figure 3 As shown, a press provided in this embodiment includes a base 11, a mounting frame 12, an upper die 13, a lower die 14, and the high-strength steel thick plate forming die described in Example 1. The upper die insert 1 of the high-strength steel thick plate forming die is installed on the upper die 13, and the lower die insert 2 is installed on the lower die 14;

[0042] The lower die 14 and the mounting frame 12 are both mounted on the base 11. The mounting frame 12 is used to mount the upper die 13. The upper die 13 and the lower die 14 are cooperatively arranged.

[0043] A support platform 15 is provided on a side of the lower die 14 away from the mounting frame 12 , and the support platform 15 is used to support the steel plate to be formed.

[0044] In order to fix the thick steel plate to be formed to ensure stability during forming, a fixing component is also included. The fixing component is installed on the support platform 15 and is used to fix the thick steel plate to be formed. In this embodiment, the fixing component includes a clamp, which is driven by a cylinder to clamp and fix the steel plate in the front and rear directions.

[0045] The press provided in this embodiment can ensure the cooling effect during the forming of the steel thick plate by adapting the high-strength steel thick plate forming mold provided in Example 1, and is assisted by a fixing component to assist in fixing the steel thick plate to effectively ensure the forming effect of the steel thick plate, thereby avoiding the problem of instability during the second low-temperature forming process of the steel thick plate. Example

[0046] This embodiment provides a method for forming a high-strength steel thick plate, based on the press described in the third embodiment, comprising:

[0047] heating the steel plate to be formed to an austenitizing temperature to obtain the steel plate in a first state;

[0048] Pre-cooling the first-state steel plate, and obtaining the second-state steel plate when the first-state steel plate is cooled to a temperature at the surface and the core that is higher than the austenite transformation temperature;

[0049] The formed end of the second-state steel plate is placed on the forming surface of the lower mold insert 2, and the other end of the steel plate is fixed by a fixing assembly. The upper mold 13 of the press drives the upper mold insert 1 to close the mold, and the second-state steel plate is subjected to press quenching treatment through the cooling cavity and cooling water channel 3. During the press quenching treatment process, the cooling medium in the cooling cavity and cooling water channel 3 is kept circulating;

[0050] When the preset press-forming quenching treatment time is reached, the press drives the upper die insert 1 to reset, and the formed steel thick plate is obtained.

[0051] To sum up, the forming method of high-strength steel thick plates provided in this embodiment is adapted to the press described in Example 3. When the second-state steel thick plates are subjected to press-forming and quenching treatment, the cooling medium in the cooling chamber and the cooling water channel 3 is kept circulating to circulate and cool the second-state steel thick plates, thereby effectively ensuring the cooling effect of the steel thick plates, thereby avoiding the problem of instability during the second low-temperature forming process of the steel thick plates.

[0052] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A high-strength steel thick plate forming die, comprising an upper die insert (1) and a lower die insert (2) that cooperate with each other, wherein the upper die insert (1) is provided with an upper forming surface, and the lower die insert (2) is provided with a lower forming surface that matches the upper forming surface, characterized in that: It also includes a side cooling assembly and a plurality of cooling water channels (3), wherein: The side cooling assembly comprises a mounting ring (4) and a cylinder (5), wherein the mounting ring (4) is detachably mounted on the outer side wall of the lower mold insert (2), and the cylinder (5) is fixed on the mounting ring (4), and the mounting ring (4) and the cylinder (5) form a cooling cavity with an open top and surrounding the lower mold insert (2), and the cooling cavity is used to contain a cooling medium; A plurality of cooling water channels (3) are arranged near the upper forming surface and the lower forming surface.

2. The high-strength steel thick plate forming die according to claim 1, characterized in that: The input end and the output end of the cooling water channel (3) on the lower mold insert (2) are located at the top end of the side of the lower mold insert (2), and the horizontal planes where the input end and the output end are located are higher than the horizontal plane where the top side of the cylinder (5) is located.

3. The high-strength steel thick plate forming die according to claim 1, characterized in that: It also includes a circulation input pipe (6) and a circulation output pipe (7), wherein the circulation input pipe (6) is connected to one side of the cylinder (5), and the circulation output pipe (7) is connected to the other side of the cylinder (5).

4. The high-strength steel thick plate forming die according to claim 1, characterized in that: It also includes a threaded tube (8) and a support ring (9), wherein the threaded tube (8) is fixed to the outer surface of the lower mold insert (2), the outer surface of the threaded tube (8) is provided with an external thread, and the mounting ring (4) is threadedly connected to the threaded tube (8); The support ring (9) is fixed to the outer bottom end of the support ring (9), the distance between the upper surface of the support ring (9) and the upper surface of the threaded tube (8) is equal to the thickness of the mounting ring (4), and the diameter of the support ring (9) is consistent with the diameter of the mounting ring (4).

5. The high-strength steel thick plate forming die according to claim 4, characterized in that: It also includes a sealing ring (10), which is mounted on the support ring (9).

6. A press, characterized in that: It comprises a base (11), a mounting frame (12), an upper die (13), a lower die (14) and a high-strength steel thick plate forming die according to any one of claims 1 to 5, wherein the upper die insert (1) of the high-strength steel thick plate forming die is mounted on the upper die (13), and the lower die insert (2) is mounted on the lower die (14); The lower mold (14) and the mounting frame (12) are both mounted on the base (11); the mounting frame (12) is used to mount the upper mold (13); and the upper mold (13) and the lower mold (14) are arranged in a coordinated manner; A support platform (15) is provided on a side of the lower die (14) away from the mounting frame (12), and the support platform (15) is used to support the steel thick plate to be formed.

7. The press according to claim 6, characterized in that It also includes a fixing assembly, which is installed on the supporting platform (15) and is used to fix the steel thick plate to be formed.

8. The press according to claim 7, characterized in that The fixing assembly includes a clamp.

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