Material pressing core of thermal forming die

Abstract

The utility model relates to the technical field of thermal forming dies, in particular to a thermal forming die material pressing core which comprises a material pressing core body, a cooling channel is arranged in the material pressing core body, the cooling channel is provided with an air outlet end and an air inlet end, an air outlet hole is formed in the material pressing core body, and the air outlet hole communicates with the air outlet end of the cooling channel; and the air inlet pipe communicates with the air inlet end of the cooling channel and is used for introducing cooling aerial fog into the cooling channel. The cooling device has the advantages that the cooling effect on the material pressing core is guaranteed, and meanwhile the design difficulty of the material pressing core is reduced.

Description

Technical Field

[0001] The present application relates to the technical field of hot forming dies, and in particular to a blank holder core for a hot forming die. Background Art

[0002] In a hot forming die, to ensure forming stability, a blank holder core needs to be arranged; the blank holder cores with different product shapes and at different positions are of different sizes due to forming requirements. The material properties of hot formed products largely depend on the cooling of the formed products, that is, the flow rate and velocity of stable cooling water in the steel block. Good cooling can ensure that the product performance is within the qualified range; cooling water also needs to be arranged in the blank holder core area to ensure the cooling effect of the product.

[0003] Currently, in the prior art, a cooling channel is arranged inside the blank holder core. The cooling channel has a water inlet end and a water outlet end. An inlet pipe and an outlet pipe are arranged outside the blank holder core. The inlet pipe is communicated with the water inlet end of the cooling channel, and the outlet pipe is communicated with the water outlet end of the cooling channel. Cooling water flows into the cooling channel through the water inlet end to cool the blank holder core, and flows out from the water outlet channel for reflux.

[0004] For the above related technology, the disassembly and assembly of the inlet pipe and the outlet pipe need to be assisted by an open-end wrench. When designing, the rotation space of the open-end wrench needs to be considered, so the design difficulty is relatively large and the occupied space is relatively high. Utility Model Content

[0005] The purpose of the present application is to provide a blank holder core for a hot forming die, which reduces the design difficulty of the blank holder core while ensuring the cooling effect on the blank holder core.

[0006] A blank holder core for a hot forming die provided by the present application adopts the following technical solution:

[0007] A blank holder core for a hot forming die, comprising:

[0008] A blank holder core body, inside which a cooling channel is arranged. The cooling channel has an air outlet end and an air inlet end. An air outlet hole is opened on the blank holder core body, and the air outlet hole is communicated with the air outlet end of the cooling channel;

[0009] An inlet pipe, which is communicated with the air inlet end of the cooling channel and is used for introducing cooling aerosol into the cooling channel.

[0010] When water cooling is adopted to cool the blank holder core, firstly, a return channel needs to be arranged inside the blank holder core. Since it is necessary to ensure the return of the water cooling liquid, and the internal space of the blank holder core is not affluent, the space for locking screws and positioning needs to be considered, and a cooling water flow circuit also needs to be formed inside. The design difficulty is relatively large. Secondly, the blank holder core contacts the blank sheet earlier than the adjacent steel block, that is, it participates in the cooling of the product earlier than the non-blank holder core area, which is not conducive to the balance of product cooling and has a certain impact on product performance. Thirdly, for the disassembly and assembly of the water inlet pipe and the water outlet pipe, an open-ended wrench is required for assistance. The rotation space of the open-ended wrench needs to be considered during design; at the same time, the water joint and the water inlet and outlet pipes will move up and down with the blank holder base 2 during the stamping process. If there is not enough safety space, the water inlet and outlet pipes may be damaged and leak due to long-term friction with the casting during the stamping process, or the thread of the water joint may become loose due to long-term friction, resulting in water leakage at the water joint. Fourthly, since the water joint and the water pipe cannot be blocked during the movement process, sufficient safety avoidance needs to be made for the nearby casting. When the stroke of the blank holder core is relatively large, the existence of this avoidance will affect the strength of the casting, thus affecting production stability;

[0011] By adopting the above technical solution, the die-casting core is cooled by using cooling aerosol. Only the air inlet pipe needs to be arranged, and there is no need to arrange an air outlet pipe. Only air outlet holes need to be opened on the die-casting core. Therefore, there is no need to arrange a return channel inside the die-casting core, and only one cooling channel needs to be arranged, occupying less internal space. And there is no need to arrange an air outlet pipeline, so there is no need to consider the occupied space of the air outlet pipeline, and the overall space occupation is less. And the cooling effect of the cooling aerosol is slightly weaker than that of the cooling water. After using air cooling, the premature cooling caused by the small blank holder core contacting the blank sheet in advance is slowed down, which is beneficial to the balance of product performance. The installation of the air pipe does not require the assistance of equipment, and the air joint can be manually inserted, greatly reducing the requirement for the die space.

[0012] Optionally, the air outlet holes are opened on both the front and the back of the blank holder core body.

[0013] By adopting the above technical solution, air outlet holes are opened on both the front and the back of the blank holder core. When the flow rate of the cooling aerosol is relatively large, the normal discharge of the cooling aerosol is ensured.

[0014] Optionally, the air outlet holes are opened on both side walls of the blank holder core body.

[0015] By adopting the above technical solution, air outlet holes are opened on both side walls of the blank holder core. When the flow rate of the cooling aerosol is relatively large, the normal discharge of the cooling aerosol is ensured.

[0016] Optionally, the number of the air outlet holes on the front, the back and both side walls of the blank holder core body is set to be several.

[0017] By adopting the above technical solution, the degree of freedom of setting the air outlet is high, and it can be arranged arbitrarily according to the shape of the blank holder; the design of the blank holder will thus become simple.

[0018] Optionally, it further includes a blank holder base, and a connection channel is arranged inside the blank holder base. One end of the connection channel is communicated with the cooling channel, and the other end of the connection channel is communicated with the air inlet pipe.

[0019] By adopting the above technical solution, through the setting of the blank holder base, stable support is provided for the blank holder body. By setting the connection channel, smooth transmission of the cooling aerosol from the air inlet pipe to the cooling channel is realized, providing a strong guarantee for efficient cooling.

[0020] Optionally, an air joint is arranged between the blank holder body and the air inlet pipe. The air joint is fixedly connected to the air inlet pipe, and the blank holder body is detachably connected to the air joint. The air inlet pipe is communicated with the cooling channel through the air joint.

[0021] By adopting the above technical solution, the existence of the air joint realizes the detachable connection between the blank holder body and the air inlet pipe. This connection method not only facilitates the installation and disassembly operations, but also greatly simplifies the daily maintenance and servicing work.

[0022] Optionally, the air joint is inserted into the blank holder body.

[0023] By adopting the above technical solution, this connection method is both firm and reliable, which can effectively ensure the stable transmission of the cooling aerosol, and the insertion method is convenient and rapid to install, facilitating use.

[0024] Optionally, it further includes a bottom block, a fixing plate and a nitrogen cylinder. The bottom block is fixedly connected to the blank holder base. One end of the nitrogen cylinder is fixedly connected to the fixing plate, the other end of the nitrogen cylinder is fixedly connected to the blank holder base, and the bottom block can abut against the fixing plate.

[0025] By adopting the above technical solution, the bottom block is fixedly connected to the blank holder base, providing stable support for the entire blank holder structure. At the same time, the setting of the nitrogen cylinder further enhances the working stability and accuracy of the blank holder.

[0026] In summary, the present application includes at least one of the following beneficial technical effects:

[0027] 1. The die-casting core is cooled by means of a cooling aerosol. Only an air inlet pipe needs to be provided, and there is no need to set up an air outlet pipe. An air outlet hole can be opened on the die-casting core. Therefore, there is no need to set up a reflux channel inside the die-casting core. Only one cooling channel needs to be set up, occupying less internal space. And since there is no need to set up an air outlet pipe, there is no need to consider the space occupied by the air outlet pipe, resulting in less overall space occupation. Moreover, the cooling effect of the cooling aerosol is slightly weaker than that of the cooling water. After using air cooling, the premature cooling caused by the small pressure core contacting the blank sheet in advance is slowed down, which is beneficial to the balance of product performance. The installation of the air pipe does not require the assistance of equipment, and the air joint can be manually inserted, greatly reducing the requirement for the die space;

[0028] 2. The degree of freedom for setting the air outlet is high, and it can be arranged arbitrarily according to the shape of the pressure core; the design of the pressure core will thus become simple;

[0029] 3. The existence of the air joint realizes the detachable connection between the pressure core body and the air inlet pipe. This connection method not only facilitates the installation and disassembly operations, but also greatly simplifies the daily maintenance and servicing work. Description of the Drawings

[0030] Figure 1 is the overall structural schematic diagram of a pressure core of a hot forming die in an embodiment of the present application.

[0031] Figure 2 is the perspective structural schematic diagram of the pressure core body in an embodiment of the present application.

[0032] In the figure, 1, pressure core body; 11, cooling channel; 12, air outlet hole; 2, air inlet pipe; 3, pressure core base; 4, air joint; 5, bottom block; 6, fixing plate; 7, nitrogen cylinder; 8, product. Detailed Description of the Embodiment

[0033] The following will be combined with the attached Figure 1 - attached Figure 2 , and a further detailed description of the present application will be given.

[0034] Referring to Figure 1 and Figure 2 , this embodiment discloses the complete structure and working principle of a pressure core of a hot forming die. This pressure core can not only efficiently and uniformly cool the die to ensure the quality and production efficiency of the product 8 during the hot forming process, but also achieve the structural stability and usage convenience through reasonable design.

[0035] First, the main component parts of the blank holder of the thermoforming die will be introduced in detail. It includes key components such as the blank holder body 1, the intake pipe 2, the blank holder base 3, the air joint 4, the bottom block 5, the fixing plate 6, and the nitrogen cylinder 7. The blank holder body 1, as the core of the entire structure, is carefully provided with a cooling channel 11 inside. The cooling channel 11 has an air outlet end and an air inlet end, which is the main path for the cooling aerosol to flow. The cooling aerosol flows from the air inlet end to the air outlet end, enabling the cooling aerosol to cool the blank holder. On the blank holder body 1, air outlet holes 12 are specially opened, and these air outlet holes 12 are closely connected to the air outlet end of the cooling channel 11 to ensure that the cooling aerosol can smoothly spray out from the air outlet holes 12, realizing timely and efficient cooling of the die.

[0036] Furthermore, by adjusting the spraying speed and gas spraying temperature of the cooling aerosol, the required cooling effect can be adjusted.

[0037] The intake pipe 2, as a component connected to the air inlet end of the cooling channel 11, its main function is to introduce the cooling aerosol into the cooling channel 11. Through the intake pipe 2, the operator can conveniently adjust and control the flow rate and pressure of the cooling aerosol, thus flexibly meeting different production requirements. This design not only improves the controllability of the cooling effect but also further enhances the practicality of the entire blank holder.

[0038] In addition to the blank holder body 1 and the intake pipe 2, the blank holder base 3 is also an indispensable part. The upper end of the blank holder abuts against the product 8, and the lower end is fixedly connected to the blank holder base 3. A connecting channel is provided inside the blank holder base 3. One end of the connecting channel is connected to the cooling channel 11, and the other end is connected to the intake pipe 2. This design cleverly realizes the smooth transmission of the cooling aerosol from the intake pipe 2 to the cooling channel 11, providing a strong guarantee for efficient cooling.

[0039] Between the blank holder body 1 and the intake pipe 2, the above-mentioned air joint 4 is also provided. The existence of the air joint 4 realizes the detachable connection between the blank holder body 1 and the intake pipe 2. This connection method is not only convenient for installation and disassembly operations but also greatly simplifies the daily maintenance and servicing work. In addition, the connection method between the air joint 4 and the blank holder body 1 is preferably a plug-in connection, which is both firm and reliable and can effectively ensure the stable transmission of the cooling aerosol.

[0040] The bottom block 5 is fixedly connected to the blank holder base 3, providing stable support for the entire blank holder structure. At the same time, the setting of the nitrogen cylinder 7 further enhances the working stability and accuracy of the blank holder. One end of the nitrogen cylinder 7 is fixedly connected to the fixing plate 6, and the other end is fixedly connected to the blank holder base 3. When the nitrogen cylinder 7 works, it can achieve precise control and stable support of the blank holder through the abutment between the bottom block 5 and the fixing plate 6, thus ensuring the smooth progress of the blanking process.

[0041] Regarding the working principle of the blank holder, it can be described in detail as follows: During the hot forming process, first, cooling aerosol is introduced into the blank holder through the air inlet pipe 2. Under the guidance of the connection channels of the blank holder base 3, these cooling aerosols smoothly enter the cooling channels 11 of the blank holder body 1. Subsequently, the cooling aerosols are evenly ejected from the air outlet holes 12 to perform a full - range cooling treatment on the mold. At the same time, the nitrogen cylinder 7 starts to work, and the force generated by it is transmitted to the blank holder through the abutting action between the bottom block 5 and the fixed plate 6, enabling the blank holder to perform the blank holding operation stably and precisely.

[0042] It is worth mentioning that in the design of the blank holder body 1, a full - range air outlet hole 12 setting method is adopted. Specifically, air outlet holes 12 are opened on the front, back, and two side walls of the blank holder body 1. This design enables the cooling aerosols to be ejected simultaneously from multiple directions, forming a full - range cooling environment. This full - range cooling method not only improves the cooling uniformity and efficiency but also ensures that every part of the mold can be fully cooled.

[0043] In addition, to meet different cooling requirements, the number of air outlet holes 12 can also be adjusted. We can set a number of air outlet holes 12 on the front, back, and two side walls of the blank holder according to actual needs. This flexible design method enables us to more precisely control the distribution of the cooling aerosols, thereby further enhancing the cooling effect and the quality of the product 8.

[0044] In summary, the blank holder of the hot forming mold disclosed in this embodiment achieves efficient and uniform cooling effects as well as stable and precise blank holding operations through reasonable design and ingenious structure. This design not only improves the quality of the product 8 and production efficiency but also provides new ideas and directions for the development of the hot forming process. We believe that with the continuous progress of technology and the continuous expansion of application fields, this blank holder structure will play a more important role in the future.

[0045] The embodiments of this specific implementation manner are all preferred embodiments of this application, and do not limit the protection scope of this application accordingly. The same components are denoted by the same reference numerals. Therefore, all equivalent changes made according to the structure, shape, and principle of this application should be covered within the protection scope of this application.

Claims

1. A thermoforming die core, characterized in that: include: A pressing core body (1), wherein a cooling channel (11) is arranged inside the pressing core body (1), the cooling channel (11) has an air outlet end and an air inlet end, and an air outlet hole (12) is opened on the pressing core body (1), and the air outlet hole (12) is connected to the air outlet end of the cooling channel (11); An air inlet pipe (2) is communicated with an air inlet end of the cooling channel (11) and is used to introduce cooling mist into the cooling channel (11).

2. A hot forming die pressing core according to claim 1, characterized in that: The air outlet holes (12) are provided on the front and back sides of the pressing core body (1).

3. A hot forming die pressing core according to claim 2, characterized in that: The air outlet holes (12) are provided on both side walls of the pressing core body (1).

4. A hot forming die pressing core according to claim 3, characterized in that: The number of the air outlet holes (12) on the front side, the back side and the two side walls of the pressing core body (1) is set to be multiple.

5. The hot forming die pressing core according to claim 1, characterized in that: It also comprises a pressing core base (3), wherein a connecting channel is provided inside the pressing core base (3), one end of the connecting channel is in communication with the cooling channel (11), and the other end of the connecting channel is in communication with the air intake pipe (2).

6. A hot forming die pressing core according to claim 5, characterized in that: An air joint (4) is provided between the pressing core body (1) and the air intake pipe (2); the air joint (4) is fixedly connected to the air intake pipe (2); the pressing core body (1) and the air joint (4) are detachably connected; and the air intake pipe (2) is connected to the cooling channel (11) via the air joint (4).

7. The hot forming die pressing core according to claim 6, characterized in that: The air joint (4) is plugged into the pressing core body (1).

8. The hot forming die pressing core according to claim 5, characterized in that: It also comprises a bottom block (5), a fixed plate (6) and a nitrogen cylinder (7), wherein the bottom block (5) is fixedly connected to the pressing core base (3), one end of the nitrogen cylinder (7) is fixedly connected to the fixed plate (6), and the other end of the nitrogen cylinder (7) is fixedly connected to the pressing core base (3), and the bottom block (5) can abut against the fixed plate (6).

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