Plate forming equipment

Abstract

The utility model relates to the technical field of galvanized sheet processing, in particular to sheet forming equipment, which comprises an upper die, a lower die and a water bath system, the upper die comprises an upper die holder and an upper die insert arranged on the upper die holder, and the lower die comprises a lower die holder and a lower die insert arranged on the lower die holder; the water bath system comprises a water tank arranged on the lower die holder and a steam collecting device arranged on the upper die holder; when the upper die and the lower die are closed, the forming surfaces of the upper die insert and the lower die insert are positioned in the water tank; and the steam collecting device is used for discharging water steam formed above the water tank to the outside of the equipment. According to the plate forming equipment, a large amount of water vapor can be discharged through the steam collecting device, the damp condition of a machine tool of the equipment is reduced, the problems that the equipment is affected with damp and corroded due to the water vapor can be solved, and then the probability that the equipment breaks down can be reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to galvanized sheet material processing technical field, especially a sheet material forming equipment. BACKGROUND

[0002] In the field of automobile production, hot forming product is an important measure to solve the lightweight of the vehicle body, which can effectively reduce the weight of the vehicle body while ensuring the strength of the vehicle body. The current hot forming sheet material is mainly divided into three kinds of bare plate, aluminum-silicon plated layer plate and galvanized layer plate (referred to as galvanized plate). The galvanized plate can effectively improve the corrosion resistance of the product and solve the problems of aluminum-silicon coated plate point welding spatter and sharp edge rusting, so it is widely used.

[0003] In the traditional hot forming process, the sheet material with plated layer is heated directly and then kept warm to austenitization, and then moved into the die with cooling water channel for stamping operation; at the same time, the cooling water channel operates to cool the die, and the sheet material is also quenched during the forming process, which ensures the transformation rate of martensite in microcosm and the hardness requirement of the sheet material in macrocosm, but this technical solution cannot guarantee the good integrity of the plated layer of the sheet material during stamping, especially at the convex corner, which is easy to tear due to the large stamping force, affecting the corrosion resistance of the sheet material.

[0004] The existing indirect hot forming process first stamps the sheet material into an intermediate shape by using a pre-stamping die to form a pre-formed steel sheet; then the heating furnace is heated to the austenitization interval and the temperature is stable, the temperature difference between the sheet material and the furnace is not more than ±10℃, the pre-formed sheet material is put into the furnace for austenitization and heat preservation, and the oxygen content in the heating furnace is controlled to 10vol% to 40vol% during the heat preservation process; then, after the sheet material is taken out after heat preservation in the heating furnace, it is corrected and quenched; finally, the sheet material is subjected to the final die stamping and pressure holding, and the hot formed steel sheet is obtained. This method can obtain good surface oxide composition and galvanized thickness to improve color difference and effectively reduce the color difference value of the plated layer; it can improve the problems of serious color difference and uneven appearance caused by uneven distribution of surface oxide composition and cracks. However, this method needs to add a die, which increases the development cost of the die, and needs special press equipment, which has problems of high investment and low production efficiency. UTILITY MODEL CONTENTS

[0005] Therefore, the utility model aims to provide a sheet material forming equipment to improve the situation that the equipment is damp and corroded by water vapor.

[0006] To achieve the above purpose, the technical scheme of the utility model is as follows:

[0007] A plate forming device comprises an upper die, a lower die, and a water bath system, the upper die comprises an upper die base and an upper die insert arranged on the upper die base, the lower die comprises a lower die base and a lower die insert arranged on the lower die base; the water bath system comprises a water tank arranged on the lower die base, and a steam collecting device arranged on the upper die base; when the upper die and the lower die are closed, the forming surfaces of the upper die insert and the lower die insert are both located in the water tank; the steam collecting device is used to discharge the water vapor formed above the water tank to the outside of the device.

[0008] Further, the lower die base is provided with a jacking device, the jacking device has a guide column that can move up and down, and the guide column can jack up the plate located on the lower die insert.

[0009] Further, the lower die base is provided with a jacking hole, the jacking device has a mounting disc mounted in the jacking hole, and the mounting disc is provided with a guide hole that penetrates up and down; the guide column is slidingly arranged in the guide hole.

[0010] Further, a first sealing ring is arranged between the guide hole and the guide column, and / or a second sealing ring is arranged between the jacking hole and the mounting disc.

[0011] Further, the top of the guide column is formed with a top platform that protrudes outward in the radial direction of the guide column, and the mounting disc is formed with a sink groove located at the top end of the guide hole; as the guide column moves downward, the top platform is accommodated in the sink groove.

[0012] Further, the water tank is provided with a heating device for heating the water in the water tank.

[0013] Further, a magnesium alloy block is arranged in the water tank, and / or an electrification device is connected to the upper die base.

[0014] Further, the steam collecting device has a steam collecting pipeline arranged on the upper die base, and a fan arranged on the steam collecting pipeline; the water tank is provided with a circulating device, and the water vapor discharged through the steam collecting pipeline can be condensed by the circulating device and returned to the water tank.

[0015] Further, the steam collecting pipeline comprises a plurality of branch pipelines arranged at intervals on the side of the upper die base facing the water tank, and a main pipeline arranged outside the upper die base; the fan is arranged on the main pipeline, each branch pipeline is communicated with the main pipeline, and a ventilation hole is formed on each branch pipeline.

[0016] Further, a filtering unit is arranged in the circulating device, and the water passing through the circulating device is filtered by the filtering unit and returned to the water tank.

[0017] Compared with the prior art, the plate forming equipment has the following advantages:

[0018] The plate forming equipment has the following advantages: the steam collecting device is arranged in the water bath system between the upper die and the lower die, and most of the water vapor rising from the water tank can be collected and discharged by the steam collecting device in the process of stamping and forming the plate, the air circulation flow formed by the pipeline of the steam collecting device can discharge a large amount of water vapor, the moisture of the equipment machine tool is reduced, the problem of moisture and corrosion of the equipment caused by water vapor is improved, and the probability of equipment failure is reduced.

[0019] In addition, the drainage channel is arranged on the lower die insert, and the water in the closed area of the two forming surfaces can be discharged to the water tank outside the two forming surfaces through the drainage channel in the process of stamping and fitting of the upper die insert and the lower die insert, so that the problem of local water accumulation in the forming surface is avoided, and the forming quality of the plate is not affected.

[0020] In addition, the jacking device is arranged on the lower die seat, and after the stamping and forming of the plate is completed, the jacking action of the jacking device can conveniently take out the workpiece from the lower die seat. The guide cooperation structure of the mounting disc and the guide column not only facilitates the lifting action of the guide column, but also effectively guarantees the smoothness of the guide column action. By arranging the sealing ring between the guide hole of the guide column and the mounting disc, and between the jacking hole of the mounting disc and the lower die seat, the sealing property between the jacking device and the lower die seat is guaranteed, the water in the water tank is prevented from leaking out of the jacking device, and the good environmental sealing condition of the hot bath water in the water tank is guaranteed. BRIEF DESCRIPTION OF DRAWINGS

[0021] The accompanying drawings, which form a part of the present application, are used to provide a further understanding of the present application, and the schematic embodiments of the present application and the description thereof are used to explain the present application, wherein the front and back, up and down and other directional words involved in the present application only represent relative positional relationship, and do not constitute improper limitation on the present application. In the drawings:

[0022] Figure 1 The structure diagram of the lower die of the plate forming equipment according to the embodiment of the present application is shown in the figure;

[0023] Figure 2 The structure diagram of the upper die of the plate forming equipment according to the embodiment of the present application is shown in the figure;

[0024] Figure 3 The overall cross-sectional structure diagram of the plate forming equipment according to the embodiment of the present application is shown in the figure;

[0025] Figure 4 The overall cross-sectional structure diagram of the jacking device according to the embodiment of the present application is shown in the figure;

[0026] Figure 5 The overall structure schematic diagram of the steam collecting device is shown in the embodiment of the utility model.

[0027] Figure 6 The local structure schematic diagram of the steam collecting pipeline is shown in the embodiment of the utility model.

[0028] Mark explanation:

[0029] 1, upper die seat; 10, upper die insert;

[0030] 2, lower die seat; 20, lower die insert;

[0031] 3, sink; 30, mounting flange; 300, heater;

[0032] 4, steam collecting device; 40, protective cover; 41, fan; 42, steam collecting pipeline; 420, vent; 43, pipe clamp;

[0033] 5, jacking device; 50, mounting disc; 500, mounting hole; 501, sink; 51, guide column; 510, top table; 61, first sealing ring; 62, second sealing ring. Specific implementation

[0034] It should be noted that the embodiments in the utility model and the features in the embodiments can be combined with each other without conflict.

[0035] In the description of the utility model, it should be declared that if the terms such as “up, down, left, right, front, back, inside and outside” indicating the direction or position relationship appear, it is based on the direction or position relationship shown in the drawing, and it is only for the convenience of describing the utility model, and it cannot be understood as the limitation of the utility model.

[0036] In addition, in the description of the utility model, unless otherwise explicitly limited, the terms “installation”, “connection”, “connection”, “connecting piece” should be understood broadly.For example, the connection can be fixed connection, or detachable connection, or integrally connected; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through intermediate medium, or the communication inside two elements.For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood in combination with specific circumstances.In the description of the utility model, the limiting terms such as “first, second, a, b, c and d” appear, which are only for distinguishing the same features of different positions, attribution or use, to avoid ambiguity and confusion, and cannot be understood as indicating or implying relative importance.

[0037] The utility model discloses below will refer to the drawing and combine the embodiment to explain in detail.

[0038] Embodiment one

[0039] This embodiment relates to a kind of plate forming equipment, can improve the equipment due to water vapor and damp, corrosion situation;Its one exemplary structure is as shown in Figure 1 、 Figure 2 And Figure 3 As shown.

[0040] Overall, the plate forming equipment includes upper die, lower die and water bath system;Wherein, the upper die includes upper die seat 1 and the upper die insert 10 arranged on the upper die seat 1, and the lower die includes lower die seat 2 and the lower die insert 20 arranged on the lower die seat 2;Water bath system includes water tank 3 arranged on the lower die seat 2, and steam collection device 4 arranged on the upper die seat 1.When the upper die and the lower die are closed, the forming surface of the upper die insert 10 and the lower die insert 20 are all located in the water tank 3;Steam collection device 4 is used to discharge the water vapor formed above the water tank 3 to the outside of the equipment.

[0041] It should be pointed out that based on the overall design idea of the above, the technical scheme of the utility model can adopt a variety of different specific implementation structures, forms or configuration order.For example, the water tank 3 described above can be formed by welding the plate around the lower die seat 2, or can be integrally formed on the lower die seat 2;Steam collection device 4 can be arranged in the form of pipeline on the upper die seat 1, or a channel for exhaust can be integrally formed on the upper die seat 1.The specific setting order, assembly method, etc.of the upper die seat 1, the lower die seat 2, the water tank 3 and the steam collection device 4, etc.can also be flexibly adjusted.For the parts required for the overall scheme implementation but not involved in the above overall setting, reasonable and flexible design can be made by referring to the mature setting means in the field, the actual situation during implementation, etc.The specific implementation scheme described below in this embodiment is only one of the more optimal schemes formed by the above various combinations and changes, and in actual implementation, the actual situation and flexible adjustment and improvement can be made by the person skilled in the art.It is obvious that the above various specific form combinations and changes can form a plurality of schemes, and the specific implementation scheme of this embodiment is within the protection scope of the utility model.

[0042] Specifically, as shown in Figure 3 And Figure 4 ,

[0043] The lower die seat 2 of this embodiment is provided with a jacking device 5, and the jacking device 5 has a guide column 51 that can move up and down, and the guide column 51 can jack up the plate located on the lower die insert 20.By setting the jacking device 5 on the lower die seat 2, after completing the stamping forming of the plate, the jacking action of the jacking device 5 can conveniently take the workpiece from the lower die seat 2.

[0044] For the specific arrangement of the jacking device 5, there are of course a variety of different structural options. In the present embodiment, as shown in the drawings, the lower die seat 2 is provided with a jacking hole, and the jacking device 5 is provided with a mounting disc 50 mounted in the jacking hole, and the mounting disc 50 is provided with a guide hole extending therethrough; a guide column 51 is slidingly arranged in the guide hole. At the same time, in order to improve the sealing performance of the jacking device 5, the mounting disc 50 of the present embodiment is provided with a first sealing ring 61 between the guide hole and the guide column 51, and a second sealing ring 62 is further arranged between the jacking hole on the lower die seat 2 and the mounting disc 50. Figure 4

[0045] The guide and cooperation structure of the mounting disc 50 and the guide column 51 not only facilitates the driving of the lifting action of the guide column 51, but also effectively ensures the smoothness of the action of the guide column 51. By arranging the sealing rings between the guide column 51 and the guide hole of the mounting disc 50, and between the mounting disc 50 and the jacking hole on the lower die seat 2, the sealing performance between the jacking device 5 and the lower die seat 2 is improved, which prevents the water in the water tank 3 from leaking out of the jacking device 5, and ensures the good environmental sealing conditions of the hot bath water in the water tank 3.

[0046] In order to facilitate the fixed installation of the mounting disc 50 on the lower die seat 2, a mounting hole 500 can be arranged on the mounting disc 50, and the mounting disc 50 is firmly fixed on the lower die seat 2 by means of bolts. Furthermore, the top of the guide column 51 of the present embodiment is formed with a top platform 510 protruding in the radial direction of the guide column 51, and the mounting disc 50 is formed with a sink 501 located at the top end of the guide hole; with the downward movement of the guide column 51, the top platform 510 is accommodated in the sink 501. By arranging the top platform 510 on the top of the guide column 51, the contact area of the guide column 51 with the plate during the jacking process can be increased, and the damage to the surface of the plate caused by the jacking action can be reduced. Furthermore, by arranging the sink 501 on the mounting disc 50, the top platform 510 can be completely accommodated in the sink 501 when the guide column 51 is lowered, so that the entire top surface of the jacking device 5 is flush, thereby ensuring the regularity of the bottom of the water tank 3.

[0047] ​Specifically, the oil cylinder and the hydraulic cylinder can be used to drive the guide column 51 to perform the jacking action. In view of the reciprocating lifting of the guide column 51 in water, a sealing design is performed at the contact position between the mounting disc 50 and the guide column 51 to ensure that the internal liquid does not leak. The first sealing ring 61 forms a leakage-proof effect between the guide hole of the mounting disc 50 and the guide column 51, and changes the mode of direct contact and friction between the guide column 51 and the inner wall of the guide hole during the reciprocating movement. Meanwhile, the hard contact between the top platform 510 and the sink 501 further ensures the sealing effect between the guide column 51 and the mounting disc 50. Preferably, two first sealing rings 61 and two second sealing rings 62 are arranged to form two seals, thereby enhancing the sealing performance. Through the arrangement of the sealing ring and the sink 501 and other structures, it is detected that the entire jacking device 5 can effectively ensure the water leakage prevention effect of the guide column 51 during the movement.

[0048] In addition, as shown in Figure 1 the water tank 3 of the present embodiment is also provided with a heating device for heating the water in the water tank 3. By arranging the heating device in the water tank 3, the heater 300 in the heating device cooperates with the temperature controller to perform real-time heating control on the water in the water tank 3, thereby forming a boiling water environment in the water tank 3, which is beneficial to ensure that the plate material completes the stamping and hot water bath cooling process under good hot bath conditions, so that the plated layer is cooled and solidified, thereby avoiding the difference between the physical states of the plated layer and the substrate, and solving the problem of mechanism damage in the hot forming process of the galvanized plate material. The installation mode of the heater 300 can be flexibly arranged; in the present embodiment, mounting hole positions are formed on the side wall of the water tank 3, and the heater 300 is fixed to the mounting hole positions by the mounting flange 30. The heater 300 is deep into the inside of the water tank 3 and is immersed in the water in the water tank 3.

[0049] In order to improve the durability of the equipment, the equipment can also be provided with a mold corrosion prevention facility. In the present embodiment, a magnesium alloy block is arranged in the water tank 3, and the upper die holder 1 is connected with a power supply device. Of course, the magnesium alloy block and the power supply device described above can be selectively and flexibly arranged, and only one of them can be arranged, or both of them can be arranged. The magnesium alloy placed in the water tank 3 of the mold can prevent the mold Fe matrix from being oxidized, thereby providing protection for the stamping forming in the water environment. In the water environment, iron loses electrons easily and is reduced, and the magnesium alloy (a magnesium alloy sample block can be welded on the inner wall of the water tank 3, or a magnesium alloy layer is plated, etc.) is in close contact with iron to form a chemical battery. The reducing property of magnesium element is stronger than that of iron element, and magnesium element loses electrons more easily, so that the loss of electrons of the magnesium alloy protects the iron, thereby forming a sacrificial anode. In this way, the iron components such as the lower die holder 2, the lower die insert 20 and the water tank 3 on the mold are well protected, and the rusting of the components is prevented. For the working condition of water stains on the upper die, a micro-current is supplied to the upper die holder 1 during the unmanned operation, thereby forming an electron barrier to effectively prevent the upper die holder 1 and the upper die insert 10 from being reduced and rusted.

[0050] As mentioned before, the steam collecting device 4 can have various forms of arrangement. Preferably, in the present embodiment, as shown in Figure 2 , Figure 5 and Figure 6 , the steam collecting device 4 has a steam collecting pipe 42 arranged on the upper die seat 1, and a fan 41 arranged on the steam collecting pipe 42; wherein the fan 41 can be directly fixed to the side wall of the upper die seat 1, and a protective cover 40 is arranged on the side wall of the upper die seat 1 for the fan 41 to play a protective role.

[0051] Meanwhile, the water tank 3 of the present embodiment is provided with a circulating device, and the water vapor discharged through the steam collecting pipe 42 can be condensed by the circulating device and returned to the water tank 3. The circulating device is arranged in conjunction with the steam collecting device 4, so that the water vapor discharged by the steam collecting device 4 can be treated, and then the treated and newly supplemented water can be re-supplemented into the water tank 3. Based on the above arrangement, preferably, the circulating device of the present embodiment is further provided with a filtering unit, and the water (including the condensed water of the water vapor and the newly supplemented water) passing through the circulating device is filtered by the filtering unit before being returned to the water tank 3. Through the filtration of the condensed water and the newly supplemented water, the cleanliness of the water environment in the water tank 3 can be effectively maintained.

[0052] Specifically, the steam collecting pipe 42 of the present embodiment includes a plurality of branch pipes arranged at intervals on the side of the upper die seat 1 facing the water tank 3, and a main pipe arranged outside the upper die seat 1; the fan 41 is arranged on the main pipe, each branch pipe is communicated with the main pipe, and a ventilation hole 420 is formed on each branch pipe. By arranging a plurality of branch pipes in the steam collecting pipe 42 and using the ventilation holes 420 arranged on the branch pipes, the water vapor formed above the water tank 3 can be better sucked. In the present embodiment, three branch pipes are arranged, which are fixed on the upper die seat 1 by pipe clamps 43 and respectively located at the left, middle and right positions of the two upper die inserts 10. According to the suction demand, a fan 41 with a specific wind speed can be matched with the steam collecting device 4, and a variable cross-section main pipe is connected to form a pipe system adhering to the lower surface of the upper die seat 1. In this way, the contact surface between the steam collecting device 4 and the air is effectively increased, and the high-concentration water vapor generated during the boiling of the water tank 3 and the contact process of the high-temperature plate can be more efficiently absorbed. After the water vapor is absorbed, it can be discharged into the external cold water through the discharge port of the steam collecting pipe 42, and after the water vapor is liquefied, the cold water is supplemented into the water tank 3 through the circulating device, forming a water circulation, and realizing the recycling and saving use of water resources.

[0053] In summary, the plate forming equipment of the embodiment, the steam collecting device 4 is arranged in the water bath system between the upper die and the lower die, in the process of stamping forming the plate, the water vapor rising from the water tank 3 can be collected and discharged by the steam collecting device 4, the air circulation flow formed by the pipeline of the steam collecting device 4 can discharge a large amount of water vapor, reduce the moisture of the equipment machine tool, improve the problem of moisture and corrosion of the equipment due to water vapor, and further reduce the probability of equipment failure.

[0054] Through the above overall arrangement, the utility model provides a novel galvanized plate hot bath forming die equipment, focuses on solving the problem of coating cooling and solidification in the hot stamping forming process of the galvanized high-strength plate, can avoid the difference in state of the coating and the substrate in physical cooling, solves the problem of mechanism damage in the hot forming process of the galvanized plate; at the same time, through the arrangement of the steam collecting device 4, environmental pollution can be reduced, and continuous and stable production can be ensured.

[0055] In the stamping and water bath cooling process of the plate, the plate is heated to 850-900 DEG C, the plate matrix is austenitized, and then the plate is cooled in the boiling water (85-100 DEG C) of the water tank 3, the plate quenching matrix temperature is reduced to 650 DEG C or less, and the galvanized layer is solidified. The whole process is free of tensile stress deformation, so the liquid metal induced metal brittleness (LMIE, liquid metal induced embrittlement) phenomenon does not occur, and the plate forming and quenching are completed synchronously.

[0056] Wherein, the plate also meets the cooling law after entering the water, the water is heated to boiling water state, and when the water temperature does not reach the set value, the heating device can be heated; with the red-hot plate taken out from the heating furnace and added to the water tank 3, the temperature of the water can be kept at 100 DEG C boiling state; after the galvanized layer on the plate is instantaneously cooled and solidified in the water tank 3, the machine tool drives the upper die seat 1 to descend, and the stamping forming of the plate is completed by the upper die insert 10 and the lower die insert 20. On the physical level, when the plate enters the water, the surface of the plate and the water temperature difference is large, the water forms a gas film when it meets high temperature, which protects the coating, ensures that the surface coating is not damaged by water impact after entering the water, and ensures the integrity of the coating.

[0057] It can be seen that the plate forming equipment has low overall manufacturing cost and can guarantee the plating quality of the plate. Compared with the prior art of indirect hot forming and water bath forming outside the mold, the scheme of the present application greatly reduces the development cost of the mold, and solves the problem that the formed plating layer is prone to defects when the galvanized plate is directly hot formed. Moreover, since the plate forming equipment can make the stamping forming and cooling of the plate and the solidification of the zinc layer be synchronized, the production rhythm is effectively improved, the plate only needs to be taken out from the furnace and placed in the mold for immediate forming, the existing scheme is simplified, and the work efficiency is improved. Especially in the automobile industry, the use of galvanized plates has not been widely promoted due to the technical scheme, the present application has practical utility for the problems faced in the actual production of galvanized plates, solves the problems of high production cost and slow rhythm, and is suitable for large-scale production.

[0058] The above is only a preferred embodiment of the present application, and the detailed configuration explanation, specific structure setting form example, or assembly connection mode expression are all for the need of full disclosure, so that the present application can be better implemented by those skilled in the art, and not to limit the protection scope of the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A plate forming device, characterized in that: comprising an upper die, a lower die, and a water bath system, the upper die comprising an upper die seat (1) and an upper die insert (10) arranged on the upper die seat (1), the lower die comprising a lower die seat (2) and a lower die insert (20) arranged on the lower die seat (2); the water bath system comprising a water tank (3) arranged on the lower die seat (2), and a steam collection device (4) arranged on the upper die seat (1); when the upper die and the lower die are closed, the forming surfaces of the upper die insert (10) and the lower die insert (20) are both located in the water tank (3); the steam collection device (4) is used to discharge the water vapor formed above the water tank (3) to the outside of the device.

2. The plate forming device according to claim 1, characterized in that: the lower die seat (2) is provided with a lifting device (5), the lifting device (5) has a guide column (51) that can move up and down, and the guide column (51) can lift the plate located on the lower die insert (20).

3. The plate forming device according to claim 2, characterized in that: the lower die seat (2) is provided with a lifting hole, the lifting device (5) has a mounting disc (50) mounted in the lifting hole, and the mounting disc (50) is provided with a guide hole that penetrates up and down; the guide column (51) is slidingly arranged in the guide hole.

4. The plate forming device according to claim 3, characterized in that: a first sealing ring (61) is arranged between the guide hole and the guide column (51), and / or a second sealing ring (62) is arranged between the lifting hole and the mounting disc (50).

5. The plate forming device according to claim 3, characterized in that: the top of the guide column (51) is formed with a top platform (510) that protrudes outward in the radial direction of the guide column (51), and the mounting disc (50) is formed with a sink (501) located at the top end of the guide hole; as the guide column (51) moves downward, the top platform (510) is accommodated in the sink (501).

6. The plate forming device according to claim 1, characterized in that: the water tank (3) is provided with a heating device for heating the water in the water tank (3).

7. The plate forming device according to claim 1, characterized in that: a magnesium alloy block is arranged in the water tank (3), and / or an electrifying device is connected to the upper die seat (1).

8. The plate forming device according to any one of claims 1 to 7, characterized in that: the steam collection device (4) has a steam collection pipeline (42) arranged on the upper die seat (1), and a fan (41) arranged on the steam collection pipeline (42); the water tank (3) is provided with a circulating device, and the water vapor discharged through the steam collection pipeline (42) can be condensed and returned to the water tank (3) by the circulating device.

9. The plate forming device according to claim 8, characterized in that: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ The steam collecting pipe (42) comprises a plurality of branch pipes arranged at intervals on the side of the upper die holder (1) facing the water tank (3), and a main pipe arranged outside the upper die holder (1); The fan (41) is arranged on the main pipe, each branch pipe is communicated with the main pipe, and a ventilation hole (420) is arranged on each branch pipe.

10. The plate forming apparatus according to claim 8, wherein: A filter unit is arranged in the circulating device, and the water circulating through the circulating device is filtered by the filter unit and then returned to the water tank (3).

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