A sole forming machine

Abstract

The present invention relates to a sole forming machine, in which the steam conveying mechanism of the forming machine replaces the original hose with a fixed metal steam pipeline, thereby avoiding the problems that the original hose is constantly stretched and folded during the continuous opening and closing of the movable mold frame, and the hose is easily damaged, leaked, aged, and easily damaged under the pressure and temperature of high-temperature steam. At the same time, it also solves the problem that the original hose is too long and causes large steam loss. The setting of the locking mechanism enables rapid mold locking between the fixed mold frame and the movable mold frame, and the dividing tank divides the tank body into a storage chamber and a feeding chamber with different pressures above and below through a dividing plate. By setting the dividing plate and the dividing plate, the feeding amount of the foaming material in the storage chamber can be accurately controlled, and the vacuum pump can consume the foaming material in the feeding chamber at one time, avoiding frequent starting and stopping, delaying the service life of the vacuum pump, achieving rapid cooling and shaping, and realizing integrated automatic injection and processing, thereby improving product manufacturing efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of molding machines, in particular to a sole molding machine. Background Art

[0002] TPU foam particles are microporous materials with stable structures obtained by foaming TPU raw materials through physical or chemical methods. Their diameter is generally between 5mm and 7mm. Foam materials have their unique advantages, including: 1) excellent impact load resistance. When the foam plastic is subjected to impact compression, the internal bubbles play a role of compression rebound, consuming the impact energy, and thus have better cushioning and shock absorption functions; 2) excellent thermal insulation performance. The bubbles inside the polymer are filled with gas. However, the heat transfer coefficient of gas is generally lower than that of polymer. At the same time, the pores can prevent air convection, so the foam plastic has a thermal insulation function; 3) high specific strength. The ratio of material strength to material relative density is called specific strength. The strength of foam plastic is slightly lower than that of raw materials, while the density is greatly reduced. Therefore, the specific strength of foam plastic is usually larger.

[0003] The process currently used for TPU applications in shoe material production is the TPU foaming process. The so-called "TPU foaming process" is actually like popcorn. The TPU is made into granules. You can think of these granules as grains of old corn. Then they are thrown into a machine, which is similar to a popcorn machine. After high temperature and high pressure, these corns become popcorn. Then, a steam molding process is used to process about 2,000 popcorn granules into the desired sole shape. During this process, the outermost layer of the foamed granules slightly melts and adheres to form a stable shape. At the same time, the internal pore structure is not affected. The resulting popcorn sole has many advantages such as soft texture, good elasticity, good cushioning performance, low pressure energy loss, good durability, and good thermal insulation performance. Its surface presents a granular appearance and is favored by many consumers. Existing popcorn sole forming machines have problems such as complex structure, manual loading, and low cooling efficiency. As a result, they have the following disadvantages in actual use:

[0004] In the molding device of the sole molding machine, the concave mold is installed in the fixed mold frame fixed on the frame, and the punch is installed in the movable mold frame. The hydraulic drive mechanism drives the movable mold frame to drive the punch to move to achieve mold closing or mold opening. After mold closing, the foaming material is injected into the mold through the material gun, and then high-temperature steam is injected into the mold through the steam pipe to expand the foaming material to fill the cavity and cause a cross-linking reaction. After molding is completed, the steam pipe is closed and the water inlet valve is opened to inject cooling water into the mold to cool the foam and shape it. Then, the water inlet valve is closed, the drain pipe is opened, and the cooling water in the mold is discharged. Then, under the drive of the hydraulic drive mechanism, the movable mold frame drives the punch away from the fixed mold frame to open the mold and take out the finished product. In order to ensure that both heating and cooling meet the needs of the foam molding process, Corresponding steam pipes and drainage pipes for discharging cooling water are provided on the frame and the movable mold frame to supply steam into the die or discharge cooling water; the steam supply to the punch of the foam molding machine in the prior art is achieved by connecting a hose installed on the movable mold frame with a steam main pipe fixed to the frame to ensure that the movable mold frame can move smoothly; similarly, the drainage pipe on the movable mold frame also adopts a hose structure. In this way, during the foam molding process, as the mold is continuously opened and closed, the hose is continuously stretched and folded. Under the pressure and temperature of the high-temperature steam, the hose is easily damaged and leaked. At the same time, in order to ensure that the movable mold frame can open and close the mold smoothly, the length of the hose needs to be set relatively long, resulting in large steam waste and loss.

[0005] When the sole forming machine is working, the mold needs to be fixed to the equipment using a mold frame for steam heating and pressurization. In the prior art, the mold is usually fixed to the mold frame using bolts or a pressure plate. Taking bolts as an example, when fixing with bolts, they need to be fixed one by one, which is inefficient and unstable when locking the mold.

[0006] The material distribution tank on the sole molding machine is usually set on the feeding pipeline of the sole molding machine to temporarily store the TPU foam material and transport the foam material to the mold through a pipe connected to the material gun through a vacuum pump. However, the feeding of the sole molding machine is intermittent, and the vacuum pump needs to be started frequently. Frequent starting of the vacuum pump will greatly shorten the service life of its motor, which will increase the use cost and maintenance cost of the equipment. Summary of the Invention

[0007] The technical problem to be solved by the present invention is to provide a sole forming machine in view of the deficiencies of the above-mentioned prior art.

[0008] To achieve the above-mentioned purpose, the present invention provides the following technical scheme: a sole forming machine, comprising a frame, a material distribution tank, a fixed mold frame and a movable mold frame correspondingly arranged on the frame, a hydraulic drive mechanism for controlling the movable mold frame to approach or move away from the fixed mold frame, and a steam main pipe and a water drainage main pipe arranged on the frame, the movable mold frame is provided with an air intake valve and a water inlet valve, characterized in that: the steam main pipe delivers steam to the given mold frame and the movable mold frame through a steam delivery mechanism, the water drainage main pipe drains water inside the given mold frame and the movable mold frame through a drainage mechanism, the upper and lower ends of the fixed mold frame and the movable mold frame are provided with a locking mechanism for locking or unlocking the fixed mold frame and the movable mold frame, the material distribution tank comprises a tank body, a feed pipe arranged at the upper end of the tank body and a plurality of discharge joints arranged at the lower end of the tank body, the discharge joints are connected by a material feed pipe. The gun is connected to the feed port on the fixed mold frame, and a pressurization interface for inputting compressed air into the tank body is provided on the top of the tank body, and a partition plate is provided inside the tank body to divide the inside of the tank body into two independent and closed chambers, the chamber of the partition plate facing the pressurization interface is the storage chamber, and the chamber facing the discharge joint is the feeding chamber, and a number of blanking holes are opened on the partition plate, and a dividing plate is set against each other on the partition plate, and a number of dividing holes corresponding to the blanking holes are opened on the dividing plate, and a dividing center axis is provided in the center of the dividing plate, one end of the dividing center axis is connected to the dividing plate, and the other end is provided with a dividing drive mechanism after passing through the tank body, and the dividing drive mechanism drives the dividing plate to rotate on the partition plate, thereby connecting or disconnecting the dividing hole and the blanking hole.

[0009] With the above technical solution, when it is necessary to close the mold and inject the foaming material, the hydraulic drive mechanism drives the movable mold frame and the fixed mold frame to resist each other, and locks the movable mold frame and the fixed mold frame to each other through the locking mechanism to prevent the foaming material from pushing the movable mold frame and the fixed mold frame apart after expansion. The air inlet valve on the movable module of the locked movable mold frame is used to let external air into the movable mold frame, and the water inlet valve is used to connect to an external water source and introduce cooling water to achieve rapid cooling of the sole. Since TPU foaming material is volatile under normal pressure, it needs to be stored in a high-pressure environment, and the material gun is connected to the discharge joint and fed by a vacuum pump. In order to maintain the high-pressure environment, it needs to be started frequently and easily. The tank body is divided into a storage chamber and a feeding chamber with different pressures by a partition plate. By setting a dividing plate, the dividing drive mechanism drives the dividing plate to rotate on the dividing plate, and controls the time when the dividing hole and the blanking hole are connected and disconnected. The feeding amount of the foaming material in the storage chamber can be accurately controlled so that the foaming material fed into the feeding chamber is just controlled to be consumed in one molding, avoiding excessive foaming material in the feeding chamber, which leads to long-term volatilization in a non-high-pressure environment. At the same time, due to the upper and lower isolation of the partition plate, when the material gun feeds the molding machine, the storage chamber is a closed high-pressure environment, which can make the vacuum pump consume the foaming material in the feeding chamber at one time, avoiding frequent start and stop and delaying the service life of the vacuum pump. After the foaming material is injected into the mold, the steam main pipe conveys steam to the given mold frame and the movable mold frame through the steam conveying mechanism to make the internal foaming material adhere and expand to form the sole. The water inlet valve is used to connect to the external water source and introduce cooling water to realize rapid cooling of the sole. Then the drainage mechanism drains the water inside the given mold frame and the movable mold frame through the drainage main pipe, realizing rapid cooling and shaping, realizing integrated automatic injection and processing, and improving product manufacturing efficiency.

[0010] The above-mentioned sole forming machine can be further configured as follows: a return pipe is provided at the bottom of the tank body, one end of the return pipe passes through the tank body and is connected to the feeding chamber, and the other end passes through the tank body and is connected to the storage chamber, a first return pump is provided on the return pipe to transport the foaming material in the feeding chamber to the storage chamber, a return chamber is provided on the return pipe, a second return pump is provided between the return chamber and the feeding chamber, and a material gun return pipe is provided between the return chamber and the material gun to return the unused foaming material in the material gun to the return chamber.

[0011] By adopting the above technical scheme, some foaming materials that have not been consumed in the feeding chamber and the foaming materials that have not been digested in the feeding pipe and returned to the feeding chamber will be retained in the feeding chamber during the sole molding process. If volatilization is not avoided, they will return to the feeding pipe at the bottom of the tank body, and the foaming materials in the feeding chamber will be transported to the upper layer of the storage chamber through the first return pump to continue to maintain the pressure, thereby realizing recycling and improving the product yield. By arranging a return chamber on the return pipe, the return chamber is used as a transfer station between the feeding chamber and the storage chamber. The retained foaming material in the feeding chamber first enters the return chamber through the second return pump. At this time, the first return pump is closed, and then the foaming material in the return chamber is returned to the storage chamber through the first return pump. At this time, the second return pump is closed, thereby ensuring that the air pressure in the storage chamber is stable, and the unused foaming material in the material gun is sucked into the return chamber through the material gun return pipe for subsequent return to the storage chamber for recycling.

[0012] and a tube connecting the discharging opening of the inflatable container and the feeding means for conveying the compressed air to the outlet port of the inflatable container, the tube having a check valve in it and the like, and a check valve in it at the pump end. The inflatable container is connected to the outlet port of the inflatable container to generate an overflow pipe.

[0013] By adopting the above technical solution, the air in and out of the material distribution cylinder drives one end of the material distribution swing arm to move forward and backward, and the other end of the material distribution swing arm is fixedly connected to the material distribution center shaft, which can drive the material distribution center shaft to rotate back and forth, thereby controlling the rapid connection and disconnection of the material distribution hole and the drop hole, accurately controlling the material distribution amount of the material distribution tank, and improving the stability of the pressure maintenance of the storage chamber. The pressurization interface is used to pressurize the storage chamber, and the air pressure in the storage chamber can be detected in real time by installing an air pressure sensor in the storage chamber, and by installing a pressure relief joint, when the air pressure in the storage chamber exceeds the preset pressure of the air pressure sensor, the pressure inside the tank body can be automatically adjusted through the pressure relief joint, avoiding the safety hazards caused by excessive pressure, and at the same time avoiding the foaming material in the storage chamber from the pressure relief joint. In order to discharge the foam material from the head, a filter is set in the storage chamber to block the foam material, so that the foam material can enter the tank body from the feed pipe passing through the filter without being discharged and pressed out. By setting a visual window, the state of the foam material in the storage chamber and the feeding chamber can be monitored in real time, which is convenient for staff to inspect and repair. By setting a locking spring that is sleeved between the outer circumference of the distribution center axis, the distribution plate can be pressed tightly against the partition plate due to the elastic force of the locking spring, thereby improving the sealing effect between the distribution plate and the partition plate. Since the visual window outside the tank body can see the stacking height of the foam material in the storage chamber in real time, a photoelectric sensor (storage material sensor) is set at a preset height to detect the current height of the foam material, and the storage chamber can be automatically and quickly replenished with the feed pump.

[0014] The above-mentioned sole forming machine can be further configured as follows: the clamping mechanism includes a plurality of clamping hooks arranged on the movable mold frame, a plurality of clamping seats arranged on the fixed mold frame corresponding to the clamping hooks, a clamping rod inserted in the clamping seat, and a clamping drive source for driving the clamping rod to move in the clamping seat, the clamping seats are each provided with a clamping groove corresponding to the clamping hooks, the clamping rod is provided with a locking module on one side corresponding to the clamping seat, the clamping seat is each provided with a module through hole for the locking module to pass through, the clamping hook is provided with a locking groove adapted to the locking module, and when the fixed mold frame and the movable mold frame are connected by liquid When the pressure drive mechanism is closing the mold, the locking hooks are all inserted into the corresponding locking grooves, and the locking drive source drives the locking rod to move, so that the locking module penetrates into the locking groove and thus limits the locking hooks in the locking groove. The locking modules are each provided with a limit platform protruding outward, and the locking hooks are each provided with a locking hook corresponding to the limit platform. A hook groove for the limit platform to penetrate is formed between the locking hook and the locking hook, and the hook groove is connected to the locking groove. A limit through hole for the limit platform to pass through is provided on the locking seat. When the locking module is inserted in the locking groove, the limit platform is also penetrated into the hook groove and abuts against the inner wall of the locking hook.

[0015] With the above technical solution, the mold locking drive source mainly drives the mold locking rod forward and backward, so this function can be achieved by using a pneumatic cylinder or an oil cylinder. At the same time, in order to increase the locking force, the mold locking drive source is preferably a hydraulic cylinder. When mold locking is required, the hydraulic drive mechanism drives the movable mold frame to approach the fixed mold frame, so that the mold locking hook is inserted into the corresponding mold locking groove, and the steam socket is also inserted into the steam interface to achieve rapid combination. Then the mold locking drive source drives the locking module corresponding to the mold locking seat to be synchronously inserted into each locking groove. Due to its hook-shaped structure, the mold locking hook is locked by the locking module after being inserted into the mold locking groove, and the locking module is placed in the module through hole, so that the product between the fixed mold frame and the movable mold frame will not be loosened during molding and expansion, and the mold locking mechanism of the same drive source can efficiently complete locking and unlocking, thereby improving the mold locking efficiency, and does not interfere with the steam pipeline, and complements each other, greatly improving the processing efficiency and product quality of the molding device. By setting an outward-protruding limit platform and making it pass through the hook groove, the limit platform limits the freedom of the clamping hook in the up and down directions, avoiding the clamping hook being squeezed in the up and down directions when the internal product is molded and expanded, resulting in the failure of the finished product to be fixed.

[0016] The above-mentioned sole forming machine can be further configured as follows: the locking rod includes at least two threaded connecting rods, the locking module is provided with a locking sleeve threadedly connected to the threaded connecting rod, the locking base is provided with a sleeve through hole for the locking sleeve to pass through, the threaded connecting rod is provided with a locking nut at the position corresponding to the locking sleeve, the locking nut is threadedly connected to the threaded connecting rod and is against the locking sleeve, and a locking sensor is provided at the end of the locking base away from the locking drive source, and the locking sensor is electrically connected to the locking drive source.

[0017] By adopting the above technical solution, the locking module and the limit table are both installed on the locking sleeve, and the two ends of the locking sleeve are connected to the threaded connecting rod through a threaded connection structure, which is convenient for installation and disassembly. In addition, threaded connecting rods of different lengths or locking modules of different specifications can be replaced according to molding machines of different specifications, which greatly improves the adaptability of the device. The setting of the locking nut can stably fix the locking sleeve on the threaded connecting rod to prevent loosening. At the same time, the locking nut can also limit the travel distance of the locking sleeve to prevent the travel distance from being too long. A locking sensor is set at the locking seat at one end away from the locking drive source to detect whether the mold is locked normally in real time, to avoid malfunction of the molding machine caused by malfunction of the locking device and thus improve the stability of the equipment. The locking sensor is preferably a photoelectric sensor. The photoelectric sensor has the advantages of short response time, no contact and stable detection. Using a photoelectric sensor as a locking sensor can know in real time whether the mold is locked correctly.

[0018] The above-mentioned sole forming machine can be further configured as follows: the steam delivery mechanism includes a steam interface and a steam socket respectively arranged on the upper parts of the fixed mold frame and the movable mold frame and correspondingly engaged with each other, the steam socket is connected to the inner cavity of the movable mold frame, the steam main pipe is connected to the steam interface, and steam is delivered to the movable mold frame through the steam socket, and one end of the movable mold frame corresponding to the steam socket is provided with a steam on-off component for controlling the connection or disconnection between the steam socket and the steam interface; a fixed mold steam distribution pipe and a movable mold steam distribution pipe respectively connected to the steam main pipe are installed on the upper part of the fixed mold frame, one end of the fixed mold steam distribution pipe is connected to the steam main pipe through a fixed mold steam solenoid valve, and the other end penetrates into the fixed mold frame through a number of fixed mold air pipes to deliver steam to a given mold frame; one end of the movable mold steam distribution pipe is connected to the steam main pipe through a movable mold steam solenoid valve, and the other end is connected to the steam interface one by one through the movable mold air pipe; an exhaust valve is provided on the movable mold frame corresponding to the steam socket and on the fixed mold steam distribution pipe, and the exhaust valve is connected to the inner cavity of the movable mold frame.

[0019] By adopting the above technical solution, the steam interface and the steam socket are arranged on the upper part of the fixed mold frame and the movable mold frame for conveying steam, so that the fixed metal steam pipeline replaces the original hose. When the mold needs to be closed, the hydraulic drive mechanism controls the movable mold frame to be close to the fixed mold frame, so that the steam socket is connected to the steam interface, so that the steam in the steam main pipe can be conveyed to the fixed mold frame through the fixed mold steam distribution pipe, and then to the movable mold frame through the movable mold steam distribution pipe. This avoids the original hose from being constantly stretched and folded during the continuous opening and closing of the movable mold frame, and the problem of the hose being easily damaged, leaking, aging, and fragile under the pressure and temperature of high-temperature steam. At the same time, it also solves the problem of the original hose being too long. It causes the problem of large steam loss, and due to the quick clamping structure of the steam interface and the steam socket, it will not interfere with the hydraulic drive mechanism, so that it can quickly complete the connection and disassembly of the dynamic mold steam pipeline, and by setting the steam on-off component, it can conveniently control the conduction or disconnection of the steam socket and the steam interface, which is convenient for controlling the sole molding. By setting the fixed mold steam distribution pipe and the dynamic mold steam distribution pipe, it is convenient to supply air to the given mold frame and the dynamic mold frame at the same time, improve the molding reaction speed and the constant temperature of each angle of the sole, and improve the product quality. By setting the exhaust valve, when the internal steam pressure of the gas is too high, the exhaust can be quickly exhausted through the exhaust valve, thereby improving the stability of the molding machine processing.

[0020] The above-mentioned sole forming machine can be further configured as follows: the steam on-off component includes a steam on-off cylinder arranged at the end of the movable mold frame away from the steam interface and a steam on-off plug arranged at the output end of the steam on-off cylinder; a steam sealing ring is provided in the steam interface for sealing against the outer periphery of the steam socket; a steam channel is provided in the steam socket, one end of which is connected to the steam interface and the other end is connected to the inner cavity of the movable mold frame; the steam on-off cylinder drives the steam on-off plug to seal or open the steam channel.

[0021] By adopting the above technical solution, the steam on-off cylinder can drive the steam on-off plug to press against or release the steam channel, thereby quickly controlling the steam delivery state in the dynamic mold frame. By setting a steam sealing ring, a soft seal is used to achieve a closed connection between the steam socket and the steam interface to avoid air leakage, while facilitating plugging and unplugging and quick connection.

[0022] The above-mentioned sole forming machine can be further configured as follows: the drainage mechanism includes a drainage interface and a drainage socket respectively arranged at the lower part of the fixed mold frame and the movable mold frame and correspondingly engaged with each other, the drainage socket is communicated with the inner cavity of the movable mold frame, and a fixed mold drainage pipe and a movable mold drainage pipe respectively connected to the drainage main pipe are installed at the lower part of the fixed mold frame, one end of the fixed mold drainage pipe is connected to the drainage main pipe through a fixed mold drainage solenoid valve, and the other end is used to drain the given mold frame by penetrating into the interior of the fixed mold frame, one end of the movable mold drainage pipe is connected to the drainage main pipe through the movable mold drainage solenoid valve, and the other end is communicated one-to-one with the drainage interface; when the fixed mold frame and the movable mold frame are clamped by the hydraulic drive mechanism, the steam sockets are all inserted into the steam interface, the locking hooks are all inserted into the corresponding locking grooves, and the drainage sockets are all inserted into the drainage interface, and one end of the corresponding drainage socket of the movable mold frame is provided with a drainage on-off component for controlling the connection or disconnection of the drainage socket and the drainage interface.

[0023] By adopting the above technical solution, the drainage interface and the drainage socket are arranged at the lower part of the fixed mold frame and the movable mold frame to pump out the cooling water in the fixed mold frame and the movable mold frame, so that the fixed metal drainage pipe replaces the original hose. When the mold needs to be closed, the hydraulic drive mechanism controls the movable mold frame to be close to the fixed mold frame, so that the drainage socket is connected to the drainage interface, so that the drainage in the drainage main pipe can be transported to the fixed mold frame through the fixed mold drainage distribution pipe, and then transported to the movable mold frame through the movable mold drainage distribution pipe. This avoids the problem that the original drainage hose is constantly stretched and folded during the continuous opening and closing of the movable mold frame, and the hose is easily damaged, leaked, aged, and fragile. At the same time, it also solves the problem of slow drainage caused by the original hose being too long. Due to the quick clamping structure of the drainage interface and the drainage socket, it will not interfere with the hydraulic drive mechanism, so that it can quickly complete the connection and disassembly of the movable mold drainage pipe, and by setting the drainage on-off component, the drainage socket and the drainage interface can be conveniently controlled to be connected or disconnected, which facilitates the control of rapid cooling of the sole.

[0024] The above-mentioned sole forming machine can be further configured as follows: the drainage on-off assembly includes a drainage on-off cylinder arranged at one end of the movable mold frame away from the drainage interface and a drainage on-off plug arranged at the output end of the drainage on-off cylinder; a drainage sealing ring is provided in the drainage interface for sealing against the outer periphery of the drainage socket; a drainage channel is provided in the drainage socket, one end of which is connected to the drainage interface and the other end is connected to the inner cavity of the movable mold frame; the drainage on-off cylinder drives the drainage on-off plug to seal or open the drainage channel.

[0025] By adopting the above technical solution, the drainage on-off cylinder can drive the drainage on-off plug to press against or release the drainage channel, thereby quickly controlling the drainage status in the dynamic mold frame. By setting a drainage sealing ring, the drainage socket and the drainage interface are sealed and connected through soft sealing to avoid water leakage, while facilitating plugging and unplugging and quick connection.

[0026] The above-mentioned sole forming machine can be further configured as follows: a cooling circulation mechanism is provided at the drainage main pipe corresponding to the frame, and the cooling circulation mechanism includes a water vapor separation box connected to the drainage main pipe, an air suction box arranged on the upper part of the water vapor separation box and communicated with the water vapor separation box, a vacuum cooling pump is connected above the air suction box, and a water tank control valve connected to an external water tank is provided on the water vapor separation box.

[0027] By adopting the above technical solution, after the drainage main pipe is drained, the high-temperature cooling water flowing out from the movable mold frame and the fixed mold frame can be extracted by the water pump and temporarily stored in the water vapor separation box and pre-cooled, and does not flow directly back to the external water storage tank, thereby ensuring that the cooling water subsequently entering the mold is all low-temperature cooling water in the water storage tank, and cooperates with the vacuum cooling pump to accelerate the cooling, thereby ensuring the cooling efficiency; when the high-temperature cooling water in the water vapor separation box is cooled through the cooling pipe, the external water storage tank continues to supply cooling water to the mold for recycling.

[0028] The present invention will be further described below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a three-dimensional schematic diagram of an embodiment of the present invention.

[0030] Figure 2 2 is a top view of an embodiment of the present invention.

[0031] Figure 3 This is the stereoscopic view of the embodiment of the present invention without the frame.

[0032] Figure 4 The three-dimensional image after removing the frame of the embodiment of the present invention Figure 2 .

[0033] Figure 5 This is a plan view of the movable mold frame according to an embodiment of the present invention.

[0034] Figure 6 This is a partial state diagram of the fixed mold frame and the movable mold frame when the mold is locked according to an embodiment of the present invention.

[0035] Figure 7 for Figure 6 AA section view.

[0036] Figure 8 for Figure 6 BB cross-sectional view.

[0037] Figure 9 for Figure 8 Enlarged view of point E.

[0038] Figure 10 for Figure 7 Enlarged view of point C.

[0039] Figure 11 for Figure 7 Enlarged view of point D.

[0040] Figure 12 This is a partial schematic diagram of the clamping mechanism after clamping the mold according to an embodiment of the present invention.

[0041] Figure 13 It is a three-dimensional schematic diagram of the clamping mechanism according to an embodiment of the present invention.

[0042] Figure 14 It is a three-dimensional schematic diagram of a material distribution tank according to an embodiment of the present invention.

[0043] Figure 15 for Figure 14 Exploded diagram.

[0044] Figure 16 A three-dimensional schematic diagram of a material distribution tank according to an embodiment of the present invention Figure 2 . DETAILED DESCRIPTION

[0045] like Figure 1 - Figure 4 、 Figure 14-16As shown, a sole forming machine includes a frame 1, a material distribution tank 2, a fixed mold frame 3 and a movable mold frame 4 correspondingly arranged on the frame 1, a hydraulic drive mechanism 11 for controlling the movable mold frame 4 to approach or move away from the fixed mold frame 3, and a steam main pipe 5 and a drainage main pipe 6 arranged on the frame 1. An air inlet valve 41 and a water inlet valve 42 are provided at the movable mold frame 4. The steam main pipe 5 delivers steam to the given mold frame 3 and the movable mold frame 4 through a steam delivery mechanism. The drainage main pipe 6 drains water from the given mold frame 3 and the movable mold frame 4 through a drainage mechanism. Locking mechanisms 7 for locking or unlocking the fixed mold frame 3 and the movable mold frame 4 are provided at the upper and lower ends of the fixed mold frame 3 and the movable mold frame 4. The material distribution tank 2 includes a tank body 21, a feeding pipe 22 arranged at the upper end of the tank body 21, and a plurality of discharge joints 23 arranged at the lower end of the tank body 21. The discharge joint 23 is connected to the feed port 31 on the fixed mold frame 3 through a material gun. A pressurization interface 24 for inputting compressed air into the tank body 21 is provided on the top of the tank body 21. A partition plate 25 is provided inside the tank body 21 to divide the inside of the tank body 21 into two independent and closed chambers. The chamber facing the end of the partition plate 25 facing the pressurization interface 24 is the storage chamber a, and the chamber facing the end of the discharge joint 23 is the feeding chamber b. A number of blanking holes 251 are provided on the partition plate 25, and a dividing plate 26 is provided on the partition plate 25. A number of dividing holes 261 corresponding to the blanking holes 251 are provided on the dividing plate 26. A dividing center axis 262 is provided in the center of the dividing plate 26. One end of the dividing center axis 262 is connected to the dividing plate 26, and the other end is provided with a dividing hole after passing through the tank body 21. The material driving mechanism drives the material distribution plate 26 to rotate on the partition plate 25, thereby connecting or disconnecting the material distribution hole 261 and the material drop hole 251. A return pipe 27 is provided at the bottom of the tank body 21. One end of the return pipe 27 penetrates the tank body 21 and is connected to the feeding chamber b, and the other end passes through the tank body 21 and is connected to the storage chamber a. A first return pump 271 is provided on the return pipe 27 to transport the foaming material in the feeding chamber a to the storage chamber a. A return chamber c is provided on the return pipe 27. A second return pump 272 is provided between the return chamber c and the feeding chamber b. A material gun return pipe 273 is provided between the return chamber c and the material gun to return the unused foaming material in the material gun to the return chamber. The material distribution driving mechanism includes a material distribution cylinder 28 provided on the tank body 21, a gas cylinder provided on the material distribution cylinder 28 for transporting the foaming material The material distribution swing arm 281 at the output end, one end of the material distribution swing arm 281 is connected to the output end of the material distribution cylinder 28, and the other end is fixedly connected to the material distribution center shaft 262, so that the material distribution cylinder 28 drives the material distribution plate 26 to rotate along the partition plate 25, and the tank body 21 is provided with an air pressure sensor 211 for detecting the air pressure of the storage chamber a and a pressure relief joint 212 for venting the storage chamber a. The air pressure sensor 211 is electrically connected to the pressure relief joint 212, and the storage chamber a is provided with a filter screen 213 toward the pressure relief joint 212. The end of the feed pipe 22 passes through the filter screen 213, and the outside of the tank body 21 is provided with a visual window 214 for observing the storage chamber a and the feeding chamber b. The outside of the material distribution center shaft 262 is provided with a locking spring 263, and one end of the locking spring 263 is against the bottom of the tank body 21.The other end abuts against the material distribution swing arm 281. A material storage sensor (not installed in the figure) is provided at the visual window 214 for detecting the amount of foaming material stored in the storage chamber a. A feed pump 221 is provided on the feed pipe 22 to feed the material into the storage chamber a. The feed pump 221 is electrically connected to the material storage sensor.

[0046] like Figure 3-Figure 13 As shown, the clamping mechanism 7 includes a plurality of clamping hooks 43 arranged on the movable mold frame 4, a plurality of clamping seats 32 arranged on the fixed mold frame 3 and corresponding to the clamping hooks 43, a clamping rod 71 passing through the clamping seat 32, and a clamping cylinder 72 for driving the clamping rod 71 to move in the clamping seat 32. The clamping seat 32 is provided with a clamping groove 321 corresponding to the clamping hooks 43, and a locking module 73 is provided on one side of the clamping rod 71 corresponding to the clamping seat 32. A module through-hole 322 is provided for the locking module 73 to pass through, and a locking groove 431 adapted to the locking module 73 is provided on the locking hook 43. When the fixed mold frame 3 and the movable mold frame 4 are clamped by the hydraulic drive mechanism 11, the locking hook 43 is inserted into the corresponding locking groove 321, and the locking cylinder 72 drives the locking rod 71 to move, so that the locking module 73 passes through the locking groove 431 and thus restricts the locking hook 43 in the locking groove 321. The locking module 73 is provided with an outwardly protruding limit platform 74. The clamping hook 43 is provided with a locking hook 432 corresponding to the limit platform 74. A hook groove 433 for the limit platform 74 to pass through is formed between the locking hook 432 and the clamping hook 43. The hook groove 433 is connected to the locking groove 431. The clamping base 32 is provided with a limiting through hole 323 for the limit platform 74 to pass through. When the locking module 73 is inserted into the locking groove 431, the limit platform 74 is also passed through the hook groove 433 and abuts against the inner wall of the locking hook 432. The clamping rod 71 includes at least two threads. The connecting rod 711 and the locking module 73 are both provided with a locking sleeve 75 threadedly connected to the threaded connecting rod 711. The locking seat 32 is provided with a sleeve through hole 324 for the locking sleeve 75 to pass through. The threaded connecting rod 711 is provided with a locking nut 76 at the position corresponding to the locking sleeve 75. The locking nut 76 is threadedly connected to the threaded connecting rod 711 and abuts against the locking sleeve 75. A locking sensor 77 is provided at the end of the locking seat 32 away from the locking cylinder 72. The locking sensor 77 is electrically connected to the locking cylinder 72.

[0047] like Figure 3-Figure 10As shown, the steam delivery mechanism includes a steam interface 33 and a steam socket 44 which are respectively arranged on the upper part of the fixed mold frame 3 and the movable mold frame 4 and are correspondingly connected to each other. The steam socket 44 is connected to the inner cavity of the movable mold frame 4, and the steam main pipe 5 is connected to the steam interface 33, and steam is delivered to the movable mold frame 4 through the steam socket 44. One end of the movable mold frame 4 corresponding to the steam socket 44 is provided with a steam on-off component for controlling the connection or disconnection of the steam socket 44 and the steam interface 33. A fixed mold steam distribution pipe 51 and a movable mold steam distribution pipe 52 which are respectively connected to the steam main pipe 5 are installed on the upper part of the fixed mold frame 3. One end of the fixed mold steam distribution pipe 51 is connected to the steam main pipe 5 through a fixed mold steam solenoid valve 511, and the other end penetrates into the interior of the fixed mold frame 3 through a number of fixed mold air pipes 512 to deliver steam to the given mold frame 3. The movable mold steam distribution pipe 52 One end is connected to the steam main pipe 5 through the movable mold steam solenoid valve 521, and the other end is connected to the steam interface 33 one by one through the movable mold air supply pipe 522. An exhaust valve 53 is provided at the corresponding steam socket 44 of the movable mold frame 4 and the fixed mold steam distribution pipe 51. The exhaust valve 53 is connected to the inner cavity of the movable mold frame 4. The steam on-off component includes a steam on-off cylinder 45 arranged at the end of the movable mold frame 4 away from the steam interface 33 and a steam on-off plug 46 arranged at the output end of the steam on-off cylinder 45. A steam sealing ring 331 is provided in the steam interface 33 for sealing against the outer periphery of the steam socket 44. A steam channel 441 is opened in the steam socket 44, one end of which is connected to the steam interface 33 and the other end is connected to the inner cavity of the movable mold frame 4. The steam on-off cylinder 45 drives the steam on-off plug 46 to seal or open the steam channel 441.

[0048] like Figure 3-Figure 11As shown, the drainage mechanism includes a drainage interface 34 and a drainage socket 47 respectively arranged at the lower part of the fixed mold frame 3 and the movable mold frame 4, which are correspondingly connected to each other. The drainage socket 47 is communicated with the inner cavity of the movable mold frame 4. A fixed mold drainage pipe 61 and a movable mold drainage pipe 62 respectively connected to the drainage main pipe 6 are installed at the lower part of the fixed mold frame 3. One end of the fixed mold drainage pipe 61 is connected to the drainage main pipe 6 through the fixed mold drainage solenoid valve 611, and the other end is used to drain the given mold frame 3 by penetrating into the interior of the fixed mold frame 3. One end of the movable mold drainage pipe 62 is connected to the drainage main pipe 6 through the movable mold drainage solenoid valve 621, and the other end is connected to the drainage interface 34 one by one. When the fixed mold frame 3 and the movable mold frame 4 are clamped by the hydraulic drive mechanism 11, the steam sockets 44 are inserted into the steam interface 33, the clamping hooks 43 are inserted into the corresponding clamping grooves 321, the drainage sockets 47 are inserted into the drainage interface 34, and the movable mold frame 4 is provided with a control drainage socket 4 at one end corresponding to the drainage socket 47. 7 is a drainage on-off component that is connected or disconnected with the drainage interface 34. The drainage on-off component includes a drainage on-off cylinder 48 arranged at the end of the movable mold frame 4 away from the drainage interface 34 and a drainage on-off plug 49 arranged at the output end of the drainage on-off cylinder 48. The drainage interface 34 is provided with a drainage sealing ring 341 that is sealed against the outer periphery of the drainage socket 47. The drainage socket 47 is provided with a drainage channel 471 with one end connected to the drainage interface 34 and the other end connected to the inner cavity of the movable mold frame 3. The drainage on-off cylinder 48 drives the drainage on-off plug 49 to seal or open the drainage channel 471. A cooling circulation mechanism is provided at the corresponding drainage main pipe 6 of the frame 1. The cooling circulation mechanism includes a water vapor separation box 8 connected to the drainage main pipe 6, an air extraction box 9 arranged on the upper part of the water vapor separation box 8 and connected to the water vapor separation box 8, a vacuum cooling pump 91 is connected above the air extraction box 9, and a water tank control valve 81 connected to the external water storage tank is provided on the water vapor separation box 8.

[0049] The present invention provides a sole molding machine, in which the steam interface 33 and the steam socket 44 are arranged at the upper part of the fixed mold frame 3 and the movable mold frame 4 for conveying steam, and the drainage interface 34 and the drainage socket 47 are arranged at the lower part of the fixed mold frame 3 and the movable mold frame 4 for discharging cooling water in the mold frame. When the mold is closed, the hydraulic drive mechanism 11 pushes the movable mold frame 4 close to the fixed mold frame 3. At this time, the air intake valve 41 enters the air to clear the water droplets and residues in the sole mold, so that the several steam sockets 44 and the drainage sockets 47 on the movable mold frame 4 are just right, and the corresponding steam sockets 44 and the drainage sockets 47 on the fixed mold frame 3 are inserted. The drain interface 34 is sealed by the steam sealing ring 331 and the drain sealing ring 341 to prevent steam leakage. At this time, the clamping hooks 43 on the upper and lower sides of the movable mold frame 4 will also enter the clamping seat 32 corresponding to the fixed mold frame 3. The clamping cylinder 72 drives the clamping rod 7 to move, so that the locking module 73 penetrates the locking groove 431 and then restricts the clamping hook 43 in the water inlet valve 321. The limit platform 74 is also inserted into the hook groove 433 and abuts against the inner wall of the locking hook 432, thereby completing the clamping. At the same time, the clamping sensor 77 electrically connected to the clamping cylinder 72 will also receive the clamping signal and judge whether After the lock is completed, the drainage on-off cylinder 48 opens the drainage channel 471, the fixed mold steam solenoid valve 511 and the movable mold steam solenoid valve 521 are opened, and then the steam on-off cylinder 45 opens the steam channel 441, the movable mold steam solenoid valve 521 and the fixed mold steam solenoid valve 511 are opened, and steam enters the mold cavity, which increases the mold temperature while discharging the cold water-cooled air remaining in the mold from the drainage channel 471 at the bottom and the fixed mold drainage pipe 61, and closes the steam channel 441, the movable mold steam solenoid valve 521 and the fixed mold steam solenoid valve 511, closes the drainage channel 471, the fixed mold steam solenoid valve 521 and the fixed mold steam solenoid valve 511, and closes the drainage channel 471, the fixed mold steam solenoid valve 521 and the fixed mold steam solenoid valve 511. The steam solenoid valve 511 and the movable mold steam solenoid valve 521, the air in and out of the distribution cylinder 28 at the distribution tank 2 drives one end of the distribution swing arm 281 to move back and forth, so that the foaming material in the storage chamber a falls into the feeding chamber b, and then the feed port 31 is opened, and compressed air enters the material gun, and negative pressure is generated in the material gun, so that a pressure difference is formed between the air under normal pressure and the mold between the fixed mold frame 3 and the movable mold frame 4, and the foaming material in the distribution tank 2 is sucked into the mold with the help of the pressure difference, and the foaming material in the material gun and the excess material in the feeding chamber b are returned to the storage chamber a through the material gun return pipe 273 and the return pipe 27 respectively to realize circulation.

[0050] When high-temperature steam is needed to heat the foaming material in the mold, the steam channel 441 is opened, the drainage channel 471, the fixed mold steam solenoid valve 511 and the movable mold steam solenoid valve 521 are closed to prevent high-temperature steam from leaking from the drainage, and then the movable mold steam solenoid valve 521 and the fixed mold steam solenoid valve 511 are opened to supply high-temperature steam to the installation mold; when the heating is completed, the steam channel 441, the movable mold steam solenoid valve 521 and the fixed mold steam solenoid valve 511 are closed, and at the same time the drainage channel 83, the movable mold steam solenoid valve 521 and the fixed mold steam solenoid valve 511 are opened, the air inlet valve 41 is opened to connect the mold with the atmosphere, the water inlet valve 42 is opened to spray cooling water into the external cooling water mold, and the cooling water is discharged through the drainage channel 471 and the fixed mold drainage pipe 61 via the drainage main pipe 6, and the high-temperature drainage is quickly cooled by the cooling circulation mechanism and recycled. After the cooling is completed, the air inlet valve 41 and the water inlet valve 42 are closed, the mold is opened, and the material is ejected to take out the finished product; the pipeline distribution structure of the sole molding machine is simple and compact during the whole process. The invention replaces the original hose and solves the problems of the hose being constantly stretched and folded during the continuous opening and closing of the movable mold frame, and being easily damaged, leaking, aging, and fragile under the pressure and temperature of high-temperature steam. The steam socket 44 and the drainage interface 34 respectively fixed on the fixed mold frame 3 and the steam socket 44 and the drainage socket 47 provided on the movable mold frame 4 realize steam input and cooling water discharge in a sealed state, solving the problem of large hose loss. The locking mechanism is provided on the upper and lower sides of the fixed mold frame 3 and the movable mold frame 4, so that the locking hook 43 of the hook-shaped structure is locked by the locking module 73 after being inserted into the water inlet valve 321, and the locking module 73 is placed in the module through hole 322, so that the product between the fixed mold frame 3 and the movable mold frame 4 will not be loosened during molding and expansion, and the locking mechanism with the same driving source can efficiently complete locking and unlocking, thereby improving the locking efficiency.

Claims

1. A sole forming machine, comprising a frame, a material distribution tank, a fixed die frame and a movable die frame correspondingly arranged on the frame, a hydraulic drive mechanism for controlling the movable die frame to move closer to or away from the fixed die frame, and a steam main pipe and a drainage main pipe arranged on the frame, wherein the movable die frame is provided with an air inlet valve and a water inlet valve, characterized in that : The steam main pipe conveys steam to the given mold frame and the movable mold frame through the steam conveying mechanism, and the drainage main pipe drains water from the given mold frame and the movable mold frame through the drainage mechanism. The upper and lower ends of the fixed mold frame and the movable mold frame are provided with a locking mechanism for locking or unlocking the fixed mold frame and the movable mold frame. The material distribution tank includes a tank body, a feed pipe arranged at the upper end of the tank body and a plurality of discharge joints arranged at the lower end of the tank body. The discharge joints are connected to the feed port on the fixed mold frame through a material gun. A pressurization interface for inputting compressed air into the tank body is provided on the top of the tank body. A partition plate is provided inside the tank body to divide the inside of the tank body into two independent and closed chambers. The chamber at the end of the partition plate facing the pressurization interface is a storage chamber, and the chamber at the end facing the discharge joint is a feeding chamber. There are several material drop holes, and the dividing plate is provided with a dividing plate against each other, and the dividing plate is provided with several material drop holes corresponding to the material drop holes, and a material drop center axis is provided in the center of the dividing plate, one end of the material drop center axis is connected to the material drop plate, and the other end is provided with a material drop drive mechanism after passing through the tank body, and the material drop drive mechanism drives the material drop plate to rotate on the dividing plate, thereby making the material drop hole and the material drop hole conductive or disconnected, and a return pipe is provided at the bottom of the tank body, one end of the return pipe passes through the tank body and is connected to the feeding chamber, and the other end passes through the tank body and is connected to the storage chamber, a first return pump is provided on the return pipe to transport the foaming material in the feeding chamber to the storage chamber, a return chamber is provided on the return pipe, a second return pump is provided between the return chamber and the feeding chamber, and the return chamber The cylinder pressure bar is connected with the cylinder pressure regulating device, and the cylinder pressure regulating device is connected with the cylinder pressure regulating device, and the cylinder pressure regulating device is connected with the cylinder pressure regulating device, and the cylinder pressure regulating device is connected with the cylinder pressure regulating device, and the cylinder pressure regulating device is connected with the cylinder pressure regulating device, and the cylinder pressure regulating device is connected with the cylinder pressure regulating device, One end of the tightening spring is against the bottom of the tank body, and the other end is against the material dispensing swing arm. A storage sensor for detecting the amount of foaming material in the storage chamber is provided at the visual window. A feed pump for feeding the material into the storage chamber is provided on the feed pipe. The feed pump is electrically connected to the storage sensor. The clamping mechanism includes a plurality of clamping hooks arranged on the movable mold frame, a plurality of clamping seats arranged on the fixed mold frame corresponding to the clamping hooks, a clamping rod passing through the clamping seat, and a clamping drive source for driving the clamping rod to move in the clamping seat. The clamping seats are each provided with a clamping groove corresponding to the clamping hooks. A locking module is provided on one side of the clamping rod corresponding to the clamping seat. A module through hole for the locking module to pass through is provided on the clamping seat. The clamping hook is provided with a locking groove adapted to the locking module.When the fixed mold frame and the movable mold frame are closed by the hydraulic drive mechanism, the clamping hooks are inserted into the corresponding clamping grooves, and the clamping drive source drives the clamping rod to move, so that the locking module penetrates into the locking groove and thus restricts the clamping hooks in the clamping groove. The locking modules are provided with outwardly protruding limit platforms, and the clamping hooks are provided with locking hooks corresponding to the limit platforms. A hook groove for the limit platform to penetrate is formed between the locking hooks and the clamping hooks, and the hook groove is conductive with the locking groove. The clamping seat is provided with a limiting through hole for the limit platform to pass through. When the locking module is inserted into the locking groove, the limit platform is also penetrated into the hook groove and abuts against the inner wall of the locking hook.

2. A sole forming machine according to claim 1, characterized in that: The locking rod includes at least two threaded connecting rods, and the locking modules are each provided with a locking sleeve threadedly connected to the threaded connecting rod. The locking base is provided with a sleeve through hole for the locking sleeve to pass through. The threaded connecting rod is provided with a locking nut at a position corresponding to the locking sleeve. The locking nut is threadedly connected to the threaded connecting rod and abuts against the locking sleeve. A locking sensor is provided at one end of the locking base away from the locking drive source, and the locking sensor is electrically connected to the locking drive source.

3. The sole forming machine according to claim 1, characterized in that: The steam delivery mechanism includes a steam interface and a steam socket respectively arranged on the upper parts of the fixed mold frame and the movable mold frame and correspondingly engaged with each other, the steam socket being communicated with the inner cavity of the movable mold frame, the steam main pipe being connected to the steam interface and delivering steam into the movable mold frame through the steam socket, and one end of the movable mold frame corresponding to the steam socket is provided with a steam on-off component for controlling the connection or disconnection of the steam socket and the steam interface, a fixed mold steam distribution pipe and a movable mold steam distribution pipe respectively connected to the steam main pipe are installed on the upper part of the fixed mold frame, one end of the fixed mold steam distribution pipe is connected to the steam main pipe through a fixed mold steam solenoid valve, and the other end penetrates into the fixed mold frame through a number of fixed mold air supply pipes to deliver steam to a given mold frame, one end of the movable mold steam distribution pipe is connected to the steam main pipe through a movable mold steam solenoid valve, and the other end is communicated one-to-one with the steam interface through a movable mold air supply pipe, and an exhaust valve is provided on the movable mold frame corresponding to the steam socket and on the fixed mold steam distribution pipe, and the exhaust valve is communicated with the inner cavity of the movable mold frame.

4. The sole forming machine according to claim 3, characterized in that: The steam on-off assembly includes a steam on-off cylinder arranged at an end of the movable mold frame away from the steam interface and a steam on-off plug arranged at the output end of the steam on-off cylinder. A steam sealing ring is provided in the steam interface for sealing against the outer periphery of the steam socket. A steam channel is provided in the steam socket, one end of which is connected to the steam interface and the other end is connected to the inner cavity of the movable mold frame. The steam on-off cylinder drives the steam on-off plug to seal or open the steam channel.

5. The sole forming machine according to claim 3, characterized in that: The drainage mechanism includes a drainage interface and a drainage socket respectively arranged at the lower part of the fixed mold frame and the movable mold frame and correspondingly engaged with each other, the drainage socket is communicated with the inner cavity of the movable mold frame, and a fixed mold drainage pipe and a movable mold drainage pipe respectively connected to the drainage main pipe are installed at the lower part of the fixed mold frame, one end of the fixed mold drainage pipe is connected to the drainage main pipe through a fixed mold drainage solenoid valve, and the other end is used to drain the given mold frame by penetrating into the interior of the fixed mold frame, one end of the movable mold drainage pipe is connected to the drainage main pipe through a movable mold drainage solenoid valve, and the other end is communicated one-to-one with the drainage interface. When the fixed mold frame and the movable mold frame are clamped by the hydraulic drive mechanism, the steam sockets are inserted into the steam interface, the clamping hooks are inserted into the corresponding clamping grooves, and the drainage sockets are inserted into the drainage interface. One end of the corresponding drainage socket of the movable mold frame is provided with a drainage on-off component for controlling the conduction or disconnection of the drainage socket and the drainage interface.

6. The sole forming machine according to claim 5, characterized in that: The drainage on-off assembly includes a drainage on-off cylinder arranged at one end of the movable mold frame away from the drainage interface and a drainage on-off plug arranged at the output end of the drainage on-off cylinder. A drainage sealing ring is provided in the drainage interface to seal the outer periphery of the drainage socket. A drainage channel is provided in the drainage socket, one end of which is connected to the drainage interface and the other end is connected to the inner cavity of the movable mold frame. The drainage on-off cylinder drives the drainage on-off plug to seal or open the drainage channel.

7. A sole forming machine according to any one of claims 1 to 6, characterized in that: A cooling circulation mechanism is provided at the drainage main corresponding to the rack, and the cooling circulation mechanism includes a water vapor separation box connected to the drainage main, an air extraction box arranged on the upper part of the water vapor separation box and communicated with the water vapor separation box, a vacuum cooling pump is connected above the air extraction box, and a water tank control valve connected to an external water tank is provided on the water vapor separation box.

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