Intelligent shell twelve-station hydraulic machine

Abstract

The invention relates to the technical field of hydraulic machines, and discloses an intelligent shell twelve-station hydraulic machine which comprises a main machine, a hydraulic system is arranged on the main machine, the main machine is of a multi-column frame structure, and the main machine comprises a lower cross beam frame and an upper cross beam frame fixed to the top of the lower cross beam frame through a plurality of stand columns. And a workbench is mounted at the top of the lower cross beam frame. According to the twelve-station hydraulic machine for the intelligent shell, multiple forming technologies are integrated on the same equipment, the problem that in the prior art, multiple technologies are dispersed on multiple single pressing machines for manufacturing is solved, and therefore the integration and intelligence of production are greatly improved, the production efficiency is improved, an intelligent production product line is built, and the production cost is reduced. Digitization and intellectualization of a production workshop are achieved, good system rigidity, high precision, long service life and high reliability are achieved, and rapid stretching, bending, forming, shaping and other processes of metal sheets can be achieved.

Description

Technical Field

[0001] The invention relates to the technical field of hydraulic presses, in particular to a hydraulic press with an intelligent housing and twelve working positions. Background Art

[0002] In the existing intelligent shell production lines, high-speed hydraulic presses usually adopt multi-point pressure control technology and proportional servo technology, which have the characteristics of fast speed and high efficiency. They are widely used in stamping production processes in the automotive, home appliance, military and other industries.

[0003] However, the multi-pass forming process of compressor casings in the current market requires multiple presses to be completed separately, which has the following disadvantages: multiple devices are required, and the equipment cost is high; the labor cost is high and the automation efficiency is low; the production economy is not good, and it is difficult to achieve intelligent production. To solve the above problems, the present invention proposes a twelve-station hydraulic press, which integrates multiple forming processes on the same equipment, realizes integrated and intelligent production, and improves production efficiency. Summary of the invention

[0004] 1. Technical issues to be solved

[0005] In view of the shortcomings of the prior art, the present invention provides a hydraulic press with twelve working positions for an intelligent shell. By integrating multiple forming processes on the same equipment, the problem of multiple processes being dispersed on multiple single presses in the prior art is solved, thereby greatly improving the integration and intelligence of production, improving production efficiency, creating an intelligent production product line, and realizing the digitization and intelligence of production workshops, solving the problems of requiring multiple devices and high equipment costs; high labor costs and low automation efficiency; poor production economy and difficulty in realizing intelligent production.

[0006] (II) Technical solution

[0007] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a hydraulic press with 12 working positions of an intelligent housing, comprising a main machine, a hydraulic system is arranged on the main machine, and the main machine adopts a multi-column frame structure, the main machine comprises a lower crossbeam frame and an upper crossbeam frame fixed to the top of the lower crossbeam frame by a plurality of columns, and a workbench is installed on the top of the lower crossbeam frame;

[0008] Twelve sets of master oil cylinders are installed on the top of the upper crossbeam frame, and the ejection ends of the twelve sets of master oil cylinders are all provided with sliders, and the twelve sets of sliders are arranged from left to right respectively, and each set of sliders is controlled by an independent system to realize independent movement;

[0009] The hydraulic system includes an energy conversion module, a hydraulic control module, an auxiliary module and a hydraulic execution module.

[0010] Preferably, each of the twelve groups of sliders is provided with a displacement sensor to detect the displacement of each slider in real time;

[0011] The twelve groups of master oil cylinders are all equipped with pressure sensors.

[0012] Preferably, the workbench is provided with five die lifting devices, and the lifting force of each die lifter at the stretching station is 5TX2, the lifting force of each die lifter at the blanking and shaping station is 5TX3, and a die changing slide rail mechanism is provided on the rear side.

[0013] Preferably, the hydraulic system adopts servo hydraulic technology. When the slider is rapidly descending or stationary, the speed of the servo motor is zero or low speed. During pressurization and return stroke, the speed of the servo motor is determined by the set speed. When maintaining pressure, the servo motor maintains a low speed.

[0014] Preferably, the auxiliary module includes an oil tank fixed to the back of the upper crossbeam frame through a mounting frame, an oil pump motor unit is arranged on the top of the oil tank, a filling pipe is arranged on the oil tank, and a solenoid valve is installed on the filling pipe, a liquid level detection alarm component is arranged inside the oil tank, and a processing component for processing the oil inside the oil tank is arranged on the oil tank.

[0015] Preferably, the liquid level detection alarm assembly includes a floating plate slidably connected to the inside of the oil tank, and a telescopic rod is fixedly connected to the top of the floating plate, and the top of the telescopic rod extends to the top of the oil tank, and a displacement sensor for detecting the extension and retraction of the telescopic rod is installed on the top of the oil tank.

[0016] Preferably, the processing component includes a filter arranged on the outer side of the oil tank and a circulation pump for circulating the oil inside the oil tank to the inside of the filter for circulation filtration, and a pressure sensor is installed on the filter.

[0017] Preferably, the filter comprises a sleeve fixed to the outer side of the oil tank by a bracket, the bottom of the sleeve is open, and a conical cover is threadedly installed at the opening of the bottom of the sleeve, and a filter cartridge is arranged inside the sleeve;

[0018] An annular cleaning block is slidably connected to the inner surface of the sleeve, and a driving cylinder for driving the annular cleaning block up and down is fixedly connected to the top of the sleeve;

[0019] A slag discharge piece is arranged inside the conical cover.

[0020] (III) Beneficial effects

[0021] Compared with the prior art, the present invention provides a hydraulic press with a smart housing and twelve working positions, which has the following beneficial effects:

[0022] 1. The present invention solves the problem in the prior art that multiple processes are dispersed on multiple single presses by integrating multiple forming processes on the same equipment, thereby greatly improving the integration and intelligence of production, improving production efficiency, creating an intelligent production product line, and realizing the digitization and intelligence of the production workshop. It has good system rigidity and high precision, high life, and high reliability, and can realize the rapid stretching, bending, forming, shaping and other processes of metal sheet parts.

[0023] 2. The present invention uses a liquid level detection alarm component designed to understand the oil situation inside the oil tank in real time, and has a real-time automatic detection function. Through the setting of a circulation pump in the processing component, the oil inside the oil tank 8 is circulated and processed. By installing a filter on the circulation route, the oil can be circulated and filtered to ensure the quality of the oil, thereby solving the problem that during the operation of the hydraulic system, the hydraulic oil will inevitably be mixed with various impurities, such as metal chips, dust, welding slag, iron filings, oxides, etc.; if these impurities enter the hydraulic system, they may block the gaps or small holes of the hydraulic components, resulting in inflexible movement of the hydraulic components, reduced efficiency, and even causing malfunctions. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a structural schematic diagram of a hydraulic press with twelve working positions of an intelligent housing according to the present invention;

[0025] Figure 2 For the present invention Figure 1 The rear view of the structure of the hydraulic press with twelve positions in the intelligent housing;

[0026] Figure 3 For the present invention Figure 2 The structural diagram of the auxiliary module;

[0027] Figure 4 For the present invention Figure 3 A partial cross-sectional view of the middle fuel tank;

[0028] Figure 5 For the present invention Figure 4 A schematic diagram of the structure of the middle sleeve;

[0029] Figure 6 For the present invention Figure 5 A schematic cross-sectional view of the middle sleeve;

[0030] Figure 7 For the present invention Figure 6 Schematic diagram of the combination of the middle filter cartridge and the slag discharge part;

[0031] Figure 8 For the present invention Figure 7 Schematic cross section of the mid-conical cover.

[0032] In the figure: 1. Lower beam frame; 2. Column; 3. Upper beam frame; 4. Workbench; 5. Main oil cylinder; 6. Slider; 7. Mounting frame; 8. Oil tank; 9. Oil pump motor unit; 10. Injection pipe;

[0033] 11. Liquid level detection alarm component; 111. Floating plate; 112. Telescopic rod; 113. Displacement sensor;

[0034] 12. Processing assembly; 121. Circulation pump; 122. Sleeve; 123. Conical cover; 124. Filter cartridge; 125. Annular cleaning block; 126. Driving cylinder;

[0035] 127, slag discharge part; 1271, sewage pipe; 1272, cone cover; 1273, valve plate; 1274, T-type guide rod; 1275, touch plate; 1276, spring. DETAILED DESCRIPTION

[0036] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0037] Embodiment 1:

[0038] Refer to the attached Figures 1 to 8 A hydraulic press with 12 working positions of an intelligent housing includes a main machine, a hydraulic system is arranged on the main machine, and the main machine adopts a multi-column frame structure, the main machine includes a lower crossbeam frame 1 and an upper crossbeam frame 3 fixed to the top of the lower crossbeam frame 1 through a plurality of columns 2, and a workbench 4 is installed on the top of the lower crossbeam frame 1;

[0039] Twelve sets of master cylinders 5 are installed on the top of the upper crossbeam frame 3, and the ejection ends of the twelve sets of master cylinders 5 are all provided with sliders 6, and the twelve sets of sliders 6 are arranged from left to right, respectively, and each set of sliders is controlled by an independent system to realize independent movement;

[0040] The hydraulic system includes an energy conversion module, a hydraulic control module, an auxiliary module and a hydraulic execution module;

[0041] The equipment has good system rigidity, high precision, high life and high reliability, and can realize the processes of stretching, bending, forming and shaping of metal sheet parts;

[0042] This machine adopts split frame tie rod type hydraulic press, which is mainly suitable for the stretching, bending, flanging, trimming, punching, shaping of metal sheets, as well as cold forming processes such as stretching, cutting and punching in the same process, and has mold debugging and production functions;

[0043] The pressure grading technology is used to achieve rapid forming, with a forming speed of 30-60mm / s.

[0044] A fast cylinder lowering circuit is set up, and the fast lowering speed reaches more than 300mm / s. A proportional servo system is used to increase the fast lowering speed, reduce the buffer distance, and shorten the time for the upper mold to approach quickly.

[0045] Set up a quick pressure relief circuit to reduce pressure relief time and improve efficiency.

[0046] In order to improve the hydraulic press's ability to resist off-center loading, this hydraulic press is equipped with an electro-hydraulic servo control system.

[0047] 1700-ton 12-station hydraulic press can integrate multiple processes to complete production automatically and improve efficiency;

[0048] This hydraulic press adopts a servo hydraulic press. When the slider 6 is rapidly descending or stationary, the servo motor speed is zero or a very low speed; when the slider 6 is pressurized and returned, the servo motor speed is determined by the set speed; when the slider 6 is maintaining pressure, the servo motor speed is maintained at a relatively low speed;

[0049] The hydraulic control module adopts an advanced cartridge valve integrated system, and the system is equipped with overload protection and hydraulic support insurance circuits. Pressure detection points are set at key parts of the hydraulic system, through which hydraulic system faults can be quickly diagnosed and the operating status of the hydraulic system can be monitored.

[0050] The pressure control of the slider 6 adopts a proportional pressure control system, and can realize digital display and digital control. The pressure measuring element adopts a pressure sensor, and the pressure regulating control element adopts a proportional relief valve to realize closed-loop control. The pressure is displayed through a color touch screen and can be set directly on the touch screen. The proportional pressure control system can realize stepless adjustment of the slider pressure within the range of 15%-100% of the nominal pressure; the top cylinder pressure is adjusted within the range of 15%-100% of the nominal pressure. The pressure display accuracy reaches 0.1Mpa, and the pressure holding time can be preset in the range of 0 to 999 seconds;

[0051] Each of the twelve groups of sliders 6 is provided with a displacement sensor to detect the displacement of each slider 6 in real time;

[0052] The slider 6 is composed of a slider conductor, multiple slider bodies, and a guide device. The multiple sliders 6 are guided by push-pull screw-type 45° "X"-shaped inclined guide rails at the four corners, which are adjustable on both sides. The guide is easy to adjust, has high adjustment accuracy, good rigidity, is not prone to accuracy deviation after adjustment, has good accuracy retention, and strong anti-eccentric load capability, thereby ensuring the operating accuracy of the slider 6 and being able to withstand larger eccentric loads.

[0053] The upper plane of the slider 6 is connected to the main cylinder assembly by bolts, and the piston rod and the slider 6 are rigidly connected. The up and down movement of the slider 6 is achieved by the oil inlet and outlet of the cylinder;

[0054] The first four cylinders are a closed frame structure, and the rear eight cylinders are a closed frame structure, in which the middle column is an empty station; the nominal force of the first four cylinders is 900 tons, and the nominal force of the rear eight cylinders is 800 tons;

[0055] A plurality of ejector cylinders are located in the lower beam and are used for edge pressing during the stretching process. The ejector cylinders have an ejection function, and the ejection starting point can be selectively controlled by the stroke of the slider 6.

[0056] The working pressure of the ejector cylinder can be set and displayed on the touch screen with a display accuracy of ±1 ton. The ejector cylinder is equipped with a pressure sensor, a proportional pressure valve (4 in front) and a manual (8 in the back) to control the blanking pressure. The blanking force value that changes with the stroke of the slider 6 during the stretching process can be set in sections and can be adjusted steplessly within the range of 15%-100% of the nominal pressure.

[0057] The ejector cylinder (including the empty station cylinder) adopts follow-up control. When the slider 6 rises, the ejector cylinder also rises;

[0058] The twelve groups of master oil cylinders 5 are all equipped with pressure sensors, and are equipped with proportional pressure valves (4 in front) and manual (8 in the back) to control the pressure of the edge pressing, which can be adjusted steplessly within the range of 15%-100% of the nominal pressure;

[0059] Main cylinder 5: The main tonnage of the hydraulic press is achieved by 12 fast piston cylinders, which are fixed on the upper crossbeam frame 3 by nuts.

[0060] The workbench 4 is provided with five die lifting devices, and the lifting force of each die lifter at the stretching station is 5TX2, and the lifting force of each die lifter at the blanking and shaping station is 5TX3, and a die changing slide rail mechanism is provided at the rear side;

[0061] The workbench is equipped with a die lifter, and 5 die lifters are set. The lifting force of each die lifter at the stretching station is 5TX2, and the lifting force of each die lifter at the blanking and shaping station is 5TX3. The rear side is equipped with a quick die change slide mechanism and 4 guide rail rear brackets, which can electrically pull 5T / 9T heavy molds. The length of the guide rail rear bracket is 3.5 meters and docked with the die lifter. The upper mold clamp is handheld: 225-ton upper molds are 4 tons / 4 each, 100-ton upper molds are 4 tons / 4 each, and the lower molds are 6 tons / 6 at the stretching station, and 8 at the blanking and shaping stations.

[0062] The hydraulic system adopts servo hydraulic technology. When the slider 6 is rapidly descending or stationary, the speed of the servo motor is zero or low speed. When pressurizing and returning, the speed of the servo motor is determined by the set speed. When maintaining pressure, the servo motor maintains a low speed.

[0063] The hydraulic system is composed of energy conversion module (oil pump), hydraulic control module (including integrated valve block and related control valves, etc.), auxiliary module and hydraulic accessories (such as oil filter, flange, joint, pipeline, etc.), hydraulic actuator module (oil cylinder) and other components. With the help of electrical system control, various required actions can be completed. The hydraulic system of the same pressure cylinder of the multi-station hydraulic press is as similar as possible and can be interchanged to facilitate spare parts;

[0064] Refer to the attached Figures 2 to 8 The auxiliary module includes an oil tank 8 fixed to the back of the upper crossbeam frame 3 through a mounting frame 7, an oil pump motor unit 9 is arranged on the top of the oil tank 8, a filling pipe 10 is arranged on the oil tank 8, and a solenoid valve is installed on the filling pipe 10, a liquid level detection alarm component 11 is arranged inside the oil tank 8, and a processing component 12 for processing the oil inside the oil tank 8 is arranged on the oil tank 8;

[0065] The main oil pump and cooling circulation oil pump are installed in an inserted manner to reduce noise and extend the service life of the oil pump. The motor groups 9 of each oil pump are neatly and reasonably arranged on the upper plane of the oil tank 8. The main oil pump adopts a servo motor to drive a double quantitative pump to reduce installed power and use cost.

[0066] The oil tank 8 is arranged at the rear of the upper beam to provide power for the main oil cylinder 5 of the equipment. The oil tank 8 is a steel plate welded structure, the bottom of the oil tank 8 is slightly tilted, and anti-rust treatment is performed after welding. The upper plane is installed with air filters, temperature measuring thermal resistors, etc.

[0067] Through the setting of the liquid level detection alarm component 11, the liquid level alarm control mode is as follows: the liquid level alarm is divided into two situations: the liquid level exceeds the normal working level and the liquid level is too low; when the liquid level exceeds the normal working level, the three-color yellow light is on, and the oil tank 8 should be refilled with oil to the normal working level; when the liquid level is too low, the three-color red light is on, and the press stops working; at this time, the oil tank 8 must be refilled with oil to the normal working level before the machine can start working;

[0068] The oil circulation filter consists of an independent oil circulation pump and a filter. The filter is equipped with a blockage alarm and a signaling device. The alarm information is displayed to remind the operator to replace the filter element. The advantage of this device is that the system is independent of the main system of the press and can be operated independently to clean the oil. The oil circulation pump 121 and the cooling pump share a set of oil pump motor group 9.

[0069] Refer to the attached Figures 4 to 8 The processing assembly 12 includes a filter disposed on the outer side of the oil tank 8 and a circulation pump 121 for circulating the oil in the oil tank 8 to the inside of the filter for circulation filtration, and a pressure sensor is installed on the filter;

[0070] The circulating pump 121 is used to circulate the oil in the oil tank 8. By installing a filter on the circulation route, the oil can be circulated and filtered to ensure the quality of the oil.

[0071] It solves the problem that during the operation of the hydraulic system, the hydraulic oil will inevitably be mixed with various impurities, such as metal chips, dust, welding slag, iron filings, oxides, etc.; if these impurities enter the hydraulic system, they may clog the gaps or small holes of the hydraulic components, causing the hydraulic components to be inflexible, reduce efficiency, and even cause malfunctions.

[0072] Refer to the attached Figures 4 to 8 The filter includes a sleeve 122 fixed to the outer side of the oil tank 8 by a bracket, the bottom of the sleeve 122 is open, and a conical cover 123 is threadedly installed at the bottom opening of the sleeve 122, and a filter cartridge 124 is arranged inside the sleeve 122;

[0073] The bottom of the sleeve 122 is open, and a conical cover 123 is threadedly installed at the opening. The conical cover 123 is easy to disassemble and assemble, so that the filter interior can be self-cleaned.

[0074] An annular cleaning block 125 is slidably connected to the inner surface of the sleeve 122, and a driving cylinder 126 for driving the annular cleaning block 125 up and down is fixedly connected to the top of the sleeve 122;

[0075] The driving cylinder 126 is connected to an external power source and a control switch, and is used to drive the annular cleaning block 125 up and down. Then, through the close fit between the annular cleaning block 125 and the outer surface of the filter cartridge 124, the filter residue on the outer surface of the filter cartridge 124 can be removed from top to bottom, forming a filter residue treatment process, thereby enhancing the filtering effect of subsequent filters.

[0076] A slag discharge member 127 is disposed inside the conical cover 123 .

[0077] The slag discharge member 127 is provided to discharge the filter residue removed by the annular removal block 125, thereby preventing the filter residue from being mixed with the newly-entered oil and affecting subsequent processing.

[0078] Embodiment 2: Based on embodiment 1, the difference is that;

[0079] Refer to the attached Figure 4 The liquid level detection alarm component 11 includes a floating plate 111 slidably connected to the inside of the oil tank 8, and a telescopic rod 112 is fixedly connected to the top of the floating plate 111, and the top of the telescopic rod 112 extends to the top of the oil tank 8. A displacement sensor 113 for detecting the telescopic condition of the telescopic rod 112 is installed on the top of the oil tank 8;

[0080] By floating the floating plate 111 above the oil in the oil tank 8, the telescopic rod 112 can be driven to telescope up and down by the increase or decrease of the oil level. The displacement sensor 113 is provided to detect the telescopic condition of the telescopic rod 112, so that the oil condition in the oil tank 8 can be understood in real time, and the function of real-time automatic detection can be realized.

[0081] Embodiment 3: Based on embodiment 1, the difference is that;

[0082] Refer to the attached Figures 6 to 8 The slag discharge member 127 includes a sewage pipe 1271 fixedly connected to the bottom of the conical cover 123, a switch valve is installed at the bottom of the sewage pipe 1271, a conical cover 1272 is fixedly connected to the inside of the conical cover 123, and the sewage pipe 1271 is connected to the inside of the conical cover 1272, a valve plate 1273 is arranged inside the conical cover 1272, and a raised edge is arranged inside the conical cover 1272, and the inside of the conical cover 1272 is fixedly connected to the bottom of the filter cartridge 124 through a support rod;

[0083] The sewage pipe 1271 is provided to discharge the filter residue after treatment inside the filter, and the switch valve is used to control the bottom end of the sewage pipe 1271 to achieve the subsequent timed cleaning work. The valve plate 1273 is attached to the raised edge to divide the internal space of the conical cover 1272 into two spaces, so as to facilitate the temporary storage of the filter residue through the next space.

[0084] A T-shaped guide rod 1274 is fixedly connected to the bottom of the filter cartridge 124, a touch plate 1275 is slidably connected to the outer surface of the T-shaped guide rod 1274, and the bottom of the touch plate 1275 is fixedly connected to the top of the valve plate 1273 through a connecting rod, and a spring 1276 for pressing the touch plate 1275 upward is fixedly connected to the bottom end of the T-shaped guide rod 1274;

[0085] A T-shaped guide rod 1274 is fixedly connected to the bottom of the filter cartridge 124, and a touch plate 1275 is slidably provided on the T-shaped guide rod 1274, so that when the annular cleaning block 125 moves downward to the extreme position, the touch plate 1275 can be squeezed downward to make the valve plate 1273 move downward. The downward movement of the valve plate 1273 can connect the upper and lower parts of the conical cover 1272, so that the filter residue cleared downward by the annular cleaning block 125 can be squeezed into the interior of the drain pipe 1271 to form a temporary storage operation, and the valve plate 1273 can be closed again by cooperating with the downward resetting of the annular cleaning block 125 to form a partition effect, thereby preventing the filter residue from re-entering the filter and causing repeated pollution.

[0086] It should be noted that the term "comprises" or any other variation thereof is intended to cover non-exclusive inclusion, so that a process, method, article, or device that includes a series of elements includes not only those elements, but also includes other elements that are not explicitly listed, or also includes elements inherent to such process, method, article, or device. In the absence of further restrictions, an element defined by the sentence "comprises a ..." does not exclude the presence of other identical elements in the process, method, article, or device that includes the element.

[0087] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A hydraulic press with 12 working positions in an intelligent housing, comprising a main machine, characterized in that: The main machine is provided with a hydraulic system, and the main machine adopts a multi-column frame structure, the main machine comprises a lower crossbeam frame (1) and an upper crossbeam frame (3) fixed to the top of the lower crossbeam frame (1) through a plurality of columns (2), and a workbench (4) is installed on the top of the lower crossbeam frame (1); Twelve groups of master oil cylinders (5) are installed on the top of the upper crossbeam frame (3), and the ejection ends of the twelve groups of master oil cylinders (5) are all provided with sliders (6), and the twelve groups of sliders (6) are arranged from left to right, respectively, and each group of sliders (6) adopts an independent system control to realize independent movement. The hydraulic system includes an energy conversion module, a hydraulic control module, an auxiliary module and a hydraulic execution module.

2. The intelligent housing twelve-station hydraulic press according to claim 1, characterized in that: Each of the twelve groups of sliders (6) is provided with a displacement sensor to detect the displacement of each slider (6) in real time; The twelve groups of master oil cylinders (5) are all equipped with pressure sensors.

3. The intelligent housing twelve-station hydraulic press according to claim 1, characterized in that: The workbench (4) is provided with five die lifting devices, and the lifting force of each die lifter at the stretching station is 5TX2, and the lifting force of each die lifter at the punching and shaping station is 5TX3. A die changing slide rail mechanism is provided at the rear side.

4. The intelligent housing twelve-station hydraulic press according to claim 1, characterized in that: The hydraulic system adopts servo hydraulic technology. When the slider (6) is rapidly descending or stationary, the speed of the servo motor is zero or low speed. When pressurizing and returning, the speed of the servo motor is determined by the set speed. When maintaining pressure, the servo motor maintains a low speed.

5. The intelligent housing twelve-station hydraulic press according to claim 1, characterized in that: The auxiliary module comprises an oil tank (8) fixed to the back of the upper crossbeam frame (3) through a mounting frame (7); an oil pump motor unit (9) is arranged on the top of the oil tank (8); a filling pipe (10) is arranged on the oil tank (8), and a solenoid valve is installed on the filling pipe (10); a liquid level detection alarm component (11) is arranged inside the oil tank (8); and a processing component (12) for processing the oil inside the oil tank (8) is arranged on the oil tank (8).

6. The intelligent housing twelve-station hydraulic press according to claim 5, characterized in that: The liquid level detection alarm component (11) comprises a floating plate (111) slidably connected to the inside of the oil tank (8), a telescopic rod (112) being fixedly connected to the top of the floating plate (111), and a top end of the telescopic rod (112) extending to the top of the oil tank (8), and a displacement sensor (113) for detecting the telescopic condition of the telescopic rod (112) being installed on the top of the oil tank (8).

7. The intelligent housing twelve-station hydraulic press according to claim 5, characterized in that: The processing assembly (12) comprises a filter arranged on the outer side of the oil tank (8) and a circulation pump (121) for circulating the oil in the oil tank (8) to the inside of the filter for circulation filtration, and a pressure sensor is installed on the filter.

8. The intelligent housing twelve-station hydraulic press according to claim 7, characterized in that: The filter comprises a sleeve (122) fixed to the outer side of the oil tank (8) through a bracket, the bottom of the sleeve (122) is open, and a conical cover (123) is threadedly installed at the bottom opening of the sleeve (122), and a filter cartridge (124) is arranged inside the sleeve (122); An annular cleaning block (125) is slidably connected to the inner surface of the sleeve (122), and a driving cylinder (126) for driving the annular cleaning block (125) up and down is fixedly connected to the top of the sleeve (122); A slag discharge member (127) is disposed inside the conical cover (123).

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