261 results about "Cooling time" patented technology

The invention belongs to the field of production control, and particularly discloses a control method of a thick-wall optical product precision injection molding hot runner system, which comprises the following steps of: acquiring mold geometric data of local thickness distribution in a mold-containing cavity along a melt flowing direction, calculating theoretical cooling time constants of each region by combining material thermophysical parameters, and calculating the cooling time constant of each region; establishing a thickness-cooling rate mapping relation model; predicting the time when the melt reaches each area and the effective cooling time according to an injection time sequence; solving a temperature compensation value of a heating area corresponding to the hot runner by taking the minimum final temperature variance when the key area is ejected as a target; and finally, dynamically applying a compensation value according to a time sequence before the melt arrives, and withdrawing / adjusting after region filling is completed or a pressure maintaining stage is entered. The invention can balance the temperature field of the mold cavity, reduce the refractive index gradient and shrinkage defect, improve the optical performance and yield of the product, and is suitable for precise injection molding of the thick-wall optical product.

The invention discloses a conformal cooling device for die-casting die temperature intelligent control and a regulation and control method. The conformal cooling device comprises a die body, an embedded conformal cooling runner network, a multi-mode temperature sensing array, a partition flow regulation and control valve group, a central cooperative controller and a cooling medium circulation supply unit. Through the combination of shape follow-up runner design and partition dynamic regulation and control, a cooling blind area is effectively eliminated, the surface temperature uniformity of a cavity is remarkably improved, and the cooling time of a hot spot area is shortened, so that the defects of shrinkage cavities, hot cracks and the like are inhibited, and the defect rate of castings is reduced. And under the cooperation of multi-mode sensing and intelligent control, the system response is accelerated, the energy consumption is reduced, the die-casting rhythm is shortened, and the synchronous optimization of the production efficiency and the energy utilization efficiency is realized.

The invention belongs to the technical field of material processing, and discloses a magnesium alloy casting semi-solid injection molding method and application, and the method comprises the following steps: checking and adjusting a semi-solid injection machine, a casting mold and other equipment to be in a normal state, and placing magnesium alloy particles in a designated area of a hopper; putting a long nozzle of the semi-solid injection platform into the center of a mold sprue; setting the temperature of each section of a mold temperature controller, a charging barrel and a nozzle; preserving heat for a period of time after the temperature of the charging barrel reaches a set value, so that the temperature of materials in the charging barrel is uniform; setting the injection rate, the cooling time, the material return distance and the melt pressure of the semi-solid injection machine; and after a release agent is quantitatively sprayed to the mold, a semi-solid injection program is started, and a casting is obtained. The AS41B magnesium alloy particles with good heat resistance are adopted as the raw material, the semi-solid injection molding method is combined, a melting furnace is not needed, only heating to the semi-solid state is needed, the melt temperature is low, energy is saved, the service life of a mold is prolonged, protective gas is not needed, and the manufactured casting is good in mechanical property and high in heat resistance.

The present disclosure relates to a system and method for monitoring an injection molding process which may calculate injection time and packing time by attaching an acceleration sensor to an injection molding mold with bolts and measuring an amplitude change of a vibration signal of a mold during injection molding, detect mold closing and opening signals of the mold using a magnetic hall sensor, and monitor the injection molding process by measuring cycle time and cooling time, thereby simplifying installation and maintenance and reducing installation costs.

The utility model discloses an arc-shaped injection mold for processing a plastic handrail of a treadmill, which relates to the technical field of injection molds and comprises a male mold in sliding connection with a female mold. The male die and the female die are respectively provided with a water cooling device; according to the utility model, after heat exchange, cooling liquid is gathered from the water inlet to the circulation seat and then enters the cold radiator shell, the water channels and the fins are regularly arranged in the cold radiator shell, so that the contact area between the cooling liquid and air is increased, and meanwhile, the fan accelerates air flow, so that heat in the cooling liquid is dissipated out; an efficient water cooling circulation system is matched with a water channel, fins and a fan in the cold row shell, heat in a mold can be quickly dissipated out, the cooling time of the plastic handrail is shortened, the injection molding period is shortened, and the production efficiency is improved. And the production efficiency is improved.

The application discloses a steel bar production line intelligent scheduling system based on artificial intelligence. In the application, the dynamic adaptation problem of multi-specification steel bar mixed production is solved through a virtual-real fusion decision mechanism. In view of the demand of alternate rolling of screw thread steel and bright round steel, the system analyzes order parameters in real time, dynamically optimizes the matching logic of roll gap adjustment sequence and cold bed stepping rhythm, and ensures that the steel bars with different surface characteristics reduce transition waste during process switching. Through equipment health degree prediction and material mechanics simulation, the peak value of the main drive of the rolling mill is automatically reduced and the cooling time is prolonged when high-strength steel bars are rolled, so that the roll peeling or internal cracks of the steel bars caused by stress mutation are avoided. For small batch orders, the system intelligently compresses the shutdown window of die and groove changing, pre-adjusts the process parameters by using the idle gap of the equipment, and significantly reduces the production capacity breakpoint caused by specification switching.

The application provides a cooling device of a cloth bag dust collector and belongs to the technical field of cloth bag dust collectors. The cooling device of the cloth bag dust collector comprises a base and a dust collector body, the dust collector body is fixedly connected to the base, the lower end of the dust collector is provided with an air inlet pipeline, the upper end of the dust collector body is provided with an air outlet pipeline, the base is fixedly connected with a cooling box, the cooling box is provided with a conveying channel, one side of the cooling box is fixedly connected with a gas feeding pipe, the gas feeding pipe is communicated with one end of the conveying channel, the other end of the conveying channel penetrates through the side wall of the cooling box and is communicated with the other end of the air inlet pipeline, and the dust collector body is provided with a sealing assembly capable of sealing the other end of the air inlet pipeline. The application has the advantages that the conveying channel is a multi-section U-shaped pipe, the dust-containing gas has a longer cooling time in the cooling box, and the cooling effect is better; and the cooling air of the cooling fan is mixed with the dust-containing gas through the fan blades, so that the temperature of the dust-containing gas is reduced.

The invention provides a method and device for predicting the crack risk in the preparation process of a nuclear power steel material, and the method comprises the steps: building and training a high-precision crack risk prediction model through the quantification of the interaction of the die casting temperature, the cooling time, the austenite grain size, the precipitate size and the ferrite film thickness; through the trained crack risk prediction model, the crack risk coefficient of the to-be-tested nuclear power steel material can be predicted based on the preparation process parameters and the structural characteristic parameters of the to-be-tested nuclear power steel material, and the process adjustment necessity assessment is carried out according to the crack risk coefficient of the to-be-tested nuclear power steel material. Crack defects are pre-judged in advance, die casting process parameters are optimized, and ingot casting quality is improved.

The utility model relates to the technical field of drying equipment, and discloses a high-weather-resistance drying box for processing optical glass, which comprises a drying box assembly, a drying assembly is arranged in the drying box assembly, a conveying assembly is arranged at the bottom of the drying assembly, a cooling assembly is arranged at the top of the conveying assembly, and a cooling device is arranged at the bottom of the cooling assembly. Automatic feeding and discharging of processed materials are achieved through the conveying assembly, operators are prevented from making direct contact with a high-temperature dry area, safety accidents such as hot air burning are effectively prevented, the heating pipes are evenly distributed in the closed space, separated by the partition plates, of the box body, the heating efficiency is effectively improved, hot air is conveyed to a working area through the annular porous pipeline, and the working efficiency is improved. And through the cooling assembly, air flow in the box body is accelerated, the drying effect is improved, the temperature of a drying area can be rapidly reduced after drying is completed, the cooling time is shortened, and the equipment use efficiency is improved.

The utility model discloses a casting mold with a cooling structure. The casting mold comprises a workbench, a lower mold is installed on the surface of the workbench, an upper mold is attached to the surface of the lower mold, a box body is fixedly connected to the upper portion of the workbench, the casting mold with the cooling structure further comprises a cooling mechanism, and the cooling mechanism is arranged outside the lower mold. And the adjusting mechanism is arranged outside the box body. The casting mold with the cooling structure relates to the technical field of casting molds, achieves accurate adjustment of flow of cooling liquid through cooperation of the cover body, the rotating disc, the sliding block, the blocking block, the driving part and the auxiliary part, and solves the problem that when an existing cooling structure is used for cooling parts in the casting mold, the cooling effect is poor. The problems that due to the fact that the size of a cooling channel in a casting mold is fixed, the cooling time of parts made of different materials is different, the cooling time of the parts is possibly insufficient or too long, and the quality of the parts is affected are solved.

This utility model discloses an auxiliary device for coal quality testing and analysis, including a cooling tank. A placement slot is provided on the side of the cooling tank, and a coal sample placement assembly is movably placed inside the placement slot. A cooling component is provided on the side of the cooling tank, and an exhaust component is provided on the top of the cooling tank. The coal sample placement assembly includes a placement rack, a cover plate, and a positioning component. This utility model achieves faster cooling of the coal sample by setting up a coal sample placement assembly and a cooling component. The coal sample placement assembly is moved by a pull-out mechanism to place the coal sample. The cooling component provides dehumidified air into the cooling tank to accelerate gas flow and simultaneously injects fresh air, allowing the heated air to be discharged from the top exhaust component. This accelerates the cooling of the coal sample by increasing gas flow within the cooling tank, solving the problem in existing technologies where natural cooling after coal drying results in a long cooling time, thus extending the overall coal quality testing time.

The invention provides a welding mechanism for assembling an automobile oil pipe joint, and belongs to the technical field of oil pipe joint welding. Comprising a machine body, a support is installed at the top of the machine body, a lifting support is slidably connected to the end of the support, a servo motor is installed at the top of the lifting support, a hydraulic oil cylinder is installed at the top of the support, an operation table is arranged on the surface of the machine body, and a connector is arranged at the top of the operation table; an oil pipe is arranged below the lifting support. By arranging the oil pipe clamping assembly and the oil pipe welding assembly, oil pipes and oil pipe joints of different sizes are installed and fixed, the adaptability of the welding mechanism is improved, meanwhile, negative pressure wind power absorbs operation smoke dust, the operation environment can be optimized, the cooling time during welding is shortened, and the efficiency is improved; and reciprocating welding improves compactness and strength of weld joints, realizes overlap rate of the weld joints, improves tensile strength of the weld joints and improves quality of the weld joints.

The application discloses a production process of a composite lightning arrester protective cover. The process comprises the following steps: mixing the main runner and the branch runner which are broken after being cut off in advance with new material particles in proportion, feeding into an injection molding machine to melt and form, and obtaining a protective cover with a runner; using an automatic taking and placing mechanism to take the protective cover out of the mold and move it to a cooling station, using an automatic cooling mechanism to forcibly air cool and shape the protective cover, and shortening the cooling time in the mold; then moving to a cutting station, using an automatic cutting mechanism to cut off the main runner and the branch runner at one time, realizing the rapid separation of waste and finished products; finally, clamping an identification sheet and packaging. The process realizes the full-process automation of "waste recycling-injection-taking-cooling-cutting-packaging", not only significantly improves the cooling uniformity and product size precision, avoids deformation and burrs, but also reduces the raw material cost through the recycling of runner waste, and has the advantages of high efficiency, stability and greenness.

The invention discloses an on-line controlled cooling process for a Q345B medium-thick-wall seamless steel pipe. The rolling process comprises the following steps: heating in an annular furnace, punching, continuous rolling, sizing, on-line controlled cooling, cooling in a cooling bed and finishing; the heating system of the annular furnace is limited; the roller way speed is set to be 0.6-1.0 m / s, 16 groups of spraying pipes spray water normally, the total maximum instantaneous flow is 880-900 m / h, the water temperature is 35-40 DEG C, the supercooling time is 38-42 s, the inlet temperature is 950-970 DEG C, the outlet temperature is 520-580 DEG C, and the cooling speed is 9.25-11.25 DEG C / s. According to the on-line controlled cooling process for the Q345B medium-thick-wall seamless steel pipe, the wall thickness of the medium-thick-wall seamless steel pipe is 12-25 mm, off-line heat treatment is replaced with the on-line controlled cooling process, and the mechanical property required by Q345B is achieved.

The invention discloses a hot plate cooling device and substrate heat treatment equipment. The hot plate cooling device is used for reducing the surface temperature of a hot plate and comprises a cooling plate, a heat exchanger and a heat exchanger, the moving mechanism is used for moving the cooling plate; the controller is in communication connection with the moving mechanism; wherein the controller is configured to control the moving mechanism to load the cooling plate to the surface of the hot plate to enable the cooling surface to correspond to the surface of the hot plate so as to reduce the surface temperature of the hot plate to a preset temperature, and then control the moving mechanism to unload the cooling plate from the surface of the hot plate. The effects of shortening the cooling time of the hot plate and improving the working efficiency of the hot plate are achieved.

The utility model belongs to the technical field of sealing strip production, and particularly relates to a noise reduction door and window sound insulation strip manufacturing device which comprises a first installation frame, an extrusion assembly is arranged at the top end of the first installation frame, an air cooling assembly is arranged at the top end of the right side of the first installation frame, and the right side of the first installation frame is fixedly connected with a second installation frame. A conveying belt is arranged on the inner side of the top end of the second mounting frame, a collecting frame is fixedly connected to the inner side of the top end of the second mounting frame, a flow guide box is fixedly connected to the bottom end of the collecting frame, a conveying assembly is arranged at the bottom end of the flow guide box, and a water inlet pipe is arranged at the outer end of the right side of the conveying assembly. According to the sound insulation strip manufacturing device for the noise reduction door and window, air cooling and water cooling are matched with each other, the water cooling can effectively reduce the temperature, improve the cooling efficiency and reduce the temperature difference, and therefore the consistency and quality of products are improved. And meanwhile, cooling time is shortened through rapid cooling, production efficiency is improved, and energy consumption is reduced.

A 3D grafting printing powder bed and part rapid heating and cooling device comprises a powder bed forming cylinder body, a base plate connecting base and a lifting mechanism, the base plate connecting base is arranged in the powder bed forming cylinder body in a liftable mode, and a connecting plate is arranged at the bottom of the base plate connecting base and penetrates out of the bottom of the powder bed forming cylinder body to be connected with the lifting mechanism. The powder bed forming cylinder body and the base plate connecting base are each provided with an interlayer structure, a heating pipe and a cooling pipe are installed in an interlayer, and a plurality of temperature sensors are distributed on the powder bed forming cylinder body and the base plate connecting base. The heating device is simple and reasonable in structure and low in cost, metal powder and grafting components can be rapidly and evenly heated in the 3D grafting printing process, it is guaranteed that thermal stress in the printing process is effectively controlled, cracking of the components is avoided, powder fusion is promoted, printing defects are reduced, and after printing is completed, the printing quality is improved. The device remarkably shortens the cooling time of metal powder and parts through the cooling system, so that the overall printing efficiency is improved.

Conventional 3D printing incorporates the use of axisymmetric nozzles and backpressure to horizontal beads with hemispherical ends. Only a subset of the material in conventional beads contributes to the load path as the hemispheres are considered wasted material. The microstructure of conventional beads promotes longer cooling periods and therefore lower manufacturing throughputs. The present disclosure describes the use of non-axi symmetric nozzles without backpressure to control extrudate flow, which enables extrusion of beads with arbitrary shape and direct control of extrudate flow. The microstructure produced through non-axisymmetric extrusion facilitates a significant heat conduction to peripheries of a printed layer, resulting in rapid cooling behavior, which allows higher manufacturing throughputs and prevention of warping and residual stresses in the extrudate.

The utility model relates to a kind of polycarboxylate water reducing agent rapid cooling device, belong to water reducing agent production equipment technical field. Mainly including support, cooling tank, cooling pipe, circulating water tank, driving motor, stirring assembly, refrigeration module, temperature measuring probe and display module;Spiral cooling pipe and annular cooling pipe are equipped in cooling tank, enhance heat exchange efficiency, cooling pipe inner turbulence protrusion and outer wall radiating fin further promote cooling effect, stirring assembly promotes liquid uniform cooling, temperature measuring probe real-time monitoring temperature and output through display module, circulating water tank built-in refrigeration module, reduce energy consumption, significantly improve cooling efficiency and process stability, solve the problem of long cooling time in prior art, low heat exchange efficiency and lack of temperature detection, improve product quality and production efficiency.

The application discloses a heat-resistant tool for fixing a thermocouple and a temperature measuring method of a shaft furnace. The heat-resistant tool comprises a fixing assembly and prefabricated cement blocks. The fixing assembly comprises a base, a supporting column and a locking structure. The locking structure is fixed above the base through the supporting column. Two prefabricated cement blocks capable of being buckled into a column are fixed in the locking structure. The temperature measuring method of the shaft furnace comprises the following steps: hoisting and feeding the temperature measuring tool and the fixing assembly into the shaft furnace after fixing; fixing the thermocouple by using the locking structure; measuring the temperature; pulling out the thermocouple under high temperature; hoisting out the fixing assembly and the broken prefabricated cement blocks of the heat-resistant tool together with the temperature measuring tool to complete the temperature measurement. The heat-resistant tool for fixing the thermocouple has the advantages of simple structure, convenient operation and reusable fixing assembly. After the temperature measurement is completed, the thermocouple can be directly pulled out under high temperature, and the thermocouple will not be damaged when being pulled out, thereby saving the cooling time and improving the work efficiency.

The invention discloses storage equipment, and belongs to the technical field of refrigeration. The storage equipment comprises an inner container, a cooling plate, an evaporator, a centrifugal fan assembly and a rectification structure. The cooling plate is mounted on the wall surface of the refrigeration chamber; the evaporator is mounted on the cooling plate; the centrifugal fan assembly is installed in the refrigeration chamber, and an air outlet of the centrifugal fan assembly faces the cooling plate. The rectification structure is arranged in the centrifugal fan assembly so as to divide the air outlet into at least two first sub-air outlets distributed in the length direction of the air outlet. According to the storage equipment in which the evaporator utilizes the cooling plate to cool the refrigeration chamber, the centrifugal fan assembly and the rectification structure are arranged in the refrigeration chamber, so that cold air is more quickly and uniformly distributed in the whole refrigeration chamber, the cooling time is shortened, the temperature uniformity is improved, and the refrigeration efficiency is improved. Therefore, air retention on the surface of the joint of the refrigerating chamber and the cooling plate can be reduced, efficient and sufficient heat exchange between hot air in the refrigerating chamber and the cooling plate is achieved, and the possibility of condensation and frosting is reduced.

The application discloses a kind of hot-rolled thin gauge strip and its laminar cooling control method of starting to suit, method includes the following steps: S1, adjust the last stand transition plate height of finishing rolling;S2, control thin gauge strip heating target temperature of furnace;S3, rough rolling is carried out production organization using 1+5 mode, and after finishing rolling is completed, control rolling mill automatic speed reduction;S4, laminar cooling starts to supply water cooling strip by the 50th header.This application controls the speed of hot-rolled production line, equipment precision and laminar cooling time by reasonable control, thereby realizing the control of thin gauge strip laminar cooling starting to suit problem, and the number of rolls of laminar cooling starting to suit defect is greatly reduced by implementing relevant control technology, creating greater economic benefits, and the improvement effect is remarkable.

DEPCT68 Welding methods for the fabrication of a set of at least two steel substrate components. (3,3') which are spot welded together and consist of: first steel substrate (3) which is Press-hardened steel parts are obtained by pressing hardening of steel plates. Coated with an aluminum-based coating; the coating consists of the following percentages: By weight, 7.0 to 9.0% zinc, 1.0 to 10% silicon, 1.0 to 10% magnesium. Up to 3.0% iron, alternative elements were chosen from Pb, Ni, Zr, Hf, Sr, Sb, Pb, Ti, Ca, Mn. Sn, La, Ce, Cr, or Bi; the weight of each element will be less than 0.3%, and impurities will be present. It's unavoidable down to 0.02%, the remaining amount being aluminum, the application of the cycle. A spot connection consisting of: 0. At least three pulses (22,32,42), each of which There is an equal maximum pulse current (Cp), and the pulse duration p for each value is the same and is set. The equal cooling time is set from 20 to 60 milliseconds, and the cooling time is set from 30 to 50 milliseconds. This separates each pulse from the next;

The invention discloses an optimal design method and system for an injection mold, and relates to the technical field of injection mold optimizing.By constructing a cooling time statistical model of a qualified forming period, aggregation statistics is conducted on cooling lag time of all mold cavities and point locations in qualified samples, representative cooling time length distribution is established, and the optimal design of the injection mold is achieved. And a data basis is provided for cooling control. Through the output value of the cooling window function, the cooling process can be divided into a reasonable interval and an unreasonable interval, and traceable labels are formed in data recording and quality tracing. Meanwhile, in combination with the deviation degree of the upper bound and the lower bound, a cooling abnormal degree grading mechanism can be extended, and support is provided for intelligent adjustment strategy selection. An abnormal cooling lag point is identified through the effective cooling attenuation stage starting point Teff; through the normalized WS data, the abnormal deviation trend point of the temperature recovery curve can be visually found, and an accurate cooling deviation input basis is provided for a subsequent module, so that differential cooling control suggestions are supported.

The invention discloses a manufacturing method of a shape follow-up waterway of a uniform cooling car lamp mold for improving cooling efficiency. The method belongs to the technical field of automobile lamp mold design and manufacturing and comprises the operation steps that according to mold characteristics, a common shape follow-up waterway arrangement mode is combined, and multiple parallel and grid composite waterways are adopted; compared with a traditional waterway, UG is used for modeling, and three-dimensional design software UG is used for constructing a waterway integrated and optimized mold model and a model adopting the traditional waterway; the temperature difference and the cooling time are analyzed through ANSYS Fluent, and layout parameters are optimized; local stress is analyzed, and the wall thickness is optimized; and verifying the printing mold of the SLM metal additive manufacturing process. According to the method, through systematic simulation driving design and optimization of waterway layout and geometric parameters, on the premise that the structural strength of the mold is guaranteed, cooling uniformity and efficiency are maximized, and preparation of the high-quality mold is completed through the advanced additive manufacturing technology.

To efficiently manufacture thick steel plates with a high yield. [Solution] The method for determining the number of leveling cycles includes the steps of: calculating the rolling time, which is the time it takes for the trailing steel sheet to be processed in the rolling mill after the trailing steel sheet reaches the hot straightening equipment; calculating the accelerated cooling time, which is the time it takes for the trailing steel sheet to be processed in the accelerated cooling device after the trailing steel sheet reaches the hot straightening equipment; calculating the arrival time, which is the time it takes for the trailing steel sheet to reach the hot straightening equipment from the present time, based on the rolling time and the accelerated cooling time; and determining the number of leveling cycles in the hot straightening equipment so as to maximize the number of leveling cycles performed in the hot straightening equipment, within a range where the leveling time is shorter than the arrival time.

The utility model provides a cooling device for PU foaming wheel manufacturing, and relates to the field of PU foaming wheel production equipment, the cooling device comprises a shell mechanism, the main body of the shell mechanism is of a structure with a one-way opening at the front end, a partition plate assembly is fixedly connected in the opening at the front end of the shell mechanism, and two through holes are formed in the partition plate assembly; four filter screen assemblies are fixedly connected into the through hole and continuously operate under the driving of the servo motor A through the conveying assembly, so that the foaming wheel can pass through the cooling cavity without pause, the limitation of traditional limiting cooling is broken through, the single cooling time is shortened by about%, and meanwhile, due to forced convection heat dissipation formed by the servo motor B and the fan blade assembly, the cooling efficiency is greatly improved. And in cooperation with circulating filtration of the filter screen assembly, a stable low-temperature airflow environment is kept in the cooling cavity, compared with natural cooling, the efficiency is remarkably improved, the overall production period is remarkably shortened, and the requirement for batch production is met.

The utility model relates to the technical field of heating reaction equipment, and provides a rotary reaction furnace which comprises a rack, a high-temperature furnace, a rotary cylinder, an inner cylinder and a driving assembly, the two ends of the rotating cylinder are connected with a detachable air inlet sealing cylinder and a detachable air outlet sealing cylinder respectively, and dynamic sealing is achieved through a sealing structure. The inner cylinder is coaxially arranged in the rotating cylinder to form an independent cavity, a cooling gas channel is arranged in the rotating cylinder, and rapid cooling is achieved through forced circulation. Oxygen is emptied between the rotating cylinder and the inner cylinder through a vacuum pump, protective gas is introduced to form a positive pressure barrier, and the explosion risk is eradicated. According to the utility model, through the modular design, the inner cylinder and the sealing cylinder can be quickly disassembled, and the maintenance cost is reduced; multiple safety protection devices effectively improve the safety of the equipment; the cooling channel design obviously shortens the cooling time and improves the equipment turnover rate; the device is suitable for preparing powder materials such as carbon nanotubes, and has the advantages of being compact in structure, convenient to operate, high in safety and the like.

The present application relates to the technical field of die casting cooling, and discloses a die casting machine cooling device, which comprises a shell and a rack arranged in the shell, a die casting mold is slidably connected in the rack, the die casting mold comprises a fixed mold and a movable mold, two ends of the rack are slidably connected with sliding plates, one end of the fixed mold away from the movable mold is fixedly connected with a first supporting rod, the first supporting rod is fixedly connected with one of the sliding plates, a first cylinder in a horizontal direction is fixedly connected to one of the sliding plates, an output end of the first cylinder is fixedly connected to one end of the movable mold away from the fixed mold, a cooling cavity is arranged in the rack, a spraying assembly for spraying cooling liquid is arranged in the cooling cavity, the cooling cavity comprises a first cavity and a second cavity, a first driving assembly for controlling the sliding plates to descend and thus controlling the die casting mold to approach the cooling cavity is arranged in the rack, and a second driving assembly for controlling the first cavity and the second cavity in the cooling cavity to approach each other is arranged in the rack. The present application has the effects of reducing the cooling time, improving the cooling efficiency, ensuring and improving the product quality.

This invention discloses a method for controlling the cooling time of a test chamber. The method includes: acquiring a preset initial temperature, a target temperature, and a desired cooling time; determining a total cooling range based on the preset initial temperature and target temperature, and dividing the total cooling range into n target cooling ranges; calculating the opening degree data of the pulse solenoid valve in the test chamber within each target cooling range based on a preset formula, according to the preset initial temperature, target temperature, and target cooling range; and calculating the evaporator fan speed within each target cooling range based on the opening degree data of the pulse solenoid valve, according to the preset formula. Through the technical solution of this invention, the cooling time control of a test chamber equipped with a pulse solenoid valve for nonlinear cooling operation can be achieved, that is, the cooling time of the test chamber is controllable, improving the accuracy of cooling time control during the cooling operation of the test chamber.