CN110632115B - Automatic static heat-resisting tester - Google Patents
Automatic static heat-resisting tester Download PDFInfo
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- CN110632115B CN110632115B CN201911062129.4A CN201911062129A CN110632115B CN 110632115 B CN110632115 B CN 110632115B CN 201911062129 A CN201911062129 A CN 201911062129A CN 110632115 B CN110632115 B CN 110632115B
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Abstract
The invention discloses an automatic static heat-resisting tester, which comprises a supporting module, a control module and a control panel, wherein the supporting module is arranged on the supporting module; the control module comprises a controller, a blast motor, a stepping motor, a heating ring and a timer, wherein the blast motor and the heating ring are arranged on the side wall of the box body; the control panel comprises a temperature display area, a key setting area and a time display area, and the temperature sensor is used for testing the temperature of the sample; the key setting area is connected with the control module. The automatic feeding and discharging device has the advantages that the automatic feeding and automatic discharging functions are arranged, the temperature in the box is stable, the airflow guide frame guides the airflow direction, and the airflow in the box is stable and uniform, so that the test result is continuous, the comparison test is convenient, and the accuracy is higher.
Description
Technical Field
The invention relates to the technical field of test equipment, in particular to an automatic static heat-resisting tester.
Background
During the processing or reprocessing of the plastic material, the plastic material is processed in an extruder or an internal mixer, the temperature of the plastic material is processed at 120-180 ℃ or higher, the plastic material base material is generally resin, the decomposition or other problems can be caused by high temperature, and the color change of the colored product can be caused (for example, the PVC modified material is mixed and stirred at high temperature, the surface temperature of the PVC modified material is usually about 120 ℃, the internal temperature of the PVC modified material is above 180 ℃, before the next process, the powder material at the front section can be stored overtime due to accidental factors such as color mixing, incomplete extrusion at the rear section and the like, the material can be always in a static high-temperature state, and the product is easy to be decomposed at high temperature to change the color), so when the plastic product is modified, developed or processed, the color of the product at a static high temperature needs to be evaluated to ensure that the change of the color of the product meets the requirements of the product processing technology. The existing technical scheme is divided into a manual on-duty type and a semi-automatic type. The method is characterized in that the method is manually attended, timing sampling is needed, the sampling is not continuous after the testing, personnel are needed to be in a testing site, the temperature influence is large after the sampling, and the working efficiency is low; semi-automatic type, the pure mechanized operation needs the manual work to send the tray into the test box, and is discontinuous during the test, need set up interval time, withdraws from certain sample after the time out, and the test result is discontinuous.
Disclosure of Invention
In view of this, the present invention provides an automatic static heat-resisting tester, which has the characteristics of simple operation, high automation degree, continuity of test results, high accuracy, high efficiency, etc.
In order to achieve the purpose, the invention adopts the following technical scheme:
the invention provides an automatic static heat-resisting tester, comprising:
the support module comprises a box body, a box body panel and a support, and the support is arranged in a space formed by the box body and the box body panel;
the control module comprises a controller, a blast motor, a stepping motor, a heating ring and a timer, wherein the blast motor and the heating ring are arranged on the side wall of the box body, the stepping motor is arranged on the bracket, the controller controls the blast motor, the heating ring, the temperature sensor and the stepping motor, the stepping motor controls the feeding device, and the blast motor controls the turbofan; and
the control panel is arranged on the surface of the box body and comprises a temperature display area, a key setting area and a time display area, the temperature display area displays the test data of the temperature sensor, and the temperature sensor tests the temperature of a sample; the key setting area is connected with the control module, the heating time, the heating temperature, the running direction of the stepping motor, the running time of the stepping motor, the rotating speed of the stepping motor and the rotating speed of the blower motor are set through the key setting area, and the timer is located in the time display area.
Preferably, the blower motor, the stepper motor, the timer, the heating coil and the temperature sensor are all electrically connected to the controller.
Preferably, the temperature sensor passes through the box body, and the top end of the temperature sensor is positioned above the sample.
Preferably, the tip of the temperature sensor is located 0.2-1cm above the sample.
Preferably, feed arrangement includes lead screw, screw-nut, lead screw belt pulley, bearing frame, tray, the bearing frame is fixed in on the support, screw-nut with tray fixed connection, the lead screw passes screw-nut with the bearing frame, the one end fixed connection of lead screw the lead screw belt pulley, the lead screw belt pulley pass through the belt with step motor connects.
Preferably, the tray is a non-porous plate tray with a thickness of 1-3 mm.
In another technical scheme, the tray is a frame type tray with holes.
Preferably, an Jiong-shaped airflow guide frame is arranged in the box body, the central axis of the airflow guide frame is coincident with the central axis of the blower motor, and the opening of the airflow guide frame is far away from the blower motor.
Preferably, two air holes are symmetrically arranged on the airflow guide frame and are positioned on the tray, the first air hole is positioned 2-5cm above the tray, and the second air hole is positioned 2-5cm below the tray.
Preferably, the heating ring surrounds an outer circumference of the turbofan.
The automatic static heat-resisting tester provided by the invention is provided with automatic feeding and automatic discharging, the temperature in the box is stable, the temperature is not influenced by opening the box, the test result is continuous, the comparison test is convenient, and the accuracy is higher; set up "Jiong" style of calligraphy air current guide frame and gas pocket, guide the air current direction for the case internal air current is steady, even, and the temperature about the sample is unanimous, makes the rate of accuracy of test result higher.
Drawings
FIG. 1 is a schematic block diagram of the major components of the present invention;
FIG. 2 is an external view of the present invention;
FIG. 3 is a schematic structural view of the present invention with the panel of the box removed;
FIG. 4 is a schematic structural view of the present invention from another perspective with the cabinet panels removed;
FIG. 5 is a schematic view of a panel structure of the case according to the present invention;
FIG. 6 is a schematic view of the direction of airflow in accordance with the present invention;
FIG. 7 is an enlarged view of a portion of the air inlet duct of FIG. 3;
FIG. 8 is a photograph of a commercial PVC sample after testing for heat resistance using the apparatus of the present invention.
Description of the labeling: 1-box body, 2-box body panel, 3-bracket, 4-control module, 5-controller, 6-blower motor, 7-stepping motor, 8-heating ring, 9-timer, 10-temperature sensor, 11-air inlet pipe, 12-feeding device, 121-screw rod, 122-screw rod nut, 123-screw rod belt pulley, 124-bearing seat, 125-tray, 126-belt, 13-turbofan, 14-control panel, 15-temperature display area, 16-key setting area, 17-time display area, 18-airflow guide frame, 19-air hole, 191-first air hole, 192-second air hole, 20-sample, 21-feed port and 22-tray setting port.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that, in the present embodiment, the terms "first", "second", "clockwise", "counterclockwise", "above", "below", "upper right", "lower right", "top", "clockwise", "counterclockwise" and the like are used for illustrative purposes only, and do not mean the only embodiment. It should be noted that the term "top" refers to an end near the center of the case. "clockwise" and "counterclockwise" refer to the direction of rotation of the stepper motor when the tester is facing the control panel.
Referring to fig. 1-5, the present invention provides an automatic static heat resistance tester, comprising:
the support module comprises a box body 1, a box body panel 2 and a support 3, wherein the support 3 is arranged in a space formed by the box body 1 and the box body panel 2;
the control module 4 comprises a controller 5, a blower motor 6, a stepping motor 7, a heating ring 8 and a timer 9, wherein the blower motor 6 and the heating ring 8 are arranged on the side wall of the box body 1, the stepping motor 7 is arranged on the bracket 3, the controller 5 controls the blower motor 6, the heating ring 8, a temperature sensor 10 and the stepping motor 7, the stepping motor 7 controls a feeding device 12, and the blower motor 6 controls a turbofan 13; and
the control panel 14 is arranged on the surface of the box body 1 and comprises a temperature display area 15, a key setting area 16 and a time display area 17, the temperature display area 15 displays the test data of the temperature sensor 10, and the temperature sensor 10 tests the temperature of a sample 20; the key setting area 16 is connected with the control module 4, and the heating time, the heating temperature, the running direction of the stepping motor 7, the running time of the stepping motor 7, the rotating speed of the stepping motor 7 and the rotating speed of the blower motor 6 are set through the key setting area 16; the timer 9 is located in the time display area 17.
Further, the blower motor 6, the stepping motor 7, the timer 9, the heating coil 8, and the temperature sensor 10 are all electrically connected to the controller 5.
Further, the temperature sensor 10 penetrates through the box body 1, and the top end of the temperature sensor 10 is positioned above the sample 20.
Specifically, the length of the temperature sensor 10 extending into the box body 1 is adjustable.
Further, the tip of the temperature sensor 10 is located 0.2-1cm above the sample 20.
In the present embodiment, the position where the temperature sensor 10 is installed is not limited, such as a side wall of the case 1 or a top end of the case 1. Preferably, the top of the temperature sensor 10 is located above the center point of the sample.
In this embodiment, the controller 5 adopts a PLC control system, and sets parameters through the key setting area 16, and the parameters are stored in the control chip after being set, and then the test can be directly started without modifying and debugging, and the test can also be restarted by modifying parameters.
Further, referring to fig. 3-4, the feeding device 12 includes a screw 121, a screw nut 122, a screw pulley 123, a bearing seat 124, and a tray 125, the bearing seat 124 is fixed on the bracket 3, the screw nut 122 is fixedly connected to the tray 125, the screw 121 passes through the screw nut 122 and the bearing seat 124, one end of the screw 121 is fixedly connected to the screw pulley 123, and the screw pulley 123 is connected to the stepping motor 7 through a belt 126.
The working principle of the feeding device 12 is as follows: the stepping motor 7 rotates anticlockwise, the belt 126 drives the screw rod belt pulley 123 to rotate anticlockwise, the screw rod 121 rotates anticlockwise, the screw rod nut 122 moves backwards, the tray 125 moves backwards, and the sample 20 enters a heated area; the stepping motor 7 rotates clockwise, the belt 126 drives the screw rod belt pulley 123 to rotate clockwise, the screw rod 121 rotates clockwise, the screw rod nut 122 moves forward, the tray 125 moves forward, and the sample 20 is far away from the heated area.
Further, the tray 125 is a non-porous plate tray having a thickness of 1 to 3 mm. By adopting the technical scheme, when the tray 125 is heated, the tray 125 can keep flatness, and the overlarge temperature difference between the upper surface and the lower surface of the sample 20 caused by the overlarge thickness of the tray 125 is avoided; the nonporous plate-type tray can be made of stainless steel or aluminum plate, and the sample 20 of plastic can not be corroded due to heating and gas release, and the sample 20 can be kept clean in the test process.
In another embodiment, the tray 125 is a perforated frame tray. When in test, an additional sample tray is needed to be placed, and a sample is placed on the sample tray; the user can select different sample trays, such as a glass plate, a stainless steel plate and an aluminum plate, according to different samples.
Further, the box body panel 2 is formed by splicing 6 plates, a feed opening 21 is formed in the middle, and a tray placing opening 22 is formed above.
Further, an Jiong-shaped airflow guide frame 18 is arranged in the box body 1, the central axis of the airflow guide frame 18 is coincident with the central axis of the blower motor 6, and the opening of the airflow guide frame 18 is far away from the blower motor 6.
Further, two air holes 19 are symmetrically arranged on the airflow guide frame 18 relative to the tray 125, the first air hole 191 is located 2-5cm above the tray 125, and the second air hole 192 is located 2-5cm below the tray 125.
Referring to fig. 6, by adopting the above technical solution, two backflow flows are formed in the box body 1, wherein the upper backflow flows from the turbofan 13 to the upper left corner, folds to the upper right corner, folds down, meets the tray 125, folds to the left center, and flows out from the first air hole 191; the downward flow from the turbofan 13 flows to the lower left corner, folds to the lower right corner, folds upward, meets the tray 125, folds to the left center, and flows out from the second air hole 192.
Further, the heating ring 8 surrounds the outer circumference of the turbofan 13. By adopting the technical scheme, the periphery of the turbofan 13 is hot air with similar air temperature, and the turbofan 13 blows the hot air to other places in the box body 1 along the outer side of the airflow guide frame 18.
The air flow direction of the turbofan 13 is perpendicular to the rotating shaft, and compared with the traditional fan, the turbofan 13 can output larger air volume under smaller space occupation, and the efficiency is improved. The blower motor 6 drives the impeller to rotate, the blades force the gas to rotate, the gas does work to increase momentum, the gas is thrown out to the periphery of the impeller under the action of centrifugal force, kinetic energy is converted into pressure energy through the scroll-type shell, after the gas in the impeller is discharged, the pressure in the impeller is lower than the pressure in the air inlet pipe, new gas is sucked into the impeller under the action of pressure difference, and the gas is continuously discharged from the turbofan 13.
Further, referring to fig. 7, the air inlet pipe 11 communicates the box body 1 and the airflow guide frame 18 and guides air from outside the box body 1 into the airflow guide frame 18, the air inlet pipe 11 is provided with a one-way valve, and air outside the box body 1 can only enter the box body 1 and cannot exit from the air inlet pipe 11.
After the turbofan 13 is started, the air enters the air flow guiding frame 18 from the air inlet duct 11, and then enters the turbofan 13 from the first air holes 191 to participate in the air flow circulation shown in fig. 6.
Furthermore, the box body 1 is filled with heat insulation materials, so that the heat efficiency in the box body 1 is higher, and the dissipated heat is less.
In order to improve the sealing performance inside the box body 1, sealing rings are arranged in holes for mounting the temperature sensor 10, the heating ring 8 and the blower motor 6 on the box body 1.
Example 1
For a plate-type tray with no hole in the tray 125, the operation steps and working principle of this embodiment are as follows:
1. switching on a main power supply, and setting a heating temperature T, sample feeding required time T2, sample discharging starting time T3, sample discharging required time T4, sample feeding stepping motor rotating speed N1, sample discharging stepping motor rotating speed N2 and blower motor rotating speed P in a key setting area 16;
2. placing a sample 20 on a tray 125, pressing an automatic test key in a key setting area 16, sending an instruction by a controller 5, automatically starting a blast motor 6 and a heating ring 8 switch by a system, raising the temperature in a box body 1, monitoring the temperature by a temperature sensor 10, sending an instruction by the controller 5 after the heating temperature T is stable, automatically starting a stepping motor 7 by the system to rotate anticlockwise, feeding the sample at a rotating speed N1 of the stepping motor, enabling the sample 20 to enter the box body 1 along with the tray 125, and after the required time T2 of the sample feeding, enabling the sample to reach a designated position, sending an instruction by the controller 5, stopping the operation of the stepping motor 7 and starting timing by a timer 9;
3. when the time t3 for starting discharging the sample is reached, the controller 5 sends an instruction, the stepping motor 7 rotates clockwise, the rotating speed N2 of the sample discharging stepping motor is adopted to send the sample 20 out at a constant speed, the sample 20 in the box body 1 is continuously heated and the sample 20 outside the box body 1 is naturally cooled in the sending process, and the sample 20 is completely sent out of the box within the time t4 required by discharging the sample;
4. the controller 5 sends out an instruction, the stepping motor 7, the heating ring 8 switch and the blower motor 6 are automatically turned off, the sample 20 is taken down, and the color change of the sample 20 is observed.
Specifically, the heating time t1 is the time from when the sample 20 completely reaches the designated position to when the sample 20 completely exits the box 1, and t1 is t3+ t 4.
Specifically, the heating temperature T is the temperature measured by the temperature sensor 10, and the heating temperature T of the present embodiment is adjustable between room temperature and 220 ℃.
Specifically, the operation direction of the stepping motor 7 determines the moving direction of the tray 125, i.e., the feeding and discharging, and determines the heating time of the sample 20.
Specifically, the time t2 required for feeding the sample determines the speed of the sample 20 entering the box 1, and the present embodiment requires the sample 20 to enter the box 1 faster so as to reduce the difference of the heating time of the sample 20, wherein t2 is 5-20s, the speed of the sample entering the box 1 is 0.012m/s-0.05m/s, and the rotating speed of the sample feeding stepping motor N1 is 5-20 r/s.
Specifically, the time t4 required for the sample to be discharged determines the speed of the sample 20 to be discharged from the box 1, and in this embodiment, the sample 20 needs to be slowly moved out of the box 1 so as to test data of a plurality of time points on the sample 20 with a constant length, t4 is 2-2.5h, and the speed of the sample to enter the box 1 is 2.78 × 10-5m/s-3.47×10-5m/s, and the range of the rotating speed N2 of the sample discharging stepping motor is 600-1000 r/h.
Specifically, the sample start discharging time t3 determines the heating time of the sample 20, the heating time of the outermost sample 20 is approximately t1+ t3, and the heating time of the innermost sample 20 is approximately t3+ t 4.
In another embodiment, the sample start discharging time t3 is 0, which means that the sample reaches the designated position, the timer 9 starts to count time, and the stepping motor 7 immediately runs in reverse.
Specifically, the rotation speed of the stepping motor 7 is inversely proportional to the time t2 required for sample feeding, and the rotation speed of the stepping motor 7 is inversely proportional to the time t4 required for sample discharging.
Specifically, the speed of the air speed is determined by the rotating speed P of the air-blowing motor, and the speed of the air speed has certain influence on the temperature.
In the present embodiment, at most 8 samples 20 can be simultaneously tested during the test, and the samples 20 are placed on the tray 125 in parallel at intervals, and the length direction of the samples 20 is perpendicular to the central axis of the blower motor 6.
Example 2
For the pallet 125 being a frame pallet with holes, the operation steps and working principle of this embodiment are as follows:
1. switching on a main power supply, and setting heating temperature T, sample feeding required time T2, sample discharging starting time T3, sample discharging required time T4 and sample tray continuous output time T5 in a key setting area 16, wherein the rotating speed of a sample feeding stepping motor N1, the rotating speed of a sample discharging stepping motor N2, the rotating speed of a sample tray continuous output stepping motor N3 and the rotating speed of a blower motor P;
2. placing a sample 20 on a sample tray, fixing the sample tray on a tray 125 by using an adhesive tape, pressing an automatic test key in a key setting area 16, sending an instruction by a controller 5, automatically starting a blower motor 6 and a heating ring 8 switch by a system, raising the temperature in a box body 1, monitoring the temperature by a temperature sensor 10, sending an instruction by the controller 5 after the heating temperature T is stabilized, automatically starting a stepping motor 7 by the system to rotate anticlockwise, feeding the sample at a rotating speed N1 of the stepping motor, enabling the sample 20 to enter the box body 1 along with the tray 125, and after the required time T2 of sample feeding, enabling the sample to reach a designated position, sending an instruction by the controller 5, stopping the stepping motor 7, and starting timing by a timer 9;
3. when the time t3 for starting discharging the sample is reached, the controller 5 sends an instruction, the stepping motor 7 rotates clockwise, the rotating speed N2 of the sample discharging stepping motor is adopted to send the sample 20 out at a constant speed, the sample 20 in the box body 1 is continuously heated and the sample 20 outside the box body 1 is naturally cooled in the sending process, and the sample 20 is completely sent out of the box within the time t4 required by discharging the sample;
4. the controller 5 gives an instruction, the stepping motor 7 continues to rotate clockwise, the sample tray continues to output the rotating speed N3 of the stepping motor, after the sample tray continues to output the time t5, the sample tray is completely output to the outside of the box body 1, the controller 5 gives an instruction, the stepping motor 7, the heating ring 8 switch and the blower motor 6 are automatically turned off, the sample tray is taken away, and the color change of the sample 20 is observed.
Specifically, the heating time t1 is the time from when the sample 20 completely reaches the designated position to when the sample 20 completely exits the box 1, and t1 is t3+ t 4.
Specifically, the heating temperature T is the temperature measured by the temperature sensor 10, and the heating temperature T of the present embodiment is adjustable between room temperature and 220 ℃.
Specifically, the operation direction of the stepping motor 7 determines the moving direction of the tray 125, i.e., the feeding and discharging, and determines the heating time of the sample 20.
Specifically, the time t2 required for feeding the sample determines the speed of the sample 20 entering the box 1, and the present embodiment requires the sample 20 to enter the box 1 faster so as to reduce the difference of the heating time of the sample 20, wherein t2 is 5-20s, the speed of the sample entering the box 1 is 0.012m/s-0.05m/s, and the rotating speed of the sample feeding stepping motor N1 is 5-20 r/s.
Specifically, the time t4 required for the sample to be discharged determines the speed of the sample 20 to be discharged from the box 1, and in this embodiment, the sample 20 needs to be slowly moved out of the box 1 so as to test data of a plurality of time points on the sample 20 with a constant length, t4 is 2-2.5h, and the speed of the sample to enter the box 1 is 2.78 × 10-5m/s-3.47×10-5m/s, and the range of the rotating speed N2 of the sample discharging stepping motor is 600-1000 r/h.
Specifically, the continuous output time t5 of the sample tray determines the speed of moving the sample tray out of the box 1, in this embodiment, the sample tray needs to be moved out of the box 1 quickly and be removed after being separated from the box 1, so that the operator can conveniently take the sample tray, t5 is 5-20s, the speed of moving the sample tray into the box 1 is 0.012m/s-0.05m/s, and the sample tray continuously outputs the range of 5-20r/s of the rotating speed N3 of the stepping motor.
Specifically, the sample start discharging time t3 determines the heating time of the sample 20, the heating time of the outermost sample 20 is approximately t1+ t3, and the heating time of the innermost sample 20 is approximately t3+ t 4.
In the test process, the present embodiment can simultaneously test 8 samples 20 at most, and the samples 20 are placed on the sample tray in parallel at intervals, and the length direction of the samples 20 is perpendicular to the central axis of the blower motor 6.
Example 3
The automatic static heat-resisting tester of this application has the memory function, and when embodiment 3's last operation was embodiment 1, the operating procedure and the theory of operation of this embodiment:
1. the main power supply is switched on, and the controller 5 automatically calls the parameters set in the embodiment 1;
2. placing a sample 20 on a tray 125, pressing an automatic test key in a key setting area 16, automatically starting a blower motor 6 and a heating ring 8 by a system, increasing the temperature in a box body 1, monitoring the temperature by a temperature sensor 10, sending an instruction by a controller 5 after the heating temperature T is stable, automatically starting a stepping motor 7 by the system to rotate anticlockwise, feeding the sample at a rotating speed N1 of the stepping motor, enabling the sample 20 to enter the box body 1 along with the tray 125, and after the required sample feeding time T2, enabling the sample to reach a designated position, sending the instruction by the controller 5, stopping the operation of the stepping motor 7, and starting timing by a timer 9;
3. when the time t3 for starting discharging the sample is reached, the controller 5 sends an instruction, the stepping motor 7 rotates clockwise, the rotating speed N2 of the sample discharging stepping motor is adopted to send the sample 20 out at a constant speed, the sample 20 in the box body 1 is continuously heated and the sample 20 outside the box body 1 is naturally cooled in the sending process, and the sample 20 is completely sent out of the box within the time t4 required by discharging the sample;
4. the controller 5 sends out an instruction, the stepping motor 7, the heating ring 8 switch and the blower motor 6 are automatically turned off, the sample 20 is taken down, and the color change of the sample 20 is observed.
Example 4
Cutting a PVC product purchased in the market into 2cm multiplied by 18cm, placing the PVC product on a tray 125, setting the heating temperature T to be 180 ℃, setting the time T2 required by sample feeding to be 10s, the time T3 required by sample discharging to be 0s, and the time T4 required by sample discharging to be 130min, testing the heat resistance of the sample, and observing the yellowing condition of the sample, wherein the test result is shown in figure 8.
As can be seen from the test results of FIG. 8, since the heating time of the sample is continuously changed, the color of the sample also shows gradual change from light yellow to dark yellow and light black, and the test data is visual and accurate by using the tester.
In the present invention, the source of the above-mentioned member is not particularly limited except for the above-mentioned specific description, and may be a general commercial product.
The automatic static heat-resisting tester provided by the invention is provided with automatic feeding and automatic discharging, the temperature in the box is stable, the temperature is not influenced by opening the box, the test result is continuous, the comparison test is convenient, and the accuracy is higher; the Jiong-shaped airflow guide frame 18 and the air holes 19 are arranged to guide the airflow direction, so that the airflow in the box is stable and uniform, the temperatures above and below the sample 20 are consistent, and the accuracy of the test result is higher; the instrument has the function of memorizing parameters, automatically calls the parameters set last time, and saves time.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (8)
1. An automatic static thermal resistance tester, comprising:
the support module comprises a box body, a box body panel and a support, and the support is arranged in a space formed by the box body and the box body panel;
the control module comprises a controller, a blower motor, a stepping motor, a heating ring and a timer, the blower motor and the heating ring are arranged on the side wall of the box body, the stepping motor is arranged on the support, the controller controls the blower motor, the heating ring, a temperature sensor and the stepping motor, the stepping motor controls a feeding device, the blower motor controls a turbofan, the feeding device comprises a screw rod, a screw rod nut, a screw rod belt pulley, a bearing seat and a tray, an Jiong-shaped airflow guide frame is arranged in the box body, the central axis of the airflow guide frame is superposed with the central axis of the blower motor, the opening of the airflow guide frame is far away from the blower motor, and two air holes are symmetrically arranged on the airflow guide frame on the tray; and
the control panel is arranged on the surface of the box body and comprises a temperature display area, a key setting area and a time display area, the temperature display area displays the test data of the temperature sensor, and the temperature sensor tests the temperature of a sample; the key setting area is connected with the control module, the heating time, the heating temperature, the running direction of the stepping motor, the running time of the stepping motor, the rotating speed of the stepping motor and the rotating speed of the blower motor are set through the key setting area, and the timer is located in the time display area.
2. The automated static heat resistance tester of claim 1, wherein the blower motor, the stepper motor, the timer, the heating coil, and the temperature sensor are all electrically connected to the controller.
3. The automated static heatproof tester of claim 1, wherein the temperature sensor passes through the box with a top end of the temperature sensor above the sample.
4. The automatic static heat resistance tester of claim 1, wherein the bearing seat is fixed on the bracket, the screw nut is fixedly connected with the tray, the screw rod passes through the screw nut and the bearing seat, one end of the screw rod is fixedly connected with the screw rod belt pulley, and the screw rod belt pulley is connected with the stepping motor through a belt.
5. The automated static heat resistance tester of claim 1 wherein the tray is a non-porous plate tray having a thickness of 1-3 mm.
6. The automated static heat resistance tester of claim 1 wherein the tray is a perforated frame tray.
7. The automated static heat resistance tester of claim 1 wherein a first said air vent is located 2-5cm above said tray and a second said air vent is located 2-5cm below said tray.
8. The automated static heat resistance tester of claim 1, wherein the heating collar surrounds an outer periphery of the turbofan.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911062129.4A CN110632115B (en) | 2019-11-02 | 2019-11-02 | Automatic static heat-resisting tester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911062129.4A CN110632115B (en) | 2019-11-02 | 2019-11-02 | Automatic static heat-resisting tester |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110632115A CN110632115A (en) | 2019-12-31 |
| CN110632115B true CN110632115B (en) | 2022-03-04 |
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