Cold and hot impact testing machine and cold and hot switching mechanism thereof

Abstract

The utility model discloses a cold and hot impact testing machine and a cold and hot switching mechanism thereof, which can perform frequent cold and hot impact in the testing process and meet the requirement of testing times. The cold and hot switching mechanism comprises a valve seat, a first air outlet pipe, a second air outlet pipe, a valve plate and a driving device; the input end of the valve seat is used for being connected with an air supply mechanism of the cold and hot impact testing machine and is communicated with the output end of the valve seat; a first air outlet pipe and a second air outlet pipe are horizontally arranged at the output end of the valve seat at intervals; the valve plate is arranged in the valve seat in a sliding fit mode, and ventilation holes are formed in the valve plate. The driving device is in transmission connection with the valve plate so that the valve plate can slide, and the first air outlet pipe or the second air outlet pipe can be opened.

Description

TECHNICAL FIELD

[0001] The utility model belongs to cold and hot impact test technical field, especially point to a kind of cold and hot impact testing machine and cold and hot switching mechanism for thermosensitive component applied. BACKGROUND

[0002] Thermal Sensor Component refers to those electronic components that can react to temperature changes and convert them into measurable signals. These components are widely used in temperature monitoring, control and measurement systems. Thermal Sensor Component can be based on different physical principles, such as thermoelectric effect, resistance temperature effect, thermal radiation effect, etc.

[0003] With the increasing popularity of Thermal Sensor Component in various electronic devices, more stringent requirements are placed on its quality and stability. Therefore, conducting effective cold and hot impact tests is crucial to ensuring the quality of Thermal Sensor Component. Although there are various cold and hot impact test equipment on the market, they are all closed cold and hot impact testing machines. Since cold and hot impact needs to be performed frequently during product testing, existing equipment cannot meet these experimental requirements. SUMMARY

[0004] The main purpose of the utility model is to provide a cold and hot impact testing machine and its cold and hot switching mechanism, to solve the problems existing in the prior art, and to enable frequent cold and hot impact during testing to meet the requirements of the number of tests.

[0005] To achieve the above purpose, the solution of the utility model is as follows:

[0006] A cold and hot switching mechanism includes a valve seat, a first air outlet pipe, a second air outlet pipe, a valve plate and a driving device. The input end of the valve seat is used to connect the air supply mechanism of the cold and hot impact testing machine and is in communication with the output end of the valve seat. The output end of the valve seat is horizontally spaced apart and provided with a first air outlet pipe and a second air outlet pipe. The valve plate is slidingly fitted in the valve seat, and a ventilation hole is provided on the valve plate. The driving device is in transmission connection with the valve plate to make the valve plate slide, so as to realize the opening of the first air outlet pipe or the second air outlet pipe.

[0007] The driving device is a stepping motor with output shaft arranged vertically, and its output shaft penetrates into the valve seat and is connected with a transmission gear, and the valve plate is provided with a rack engaged with the transmission gear.

[0008] Preferably, the upper surface of the valve seat is provided with a fixing seat for locking and mounting the driving device.

[0009] The output end of the valve seat is sequentially provided with a first air outlet pipe and two second air outlet pipes at horizontal intervals, the hole spacing between the first air outlet pipe and the adjacent second air outlet pipe is not equal to the hole spacing between the two second air outlet pipes, and two air vent holes are arranged on the valve plate, and the hole spacing between the two air vent holes is equal to the hole spacing of the two second air outlet pipes.

[0010] Preferably, the input end of the valve seat is provided with a first air inlet pipe and a second air inlet pipe at horizontal intervals, a first channel is arranged between the first air inlet pipe and the first air outlet pipe, a second channel is arranged between the second air inlet pipe and the second air outlet pipe, the second channel has a bifurcation in communication with the two second air outlet pipes, a sliding channel is arranged in the valve seat and penetrates the first channel and the second channel, and the valve plate is slidingly fitted in the sliding channel.

[0011] Preferably, the side surface of the valve seat is provided with a photoelectric sensing switch at a position corresponding to the port of the sliding channel, and the end of the valve plate is provided with a sensing sheet in sensing cooperation with the photoelectric sensing switch.

[0012] Preferably, a mounting plate is arranged below the valve seat, and limit plates are arranged on both sides of the mounting plate at positions corresponding to the sliding channel, for limiting the movement stroke of the valve plate.

[0013] A cold and hot switching mechanism, and a wind supply mechanism, a test mechanism and a machine table, the cold and hot switching mechanism, the wind supply mechanism and the test mechanism are all installed on the machine table, the wind supply mechanism is communicated to the input end of the valve seat, the test mechanism comprises a third air inlet pipe and two fourth air inlet pipes, and a heating pipe is arranged at the input end of the third air inlet pipe, the first air outlet pipe is communicated with the heating pipe, and the second air outlet pipe is communicated with the fourth air inlet pipe.

[0014] The wind supply mechanism is two high-pressure air pumps, which are respectively communicated with the first air inlet pipe and the second air inlet pipe of the input end of the valve seat.

[0015] The test mechanism further comprises a test air cavity, a support and a turbulence net, the test air cavity is used for placing a sample to be tested, the support is used for supporting the heating pipe and the test air cavity, and the turbulence net is arranged between the input end of the test air cavity and the third air inlet pipe and the fourth air inlet pipe.

[0016] Preferably, a temperature monitoring thermocouple is further arranged in the test air cavity, for monitoring the temperature in the test air cavity in real time.

[0017] After the above technical scheme is adopted, the utility model has the following technical effects:

[0018] Through the above scheme, the relative relationship between the ventilation hole and the first air outlet pipe and the second air outlet pipe can be flexibly controlled by setting the slidable valve plate in the valve seat and controlling the sliding of the valve plate by the driving device, the corresponding air outlet pipe is opened when aligned, so that the rapid sliding of the valve plate realizes the rapid opening and closing of the first air outlet pipe and the second air outlet pipe, and the cold and hot impact test machine is matched with the air supply mechanism and the test mechanism to realize frequent cold and hot impact on the sample to be tested, the output and switching of cold air and hot air can be quickly responded, so that the test times and quality requirements are met; the cold and hot switching mechanism itself does not need to have a heating function, and the cold and hot air output of the first air outlet pipe and the second air outlet pipe can also not be limited, and can be flexibly set according to experimental requirements. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is a cold and hot switching mechanism of a specific embodiment of the utility model.

[0020] Figure 2 It is an exploded view of the cold and hot switching mechanism of a specific embodiment of the utility model.

[0021] Figure 3 It is a state diagram of the cold and hot switching mechanism of a specific embodiment of the utility model Figure 1 .

[0022] Figure 4 It is a state diagram of the cold and hot switching mechanism of a specific embodiment of the utility model Figure 2 .

[0023] Figure 5 It is a perspective view of a cold and hot impact test machine of a specific embodiment of the utility model.

[0024] Figure 6 It is a perspective view of a test mechanism of a specific embodiment of the utility model.

[0025] BRIEF DESCRIPTION OF DRAWINGS

[0026] 1-cold and hot switching mechanism;11-valve seat;111-first channel;112-second channel;113-sliding channel;12-first air outlet pipe;13-second air outlet pipe;14-valve plate;141-ventilation hole;15-driving device;16-transmission gear;17-rack;18-fixed seat;19-first air inlet pipe;110-second air inlet pipe;120-photoelectric induction switch;130-induction sheet;140-mounting plate;150-limiting plate;

[0027] 2-air supply mechanism;

[0028] 3-test mechanism;31-third air inlet pipe;32-fourth air inlet pipe;33-heating pipe;34-test air cavity;35-bracket;36-turbulent net;37-temperature monitoring thermocouple;

[0029] 4- machine. DETAILED DESCRIPTION

[0030] In order to further explain the technical scheme of the utility model, the utility model will be described in detail below through specific embodiments.

[0031] Reference Figures 1-4 As shown in the figure, the utility model discloses a cold and hot switching mechanism 1, including valve seat 11, first air outlet pipe 12, second air outlet pipe 13, valve plate 14 and drive device 15,

[0032] The input end of valve seat 11 is used to connect the air supply mechanism 2 of cold and hot impact testing machine, and is communicated with the output end of valve seat 11;The output end of valve seat 11 is horizontally spaced and sequentially provided with a first air outlet pipe 12 and two second air outlet pipes 13;The hole spacing between first air outlet pipe 12 and adjacent second air outlet pipe 13 is not equal to the hole spacing between two second air outlet pipes 13;

[0033] Valve plate 14 is slidably fitted in valve seat 11, and two air vents 141 are arranged on it, and the hole spacing between two air vents 141 is equal to the hole spacing of two second air outlet pipes 13;

[0034] Drive device 15 is drivingly connected with valve plate 14 to make valve plate 14 slide, realizing that first air outlet pipe 12 or second air outlet pipe 13 is opened.

[0035] Through the above scheme, the utility model is slidably arranged valve plate 14 in valve seat 11, and the sliding of valve plate 14 is realized by drive device 15, the relative relationship of air vent 141, first air outlet pipe 12 and second air outlet pipe 13 can be flexibly controlled, the corresponding air outlet pipe is opened when alignment, so that the quick opening and closing of first air outlet pipe 12 and second air outlet pipe 13 is realized through the quick sliding of valve plate 14 (see Figure 3 、 4 ), so as to realize the frequent cold and hot impact on the sample to be tested in cooperation with the air supply mechanism 2 and testing mechanism 3 of cold and hot impact testing machine, the output and switching of cold air and hot air can be quickly responded, thereby meeting the requirements of test times and quality;The cold and hot switching mechanism 1 itself does not need to have heating function, and the cold and hot air output of first air outlet pipe 12 and second air outlet pipe 13 can also not be limited, which can be flexibly set according to experimental requirements.

[0036] The specific embodiments of the above cold and hot switching mechanism are shown below.

[0037] The driving device 15 is a stepping motor with the output shaft arranged vertically, the output shaft of which penetrates into the valve seat 11 and is connected with the transmission gear 16, and the valve plate 14 is provided with the rack 17 engaged with the transmission gear 16, so that the driving device 15 is in transmission connection with the valve plate 14.

[0038] Further, the upper surface of the valve seat 11 is provided with the fixing seat 18 for locking and mounting the driving device 15.

[0039] The input end of the valve seat 11 is provided with the first air inlet pipe 19 and the second air inlet pipe 110 arranged horizontally and at intervals, the first air inlet pipe 19 and the first air outlet pipe 12 are provided with the first channel 111, the second air inlet pipe 110 and the second air outlet pipe 13 are provided with the second channel 112, the second channel 112 has a bifurcation communicated with the two second air outlet pipes 13, the sliding channel 113 penetrating through the first channel 111 and the second channel 112 is arranged in the valve seat 11, and the valve plate 14 is slidingly fitted in the sliding channel 113.

[0040] Further, the side surface of the valve seat 11 is provided with the photoelectric sensing switch 120 at the position corresponding to the port of the sliding channel 113, and the end of the valve plate 14 is provided with the sensing sheet 130 in sensing cooperation with the photoelectric sensing switch 120.

[0041] Meanwhile, the lower portion of the valve seat 11 is provided with the mounting plate 140, and the two sides of the mounting plate 140 are provided with the limiting plate 150 at the position corresponding to the sliding channel 113, for limiting the moving stroke of the valve plate 14.

[0042] Reference Figures 5-6 As shown in the drawings, the utility model also discloses a cold and hot impact testing machine, including the cold and hot switching mechanism 1 of above, and air supply mechanism 2, testing mechanism 3 and machine table 4, cold and hot switching mechanism 1, air supply mechanism 2 and testing mechanism 3 all are installed on machine table 4, air supply mechanism 2 is communicated to the input end of valve seat 11, testing mechanism 3 includes a third air inlet pipe 31 and two fourth air inlet pipes 32, and heating pipe 33 is installed at the input end of third air inlet pipe 31, first air outlet pipe 12 is communicated with heating pipe 33, and second air outlet pipe 13 is communicated with fourth air inlet pipe 32, by this, through the driving device 15 drive valve plate 14 fast sliding, can realize that air supply mechanism 2 is supplied to testing mechanism 3 cold and hot air, and cold air has two pipes and supplies simultaneously, is favorable for fast cooling.

[0043] The following shows the specific embodiment of the above cold and hot impact testing machine.

[0044] The air supply mechanism 2 is two high-pressure air pumps, which are communicated with the first air inlet pipe 19 and the second air inlet pipe 110 of the input end of the valve seat 11 respectively.

[0045] The test mechanism 3 further comprises a test air cavity 34, a support 35 and a turbulence net 36; the test air cavity 34 is used for placing a sample to be tested; the support 35 is used for supporting the heating pipe 33 and the test air cavity 34; the turbulence net 36 is arranged between the input end of the test air cavity 34 and the third air inlet pipe 31 and the fourth air inlet pipe 32, so as to realize uniform supply of cold and hot air.

[0046] Further, the test air cavity 34 is further provided with a temperature monitoring thermocouple 37, which is used for monitoring the temperature in the test air cavity 34 in real time, and has a function of preventing overheating. Through program setting of the machine, the machine is directly turned off in an overheating state, so as to avoid burning of the product to be tested in an abnormal condition.

[0047] The above embodiments and drawings are not limited to the product form and style of the utility model, and any ordinary technical personnel in the technical field makes appropriate changes or modifications, which should be regarded as not departing from the patent category of the utility model.

Claims

1. A hot / cold switching mechanism, characterized in that: It includes a valve seat, a first air outlet pipe, a second air outlet pipe, a valve plate, and a drive unit; The input end of the valve seat is used to connect to the air supply mechanism of the thermal shock tester and is connected to the output end of the valve seat; the output end of the valve seat is provided with a first air outlet pipe and a second air outlet pipe at horizontal intervals. The valve plate is slidably fitted inside the valve seat and has ventilation holes on it; The drive device is connected to the valve plate to make the valve plate slide, thereby opening the first air outlet pipe or the second air outlet pipe.

2. The hot and cold switching mechanism as described in claim 1, characterized in that: The driving device is a stepper motor with its output shaft arranged vertically. Its output shaft passes through the valve seat and is connected to a transmission gear. The valve plate is provided with a rack that meshes with the transmission gear.

3. The hot and cold switching mechanism as described in claim 2, characterized in that: The upper surface of the valve seat is provided with a fixing seat for locking the drive device.

4. The hot / cold switching mechanism as described in claim 1, characterized in that: The valve seat has a first air outlet pipe and two second air outlet pipes arranged horizontally at intervals at the output end; the hole spacing between the first air outlet pipe and the adjacent second air outlet pipe is not equal to the hole spacing between the two second air outlet pipes; the valve plate has two ventilation holes, and the hole spacing between the two ventilation holes is equal to the hole spacing between the two second air outlet pipes.

5. The hot and cold switching mechanism as described in claim 4, characterized in that: The valve seat has a first air inlet pipe and a second air inlet pipe horizontally spaced at its input end. A first channel is provided between the first air inlet pipe and the first air outlet pipe, and a second channel is provided between the second air inlet pipe and the second air outlet pipe. The second channel has a branch that communicates with the two second air outlet pipes. The valve seat has a sliding channel that passes through both the first channel and the second channel, and the valve plate slides within the sliding channel.

6. The hot and cold switching mechanism as described in claim 5, characterized in that: A photoelectric sensor switch is provided on the side of the valve seat at the position corresponding to the sliding channel port, and a sensing plate is provided at the end of the valve plate to cooperate with the photoelectric sensor switch.

7. The hot / cold switching mechanism as described in claim 5, characterized in that: A mounting plate is provided below the valve seat, and limit plates are provided on both sides of the mounting plate at positions corresponding to the sliding channel to limit the movement stroke of the valve plate.

8. A thermal shock testing machine, comprising a thermal switching mechanism as described in any one of claims 1 to 7, characterized in that: It also includes an air supply mechanism, a testing mechanism, and a machine platform; the cooling and heating switching mechanism, the air supply mechanism, and the testing mechanism are all installed on the machine platform, and the air supply mechanism is connected to the input end of the valve seat; the testing mechanism includes a third air inlet pipe and two fourth air inlet pipes, as well as a heating pipe installed at the input end of the third air inlet pipe; the first air outlet pipe is connected to the heating pipe, and the second air outlet pipe is connected to the fourth air inlet pipe.

9. The thermal shock testing machine as described in claim 8, characterized in that: The air supply mechanism consists of two high-pressure air pumps, which are respectively connected to the first air inlet pipe and the second air inlet pipe at the input end of the valve seat.

10. The thermal shock testing machine as described in claim 8, characterized in that: The testing mechanism also includes a testing air cavity, a support, and a baffle net; the testing air cavity is used to place the sample to be tested; the support is used to support the heating tube and the testing air cavity; the baffle net is disposed between the input end of the testing air cavity and the third air inlet pipe and the fourth air inlet pipe; The test air chamber is also equipped with a temperature monitoring thermocouple for real-time monitoring of the temperature inside the test air chamber.

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