Low-temperature testing machine

Abstract

The utility model provides a low-temperature testing machine, and relates to the technical field of testing equipment. Comprising a refrigeration cabinet and a control device, a base is arranged in the refrigeration cabinet, a storage platform suitable for containing a base plate and a three-axis walking mechanism connected with the control device are arranged on the base, and a water storage tank and a spray valve connected with the water storage tank are arranged on the three-axis walking mechanism. The spraying valve is electrically connected with the control device, and the spraying valve is suitable for being driven by the three-axis walking mechanism to conduct quantitative spraying on the base plate at the designated position above the base plate; the water storage tank is connected with an external water supply device through a conveying pipe. According to the scheme, the testing function and the testing effect of the testing machine are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of testing equipment, in particular to a low-temperature testing machine. Background Art

[0002] At present, in the field of integrated circuits, some circuit substrates need to be tested at low temperatures to ensure that the substrates can operate normally when they encounter freezing weather after being assembled into products. At present, the test of substrates is generally to directly place the substrates in a low-temperature environment. However, during the test, it is impossible to simulate various conditions in a low-temperature environment, especially when the substrate is partially attacked by frost. The existing test equipment cannot simulate this, resulting in poor test results and difficulty in meeting the test requirements under various freezing conditions. Utility Model Content

[0003] The utility model discloses a low temperature testing machine, aiming to improve the above-mentioned problems.

[0004] The utility model adopts the following scheme:

[0005] The present application provides a low-temperature testing machine, including a refrigerating cabinet and a control device, wherein the refrigerating cabinet includes a base, on which a storage platform suitable for placing a substrate and a three-axis walking mechanism connected to the control device are arranged, and the three-axis walking mechanism is provided with a water storage tank and a spray valve connected to the water storage tank, the spray valve is electrically connected to the control device, and the spray valve is suitable for quantitatively spraying the substrate at a designated position above the substrate under the drive of the three-axis walking mechanism; the water storage tank is connected to an external water supply device through a delivery pipe.

[0006] Furthermore, a first heating device is provided on the outside of the water tank to ensure that the water in the water tank does not freeze.

[0007] Furthermore, a liquid level sensor is provided in the water tank to detect the water level in the water tank.

[0008] Furthermore, a peristaltic pump is provided between the external water supply device and the water storage tank to transport the external water source into the water storage tank when the liquid level sensor detects that the water level is lower than a preset value.

[0009] Furthermore, a second heating device is arranged outside the delivery pipe to prevent the water in the delivery pipe from freezing.

[0010] Furthermore, the second heating device is electromagnetic heating cotton.

[0011] Furthermore, an ultrasonic sensor is provided on the placement platform for detecting the substrate, and the ultrasonic sensor is connected to the control device.

[0012] Furthermore, the spray valve is a piezoelectric spray valve.

[0013] Beneficial effects:

[0014] This solution sets a three-axis walking mechanism in the refrigeration cabinet to drive the water tank and the piezoelectric spray valve to move above the substrate. The piezoelectric spray valve can be controlled by a control device to perform quantitative spraying at any position above the substrate. The sprayed mist quickly freezes on the substrate at low temperatures to achieve the effect of local testing. The amount and position of each spray can be controlled by the control device to meet various testing requirements. Furthermore, a first heating device and a second heating device are respectively set on the water tank and the delivery pipe, so that ice will not form in the low temperature environment of the refrigeration cabinet, thereby ensuring that the piezoelectric spray valve can spray water mist. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a structural schematic diagram of a low temperature testing machine according to an embodiment of the utility model;

[0016] Figure 2 This is a structural schematic diagram of a three-axis walking mechanism and a base of a low-temperature testing machine according to an embodiment of the utility model;

[0017] Figure 3 It is a schematic diagram of the installation structure of a water storage tank and a spray valve of a low-temperature testing machine according to an embodiment of the utility model;

[0018] Icons: refrigeration cabinet 1, base 2, storage platform 3, three-axis walking mechanism 4, water storage tank 5, spray valve 6, delivery pipe 7, peristaltic pump 8, liquid level sensor 9, first heating device 10. DETAILED DESCRIPTION

[0019] Combination Figures 1 to 3 As shown, this embodiment provides a low-temperature testing machine, including a refrigerating cabinet 1 and a control device, wherein the refrigerating cabinet 1 includes a base 2, on which a storage platform 3 suitable for placing a substrate and a three-axis walking mechanism 4 connected to the control device are arranged, and the three-axis walking mechanism 4 is provided with a water storage tank 5 and a spray valve 6 connected to the water storage tank 5, wherein the spray valve 6 adopts a piezoelectric spray valve 6; the piezoelectric spray valve 6 is electrically connected to the control device, and the piezoelectric spray valve 6 is suitable for quantitatively spraying the substrate at a designated position above the substrate under the drive of the three-axis walking mechanism 4; the water storage tank 5 is connected to an external water supply device through a delivery pipe 7.

[0020] In this embodiment, the refrigeration cabinet 1 includes a accommodating chamber for testing and a refrigeration device, and the refrigeration device can cool the accommodating chamber to achieve the temperature required for the test. The base 2 is arranged in the accommodating chamber, and the accommodating chamber can be set to be a top opening or a side opening. The three-axis walking mechanism 4 is arranged on one side of the base 2, and the storage platform 3 is arranged on the other side of the three-axis walking mechanism 4, and the three-axis walking mechanism 4 can be moved at any position above the storage platform 3. The water storage tank 5 and the spray valve 6 are arranged on the Z axis of the three-axis walking mechanism 4. The water storage tank 5 and the spray valve 6 can be driven by the three-axis walking mechanism 4 to move, thereby controlling the spray valve 6 to spray at any position above the substrate, and quantitative spraying can be performed to meet various test requirements. It is further arranged that a first heating device 10 is arranged on the outside of the water storage tank 5 to ensure that the water in the water storage tank 5 does not freeze. The first heating device 10 here can be an electromagnetic heating cotton arranged outside the water storage tank 5, or other heating methods can be used for heating. This ensures that the water in the water storage tank 5 inside the freezer will not freeze and cannot be sprayed.

[0021] In this embodiment, the control device can adopt an existing control platform, such as an industrial computer, etc. The control device can control water inlet, water spraying, control the three-axis walking mechanism 4 to move to a specified position, control the spray valve 6 to spray along a certain route, etc.

[0022] The water tank 5 is connected to an external water supply device through a delivery pipe 7. The external water supply device is provided with a peristaltic pump 8 for delivering water to the water tank 5. The use of the peristaltic pump 8 here can improve the control accuracy of the water supply. Preferably, a second heating device is provided outside the delivery pipe 7 to prevent the water in the delivery pipe 7 from freezing; the second heating device here can be electromagnetic heating cotton, which is convenient for bending at multiple angles and has low requirements for shape. The electromagnetic heating cotton here is to set an electric heating wire on the insulation cotton to heat the delivery pipe 7 wrapped by the electromagnetic heating cotton.

[0023] Combination Figure 3 As shown, in one embodiment, a liquid level sensor 9 is provided in the water tank 5 to detect the water level in the water tank 5. When the liquid level sensor 9 detects that the water level is lower than a preset value, the external water source is transported to the water tank 5 through the peristaltic pump 8. Here, since the liquid level sensor 9 and the peristaltic pump 8 are both electrically connected to the control device, coordinated control is performed by the control device.

[0024] In another embodiment, an ultrasonic sensor is provided on the storage platform 3 for detecting the substrate, and the ultrasonic sensor is connected to the control device. Here, the control device cooperates with the ultrasonic sensor to obtain whether the substrate is placed in the storage platform 3. When there is no substrate in the storage platform 3, the spray valve 6 cannot work to prevent empty spraying. When no substrate is placed on the storage platform 3 for more than a certain period of time, the control device can automatically control the three-axis walking mechanism 4 to run once to regularly scrape off the ice chips on the slide rail of the three-axis walking mechanism 4.

[0025] In another embodiment, a scraper device can be further provided on the side of the storage platform 3, and the scraper device includes a scraper and a motion mechanism. The scraper can be driven by the motion mechanism to scrape inside the storage platform 3 or around the storage platform 3 to prevent the substrate from being successfully installed on the storage platform 3 due to ice formation on the storage platform 3 during long-term use.

[0026] Through the solution of this embodiment, various test requirements for substrates under low temperature testing can be met, and the types and effects of tests can be improved.

[0027] It should be understood that the above are only preferred implementations of the present utility model, and the protection scope of the present utility model is not limited to the above embodiments. All technical solutions under the concept of the present utility model belong to the protection scope of the present utility model.

[0028] The above description of the drawings used in the implementation manner only shows certain embodiments of the utility model and should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

Claims

1. A low temperature testing machine, comprising a refrigeration cabinet and a control device, characterized in that: The refrigeration cabinet includes a base, on which a storage platform suitable for placing a substrate and a three-axis walking mechanism connected to the control device are arranged, and the three-axis walking mechanism is provided with a water tank and a spray valve connected to the water tank, the spray valve is electrically connected to the control device, and the spray valve is suitable for quantitatively spraying the substrate at a designated position above the substrate under the drive of the three-axis walking mechanism; the water tank is connected to an external water supply device through a delivery pipe.

2. The low temperature testing machine according to claim 1, characterized in that: A first heating device is arranged on the outside of the water storage tank to ensure that the water in the water storage tank does not freeze.

3. The low temperature testing machine according to claim 1, characterized in that: A liquid level sensor is arranged in the water storage tank to detect the water level in the water storage tank.

4. The low temperature testing machine according to claim 3, characterized in that: A peristaltic pump is arranged between the external water supply device and the water storage tank to transport the external water source to the water storage tank when the liquid level sensor detects that the water level is lower than a preset value.

5. The low temperature testing machine according to claim 1, characterized in that: A second heating device is arranged outside the delivery pipe to prevent the water in the delivery pipe from freezing.

6. The low temperature testing machine according to claim 5, characterized in that: The second heating device is electromagnetic heating cotton.

7. The low temperature testing machine according to claim 1, characterized in that: An ultrasonic sensor is arranged on the placement platform for detecting the substrate, and the ultrasonic sensor is connected to the control device.

8. The low temperature testing machine according to claim 1, characterized in that: The spray valve adopts a piezoelectric spray valve.

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