Ultraviolet testing machine

Abstract

The invention relates to the technical field of testing machines, in particular to an ultraviolet testing machine which comprises a testing machine body, a plurality of hollow pipes are fixedly arranged at the top of the testing machine body in a penetrating mode, a sealing cover is placed at the top of each hollow pipe, and a plurality of placing columns are arranged at the bottom of the inner wall of the testing machine body. A placing plate is fixedly arranged at the top of the placing column, the placing column is located under the corresponding hollow pipe, and the shape of the cross section of the placing column is matched with the shape of the cross section of an inner hole of the hollow pipe; a plurality of driving parts are arranged on the testing machine body, and the driving parts drive the corresponding placing column parts to enter the hollow pipe. The sampling device has the advantages that interference of the external environment to the internal environment is avoided during sampling, meanwhile, the sampling space is enlarged, and an operator can conveniently, rapidly and correctly take a test sample.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of testing machines, in particular to a UV testing machine. BACKGROUND

[0002] The UV testing machine is a professional equipment for simulating UV radiation environment and testing the weather resistance of materials, which is widely used in the fields of plastics, coatings, rubber, packaging materials, etc. The UV testing machine simulates sunlight UV radiation through UV fluorescent lamps (such as UVA-340, UVB-313, etc.), and combines with temperature and humidity control, condensation or spraying system to reproduce the aging process of materials exposed to the outdoors for a long time in a short time.

[0003] When multiple samples are placed in the UV testing machine for testing, the operator needs to take one of the samples for testing (such as color change, performance change, etc.) every certain period of time. During the taking process, the operator needs to open the door of the UV testing machine, which accelerates the air circulation at the door and affects the internal environment of the UV testing machine, for example: 1. The rapid loss of temperature in the box destroys the constant environment required for testing, which may distort the aging test data of the remaining materials still in the UV testing machine; 2. The UV lamp tube will be affected by the sudden change of temperature when the door is opened, which will affect the stability of light emission and cause uneven illumination of the sample, affecting the accuracy of weather resistance test.

[0004] In order to avoid opening the door during testing and to reduce the contact area between the internal and external air of the testing machine, a sampling hole is provided on the testing machine, and the sampling hole is small in size. The sampling hole is shielded by a movable plate, and the movable plate is started to take out the sample during use. However, in the actual sampling process, the internal and external environments of the UV testing machine are still in a flowing communication state when the sample is taken out through the sampling hole. During the sampling process, a large amount of external air will mix with the internal air, which will change the internal environment of the UV testing machine, and thus cause inaccurate test results of the product.

[0005] In addition, in order to further reduce the influence of the external environment on the internal environment, the sampling hole is designed to be small enough to only allow the operator's hand to enter, which requires the operator to be extra careful and pay attention to the taking method during the taking process. This is not convenient for the operator to quickly take out the sample, and increases the taking time, which in turn increases the circulation time of the internal and external air of the UV testing machine. Although the sampling hole area only accommodates the operator's hand and the sample in and out, the circulation of part of the external air will also change the internal environment of the UV testing machine. SUMMARY

[0006] According to the deficiencies existing in the prior art, the purpose of the present application is to provide an ultraviolet tester, which can avoid the interference of the external environment on the internal environment when sampling, and has a larger sampling space, thereby facilitating the operator to quickly and correctly take the test sample.

[0007] The above technical purpose of the present application is achieved by the following technical solutions: An ultraviolet tester comprises a tester body, a plurality of hollow tubes are fixedly arranged on the top of the tester body, a sealing cover is arranged on the top of each hollow tube, a plurality of placement columns are arranged on the inner wall of the tester body, a placement plate is fixedly arranged on the top of each placement column, the placement column is located directly below the corresponding hollow tube, and the cross-sectional shape of the placement column is matched with the cross-sectional shape of the inner hole of the hollow tube. A plurality of driving portions are arranged on the tester body, and the driving portion drives the corresponding placement column portion to enter the inside of the hollow tube.

[0008] According to the above technical solution, the sample is placed on the placement plate, when sampling, the driving portion drives the placement column portion to enter the hollow tube provided with the sealing plate on the top, at this time, the sample is located in the hollow tube, after the sealing plate is opened, the placement column separates the internal environment of the ultraviolet tester from the external environment, thereby avoiding the interference of the external environment on the internal environment, and the sampling space is enlarged, thereby facilitating the operator to quickly and correctly take the test sample.

[0009] In a preferred example, a plurality of air holes are arranged on each placement column, the vertical cross-section of the air hole is L-shaped, and the placement plate does not shield any air hole.

[0010] According to the above technical solution, when the placement column starts to contact the hollow tube, the placement column can quickly and smoothly move in the hollow tube.

[0011] In a preferred example, a plurality of shielding assemblies are arranged on the placement column, and the number of shielding assemblies is equal to the number of air holes. The shielding assembly comprises a shielding block. A first placement slot is arranged on one side of each air hole, a first telescopic rod is fixedly arranged in the first placement slot, the telescopic end of the first telescopic rod is fixedly connected with the corresponding shielding block, and the movement of the telescopic rod in the first telescopic rod drives the movement of the corresponding shielding block, so that the internal passage of the corresponding air hole is in a closed state.

[0012] According to the above technical solution, when the sealing plate is opened, the shielding block blocks the internal passage of the corresponding air hole, thereby avoiding the flow of the external environment and the internal environment through the air hole.

[0013] The application can be further configured in a preferred example that the bottom of the placing column is provided with a first fixed plate.

[0014] The application can be further configured in a preferred example that the driving part comprises a base, the top of the base is provided with a second placing slot, the base is fixedly arranged at the bottom of the test machine body, and the inner wall bottom of the second placing slot is provided with a plurality of second telescopic rods, the telescopic end of the second telescopic rods passes through the test machine body and the first fixed plate and is connected with the bottom of the corresponding placing column.

[0015] The application can be further configured in a preferred example that the top of the sealing cover is provided with a counterweight, and the outer peripheral surface of the counterweight is outwardly extended to form a flange at the upper half.

[0016] By adopting the above technical scheme, the counterweight not only plays a role in fixing the position of the sealing plate, but also facilitates the operator to pick up the sealing plate through the counterweight.

[0017] The application can be further configured in a preferred example that the outer peripheral surface of the placing column is a rubber layer.

[0018] By adopting the above technical scheme, the rubber layer makes the hollow tube and the placing column have no gap, thereby avoiding the internal environment of the ultraviolet test machine from communicating with the external environment through the gap between the hollow tube and the placing column.

[0019] In summary, the application has at least one of the following beneficial technical effects: 1. By arranging the placing column and the hollow tube, in the sampling process, the placing column enters the hollow tube provided with the sealing plate at the top, at this time the sample is located in the hollow tube, after the sealing plate is opened, the placing column separates the internal environment of the ultraviolet test machine from the external environment, avoids the interference of the external environment on the internal environment during sampling, and at the same time, the sampling space is enlarged, which facilitates the operator to quickly and correctly pick up the test sample.

[0020] 2. By arranging the air hole, when the placing column starts to contact the hollow tube, the placing column can quickly and smoothly move in the hollow tube.

[0021] 3. By arranging the shielding block, when the sealing plate is opened, the shielding block blocks the internal passage corresponding to the air hole, thereby avoiding the internal environment from communicating with the external environment through the air hole. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 is a whole half-section structure schematic diagram of the embodiment; Figure 2 is Figure 1 is an enlarged structure schematic diagram of A in Figure 3 isFigure 1 Schematic diagram of top view structure of placing column.

[0023] In the figure, 1, test machine body; 11, hollow tube; 12, sealing cover; 13, placing column; 14, placing plate; 2, air hole; 3, shielding assembly; 21, first placing groove; 22, first telescopic rod; 31, shielding block; 131, first fixed plate; 4, base; 41, second placing groove; 42, second telescopic rod; 5, counterweight; 6, rubber layer. DETAILED DESCRIPTION

[0024] The application will be further described in detail below with reference to the accompanying drawings.

[0025] Embodiment: Referring to Figure 1 The application discloses a kind of ultraviolet test machine, including test machine body 1.The top of test machine body 1 is fixed with a plurality of hollow tubes 11.The top of each hollow tube 11 is placed with sealing cover 12.Sealing cover 12 is provided with sealing strip on the side of contact with corresponding hollow tube 11.The top of sealing cover 12 is provided with counterweight 5.Counterweight 5 plays the role of further fixing the position of sealing cover 12, when sealing cover 12 is subjected to external small external force, the position of sealing cover 12 will not change.

[0026] Counterweight 5 outer circumferential surface upper half extends outward to form flange.Counterweight 5 on flange also facilitates operator to pick up sealing cover 12 by counterweight 5.

[0027] Referring to Figure 1 As shown in the figure, the inner wall bottom of test machine body 1 is provided with a plurality of placing columns 13.The outer circumferential surface of placing column 13 is rubber layer 6 (rubber layer 6 can be replaced).The bottom of each placing column 13 is fixedly provided with first fixed plate 131.The top of each placing column 13 is fixedly provided with placing plate 14.Each test sample is placed on corresponding placing plate 14 separately.Ultraviolet lamp, temperature and humidity control system and condensation system in test machine body 1 start to work.The area of placing plate 14 is large enough relative to test sample, after placing, part of test sample will not exceed the range of placing plate 14.

[0028] Placing column 13 is located directly below corresponding hollow tube 11, and the cross section shape of placing column 13 is matched with the cross section shape of the inner hole of hollow tube 11.The cross section of placing column 13 is circular.When first fixed plate 131 is in contact with the inner wall bottom of test machine body 1, test sample is at the middle layer space inside test machine body 1.At the same time, hollow tube 11 is located at a distance above test sample and will not block ultraviolet irradiation to test sample.

[0029] A plurality of driving parts are provided on test machine body 1, and the driving part drives corresponding placing column 13 to enter the inside of hollow tube 11.

[0030] Each driving part comprises a base 4, the top of the base 4 is provided with a second placing groove 41, the base 4 is fixedly arranged at the bottom of the testing machine body 1, the inner wall bottom of the second placing groove 41 is provided with a plurality of second extension rods 42, the extension end of the second extension rod 42 penetrates the testing machine body 1 and the first fixed plate 131 and is connected with the bottom of the corresponding placing column 13. The testing machine body 1 is further provided with a PLC controller (not shown in the figure), the PLC controller is electrically connected with the plurality of second extension rods 42, and the PLC controller can individually control any one of the second extension rods 42.

[0031] Referring to Figure 1 and Figure 3 , the placing column 13 is provided with a plurality of air holes 2, the vertical section of the air hole 2 is L-shaped, and the placing plate 14 does not shield any air hole 2. The plurality of air holes 2 are uniformly distributed around the placing plate 14.

[0032] When the operator needs to take one of the test samples, first start the second extension rod 42, the second extension rod 42 drives the placing column 13 to move towards the corresponding hollow tube 11. After moving a distance, the placing column 13 starts to contact the hollow tube 11. The second extension rod 42 continues to drive the placing column 13 to move upward. The pushing force of the second extension rod 42 is greater than the frictional force between the placing column 13 and the hollow tube 11.

[0033] The placing column 13 stops moving in the hollow tube 11 after a distance, at this time the test sample is close to the sealing cover 12. And the position height of the test sample is higher than the position height of the top of the testing machine body 1.

[0034] Referring to Figure 1 and Figure 2 , the placing column 13 is provided with a plurality of shielding assemblies 3, the number of the shielding assemblies 3 is equal to the number of the air holes 2. The shielding assembly 3 comprises a shielding block 31.

[0035] One side of each of the air holes 2 is provided with a first placing groove 21, and a first extension rod 22 is fixedly arranged in the first placing groove 21. The plurality of first extension rods 22 are electrically connected with the PLC controller. The PLC controller starts or stops the plurality of first extension rods 22 in the same placing column 13 at the same time through the preset program.

[0036] The telescopic end of the first telescopic rod 22 is fixed with the corresponding shielding block 31, and the movement of the telescopic rod in the first telescopic rod 22 drives the movement of the corresponding shielding block 31, so that the internal passage of the corresponding air hole 2 is in a closed state. The top cross section of the air hole 2 is rectangular, and the top cross section of the shielding block 31 is also rectangular. The width of the top cross section of the shielding block 31 is adapted to the width of the top cross section of the air hole 2. The length of the top cross section of the shielding block 31 is 1.3 times the length of the top cross section of the air hole 2.

[0037] When one side of the shielding block 31 is in contact with one side of the inner wall of the air hole 2, the entire inside of the air hole 2 is blocked, and air cannot pass through the air hole 2.

[0038] During the process of taking out the test sample, the horizontal section of the air hole 2 is always located below the hollow tube 11 when the placement column 13 moves. At the same time, the several shielding blocks 31 do not shield the corresponding air holes 2.

[0039] When the operator is about to open the sealing cover 12, the PLC controller simultaneously starts the several first telescopic rods 22 in the same placement column 13, and the first telescopic rod 22 drives the corresponding shielding block 31 to move, so that one side of the shielding block 31 is in contact with one side of the inner wall of the corresponding air hole 2, and at this time, air cannot circulate in the air hole 2.

[0040] After the operator opens the sealing cover 12, the test sample is taken out. After the test sample is taken out, the operator covers the sealing cover 12 again.

[0041] When other samples are taken out subsequently, the above operation process can be followed.

[0042] The embodiments of the specific implementation are the preferred embodiments of the present application, but do not limit the protection scope of the present application, so that: any equivalent changes made according to the structure, shape, principle of the present application should be covered within the protection scope of the present application.

Claims

1. An ultraviolet tester comprising a tester body (1), characterized in that, The top of the test machine body (1) is fixed with a plurality of hollow tubes (11), the top of each hollow tube (11) is placed with a sealing cover (12), the inner wall of the test machine body (1) is provided with a plurality of placing columns (13) at the bottom, the top of the placing column (13) is fixedly provided with a placing plate (14), the placing column (13) is located directly below the corresponding hollow tube (11), and the cross-sectional shape of the placing column (13) is matched with the cross-sectional shape of the inner hole of the hollow tube (11). A plurality of driving parts are arranged on the test machine body (1), and the driving parts drive the corresponding placing columns (13) to enter the inside of the hollow tubes (11).

2. The ultraviolet test machine of claim 1, wherein: A plurality of air holes (2) are arranged on each placing column (13), the vertical cross section of the air hole (2) is L-shaped, and the placing plate (14) does not shield any air hole (2).

3. The ultraviolet testing machine of claim 2, wherein: A plurality of shielding assemblies (3) are arranged on the placing column (13), and the number of the shielding assemblies (3) is equal to the number of the air holes (2). The shielding assembly (3) comprises a shielding block (31). A first placing groove (21) is arranged on one side of each air hole (2), a first telescopic rod (22) is fixedly arranged in the first placing groove (21), the telescopic end of the first telescopic rod (22) is fixed with the corresponding shielding block (31), and the movement of the first telescopic rod (22) drives the movement of the corresponding shielding block (31), so that the internal passage of the corresponding air hole (2) is in a closed state.

4. The ultraviolet testing machine of claim 3, wherein: The bottom of the placing column (13) is provided with a first fixed plate (131).

5. The ultraviolet testing machine of claim 4, wherein: The driving part comprises a base (4), a second placing groove (41) is arranged on the top of the base (4), the base (4) is fixedly arranged at the bottom of the test machine body (1), a plurality of second telescopic rods (42) are arranged on the inner wall of the second placing groove (41) at the bottom, the telescopic end of the second telescopic rod (42) penetrates through the test machine body (1) and the first fixed plate (131) and is connected with the bottom of the corresponding placing column (13).

6. The ultraviolet testing machine of claim 5, wherein: The top of the sealing cover (12) is provided with a counterweight (5), and the outer peripheral surface of the counterweight (5) is outwardly extended to form a flange.

7. An ultraviolet test machine according to claim 6, wherein: The outer peripheral surface of the placing column (13) is a rubber layer (6).

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