PVC sheet softening testing device

Abstract

The utility model relates to a PVC sheet softening testing device, and relates to the field of machinery. The device comprises a fixed base, a first supporting rod, a second supporting rod, a mounting plate, a rotating shaft, a rotating disc, an angle scale, a pointer, a supporting table, a cooling liquid storage barrel, a test piece, a clamping assembly and a controller. According to the PVC sheet softening testing device disclosed by the utility model, the clamping assembly is convenient for clamping a test sheet, cooling liquid is automatically and gradually heated through the temperature control unit in the supporting table, angle data of the angle scale corresponding to each temperature is recorded, and a hardening and bending temperature coefficient is automatically calculated according to the angle data through the controller; the influence of human factors on the test result is reduced, and the test data can be recorded and analyzed in real time.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of machinery, in particular to a PVC sheet softening testing device. BACKGROUND

[0002] In the field of automobile sunroof manufacturing, the softness of a PVC sheet is an important performance index. At present, the testing of the softness of a PVC sheet in the industry mainly relies on manual operation and simple measuring tools, and lacks standardized and automated testing devices. The conventional method is to manually immerse the PVC sheet in a cooling liquid, manually hold a weight and read the angle data, which is complicated and the data accuracy is greatly affected by human factors.

[0003] The prior art lacks automation and precision, and the test results may differ greatly due to different operators, and cannot meet the testing requirements of high precision and high efficiency. CONTENT OF THE UTILITY MODEL

[0004] In order to solve the problem that the existing PVC sheet softening testing device has its own design characteristics, the present application provides a PVC sheet softening testing device.

[0005] The PVC sheet softening testing device provided by the application adopts the following technical scheme: a fixing base, a first supporting rod arranged at one end of the fixing base, a second supporting rod arranged opposite to the first supporting rod, an installation plate arranged on the upper end faces of the first supporting rod and the second supporting rod, a rotating shaft arranged at the middle position of the installation plate, a rotating disc connected with the rotating shaft, an angle measuring member connected with the rotating disc, an angle disc fixedly connected with the rotating disc, a pointer fixedly connected with the installation plate, a supporting table arranged on the installation plate, a cooling liquid storage barrel connected with the supporting table, a test sheet arranged in the cooling liquid storage barrel, a clamping assembly for clamping the test sheet, and a controller arranged at one side of the fixing base, wherein the inner cavity of the supporting table is provided with a temperature control unit.

[0006] By adopting the above technical scheme, the clamping assembly can conveniently clamp the test sheet, the temperature control unit in the supporting table can automatically gradually warm the cooling liquid, the angle data of the angle disc corresponding to each temperature is recorded, and the controller can automatically calculate the hardening bending temperature coefficient according to the angle data, thereby reducing the influence of human factors on the test results and enabling the test data to be recorded and analyzed in real time.

[0007] Optionally, the first support rod and the second support rod are respectively arranged as electric telescopic shafts, and the telescopic ends of the first support rod and the second support rod are fixedly connected with the mounting plate.

[0008] By adopting the above technical scheme, the first support rod and the second support rod are arranged as electric telescopic shafts, so that the PVC test piece can be completely and uniformly soaked in the cooling liquid.

[0009] Optionally, the angle measuring member comprises a hanging rope connected with the rotating shaft, a first pulley connected with one end of the hanging rope, a first weight disc arranged at the lower end of the first pulley, a second pulley connected with the other end of the hanging rope, and a second weight disc arranged at the lower end of the second pulley, the first weight disc is fixedly connected with one end of the hanging rope, and the second weight disc is fixedly connected with the other end of the hanging rope.

[0010] By adopting the above technical scheme, the first weight disc and the second weight disc are convenient for placing counterweight weights, so that the rotating disc is kept stable, and the influence of external factors on the test data caused by the rotation of the rotating disc is avoided.

[0011] Optionally, the first pulley and the second pulley are respectively arranged on a support connected with the mounting plate, and the support is fixedly connected with the mounting plate.

[0012] By adopting the above technical scheme, the first pulley and the second pulley are convenient for being installed, so that the first pulley and the second pulley support the hanging rope.

[0013] Optionally, the clamping assembly comprises a first connecting rod fixedly connected with the lower end surface of the rotating shaft, a first clamping block fixedly connected with the first connecting rod, a second connecting rod fixedly arranged at the lower end surface of the mounting plate, and a second clamping block fixedly arranged at the other end of the second connecting rod, the first clamping block and the second clamping block are arranged on the same axis, and the first clamping block and the second clamping block are respectively arranged as electric clamps or hydraulic clamps.

[0014] By adopting the above technical scheme, the test piece is convenient for being quickly clamped.

[0015] Optionally, the temperature control unit is composed of a heating wire arranged in the support table, the heating wire is arranged as an electric heating wire, and the temperature control unit is electrically connected with the controller. By adopting the above technical scheme, the heating wire is convenient for gradually warming the cooling liquid in the cooling liquid storage barrel, so that the bending degree of the test piece under different temperatures is convenient for being tested.

[0016] Optionally, it further comprises an adjusting hole arranged on the second support rod and matched with the second clamping block, and the inner wall of the adjusting hole is arranged as a smooth arc surface.

[0017] By adopting the technical scheme, the design of the adjusting hole is that when the test piece is bent, the overall length of the test piece is shortened, thereby driving the second clamping block to automatically move relative to the first clamping block.

[0018] Optionally, the temperature testing unit is further arranged in the cooling liquid storage barrel, and the temperature testing unit is a temperature sensor.

[0019] By adopting the technical scheme, the temperature sensor is convenient for real-time monitoring of the temperature of the cooling liquid.

[0020] In summary, the present application has the following beneficial technical effects:

[0021] 1. The clamping assembly is convenient for clamping the test piece, the temperature control unit in the support table automatically gradually warms the cooling liquid, the angle data of the angle disc corresponding to each temperature is recorded, and the hardening bending temperature coefficient is automatically calculated by the controller according to the angle data, thereby reducing the influence of human factors on the test result, and the test data can be recorded and analyzed in real time.

[0022] 2. The adjusting hole is further arranged on the second support rod and matched with the second clamping block, the design of the adjusting hole is that when the test piece is bent, the overall length of the test piece is shortened, thereby driving the second clamping block to automatically move relative to the first clamping block. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 is a structural schematic view of the overall structure of the PVC sheet softening test device of the present application;

[0024] Figure 2 is a structural schematic view of the clamping assembly in the PVC sheet softening test device of the present application;

[0025] Figure 3 is a structural schematic view of the angle measuring member in the PVC sheet softening test device of the present application; Figure 2 is a structural schematic view of the front view of the angle measuring member;

[0026] Figure 4 is a structural schematic view of the angle measuring member in the PVC sheet softening test device of the present application;

[0027] EXPLANATION OF REFERENCE NUMBERS: 100, test piece; 1, fixed base; 2, support table; 31, first support rod; 32, second support rod; 4, mounting plate; 51, rotating shaft; 52, rotating disc; 53, angle disc; 54, hanging rope; 551, first pulley; 5511, first weight disc; 552, second pulley; 5521, second weight disc; 61, first connecting rod; 611, first clamping block; 62, second connecting rod; 621, second clamping block; 7, controller; 8, cooling liquid storage barrel; 9, pointer. Detailed Implementation

[0028] The present application will be further described in detail below with reference to the accompanying drawings.

[0029] Please see Figure 1 , Figure 2 , Figure 3 and Figure 4 This application discloses a PVC sheet softening test device. It includes a fixed base 1, a first support rod 31 disposed at one end of the fixed base 1, a second support rod 32 disposed opposite to the first support rod 31, a mounting plate 4 disposed on the upper surfaces of the first and second support rods, a rotating shaft 51 disposed in the middle of the mounting plate 4, a turntable 52 connected to the rotating shaft 51, an angle measuring component connected to the turntable 52, an angle disk 53 fixedly connected to the turntable 52, a pointer 9 fixedly connected to the mounting plate 4, a support platform 2 disposed on the mounting plate 4, a coolant storage tank 8 connected to the support platform 2, and a coolant storage tank... The storage tank 8 contains a test piece 100, a clamping assembly for clamping the test piece 100, and a controller 7 located on one side of the fixed base 1. The support platform 2 has a temperature control unit inside. In this invention, the clamping assembly facilitates clamping the test piece 100. The temperature control unit inside the support platform 2 automatically heats the coolant gradually and records the angle data of the angle plate 53 corresponding to each temperature. The controller 7 automatically calculates the hardening bending temperature coefficient from the angle data, reducing the influence of human factors on the test results and enabling real-time recording and analysis of test data.

[0030] Please refer to details. Figure 1 , Figure 2 and Figure 3 A PVC sheet softening test device includes a fixed base 1, a first support rod 31 disposed at one end of the fixed base 1, and a second support rod 32 disposed opposite to the first support rod 31. The first support rod 31 and the second support rod 32 are respectively configured as electric telescopic shafts, and the telescopic ends of the first support rod 31 and the second support rod 32 are fixedly connected to the mounting plate 4. The first support rod 31 and the second support rod 32 are configured as electric telescopic shafts to ensure that the PVC test sheet 100 can be completely and uniformly immersed in the coolant.

[0031] Please refer to details. Figure 1 , Figure 2 and Figure 4, the mounting plate 4 is arranged on the upper end surface of the first support rod 31 and the second support rod, the rotating shaft 51 is arranged at the middle position of the mounting plate 4, the rotating disc 52 is connected with the rotating shaft 51, the angle measuring component is connected with the rotating disc 52, the angle measuring component comprises the hanging rope 54 connected with the rotating shaft 51, the first pulley 551 connected with one end of the hanging rope 54, the first weight disc 5511 arranged at the lower end of the first pulley 551, the second pulley 552 connected with the other end of the hanging rope 54 and the second weight disc 5521 arranged at the lower end of the second pulley 552, the first weight disc 5511 is fixedly connected with one end of the hanging rope 54, the second weight disc 5521 is fixedly connected with the other end of the hanging rope 54, the first weight disc 5511 and the second weight disc 5521 facilitate the placement of counterweight, thereby facilitating the stable holding of the rotating disc 52, and the rotation of the rotating disc 52 caused by external factors is avoided, thereby avoiding the influence on the test data.

[0032] For details, see Figure 4 , the first pulley 551 and the second pulley 552 are respectively arranged on the support and connected with the mounting plate 4, and the support is fixedly connected with the mounting plate 4, thereby facilitating the installation of the first pulley 551 and the second pulley 552, and facilitating the support of the first pulley 551 and the second pulley 552 on the hanging rope 54.

[0033] For details, see Figure 1 、 Figure 2 and Figure 3 , the angle disc 53 is fixedly connected with the rotating disc 52, the pointer 9 is fixedly connected with the mounting plate 4, the support table 2 is arranged on the mounting plate 4, the cooling liquid storage barrel 8 is connected with the support table 2, the test piece 100 is arranged in the cooling liquid storage barrel 8, the clamping assembly for clamping the test piece 100, and the controller 7 arranged on one side of the fixed base 1, the clamping assembly comprises the first connecting rod 61 fixedly connected with the lower end surface of the rotating shaft 51, the first clamping block 611 fixedly connected with the first connecting rod 61, the second connecting rod 62 fixedly arranged on the lower end surface of the mounting plate 4, and the second clamping block 621 fixedly arranged on the other end of the second connecting rod 62, the first clamping block 611 and the second clamping block 621 are arranged on the same axis, and the first clamping block 611 and the second clamping block 621 are respectively arranged as electric clamps or hydraulic clamps, thereby facilitating the rapid clamping of the test piece 100.

[0034] For details, see Figure 1 、 Figure 2 and Figure 3 , the temperature control unit is composed of the heating wire arranged in the support table 2, the heating wire is arranged as an electric heating wire, and the temperature control unit is electrically connected with the controller 7, the heating wire facilitates the gradual warming of the cooling liquid in the cooling liquid storage barrel 8, thereby facilitating the test of the bending degree of the test piece 100 under different temperatures.

[0035] Specifically refer to Figure 1 、 Figure 2 and Figure 3 , also includes the adjustment hole matched with the second clamping block 621 on the second supporting rod 32, and the inner wall of the adjustment hole is set as a smooth circular arc surface. The design of the adjustment hole is that when the test piece 100 is bent, the overall length of the test piece 100 is shortened, thereby driving the second clamping block 621 to move automatically in the direction relative to the first clamping block 611.

[0036] Specifically refer to Figure 1 , and further comprising a temperature testing unit arranged in the cooling liquid storage barrel 8, the temperature testing unit is arranged as a temperature sensor, and the temperature sensor is convenient for monitoring the temperature of the cooling liquid in real time.

[0037] The implementation principle of the PVC sheet softening test device according to the embodiment of the application is as follows:

[0038] Preparation before experiment

[0039] (a) The test piece is placed in a desiccator at room temperature for 24 hours.

[0040] (b) After being placed, the test piece is soaked in a test liquid at a specified temperature for a specified time (c) After being soaked for a specified time, the test piece is taken out, the test liquid on the surface of the test piece is wiped off with paper, and the test piece is placed in a desiccator for about 30 minutes.

[0041] (e) The operations of (a)-(b) are repeated for three test pieces.

[0042] Test explanation

[0043] 1. The weight of the weighing weight is set to 5g, the radius of the angle disc is set to 2.8cm, and the formula is brought in when G=3170kgf / cm 3 , θ=1.49° Test steps:

[0044] 1. The cooling storage barrel and the cooling liquid are placed in a low-temperature box, and the temperature is set to -30°C.

[0045] 2. When the temperature of the cooling liquid reaches the set value of -30°, the cooling storage barrel and the cooling liquid are taken out,

[0046] 3. The prepared test piece is completely soaked in the cooling liquid and is stopped for 3 minutes.

[0047] 4. The 5g weight is added and held for 5 seconds, and then the angle data on the angle disc is read.

[0048] 5. The cooling liquid is gradually warmed, and the angle corresponding to each temperature is read.

[0049] 6. After recording the temperature and angle change value, the hardening bending temperature coefficient is calculated by the following formula.

[0050] Test Report:

[0051]

[0052] The above are preferred embodiments of the present application, and are not intended to limit the protection scope of the present application, and thus: 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. A PVC sheet softening test apparatus characterized by: The utility model provides a kind of angle measuring device for cooling liquid, including fixed base (1), the first support rod (31) of being arranged in the fixed base (1) one end, the second support rod (32) of being oppositely arranged with the first support rod (31), the mounting plate (4) of being arranged in the first support rod (31) and second support rod upper end surface, the rotating shaft (51) of being arranged in the mounting plate (4) middle position, the rotating disc (52) being connected with the rotating shaft (51), the angle measuring component being connected with the rotating disc (52), the angle scale (53) being fixedly connected with the rotating disc (52), the pointer (9) being fixedly connected with mounting plate (4), the support table (2) being arranged on the mounting plate (4), the cooling liquid storage barrel (8) being connected with the support table (2), the test piece (100) being arranged in the cooling liquid storage barrel (8), the clamping assembly for clamping test piece (100) and the controller (7) being arranged in the one side of the fixed base (1), the inner cavity of the support table (2) is provided with temperature control unit.

2. A PVC sheet softening test device according to claim 1, characterized in that: The first support rod (31) and the second support rod (32) are respectively arranged as electric telescopic shafts, and the telescopic ends of the first support rod (31) and the second support rod (32) are fixedly connected with the mounting plate (4).

3. A PVC sheet softening test apparatus according to claim 2, wherein: The angle measuring component comprises a hanging rope (54) connected with the rotating shaft (51), a first pulley (551) connected with one end of the hanging rope (54), a first weight disc (5511) arranged at the lower end of the first pulley (551), a second pulley (552) connected with the other end of the hanging rope (54), and a second weight disc (5521) arranged at the lower end of the second pulley (552), wherein the first weight disc (5511) is fixedly connected with one end of the hanging rope (54), and the second weight disc (5521) is fixedly connected with the other end of the hanging rope (54).

4. A PVC sheet softening test apparatus according to claim 3, wherein: The first pulley (551) and the second pulley (552) are respectively connected with the mounting plate (4) through mounting brackets, and the mounting brackets are fixedly connected with the mounting plate (4).

5. A PVC sheet softening test apparatus as claimed in claim 4, wherein: The clamping assembly comprises a first connecting rod (61) fixedly connected with the lower end surface of the rotating shaft (51), a first clamping block (611) fixedly connected with the first connecting rod (61), a second connecting rod (62) fixedly arranged at the lower end surface of the mounting plate (4), and a second clamping block (621) fixedly arranged at the other end of the second connecting rod (62), wherein the first clamping block (611) and the second clamping block (621) are arranged on the same axis, and the first clamping block (611) and the second clamping block (621) are respectively arranged as electric clamps or hydraulic clamps.

6. A PVC sheet softening test apparatus according to claim 5, wherein: The temperature control unit is composed of a heating wire arranged in the support table (2), the heating wire is arranged as an electric heating wire, and the temperature control unit is electrically connected with the controller (7).

7. A PVC sheet softening test apparatus according to claim 6, wherein: The adjusting hole is arranged on the second support rod (32) and matched with the second clamping block (621), and the inner wall of the adjusting hole is arranged as a smooth circular arc surface.

8. A PVC sheet softening test apparatus according to claim 7, wherein: Further comprising a temperature testing unit provided in the coolant storage tank (8), the temperature testing unit being provided as a temperature sensor.

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