A device for testing heat resistance of polymer modified hot melt adhesive

Abstract

The utility model provides a kind of polymer modified hot melt adhesive heat resistance testing device, it includes: shell;Test unit, the test unit is arranged in the inside of the shell, and two are oppositely arranged;Display screen, the display screen is provided with two, oppositely arranged in the both ends of the side of the shell, and with the test unit is connected;Filtering box, the filtering box is arranged in the other side of the shell;Gas delivery unit, the gas delivery unit is arranged in the top of the shell, respectively with the filtering box and the test unit is connected.In after testing, start air suction pump work, by air suction pump and second gas pipe, first gas pipe and air suction pipe can the gas in the inside of test unit is input to the inside of filtering box, then by filter screen and activated carbon filter layer in the inside of filtering box to gas filtration, and then harmful substance in gas can be filtered out, then by air outlet hole to the outside, avoid to cause influence to staff, convenient to use, more environmental protection.

Description

Technical Field

[0001] This utility model relates to the field of melt adhesive performance testing, and in particular to a device for testing the heat resistance of polymer modified hot melt adhesives. Background Technology

[0002] There are many parameters for hot melt adhesives, such as curing time, softening point, recommended operating temperature, melt viscosity, shear strength, etc. The softening point of hot melt adhesive is the temperature at which the hot melt adhesive begins to flow, and it can be used as a general indicator to measure the heat resistance, melting ease, and drying time of the hot melt adhesive.

[0003] Current hot melt adhesive heat resistance testing devices cannot handle the gas inside the device during testing. When hot melt adhesive is heated to the point of melting, it produces harmful gases, which can cause damage to the health of workers if inhaled. Utility Model Content

[0004] To address the aforementioned problems, this invention proposes a device for testing the heat resistance of polymer-modified hot melt adhesives, thereby resolving the issues present in the prior art.

[0005] To achieve the above objectives, the present invention provides a heat resistance testing device for polymer-modified hot melt adhesive, comprising: a shell;

[0006] A test unit, wherein two test units are arranged inside the housing and are positioned opposite each other;

[0007] The display screen has two displays, which are arranged opposite each other at both ends of one side of the housing and are connected to the test unit;

[0008] A filter box, which is disposed on the other side of the housing;

[0009] A gas delivery unit is arranged on the top of the housing and is connected to the filter box and the test unit respectively.

[0010] The filter box is equipped with a filter screen inside, an activated carbon filter layer is provided at the bottom of the filter box, and an air outlet is provided at the bottom of the filter box.

[0011] Furthermore, the gas supply unit includes a first gas supply pipe disposed on the top of the housing, a second gas supply pipe communicating with the first gas supply pipe, an air pump disposed on the top of the filter box, and two air extraction pipes connected to both ends of the first gas supply pipe.

[0012] The input end of the air pump is connected to the second air supply pipe, and the output end of the air pump is connected to the interior of the filter box;

[0013] One end of the extraction tube is connected to the test unit.

[0014] Furthermore, the testing unit includes a storage tray disposed at one end inside the housing, a cylindrical cover disposed on top of the storage tray, a receiving cylinder disposed at the bottom of the storage tray, an electromagnetic coil disposed inside the cylindrical cover, an infrared transmitting and receiving module, and a temperature sensing probe.

[0015] A protrusion is provided at one end of the receiving cylinder, and the infrared transmitting and receiving module is disposed inside the protrusion.

[0016] Mounting blocks are provided at both ends of the housing, and the temperature sensing probe is disposed in the mounting blocks, with one end extending into the interior of the cylindrical cover;

[0017] The storage tray has a drain opening in the middle;

[0018] One end of the exhaust pipe is connected to the inside of the shroud.

[0019] Furthermore, the bottom of the receiving cylinder is provided with a cylinder cover, the outer wall of the bottom of the receiving cylinder is provided with external threads, and the inner wall of the cylinder cover is provided with corresponding internal threads.

[0020] Furthermore, an electric telescopic rod is provided on the inner top of the housing, and a connecting block is connected to the output end of the electric telescopic rod. The two sides of the connecting block are fixedly connected to the protrusion and the storage tray.

[0021] Furthermore, the bottom of the housing is provided with multiple support legs.

[0022] Compared with the prior art, the beneficial effects of this utility model are as follows: After the test is completed, the air pump is started. The air pump, the second air supply pipe, the first air supply pipe and the air extraction pipe can input the gas inside the test unit into the filter box. Then the gas is filtered through the filter screen and activated carbon filter layer inside the filter box, thereby filtering out harmful substances in the gas. Then it is discharged outward through the air outlet, avoiding the impact on the staff, making it convenient to use and more environmentally friendly.

[0023] To better understand and implement this invention, the following detailed description is provided in conjunction with the accompanying drawings. Attached Figure Description

[0024] Figure 1 This is a first three-dimensional structural schematic diagram of this utility model;

[0025] Figure 2 This is a schematic diagram of the second three-dimensional structure of this utility model;

[0026] Figure 3 This is a schematic diagram of the internal structure of the shell in this utility model;

[0027] Figure 4 This is a schematic diagram of the internal structure of the middle cylinder cover of this utility model;

[0028] Figure 5 This is a cross-sectional view of the filter box in this utility model.

[0029] In the diagram: 1. Shell; 2. Support leg; 3. First air supply pipe; 4. Mounting block; 5. Display screen; 6. Second air supply pipe; 7. Air pump; 8. Filter box; 9. Cylinder cover; 10. Storage tray; 11. Receiving cylinder; 12. Cylinder cover; 13. Temperature sensing probe; 14. Electric telescopic rod; 15. Protrusion; 16. Connecting block; 17. Electromagnetic coil; 18. Infrared transmitting and receiving module; 19. Filter screen; 20. Activated carbon filter layer; 21. Air outlet; 22. Air extraction pipe; 23. Leak. Detailed Implementation

[0030] To provide a clearer understanding of the technical features, objectives, and effects of this utility model, specific embodiments of this utility model are now described with reference to the accompanying drawings. However, the scope of protection of this utility model is not limited to the following description.

[0031] Reference Figure 1-5 As shown, a heat resistance testing device for polymer-modified hot melt adhesive includes: a housing 1; a testing unit, two of which are arranged inside the housing 1 and opposite to each other; two displays 5, which are arranged opposite to each other at both ends of one side of the housing 1 and connected to the testing unit; a filter box 8, which is arranged on the other side of the housing 1; and a gas supply unit, which is arranged on the top of the housing 1 and connected to the filter box 8 and the testing unit respectively. Multiple support legs 2 are provided at the bottom of the housing 1.

[0032] The filter box 8 is equipped with a filter screen 19 inside, an activated carbon filter layer 20 is provided at the bottom of the filter box 8, and an air outlet 21 is provided at the bottom of the filter box 8.

[0033] The gas supply unit includes a first gas supply pipe 3 located on the top of the housing 1, a second gas supply pipe 6 connected to the first gas supply pipe 3, a vacuum pump 7 located on the top of the filter box 8, and two vacuum pipes 22 connected to both ends of the first gas supply pipe 3; the input end of the vacuum pump 7 is connected to the second gas supply pipe 6, and the output end of the vacuum pump 7 is connected to the interior of the filter box 8; one end of the vacuum pipe 22 is connected to the test unit.

[0034] This utility model provides a technical solution where, during use, hot melt adhesive is placed inside a testing unit, and the heat resistance of the hot melt adhesive is tested through the testing unit. The real-time temperature during the test is fed back to the display screen 5 for easy viewing by staff. After the test is completed, the vacuum pump 7 is started. Through the vacuum pump 7, the second air supply pipe 6, the first air supply pipe 3, and the vacuum pipe 22, the gas inside the testing unit is introduced into the filter box 8. The gas is then filtered through the filter screen 19 and the activated carbon filter layer 20 inside the filter box 8, thereby filtering out harmful substances from the gas. The gas is then discharged outward through the air outlet 21, avoiding any impact on staff, making it convenient to use, and more environmentally friendly.

[0035] Preferably, the test unit includes a storage tray 10 disposed at one end inside the housing 1, a cylindrical cover 9 disposed at the top of the storage tray 10, a receiving cylinder 11 disposed at the bottom of the storage tray 10, an electromagnetic coil 17 disposed inside the cylindrical cover 9, an infrared transmitting and receiving module 18, and a temperature sensing probe 13; a protrusion 15 is provided at one end of the receiving cylinder 11, and the infrared transmitting and receiving module 18 is disposed inside the protrusion 15; mounting blocks 4 are provided at both ends of the housing 1, the temperature sensing probe 13 is disposed inside the mounting block 4, and one end extends into the interior of the cylindrical cover 9; a vent 23 is provided in the middle of the storage tray 10; one end of the suction pipe 22 is connected to the interior of the cylindrical cover 9, a cylinder cover 12 is provided at the bottom of the receiving cylinder 11, the outer wall of the bottom of the receiving cylinder 11 is provided with external threads, and the inner wall of the cylinder cover 12 is provided with corresponding internal threads.

[0036] Specifically, when testing hot melt adhesive, the hot melt adhesive is first placed on the storage tray 10, then a steel ball is placed in the middle of the storage tray 10. The storage tray 10 is then connected to the casing 9. The electromagnetic coil 17 inside the casing 9 is activated, raising the temperature inside the casing 9 to conduct a heat resistance test on the hot melt adhesive. When the hot melt adhesive melts, the steel ball falls from the outlet 23 into the receiving cylinder 11. The infrared transmitting and receiving module 18 senses the steel ball; the detection of the steel ball indicates that the hot melt adhesive has melted, and this information is displayed on the display screen 5 for easy viewing by staff. The threaded casing 12 is easy for staff to remove, facilitating the removal of the steel ball from inside the receiving cylinder 11. The temperature sensing probe 13 senses the temperature inside the casing 9 and displays it on the display screen 5 for easy viewing by staff.

[0037] Preferably, an electric telescopic rod 14 is provided on the inner top of the housing 1, and a connecting block 16 is connected to the output end of the electric telescopic rod 14. The two sides of the connecting block 16 are fixedly connected to the protrusion 15 and the storage tray 10.

[0038] Specifically, the electric telescopic rod 14 can drive the connecting block 16, the storage tray 10, and the receiving cylinder 11 to move up and down. Moving the storage tray 10 downward can separate the storage tray 10 from the cylinder cover 9 and move the storage tray 10 out of the housing 1 for easy handling of hot melt adhesive.

[0039] Workflow: During use, the hot melt adhesive is placed inside the test unit, and its heat resistance is tested through the test unit. The real-time temperature during the test is displayed on the screen 5 for easy viewing by staff. After the test is completed, the vacuum pump 7 is started. The vacuum pump 7, together with the second air supply pipe 6, the first air supply pipe 3, and the vacuum pipe 22, can input the gas inside the test unit into the filter box 8. The gas is then filtered through the filter screen 19 and the activated carbon filter layer 20 inside the filter box 8.

[0040] Hot melt adhesive is placed on storage tray 10, and then a steel ball is placed in the middle of storage tray 10. Then storage tray 10 is connected to cylinder 9. The electromagnetic coil 17 inside cylinder 9 is activated to raise the temperature inside cylinder 9, thereby conducting a heat resistance test on hot melt adhesive. When hot melt adhesive melts, the steel ball falls from the outlet 23 into the receiving cylinder 11. The set infrared transmitting and receiving module 18 senses the steel ball. Once the steel ball is sensed, it means that the hot melt adhesive has melted, and the situation is reflected on display screen 5.

[0041] The electric telescopic rod 14 can drive the connecting block 16, the storage tray 10, and the receiving cylinder 11 to move up and down. Moving the storage tray 10 downward can separate the storage tray 10 from the cylinder cover 9 and move the storage tray 10 out of the interior of the housing 1.

[0042] The above-disclosed embodiments are merely preferred embodiments of the present utility model and should not be construed as limiting the scope of the present utility model. Therefore, any equivalent variations made in accordance with the claims of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A device for testing the heat resistance of polymer-modified hot melt adhesive, characterized in that, include: Shell (1); The test unit is arranged inside the housing (1), and two test units are arranged opposite each other; Two display screens (5) are provided, which are arranged opposite each other at both ends of one side of the housing (1) and connected to the test unit; A filter box (8) is disposed on the other side of the housing (1); A gas delivery unit is arranged on the top of the housing (1) and is connected to the filter box (8) and the test unit respectively; The filter box (8) is equipped with a filter screen (19) inside, and an activated carbon filter layer (20) is provided at the bottom of the filter box (8). An air outlet (21) is provided at the bottom of the filter box (8).

2. The apparatus for testing the heat resistance of polymer-modified hot melt adhesives according to claim 1, characterized in that: The gas delivery unit includes a first gas delivery pipe (3) disposed on the top of the housing (1), a second gas delivery pipe (6) connected to the first gas delivery pipe (3), a vacuum pump (7) disposed on the top of the filter box (8), and two vacuum pipes (22) connected to both ends of the first gas delivery pipe (3). The input end of the air pump (7) is connected to the second air supply pipe (6), and the output end of the air pump (7) is connected to the interior of the filter box (8). One end of the extraction tube (22) is connected to the test unit.

3. The apparatus for testing the heat resistance of polymer-modified hot melt adhesive according to claim 2, characterized in that: The test unit includes a storage tray (10) located at one end inside the housing (1), a cylindrical cover (9) located on the top of the storage tray (10), a receiving cylinder (11) located at the bottom of the storage tray (10), an electromagnetic coil (17) located inside the cylindrical cover (9), an infrared transmitting and receiving module (18), and a temperature sensing probe (13). One end of the receiving cylinder (11) is provided with a protrusion (15), and the infrared transmitting and receiving module (18) is disposed inside the protrusion (15); Mounting blocks (4) are provided at both ends of the housing (1), and the temperature sensing probe (13) is located inside the mounting block (4), with one end extending into the interior of the cylindrical cover (9); The storage tray (10) has a vent (23) in the middle. One end of the exhaust pipe (22) is connected to the interior of the shroud (9).

4. The apparatus for testing the heat resistance of polymer-modified hot melt adhesive according to claim 3, characterized in that: The bottom of the receiving cylinder (11) is provided with a cylinder cover (12), the outer wall of the bottom of the receiving cylinder (11) is provided with external threads, and the inner wall of the cylinder cover (12) is provided with corresponding internal threads.

5. The apparatus for testing the heat resistance of polymer-modified hot melt adhesives according to claim 3, characterized in that: An electric telescopic rod (14) is provided on the inner top of the housing (1). The output end of the electric telescopic rod (14) is connected to a connecting block (16). The two sides of the connecting block (16) are fixedly connected to the protrusion (15) and the storage tray (10).

6. The apparatus for testing the heat resistance of polymer-modified hot melt adhesives according to claim 1, characterized in that: The bottom of the housing (1) is provided with multiple support legs (2).

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