A device for testing the heat insulation performance of a food packaging film

Abstract

The utility model discloses a kind of food packaging film heat insulation performance testing device, it can guarantee detection environment temperature, it can make packaging film even lay flat detection, detection result error is smaller.It includes heat insulation box and movable door, the heat insulation box is equipped with overhanging plate inside, push structure is equipped above the overhanging plate, it is characterized by: the push structure includes pressing block and push block, the pressing block both sides are equipped with push block, the pressing block is equipped with telescopic ware inside, the telescopic rod of telescopic ware passes through the pressing block and the push block connection, mobile pair is provided above the pressing block, the mobile pair includes slide rail and sliding block, the both sides of the sliding block are equipped with pneumatic cylinder, the sliding block is connected the pneumatic cylinder by fixed rod, the piston rod of the pneumatic cylinder is fixedly connected with the pressing block by downward stretching, the slide rail is installed on the top of the heat insulation box.

Description

Technical Field

[0001] This utility model relates to the field of heat insulation testing technology for packaging films, and specifically to a device for testing the heat insulation performance of food packaging films. Background Technology

[0002] With the increasing awareness of food safety and environmental protection, food packaging films are developing towards green, environmentally friendly, and biodegradable directions. The functionality of food packaging films is also being further improved. Food packaging films have good mechanical and barrier properties, including oxygen barrier, water barrier, and heat insulation properties. Heat insulation is an important property of food packaging films and needs to be tested with equipment. However, existing packaging film heat insulation performance testing devices cannot guarantee the testing environment temperature or the uniform flatness of the packaging film during testing, resulting in significant errors in the test results. Utility Model Content

[0003] To address the shortcomings of existing packaging film heat insulation performance testing devices, which cannot guarantee the testing environment temperature and cannot uniformly lay the packaging film for testing, resulting in significant errors in the test results, this utility model provides a food packaging film heat insulation performance testing device that can guarantee the testing environment temperature, enables the packaging film to be uniformly laid for testing, and minimizes the error in the test results.

[0004] This utility model provides the following technical solution:

[0005] It includes an insulated box and a movable door. The insulated box has a suspended plate inside, and a pushing structure is provided above the suspended plate. The pushing structure includes a pressure block and a pushing block. The pressure block has pushing blocks on both sides. The pressure block has a telescopic device inside. The telescopic rod of the telescopic device passes through the pressure block and connects to the pushing block. A sliding pair is provided above the pressure block. The sliding pair includes a slide rail and a slider. The slider has cylinders on both sides. The slider is connected to the cylinders through a fixed rod. The piston rod of the cylinder extends downward and is fixedly connected to the pressure block. The slide rail is installed on the top of the insulated box.

[0006] Its further features are:

[0007] A movable seat is provided behind the suspended plate. The movable seat is slidably installed at the bottom of the heat insulation box. The rotator is installed on the movable seat. A rotating plate is fitted at the end of the rotating rod of the rotator. A heating lamp is installed on the rotating plate.

[0008] The through holes on the suspended plate are arranged in an array, and a limit seat is installed at the top of each of the suspended plates. The limit seat is fixedly connected to the heat insulation box through a connecting rod.

[0009] A lifting temperature measuring platform is installed below the suspended plate, and the temperature measuring contact heads on the lifting temperature measuring platform are arranged in a row.

[0010] A dustproof chamber is installed at the top of the heat insulation box, and a test plate is installed inside the dustproof chamber;

[0011] Both the insulated enclosure and the suspended panel are designed with heat-insulating materials.

[0012] The technical effects and advantages provided by this utility model in the above technical solution are as follows:

[0013] The insulated chamber is designed with heat-insulating materials, which reduces the interference of external temperature on the temperature test environment and ensures the temperature of the test environment. The setting of the pressure block and the pushing block in the pushing structure can squeeze and flatten the packaging film to be tested, so that the packaging film can be tested in a uniform and flat state, avoiding the occurrence of "co-extrusion" of the packaging film and the error of the test results is small.

[0014] The suspended plate design facilitates temperature measurement from the bottom of the test plate. By checking whether there is packaging film at the bottom of the test plate, the measurement error can be determined, thus identifying the heat insulation properties of the packaging film. The heat insulation design of the suspended plate itself does not cause heat loss, further improving the detection accuracy and reducing detection errors. Attached Figure Description

[0015] Figure 1 This is a front view of the overall structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the overall internal structure of this utility model;

[0017] Figure 3 This is a cross-sectional view of the heat insulation box structure of this utility model;

[0018] Figure 4 This is a schematic diagram of the pushing structure of this utility model;

[0019] Figure 5 This is a schematic diagram of the movable seat structure of this utility model;

[0020] Figure 6 This is a schematic diagram of the dustproof compartment structure of this utility model.

[0021] Explanation of reference numerals in the attached figures:

[0022] 1. Insulated chamber; 2. Movable door; 3. Lifting temperature measuring platform; 4. Temperature measuring contact head; 5. Suspension plate; 6. Limit seat; 7. Connecting rod; 8. Sliding block; 9. Cylinder; 10. Pressing block; 11. Pushing block; 12. Moving seat; 13. Rotator; 14. Turning plate; 15. Heating lamp; 16. Dustproof chamber; 17. Test plate; 18. Slide rail. Detailed Implementation

[0023] This utility model provides, for example Figure 1 This invention discloses a testing device for the heat insulation performance of food packaging film, comprising an insulated chamber 1 and a movable door 2. The inner walls of the insulated chamber 1 are all designed with heat insulation material. A suspended plate 5 is provided inside the insulated chamber 1. The suspended plate 5 has heat insulation properties and through holes arranged in an array. Limiting seats 6 are installed at the apex of the suspended plate 5. The limiting seats 6 are fixedly connected to the insulated chamber 1 by connecting rods 7. A pushing structure is provided above the suspended plate 5. The pushing structure includes a film pressing block 10 and a pushing mechanism. The membrane block 11 and the pressing membrane block 10 are both provided with pushing membrane blocks 11 on both sides. The pressing membrane block 10 is provided with an expansion joint. The expansion rod of the expansion joint passes through the pressing membrane block 10 and connects with the pushing membrane block 11. A sliding pair is provided above the pressing membrane block 10. The sliding pair includes a slide rail 18 and a slider 8. A cylinder 9 is provided on both sides of the slider 8. The slider 8 is connected to the cylinder 9 through a fixed rod. The piston rod of the cylinder 9 extends downward and is fixedly connected to the pressing membrane block 10. The slide rail 18 is installed on the top of the heat insulation box 1.

[0024] See Figure 3 A lifting temperature measuring platform 3 is installed below the suspended plate 5, and temperature measuring contact heads 4 are arranged in a row on the lifting temperature measuring platform 3.

[0025] See Figure 3 , Figure 5 Behind the suspended plate 5, there is a movable seat 12. The movable seat 12 is slidably installed on the bottom of the heat insulation box 1. The rotator 13 is installed on the movable seat 12. The end of the rotating rod of the rotator 13 is fitted with a rotating plate 14. A heating lamp 15 is installed on the rotating plate 14.

[0026] See Figure 1 , Figure 6 The top of the heat insulation box 1 is equipped with a dustproof chamber 16, and the dustproof chamber 16 is equipped with a test plate 17. The number of test plates 17 is set according to the requirements.

[0027] Working principle of this utility model:

[0028] When using this utility model, first open the dustproof chamber 16, take out the test plate 17, open the movable door 2, place the test plate 17 on the suspended plate 5, close the movable door 2, and through the control system, move the heating lamp 15 above the suspended plate 5 to heat and irradiate it. After setting the time, stop the irradiation, reset the irradiation equipment, and start the lifting temperature measuring platform 3. Insert the temperature measuring contact head 4 into the suspended plate 5 and contact the test plate 17 to measure the temperature of the bottom of the test plate 17. Then take out the test plate 17, place the packaging film on the surface of the suspended plate 5, and then start the slide rail 18 and cylinder 9 in sequence to make the pressure module 10 contact the packaging film and apply pressure to it. At this time, the pushing film block 11 pushes the film block to both sides. The packaging film is pushed and flattened by the side movement. After the packaging film is flattened, an unused test plate 17 is placed on the packaging film. The movable door 2 is closed, and the heating lamp 15 is moved above the suspended plate 15. The same illumination time as the first test is set. After the illumination is completed, the temperature measuring head 4 is inserted into the suspended plate 5 to contact the packaging film for temperature measurement. At this time, there will be a difference between the first and second temperature measurements. If the difference is less than the threshold value, it means that the heat insulation performance of the packaging film is unqualified. If the difference is greater than the threshold value, it means that the heat insulation performance of the packaging film is qualified. The test is conducted under the same environmental and heating time conditions, and the packaging film does not undergo "co-extrusion". The error of the test result is small.

Claims

1. A device for testing the heat insulation performance of food packaging film, comprising an insulated chamber and a movable door, wherein a suspended plate is provided inside the insulated chamber, and a pushing structure is provided above the suspended plate, characterized in that: The pressing structure includes a pressure film block and a pushing film block. The pressure film block has pushing film blocks on both sides. The pressure film block has an internal telescopic device. The telescopic rod of the telescopic device passes through the pressure film block and connects to the pushing film block. A sliding pair is provided above the pressure film block. The sliding pair includes a slide rail and a slider. The slider has cylinders on both sides. The slider is connected to the cylinders through a fixed rod. The piston rod of the cylinder extends downward and is fixedly connected to the pressure film block. The slide rail is installed on the top of the heat insulation box.

2. The device for testing the heat insulation performance of food packaging film according to claim 1, characterized in that: A movable seat is provided behind the suspended plate. The movable seat is slidably installed at the bottom of the heat insulation box. A rotator is installed on the movable seat. A rotating plate is fitted onto the end of the rotating rod of the rotator. A heating lamp is installed on the rotating plate.

3. A testing device for the heat insulation performance of food packaging film according to claim 1 or 2, characterized in that: The through holes on the suspended plate are arranged in an array, and a limit seat is installed at the top of each of the suspended plates. The limit seat is fixedly connected to the heat insulation box through a connecting rod.

4. The device for testing the heat insulation performance of food packaging film according to claim 3, characterized in that: A lifting temperature measuring platform is installed below the suspended plate, and temperature measuring contacts are arranged in a row on the lifting temperature measuring platform.

5. The food packaging film heat insulation performance testing device according to claim 4, characterized in that: The top of the insulated box is equipped with a dustproof chamber, and a test plate is installed inside the dustproof chamber.

6. The device for testing the heat insulation performance of food packaging film according to claim 5, characterized in that: Both the insulated enclosure and the suspended panel are designed with heat-insulating materials.

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