PET (Polyethylene Terephthalate) film impact testing device

Abstract

The utility model relates to the technical field of PET (Polyethylene Terephthalate) film detection equipment, in particular to a PET film impact test device. The device comprises a detection block which is arranged on a test box and is limited by a pull rope; the detection assembly is arranged on the test box and is used for detecting the impact reaction of the PET film; the mounting mechanism is arranged on the test box and used for mounting a PET film, the detection block is arranged above the mounting mechanism, and the detection assembly is arranged below the mounting mechanism; and the temperature control assembly is arranged on the test box, blows air flow through an air blower and heats or refrigerates the air flow to change the temperature in the test box. According to the utility model, the height of the detection block is controlled to detect the PET film with different impact forces, so that the comprehensiveness of impact detection of the PET film is improved, and the accuracy of the impact detection result of the PET film is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of PET film detection equipment, in particular to a PET film impact test device. Background Art

[0002] After the production of some products is completed, in order to improve the safety of the products during transportation, a layer of packaging will be added to the outside of the products, including cartons, paper bags and some films. The most common film is PET film, which is a packaging film with relatively comprehensive performance, good transparency, gloss, good air tightness and fragrance retention, medium moisture resistance, decreased moisture permeability at low temperatures, and excellent mechanical properties. The toughness is the best among all thermoplastics, the tensile strength and impact strength are much higher than those of ordinary films, the strength is good, the size is stable, and it is suitable for secondary processing such as printing and paper bags. It also has excellent heat resistance, cold resistance, good chemical resistance and oil resistance.

[0003] During the production process of PET film, some of its properties need to be tested to ensure that the produced PET film is a qualified product, and one of the tests is the impact test. This test can detect the deformation of the PET film when it receives external impact and its buffering effect on the impact force, so as to achieve the protection effect of the product. In the prior art, there is an impact testing device for PET protective film (authorization announcement number: CN214584472U), whose structure includes a mounting base, and an impact test output module is fixed on the top of the mounting base, and the impact test output module is used to form the output of the test. The interior of the mounting base is fixedly connected with a detection and positioning base module, and the detection and positioning base module is used for stable positioning of the film body and anti-reaction force test protection. The impact test output module includes an L-shaped positioning frame, an auxiliary mounting plate, a motor, an eccentric drive plate and a linkage rod. The utility model adopts the design of the impact test output module, so that the device can conveniently carry out reciprocating and efficient continuous impact on the film body, thereby conveniently detecting the number of impacts on the film body and the corresponding impact reaction, and the design of the detection and positioning base module makes it convenient for the device to complete the positioning of the tested film and the detection of elastic support, and the elastic support avoids the test reaction force from causing secondary damage to the film body. Although the impact test device of the PET protective film adopts the design of the impact test output module, so that the device can conveniently carry out reciprocating and efficient continuous impact on the film body, thereby conveniently detecting the number of impacts on the film body and the corresponding impact reaction, and the design of the detection and positioning base module makes it convenient for the device to complete the positioning of the tested film and the detection of elastic support, and the elastic support avoids the test reaction force from causing secondary damage to the film body.

[0004] However, during the test, the impact force on the PET film is constant, so it is difficult to detect the impact response of the PET film when it is subjected to different impact forces, which reduces the diversity of the detection methods and thus reduces the accuracy of the detection results. Utility Model Content

[0005] In view of the problems existing in the background technology, a PET film impact testing device is proposed.

[0006] The utility model provides a PET film impact test device, comprising a detection block arranged on a test box and limited by a pull rope; a detection component arranged on the test box and used for detecting the impact reaction of the PET film; a mounting mechanism arranged on the test box and used for mounting the PET film, the detection block being arranged above the mounting mechanism, and the detection component being arranged below the mounting mechanism; and a temperature control component arranged on the test box and used for blowing airflow with a blower and heating or cooling the airflow to change the temperature in the test box.

[0007] Preferably, a fixed box is installed on the test box, a winding roller is rotatably installed on the fixed box, one end of the pull rope away from the detection block is wound on the winding roller, a rotating motor is installed on the fixed box, and the output shaft of the rotating motor is connected to one end of the winding roller.

[0008] Preferably, a support plate is installed on the test box, an adjusting screw is rotatably installed on the support plate, the adjusting screw extends to the top of the test box and is rotatably connected to the test box, an adjusting motor is installed on the test box, the output shaft of the adjusting motor is connected to the adjusting screw, a support frame is threadedly installed on the adjusting screw, two electric push rods are installed on the support frame, the two electric push rods are arranged facing each other, and clamping frames are installed on the telescopic axes of the two electric push rods.

[0009] Preferably, the detection assembly comprises a detection box arranged on the test box, a detection plate is slidably mounted on the detection box, a reset spring is mounted on the detection box, the reset spring is connected to the detection plate, and a detector is mounted on the detection box.

[0010] Preferably, the installation mechanism comprises an installation frame installed on the test box, a placement frame is slidably installed on the installation frame, a baffle is arranged on the installation frame, the baffle is connected to the installation frame through two connecting components, and four pressing components are arranged on the placement frame.

[0011] Preferably, the pressing assembly comprises a fixed block mounted on the placement frame, a pressing screw is threadedly mounted on the fixed block, a connecting block is mounted on the pressing screw, and a pressing block is rotatably mounted on the connecting block.

[0012] Preferably, the temperature control component consists of a blower, a heating box and a water tank, which are all installed on the test box. A heater is provided in the heating box, a semiconductor condenser is installed on the water tank, and an air pipe 1 is installed on the blower. The air pipe 1 consists of a three-way pipe, and the other two ends of the air pipe 1 are respectively connected to the heating box and the water tank. Air pipe 2 is installed on the heating box and the water tank, and the other ends of the two air pipes 2 are connected to the test box.

[0013] Compared with the prior art, the utility model has the following beneficial technical effects:

[0014] By setting the winding roller and the pull rope, the height of the detection block can be quickly adjusted, so that the detection of different impact forces on the PET film can be realized by controlling the height of the detection block, thereby improving the comprehensiveness of the impact detection of the PET film, and then ensuring the accuracy of the impact detection result of the PET film;

[0015] By setting up a heating box and a heater, the airflow entering the test box can be heated, and by setting up a water tank and a semiconductor condenser, the airflow entering the test box can be cooled. In summary, the PET film can be impact tested under high or low temperature conditions, thereby improving the comprehensiveness of the PET film detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the utility model;

[0017] Figure 2 This is a schematic diagram of the internal structure of the test box in the utility model;

[0018] Figure 3 It is a structural schematic diagram of the installation mechanism in the utility model;

[0019] Figure 4 It is a structural schematic diagram of the pressing component in the utility model;

[0020] Figure 5 This is a schematic diagram of the connection structure of the support frame and the clamping frame in the utility model;

[0021] Figure 6 It is a structural schematic diagram of the temperature control component in the utility model.

[0022] 1. Test box; 2. Mounting frame; 3. Placement frame; 4. Fixing block; 5. Pressing screw; 6. Connecting block; 7. Pressing block; 8. Baffle; 9. Slot; 10. Block; 11. Connecting assembly; 12. Detection box; 13. Detection plate; 14. Reset spring; 15. Detector; 16. Fixing box; 17. Winding roller; 18. Rotating motor; 19. Pull rope; 20. Detection block; 21. Limiting strip; 22. Support plate; 23. Adjusting motor; 24. Support frame; 25. Electric push rod; 26. Clamping frame; 27. Adjusting screw; 28. Heating box; 29. ​​Water tank; 30. Blower; 31. Gas pipe 1; 32. Semiconductor condenser; 33. Gas pipe 2; 34. Heater; 35. Water inlet pipe. DETAILED DESCRIPTION

[0023] Embodiment 1

[0024] like Figure 1 and Figure 2 As shown, a PET film impact test device proposed by the utility model includes a detection block 20 set on a test box 1 and limited by a pull rope 19, a limit strip 21 is installed on the detection block 20, the top of the limit strip 21 extends to the top of the test box 1 and is slidably connected to the test box 1, so that the movement of the detection block 20 can be limited to prevent the detection block 20 from causing large displacement and causing collision damage to the components in the test box 1, a fixed box 16 is installed on the test box 1, a winding roller 17 is rotatably installed on the fixed box 16, one end of the pull rope 19 away from the detection block 20 is wound around the winding roller 17, a rotating motor 18 is installed on the fixed box 16, and the output shaft of the rotating motor 18 is connected to one end of the winding roller 17; a detection component set on the test box 1 for detecting the impact reaction of the PET film; a mounting mechanism set on the test box 1 for mounting the PET film, the detection block 20 is set above the mounting mechanism, and the detection component is set below the mounting mechanism.

[0025] like Figure 5As shown, a support plate 22 is installed on the test box 1, and an adjusting screw 27 is rotatably installed on the support plate 22. The adjusting screw 27 extends to the top of the test box 1 and is rotatably connected to the test box 1. An adjusting motor 23 is installed on the test box 1, and the output shaft of the adjusting motor 23 is connected to the adjusting screw 27. A support frame 24 is threadedly installed on the adjusting screw 27. Two limit rods are installed on the support plate 22, and the two limit rods both penetrate the support frame 24, which can improve the movement stability of the support frame 24. Two electric push rods 25 are installed on the support frame 24. The two electric push rods 25 are arranged opposite to each other. Clamping frames 26 are installed on the telescopic axes of the two electric push rods 25. The clamping frame 26 is L-shaped. In the process of clamping the detection block 20, a supporting force is also formed on the bottom of the detection block 20, thereby improving the placement stability of the detection block 20. Through the arrangement of the two clamping frames 26, the pull rope 19 can be easily sent and released, thereby facilitating the free fall of the detection block 20.

[0026] like Figure 2 As shown, the detection assembly includes a detection box 12 arranged on the test box 1, a detection plate 13 is slidably installed on the detection box 12, a reset spring 14 is installed on the detection box 12, the reset spring 14 is connected to the detection plate 13, and a detector 15 is installed on the detection box 12. The detector 15 can be a laser detector.

[0027] like Figure 3 and Figure 4 The mounting mechanism shown includes a mounting frame 2 mounted on the test box 1, a placing frame 3 is slidably mounted on the mounting frame 2, a baffle 8 is arranged on the mounting frame 2, and the baffle 8 is connected to the mounting frame 2 through two connecting components 11. The connecting component 11 is composed of a U-shaped frame, a connecting block and a tension spring. The U-shaped frame is rotatably mounted on the mounting frame 2, and the connecting block is rotatably mounted on the baffle 8. One side of the connecting block extends into the U-shaped frame and is slidably connected to the U-shaped frame. The tension spring is mounted on one side outer wall of the connecting block, and the other end of the tension spring is connected to the U The inner wall of one side of the frame is fixedly connected, and two card slots 9 are provided on the outer wall of one side of the mounting frame 2. Two card blocks 10 are fixedly installed on the outer wall of one side of the baffle 8. The two card blocks 10 are respectively adapted to the two card slots 9, so that the connection stability between the baffle 8 and the mounting frame 2 can be improved. Four pressing components are arranged on the placement frame 3, and the pressing components include a fixed block 4 installed on the placement frame 3, a pressing screw 5 is threadedly installed on the fixed block 4, a connecting block 6 is installed on the pressing screw 5, and a pressing block 7 is rotatably installed on the connecting block 6.

[0028] In this embodiment, when in use, the PET film is placed on the placement frame 3, and then the pressing block 7 is pushed by rotating the pressing screw 5 to fix the PET film, and then the placement frame 3 is slidably installed on the installation frame 2 and fixed by the baffle 8, and then the pull rope 19 is loosened, and then the two clamping frames 26 are driven by the two electric push rods 25 to separate from the detection block 20. Under the action of gravity, the detection block 20 falls and acts on the PET film. At this time, the detection plate 13 located below the PET film is also pressed by the detection block 20, and then slides downward. At this time, the detection plate 13 passes through the detector 15 can detect the descending distance of the detection plate 13, thereby indirectly converting the deformation degree of the PET film and its buffering effect on the detection block 20. Similarly, a new PET film can be replaced, and then the detection block 20 can be pulled up to a certain height by the winding roller 17, which is different from the previous detection height, and then the detection is performed again. The falling pressure of the detection block 20 at different heights is different, and the different falling pressures can be converted into different impact forces received by the PET film, thereby more comprehensively detecting the impact resistance of the PET film and improving the comprehensiveness and accuracy of the detection results.

[0029] Embodiment 2

[0030] like Figure 1 and Figure 6 As shown, a PET film impact testing device proposed by the utility model, compared with the first embodiment, also includes a temperature control component arranged on the test box 1, the temperature control component is composed of a blower 30, a heating box 28 and a water tank 29, the blower 30, the heating box 28 and the water tank 29 are all installed on the test box 1, a heater 34 is arranged in the heating box 28, a semiconductor condenser 32 is installed on the water tank 29, an air supply pipe 1 31 is installed on the blower 30, the air supply pipe 1 31 is composed of a three-way pipe, the other two ends of the air supply pipe 1 31 are connected with the heating box 28 and the water tank 29 respectively, valves are respectively arranged at one end of the air supply pipe 1 31 close to the heating box 28 and the water tank 29, and the flow direction of the air flow is controlled by the valves, the heating box 28 and the water tank 29 are both installed with air supply pipe 2 33, the other ends of the two air supply pipes 2 33 are both connected with the test box 1, a water inlet pipe 35 is installed on the top of the water tank 29, a through opening is opened on one side of the water tank 29, and an observation glass is arranged in the through opening.

[0031] In the utility model, when the impact resistance test of the PET film is carried out, the airflow can be blown into the test box 1 by the blower 30. When the airflow passes through the heating box 28, it is heated by the heater 34, so that the temperature in the test box 1 is increased, so that the reaction of the PET film to the impact under high temperature can be detected. When the airflow passes through the water tank 29, the semiconductor condenser 32 will cool the water flow in the water tank 29, thereby indirectly cooling the airflow. The cooled airflow flows into the test box 1, which will reduce the temperature in the test box 1. In this way, the impact reaction of the PET film under low temperature can be detected, thereby improving the comprehensiveness and accuracy of the impact test of the PET film.

[0032] The implementation modes of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited thereto, and various changes can be made within the knowledge scope of technicians in the relevant technical field without departing from the purpose of the present invention.

Claims

1. A PET film impact testing device, characterized in that: include: A detection block (20) disposed on the test box (1) and limited by a pull rope (19); A detection component arranged on the test box (1) and used for detecting the impact reaction of the PET film; A mounting mechanism arranged on the test box (1) and used for mounting the PET film, wherein the detection block (20) is arranged above the mounting mechanism and the detection assembly is arranged below the mounting mechanism; And a temperature control component is arranged on the test box (1) and uses a blower (30) to blow airflow and heat or cool the airflow to change the temperature inside the test box (1).

2. A PET film impact testing device according to claim 1, characterized in that: A fixed box (16) is installed on the test box (1), a winding roller (17) is rotatably installed on the fixed box (16), one end of the pull rope (19) away from the detection block (20) is wound on the winding roller (17), a rotating motor (18) is installed on the fixed box (16), and the output shaft of the rotating motor (18) is connected to one end of the winding roller (17).

3. A PET film impact testing device according to claim 1, characterized in that: A support plate (22) is mounted on the test box (1), an adjusting screw (27) is rotatably mounted on the support plate (22), the adjusting screw (27) extends to the top of the test box (1) and is rotatably connected to the test box (1), an adjusting motor (23) is mounted on the test box (1), an output shaft of the adjusting motor (23) is connected to the adjusting screw (27), a support frame (24) is threadedly mounted on the adjusting screw (27), two electric push rods (25) are mounted on the support frame (24), the two electric push rods (25) are arranged facing each other, and clamping frames (26) are mounted on the telescopic shafts of the two electric push rods (25).

4. A PET film impact testing device according to claim 1, characterized in that: The detection assembly comprises a detection box (12) arranged on a test box (1), a detection plate (13) is slidably mounted on the detection box (12), a reset spring (14) is mounted on the detection box (12), the reset spring (14) is connected to the detection plate (13), and a detector (15) is mounted on the detection box (12).

5. A PET film impact testing device according to claim 1, characterized in that: The mounting mechanism comprises a mounting frame (2) mounted on a test box (1); a placement frame (3) is slidably mounted on the mounting frame (2); a baffle (8) is arranged on the mounting frame (2); the baffle (8) is connected to the mounting frame (2) via two connecting components (11); and four pressing components are arranged on the placement frame (3).

6. A PET film impact testing device according to claim 5, characterized in that: The pressing assembly comprises a fixed block (4) mounted on a placement frame (3), a pressing screw (5) being threadedly mounted on the fixed block (4), a connecting block (6) being mounted on the pressing screw (5), and a pressing block (7) being rotatably mounted on the connecting block (6).

7. A PET film impact testing device according to claim 1, characterized in that: The temperature control component is composed of a blower (30), a heating box (28) and a water tank (29). The blower (30), the heating box (28) and the water tank (29) are all installed on the test box (1). A heater (34) is arranged in the heating box (28). A semiconductor condenser (32) is installed on the water tank (29). A gas supply pipe (31) is installed on the blower (30). The gas supply pipe (31) is composed of a three-way pipe. The other two ends of the gas supply pipe (31) are respectively connected to the heating box (28) and the water tank (29). The heating box (28) and the water tank (29) are both installed with gas supply pipes (33). The other ends of the two gas supply pipes (33) are both connected to the test box (1).

Images