High temperature resistance testing device for polypropylene film

Abstract

The utility model relates to a high temperature resistance testing device for a polypropylene film, which comprises a tester body and a heating furnace, the heating furnace is arranged on the tester body, a top cover is placed at an inlet of the heating furnace, a sample disc for placing the polypropylene film is arranged in the heating furnace, and the high temperature resistance testing device further comprises a protruding piece fixed on the sample disc; the clamping jaw component comprises a lifting rod, a hinged support and two clamping strips, connecting rods are hinged between the hinged support and the two clamping strips, the lifting rod is movably connected with the top cover, a baffle disc attached to the upper surface of the top cover is fixed to the outer side of the lifting rod, the hinged support is fixed to the bottom end of the lifting rod, and the two clamping strips are hinged to the bottom of the top cover. And the two groups of clamping strips can be close to or far away from each other. According to the high-temperature-resistant testing device for the polypropylene film, when the sample disc is located in the heating furnace, the sample disc can be taken out together with the top cover by utilizing the clamping jaw component, so that the overall operation steps of a polypropylene film test are reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of thin film property testing, and specifically relates to a high-temperature resistance testing device for polypropylene films. Background Technique

[0002] The polypropylene film is obtained by co-extruding polypropylene particles into a sheet and then stretching it in both the longitudinal and transverse directions. Due to the molecular orientation during stretching, this film has good physical stability, mechanical strength, airtightness, high transparency and gloss, and is tough and wear-resistant.

[0003] The properties of the polypropylene film can be tested by thermogravimetric analysis, that is, a thermogravimetric analyzer is used to test the properties of the polypropylene film. During the testing process, the operation steps are as follows: first, remove the lid - place the sample pan (measure parameters such as the weight of the sample pan) - replace the lid - second, remove the lid - first, take out the sample pan - place the polypropylene film in the sample pan - put the sample pan in again - second, replace the lid - test - third, remove the lid - second, take out the sample pan. The overall operation steps are numerous. When the sample pan is in the heating furnace, in order to take out the sample pan when removing the lid to reduce the overall operation steps, for this reason, a high-temperature resistance testing device for polypropylene films is proposed. Content of the Utility Model

[0004] Based on the above description, the utility model provides a high-temperature resistance testing device for polypropylene films, which solves the technical problem of the numerous operation steps in testing the properties of polypropylene films by a thermogravimetric analyzer.

[0005] The technical solution of the utility model to solve the above technical problems is as follows: A high-temperature resistance testing device for polypropylene films includes a tester body and a heating furnace. The heating furnace is arranged on the tester body, and its inlet is provided with a top cover. A sample pan for placing the polypropylene film is arranged inside the heating furnace, and further includes:

[0006] A protruding member, which is fixed on the sample pan;

[0007] A jaw component, which includes a lifting rod, a hinge seat and two groups of clamping strips. Among them, a connecting rod is hinged between the hinge seat and each of the two groups of clamping strips. The lifting rod is movably connected to the top cover. A blocking disk that fits on the upper surface of the top cover is fixed on the outer side of the lifting rod. The hinge seat is fixed at the bottom end of the lifting rod. The two groups of clamping strips are hinged to the bottom of the top cover. When the lifting rod is pulled upward, the two groups of clamping strips can approach or move away from each other.

[0008] Based on the above technical solution, the utility model can be further improved as follows.

[0009] Furthermore, the number of the protruding members and the jaw components is two groups each.

[0010] Further, the protruding member has a notch, and the cross-section of the protruding member is U-shaped, allowing the jaw member to provide a support point for the protruding member through the notch, thereby lifting the protruding member and the sample tray.

[0011] Further, it further includes a connecting bar, which is arranged above the top cover and fixedly connected to the two lifting rods. When the connecting bar is lifted, the two clamping bars in the two jaw members can approach or move away from each other.

[0012] Further, a handle is fixed on the top cover, and the cross-section of the handle is U-shaped, allowing the operator to lift only the top cover through the handle.

[0013] Further, the connecting bar is located between the left and right side walls of the handle, and there is a spacing between the inner top wall of the handle and the upper surface of the connecting bar.

[0014] Further, a movable hole is opened on the top cover, and the lifting rod is movably connected to the top cover through the movable hole, and the diameter of the movable hole is smaller than the diameter of the retaining disc.

[0015] Further, the sample tray is in the shape of a stepped shaft, and a receiving cavity is opened at the center of the sample tray. The receiving cavity is an installation area for the polypropylene film.

[0016] Compared with the prior art, the technical solution of the present application has the following beneficial technical effects:

[0017] For this high-temperature test device for polypropylene film, when the sample tray is located in the heating furnace, the jaw member can take out the sample tray together when the top cover is taken out, so as to reduce the overall operation steps of the polypropylene film test. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic structural diagram of a high-temperature test device for polypropylene film provided by an embodiment of the present invention;

[0019] Figure 2 For Figure 1 exploded structural diagram;

[0020] Figure 3 It is a schematic structural diagram after hiding the tester body and the heating furnace in an embodiment of the present invention;

[0021] Figure 4 For Figure 3 half-sectional structural diagram;

[0022] Figure 5 For Figure 4 local enlarged schematic diagram of area A in

[0023] In the drawings, the list of components represented by each reference numeral is as follows:

[0024] 1. Tester body; 2. Heating furnace; 3. Top cover; 4. Sample tray; 5. Protruding part; 6. Claw component; 61. Lifting rod; 62. Hinge seat; 63. Clamping strip; 64. Connecting rod; 65. Stop disk; 7. Connecting strip; 8. Handle. Detailed implementation manner

[0025] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model.

[0026] As Figure 1 and Figure 2 shown, a high-temperature resistance test device for a polypropylene film in this embodiment is mainly used to test the polypropylene film. Of course, it can be understood that other films can also be tested. The high-temperature resistance test device for the polypropylene film includes a tester body 1, a heating furnace 2, a top cover 3, a sample tray 4, a protruding part 5, and a claw component 6. Among them, the heating furnace 2 is fixed on the tester body 1, the top cover 3 is placed at the inlet of the heating furnace 2, and the sample tray 4 is placed inside the heating furnace 2 and is used for placing the polypropylene film. After the tester body 1, the heating furnace 2, the top cover 3, and the sample tray 4 are combined, it is a thermogravimetric analyzer in the prior art, which uses thermogravimetric analysis to detect the polypropylene film. This method can determine the temperature range and decomposition degree of the film decomposition at high temperature by observing the mass change curve of the sample, so as to reflect the high-temperature resistance properties of the polypropylene film.

[0027] It should be noted that the sample tray 4 is in the shape of a stepped shaft, and a receiving cavity is opened at the center of the sample tray 4. The receiving cavity is the placement area for the polypropylene film.

[0028] Since there are many operation steps for testing the properties of the polypropylene film, in order to reduce the operation steps, the present application is designed with a protruding part 5 and a claw component 6. The protruding part 5 and the claw component 6 are the key points of the present application. When the sample tray 4 is in the heating furnace 2, the protruding part 5 and the claw component 6 are used to take out the sample tray 4 according to requirements when the top cover 3 is removed. As Figure 2-5 shown, the protruding part 5 is fixed on the sample tray 4, and the claw component 6 includes a lifting rod 61, a hinge seat 62, and two groups of clamping strips 63. Among them, a connecting rod 64 is hinged between the hinge seat 62 and the two groups of clamping strips 63, and the lifting rod 61 is movably connected to the top cover 3. In this way, the lifting rod 61 can move up and down. And a stop disk 65 that fits on the upper surface of the top cover 3 is fixed on the outside of the lifting rod 61. The hinge seat 62 is fixed at the bottom end of the lifting rod 61, and the two groups of clamping strips 63 are hinged to the bottom of the top cover 3.

[0029] It should be noted that in the preferred solution, the number of the protruding part 5 and the claw component 6 is two groups each. The two groups of protruding parts 5 and the two groups of claw components 6 are symmetrically distributed left and right. And for the description of the movable connection between the lifting rod 61 and the top cover 3, as Figure 4As shown, a movable hole is formed in the top cover 3, and the lifting rod 61 is movably connected to the top cover 3 through the movable hole, and the diameter of the movable hole is smaller than the diameter of the retaining disc 65.

[0030] When designed in this way, as Figure 3 shown, under normal conditions, the clamping strip 63 does not contact the protruding member 5, and does not affect the measurement of normal weight and other parameters of the sample tray 4. Moreover, when the lifting rod 61 is pulled upward, the hinge seat 62 moves upward synchronously. Thus, the two groups of connecting rods 64 will deflect the two groups of clamping strips 63, enabling the two groups of clamping strips 63 to approach or move away from each other. For example, when the two groups approach each other, they can limit the position of the protruding member 5, so that the sample tray 4 can be taken out when the top cover 3 is removed, and similarly, it can also be brought in. In this way, the operation steps can be reduced and the complexity of the operation steps can be avoided.

[0031] Furthermore, for the preferred design of the protruding member 5, the protruding member 5 has a notch, and the cross-section of the protruding member 5 is U-shaped, allowing the clamping jaw component 6 to provide a support point for the protruding member 5 through the notch, so as to lift the protruding member 5 and the sample tray 4.

[0032] Considering that the above design requires pulling up the two groups of lifting rods 61, such a pulling-up operation is inconvenient. Therefore, in one embodiment, as Figure 3 shown, the high-temperature resistance test device for polypropylene film further includes a connecting strip 7. The connecting strip 7 is arranged above the top cover 3 and is fixedly connected to the two groups of lifting rods 61, that is, the two groups of lifting rods 61 are fixed to the bottom of the connecting strip 7. When designed in this way, when the connecting strip 7 is lifted, the two groups of lifting rods 61 can be lifted, and further, the two groups of clamping strips 63 in the two groups of clamping jaw components 6 can approach or move away from each other. When the two groups of clamping strips 63 in any clamping jaw component 6 approach each other and meet at the notch of the corresponding protruding member 5, they can provide a support point for the protruding member 5. Subsequently, the sample tray 4 can be taken out when the top cover 3 is removed, and similarly, it can also be brought in. In this way, the operation steps can be reduced and the complexity of the operation steps can be avoided.

[0033] And considering that sometimes only the top cover 3 needs to be taken, and when holding it with the connecting strip 7, the connecting strip 7 will move up a certain distance. Therefore, as Figure 3 and 4 shown, a handle 8 is fixed on the top cover 3. The cross-section of the handle 8 is U-shaped, enabling the operator to lift only the top cover 3 through the handle 8.

[0034] Furthermore, the connecting strip 7 is located between the left and right side walls of the handle 8, and there is a gap between the inner top wall of the handle 8 and the upper surface of the connecting strip 7.

[0035] When designed in this way, the process of the high-temperature resistance test device for the polypropylene film to test the polypropylene film is to take out the top cover 3 - put the sample tray 4 - replace the top cover 3 - take out the top cover 3 and take out the sample tray 4 - put the polypropylene film into the sample tray 4 - put the top cover 3 again and synchronously bring the sample tray 4 in - test - take out the top cover 3 and take out the sample tray 4. In this way, according to the situation, up to three operation steps can be reduced.

[0036] Working principle:

[0037] Under normal conditions, the clamping strip 63 does not contact the protruding part 5, which does not affect the measurement of normal parameters such as the weight of the sample tray 4. Moreover, when the lifting rod 61 is pulled up, the hinge seat 62 moves up synchronously. In this way, the two groups of connecting rods 64 will deflect the two groups of clamping strips 63, enabling the two groups of clamping strips 63 to approach or move away from each other. For example, when the two groups approach each other, they can limit the protruding part 5, so that the sample tray 4 can be taken out when the top cover 3 is removed, and similarly, it can be brought in. In this way, the operation steps can be reduced and the complexity of the operation steps can be avoided.

[0038] The above is only the preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution of the present invention and its inventive concept, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

Claims

1. A high temperature resistance testing device for polypropylene film, comprising a testing instrument body (1) and a heating furnace (2), wherein the heating furnace (2) is arranged on the testing instrument body (1), a top cover (3) is placed at the inlet of the heating furnace (2), and a sample tray (4) for placing the polypropylene film is built in the heating furnace (2), characterized in that: Also includes: A protruding member (5) fixed on the sample plate (4); The clamping claw component (6) comprises a lifting rod (61), a hinge seat (62) and two groups of clamping strips (63), wherein a connecting rod (64) is hinged between the hinge seat (62) and the two groups of clamping strips (63), the lifting rod (61) is movably connected to the top cover (3), a baffle (65) is fixed on the outer side of the lifting rod (61) and is in contact with the upper surface of the top cover (3), the hinge seat (62) is fixed to the bottom end of the lifting rod (61), and the two groups of clamping strips (63) are hinged to the bottom of the top cover (3), so that when the lifting rod (61) is pulled up, the two groups of clamping strips (63) can move closer to or farther away from each other.

2. The high temperature resistance testing device for polypropylene film according to claim 1, characterized in that: The number of the protruding parts (5) and the clamping claw parts (6) is two sets.

3. The high temperature resistance testing device for polypropylene film according to claim 2, characterized in that: The protruding piece (5) has a notch, and the cross section of the protruding piece (5) is U-shaped, so that the clamping claw component (6) can provide a support point for the protruding piece (5) through the notch, thereby lifting the protruding piece (5) and the sample tray (4).

4. A high temperature resistance testing device for polypropylene film according to claim 2 or 3, characterized in that: It also includes a connecting strip (7) which is arranged above the top cover (3) and is fixedly connected to the two groups of lifting rods (61). When the connecting strip (7) is lifted, the two groups of clamping strips (63) in the two groups of clamping claw components (6) can move closer to or farther away from each other.

5. The high temperature resistance testing device for polypropylene film according to claim 4, characterized in that: A handle (8) is fixed on the top cover (3), and the cross-section of the handle (8) is U-shaped, so that an operator can lift the top cover (3) by the handle (8).

6. A high temperature resistance testing device for polypropylene film according to claim 5, characterized in that: The connection strip (7) is located between the left and right side walls of the handle (8), and there is a distance between the inner top wall of the handle (8) and the upper surface of the connection strip (7).

7. The high temperature resistance testing device for polypropylene film according to claim 1, characterized in that: The top cover (3) is provided with a movable hole, the lifting rod (61) is movably connected to the top cover (3) through the movable hole, and the diameter of the movable hole is smaller than the diameter of the baffle (65).

8. The high temperature resistance testing device for polypropylene film according to claim 1, characterized in that: The sample disc (4) is in the shape of a stepped shaft, and a receiving cavity is provided at the center of the sample disc (4), the receiving cavity being a placement area for the polypropylene film.

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