Tensile testing machine for detecting performance of high-barrier co-extruded film

Abstract

The utility model relates to a tensile testing machine for detecting the performance of a high-barrier co-extruded film, which belongs to the technical field of performance detection of the high-barrier co-extruded film and comprises a base, two support rods are mounted at the top of the base, and support blocks are mounted at the top ends of the two support rods; a rotating assembly is arranged on the two supporting blocks; the rotating assembly comprises a first electric telescopic rod installed on one supporting block and a motor installed on the other supporting block. The supporting structure is used for supporting the rolled high-barrier co-extrusion film, the rotating assembly is used for wrapping one end of the high-barrier co-extrusion film on the surfaces of vegetables and fruits, the stretching structure is arranged, a third electric telescopic rod is started, the telescopic end of the third electric telescopic rod retracts to drive an L-shaped block to move, the high-barrier co-extrusion film is stretched, and the high-barrier co-extrusion film is stretched. The effect of testing the stretching limit of the high-barrier co-extrusion film wrapping the vegetables and fruits with sharp surfaces or protruding skins by simulating actual conditions is achieved, so that the detection is more practical.

Description

Technical Field

[0001] The utility model relates to the technical field of high-barrier co-extruded film performance detection, in particular to a tensile testing machine for detecting the performance of high-barrier co-extruded films. Background Art

[0002] High barrier co-extruded film is a packaging material with excellent barrier properties. It has low oxygen and moisture permeability to achieve its barrier properties. This material has a wide range of applications in the packaging industry, including food, medicine, agriculture, electronics and industrial fields.

[0003] The performance testing of high barrier co-extruded films generally requires the use of a tensile testing machine to test its physical properties and reflect the deformation and destructive behavior of the high barrier co-extruded films when subjected to external forces.

[0004] During the tensile testing of high-barrier co-extruded films, the film's tensile strength is determined by fixing both ends of the film to the clamping structure of a tensile testing machine and then pulling the film. However, this test is not practical. For example, when packaging fruits and vegetables, high-barrier co-extruded films are typically wrapped around the outside of the fruits and vegetables, and the film is stretched during this process to improve its adhesion. Furthermore, the tensile strength limit experienced by the high-barrier co-extruded film during the wrapping process varies depending on the type of fruit and vegetable. For example, when wrapping durian or pineapple with high-barrier co-extruded film, the sharp or protruding surface of the fruit and vegetable will affect the tensile strength limit the film can withstand during the wrapping process.

[0005] To solve the above problems, the present application proposes a tensile testing machine for testing the performance of high barrier co-extruded films. Utility Model Content

[0006] The utility model aims at solving the technical problems existing in the prior art and provides a tensile testing machine for testing the performance of high-barrier co-extruded films.

[0007] The utility model solves the above technical problems with the following technical solutions: A tensile testing machine for testing the performance of high-barrier co-extruded films, comprising a base, two support rods mounted on the top of the base, and support blocks mounted on the tops of the two support rods;

[0008] The two support blocks are provided with a rotating assembly;

[0009] The rotating assembly includes a first electric telescopic rod mounted on one of the support blocks and a motor mounted on the other support block, the output end of the motor passes through the support block and is mounted with a shaft, and the telescopic end of the first electric telescopic rod is rotatably connected to a rotating rod;

[0010] One end of the shaft and the telescopic end of the first electric telescopic rod are both provided with a clamping structure for clamping fruits and vegetables;

[0011] A fixing plate is installed on one side of the base, and a mounting plate is installed on one side of the fixing plate;

[0012] The fixed plate is provided with a support structure for supporting the rolled high barrier co-extruded film;

[0013] The support structure includes an L-shaped block located above the fixed plate, a mounting block mounted on the L-shaped block, an L-shaped rod mounted on the mounting block, an L-shaped support plate mounted on the L-shaped rod, a second electric telescopic rod mounted on the support plate, and a positioning plate mounted on the telescopic end of the second electric telescopic rod;

[0014] The mounting plate is provided with a stretching structure for stretching the high barrier co-extruded film;

[0015] The stretching structure includes a third electric telescopic rod installed on a mounting plate and a tension sensor installed on one side of the L-shaped block. A computer is installed on the mounting plate, the computer is electrically connected to the tension sensor, and the sensing end of the tension sensor is connected to the telescopic end of the third electric telescopic rod.

[0016] The telescopic end of the first electric telescopic rod is installed with a fixed shell, the inner side of the fixed shell is installed with a first bearing, the outer side of the rotating rod is connected to the inner ring of the first bearing, and the fixed shell and the first bearing are provided to support and assist the rotation of the rotating rod.

[0017] The clamping structure includes two L-shaped plates, one of which is installed on one end of the rotating rod, and the other L-shaped plate is installed on one end of the shaft rod. The two L-shaped plates are rotatably connected to the threaded rod, and the two L-shaped plates are provided with a first sliding groove. The two L-shaped plates are slidably connected to the first slider through the corresponding first sliding groove. An extrusion plate is installed on one side of the two first sliders. The outer sides of the two threaded rods are respectively threadedly connected to the inner walls of the corresponding first sliders. By setting up the clamping structure, it is used to clamp and fix fruits and vegetables.

[0018] One end of the two threaded rods is provided with a turning handle, and the threaded rods can be easily rotated by arranging the turning handle.

[0019] Both of the L-shaped plates are provided with mounting holes connected to the corresponding first slide grooves. Both of the L-shaped plates are installed with second bearings through the corresponding mounting holes. The outer sides of the two threaded rods are respectively connected to the inner rings of the corresponding second bearings. The mounting holes and the second bearings are provided to support and assist the rotation of the threaded rods.

[0020] A first rubber sheet is installed on each of the two L-shaped plates, and a second rubber sheet is installed on each of the two extrusion plates. The first rubber sheet and the second rubber sheet are provided to increase the friction between the L-shaped plates and the extrusion plates on the fruits and vegetables.

[0021] The L-shaped block is provided with a slide, and the L-shaped block is slidably connected to a slide plate through the slide, and a moving rod is installed on the slide plate, and a socket is provided on the moving rod. One end of the L-shaped rod is movably inserted into the moving rod through the socket, and the slide, slide plate, moving rod and socket are provided to limit the rolled high-barrier co-extruded film.

[0022] A second sliding groove is provided on the top of the fixed plate, and the fixed plate is slidably connected to a second slider through the second sliding groove. The L-shaped block is installed on the second slider. The second sliding groove and the second slider are provided to support the L-shaped block.

[0023] The beneficial effects of the utility model are:

[0024] By providing a support structure for supporting the rolled high-barrier co-extruded film, and providing a rotating component for wrapping one end of the high-barrier co-extruded film on the surface of fruits and vegetables, and by providing a stretching structure, the third electric telescopic rod is activated, so that the telescopic end retracts, driving the movement of the L-shaped block to stretch the high-barrier co-extruded film, thereby achieving the effect of simulating actual conditions to test the tensile limit of high-barrier co-extruded film when wrapping fruits and vegetables with sharp surfaces or protruding skin, making the test more realistic; by providing a clamping structure, the first electric telescopic rod is activated, so that the telescopic end drives one of the L-shaped plates to move, and then the two ends of the fruits and vegetables are respectively placed on the two L-shaped plates, and then the threaded rod is rotated to drive the extrusion plate to move and squeeze the fruits and vegetables, thereby achieving the effect of clamping the fruits and vegetables. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This utility model is a schematic diagram showing the overall structure of the device;

[0026] Figure 2 This utility model is a schematic diagram showing the rotation structure;

[0027] Figure 3 This is a cross-sectional schematic diagram showing the clamping structure of the present invention;

[0028] Figure 4 For this utility model Figure 3 Enlarged view of point A in the middle.

[0029] In the accompanying drawings, the components represented by the reference numerals are as follows:

[0030] 1. Base;

[0031] 2. Support rod;

[0032] 3. Support block;

[0033] 4. Rotating assembly; 401. First electric telescopic rod; 402. Fixed housing; 403. First bearing; 404. Rotating rod; 405. Motor; 406. Shaft;

[0034] 5. Clamping structure; 501. L-shaped plate; 502. Mounting hole; 503. Second bearing; 504. Threaded rod; 505. Turning handle; 506. First slide groove; 507. First slider; 508. Extrusion plate; 509. First rubber sheet; 510. Second rubber sheet;

[0035] 6. Support structure; 601. L-shaped block; 602. Slide; 603. Mounting block; 604. L-shaped rod; 605. Slide plate; 606. Moving rod; 607. Socket; 608. Support plate; 609. Second electric telescopic rod; 610. Positioning plate;

[0036] 7. Fixed plate;

[0037] 8. Mounting plate;

[0038] 9. Tensile structure; 901. Second slide; 902. Second slider; 903. Third electric telescopic rod; 904. Tension sensor; 905. Computer. DETAILED DESCRIPTION

[0039] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without making creative efforts are within the scope of protection of this application.

[0040] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of the technical features indicated. Therefore, a feature specified as "first" or "second" may explicitly or implicitly include one or more of the described features. In the description of this application, "plurality" means two or more, unless otherwise specifically specified.

[0041] In the description of this application, the term "for example" is used to mean "used as an example, illustration or explanation". Any embodiment described as "for example" in this application is not necessarily to be construed as being more preferred or advantageous than other embodiments. In order to enable any person skilled in the art to implement and use the present invention, the following description is given. In the following description, details are listed for the purpose of explanation. It should be understood that a person of ordinary skill in the art can recognize that the present invention can be implemented without using these specific details. In other examples, well-known structures and processes will not be elaborated in detail to avoid obscuring the description of the present invention with unnecessary details. Therefore, the present invention is not intended to be limited to the embodiments shown, but is consistent with the widest scope consistent with the principles and features disclosed in this application.

[0042] Reference Figure 1-4 A tensile testing machine for testing the performance of high-barrier co-extruded films includes a base 1, two support rods 2 are mounted on the top of the base 1, and support blocks 3 are mounted on the top of each of the two support rods 2. A rotating assembly 4 is provided on the two support blocks 3. The rotating assembly 4 includes a first electric telescopic rod 401 mounted on one of the support blocks 3 and a motor 405 mounted on the other support block 3. The output end of the motor 405 passes through the support block 3 and is mounted with a shaft 406. The telescopic end of the first electric telescopic rod 401 is rotatably connected to a rotating rod 404.

[0043] One end of the shaft 406 and the telescopic end of the first electric telescopic rod 401 are both provided with a clamping structure 5 for clamping fruits and vegetables. The clamping structure 5 includes two L-shaped plates 501, one of which is mounted on one end of the rotating rod 404, and the other L-shaped plate 501 is mounted on one end of the shaft 406. The two L-shaped plates 501 are rotatably connected to the threaded rod 504. Both L-shaped plates 501 are provided with a first sliding groove 506. Both L-shaped plates 501 are slidably connected to the first slider 507 through the corresponding first sliding groove 506. A squeezing plate 508 is mounted on one side of each first slider 507. The outer sides of the two threaded rods 504 are respectively threadedly connected to the inner walls of the corresponding first slider 507.

[0044] According to the above technical solution, specifically: first, based on the length of the fruit or vegetable, the first electric telescopic rod 401 is activated, so that its telescopic end drives one of the L-shaped plates 501 to move. Then, the two ends of the fruit or vegetable are placed on the two L-shaped plates 501 respectively. Then, the threaded rod 504 is rotated to drive the movement of the first slider 507, thereby driving the movement of the squeezing plate 508, thereby achieving the effect of clamping the fruit or vegetable. After that, the motor 405 is activated to drive the shaft 406 to rotate. The rotation of the shaft 406 drives the rotation of the clamping structure 5, and ultimately drives the fruit or vegetable to rotate.

[0045] Reference Figure 3The telescopic end of the first electric telescopic rod 401 is installed with a fixed shell 402, and the inner side of the fixed shell 402 is installed with a first bearing 403. The outer side of the rotating rod 404 is connected to the inner ring of the first bearing 403. The first bearing 403 is used to support and assist the rotation of the rotating rod 404.

[0046] Reference Figure 4 One end of each of the two threaded rods 504 is provided with a turning handle 505 , which facilitates the rotation of the threaded rods 504 .

[0047] Both L-shaped plates 501 are provided with mounting holes 502 connected to the corresponding first slide grooves 506. Both L-shaped plates 501 are installed with second bearings 503 through the corresponding mounting holes 502. The outer sides of the two threaded rods 504 are respectively connected to the inner rings of the corresponding second bearings 503. The second bearings 503 are used to support and assist the rotation of the threaded rods 504.

[0048] Reference Figure 3 A first rubber sheet 509 is installed on each of the two L-shaped plates 501, and a second rubber sheet 510 is installed on each of the two extrusion plates 508. The first rubber sheet 509 and the second rubber sheet 510 are used to increase the friction between the L-shaped plates 501 and the extrusion plates 508 and the fruits and vegetables.

[0049] Reference Figure 1 A fixing plate 7 is installed on one side of the base 1, and a support structure 6 is provided on the fixing plate 7 for supporting the rolled high-barrier co-extruded film. The support structure 6 includes an L-shaped block 601 located above the fixing plate 7, a mounting block 603 is installed on the L-shaped block 601, an L-shaped rod 604 is installed on the mounting block 603, an L-shaped support plate 608 is installed on the L-shaped rod 604, and a second electric telescopic rod 609 is installed on the support plate 608. A positioning plate 610 is installed at the telescopic end of the second electric telescopic rod 609. By movably sleeved on the outside of the L-shaped rod 604, when conducting inspection, the rotating component 4 is used to wrap one end of the high-barrier co-extruded film around the outside of the fruits and vegetables, and then the second electric telescopic rod 609 is started, so that its telescopic end drives the positioning plate 610 to squeeze and fix the rolled high-barrier co-extruded film.

[0050] A slide 602 is provided on the L-shaped block 601, and the L-shaped block 601 is slidably connected to a slide plate 605 through the slide 602. A movable rod 606 is installed on the slide plate 605, and a socket 607 is provided through the movable rod 606. One end of the L-shaped rod 604 is movably inserted into the movable rod 606 through the socket 607. After the rolled high-barrier co-extruded film is movably sleeved on the outside of the L-shaped rod 604, the slide plate 605 is moved so that one end of the L-shaped rod 604 is inserted into the socket 607, which is used to limit the rolled high-barrier co-extruded film and minimize the detachment of the rolled high-barrier co-extruded film from the L-shaped rod 604.

[0051] Reference Figure 1 A mounting plate 8 is installed on one side of the fixed plate 7, and a stretching structure 9 is provided on the mounting plate 8 for stretching detection of the high-barrier co-extruded film. The stretching structure 9 includes a third electric telescopic rod 903 installed on the mounting plate 8 and a tension sensor 904 installed on one side of the L-shaped block 601. A computer 905 is installed on the mounting plate 8. The computer 905 is electrically connected to the tension sensor 904. The sensing end of the tension sensor 904 is connected to the telescopic end of the third electric telescopic rod 903. By starting the third electric telescopic rod 903, the telescopic end retracts, driving the movement of the L-shaped block 601, thereby stretching the high-barrier co-extruded film. The stretching value is obtained by the tension sensor 904, and the stretching value is received and displayed by the computer 905, thereby achieving the effect of detecting the stretching limit of the high-barrier co-extruded film.

[0052] Among them, the tension sensor 904 adopts the spoke-type force sensor of Shanghai Dijia Sensing Technology Co., Ltd., with the specific model being DJLF-105. The circuit connection method between the tension sensor 904 and the computer 905 can be reasonably set according to actual conditions, and the signal transmission method between the two is the existing technology.

[0053] A second slide groove 901 is provided on the top of the fixed plate 7, and the fixed plate 7 is slidably connected to the second slider 902 through the second slide groove 901. The L-shaped block 601 is installed on the second slider 902, and the second slider 902 can slide in the second slide groove 901 to support the L-shaped block 601.

[0054] Working principle:

[0055] This tensile testing machine for testing the performance of high-barrier co-extruded film first activates the first electric telescopic rod 401 according to the length of the fruit and vegetable, so that its telescopic end drives one of the L-shaped plates 501 to move, and then the two ends of the fruit and vegetable are respectively placed on the two L-shaped plates 501, and then the threaded rod 504 is rotated to drive the movement of the first slider 507, thereby driving the movement of the extrusion plate 508, thereby achieving the effect of clamping the fruit and vegetable. Then, the rolled high-barrier co-extruded film is movably placed on the outside of the L-shaped rod 604, and then one end of the high-barrier co-extruded film is attached to the surface of the fruit and vegetable. After that, the motor 405 is activated to drive the shaft 406 to rotate, and the rotation of the shaft 406 The movement drives the rotation of the clamping structure 5, thereby driving the fruits and vegetables to rotate and wrapping one end of the high-barrier co-extruded film on the surface of the fruits and vegetables. At this time, the second electric telescopic rod 609 is activated, and its telescopic end drives the positioning plate 610 to squeeze the high-barrier co-extruded film fixed in the roll. Then, the third electric telescopic rod 903 is activated, and its telescopic end retracts, driving the movement of the L-shaped block 601, thereby stretching the high-barrier co-extruded film. The stretching value is obtained by the tension sensor 904 and received and displayed by the computer 905. This achieves the effect of simulating the actual situation to test the stretching limit of fruits and vegetables with sharp surfaces or protruding skin wrapped with high-barrier co-extruded film, making the test more realistic.

[0056] Although the preferred embodiments of the present invention have been described, those skilled in the art may make additional changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the present invention.

[0057] Obviously, those skilled in the art may make various modifications and variations to the present invention without departing from the spirit and scope of the present invention. Thus, if such modifications and variations fall within the scope of the claims of the present invention and their equivalents, the present invention is intended to include such modifications and variations.

Claims

1. A tensile testing machine for testing the performance of high barrier co-extruded films, comprising a base (1), characterized in that: Two support rods (2) are installed on the top of the base (1), and support blocks (3) are installed on the top ends of the two support rods (2); A rotating assembly (4) is provided on the two supporting blocks (3); The rotating assembly (4) comprises a first electric telescopic rod (401) mounted on one of the supporting blocks (3) and a motor (405) mounted on the other supporting block (3); an output end of the motor (405) passes through the supporting block (3) and is mounted with a shaft (406); and the telescopic end of the first electric telescopic rod (401) is rotatably connected to a rotating rod (404); One end of the shaft (406) and the telescopic end of the first electric telescopic rod (401) are both provided with a clamping structure (5) for clamping fruits and vegetables; A fixing plate (7) is installed on one side of the base (1), and a mounting plate (8) is installed on one side of the fixing plate (7); A support structure (6) is provided on the fixed plate (7) for supporting the rolled high-barrier co-extruded film; The support structure (6) comprises an L-shaped block (601) located above the fixed plate (7), a mounting block (603) being mounted on the L-shaped block (601), an L-shaped rod (604) being mounted on the mounting block (603), an L-shaped support plate (608) being mounted on the L-shaped rod (604), a second electric telescopic rod (609) being mounted on the support plate (608), and a positioning plate (610) being mounted on the telescopic end of the second electric telescopic rod (609); The mounting plate (8) is provided with a stretching structure (9) for stretching and testing the high-barrier co-extruded film; The tensile structure (9) comprises a third electric telescopic rod (903) mounted on a mounting plate (8) and a tension sensor (904) mounted on one side of an L-shaped block (601); a computer (905) is mounted on the mounting plate (8); the computer (905) is electrically connected to the tension sensor (904); and the sensing end of the tension sensor (904) is connected to the telescopic end of the third electric telescopic rod (903).

2. A tensile testing machine for testing the performance of high barrier co-extruded films according to claim 1, characterized in that: A fixed housing (402) is installed at the telescopic end of the first electric telescopic rod (401), a first bearing (403) is installed on the inner side of the fixed housing (402), and the outer side of the rotating rod (404) is connected to the inner ring of the first bearing (403).

3. A tensile testing machine for testing the performance of high barrier co-extruded films according to claim 1, characterized in that: The clamping structure (5) includes two L-shaped plates (501), one of the L-shaped plates (501) is installed on one end of the rotating rod (404), and the other L-shaped plate (501) is installed on one end of the shaft rod (406). The two L-shaped plates (501) are rotatably connected to the threaded rod (504). The two L-shaped plates (501) are provided with a first sliding groove (506). The two L-shaped plates (501) are slidably connected to the first slider (507) through the corresponding first sliding groove (506). An extrusion plate (508) is installed on one side of the two first sliders (507). The outer sides of the two threaded rods (504) are respectively threadedly connected to the inner walls of the corresponding first sliders (507).

4. A tensile testing machine for testing the performance of high barrier co-extruded films according to claim 3, characterized in that: One end of each of the two threaded rods (504) is provided with a turning handle (505).

5. A tensile testing machine for testing the performance of high barrier co-extruded films according to claim 3, characterized in that: The two L-shaped plates (501) are each provided with a mounting hole (502) connected to the corresponding first slide groove (506), and the two L-shaped plates (501) are each provided with a second bearing (503) through the corresponding mounting hole (502), and the outer sides of the two threaded rods (504) are respectively connected to the inner ring of the corresponding second bearing (503).

6. A tensile testing machine for testing the performance of high barrier co-extruded films according to claim 3, characterized in that: A first rubber sheet (509) is mounted on each of the two L-shaped plates (501), and a second rubber sheet (510) is mounted on each of the two extrusion plates (508).

7. A tensile testing machine for testing the performance of high barrier co-extruded films according to claim 1, characterized in that: The L-shaped block (601) is provided with a slideway (602), and the L-shaped block (601) is slidably connected to a slide plate (605) via the slideway (602). A moving rod (606) is installed on the slide plate (605), and a socket (607) is provided through the moving rod (606). One end of the L-shaped rod (604) is movably inserted into the moving rod (606) through the socket (607).

8. The tensile testing machine for testing the performance of high barrier co-extruded films according to claim 1, characterized in that: A second sliding groove (901) is provided on the top of the fixed plate (7), and the fixed plate (7) is slidably connected to a second sliding block (902) through the second sliding groove (901), and the L-shaped block (601) is installed on the second sliding block (902).

Images