High-strength composite packaging film stretching detection device

Abstract

The utility model relates to the technical field of composite packaging film detection, in particular to a high-strength composite packaging film stretching detection device. The high-strength composite packaging film stretching detection device comprises a detection table, supporting blocks, sliding rails I, a two-way screw and a clamping block, the two supporting blocks are installed on the left side of the top of the detection table, the sliding rails I are fixedly connected to the front side and the rear side of the top of the detection table respectively, the two supporting blocks are connected to the two sliding rails I in a sliding mode respectively, and the two supporting blocks are connected to the two-way screw. The two supporting blocks on the front side are rotationally connected with a two-way screw rod, the outer portion of the two-way screw rod is in threaded connection with symmetrically-distributed clamping blocks, and every two vertically-aligned clamping blocks are matched to clamp one side of the composite packaging film. By arranging the placing plate, the supporting plate and the finishing rollers, when the composite packaging film passes through the two finishing rollers, the two finishing rollers synchronously rotate to smooth the surface of the composite packaging film, the wrinkling phenomenon of the composite packaging film is avoided, and the problem that the bearing capacity of an existing sample is increased is effectively solved.

Description

Technical Field

[0001] The utility model relates to the technical field of composite packaging film detection, in particular to a tensile detection device for high-strength composite packaging film. Background Art

[0002] A composite packaging film is a new type of packaging material composed of two or more materials combined together. This material can endow the contents in the package with characteristics such as moisture retention, fragrance preservation, beauty, freshness preservation, light shielding, anti-permeation, and extended shelf life. Therefore, it has developed rapidly and is widely used, including but not limited to food packaging. For example, food composite film is one of the most commonly used composite roll films, mainly used for packaging foods in daily life, such as milk powder, color-printed foods, biscuits, sausages, chocolates, etc., aiming to protect the characteristics of the food. After the composite packaging film is produced, tensile detection needs to be carried out, and the purpose is to evaluate its tensile strength and elongation rate. These two indicators are directly related to the integrity and tightness of the packaging product during transportation, storage, and use, as well as the flexibility and impact resistance of the packaging. Therefore, the tensile detection of the composite packaging film is particularly important.

[0003] At present, for the tensile detection of composite packaging films, an electronic tensile testing machine is generally used. The detection steps are as follows: First, clamp the specimen between two fixtures of the electronic tensile testing machine, and then operate the electronic tensile testing machine to make the two fixtures move in opposite directions, apply a tensile force to the specimen until the material breaks, record the force-elongation curve during the process, and obtain the tensile strength parameters of the material. The above is the entire tensile detection process of the composite packaging film. However, there are still deficiencies in actual use. For example, before clamping the specimen, a specimen is manually cut or sliced from the finished product of the composite packaging film in advance. Whether it is cutting or slicing the specimen, it is easy to cause the specimen to wrinkle, resulting in an increase in the bearing force of the specimen during tensile testing, and thus an error in the finally obtained tensile strength parameters.

[0004] Therefore, there is a particular need for a tensile detection device for high-strength composite packaging film to solve the problems existing in the prior art. Summary of the Utility Model

[0005] In order to overcome the drawback that currently a specimen is manually cut or sliced from the finished product of the composite packaging film in advance, and whether it is cutting or slicing the specimen, it is easy to cause the specimen to wrinkle, resulting in an increase in the bearing force of the specimen during tensile testing, and thus an error in the finally obtained tensile strength parameters, the utility model provides a tensile detection device for high-strength composite packaging film.

[0006] The present utility model is achieved through the following technical means: A tensile testing device for a high-strength composite packaging film, comprising a testing table, support blocks, slide rail I, a bidirectional screw, clamping blocks, guide rod I, a motor, a threaded rod, and an electronic tensile meter. On the left side of the top of the testing table, two support blocks are installed. On the front and rear sides of the top of the testing table, slide rail I is fixedly connected. On the two slide rails I, two other support blocks are respectively slidably connected. On the two support blocks on the front side, a bidirectional screw is rotatably connected. Symmetrically distributed clamping blocks are threadedly connected to the outside of the bidirectional screw. Every two vertically aligned clamping blocks cooperate to clamp one side of the composite packaging film. On the two support blocks on the rear side, guide rod I is fixedly connected. The clamping blocks are slidably connected to the corresponding guide rod I. A motor is installed on the top of the testing table. The output shaft of the motor is connected to a threaded rod through a coupling. An electronic tensile meter is installed between the two support blocks on the right side. The electronic tensile meter is threadedly connected to the threaded rod. By rotating or reversing the bidirectional screw, the adjacent two clamping blocks move synchronously inward or outward. Then, by running the motor, the threaded rod rotates, and thus the electronic tensile meter moves to the right. It further includes a placement plate, a support plate, and a finishing roller. On the left side of the top of the testing table, symmetrically distributed placement plates are fixedly connected in the front and back. The upper part of the placement plate is provided with a semi-circular groove for accommodating the composite packaging film roll. On the left side of the top of the testing table, symmetrically distributed support plates are fixedly connected. Between the two support plates, two finishing rollers are rotatably connected. There is a certain gap between the two finishing rollers for accommodating the penetration of the composite packaging film.

[0007] Further explanation, it also includes slide rail II, a sliding sleeve, a pressing block, and a blade. On the clamping block at the upper left side, slide rail II is fixedly connected. A sliding sleeve is slidably connected to the slide rail II. A pressing block is slidably connected inside the sliding sleeve. There is a certain frictional force between the pressing block and the sliding sleeve. The bottom of the pressing block is fixedly connected with a blade.

[0008] Further explanation, it also includes guide rod II and a spring. On both the front and rear sides of the sliding sleeve, guide rod II is fixedly connected. The pressing block slides between the two guide rods II. And a spring for assisting in resetting is sleeved on the outside of the guide rod II. The two ends of the spring are respectively connected to the sliding sleeve and the pressing block.

[0009] Further explanation, it also includes a knob. At the upper end of the bidirectional screw, a knob for assisting in rotation is fixedly connected.

[0010] Further explanation, it also includes an anti-slip pad. On the side where two adjacent clamping blocks are close to each other, an anti-slip pad is connected.

[0011] Further explanation, it also includes a slide bar. At the bottom of the lower clamping block, slide bars distributed in the front and back are fixedly connected. The slide bars are slidably connected to the corresponding support blocks.

[0012] Further explanation, at least two square protrusions are provided at the lower end of the slide bar. Inside the support block, a strip-shaped groove for the square protrusions to slide is provided.

[0013] Further description: It further includes a guide rod III. The rear side of the top of the detection table is fixedly connected with the guide rod III, and the electronic tensile meter is slidably connected with the guide rod III.

[0014] Further description: It further includes a controller. The right front side of the top of the detection table is provided with a controller, and the controller is electrically connected to the motor and the electronic tensile meter.

[0015] From the above description of the structure of the present invention, the design starting point, concept and advantages of the present invention are as follows: 1. By setting the placement plate, the support plate and the finishing roller, when the composite packaging film passes through the two finishing rollers, the two finishing rollers rotate synchronously to smooth the surface of the composite packaging film, avoiding the phenomenon of wrinkling of the composite packaging film, and effectively solving the problem of increased bearing capacity of the current specimen.

[0016] 2. By setting the slide rail II, the sliding sleeve, the pressing block and the blade, pull the sliding sleeve forward to the limit, press the pressing block to drive the blade to move downward to cut the composite packaging film, and then pull the sliding sleeve backward to the limit, so that the blade completely separates the clamped composite packaging film from the composite packaging film roll, thus eliminating the need to find a separate cutting tool. Description of the Drawings

[0017] Figure 1 It is a three-dimensional structural schematic diagram of the present invention.

[0018] Figure 2 It is a three-dimensional structural schematic diagram of the components such as the detection table, the placement plate and the finishing roller of the present invention.

[0019] Figure 3 It is a partial cross-sectional view of the components such as the support block, the knob and the bidirectional screw of the present invention.

[0020] Figure 4 It is a partial cross-sectional view of the components such as the pressing block, the sliding sleeve and the spring of the present invention.

[0021] Figure 5 It is a three-dimensional structural schematic diagram of the components such as the motor, the threaded rod and the guide rod III of the present invention.

[0022] In the above drawings: 1. Detection table, 2. Placement plate, 201. Support plate, 3. Finishing roller, 301. Support block, 4. Knob, 5. Bidirectional screw, 6. Clamping block, 7. Anti-slip pad, 8. Guide rod I, 9. Slide rod, 10. Pressing block, 1001. Sliding sleeve, 11. Spring, 12. Guide rod II, 13. Blade, 14. Motor, 15. Threaded rod, 16. Guide rod III, 17. Electronic tensile meter, 18. Slide rail I, 19. Controller, 20. Slide rail II. Detailed Description of the Invention

[0023] The present utility model will now be described more fully hereinafter with reference to the accompanying drawings, in which preferred embodiments of the present utility model are shown. However, the present utility model may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided for thoroughness and completeness and fully convey the scope of the present utility model to those skilled in the art.

[0024] Example: A tensile testing device for a high-strength composite packaging film, refer to Figures 1 - 3 and Figure 5As shown in the figure, it includes a detection table 1, support blocks 301, slide rail Ⅰ 18, bidirectional screw 5, knob 4, clamping blocks 6, anti-slip pads 7, guide rod Ⅰ 8, slide rod 9, motor 14, threaded rod 15, electronic tensile meter 17, guide rod Ⅲ 16 and controller 19. On the left side of the top of the detection table 1, two support blocks 301 are installed by bolts. On the front and rear sides of the top of the detection table 1, slide rail Ⅰ 18 is fixedly connected by welding. Another two support blocks 301 are respectively slidably connected on the two slide rail Ⅰ 18. A bidirectional screw 5 is rotatably connected on the two support blocks 301 at the front side. The upper end of the bidirectional screw 5 is fixedly connected by welding with a knob 4 for assisting rotation. Symmetrically distributed clamping blocks 6 are threadedly connected to the outside of the bidirectional screw 5. Every two vertically aligned clamping blocks 6 cooperate to clamp one side of the composite packaging film. On the side where two adjacent clamping blocks 6 approach each other, an anti-slip pad 7 is connected. The anti-slip pad 7 is made of rubber material, and rubber has viscosity to achieve a good anti-slip effect. Guide rod Ⅰ 8 is fixedly connected by welding on the two support blocks 301 at the rear side. The clamping blocks 6 are slidably connected to the corresponding guide rod Ⅰ 8. At the bottom of the lower clamping block 6, slide rods 9 distributed front and back are fixedly connected by welding. The slide rods 9 are slidably connected to the corresponding support blocks 301. At least two square protrusions are provided at the lower end of the slide rod 9. Inside the support block 301, a strip-shaped groove for the square protrusions to slide is provided, and the length of the strip-shaped groove does not exceed the upper end of the slide rod 9, so that the square protrusions are limited inside the slide rod 9. The motor 14 is installed on the top of the detection table 1 by bolts. The output shaft of the motor 14 is connected with the threaded rod 15 through a coupling. An electronic tensile meter 17 is installed between the two support blocks 301 on the right side by bolts. The electronic tensile meter 17 is threadedly connected to the threaded rod 15. Guide rod Ⅲ 16 is fixedly connected by welding at the rear side of the top of the detection table 1. The electronic tensile meter 17 is slidably connected to the guide rod Ⅲ 16. The controller 19 is installed on the top right front side of the detection table 1 by bolts. The controller 19 is electrically connected to the motor 14 and the electronic tensile meter 17. By rotating or reversing the bidirectional screw 5, the two adjacent clamping blocks 6 move synchronously inwards or outwards. Then, by running the motor 14, the threaded rod 15 rotates, and then the electronic tensile meter 17 moves to the right. It also includes a placement plate 2, a support plate 201 and a sorting roller 3. Symmetrically distributed placement plates 2 are fixedly connected by welding on the left side of the top of the detection table 1. A semi-circular groove for accommodating the composite packaging film roll is provided on the upper part of the placement plate 2. Symmetrically distributed support plates 201 are fixedly connected by welding on the left side of the top of the detection table 1. Two sorting rollers 3 are rotatably connected between the two support plates 201. There is a certain gap between the two sorting rollers 3 for accommodating the composite packaging film to pass through.

[0025] Refer to Figures 1 - 4As shown, it further includes a slide rail II 20, a sliding sleeve 1001, a pressing block 10, a guide rod II 12, a spring 11 and a blade 13. The slide rail II 20 is fixedly connected to the clamping block 6 on the upper left side by welding. The sliding sleeve 1001 is slidably connected to the slide rail II 20. The pressing block 10 is slidably connected inside the sliding sleeve 1001. There is a certain frictional force between the pressing block 10 and the sliding sleeve 1001. Guide rods II 12 are fixedly connected to both the front and rear sides of the sliding sleeve 1001 by welding. The pressing block 10 slides between the outer sides of the two guide rods II 12. And a spring 11 for assisting in resetting is sleeved on the outer side of the guide rod II 12. The two ends of the spring 11 are respectively connected to the sliding sleeve 1001 and the pressing block 10. The bottom of the pressing block 10 is fixedly connected to the blade 13 by welding. The bottom surface of the blade 13 and the bottom surface of the clamping block 6 on the upper left side are at different horizontal levels. When the clamping block 6 on the upper left side clamps the composite packaging film, there is a certain distance between the blade 13 and the composite packaging film.

[0026] First, the staff places the composite packaging film roll between the two placing plates 2. Then, one end of the composite packaging film is pulled out from the composite packaging film roll and sequentially passes through between the two finishing rollers 3 and the four clamping blocks 6. When the composite packaging film passes through the two finishing rollers 3, the two finishing rollers 3 rotate synchronously to smooth the surface of the composite packaging film to avoid wrinkling of the composite packaging film. After passing through, the staff pinches the knob 4 with their hands and rotates the bidirectional screw rod 5 in turn, so that the four clamping blocks 6 move inward successively to clamp the left and right sides of the composite packaging film respectively. The two clamping blocks 6 on the lower side drive the slide rod 9 to move inward at the same time. And the slide rod 9 slides in the support block 301 to improve the smoothness of the movement of the clamping block 6. After clamping, the sliding sleeve 1001 is pulled forward to the limit, and the pressing block 10 is pressed to drive the blade 13 to move downward to cut the composite packaging film. The spring 11 is compressed accordingly. Then, the sliding sleeve 1001 is pulled backward to the limit, so that the blade 13 completely cuts off the clamped composite packaging film from the composite packaging film roll. After the cutting is completed, the pressing block 10 is released, and the spring 11 returns to its original state accordingly, so that the pressing block 10 drives the blade 13 to move upward to complete the reset. Then, the controller 19 is used to turn on the motor 14 and the electronic tensiometer 17. The output shaft of the motor 14 rotates to drive the threaded rod 15 to rotate, so that the electronic tensiometer 17 pulls the two support blocks 301 on the right side to move to the right. And the two support blocks 301 pull the two clamping blocks 6 on the right side to move to the right to apply a tensile force to the specimen. The electronic tensiometer 17 operates continuously to record the tensile force received by the specimen to obtain the tensile strength parameter of the specimen.

[0027] Although the present invention has been described with reference to exemplary embodiments, it should be understood that the present invention is not limited to the disclosed exemplary embodiments. The scope of the following claims should be given the broadest interpretation so as to cover all modifications and equivalent structures and functions.

Claims

1. A high-strength composite packaging film tensile testing device, comprising a testing platform (1), a support block (301), a slide rail I (18), a bidirectional screw (5), a clamping block (6), a guide rod I (8), a motor (14), a threaded rod (15) and an electronic tensile gauge (17), wherein two support blocks (301) are installed on the left side of the top of the testing platform (1), and the front and rear sides of the top of the testing platform (1) are fixedly connected with the slide rail I (18), and the two slide rails I (18) are respectively slidably connected to the other two support blocks (301), and the two support blocks (301) on the front side are fixedly connected to the slide rail I (18). A bidirectional screw rod (5) is rotatably connected, and the bidirectional screw rod (5) is externally threadedly connected to symmetrically distributed clamping blocks (6). A guide rod I (8) is fixedly connected to the two support blocks (301) on the rear side, and the clamping block (6) is slidably connected to the corresponding guide rod I (8). A motor (14) is installed on the top of the detection platform (1), and a threaded rod (15) is connected to the output shaft of the motor (14) through a coupling. An electronic tensile gauge (17) is installed between the two support blocks (301) on the right side, and the electronic tensile gauge (17) is threadedly connected to the threaded rod (15). The detection platform (1) is characterized in that: It also comprises a placement plate (2), a support plate (201) and a finishing roller (3); the left side of the top of the detection platform (1) is fixedly connected to a placement plate (2) that is symmetrical in front and back; the left side of the top of the detection platform (1) is fixedly connected to a support plate (201) that is symmetrically distributed; and two finishing rollers (3) are rotatably connected between the two support plates (201).

2. A high-strength composite packaging film stretching detection device according to claim 1, characterized in that: The invention also comprises a slide rail II (20), a slide sleeve (1001), a lower pressing block (10) and a blade (13); the slide rail II (20) is fixedly connected to the clamping block (6) on the upper left side; the slide sleeve (1001) is slidably connected to the slide rail II (20); the lower pressing block (10) is slidably connected inside the slide sleeve (1001); and the blade (13) is fixedly connected to the bottom of the lower pressing block (10).

3. A high-strength composite packaging film stretching detection device according to claim 2, characterized in that: It also includes a guide rod II (12) and a spring (11). The guide rods II (12) are fixedly connected to the front and rear sides of the sliding sleeve (1001). The lower pressing block (10) slides between the outsides of the two guide rods II (12), and the outside of the guide rod II (12) is provided with a spring (11) for auxiliary resetting.

4. A high-strength composite packaging film stretching detection device according to claim 3, characterized in that: It also includes a knob (4), and the upper end of the bidirectional screw rod (5) is fixedly connected to the knob (4) for assisting rotation.

5. A high-strength composite packaging film stretching detection device according to claim 4, characterized in that: It also includes an anti-skid pad (7), and the anti-skid pad (7) is connected to the side where two adjacent clamping blocks (6) are close to each other.

6. A high-strength composite packaging film stretching detection device according to claim 5, characterized in that: It also includes a slide rod (9), the bottom of the clamping block (6) on the lower side is fixedly connected with the slide rod (9) distributed front and back, and the slide rod (9) is slidably connected with the corresponding support block (301).

7. A high-strength composite packaging film stretching detection device according to claim 6, characterized in that: At least two square protrusions are provided at the lower end of the slide rod (9), and a strip groove for the square protrusions to slide is provided inside the support block (301).

8. A high-strength composite packaging film stretching detection device according to claim 7, characterized in that: Also includes A guide rod III (16) is provided, the top rear side of the testing platform (1) is fixedly connected with the guide rod III (16), and an electronic tensile gauge (17) is slidably connected with the guide rod III (16).

9. A high-strength composite packaging film stretching detection device according to claim 8, characterized in that: The device also includes a controller (19), which is installed on the right front side of the top of the testing platform (1), and is electrically connected to the motor (14) and the electronic dynamometer (17).

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