Layering performance testing device for multi-layer co-extrusion film

Abstract

The utility model provides a layering performance testing device for a multi-layer co-extrusion film, and relates to the technical field of film testing. The device comprises a working platform, two tensioning sliding grooves are formed in the top face of the working platform, an electric sliding rail is fixedly installed on the inner wall of each tensioning sliding groove, a sliding block is connected to the outer surface of each electric sliding rail in a sliding mode, the sliding blocks are connected with the tensioning sliding grooves in a sliding mode, and the sliding blocks are connected with the tensioning sliding grooves in a sliding mode. And a pressing mechanism is arranged above the working platform. Through the arrangement of the electric sliding rail, the pressing frame, the lower pressing plate and the upper pressing plate, after a worker places a film on the lower pressing plate, the lifting screw is rotated, the lifting screw can drive the upper pressing plate to slide downwards, and therefore the film placed on the lower pressing plate is clamped; and the electric slide rail can drive the pressing frame to move to a specific position so as to tension the film, so that the film is prevented from being stacked in the test process to influence the test result, and the test efficiency and precision are improved.

Description

Technical Field

[0001] The utility model relates to a film performance testing device, in particular to a multi-layer co-extruded film delamination performance testing device, belonging to the technical field of film testing. Background Technique

[0002] The multi-layer co-extruded barrier film is generally produced by a multi-layer co-extruded blow molding process or a casting process, which is a film forming process technology with excellent barrier properties, mechanical properties, stretching and forming properties, and heat sealing properties. Moreover, no additional lamination is required during the processing, and there are no problems such as residues of printing inks, adhesives, and additives. Therefore, it is a relatively green and environmentally friendly food packaging technology process with cost advantages. During the production of multi-layer co-extruded films, it is necessary to test their delamination performance.

[0003] According to the patent with the patent number CN207516227U, a device for testing the delamination performance of multi-layer co-extruded films is disclosed, including a lower heating pressing plate, on the upper surface of which a lower carbon fiber plate is arranged; an upper heating pressing plate corresponding to the lower heating pressing plate, on the lower surface of which an upper carbon fiber plate is arranged. One end of the upper heating pressing plate is hinged to one end of the lower heating pressing plate, and a locking device is arranged between the other end of the upper heating pressing plate and the other end of the lower heating pressing plate.

[0004] The above solution can test the delamination performance of the film during implementation, and has the advantages of low cost and simple operation. However, during the implementation of the above solution, it is difficult to tension the multi-layer co-extruded film during the test. The steps for the staff to place the film on the testing device are relatively cumbersome, and if the placed film shows a stacking phenomenon, it will greatly affect the test accuracy. Therefore, we provide a multi-layer co-extruded film delamination performance testing device to solve the above problems. Content of the Utility Model

[0005] (1) Technical Problems to be Solved

[0006] The purpose of the utility model is to provide a multi-layer co-extruded film delamination performance testing device to solve the problem that it is difficult to avoid the stacking of multi-layer co-extruded films during the test in the prior art.

[0007] (2) Technical Solutions

[0008] The present utility model is realized through the following technical solutions: A multi-layer co-extruded film delamination performance testing device, including an operation platform. Two tension chutes are opened on the top surface of the operation platform. An electric slide rail is fixedly installed on the inner wall of each tension chute. A sliding block is slidably connected to the outer surface of each electric slide rail. The sliding block is slidably connected to the tension chute. A pressing mechanism is arranged above the operation platform. The pressing mechanism includes a pressing frame. A lower pressing plate is fixedly connected to the inner wall of the pressing frame. An upper pressing plate is slidably connected inside the pressing frame. A lifting screw rod is rotatably connected to the top surface of the upper pressing plate.

[0009] Preferably, the lifting screw rod penetrates through the pressing frame and is threadedly connected to the pressing frame. Two pressing chutes are opened on the inner wall of the pressing frame. Rotating the lifting screw rod can control the lifting of the upper pressing plate inside the pressing frame.

[0010] Preferably, both ends of the upper pressing plate are respectively slidably connected to the two pressing chutes. Both ends of the pressing frame are respectively fixedly connected to the two sliding blocks. The pressing chutes provide support and stability for the sliding of the upper pressing plate.

[0011] Preferably, a lower heating plate is fixedly connected to the top surface of the operation platform. A fixing frame is fixedly connected to the outer surface of the operation platform. The lower heating plate can carry the film.

[0012] Preferably, an electric push rod is fixedly connected to the outer surface of the fixing frame. The bottom end of the electric push rod is fixedly connected to an upper heating plate. Carbon fiber plates are fixedly connected to the top surface of the lower heating plate and the bottom surface of the upper heating plate. The electric push rod can push the upper heating plate to squeeze the film placed on the lower heating plate.

[0013] Preferably, two support blocks are fixedly connected to the top surface of the operation platform. A card slot is opened at the top end of each support block. A rotating roller and a pressure roller are arranged between the two support blocks. The rotating roller provides support for the tension of the film.

[0014] Preferably, both ends of the rotating roller are respectively rotatably connected to the two support blocks. Both ends of the pressure roller are respectively slidably connected to the two card slots. The pressure roller can prevent the film from sagging during the tensioning process.

[0015] The present utility model provides a multi-layer co-extruded film delamination performance testing device, and the beneficial effects thereof are as follows:

[0016] 1. Through the settings of the electric slide rail, pressing frame, lower pressing plate and upper pressing plate, after the staff place the film on the lower pressing plate, they rotate the lifting screw rod. The rotation of the lifting screw rod can drive the upper pressing plate to slide downward, thereby clamping the film placed on the lower pressing plate. The electric slide rail can drive the pressing frame to move to a specific position to tension the film, avoiding the stacking of the film during the test and affecting the test results, reducing the working intensity of the staff for the delamination performance test of the film, and improving the test efficiency and accuracy.

[0017] 2. Through the settings of the electric push rod, upper heating plate, carbon fiber plate and lower heating plate, when the film is tensioned and placed on the lower heating plate, start the electric push rod. The electric push rod pushes the upper heating plate to descend. Stop the electric push rod when the lower heating plate and the upper heating plate press the film. Then start the lower heating plate and the upper heating plate. The lower heating plate and the upper heating plate heat the epoxy resin to cure it and bond the carbon fiber plate and the film together. Finally, start the electric push rod again. If the film does not delaminate when the electric push rod pulls the upper heating plate upward to a certain position, it is determined that the multilayer coextruded film is qualified, simplifying the operation steps of the staff for the delamination performance test of the multilayer coextruded film and reducing the operation difficulty. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is the overall structural schematic diagram of the present utility model;

[0019] Figure 2 is the partial structural sectional view of the working platform of the present utility model;

[0020] Figure 3 is the structural schematic diagram of the pressing mechanism of the present utility model;

[0021] Figure 4 is the structural schematic diagram of the support block of the present utility model.

[0022]

SYMBOLS OF MAIN COMPONENTS

[0023] 1. Working platform; 2. Tensioning chute; 3. Electric slide rail; 4. Sliding block;

[0024] 5. Pressing mechanism; 501. Pressing frame; 502. Lower pressing plate; 503. Upper pressing plate; 504. Lifting screw rod; 505. Pressing chute;

[0025] 6. Lower heating plate; 7. Fixed frame; 8. Electric push rod; 9. Upper heating plate; 10. Carbon fiber plate; 11. Support block; 12. Rotating roller; 13. Pressure roller. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0026] The embodiment of the present utility model provides a device for testing the delamination performance of a multilayer coextruded film.

[0027] Please refer to Figure 1 and Figure 2 , including the working platform 1. A set of bolt columns are fixedly installed on the outer surface of the working platform 1. Workers can use screws to fix the working platform 1 at a suitable working position through the bolt columns, so that the device remains stable during the test.

[0028] Please refer to Figure 1 , Figure 2 and Figure 3 . Two tension chutes 2 are opened on the top surface of the working platform 1. An electric slide rail 3 is fixedly installed on the inner wall of each tension chute 2. A sliding block 4 is slidably connected to the outer surface of each electric slide rail 3. The sliding block 4 is slidably connected to the tension chute 2. The electric slide rail 3 is a prior art and will not be described in detail in this application. When the electric slide rail 3 is started, the electric slide rail 3 can drive the sliding block 4 to slide inside the tension chute 2. Through the settings of the tension chute 2 and the electric slide rail 3, support and stability can be provided for the sliding of the sliding block 4.

[0029] A pressing mechanism 5 is arranged above the working platform 1. The pressing mechanism 5 includes a pressing frame 501. The two ends of the pressing frame 501 are respectively fixedly connected to the two sliding blocks 4. When the sliding block 4 slides inside the tension chute 2, it can drive the pressing frame 501 to move above the working platform 1, so as to tension the clamped film and avoid the influence of film stacking on the test effect of the device.

[0030] Please refer to Figure 1 . A fixing frame 7 is fixedly connected to the outer surface of the working platform 1. An electric push rod 8 is fixedly connected to the outer surface of the fixing frame 7. The electric push rod 8 is a prior art and will not be described in detail in this application. The electric push rod 8 can drive the upper heating plate 9 to lift, so that the upper heating plate 9 can press the tensioned film, facilitating the subsequent delamination function test operation.

[0031] A lower heating plate 6 is fixedly connected to the top surface of the working platform 1. The bottom end of the electric push rod 8 is fixedly connected to an upper heating plate 9. Carbon fiber plates 10 are fixedly connected to the top surface of the lower heating plate 6 and the bottom surface of the upper heating plate 9. The lower heating plate 6, the upper heating plate 9 and the carbon fiber plates 10 are all prior arts and will not be described in detail in this application. Through the settings of the lower heating plate 6 and the upper heating plate 9, the carbon fiber plates 10 can be heated, so that the epoxy resin coated on their surfaces is cured by heat, thereby bonding the carbon fiber plates 10 to the film together, facilitating the test of the delamination performance of the film.

[0032] Please refer to Figure 1 , Figure 2 and Figure 4, two support blocks 11 are fixedly connected to the top surface of the working platform 1. A rotating roller 12 and a pressure roller 13 are arranged between the two support blocks 11. The two ends of the rotating roller 12 are respectively rotatably connected to the two support blocks 11. When the pressing frame 501 drives the film to be tensioned, under the action of the frictional force generated between the film and the rotating roller 12, the rotating roller 12 will rotate accordingly, so as to support the film.

[0033] A card slot is provided at the top end of each support block 11. The two ends of the pressure roller 13 are respectively slidably connected to the two card slots. When the pressing frame 501 moves to a specific position, the pressure roller 13 will extrude the film on the rotating roller 12 under the action of gravity, so as to keep the film in a tensioned state and avoid the film from sagging due to its own gravity and generating stacking.

[0034] Please refer to again Figure 1 , Figure 2 and Figure 3 , a lower pressing plate 502 is fixedly connected to the inner wall of the pressing frame 501. An upper pressing plate 503 is slidably connected to the inside of the pressing frame 501. A layer of buffer soft pads are covered on the top surface of the lower pressing plate 502 and the bottom surface of the upper pressing plate 503 to avoid damaging the film during the clamping process of the lower pressing plate 502 and the upper pressing plate 503. The bottom height of the lower pressing plate 502 should be slightly higher than the carbon fiber plate 10 fixed on the lower heating plate 6 to avoid the lower pressing plate 502 touching the carbon fiber plate 10 during the moving process and causing damage to both.

[0035] A lifting screw 504 is rotatably connected to the top surface of the upper pressing plate 503. The lifting screw 504 penetrates through the pressing frame 501 and is threadedly connected to the pressing frame 501. A knob for easy rotation is installed at the top end of the lifting screw 504. The staff can rotate the lifting screw 504 through the knob. The rotation of the lifting screw 504 can drive the upper pressing plate 503 to slide inside the pressing frame 501, so as to clamp the multi-layer co-extruded film between the upper pressing plate 503 and the lower pressing plate 502.

[0036] Two pressing sliding grooves 505 are provided on the inner wall of the pressing frame 501. The two ends of the upper pressing plate 503 are respectively slidably connected to the two pressing sliding grooves 505. The two end ports of the upper pressing plate 503 are designed in an I-shaped shape, which is adapted to the pressing frame 501 and the pressing sliding grooves 505. Through the setting of the pressing sliding grooves 505, the upper pressing plate 503 can be kept stable during the sliding and clamping processes, avoiding the instability of the upper pressing plate 503 from affecting the clamping of the film and keeping the film in a tensioned state during the test.

[0037] When the utility model is in use: First, the staff apply a layer of low-temperature uncured epoxy resin on the surfaces of the two carbon fiber plates 10. Then, one end of the film is passed through the rotating roller 12 and placed on the lower pressing plate 502. Next, the knob at the top of the lifting screw rod 504 is rotated. The rotation of the lifting screw rod 504 can drive the upper pressing plate 503 to slide downward, so as to clamp the film placed on the lower pressing plate 502. Then, the pressure roller 13 is placed in the card slot at the top of the support block 11. The electric slide rail 3 is started. The electric slide rail 3 can control the sliding of the sliding block 4. The sliding of the sliding block 4 can drive the pressing frame 501 to slide. The movement of the pressing frame 501 can tension the film. After the pressing frame 501 moves to a specific position suitable for testing, the electric slide rail 3 is stopped. The electric push rod 8 is started. The electric push rod 8 pushes the upper heating plate 9 downward. When the lower heating plate 6 and the upper heating plate 9 press the film, the electric push rod 8 is stopped. Then, the lower heating plate 6 and the upper heating plate 9 are started. The lower heating plate 6 and the upper heating plate 9 heat the epoxy resin to cure it and bond the carbon fiber plate 10 and the film together. Finally, the electric push rod 8 is started again. If the film does not delaminate when the electric push rod 8 pulls the upper heating plate 9 upward to a certain position, it is determined that the multilayer coextruded film is qualified.

[0038] The above shows and describes the basic principles, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model will have various changes and improvements, and these changes and improvements all fall within the scope of the utility model claimed. The scope of protection claimed by the utility model is defined by the appended claims and their equivalents.

Claims

1. A device for testing the delamination performance of a multi-layer co-extruded film, comprising a working platform (1), characterized in that: The top surface of the working platform (1) is provided with two tensioning grooves (2), the inner wall of each tensioning groove (2) is fixedly installed with an electric slide rail (3), the outer surface of each electric slide rail (3) is slidably connected with a sliding block (4), the sliding block (4) is slidably connected to the tensioning groove (2), a pressing mechanism (5) is arranged above the working platform (1), the pressing mechanism (5) comprises a pressing frame (501), the inner wall of the pressing frame (501) is fixedly connected with a lower pressing plate (502), the interior of the pressing frame (501) is slidably connected with an upper pressing plate (503), and the top surface of the upper pressing plate (503) is rotatably connected with a lifting screw (504).

2. A multi-layer co-extruded film delamination performance testing device according to claim 1, characterized in that: The lifting screw rod (504) passes through the pressing frame (501) and is threadedly connected to the pressing frame (501). The inner wall of the pressing frame (501) is provided with two pressing grooves (505).

3. A multi-layer co-extruded film delamination performance testing device according to claim 2, characterized in that: The two ends of the upper pressing plate (503) are respectively slidably connected to the two pressing slide grooves (505), and the two ends of the pressing frame (501) are respectively fixedly connected to the two sliding blocks (4).

4. A multi-layer co-extruded film delamination performance testing device according to claim 1, characterized in that: The top surface of the working platform (1) is fixedly connected to a lower heating plate (6), and the outer surface of the working platform (1) is fixedly connected to a fixing frame (7).

5. A multi-layer co-extruded film delamination performance testing device according to claim 4, characterized in that: The outer surface of the fixing frame (7) is fixedly connected to an electric push rod (8), the bottom end of the electric push rod (8) is fixedly connected to an upper heating plate (9), and the top surface of the lower heating plate (6) and the bottom surface of the upper heating plate (9) are both fixedly connected to a carbon fiber plate (10).

6. A multi-layer co-extruded film delamination performance testing device according to claim 1, characterized in that: Two support blocks (11) are fixedly connected to the top surface of the working platform (1), a slot is provided at the top of each support block (11), and a rotating roller (12) and a pressure roller (13) are provided between the two support blocks (11).

7. A multi-layer co-extruded film delamination performance testing device according to claim 6, characterized in that: The two ends of the rotating roller (12) are respectively rotatably connected to the two supporting blocks (11), and the two ends of the pressure roller (13) are respectively slidably connected to the two clamping grooves.

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