CN117705584B - Device for aging test of polyethylene film - Google Patents

Device for aging test of polyethylene film Download PDF

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Publication number
CN117705584B
CN117705584B CN202410161678.1A CN202410161678A CN117705584B CN 117705584 B CN117705584 B CN 117705584B CN 202410161678 A CN202410161678 A CN 202410161678A CN 117705584 B CN117705584 B CN 117705584B
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film
clamping
clamping plate
frame
lifting seat
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CN117705584A (en
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徐莺
邓子辉
鹿启帅
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Changzhou Kaide New Material Technology Co ltd
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Changzhou Kaide New Material Technology Co ltd
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Abstract

The invention belongs to the technical field of film detection equipment, in particular to a device for ageing test of a polyethylene film, which comprises a base, wherein a pair of lifting mechanisms are symmetrically connected to the base; the two lifting mechanisms are respectively connected with an upper membrane clamping assembly and a lower membrane clamping assembly; the upper clamping film assembly comprises a first lifting seat, a fixing frame is fixedly connected to the first lifting seat, a turnover first clamping plate is connected to the fixing frame, and a second clamping plate capable of horizontally moving is connected to the fixing frame; the lower membrane clamping assembly comprises a second lifting seat, a connecting frame is connected to the second lifting seat, a pair of third clamping plates capable of horizontally moving are connected to the connecting frame, a cutter is fixedly connected to the bottom of each third clamping plate, and a pressure sensor is arranged on the second lifting seat; the upper clamping film component and the lower clamping film component are arranged, so that the film clamping, cutting and stretching detection can be automatically completed, and the problem of complex operation during film detection is solved.

Description

Device for aging test of polyethylene film
Technical Field
The invention relates to the technical field of film testing equipment, in particular to a device for ageing test of a polyethylene film.
Background
The film is a thin and soft transparent sheet and is made of plastics, adhesive, rubber or other materials; the scientific explanation of the film is as follows: a 2-dimensional material formed by atomic, molecular or ionic deposition on a substrate surface. Examples: optical films, composite films, superconducting films, polyester films, nylon films, plastic films, and the like. The film is widely used in the industries of electronic appliances, machinery, printing and the like. Films are typically tested for tensile strength by random sampling after production to detect the degree of aging of the film and thereby analyze the time the film can be stored.
When the film is tested, the two ends of the film are fixed respectively, then the film is stretched, after the film is pulled, the maximum stretching pressure which can be borne by the film is recorded, and the stretching strength of the film can be measured.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a device for ageing test of a polyethylene film, which can automatically clamp, stretch, shear and detect the film without manual operation and aims at solving the problems in the background art.
In order to achieve the technical purpose, the specific technical scheme of the invention is as follows, and the device for polyethylene film aging test provided by the invention comprises: the film winding drum is placed on the base, and a pair of lifting mechanisms are symmetrically connected to the base; the two lifting mechanisms are respectively connected with an upper membrane clamping assembly and a lower membrane clamping assembly; the upper film clamping assembly is used for clamping the film starting end on the film winding drum and comprises a first lifting seat, a fixing frame is fixedly connected to the first lifting seat, a turnover first clamping plate is connected to the fixing frame, and a second clamping plate capable of horizontally moving is connected to the fixing frame; the lower clamp membrane assembly is used for cutting off the film and clamping the tail end of the film, the lower clamp membrane assembly comprises a second lifting seat, a connecting frame is connected to the second lifting seat, a pair of third clamping plates capable of horizontally moving are connected to the connecting frame, the moving directions of the two third clamping plates are opposite, a cutter is fixedly connected to the bottom of each third clamping plate and used for cutting off the film, and a pressure sensor is mounted on the second lifting seat and connected with the connecting frame.
As a preferable technical scheme of the invention, the fixing frame is fixedly connected with a fixed block, the first clamping plate is rotatably connected to the fixed block, the fixing frame is provided with a horizontal first sliding hole, the first sliding hole is slidably connected with a moving block, and the second clamping plate is fixedly connected to the moving block.
As a preferable technical scheme of the invention, a tension spring is fixedly connected between the fixed block and the movable block, and a rotating motor for driving the first clamping plate to rotate is arranged on the fixed frame.
As a preferable technical scheme of the invention, the first clamping plate is coaxially connected with a rotating disc, the rotating disc is used for driving the moving block to move, an arc-shaped groove is formed in the side of the rotating disc, a roller matched with the rotating disc is connected to the moving block, and when the roller moves into the arc-shaped groove, the tension spring drives the second clamping plate to contact with the first clamping plate.
As a preferable technical scheme of the invention, the side surface of the first clamping plate is provided with a tearable adhesive layer, and the adhesive layer is used for sticking the film starting end on the film winding drum.
As a preferable technical scheme of the invention, a horizontal second sliding hole is formed in the connecting frame, a pair of sliding blocks are slidably connected in the second sliding hole, two third clamping plates are fixedly connected to the two sliding blocks respectively, a bidirectional screw is rotatably connected to the connecting frame and used for driving the two sliding blocks to move in different directions, thread lines with opposite directions are arranged on the surfaces of two ends of the bidirectional screw, and the two sliding blocks are respectively connected to two ends of the bidirectional screw in a threaded mode.
As a preferable technical scheme of the invention, one end of the bidirectional screw is fixedly connected with a pulley, one lifting mechanism surface is provided with a guide rail matched with the pulley, and the pulley drives the bidirectional screw to rotate when rolling along the guide rail surface so as to drive the two third clamping plates to move in different directions.
As a preferable technical scheme of the invention, the lifting mechanism comprises a guide frame which is vertically arranged, a screw rod is connected in the guide frame, and a driving motor for driving the screw rod to rotate is arranged at one end of the guide frame.
As a preferable technical scheme of the invention, the upper surface of the base is provided with a groove for placing the film winding drum, and a plurality of rotating wheels are connected in the groove.
The beneficial effects of the invention are as follows:
1. according to the invention, the upper clamping film component is provided with the turnover first clamping plate and the movable second clamping plate, the surface of the first clamping plate is provided with the adhesive layer, so that the starting end of a film can be adhered, then the turnover first clamping plate drives the second clamping plate to approach at the same time, the second clamping plate and the first clamping plate clamp the starting end of the film, and then the lower clamping film component is used for cutting off and clamping the lower end of the film, thereby achieving the purposes of automatically clamping, cutting off and stretching the film.
2. According to the invention, the lower film clamping assembly is provided with the bidirectional screw and the pulley, so that when the lower film clamping assembly moves downwards, the two third clamping plates can be driven to mutually approach to clamp the film; when the lower film clamping assembly moves downwards, the two third clamping plates can be driven to be away from each other to loosen the film, so that the clamping and fixing of the film can be conveniently controlled.
Drawings
Fig. 1 is a schematic structural diagram of an apparatus for aging test of polyethylene film according to the present invention.
Fig. 2 is a schematic front view of an apparatus for aging test of polyethylene film according to the present invention.
Fig. 3 is a schematic structural diagram of a base according to the present invention.
Fig. 4 is a schematic structural diagram of an upper membrane module according to the present invention.
Fig. 5 is another angular schematic view of the upper membrane module according to the present invention.
Fig. 6 is a partial enlarged view at a in fig. 5.
Fig. 7 is a schematic structural diagram of a lower membrane module according to the present invention.
Fig. 8 is another angular schematic view of the lower membrane module according to the present invention.
In the figure: 1. a base; 101. a groove; 102. a rotating wheel; 2. a lifting mechanism; 21. a guide frame; 22. a screw rod; 23. a driving motor; 3. an upper membrane clamping assembly; 31. a first lifting seat; 32. a fixing frame; 33. a first clamping plate; 331. an adhesive layer; 34. a second clamping plate; 35. a fixed block; 36. a moving block; 37. a first slide hole; 38. a tension spring; 39. a rotating disc; 310. an arc-shaped groove; 311. a roller; 312. a rotating electric machine; 4. a lower membrane clamping assembly; 41. a second lifting seat; 42. a connecting frame; 43. a slide block; 44. a third clamping plate; 45. a second slide hole; 46. a bidirectional screw; 47. a pulley; 48. a pressure sensor; 49. a cutter; 5. a guide rail; 6. a roll of film.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments.
Examples: the embodiment discloses a device for ageing test of polyethylene films, which is shown in fig. 1-8, and comprises a base 1, wherein a film winding drum 6 is arranged on the base 1, and a pair of lifting mechanisms 2 are symmetrically connected to the base 1; the two lifting mechanisms 2 are respectively connected with an upper membrane clamping assembly 3 and a lower membrane clamping assembly 4; the upper clamping film assembly 3 is clamped at the upper end of the film, the lower clamping film assembly 4 is clamped at the lower end of the film, and then the upper clamping film assembly 3 and the lower clamping film assembly 4 are driven to move through the lifting mechanism 2 to stretch the film, and the stretch resistance of the film is detected to detect the ageing degree of the film.
The lifting mechanism 2 comprises a guide frame 21 which is vertically arranged, the guide frame 21 is of a rectangular frame body structure, a screw rod 22 is connected in the guide frame 21, and a driving motor 23 for driving the screw rod 22 to rotate is arranged at one end of the guide frame 21; the screw rod 22 is driven to rotate by the driving motor 23 to control the movement of the upper and lower membrane clamping assemblies 3 and 4.
As shown in fig. 3, the upper surface of the base 1 is provided with a groove 101 for placing the film roll 6, and a plurality of rotating wheels 102 are connected in the groove 101; the friction force between the film winding drum 6 and the bottom of the groove 101 is reduced by the rotating wheel 102, so that the film winding drum 6 can be rotated conveniently, and the upper film clamping assembly 3 can pull the film.
As shown in fig. 4-6, the upper film clamping assembly 3 is used for clamping the film starting end on the film winding drum 6, the upper film clamping assembly 3 comprises a first lifting seat 31, the first lifting seat 31 is in threaded connection with a screw rod 22, a fixing frame 32 is fixedly connected to the first lifting seat 31, the fixing frame 32 is in an L-shaped structure, a turnover first clamping plate 33 is connected to the fixing frame 32, a rotating motor 312 for driving the first clamping plate 33 to rotate is mounted on the fixing frame 32, and a second clamping plate 34 capable of horizontally moving is connected to the fixing frame 32; the fixed frame 32 is fixedly connected with a fixed block 35, the first clamping plate 33 is rotatably connected to the fixed block 35, the fixed frame 32 is provided with a horizontal first sliding hole 37, the first sliding hole 37 is slidably connected with a moving block 36, and the second clamping plate 34 is fixedly connected to the moving block 36; a tension spring 38 is fixedly connected between the fixed block 35 and the movable block 36; the first clamping plate 33 is coaxially connected with a rotating disc 39, the rotating disc 39 is used for driving the moving block 36 to move, an arc-shaped groove 310 is formed in the side of the rotating disc 39, the moving block 36 is connected with a roller 311 matched with the rotating disc 39, when the roller 311 moves into the arc-shaped groove 310, the tension spring 38 drives the second clamping plate 34 to contact with the first clamping plate 33, a removable adhesive layer 331 is arranged on the side surface of the first clamping plate 33, the adhesive layer 331 is used for adhering the film starting end on the film winding drum 6, the adhesive layer 331 can be made of double-sided adhesive or the like, and the double-sided adhesive can be replaced after being used for 5-10 times; when the film is clamped at the starting end, the rotating motor 312 drives the first clamping plate 33 to turn over, so that the first clamping plate 33 is provided with the adhesive layer 331, meanwhile, the interval between the first clamping plate 33 and the second clamping plate 34 is increased, the upper clamping film component 3 is driven by the lifting mechanism 2 to descend to the position of the film winding drum, the adhesive layer 331 on the first clamping plate 33 is contacted with the surface of the starting end of the film, the starting end of the film is attached to the first clamping plate 33, then the rotating motor 312 drives the first clamping plate 33 to turn over by 90 degrees, the roller 311 rolls into the arc-shaped groove 310 in the turning process, the second clamping plate 34 moves towards the first clamping plate 33 under the tension of the tension spring 38, the second clamping plate 34 is contacted with the first clamping plate 33 and clamps and fixes the starting end of the film, and then the lifting mechanism 2 drives the upper clamping film component 3 to ascend to a proper position.
As shown in fig. 7-8, the lower membrane clamping assembly 4 is used for cutting and clamping the film at the tail end of the film, the lower membrane clamping assembly 4 comprises a second lifting seat 41, the second lifting seat 41 is in threaded connection with a screw rod 22, a connecting frame 42 is connected to the second lifting seat 41, the connecting frame 42 is movably connected with the second lifting seat 41, a pair of third clamping plates 44 capable of horizontally moving are connected to the connecting frame 42, the moving directions of the two third clamping plates 44 are opposite, a cutter 49 is fixedly connected to the bottom of the third clamping plates 44 and is used for cutting the film, a pressure sensor 48 is arranged on the second lifting seat 41, the pressure sensor 48 is connected with the connecting frame 42, the pressure sensor 48 is used for detecting the tensile force of the film, and the value of the pressure sensor 48 is zero in an unstressed state; the connecting frame 42 is provided with a horizontal second sliding hole 45, a pair of sliding blocks 43 are connected in a sliding manner in the second sliding hole 45, two third clamping plates 44 are respectively and fixedly connected to the two sliding blocks 43, the connecting frame 42 is rotationally connected with a bidirectional screw 46 for driving the two sliding blocks 43 to move in different directions, the surfaces of the two ends of the bidirectional screw 46 are provided with thread lines with opposite directions, and the two sliding blocks 43 are respectively and spirally connected to the two ends of the bidirectional screw 46; one end of the bidirectional screw rod 46 is fixedly connected with a pulley 47, a guide rail 5 matched with the pulley 47 is arranged on the surface of one lifting mechanism 2, and the pulley 47 drives the bidirectional screw rod 46 to rotate when rolling along the surface of the guide rail 5 so as to drive the two third clamping plates 44 to move in different directions; the motion mode is as follows: when the lower film clamping assembly 4 moves downwards, the pulley 47 rolls on the guide rail 5 to drive the bidirectional screw 46 to rotate, and drive the two third clamping plates 44 to mutually approach to clamp and cut off the lower end of the film; similarly, when the lower membrane clamping assembly 4 moves upwards, the two third clamping plates 44 are driven to be away from each other and loosen the thin membrane, so that the clamping and fixing of the lower end of the thin membrane are conveniently controlled; when the pulley 47 moves to the lower end of the guide rail 5, the two third clamping plates 44 are just in a state of clamping the film; when the pulley 47 moves to the upper end of the guide rail 5, the interval between the two third clamping plates 44 is at a maximum state; wherein, when the upper clamping film assembly 3 is lifted, the two third clamping plates 44 of the lower clamping film assembly 4 are in a separated state, and the upper clamping film assembly 3 passes through the middle of the two third clamping plates 44 without influencing the movement of the upper clamping film assembly 3.
Working principle: during detection, a film winding drum 6 is placed in a groove 101 on a base 1, the starting end of a film on the film winding drum 6 faces upwards, then a rotating motor 312 drives a first clamping plate 33 to turn over, one surface of the first clamping plate 33 with an adhesive layer 331 faces downwards, meanwhile, the interval between the first clamping plate 33 and a second clamping plate 34 is increased, an upper film clamping assembly 3 is driven to descend through a lifting mechanism 2 from the middle of a lower film clamping assembly 4 to the position of the film winding drum, the adhesive layer 331 on the first clamping plate 33 contacts with the surface of the starting end of the film, the starting end of the film is attached to the first clamping plate 33, then the rotating motor 312 drives the first clamping plate 33 to turn over 90 degrees, in the turning over process, a roller 311 rolls into an arc-shaped groove 310, the second clamping plate 34 moves towards the first clamping plate 33 under the tension of a tension spring 38, the second clamping plate 34 contacts with the first clamping plate 33 and clamps and fixes the starting end of the film, and then the lifting mechanism 2 drives the upper film clamping assembly 3 to ascend to a proper position; the film passes from the middle of two third splint 44, elevating system 2 drives down clamp membrane module 4 decline for two third splint 44 are close to each other and press from both sides tight to the film, and cut off the film through cutter 49, then drive clamp membrane module 3 through elevating system 2 and rise and stretch the film, the numerical value when breaking of film is recorded to the pressure sensor 48, detect out the stretch-proofing performance of film, whole testing process, check out equipment can accomplish the clamp of film and get, cut off, stretch-proofing detects whole flow, need not manual operation, the detection is convenient.
Finally, it should be noted that: in the description of the present invention, it should be noted that the azimuth or positional relationship indicated by the terms "vertical", "upper", "lower", "horizontal", etc. are based on the azimuth or positional relationship shown in the drawings, and are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the apparatus or element referred to must have a specific azimuth, be constructed and operated in a specific azimuth, and thus should not be construed as limiting the present invention.
The foregoing description is only a preferred embodiment of the present invention, and the present invention is not limited thereto, but it is to be understood that modifications and equivalents of some of the technical features described in the foregoing embodiments may be made by those skilled in the art, although the present invention has been described in detail with reference to the foregoing embodiments. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (5)

1. An apparatus for polyethylene film burn-in testing, comprising:
the film winding device comprises a base (1), wherein a film winding drum (6) is arranged on the base (1), and a pair of lifting mechanisms (2) are symmetrically connected to the base (1);
the two lifting mechanisms (2) are respectively connected with an upper membrane clamping assembly (3) and a lower membrane clamping assembly (4);
the upper film clamping assembly (3) is used for clamping the film starting end on the film winding drum (6), the upper film clamping assembly (3) comprises a first lifting seat (31), a fixing frame (32) is fixedly connected to the first lifting seat (31), a turnover first clamping plate (33) is connected to the fixing frame (32), and a second clamping plate (34) capable of horizontally moving is connected to the fixing frame (32);
the lower clamping film assembly (4) is used for cutting off and clamping the film at the tail end of the film, the lower clamping film assembly (4) comprises a second lifting seat (41), a connecting frame (42) is connected to the second lifting seat (41), a pair of third clamping plates (44) capable of horizontally moving are connected to the connecting frame (42), the moving directions of the two third clamping plates (44) are opposite, a cutter (49) is fixedly connected to the bottom of the third clamping plates (44) and used for cutting off the film, a pressure sensor (48) is arranged on the second lifting seat (41), and the pressure sensor (48) is connected with the connecting frame (42);
a fixed block (35) is fixedly connected to the fixed frame (32), the first clamping plate (33) is rotatably connected to the fixed block (35), the fixed frame (32) is provided with a horizontal first sliding hole (37), a moving block (36) is slidably connected to the first sliding hole (37), and the second clamping plate (34) is fixedly connected to the moving block (36);
a tension spring (38) is fixedly connected between the fixed block (35) and the movable block (36), and a rotating motor (312) for driving the first clamping plate (33) to rotate is arranged on the fixed frame (32);
a rotating disc (39) is coaxially connected to the first clamping plate (33), the rotating disc (39) is used for driving the moving block (36) to move, an arc-shaped groove (310) is formed in the side of the rotating disc (39), a roller (311) matched with the rotating disc (39) is connected to the moving block (36), and when the roller (311) moves into the arc-shaped groove (310), a tension spring (38) drives the second clamping plate (34) to contact with the first clamping plate (33);
the side of the first clamping plate (33) is provided with a tearable adhesive layer (331), and the adhesive layer (331) is used for sticking a film starting end on the film winding drum (6).
2. The device for aging testing of polyethylene films according to claim 1, wherein a horizontal second sliding hole (45) is formed in the connecting frame (42), a pair of sliding blocks (43) are slidably connected in the second sliding hole (45), two third clamping plates (44) are fixedly connected to the two sliding blocks (43) respectively, a bidirectional screw (46) is rotatably connected to the connecting frame (42) and used for driving the two sliding blocks (43) to move in different directions, threads with opposite directions are formed on the surfaces of two ends of the bidirectional screw (46), and the two sliding blocks (43) are connected to two ends of the bidirectional screw (46) in a threaded mode respectively.
3. The device for aging test of polyethylene films according to claim 2, wherein one end of the bidirectional screw (46) is fixedly connected with a pulley (47), a guide rail (5) matched with the pulley (47) is arranged on the surface of one lifting mechanism (2), and the pulley (47) drives the bidirectional screw (46) to rotate when rolling along the surface of the guide rail (5) to drive the two third clamping plates (44) to move in different directions.
4. A device for ageing tests of polyethylene films according to claim 3, characterized in that the lifting mechanism (2) comprises a vertically arranged guide frame (21), a screw rod (22) is connected in the guide frame (21), and a driving motor (23) for driving the screw rod (22) to rotate is arranged at one end of the guide frame (21).
5. The device for polyethylene film aging test according to claim 4, wherein the upper surface of the base (1) is provided with a groove (101) for placing the film roll (6), and a plurality of rotating wheels (102) are connected to the groove (101).
CN202410161678.1A 2024-02-05 2024-02-05 Device for aging test of polyethylene film Active CN117705584B (en)

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CN117705584B true CN117705584B (en) 2024-04-05

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