Anti-static plastic packaging film pre-flattening device for tensile property detection

Abstract

The utility model discloses an anti -static plastic seal membrane pre -stretching device of tensile property detection belongs to anti -static plastic seal membrane detection technical field, including detection base, fixedly installed fixed chuck of detection base, the movable chuck of movablely installed detection base, the drive assembly for driving movable chuck removal, be located between fixed chuck and movable chuck's compression assembly and install detection base and be located between fixed chuck and compression assembly's micrometer, and fixed chuck and movable chuck are used for fixing the both ends of plastic seal membrane, and the measuring head of micrometer leans on plastic seal membrane, and drive assembly includes the support plate of fixedly installed detection base and the upper pressure plate and lower pressure plate of slidablely installed on support plate, and the upper pressure plate and lower pressure plate are used for clamping fixed plastic seal membrane, the utility model discloses a pre -stretching device, guarantees every time detection when test object plastic seal membrane all is in consistent effective length, and the degree of flatness is consistent, guarantees the accuracy of collation test result.

Description

Technical Field

[0001] This utility model relates to the field of antistatic plastic sealant testing technology, and in particular, to a pre-flattening device for testing the tensile properties of antistatic plastic sealant. Background Technology

[0002] Antistatic plastic sealing film is a packaging material with antistatic properties, widely used in the electronics, food, pharmaceutical, and cosmetic industries. It is typically made of plastic and can seal items through heat sealing or compression sealing. Mechanical property testing of antistatic plastic sealing film includes tensile testing, tear testing, and puncture testing. Tensile testing primarily assesses the film's tensile strength and toughness. Currently, a common testing method involves pressing the film with a mandrel. In this process, the film is first straightened, then the mandrel is moved to press vertically onto the film. The tensile properties are assessed by observing the deformation of the film during the pressing process. At the beginning of the test, the plastic wrap needs to be straightened and flattened, especially during control tests. Generally, the plastic wrap needs to be straightened and flattened to a uniform state, that is, the degree of straightening of the plastic wrap is consistent. The traditional method is to fix one end of the plastic wrap with a slider and straighten and flatten it by moving the slider. However, although the flattening state of the plastic wrap can be adjusted to be consistent at the beginning of each test, the length of the plastic wrap after straightening is not the same each time. As we all know, the length of the straightened plastic wrap during testing will have a certain impact on the test results of the pull cord performance of the plastic wrap. Therefore, it is necessary for the applicant to improve the structure of the plastic wrap flattening device to overcome the above defects. Utility Model Content

[0003] The technical problem to be solved by this utility model is: in order to overcome the above-mentioned defects in the prior art, a pre-flattening device for testing the tensile properties of antistatic plastic sealant is provided to ensure the accuracy of the test results.

[0004] The technical solution adopted by this utility model to solve its technical problem is: a pre-flattening device for testing the tensile properties of antistatic plastic sealant film, including a testing base, a fixed clamp fixedly disposed on the testing base, a movable clamp movably disposed on the testing base, a driving component for driving the movable clamp to move, a clamping component disposed between the fixed clamp and the movable clamp, and a dial indicator installed on the testing base and located between the fixed clamp and the clamping component. The fixed clamp and the movable clamp are used to fix the two ends of the plastic sealant film, and the measuring head of the dial indicator abuts against the plastic sealant film. The driving component includes a support plate fixedly disposed on the testing base and an upper pressure plate and a lower pressure plate slidably disposed on the support plate. The upper pressure plate and the lower pressure plate are used to clamp and fix the plastic sealant film.

[0005] Furthermore, the upper pressure plate is located above the lower pressure plate, and the two are arranged opposite to each other. Both the upper pressure plate and the lower pressure plate are slidably disposed on the support plate along the longitudinal direction, and the upper pressure plate and the lower pressure plate can move closer to or further away from each other.

[0006] Furthermore, the upper and lower pressure plates are symmetrically arranged about the plastic sealant film, and the upper and lower pressure plates move simultaneously at the same speed.

[0007] Furthermore, a limiting groove is formed longitudinally on the side wall of the support plate, and the sides of both the upper and lower pressure plates are slidably connected to the limiting groove.

[0008] Furthermore, a fixing plate is fixedly connected to the top of the support plate, a clamping motor is mounted on the fixing plate, and a screw is fixedly connected to the output shaft of the clamping motor. The screw has threaded sections with opposite directions of thread at both ends, and the upper pressure plate and the lower pressure plate are respectively threadedly connected to the two threaded sections.

[0009] Furthermore, the fixed clamp includes a fixed base and a first pressure plate that is slidably mounted on the fixed base along the longitudinal direction. The fixed base is fixedly connected to the detection base. A first through groove is provided on the fixed base, and the first pressure plate is slidably mounted in the first through groove.

[0010] Furthermore, a first guide post is vertically fixedly connected to the top wall of the first through groove, and a first stud is rotatably connected to the top of the fixed seat. The first stud is threadedly connected to the first pressure plate, and the first pressure plate is slidably sleeved on the outside of the first guide post.

[0011] Furthermore, the movable chuck includes a movable seat slidably disposed on the detection base and a second pressure plate slidably disposed on the movable seat. The movable seat is provided with a second through groove, and the second pressure plate is slidably installed in the second through groove.

[0012] Furthermore, a second guide post is fixedly provided on the top wall of the second through groove, and a second stud is rotatably provided on the top of the movable seat. The second stud is threadedly connected to the second pressure plate, and the second pressure plate is slidably sleeved on the outside of the second guide post.

[0013] Furthermore, the detection base is provided with a sliding groove for the movable seat to slide. The drive assembly includes a motor mounted on the detection base and a lead screw connected to the output shaft of the motor. One end of the lead screw extends into the sliding groove and is threadedly connected to the movable seat.

[0014] The beneficial effects of this utility model are as follows: In the process of gradually straightening and flattening the antistatic plastic sealant, the plastic sealant will press against the dial indicator below. When the dial indicator pointer reaches a specific value, the plastic sealant is flattened in place. At this time, the clamping component can be driven to clamp and fix the end of the plastic sealant away from the fixing clamp, so as to ensure that the plastic sealant of the test object is in a consistent effective length and the degree of flattening is consistent in each test, thus ensuring the accuracy of the control test results. Attached Figure Description

[0015] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0016] Figure 1 This is a perspective view of the pre-flattening device for testing the tensile properties of antistatic plastic sealant film according to this utility model;

[0017] Figure 2 yes Figure 1 A perspective view of the pre-flattening device for testing the tensile properties of antistatic plastic sealant film from another angle.

[0018] Figure 3 yes Figure 1 The front view of the pre-flattening device for testing the tensile properties of antistatic plastic sealant film is shown.

[0019] In the diagram: 1. Detection base, 11. Slide groove, 2. Fixed chuck, 21. Fixed seat, 211. First through groove, 22. First pressure plate, 23. Guide post, 24. First stud, 241. Knob, 3. Movable chuck, 31. Movable seat, 311. Second through groove, 32. Second pressure plate, 33. Second guide post, 34. Second stud, 4. Drive assembly, 41. Motor, 42. Lead screw, 5. Clamping assembly, 51. Support plate, 511. Limit groove, 52. Upper pressure plate, 53. Lower pressure plate, 54. Fixed plate, 55. Clamping motor, 56. Screw, 6. Dial indicator, 7. Slide. Detailed Implementation

[0020] The present invention will now be described in detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the present invention, and therefore only show the components relevant to the present invention.

[0021] Please see Figures 1-3This utility model provides a pre-flattening device for testing the tensile properties of antistatic plastic sealant film, including a testing base 1, a fixed clamp 2, a movable clamp 3, a driving assembly 4, a clamping assembly 5, and a dial indicator 6. The fixed clamp 2 is fixedly installed on the testing base 1, and the movable clamp 3 is movably installed on the testing base 1. The movable clamp 3 can be moved closer to or away from the fixed clamp 2. The driving assembly 4 is used to drive the movable clamp 3 to move. The clamping assembly 5 is disposed between the fixed clamp 2 and the movable clamp 3. The dial indicator 6 is installed on the testing base 1 and located between the fixed clamp 2 and the clamping assembly 5.

[0022] During operation, one end of the antistatic plastic sealant is fixed to the fixed clamp 2, and the other end is fixed to the movable clamp 3. Then, the movable clamp 3 is driven by the drive assembly 4 to move away from the fixed clamp 2. During this process, the antistatic plastic sealant is gradually straightened and flattened. The straightened and flattened plastic sealant will press against the measuring head of the dial indicator 6 below. When the pointer of the dial indicator 6 reaches a specific value, the plastic sealant is flattened in place. At this time, the clamping assembly 5 can be driven to clamp and fix the end of the plastic sealant away from the fixed clamp 2, so as to ensure that the plastic sealant of the test object is at a consistent effective length and a consistent degree of flattening during each test, thus ensuring the accuracy of the control test results.

[0023] The testing base 1 has a flat plate structure. The fixing clamp 2 includes a fixing seat 21 and a first pressure plate 22 that is slidably mounted on the fixing seat 21 along the longitudinal direction. The fixing seat 21 is fixedly connected to the testing base 1. A first through groove 211 is horizontally opened on the fixing seat 21, which passes through the opposite side walls of the fixing seat 21. The first pressure plate 22 is slidably mounted in the first through groove 211. In use, one end of the plastic sealant is placed in the first through groove 211, and then the first pressure plate 22 is moved downward to squeeze and fix the plastic sealant between the first pressure plate 22 and the bottom wall of the first through groove 211.

[0024] In one specific embodiment, a first guide post 23 is vertically fixedly connected to the top wall of the first through groove 211, and a first stud 24 is vertically mounted on the top of the fixing base 21. The first stud 24 is rotatably connected to the fixing base 21. Understandably, a bearing is provided between the first stud 24 and the fixing base 21. The lower end of the first stud 24 extends into the first through groove 211. A first pressure plate 22 is slidably sleeved on the outside of the first guide post 23 along the longitudinal direction, and the first stud 24 is threadedly connected to the first pressure plate 22. Thus, when the user rotates the first stud 24, the first pressure plate 22 can be driven to move upward or downward along the longitudinal direction to release or press the end of the plastic sealing film.

[0025] The movable clamp 3 includes a movable seat 31 and a second pressure plate 32 that is slidably mounted on the movable seat 31 along the longitudinal direction. A second through groove 311 is horizontally opened on the movable seat 31, which passes through the opposite side walls of the movable seat 31. The second pressure plate 32 is slidably mounted in the second through groove 311. In use, the other end of the plastic sealant is placed in the second through groove 311, and then the second pressure plate 32 is moved downward to squeeze and fix the plastic sealant between the second pressure plate 32 and the bottom wall of the second through groove 311.

[0026] In one specific embodiment, a second guide post 33 is vertically fixedly connected to the top wall of the second through groove 311, and a second stud 34 is vertically mounted on the top of the movable seat 31. The second stud 34 is rotatably connected to the movable seat 31, and a bearing is provided at the connection between the second stud 34 and the movable seat 31. The lower end of the second stud 34 extends into the second through groove 311 and is threadedly connected to the second pressure plate 32. The second pressure plate 32 is slidably sleeved on the outside of the second guide post 33 along the longitudinal direction. Thus, when the user rotates the second stud 34, the second pressure plate 32 can be driven to move upward or downward along the longitudinal direction to release or press the end of the plastic sealant.

[0027] To facilitate the user's rotation of the first stud 24 and the second stud 34, a knob 241 for the user to hold and operate is fixedly installed on the top of both the first stud 24 and the second stud 34.

[0028] The movable seat 31 is slidably connected to the detection base 1. In this embodiment, a groove 11 is provided on the upper surface of the detection base 1, and the bottom of the movable seat 31 cooperates with and is slidably connected to the groove 11. The drive assembly 4 includes a motor 41 and a lead screw 42. The motor 41 is fixedly mounted on the outer side wall of the detection base 1, and the lead screw 42 is rotatably mounted on the detection base 1. One end of the lead screw 42 is fixedly connected to the output shaft of the motor 41, and the other end of the lead screw 42 extends into the groove 11 and is threadedly connected to the movable seat 31. The lead screw 42 passes through the movable seat 31. In use, the motor 41 is started, which drives the lead screw 42 to rotate, further driving the movable seat 31 to slide along the groove 11. The motor 41 is a forward and reverse motor, which allows the movable seat 31 to move away from or towards the fixed clamp 2.

[0029] The clamping assembly 5 includes a support plate 51, an upper pressure plate 52, and a lower pressure plate 53. The support plate 51 is vertically fixed to one side of the testing base 1. The upper pressure plate 52 is located above the lower pressure plate 53, and the two are arranged opposite each other. Both the upper pressure plate 52 and the lower pressure plate 53 are slidably mounted on the support plate 51 along the longitudinal direction. The upper pressure plate 52 and the lower pressure plate 53 can move closer or further apart from each other. In use, the upper pressure plate 52 is located above the plastic sealing film, and the lower pressure plate 53 is located below the plastic sealing film. When the plastic sealing film is flattened into place, that is, when the pointer of the dial indicator 6 reaches a specific value, the upper pressure plate 52 and the lower pressure plate 53 can be controlled to move closer to each other, ultimately squeezing and fixing the plastic sealing film. Since the distance between the clamping assembly 5 and the fixing clamp 2 is constant, the effective length of the plastic sealing film can be kept consistent in each test.

[0030] In this embodiment, the upper pressure plate 52 and the lower pressure plate 53 are symmetrically arranged about the plastic sealing film, and the upper pressure plate 52 and the lower pressure plate 53 move simultaneously at the same speed. As a preferred embodiment, a limiting groove 511 is formed longitudinally on the side wall of the support plate 51. The sides of the upper pressure plate 52 and the lower pressure plate 53 are slidably connected to the limiting groove 511, so that the upper pressure plate 52 and the lower pressure plate 53 can only move longitudinally and cannot rotate relative to the support plate 51. A fixing plate 54 is horizontally fixedly connected to the top of the support plate 51. A clamping motor 55 is fixedly installed on the fixing plate 54, and a screw 56 is rotatably installed on the fixing plate 54. One end of the screw 56 is fixedly connected to the output shaft of the clamping motor 55, and the other end of the screw 56 passes through the fixing plate 54 and is threadedly connected to both the upper pressure plate 52 and the lower pressure plate 53. Specifically, the screw 56 has two threaded sections with opposite directions of rotation, and the upper pressure plate 52 and the lower pressure plate 53 are respectively threadedly connected to the two threaded sections. Thus, when the clamping motor 55 is working, it can drive the upper pressure plate 52 and the lower pressure plate 53 to move simultaneously in the same direction or in opposite directions, thereby clamping and fixing or releasing the plastic sealing film. Furthermore, the clamping motor 55 is a forward and reverse rotating motor.

[0031] In this embodiment, a slide block 7 is slidably mounted on the test base 1 along the moving direction of the vertical movable clamp 3. The dial indicator 6 is fixedly mounted on the slide block 7. When the plastic seal film is in a flattened state, the dial indicator 6 is moved to the underside of the plastic seal film through the slide block 7. After being flattened into place, the dial indicator 6 can be moved out from under the plastic seal film by sliding the slide block 7 so as to perform tensile performance testing on the plastic seal film.

[0032] This invention relates to a pre-flattening device for testing the tensile properties of antistatic plastic sealant. During the process of gradually straightening and flattening the antistatic plastic sealant, the straightened and flattened sealant presses against a dial indicator 6 below. When the pointer of dial indicator 6 reaches a specific value, the sealant is flattened in place. At this point, the clamping component 5 can be driven to clamp and fix the end of the sealant away from the fixing clamp 2, ensuring that the sealant of the test object is at a consistent effective length and has a consistent degree of flattening during each test, thus guaranteeing the accuracy of the control test results.

[0033] Based on the above-described preferred embodiments of this utility model, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the scope of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A pre-flattening device for testing the tensile properties of antistatic plastic sealant, characterized in that: The device includes a testing base, a fixed chuck fixedly mounted on the testing base, a movable chuck movably mounted on the testing base, a driving assembly for driving the movable chuck to move, a clamping assembly disposed between the fixed chuck and the movable chuck, and a dial indicator mounted on the testing base and located between the fixed chuck and the clamping assembly. The fixed chuck and the movable chuck are used to fix both ends of the plastic seal film. The measuring head of the dial indicator abuts against the plastic seal film. The driving assembly includes a support plate fixedly mounted on the testing base and an upper pressure plate and a lower pressure plate slidably mounted on the support plate. The upper pressure plate and the lower pressure plate are used to clamp and fix the plastic seal film.

2. The pre-flattening device for detecting the tensile properties of an antistatic plastic packaging film according to claim 1, characterized in that: The upper pressure plate is located above the lower pressure plate and the two are arranged opposite to each other. Both the upper pressure plate and the lower pressure plate are slidably disposed on the support plate along the longitudinal direction. The upper pressure plate and the lower pressure plate can move closer to each other or further away from each other.

3. The pre-flattening device for detecting the tensile properties of an antistatic plastic packaging film according to claim 2, characterized in that: The upper and lower pressure plates are symmetrically arranged about the plastic sealant film, and the upper and lower pressure plates move simultaneously at the same speed.

4. The pre-flattening device for detecting the tensile properties of an antistatic plastic packaging film according to claim 3, characterized in that: The support plate has a limiting groove formed longitudinally on its side wall, and the sides of the upper pressure plate and the lower pressure plate are slidably connected to the limiting groove.

5. The pre-flattening device for detecting the tensile properties of an antistatic plastic packaging film according to claim 4, characterized in that: A fixing plate is fixedly connected to the top of the support plate, and a clamping motor is installed on the fixing plate. A screw is fixedly connected to the output shaft of the clamping motor. The screw has threaded sections with opposite directions of thread at both ends. The upper pressure plate and the lower pressure plate are respectively threadedly connected to the two threaded sections.

6. The pre-flattening device for detecting the tensile properties of an antistatic plastic packaging film according to claim 1, characterized in that: The fixed clamp includes a fixed base and a first pressure plate that is slidably mounted on the fixed base along the longitudinal direction. The fixed base is fixedly connected to the detection base. A first through groove is provided on the fixed base, and the first pressure plate is slidably mounted in the first through groove.

7. The pre-flattening device for detecting the tensile properties of an antistatic plastic packaging film according to claim 6, characterized in that: A first guide post is vertically fixedly connected to the top wall of the first through groove, and a first stud is rotatably connected to the top of the fixed seat. The first stud is threadedly connected to the first pressure plate, and the first pressure plate is slidably sleeved on the outside of the first guide post.

8. The pre-flattening device for detecting the tensile properties of an antistatic plastic packaging film according to claim 1, characterized in that: The movable chuck includes a movable seat slidably disposed on the detection base and a second pressure plate slidably disposed on the movable seat. The movable seat is provided with a second through groove, and the second pressure plate is slidably installed in the second through groove.

9. The pre-flattening device for detecting the tensile properties of an antistatic plastic packaging film according to claim 8, characterized in that: A second guide post is fixedly provided on the top wall of the second through groove, and a second stud is rotatably provided on the top of the movable seat. The second stud is threadedly connected to the second pressure plate, and the second pressure plate is slidably sleeved on the outside of the second guide post.

10. The pre-flattening device for detecting the tensile properties of an antistatic plastic packaging film according to claim 8, characterized in that: The detection base has a sliding groove for the movable seat to slide. The drive assembly includes a motor mounted on the detection base and a lead screw connected to the output shaft of the motor. One end of the lead screw extends into the sliding groove and is threadedly connected to the movable seat.

Images