A viscoelasticity testing device and method for polyester film

Abstract

The application relates to the technical field of polyester film detection, and discloses a viscoelasticity detection device and method for polyester film, which comprises a mounting seat, an infrared range finder, an assembling seat, pressing parts, a double-shaft motor, a sliding plate, a regulating knob and a regulating screw, wherein the mounting seat is used for supporting the polyester film, the infrared range finder is arranged on the mounting seat and is used for monitoring the deformation distance of the polyester film, and the assembling seat is arranged on the mounting seat. The multiple pressing parts slide along the waist-shaped sliding hole to stretch the polyester film outward. A double-shaft motor is designed to realize the synchronous outward movement of the multiple pressing parts. The extension direction of the waist-shaped sliding hole is adjusted to adjust the outward stretching direction of the polyester film, so that the viscoelasticity detection device can conveniently stretch the polyester film in multiple directions at the same time, the viscoelasticity detection of the polyester film in multiple directions is facilitated, and the device is convenient to use.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of polyester film detection, and particularly relates to a viscoelasticity detection device and method for polyester film. BACKGROUND

[0002] As a high-performance polymer material, polyester film is widely used in packaging, electronics, optics and other fields. Its viscoelastic behavior directly affects the mechanical strength, dimensional stability and processing performance of the product. Therefore, when detecting the polyester film, the viscoelasticity detection process of the polyester film is involved.

[0003] When detecting the viscoelasticity of the polyester film, a clamp is usually used to apply stress to the polyester film to cause elastic deformation. After the polyester film is stretched to a certain extent, the clamp is released, and the recovery degree of the polyester film within a specified time is detected by an infrared distance meter, thereby completing the detection process of the viscoelasticity of the polyester film. However, when detecting the viscoelasticity of the polyester film, the viscoelasticity of the polyester film is usually detected by unidirectional stretching of the polyester film. For example, when the polyester film is stretched longitudinally, the polyester film hardly stretches transversely, which is not convenient for stretching the viscoelasticity of the polyester film in multiple directions. The conventional unidirectional stretching detection device cannot accurately represent the multi-directional coupling effect of the polyester film, resulting in the technical problem of low efficiency when detecting the viscoelasticity of the polyester film. Therefore, the present application provides a viscoelasticity detection device and method for polyester film to solve the above problems. SUMMARY

[0004] Therefore, the present application provides a viscoelasticity detection device and method for polyester film to solve the above problems.

[0005] The technical scheme of the present application is as follows: The present application provides a viscoelasticity detection device for polyester film, comprising a mounting seat, an infrared distance meter, an assembly seat, a compression component, a double-shaft motor, a sliding plate, a control element and a control screw rod, wherein,

[0006] The mounting seat is used to support the polyester film, and the infrared distance meter is arranged on the mounting seat to monitor the deformation distance of the polyester film.

[0007] The assembly seat is arranged on the mounting seat, and a plurality of waist-shaped sliding holes are formed in the assembly seat, and the plurality of waist-shaped sliding holes are distributed equidistantly in a circumferential direction.

[0008] A plurality of pressing components are respectively connected with the plurality of waist-shaped sliding holes in a sliding mode, and are used for pressing the polyester film towards the mounting base;

[0009] A double-shaft motor is arranged on the mounting base, and at least two pressing components are arranged at two output ends of the double-shaft motor;

[0010] Two sliding plates are respectively arranged at the two output ends of the double-shaft motor in a sliding mode, and slide along the length direction of the mounting base;

[0011] A control member is connected with the sliding plates, and is used for pushing the pressing components in the horizontal direction of the mounting base;

[0012] A control screw rod is fixedly connected with the two output ends of the double-shaft motor, and is threadedly connected with the sliding plates.

[0013] On the basis of the above technical scheme, preferably, the number of the waist-shaped sliding holes is four, and the four waist-shaped sliding holes are inclined by 45° with respect to the length direction of the mounting base.

[0014] On the basis of the above technical scheme, preferably, the control member comprises a first clamping plate and a second clamping plate, wherein,

[0015] The first clamping plate and the second clamping plate are respectively arranged at opposite sides of the pressing components, the first clamping plate is fixedly connected with the second clamping plate through a connecting rod, and a through hole is formed in the first clamping plate and the second clamping plate for the control screw rod to pass through.

[0016] On the basis of the above technical scheme, preferably, the pressing component comprises a mounting cylinder, a threaded rod and a pressing block, wherein,

[0017] The mounting cylinder passes through the waist-shaped sliding hole and is connected with the mounting base in a sliding mode, a threaded hole is formed in the inner side of the mounting cylinder, and the threaded rod is threadedly connected with the inner side of the threaded hole;

[0018] The pressing block is arranged at the end of the threaded rod in a rotating mode, and a friction pad is arranged at the bottom of the pressing block.

[0019] On the basis of the above technical scheme, preferably, the circumferential wall of the mounting cylinder abuts against the hole wall of the waist-shaped sliding hole, and two limiting plates are arranged at the circumferential side of the mounting cylinder, the two limiting plates are respectively arranged at two sides of the mounting base, and abut against the mounting base.

[0020] On the basis of the above technical scheme, preferably, the device further comprises a force gauge and a spring, wherein,

[0021] The regulating part is in sliding connection with the assembly seat, and the force gauge is arranged on one side of the sliding plate close to the regulating part, and the spring is connected with the force gauge and the regulating part.

[0022] On the basis of the above technical scheme, preferably, further comprising a regulating plate, a telescopic rod, a regulating motor and a regulating tooth column, wherein,

[0023] The end of the threaded rod is provided with a regulating gear;

[0024] The regulating plate comprises a lower regulating plate and an upper regulating plate fixedly connected with each other, the upper regulating plate is located above the lower regulating plate, and the lower regulating plate is in engagement with the regulating gear;

[0025] One end of the telescopic rod is fixedly connected with the lower regulating plate, the other end of the telescopic rod is in sliding connection with the assembly seat, and the sliding direction of the telescopic rod is the same as the sliding direction of the pressing component;

[0026] The regulating motor is arranged on the assembly seat, and the regulating tooth column is arranged on one side of the output end of the regulating motor, and the regulating tooth column is in engagement with a plurality of the upper regulating plates.

[0027] On the basis of the above technical scheme, preferably, further comprising a telescopic shaft, a mounting disc, a sliding rod and an electric push rod, wherein,

[0028] The telescopic shaft is in sliding connection with the output end of the regulating motor, and the regulating tooth column is arranged on the telescopic shaft;

[0029] The mounting disc is arranged on the circumferential side of the telescopic shaft, a plurality of sliding rods are in sliding connection with the mounting disc, and a plurality of the sliding rods are fixedly connected with a plurality of the upper regulating plates respectively;

[0030] The electric push rod is arranged on the assembly seat, and the telescopic end of the electric push rod is in abutment with the bottom of the mounting disc.

[0031] On the basis of the above technical scheme, preferably, further comprising a mounting table, wherein,

[0032] The mounting table is arranged on the assembly seat, and the mounting table is a hollow square frame, a first mounting platform and a second mounting platform are formed on the mounting table, the first mounting platform and the second mounting platform are distributed in the height direction, the double-shaft motor is arranged on the first mounting platform, and the regulating motor is arranged on the second mounting platform.

[0033] The application further provides a viscoelasticity detection method for a polyester film, which is completed by using the viscoelasticity detection device for the polyester film and comprises the following steps:

[0034] S1, the polyester film is laid in the middle position of the mounting seat, and four pressing components are adjusted to press the four corners of the polyester film;

[0035] S2, start the double-shaft motor, drive two sliding plates to move away from each other at the same time through two adjusting screws, at this time, the two adjusting tools push multiple pressing components to slide outward synchronously, and the pressing components pull the polyester film outward;

[0036] S3, adjust multiple pressing components to simultaneously separate from the polyester film, test the deformation amount of the polyester film within a certain time through the infrared range finder, and complete the viscoelasticity detection of the polyester film.

[0037] The viscoelasticity detection device and method for polyester film have the following beneficial effects compared with the prior art:

[0038] (1) The multiple pressing components are pushed outward synchronously by the two adjusting tools to complete the outward pulling treatment of the polyester film, the viscoelasticity detection device for the polyester film of the present application is used to pull the polyester film outward by sliding the multiple pressing components along the waist-shaped sliding hole, a double-shaft motor is designed, which can realize the synchronous outward movement of the multiple pressing components, the extension direction of the waist-shaped sliding hole is adjusted to adjust the outward stretching direction of the polyester film, so that the viscoelasticity detection device of the present application can conveniently stretch the polyester film in multiple directions at the same time, and the viscoelasticity detection of the polyester film in multiple directions is facilitated, and the use is convenient.

[0039] (2) The force gauge is arranged between the sliding plate and the adjusting tool, so that when the pressing component is moved by the adjusting tool, the elastic force of the polyester film applied to the pressing component can be applied to the force gauge synchronously, the elastic force generated by the polyester film when the polyester film is stretched can be detected in real time by the force gauge, and the elastic detection of the polyester film is completed, which is convenient to use.

[0040] (3) The adjusting motor is arranged, and when it is necessary to adjust the pressing block to simultaneously separate from the polyester film, the adjusting plate is adjusted to move downward until the lower adjusting plate is engaged with the adjusting gear, at this time, the upper adjusting plate is synchronously engaged with the adjusting tooth column, the adjusting motor is started, the adjusting motor drives the adjusting tooth column to rotate, the adjusting tooth column drives multiple upper adjusting plates engaged therewith to move towards each other at the same time, thereby completing the simultaneous driving rotation treatment of the adjusting gear, and multiple pressing blocks are simultaneously separated from the polyester film through the threaded rods of the multiple adjusting gears rotating at the same time, thereby completing the simultaneous loosening treatment of the polyester film. The upper adjusting plates are arranged in an upper and lower distribution mode, so that the adjusting tooth column can drive multiple upper adjusting plates to move at the same time, and the viscoelasticity detection device only needs to be provided with one adjusting motor, which can complete the simultaneous loosening treatment of multiple pressing components, and the use is convenient. BRIEF DESCRIPTION OF DRAWINGS

[0041] In order to make the technical solutions in the embodiments of the present application or the prior art clearer, the accompanying drawings needed in the embodiments or prior art description will be briefly introduced. Obviously, the accompanying drawings in the following description only show some embodiments of the present application, and for those skilled in the art, other drawings can be obtained based on these drawings without any creative effort.

[0042] Figure 1 It is a front perspective view of the viscoelasticity detection device for polyester film of the present application.

[0043] Figure 2 It is a top perspective view of the viscoelasticity detection device for polyester film of the present application.

[0044] Figure 3 It is a right view of the structure at the mounting seat of the viscoelasticity detection device for polyester film of the present application.

[0045] Figure 4 It is a sectional view of the structure at A-A of the viscoelasticity detection device for polyester film of the present application. Figure 3

[0046] Figure 5 It is a perspective view of the pressing component of the viscoelasticity detection device for polyester film of the present application.

[0047] Figure 6 It is a sectional view of the pressing component of the viscoelasticity detection device for polyester film of the present application.

[0048] Figure 7 It is a schematic view of the connection mode of the sliding plate and the mounting seat of the viscoelasticity detection device for polyester film of the present application.

[0049] Figure 8 It is a schematic view of the connection mode of the regulating plate of the viscoelasticity detection device for polyester film of the present application.

[0050] Figure 9 It is a perspective schematic view of the structure at the mounting table of the viscoelasticity detection device for polyester film of the present application.

[0051] ​In the diagram: 11. Mounting base; 12. Infrared rangefinder; 13. Assembly base; 131. Waist-shaped sliding hole; 132. Waist-shaped sliding groove; 2. Clamping component; 21. Mounting cylinder; 211. Threaded hole; 22. Threaded rod; 23. Clamping block; 24. Adjusting gear; 25. Limiting plate; 31. Dual-axis motor; 32. Sliding plate; 33. Adjustment control; 331. Through hole; 332. First clamping plate; 333. Second clamping plate Plate; 334, Connecting rod; 34, Adjusting screw; 35, Force gauge; 36, Spring; 41, Adjusting plate; 411, Lower adjusting plate; 412, Upper adjusting plate; 42, Telescopic rod; 51, Adjusting motor; 52, Adjusting gear; 61, Telescopic shaft; 62, Mounting plate; 621, Sliding groove; 63, Sliding rod; 64, Electric push rod; 7, Mounting platform; 71, First mounting platform; 72, Second mounting platform. Detailed Implementation

[0052] The technical solutions of the present invention will be clearly and completely described below with reference to the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0053] like Figures 1-9 As shown, the viscoelasticity testing device for polyester film of the present invention includes a mounting base 11, an infrared rangefinder 12, an assembly base 13, a clamping component 2, a dual-axis motor 31, a sliding plate 32, an adjustment control 33, and an adjustment screw 34. The mounting base 11 supports the polyester film, and the infrared rangefinder 12 is mounted on the mounting base 11 to monitor the deformation distance of the polyester film. The assembly base 13 is mounted on the mounting base 11 and has multiple oblong sliding holes 131, which are equidistantly distributed circumferentially. Multiple clamping components 2 slide against the multiple oblong sliding holes 131. A dynamic connection is used to press the polyester film closer to the mounting base 11; a dual-axis motor 31 is mounted on the mounting base 13, and at least two pressing components 2 are provided at the two output ends of the dual-axis motor 31; two sliding plates 32 are slidably mounted on the mounting base 13 and are respectively located at the two output ends of the dual-axis motor 31, and the sliding plates 32 slide in the length direction of the mounting base 13; an adjustment control 33 is connected to the sliding plates 32 and is used to push and press the pressing components 2 in the horizontal direction of the mounting base 13; an adjustment screw 34 is fixedly connected to the two output ends of the dual-axis motor 31 and threadedly connected to the sliding plates 32.

[0054] In specific implementation, the mounting seat 11 and the assembly seat 13 are square seats, adjacent two sides of the mounting seat 11 are provided with protrusions, and the two infrared distance meters 12 are arranged on the adjacent two sides of the mounting seat 11 respectively, for testing displacement effects of the polyester film in different directions.

[0055] In specific implementation, the two sides of the assembly seat 13 are provided with protrusions for sliding connection of the control knobs 33, and the assembly seat 13 is provided with a waist-shaped sliding groove 132 for sliding connection of the sliding plates 32.

[0056] In specific implementation, the polyester film is laid on the middle position of the mounting seat 11, and the four corners of the polyester film are pressed by the four pressing components 2; the double-shaft motor 31 is started, at this time, the two output shafts of the double-shaft motor 31 drive the two control lead screws 34 to rotate reversely at the same time, the two control lead screws 34 drive the two sliding plates 32 to move to the sides away from each other at the same time, the sliding plates 32 drive the two control knobs 33 to move at the same time, the two control knobs 33 push the plurality of pressing components 2 to slide outward synchronously, so as to complete the outward pulling treatment of the polyester film, the plurality of pressing components 2 are controlled to be separated from the polyester film at the same time, the deformation amount of the polyester film in a certain time is tested by the infrared distance meter 12, and the detection treatment of the viscoelasticity of the polyester film is completed.

[0057] The viscoelasticity detection device for the polyester film provided by the application can stretch the polyester film outward by sliding the plurality of pressing components 2 along the waist-shaped sliding holes 131, can realize the synchronous outward movement of the plurality of pressing components 2 by designing a double-shaft motor 31, can adjust the stretching direction of the polyester film by adjusting the extension direction of the waist-shaped sliding holes 131, so that the viscoelasticity detection device for the polyester film provided by the application can conveniently stretch the polyester film in multiple directions at the same time, can conveniently detect the viscoelasticity of the polyester film in multiple directions, and is convenient to use.

[0058] As a preferred implementation, the number of the waist-shaped sliding holes 131 is four, and the four waist-shaped sliding holes 131 are inclined by 45° with respect to the length direction of the assembly seat 13.

[0059] In this way, each pressing component 2 can move the same distance in the length and width directions of the assembly seat 13 at the same time, so that the pressing component 2 of the application can uniformly stretch the four corners of the polyester film outward, which is convenient to use.

[0060] The control knob 33 comprises a first clamping plate 332 and a second clamping plate 333, wherein the first clamping plate 332 and the second clamping plate 333 are respectively located on the opposite sides of the pressing component 2, the first clamping plate 332 is fixedly connected with the second clamping plate 333 through a connecting rod 334, and the first clamping plate 332 and the second clamping plate 333 are both provided with a penetrating hole 331 for penetrating the control lead screw 34.

[0061] The clamping plate 332 and the clamping plate 333 limit the compression component 2 on both sides of the compression component 2, so that the clamping plate can drive the compression component 2 to move together.

[0062] As a preferred embodiment, the compression component 2 comprises a mounting cylinder 21, a threaded rod 22 and a compression block 23, wherein the mounting cylinder 21 passes through the waist-shaped sliding hole 131 and is in sliding connection with the assembly seat 13, the inside of the mounting cylinder 21 is provided with a threaded hole 211, and the threaded rod 22 is in threaded connection with the inside of the threaded hole 211; the compression block 23 is rotationally arranged at the end of the threaded rod 22, and the bottom of the compression block 23 is provided with a friction pad.

[0063] In a specific implementation, when it is necessary to compress the polyester film on the mounting seat 11, the threaded rod 22 is controlled to rotate, at this time, the threaded rod 22 moves downward under the action of the mounting cylinder 21 and drives the compression block 23 to move downward, and the compression block 23 extrudes the polyester film, so as to complete the compression treatment of the polyester film. When it is necessary to detect the viscoelasticity of the polyester film, the threaded rod 22 is controlled to rotate at the same time.

[0064] The peripheral wall of the mounting cylinder 21 abuts against the hole wall of the waist-shaped sliding hole 131, and the peripheral side of the mounting cylinder 21 is provided with two limiting plates 25, which are respectively located on both sides of the assembly seat 13 and abut against the assembly seat 13.

[0065] In this way, under the limitation of the limiting plate 25, the connection stability of the mounting cylinder 21 is increased.

[0066] As a preferred embodiment, a force gauge 35 and a spring 36 are further included, wherein the control member 33 is in sliding connection with the assembly seat 13, the force gauge 35 is arranged on the side of the sliding plate 32 close to the control member 33, and the spring 36 is connected with the force gauge 35 and the control member 33.

[0067] By arranging the force gauge 35 between the sliding plate 32 and the control member 33, when the control member 33 pushes and moves the compression component 2, the elastic force of the polyester film applied to the compression component 2 can be synchronously applied to the force gauge 35 through the spring 36, and the elastic force generated by the polyester film when the polyester film is stretched can be detected in real time through the force gauge 35, so as to complete the elastic detection treatment of the polyester film, which is convenient to use.

[0068] As a preferred embodiment, the device further comprises a regulating plate 41, an extension rod 42, a regulating motor 51 and a regulating tooth column 52, wherein the end of the threaded rod 22 is provided with a regulating gear 24; the regulating plate 41 comprises a lower regulating plate 411 and an upper regulating plate 412 fixedly connected with each other, the upper regulating plate 412 is located above the lower regulating plate 411, and the lower regulating plate 411 is engaged with the regulating gear 24; one end of the extension rod 42 is fixedly connected with the lower regulating plate 411, the other end of the extension rod 42 is slidably connected with the assembly seat 13, and the sliding direction of the extension rod 42 is the same as the sliding direction of the pressing part 2; the regulating motor 51 is arranged on the assembly seat 13, and the regulating tooth column 52 is arranged on the output end side of the regulating motor 51, and the regulating tooth column 52 is engaged with the plurality of upper regulating plates 412.

[0069] In specific implementation, the extension rod 42 is in an extended state, the regulating plate 41 is located above the regulating gear 24 and is disengaged from the regulating gear 24, so that the mounting cylinder 21 can normally slide. When it is required to simultaneously release the pressing blocks 23, the extension rod 42 is regulated to be retracted, the regulating plate 41 is engaged with the regulating gear 24, and the regulating plate 41 is moved to regulate the plurality of regulating gears 24 to simultaneously rotate.

[0070] It should be noted that the height of the regulating plate 41 is adapted to the movable distance of the regulating gear 24, so that the regulating gear 24 can still be engaged with the regulating plate 41 after moving.

[0071] Specifically, when it is required to simultaneously release the polyester film from the pressing blocks 23, the regulating plate 41 is adjusted to move downward until the lower regulating plate 411 is engaged with the regulating gear 24, at this time, the upper regulating plate 412 is simultaneously engaged with the regulating tooth column 52, the regulating motor 51 is started, the regulating motor 51 drives the regulating tooth column 52 to rotate, the regulating tooth column 52 drives the plurality of upper regulating plates 412 engaged therewith to simultaneously move towards each other, thereby completing the simultaneous driving and rotating process of the regulating gears 24, and the plurality of pressing blocks 23 are simultaneously released from the polyester film by the threaded rod 22, thereby completing the simultaneous releasing process of the polyester film.

[0072] By arranging the plurality of upper regulating plates 412 to be distributed above and below, the regulating tooth column 52 can simultaneously drive the plurality of upper regulating plates 412 to move, the viscoelasticity detection device only needs to be provided with one regulating motor 51, and the simultaneous releasing process of the plurality of pressing parts 2 can be completed, thereby being convenient to use.

[0073] The telescopic shaft 61, the mounting disc 62, the slide rod 63 and the electric push rod 64, wherein the telescopic shaft 61 is in sliding connection with the output end of the control motor 51, and the control tooth column 52 is arranged on the telescopic shaft 61; the mounting disc 62 is arranged on the side of the telescopic shaft 61, and a plurality of slide rods 63 are in sliding connection with the mounting disc 62, and the plurality of slide rods 63 are respectively fixedly connected with the plurality of control plates 412; the electric push rod 64 is arranged on the assembly seat 13, and the telescopic end of the electric push rod 64 is in abutment with the bottom of the mounting disc 62.

[0074] In specific implementation, a plurality of sliding grooves 621 are formed in the mounting disc 62 and are in sliding connection with the slide rods 63.

[0075] In specific implementation, the plurality of control plate members 41 move up and down along with the mounting disc 62 under the support of the slide rods 63.

[0076] When it is necessary to adjust the movement of the plurality of pressing components 2, the telescopic end of the electric push rod 64 is elongated, the electric push rod 64 drives the mounting disc 62 to move upward, the mounting disc 62 drives the plurality of control plate members 41 to move upward through the slide rods 63, so that the control plate members 41 are separated from the pressing components 2, and the pressing components 2 can move normally, and at this time, the telescopic shaft 61 drives the control tooth column 52 to move upward synchronously along with the control plate members 41.

[0077] When it is necessary to control the plurality of pressing components 2 to be separated from the polyester film at the same time through the control plate members 41, the telescopic end of the electric push rod 64 is retracted, and the mounting disc 62 naturally falls under the action of its own gravity.

[0078] In this way, only one electric push rod 64 is arranged to drive the plurality of control plate members 41 to move up and down at the same time, which is convenient to use.

[0079] As a preferred embodiment, the mounting table 7 is further arranged, wherein the mounting table 7 is arranged on the assembly seat 13, and the mounting table 7 is a hollow square frame, the first mounting platform 71 and the second mounting platform 72 are formed on the mounting table 7, the first mounting platform 71 and the second mounting platform 72 are distributed in the height direction, the double-shaft motor 31 is arranged on the first mounting platform 71, and the control motor 51 is arranged on the second mounting platform 72.

[0080] In specific implementation, the mounting table 7 is arranged at the middle position of the assembly seat 13.

[0081] Through the arrangement of the mounting table 7, the driving components of the viscoelasticity detection device are concentrated together, which is convenient for subsequent maintenance and processing of the driving components, and is convenient to use.

[0082] The application further provides a viscoelasticity detection method for a polyester film, which is completed by the viscoelasticity detection device for the polyester film and includes the following steps:

[0083] Step one: polyester film is laid in the middle of the installation seat 11, and four compression components 2 are adjusted to compress the four corners of the polyester film;

[0084] Step two: start the double-shaft motor 31, and drive the two sliding plates 32 to move away from each other through the two adjusting screws 34, at this time the two adjusting components 33 push the plurality of compression components 2 to slide outward synchronously, and the compression components 2 pull the polyester film outward;

[0085] Step three: adjust the plurality of compression components 2 to simultaneously separate from the polyester film, and test the deformation amount of the polyester film within a certain time through the infrared range finder 12, to complete the viscoelasticity detection of the polyester film.

[0086] The above only describes the preferred embodiments of the present application and is not intended to limit the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A viscoelasticity testing device for polyester films, characterized in that: The system includes a mounting base, an infrared rangefinder, an assembly base, a clamping component, a dual-axis motor, a sliding plate, an adjustment control, an adjustment screw, an adjustment plate, a telescopic rod, an adjustment motor, and an adjustment gear. The clamping component includes a mounting cylinder, a threaded rod, and a clamping block. The mounting base is used to support the polyester film, and the infrared rangefinder is mounted on the mounting base to monitor the deformation distance of the polyester film. An assembly base is provided on the mounting base, and the assembly base is provided with a plurality of waist-shaped sliding holes, which are distributed circumferentially at equal intervals. Multiple pressing components are slidably connected to multiple waist-shaped sliding holes, respectively, for pressing the polyester film towards the mounting base; A dual-axis motor is mounted on the mounting base, and at least two clamping components are provided at the two output ends of the dual-axis motor. Two sliding plates are slidably disposed on the mounting base and located at the two output ends of the dual-axis motor, respectively. The sliding plates slide along the length of the mounting base. An adjustment control, connected to the sliding plate, is used to push the clamping component in the horizontal direction of the mounting base; The adjusting screw is fixedly connected to the two output ends of the dual-axis motor and threadedly connected to the sliding plate. The number of the waist-shaped sliding holes is four, and the four waist-shaped sliding holes are inclined at 45° relative to the length direction of the assembly base; The mounting cylinder passes through the waist-shaped sliding hole and is slidably connected to the mounting base. A threaded hole is provided on the inner side of the mounting cylinder, and the threaded rod is threadedly connected to the inner side of the threaded hole. A clamping block is rotatably mounted at the end of the threaded rod, and a friction pad is provided at the bottom of the clamping block; The threaded rod is provided with an adjusting gear at its end; the adjusting plate includes a lower adjusting plate and an upper adjusting plate that are fixedly connected to each other, the upper adjusting plate is located above the lower adjusting plate, and the lower adjusting plate meshes with the adjusting gear; one end of the telescopic rod is fixedly connected to the lower adjusting plate, and the other end of the telescopic rod is slidably connected to the mounting base, and the sliding direction of the telescopic rod is the same as the sliding direction of the pressing component; A control motor is mounted on the mounting base, and the control gear is located on one side of the output end of the control motor. The control gear meshes with multiple upper control plates.

2. The viscoelasticity testing device for polyester films as described in claim 1, characterized in that: The adjustment control includes a first clamping plate and a second clamping plate, wherein... The first clamping plate and the second clamping plate are located on opposite sides of the clamping component, and the first clamping plate is fixedly connected to the second clamping plate through a connecting rod. Both the first clamping plate and the second clamping plate are provided with through holes for the adjusting screw to pass through.

3. The viscoelasticity testing device for polyester films as described in claim 1, characterized in that: The peripheral wall of the mounting cylinder abuts against the wall of the waist-shaped sliding hole, and two limiting plates are provided on the periphery of the mounting cylinder. The two limiting plates are respectively located on both sides of the assembly base and abut against the assembly base.

4. The viscoelasticity testing device for polyester films as described in claim 1, characterized in that: It also includes a force gauge and a spring, among which, The adjustment control is slidably connected to the mounting base, and the force sensor is located on the side of the sliding plate near the adjustment control. The spring is connected to the force sensor and the adjustment control.

5. The viscoelasticity testing device for polyester films as described in claim 1, characterized in that: It also includes a telescopic shaft, mounting plate, slide bar, and electric actuator, among which, The telescopic shaft is slidably connected to the output end of the regulating motor, and the regulating gear is disposed on the telescopic shaft; A mounting plate is disposed on the periphery of the telescopic shaft, and multiple sliding rods are slidably connected to the mounting plate, and the multiple sliding rods are respectively fixedly connected to the multiple upper control plates; An electric actuator is mounted on the mounting base, and the telescopic end of the electric actuator abuts against the bottom of the mounting plate.

6. The viscoelasticity testing device for polyester films as described in claim 5, characterized in that: It also includes the mounting platform, among which, An installation platform is provided on the assembly base, and the installation platform is a hollow rectangular frame. A first installation platform and a second installation platform are formed on the installation platform. The first installation platform and the second installation platform are distributed in the height direction. The dual-axis motor is provided on the first installation platform, and the control motor is provided on the second installation platform.

7. A method for testing the viscoelasticity of polyester films, characterized in that: By means of claims 1 to 6 The viscoelasticity testing device for any of the following claims is used to perform the following steps: S1. Lay the polyester film in the middle of the mounting base and adjust the four clamping parts to press the four corners of the polyester film. S2. Start the dual-axis motor and drive the two sliding plates to move simultaneously to opposite sides through the two control screws. At this time, the two control screws push multiple pressing parts to slide outward synchronously, and the pressing parts pull the polyester film outward. S3. Adjust multiple clamping components to simultaneously detach from the polyester film, and use an infrared rangefinder to test the deformation of the polyester film within a certain time to complete the detection and processing of the viscoelasticity of the polyester film.

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