Automatic stretching detection device for PET (Polyethylene Terephthalate) film

Abstract

The utility model discloses an automatic stretching detection device for a PET (Polyethylene Terephthalate) film. The left and right tension sensors are symmetrically arranged on the left and right sides of the top of the rack at intervals; the left end and the right end of the guide roller are arranged on the left tension sensor and the right tension sensor; the left front sliding rail and the right front sliding rail are symmetrically arranged on the front sliding rail mounting surface of the rack at intervals, and a left front sliding block and a right front sliding block are slidably arranged on the left front sliding rail and the right front sliding rail; the left rear slide rail and the right rear slide rail are symmetrically arranged on the rear slide rail mounting surface of the rack at intervals; a left rear slide block and a right rear slide block are arranged on the left rear slide rail and the right rear slide rail in a sliding manner; the left end and the right end of the front clamping strip are fixedly arranged on the left front sliding block and the right front sliding block, and the left end and the right end of the rear clamping strip are arranged on the left rear sliding block and the right rear sliding block; the adjustable counterweight block is mounted on the left rear sliding block and / or the right rear sliding block; the driving mechanism is arranged on the rack; and the PLC is respectively connected with the left tension sensor, the right tension sensor and the driving mechanism. The PET film stretching device is simple in structure and capable of stretching a PET film for multiple times.

Description

TECHNICAL FIELD

[0001] The utility model relates to PET film detection equipment technical field especially relates to a PET film automatic tensile testing device. BACKGROUND

[0002] When PET film is used as the insulating material or support material of flexible circuit board, the detection of its tensile resistance is crucial. This is mainly evaluated through tensile strength test, that is, measuring the deformation of PET film under the action of repeated tensile force to ensure that its deformation size meets the requirements in use.

[0003] For example, the PE protective film tensile resistance automatic detection device disclosed by Chinese invention patent CN118857974B, the PE film stretching device disclosed by Chinese utility model patent CN219495925U, the tensile-resistant PE film detection device disclosed by Chinese utility model patent CN219391561U, the tensile-resistant PE film detection device disclosed by Chinese utility model patent CN214472314U, and the PE film stretching device disclosed by Chinese utility model patent CN210047061U.

[0004] However, the above technical solutions have complex structures and high manufacturing costs, and cannot well control the tensile parameters such as tensile force, tensile length, tensile frequency and tensile speed.

[0005] Therefore, the applicant has found a method to solve the above problems through beneficial exploration and research, and the technical solution to be introduced below is generated in this background. CONTENT OF THE UTILITY MODEL

[0006] The technical problem to be solved by the utility model lies in providing a PET film automatic tensile testing device with simple structure, low manufacturing cost and convenient tensile parameter control in view of the deficiencies of the prior art.

[0007] The technical problem to be solved by the utility model can be realized by adopting the following technical solution:

[0008] A PET film automatic tensile testing device comprises:

[0009] A rack has symmetrically arranged front slide rail mounting surfaces and rear slide rail mounting surfaces;

[0010] Left and right tensile force sensors are symmetrically and intervaliy arranged on the top left and right sides of the rack and located between the front slide rail mounting surfaces and the rear slide rail mounting surfaces;

[0011] A guide roller has its left and right ends installed on the left and right tensile force sensors through left and right bearing supports;

[0012] left and right front slide rails symmetrically arranged on the front slide rail mounting surface of the rack, left and right front slide blocks slidingly arranged on the left and right front slide rails;

[0013] left and right rear slide rails symmetrically arranged on the rear slide rail mounting surface of the rack, left and right rear slide blocks slidingly arranged on the left and right rear slide rails;

[0014] a front clamping strip and a rear clamping strip, left and right ends of the front clamping strip being fixedly arranged on the left and right front slide blocks for clamping one end of the PET film, left and right ends of the rear clamping strip being arranged on the left and right rear slide blocks for clamping the other end of the PET film;

[0015] an adjustable counterweight, the adjustable counterweight being arranged on the left rear slide block and / or the right rear slide block;

[0016] a driving mechanism arranged on the rack for driving the left and right front slide blocks to synchronously slide along the left and right front slide rails; and

[0017] a PLC controller, the PLC controller being connected with the left and right tension sensors and the driving mechanism respectively.

[0018] In one preferred embodiment of the present application, the rack comprises left and right triangular supports symmetrically arranged and a plurality of connecting cross beams arranged between the left and right triangular supports for fixedly connecting the left and right triangular supports, the left and right front slide rails being arranged on front side inclined beams of the left and right triangular supports, and the left and right rear slide rails being arranged on rear side inclined beams of the left and right triangular supports.

[0019] In one preferred embodiment of the present application, the left and right bearing supports are T-shaped bearing supports.

[0020] In one preferred embodiment of the present application, the adjustable counterweight comprises a counterweight seat and a plurality of counterweight weights of different weights, the counterweight seat being arranged on the left rear slide block or the right rear slide block, and the plurality of counterweight weights being placed on the counterweight seat according to the need of tension detection.

[0021] In one preferred embodiment of the present application, the driving mechanism comprises:

[0022] left upper and lower pulleys and right upper and lower pulleys, the left upper and lower pulley shafts being arranged in upper and lower ends of the left front slide rail, and the right upper and lower pulley shafts being arranged in upper and lower ends of the right front slide rail;

[0023] Left transmission belt and right transmission belt, the left transmission belt is wound on the left upper and lower pulleys and located in the left front slide rail and fixedly connected with the left front slide block, the right transmission belt is wound on the right upper and lower pulleys and located in the right front slide rail and fixedly connected with the right front slide block;

[0024] Linkage shaft, left and right ends of the linkage shaft are connected with the left lower pulley and the right lower pulley.

[0025] Driving motor, the driving motor is connected with the PLC controller on one hand and connected with the left lower pulley or the right lower pulley on the other hand, and is used for driving the left lower pulley or the right lower pulley to rotate.

[0026] In one preferred embodiment of the utility model, the driving motor is a step motor.

[0027] In one preferred embodiment of the utility model, the PLC controller has a touch display control screen, and the touch display control screen is used for displaying a stretching state and / or setting a stretching parameter.

[0028] Due to the adoption of the above technical scheme, the utility model has the advantages of simple structure, relatively low manufacturing cost, and realization of multiple stretching of the PET film. BRIEF DESCRIPTION OF DRAWINGS

[0029] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or the prior art description, and obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can be obtained according to these drawings without creative labor.

[0030] Figure 1 It is the structural schematic diagram of the utility model. DETAILED DESCRIPTION

[0031] In order to make the technical means, creative features, purposes and effects achieved by the utility model easy to understand, the following will further describe the utility model by combining with specific drawings.

[0032] Referring to Figure 1The device is shown in the figure, which is an automatic PET film stretching detection device, comprising a rack 100, left and right tension sensors 200a, 200b, a guide roller 300, left and right front slide rails 400a, 400b, left and right rear slide rails 500a, 500b, a front clamping strip 600a, a rear clamping strip 600b, an adjustable counterweight 700, a driving mechanism 800, and a PLC controller (not shown in the figure).

[0033] The rack 100 has symmetrically arranged front slide rail mounting surfaces 101 and rear slide rail mounting surfaces 102. Specifically, the rack 100 comprises symmetrically arranged left and right triangular supports 110a, 110b and a plurality of connecting crossbeams 120 arranged at intervals between the left and right triangular supports 110a, 110b for fixedly connecting the left and right triangular supports 110a, 110b in a row.

[0034] The left and right tension sensors 200a, 200b are symmetrically and spacedly arranged on the left and right sides of the top of the rack 100, and are located between the front slide rail mounting surfaces 101 and the rear slide rail mounting surfaces 102, i.e. on the top of the left and right triangular supports 110a, 110b. The left and right tension sensors 200a, 200b are also respectively connected with the PLC controller, which can be used to detect the tension of the PET film in the stretching process in real time, and transmit the collected detection signals to the PLC controller for display.

[0035] The left and right ends of the guide roller 300 are mounted on the left and right tension sensors 200a, 200b through left and right bearing supports 310a, 310b. In this embodiment, the left and right bearing supports 310a, 310b are T-shaped bearing supports, and the guide roller 300 rotates without power under the support of the left and right bearing supports 310a, 310b.

[0036] The left and right front slide rails 400a, 400b are symmetrically and spacedly arranged on the front slide rail mounting surfaces 101 of the rack 100, specifically on the front side inclined beams of the left and right triangular supports 110a, 110b. The left and right front slide rails 400a, 400b are slidably configured with left and right front slide blocks 410a, 410b, which can reciprocally slide along the left and right front slide rails 400a, 400b.

[0037] The left and right rear slide rails 500a, 500b are symmetrically and spacedly arranged on the rear slide rail mounting surfaces 102 of the rack 100, specifically on the rear side inclined beams of the left and right triangular supports 110a, 110b. The left and right rear slide rails 500a, 500b are slidably configured with left and right rear slide blocks 510a, 510b, which can reciprocally slide along the left and right rear slide rails 500a, 500b.

[0038] The left and right ends of the front clamping strip 600a are fixedly arranged on the left and right front sliders 410a and 410b by screws or the like, and are used for clamping one end of the PET film.

[0039] The adjustable counterweight 700 is arranged on the right rear slider 510b, and can also be arranged on the left rear slider 510a, or the adjustable counterweights are arranged on the left rear slider 510a and the right rear slider 510b. In the embodiment, the adjustable counterweight 700 comprises a counterweight seat 710 and a plurality of counterweight weights (not shown in the figure) of different weights, the counterweight seat 710 is arranged on the right rear slider 510b, and the plurality of counterweight weights are placed on the counterweight seat 710 according to the need of tension detection.

[0040] The driving mechanism 800 is arranged on the rack 100, and is used for driving the left and right front sliders 410a and 410b to synchronously slide along the left and right front sliding rails 400a and 400b. Specifically, the driving mechanism 800 comprises left upper and lower pulleys (not shown in the figure), right upper and lower pulleys (not shown in the figure), left and right transmission belts 810a and 810b, a linkage shaft 820 and a driving motor 830. The left upper and lower pulley shafts are arranged in the upper and lower ends of the left front sliding rail 400a, and the right upper and lower pulley shafts are arranged in the upper and lower ends of the right front sliding rail 400b. The left transmission belt 810a is wound around the left upper and lower pulleys and located in the left front sliding rail 400a and fixedly connected with the left front slider 410a, and the right transmission belt 810b is wound around the right upper and lower pulleys and located in the right front sliding rail 400b and fixedly connected with the right front slider 410b. The left and right ends of the linkage shaft 820 are connected with the left and right lower pulleys. The driving motor 830 is connected with the PLC controller on one hand, and connected with the left lower pulley on the other hand, and is used for driving the left lower pulley to rotate, and the left lower pulley drives the right lower pulley to rotate through the linkage shaft 820, so that synchronous rotation is realized. Of course, the driving motor 830 can also be connected with the right lower pulley, and drives the left lower pulley to synchronously rotate through the linkage shaft 820. In the embodiment, the driving motor 830 preferably adopts a stepping motor, and the stretching length is more accurate.

[0041] The PLC controller has a touch display control screen (not shown in the figure), and the touch display control screen is used for displaying a stretching state and / or setting a stretching parameter, and the stretching parameter comprises a stretching force, a stretching length, a stretching frequency and a stretching speed.

[0042] The working process of the PET film automatic stretching detection device is as follows:

[0043] 1. First, the middle part of the PET film to be detected is placed on the guide roller 300, and one end of the PET film is clamped by the front clamping strip 600a, and the other end of the PET film is clamped by the rear clamping strip 600b;

[0044] 2. According to the tensile detection requirements, the weight of the adjustable counterweight 700 is adjusted, so that the PET film is tensioned, thereby setting the tensile force;

[0045] 3. The parameters such as the stretching length, the stretching times and the stretching speed are set through the touch display control screen of the PLC controller;

[0046] 4. The PLC controller controls the driving motor 830 to rotate according to the set parameters, the driving motor 830 drives the left lower pulley to rotate, the left lower pulley drives the right lower pulley to rotate synchronously through the linkage shaft 820, and the left lower pulley and the right lower pulley drive the left transmission belt 810a and the right transmission belt 810b to move synchronously during rotation, thereby driving the left and right front sliders 410a and 410b to slide along the left and right front slide rails 400a and 400b, and then driving the PET film to move through the front clamping strip 600a. Due to the tension applied to the PET film by the adjustable counterweight 700, the PET film is moderately stretched during movement;

[0047] 5. When the set stretching times are reached, the driving motor 830 stops rotating, at this time, the PET film is removed, the deformation degree of the PET film is measured, and whether the PET film meets the tensile detection requirements is judged.

[0048] The basic principles and main features of the present application and the advantages of the present application are shown and described above. It should be understood by those skilled in the art that the present application is not limited by the above embodiments, and the above embodiments and descriptions in the specification are only to illustrate the principles of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. A PET film automatic tensile detection device, characterized in that, The machine frame comprises: a machine frame having symmetrically arranged front and rear slide rail mounting surfaces; left and right tension sensors symmetrically and spacedly arranged on the top left and right sides of the machine frame between the front and rear slide rail mounting surfaces; left and right guide rollers having left and right ends mounted on the left and right tension sensors through left and right bearing supports; left and right front slide rails symmetrically and spacedly arranged on the front slide rail mounting surface of the machine frame, on which left and right front sliding blocks are slidingly arranged; left and right rear slide rails symmetrically and spacedly arranged on the rear slide rail mounting surface of the machine frame, on which left and right rear sliding blocks are slidingly arranged; front and rear clamping strips, left and right ends of the front clamping strips being fixedly arranged on the left and right front sliding blocks for clamping one end of the PET film, left and right ends of the rear clamping strips being arranged on the left and right rear sliding blocks for clamping the other end of the PET film; adjustable counterweights mounted on the left and / or right rear sliding blocks; a driving mechanism arranged on the machine frame for driving the left and right front sliding blocks to synchronously slide along the left and right front slide rails; and a PLC controller connected with the left and right tension sensors and the driving mechanism. The machine frame comprises left and right triangular supports symmetrically arranged and a plurality of connecting cross beams for fixedly connecting the left and right triangular supports, the left and right front slide rails being arranged on the front side inclined beams of the left and right triangular supports, and the left and right rear slide rails being arranged on the rear side inclined beams of the left and right triangular supports.

2. The PET film automatic tensile detection device of claim 1, wherein, The left and right bearing supports are T-shaped bearing supports.

3. The PET film automatic tensile detection device of claim 1, wherein, The adjustable counterweights comprise a counterweight seat arranged on the left or right rear sliding block and a plurality of counterweight weights of different weights, the counterweight weights being placed on the counterweight seat according to the need of tension detection.

4. The PET film automatic tensile detection device of claim 1, wherein, The driving mechanism comprises:

5. The PET film automatic tensile detection device according to any one of claims 1 to 4, characterized in that, left and right upper and lower pulleys, the left upper and lower pulleys being arranged on the upper and lower ends of the left front slide rail, and the right upper and lower pulleys being arranged on the upper and lower ends of the right front slide rail; left and right transmission belts, the left transmission belt being wrapped around the left upper and lower pulleys and located in the left front slide rail and fixedly connected with the left front sliding block, and the right transmission belt being wrapped around the right upper and lower pulleys and located in the right front slide rail and fixedly connected with the right front sliding block; a linkage shaft having left and right ends connected with the left and right lower pulleys; and a driving motor connected with the PLC controller on one hand and with the left or right lower pulley on the other hand for driving the left or right lower pulley to rotate. The driving motor is a stepping motor.

6. The PET film automatic tensile detection device of claim 5, wherein, The PLC controller has a touch display control screen for displaying the stretching state and / or setting the stretching parameters.

7. The PET film automatic tensile detection device of claim 5, wherein, ​

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