High-uniformity two-way stretching equipment for preparing base film of car window film

By designing a highly uniform biaxial stretching device for preparing automotive window film base film, full-area scanning and thickness detection of automotive window film were achieved, solving the problems of incomplete coverage, low efficiency, and insufficient accuracy in traditional detection methods, and ensuring the comprehensiveness and accuracy of the detection.

CN223671836UActive Publication Date: 2025-12-16GUANGDONG XINRUI NEW MATERIALS CO LTD
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Patent Information

Application Number
CN202522342498.6
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-11-05
Publication Date
2025-12-16
Estimated Expiration
2035-11-05

AI Technical Summary

Technical Problem

Traditional methods for inspecting automotive window film suffer from incomplete coverage of the inspection area, low inspection efficiency, and insufficient inspection accuracy.

Method used

A high-uniformity biaxial stretching device for preparing automotive window film base film is adopted, which includes a stretching shell, transverse and longitudinal telescopic frames, guide rods, window film thickness detection components, etc., to achieve full-area scanning and thickness detection of automotive window film, ensuring comprehensive coverage and accuracy of the detection path.

Benefits of technology

Complete a comprehensive test of the window film thickness in a short time to avoid omissions and ensure the comprehensiveness and accuracy of the test results.

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Patent Text Reader

Abstract

The utility model discloses high-uniformity two-way stretching equipment for preparing a car window film base film, relates to the technical field of car window film stretching, and aims to solve the problem that a car window film detection area is not fully covered in a traditional detection mode. The high-uniformity two-way stretching equipment comprises a stretching shell, and symmetrical transverse telescopic frames are arranged in the stretching shell; the two extension frames are both arranged in the stretching shell, and the extension frames are located below the transverse telescopic frame; the plurality of symmetrical guide rods are arranged in the stretching shell; and a window film thickness detection assembly. The high-uniformity two-way stretching equipment for preparing the base film of the car window film, disclosed by the utility model, has the advantages that the stretched car window film is subjected to full-area scanning, the thickness of the car window film can be detected in a short time, meanwhile, the edge and the effective area of the car window film can be accurately positioned, the detection path of thickness detection is ensured to completely cover the car window film, and the detection efficiency is improved. Missing detection is avoided, and the comprehensiveness and the accuracy of a detection result are guaranteed.
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Description

TECHNICAL FIELD

[0001] The utility model relates to a car window film stretching technical field especially relates to a high uniformity biaxial stretching equipment for car window film base film preparation. BACKGROUND

[0002] The car window film is blocked ultraviolet, blocks part heat and prevents the injury of glass splashing, prevents the glare etc.

[0003] The traditional detection mode has the problems of incomplete coverage of the car window film detection area, easy local missed detection, long detection time, low efficiency, and difficult to meet the high quality production requirements of detection accuracy. UTILITY MODEL CONTENTS

[0004] The utility model discloses a high uniformity biaxial stretching equipment for car window film base film preparation, aims at solving the missed detection problem of incomplete coverage of the car window film detection area in the traditional detection mode, and the technical problems of low detection efficiency and insufficient detection accuracy.

[0005] In order to realize the above-mentioned purpose, the utility model adopts the following technical scheme: a high uniformity biaxial stretching equipment for car window film base film preparation, comprising: a stretching shell, the inside of the stretching shell is provided with symmetrical horizontal telescopic frame, two extension frames are arranged in the inside of the stretching shell, and the extension frame is located below the horizontal telescopic frame, a plurality of symmetrical guide rods are arranged in the inside of the stretching shell, a window film thickness detection assembly is arranged in the inside of the stretching shell, the window film thickness detection assembly is located below the extension frame, and the window film thickness detection assembly is used for detecting the thickness of the surface of the stretched car window film.

[0006] In a preferred scheme, the window film thickness detection assembly comprises: two straight rails, the two ends of the straight rail are fixedly connected to the inner walls of the stretching shell on both sides, two straight sliding seats are slidably connected above the straight rail, a thickness detector is located above the straight rail, and the thickness detector is located below the extension frame, and the thickness detector is used for detecting the thickness of the stretched car window film.

[0007] In a preferred scheme, the window film thickness detection assembly further comprises: two positioning sensors, which are located at the two ends of the thickness detector, an electric telescopic rod is located below the thickness detector, the bottom end of the electric telescopic rod is fixedly connected to the top end of one of the straight sliding seats, and an extension rod is located below the thickness detector, and the bottom end of the extension rod is fixedly connected to the top end of the straight sliding seat away from the electric telescopic rod.

[0008] In a preferred scheme, the top end of the extension rod and the electric telescopic rod are fixedly connected with a connecting frame, the inner side of the connecting frame is fixedly connected to the outer side of the thickness detector, the top end of the connecting frame is fixedly connected to the bottom end of the positioning sensor, and the top end of the linear sliding seat close to the extension rod is fixedly connected with a tension spring, the tension spring is located on the outer side of the extension rod, and the top end of the tension spring is fixedly connected to the bottom end of the connecting frame.

[0009] In a preferred scheme, the two lateral inner walls of the stretching shell are fixedly connected with lateral ring frames, the inner sides of the lateral ring frames are fixedly connected with lateral bidirectional motors, the two end power output shafts of the lateral bidirectional motors are connected with rotating screws through couplings, and the opposite ends of the rotating screws are movably connected to the inner walls of the stretching shell.

[0010] In a preferred scheme, the two lateral inner walls of the stretching shell are fixedly connected with lateral ring frames, the inner sides of the lateral ring frames are fixedly connected with lateral bidirectional motors, the two end power output shafts of the lateral bidirectional motors are connected with rotating screws through couplings, and the opposite ends of the rotating screws are movably connected to the inner walls of the stretching shell.

[0011] In a preferred scheme, the two lateral inner walls of the stretching shell are fixedly connected with lateral ring frames, the inner sides of the lateral ring frames are fixedly connected with lateral bidirectional motors, the two end power output shafts of the lateral bidirectional motors are connected with rotating screws through couplings, and the opposite ends of the rotating screws are movably connected to the inner walls of the stretching shell.

[0012] As can be seen from the above, the high-uniformity bidirectional stretching equipment for preparing a car window film base film has the technical effects that the car window film after stretching is subjected to full-area scanning, the thickness of the car window film can be detected in a short time, the edge and the effective area of the car window film can be accurately positioned, the detection path of the thickness detection completely covers the car window film, the technical effects of avoiding missed detection and guaranteeing the comprehensiveness and accuracy of the detection result are achieved. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 The utility model provides a kind of high-uniformity bidirectional stretching equipment for preparing car window film base film of the overall structure schematic diagram of the utility model is shown in the figure;

[0014] Figure 2The utility model provides a kind of high uniformity bidirectional stretching equipment for window film base film preparation of the stretching shell internal structure schematic view of utility model proposes.

[0015] Figure 3 The utility model provides a kind of high uniformity bidirectional stretching equipment for window film base film preparation of the clamping piece partial structure schematic view of utility model proposes.

[0016] Figure 4 The utility model provides a kind of high uniformity bidirectional stretching equipment for window film base film preparation of the window film thickness detection subassembly structure schematic view of utility model proposes.

[0017] Figure 5 The utility model provides a kind of high uniformity bidirectional stretching equipment for window film base film preparation of the window film thickness detection subassembly partial structure schematic view of utility model proposes.

[0018] In the drawing: 1, stretching shell;2, transverse ring frame;3, transverse bidirectional motor;4, rotating screw;5, transverse sliding seat;6, transverse sliding rod;7, transverse telescopic frame;8, longitudinal motor frame;9, longitudinal double-end motor;10, rotating screw;11, longitudinal sliding seat;12, longitudinal sliding rod;13, extension frame;14, guide rod;15, expansion seat;16, window film thickness detection subassembly;1601, linear rail;1602, linear sliding seat;1603, electric telescopic rod;1604, extension rod;1605, stretching spring;1606, connecting frame;1607, positioning sensor;1608, thickness detector;17, clamping piece. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments.

[0020] The high uniformity bidirectional stretching equipment for window film base film preparation disclosed by the utility model is mainly applied to the missed detection problem caused by incomplete coverage of window film detection area in traditional detection mode, and the scene of low detection efficiency and insufficient detection accuracy.

[0021] REFERENCE Figures 1-5 A kind of high uniformity bidirectional stretching equipment for window film base film preparation, comprising: stretching shell 1, the inside of stretching shell 1 is provided with symmetrical transverse telescopic frame 7;Two extension frames 13, are all set to the inside of stretching shell 1, and extension frame 13 is below transverse telescopic frame 7;Multiple symmetrical guide rods 14, are all set to the inside of stretching shell 1;Window film thickness detection subassembly 16 is set to the inside of stretching shell 1, and window film thickness detection subassembly 16 is below extension frame 13, and the window film thickness detection subassembly 16 is used to detect the thickness of the surface of the stretched automobile window film.

[0022] Reference Figure 1 , Figure 2 , Figure 4 and Figure 5 In a preferred embodiment, the window film thickness detection component 16 includes: two linear tracks 1601, both ends of which are fixedly connected to the inner walls of the stretching housing 1; two linear slide blocks 1602, both slidably connected above the linear tracks 1601; and a thickness detector 1608, located above the linear tracks 1601 and below the extension frame 13, for detecting the thickness of the window film after stretching.

[0023] In this solution, the window film thickness detection component 16 further includes: two positioning sensors 1607, both located at the two ends of the thickness detector 1608; an electric telescopic rod 1603, located below the thickness detector 1608, with the bottom end of the electric telescopic rod 1603 fixedly connected to the top end of one of the linear slide blocks 1602; and an extension rod 1604, located below the thickness detector 1608, with the bottom end of the extension rod 1604 fixedly connected to the top end of the linear slide block 1602 away from the electric telescopic rod 1603.

[0024] In this design, the top ends of both the extension rod 1604 and the electric telescopic rod 1603 are fixedly connected to a connecting frame 1606. The inner side of the connecting frame 1606 is fixedly connected to the outer side of the thickness detector 1608. The top ends of the connecting frame 1606 are fixedly connected to the bottom end of the positioning sensor 1607. A tension spring 1605 is fixedly connected to the top end of the linear slide block 1602 near the extension rod 1604. The tension spring 1605 is located on the outer side of the extension rod 1604, and the top end of the tension spring 1605 is fixedly connected to the bottom end of the connecting frame 1606.

[0025] The window film thickness detection component 16 performs a full-area scan on the stretched window film, which can complete the detection of the window film thickness in a short time. At the same time, it can accurately locate the edge and effective area of ​​the window film, ensuring that the detection path of the thickness detection completely covers the window film, avoiding missed detections, and ensuring the comprehensiveness and accuracy of the detection results.

[0026] Reference Figures 1-3In a preferred implementation form, the two lateral inner walls of the stretching shell 1 are fixedly connected with lateral ring frames 2, the inner sides of the lateral ring frames 2 are fixedly connected with lateral bidirectional motors 3, the two end power output shafts of the lateral bidirectional motors 3 are connected with rotating screws 4 through couplings, the opposite ends of the rotating screws 4 are movably connected to the inner walls of the stretching shell 1, wherein the two symmetrical guide rods 14 are located on the upper and lower sides of the lateral bidirectional motors 3, and the guide rods 14 and the outer sides of the rotating screws 4 close to the lateral bidirectional motors 3 are provided with two symmetrical lateral sliding seats 5, and the opposite sides of the symmetrical lateral sliding seats 5 are fixedly connected with lateral sliding rods 6.

[0027] In the scheme, the two longitudinal inner walls of the stretching shell 1 are fixedly connected with longitudinal motor frames 8, the inner sides of the longitudinal motor frames 8 are fixedly connected with longitudinal double-head motors 9, the two end power output shafts of the longitudinal double-head motors 9 are connected with rotating screws 10 through couplings, the opposite ends of the rotating screws 10 are movably connected to the inner walls of the stretching shell 1, wherein the two symmetrical guide rods 14 are located on the upper and lower sides of the longitudinal double-head motors 9, and the guide rods 14 and the outer sides of the rotating screws 10 close to the longitudinal double-head motors 9 are provided with two symmetrical longitudinal sliding seats 11, and the opposite sides of the symmetrical longitudinal sliding seats 11 are fixedly connected with longitudinal sliding rods 12.

[0028] In the scheme, the outer sides of the two lateral sliding rods 6 and the longitudinal sliding rods 12 are staggered and provided with expansion seats 15, the lateral opposite sides of the expansion seats 15 are fixedly connected to the two ends of the lateral telescopic frames 7, and the longitudinal opposite sides of the expansion seats 15 are fixedly connected to the two ends of the extension frames 13, and the opposite sides of the lateral telescopic frames 7 and the extension frames 13 are provided with clamping pieces 17.

[0029] Working principle: when starting the bidirectional stretching program, the transverse bidirectional motor 3 and the longitudinal double-head motor 9 are started synchronously, the power output shaft of the transverse bidirectional motor 3 drives the rotating screw rod 4 to rotate, since the rotating screw rod 4 is threadedly matched with the transverse sliding seat 5, and the guide rod 14 guides the transverse sliding seat 5, the two transverse sliding seats 5 will move in the opposite direction along the guide rod 14, thereby driving the transverse sliding rod 6 to stretch to both sides, the power output shaft of the longitudinal double-head motor 9 drives the rotating screw rod 10 to rotate, and for the same reason, the two longitudinal sliding seats 11 move in the opposite direction along the guide rod 14, thereby driving the longitudinal sliding rod 12 to stretch forward and backward, with the stretching of the transverse sliding rod 6 and the longitudinal sliding rod 12, the expansion seat 15 connected with the sliding rod moves in the direction of four directions, and pulls the transverse telescopic frame 7 and the extension frame 13 to expand synchronously, in the stretching process of the transverse telescopic frame 7 and the extension frame 13, the clamping piece 17 moves stably in the direction of four directions, and finally the car window film is stretched in the transverse and longitudinal directions, so that the area is expanded, and the structure design of the transverse telescopic frame 7 and the extension frame 13 can ensure that the car window film is evenly stressed, so as to avoid local overstretching, after stretching, the window film thickness detection assembly 16 is started, and thickness uniformity detection is performed, the linear sliding seat 1602 of the thickness detection assembly moves along the linear rail 1601, thereby driving the entire detection mechanism to make reciprocating scanning motion below the stretched car window film, during the detection process, the two positioning sensors 1607 are located at the two ends of the thickness detector 1608 respectively, and the edge position of the car window film is positioned first, so that the detection path covers the entire car window film area, during the movement of the thickness detector 1608, the thickness of the car window film is continuously detected, wherein the electric telescopic rod 1603 can adjust the height of the thickness detector 1608, the extension rod 1604 cooperates with the stretching spring 1605 to ensure that the thickness detector 1608 and the surface of the car window film always maintain a stable detection distance, and the connecting frame 1606 fixes the structure of the thickness detector 1608 and the positioning sensor 1607, finally, the thickness detector 1608 feeds back the collected thickness data to the control system, and judges whether the thickness of the stretched car window film is uniform.

[0030] The above is only a preferred specific embodiment of the present application, but the protection scope of the present application is not limited thereto. The replacement can be a partial structure, device, method step replacement, or a complete technical solution. According to the technical scheme and the utility model concept of the present application, equivalent replacement or change should be covered within the protection scope of the present application.

Claims

1. A high-uniformity two-way stretching apparatus for preparing a base film of a vehicle window film, characterized by, Include: The stretching shell (1), the inside of the stretching shell (1) is provided with symmetrical transverse telescopic frame (7);Two extension frames (13) are arranged in the inside of the stretching shell (1), and the extension frame (13) is located below the transverse telescopic frame (7);A plurality of symmetrical guide rods (14) are arranged in the inside of the stretching shell (1);The window film thickness detection assembly (16) is arranged in the inside of the stretching shell (1), and the window film thickness detection assembly (16) is located below the extension frame (13), and the window film thickness detection assembly (16) is used for detecting the thickness of the surface of the stretched automobile window film.

2. The high-uniformity biaxial stretching apparatus for preparing a base film of a vehicle window film according to claim 1, characterized by, The window film thickness detection assembly (16) includes: two linear rails (1601), the two ends of the linear rail (1601) are fixedly connected to the inner wall of the stretching shell (1) on both sides;Two linear slides (1602) are slidably connected above the linear rail (1601);The thickness detector (1608) is located above the linear rail (1601), and the thickness detector (1608) is located below the extension frame (13), and the thickness detector (1608) is used for detecting the thickness of the stretched car window film.

3. The high-uniformity biaxial stretching apparatus for preparing a base film of a vehicle window film according to claim 2, characterized by, The window film thickness detection assembly (16) further includes: two positioning sensors (1607) are located at both ends of the thickness detector (1608);The electric telescopic rod (1603) is located below the thickness detector (1608), and the bottom end of the electric telescopic rod (1603) is fixedly connected to the top end of one of the linear slides (1602);The extension rod (1604) is located below the thickness detector (1608), and the bottom end of the extension rod (1604) is fixedly connected to the top end of the linear slide (1602) away from the electric telescopic rod (1603).

4. The high-uniformity biaxial stretching apparatus for preparing a base film of a vehicle window film according to claim 3, characterized by, The top end of the extension rod (1604) and the electric telescopic rod (1603) is fixedly connected with the connecting frame (1606), the inner side of the connecting frame (1606) is fixedly connected to the outer side of the thickness detector (1608), the top end of the connecting frame (1606) is fixedly connected to the bottom end of the positioning sensor (1607), and the top end of the connecting frame (1606) is fixedly connected to the bottom end of the positioning sensor (1607), and the top end of the connecting frame (1606) is fixedly connected to the bottom end of the positioning sensor (1607), and the top end of the connecting frame (1606) is fixedly connected to the bottom end of the positioning sensor (1607), and the top end of the connecting frame (1606) is fixedly connected to the bottom end of the positioning sensor (1607), and the top end of the connecting frame (1606) is fixedly connected to the bottom end of the positioning sensor (1607), and the top end of the connecting frame (1606) is fixedly connected to the bottom end of the positioning sensor (1607), and the top end of the connecting frame (1606) is fixedly connected to the bottom end of the positioning sensor (1607), and the top end of the connecting frame (1606) is fixedly connected to the bottom end of the positioning sensor (1607), and the top end of the connecting frame (1606) is fixedly connected to the bottom end of the positioning sensor (1607), and the top end of the connecting frame (1606) is fixedly connected to the bottom end of the positioning sensor (1607), and the top end of the connecting frame (1606) is fixedly connected to the bottom end of the positioning sensor (1607), and the top end of the connecting frame (1606) is fixedly connected to the bottom end of the positioning sensor (1607), and the top end of the connecting frame (1606) is fixedly connected to the bottom end of the positioning sensor (1607), and the top end of the connecting frame (1606) is fixedly connected to the bottom end of the positioning sensor (1607), and the top end of the connecting frame (1606) is fixedly connected to the bottom end of the positioning sensor (1607), and the top end of the connecting frame (1606) is fixedly connected to the bottom end of the positioning sensor (1607), and the top end of the connecting frame (1606) is fixedly connected to the bottom end of the positioning sensor (1607), and the top end of the connecting frame (1606) is fixedly connected to the bottom end of the positioning sensor (1607), and the top end of the connecting frame (1606) is fixedly connected to the bottom end of the positioning sensor (1607), and the top end of the connecting frame (1606) is fixedly connected to the bottom end of the positioning sensor (1607), and the top end of the connecting frame (1606) is fixedly connected to the bottom end of the positioning sensor (1607), and the top end of the connecting frame (1606) is fixedly connected to the bottom end of the positioning sensor (1607), and the top end of the connecting frame (1606) is fixedly connected to the bottom end of the positioning sensor (1607), and the top end of the connecting frame (1606) is fixedly connected to the bottom end of the positioning sensor (1607), and the top end of the connecting frame (1606) is fixedly connected to the bottom end of the positioning sensor (1607), and the top end of the connecting frame (1606) is fixedly connected to the bottom end of the positioning sensor (1607), and the top end of the connecting frame (1606) is fixedly connected to the bottom end of the positioning sensor (1607), and the top end of the connecting frame (1606) is fixedly connected to the bottom end of the positioning sensor (1607), and the top end of the connecting frame (1606) is fixedly connected to the bottom end of the positioning sensor (1607), and the top end of the connecting frame (1606) is fixedly connected to the bottom end of the positioning sensor (1607), and the top end of the connecting frame (1606) is fixedly connected to the bottom end of the positioning sensor (1607), and the top end of the connecting frame (1606) is fixedly connected to the bottom end of the positioning sensor (1607), and the top end of the connecting frame (1606) is fixedly connected to the bottom end of the positioning sensor (1607), and the top end of the connecting frame (1606) is fixedly connected to the bottom end of the positioning sensor (1607), and the top end of the connecting frame (1606) is fixedly connected to the bottom end of the positioning sensor (1607), and the top end of the connecting frame (1606) is fixedly connected to the bottom end of the positioning sensor (1607), and the top end of the connecting frame (1606) is fixedly connected to the bottom end of the positioning sensor (1607), and the top end of the connecting frame (1606) is fixedly connected to the bottom end of the positioning sensor (1607), and the top end of the connecting frame (1606) is fixedly connected to the bottom end of the positioning sensor (1607), and the top end of the connecting frame (1606) is fixedly connected to the bottom end of the positioning sensor (1607), and the top end of the connecting frame (1606) is fixedly connected to the bottom end of the positioning sensor (1607), and the top end of the connecting frame (1606) is fixedly connected to the bottom end of the positioning sensor (1607), and the top end of the connecting frame (1606) is fixedly connected to the bottom end of the positioning sensor (1607), and the top end of the connecting frame (1606) is fixedly connected to the bottom end of the positioning sensor (1607), and the top end of the connecting frame (1606) is fixedly connected to the bottom end of the positioning sensor (1607), and the top end of the connecting frame (1606) is fixedly connected to the bottom end of the positioning sensor (1607), and the top end of the connecting frame (1606) is fixedly connected to the bottom end of the 5. The high-uniformity biaxial stretching apparatus for preparing a base film of a vehicle window film according to claim 1, characterized by, ​ 6. The high-uniformity biaxial stretching apparatus for preparing a base film of a vehicle window film according to claim 5, characterized by The two longitudinal inner walls of the stretching shell (1) are fixedly connected with longitudinal motor frames (8), the inner sides of the longitudinal motor frames (8) are fixedly connected with longitudinal double-head motors (9), the two end power output shafts of the longitudinal double-head motors (9) are connected with rotating screws (10) through couplings, and the opposite ends of the rotating screws (10) are movably connected to the inner wall of the stretching shell (1); wherein the two symmetrical guide rods (14) are located on the upper and lower sides of the longitudinal double-head motor (9), and the guide rods (14) and the rotating screws (10) on the outer sides of the longitudinal double-head motor (9) are provided with two symmetrical longitudinal sliding seats (11); and the opposite sides of the symmetrical longitudinal sliding seats (11) are fixedly connected with longitudinal sliding rods (12).

7. The high-uniformity biaxial stretching apparatus for producing a base film of a vehicle window film according to claim 6, characterized by The opposite sides of the two symmetrical longitudinal sliding seats (11) are fixedly connected with longitudinal sliding rods (12). The opposite sides of the two symmetrical longitudinal sliding seats (11) are fixedly connected with longitudinal sliding rods (12).