A clamping device for testing the peel strength of release film
By designing a clamping device for the lifting frame and the plate clamping components, and utilizing the V-shaped slots of the positive and negative threaded rods and the longitudinal clamping plates, the problem of mirror scratches on the plate caused by the clamping device was solved, achieving stable clamping and accurate testing.
Patent Information
- Application Number
- CN202522247295.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-10-24
- Publication Date
- 2026-11-06
- Estimated Expiration
- 2035-10-24
AI Technical Summary
In existing technologies, during release film peel strength tests, the clamping device can easily cause the mirror surface of the board to loosen, resulting in scratches.
A clamping device was designed, comprising a lifting frame, a support base, and a plate clamping component. It utilizes the V-shaped clamping slots of the positive and negative threaded rods and the longitudinal clamping plate, combined with a lifting motor and a tightening knob, to achieve stable clamping and prevent loosening.
It effectively prevents the mirror surface of the sheet material from being scratched, ensures clamping stability, and improves testing accuracy.
Smart Images
Figure CN224945861U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of a clamping device for testing the peel strength of release films. Background Technology
[0002] Peel strength refers to the maximum force required to peel a unit width of bonded materials from their contact surface. It reflects the adhesive strength of the materials, such as the bond between safety film and glass, and screen protectors for mobile phones. In the production process of release film, a peel strength test is usually performed on the release film bonded to a film plate to determine its adhesive strength. During the test, the release film is typically cut into strips, then bonded to the film plate. Rollers are used to compact the surface of the release film, forming a film plate with the release film bonded. The film plate is then fixed, and one end of the release film is secured using a clamping head connected to a tension gauge. A screw drive mechanism then pulls the release film, causing it to peel off the film plate. The tensile force required to just peel the release film from the film plate is the peel strength of that release film.
[0003] However, current methods of peeling often involve clamping the mirror surface of the board with a fixture. If the clamping is unstable and the surface becomes loose, the mirror surface of the board may be scratched. Utility Model Content
[0004] To address the shortcomings of existing technologies, this invention provides a clamping device for testing the peel strength of release films, thus solving the problems mentioned in the background.
[0005] This utility model provides the following technical solution: a clamping device for testing the peel strength of release film, including a peel force tester. The peel force tester includes: a lifting frame and a support base. The upper surface of the support base is provided with a plate clamping component. The plate clamping component includes: a clamping support base, a transverse clamping pad, and a longitudinal support. A positive and negative threaded rod is installed inside the longitudinal support. A longitudinal clamping plate is installed on the outer side of the positive and negative threaded rod above the longitudinal support. A V-shaped clamping groove is opened on one side of the longitudinal clamping plate. A tension knob is installed on one end of the positive and negative threaded rod on the outer side of the longitudinal support.
[0006] As a further improvement of this utility model: a pushing rod is provided through one end of the transverse clamping pad through the clamping support base, and a notch is provided on one side of the lower end of the transverse clamping pad corresponding to the position of the longitudinal clamping plate.
[0007] As a further improvement of this utility model: a release film clamping seat is installed on the outer side of the lifting frame corresponding to the position of the plate clamping component, and a lifting motor is installed on the upper end of the lifting frame.
[0008] As a further embodiment of this utility model: the lower end of the longitudinal clamping plate is provided with an engaging slider located outside the positive and negative threaded rods, and a flexible pad is installed on the side surface of the transverse clamping pad.
[0009] As a further improvement of this utility model: the longitudinal clamping plate is an L-shaped structural component, and a limiting groove is provided inside the longitudinal support on the outside of the positive and negative threaded rods.
[0010] As a further improvement of this utility model, the pushing rod is engaged and movably connected with the clamping support base.
[0011] As a further improvement of this utility model, the release film holder is slidably connected to the lifting frame.
[0012] Compared with the prior art, the beneficial effects of this utility model are: The two longitudinal clamping plates are driven to move above the positive and negative threaded rods, thereby locking the V-shaped clamping slots inside the two longitudinal clamping plates into the side position of the plate. This increases the clamping of the plate and prevents the plate from being loosened and scratched. Attached Figure Description
[0013] Figure 1 This is a schematic diagram of a clamping device for testing the peel strength of a release film. Figure 2 This is a schematic diagram of the sheet clamping component in a clamping device for testing the peel strength of a release film. Figure 3 This is an enlarged schematic diagram of the sheet clamping component in a clamping device for testing the peel strength of a release film; Figure 4 This is a top view of a sheet clamping component in a clamping device for testing the peel strength of a release film; Figure 5 This is a front view of a peel force tester in a clamping device for testing the peel strength of a release film.
[0014] In the diagram: 1. Peel force tester; 2. Lifting stand; 3. Support base; 4. Release film clamping seat; 5. Lifting motor; 6. Sheet clamping component; 601. Clamping support base; 602. Transverse clamping pad; 603. Pushing rod; 604. Longitudinal bracket; 605. Tightening knob; 606. Positive and negative threaded rod; 607. Longitudinal clamping plate; 608. V-shaped clamping slot. Detailed Implementation
[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0016] like Figure 1-5 As shown, this embodiment provides a clamping device for testing the peel strength of release film, including a peel force tester 1. The peel force tester 1 includes: a lifting frame 2 and a support base 3. A sheet clamping component 6 is provided on the upper surface of the support base 3. The sheet clamping component 6 includes: a clamping support base 601, a transverse clamping pad 602, and a longitudinal support 604. A flexible pad is installed on the side surface of the transverse clamping pad 602. A positive and negative threaded rod 606 is installed inside the longitudinal support 604. A limiting groove is formed inside the longitudinal support 604 on the outside of the positive and negative threaded rod 606. A longitudinal clamping plate 607 is installed on the outside of the positive and negative threaded rod 606 above the longitudinal support 604. The longitudinal clamping plate 607 is an L-shaped structural component. The lower end of the longitudinal clamping plate 607 is located on the outside of the positive and negative threaded rod 606. The plate is equipped with a sliding block. By controlling the rotation of the positive and negative threaded rods 606, the two longitudinal clamping plates 607 can be controlled to move closer or further apart synchronously, thus applying pressure to fix the end of the plate. A V-shaped clamping groove 608 is provided on one side of the longitudinal clamping plate 607. A tension knob 605 is installed on one end of the positive and negative threaded rods 606 located on the outside of the longitudinal support 604. A push rod 603 is provided on one side of the transverse clamping pad 602, which passes through the clamping support base 601. The push rod 603 is engaged and movably connected with the clamping support base 601. A notch is provided on one side of the lower end of the transverse clamping pad 602, corresponding to the position of the longitudinal clamping plate 607. After the two transverse clamping pads 602 come into contact with each other, the inner diameter of the notch will be larger than the outer diameter of the longitudinal clamping plate 607, so that the longitudinal clamping plate 607 can pass through.
[0017] like Figure 2-3 As shown, in this embodiment, a release film clamping seat 4 is installed on the outer side of the lifting frame 2 at the position corresponding to the plate clamping component 6. The release film clamping seat 4 is slidably connected to the lifting frame 2. A lifting motor 5 is installed at the upper end of the lifting frame 2. The lifting motor 5 drives the release film clamping seat 4 to move up and down on the outer side of the lifting frame 2, thereby controlling the distance between the release film clamping seat 4 and the plate clamping component 6, and thus controlling the stretching of the release film by the release film clamping seat 4.
[0018] The working principle of this utility model is as follows: During use, after the release film is adhered to the board, the lower end of the board is placed above the clamping support base 601. A torque is applied to the push rod 603, controlling the two transverse clamping pads 602 to clamp the lower end of the board. Then, a torque is applied to the tightening knob 605, causing the positive and negative threaded rods 606 inside the longitudinal support 604 to engage and rotate. This moves the two longitudinal clamping plates 607 above the threaded rods 606, thus securing the V-shaped clamping slots 608 inside the two longitudinal clamping plates 607 to the side of the board. This increases the clamping force on the board, preventing loosening and scratches to the surface. The release film clamping seat 4 is then clamped at the end of the release film. The lifting motor 5 drives the release film clamping seat 4 to move upwards inside the lifting frame 2 to perform a release film peeling test.
[0019] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.
[0020] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A clamping device for testing the peel strength of release film, comprising a peel force tester (1), characterized in that, The peel force tester (1) includes: a lifting frame (2) and a support base (3). The upper surface of the support base (3) is provided with a plate clamping component (6). The plate clamping component (6) includes: a clamping support base (601), a transverse clamping pad (602), and a longitudinal bracket (604). The longitudinal bracket (604) is equipped with a positive and negative threaded rod (606). The outer side of the positive and negative threaded rod (606) is equipped with a longitudinal clamping plate (607) above the longitudinal bracket (604). A V-shaped clamping groove (608) is opened on one side of the longitudinal clamping plate (607). A tension knob (605) is installed on one end of the positive and negative threaded rod (606) outside the longitudinal bracket (604).
2. The clamping device for testing the peel strength of release film according to claim 1, characterized in that, A push rod (603) is provided on one side of the transverse clamping pad (602) through the clamping support base (601), and a notch is provided on one side of the lower end of the transverse clamping pad (602) corresponding to the position of the longitudinal clamping plate (607).
3. The clamping device for testing the peel strength of release film according to claim 1, characterized in that, A release film clamping seat (4) is installed on the outer side of the lifting frame (2) corresponding to the position of the plate clamping component (6), and a lifting motor (5) is installed on the upper end of the lifting frame (2).
4. The clamping device for testing the peel strength of release film according to claim 1, characterized in that, The lower end of the longitudinal clamping plate (607) is provided with an engaging slider on the outside of the positive and negative threaded rod (606), and a flexible pad is installed on the side surface of the transverse clamping pad (602).
5. The clamping device for testing the peel strength of release film according to claim 1, characterized in that, The longitudinal clamp (607) is an L-shaped structural component, and the interior of the longitudinal support (604) is provided with a limiting groove on the outside of the positive and negative threaded rod (606).
6. The clamping device for testing the peel strength of release film according to claim 2, characterized in that, The push rod (603) is engaged and movably connected with the clamping support base (601).
7. The clamping device for testing the peel strength of release film according to claim 3, characterized in that, The release film holder (4) is slidably connected to the lifting stand (2).