A release film peeling force testing device

Abstract

The present invention relates to the technical field of physical analysis of release films, and in particular to a release film peeling force detection device, comprising a single-column tensile testing machine, an upper clamp and a lower clamp installed on the single-column tensile testing machine, and a steel plate for bonding the release film, wherein a first extension plate and a second extension plate are fixedly installed at both ends of the steel plate, respectively, and the first extension plate and the second extension plate respectively have a first chamber and a second chamber, a connecting column is fixedly installed in the first chamber, a first plate is rotatably installed on the top of the connecting column, a transmission member is slidably installed in the second chamber along the length direction of the steel plate, a sliding column is slidably installed on the top of the transmission member along the width direction of the steel plate, and a second plate is rotatably installed on the top of the sliding column; after the two ends of the release film are respectively bonded to the first plate and the second plate, it is only necessary to drive the baffle away from the first plate, the first plate and the second plate will rotate, and the second plate will move at the same time, which will automatically drive the release film parallel to the length direction of the steel plate.

Description

Technical Field

[0001] The invention relates to the technical field of physical analysis of release films, and in particular to a release force detection device for release films. Background Art

[0002] Release films are widely used in many fields such as electronics, medical, aerospace, etc., and are essential to ensure product quality. Among them, the 90-degree peel test of release films is a key method to evaluate their peeling performance. In this test, the sample is firmly fixed on a specific test device (single-column tensile tester), and then force is applied in the vertical direction. By accurately measuring the applied force and the peeling speed of the material, we can obtain important information about the adhesion strength.

[0003] The test process is as follows: Step 1, preparation: prepare the release film sample and steel plate, and ensure that the surface of the steel plate is smooth and free of impurities; Step 2, release film bonding: use a roller to evenly adhere the release film to the surface of the steel plate, and ensure that it is tightly bonded without bubbles or wrinkles; Step 3, stable adhesion: let it stand for a period of time to make the adhesion between the release film and the steel plate fully stable; Step 4, test sample preparation: install the 90° peeling fixture on the single-column tensile testing machine, and place the release film sample fixed on the steel plate on the clamping device under the fixture to ensure that the sample is aligned with the fixture; Step 5, sample fixation: use the upper fixture to fix the other end of the sample to ensure that it is firmly fixed. Set; Step 6, test condition setting: set the test type to peeling, set the test temperature to room temperature, and set the test speed to 50mm / min; Step 7, start the test: start the single-column tensile testing machine, start the peeling test, record the tensile data during the test in real time, and pay attention to the peeling between the release film and the steel plate; Step 8, end the test: after the test is completed, stop the tensile testing machine; remove the release film and steel plate, and check the status of the peeled part; Step 9, data analysis: analyze the tensile data obtained from the test, record key data points, and if necessary, perform further data processing and result interpretation;

[0004] When the staff adhered the release film to the surface of the steel plate, it was basically impossible to ensure that the release film was exactly parallel to the length direction of the steel plate, resulting in the upper clamp clamping the bottom of the release film and peeling it vertically upward. Figure 2 As shown in the figure, the length of the horizontal line formed by the peeling of the release film on the steel plate is greater than the theoretical horizontal line formed when the release film is parallel to the length direction of the steel plate, that is, the width of the release film. Therefore, it will cause errors in the detection. This error increases with the degree of skewness of the release film applied by the staff.

[0005] The above information disclosed in this Background section is only for enhancement of understanding of the background of the present disclosure and therefore it may contain information that does not constitute the prior art that is already known to one of ordinary skill in the art. Summary of the invention

[0006] The purpose of the present invention is to design a device that can ensure that the release film is parallel to the length direction of the steel plate when the release film is bonded to the steel plate, eliminate the detection error caused by the skew of the release film bonded to the steel plate, so as to solve the above-mentioned shortcomings in the technology.

[0007] In order to achieve the above-mentioned purpose, the present invention provides the following technical solutions: a release film peeling force detection device, comprising a single-column tensile testing machine, an upper clamp and a lower clamp installed on the single-column tensile testing machine, and a steel plate for bonding the release film, wherein a first extension plate and a second extension plate are fixedly installed at both ends of the steel plate, respectively, and the first extension plate and the second extension plate respectively have a first chamber and a second chamber, a connecting column is fixedly installed in the first chamber, and a first plate is rotatably installed on the top of the connecting column, a transmission member is slidably installed in the second chamber along the length direction of the steel plate, a sliding column is slidably installed on the top of the transmission member along the width direction of the steel plate, and a second plate is rotatably installed on the top of the sliding column;

[0008] The two ends of the release film are respectively bonded to the top surfaces of the first plate and the second plate. When they are not parallel to the length direction of the steel plate, pulling the transmission member away from the first plate will drive the first plate and the second plate to rotate. At the same time, the second plate moves along the width direction of the steel plate, so that the release film is parallel to the length direction of the steel plate.

[0009] Preferably, the top surface of the first plate and the top surface of the steel plate are in the same plane, and the top surface of the second plate is higher than the top surface of the first plate; in this way, the release film forms an inclined surface, and a roller can be used to roll the release film from the lower end to the higher end, thereby gradually pressing and bonding the release film to the steel plate, thereby preventing the generation of wrinkles and bubbles.

[0010] Preferably, the first plate does not collide with the first extension plate when rotating in the first chamber, to prevent the release film from colliding with the first extension plate before it moves to be parallel to the length direction of the steel plate, resulting in the release film ultimately being unable to be parallel to the length direction of the steel plate.

[0011] Preferably, the transmission member includes a first slide groove on the second extension plate, a slide rod slidably connected in the first slide groove, and baffles fixedly installed at both ends of the slide rod, and the slide rod is slidably connected in the axial direction of the slide rod; the user can drive the slide rod to move along the length of the steel plate in the first slide groove by holding the baffle.

[0012] Preferably, the bottom of the steel plate, the first extension plate and the second extension plate are fixedly mounted with ribs, a second slide groove is opened on the ribs, a hand piece is slidably connected in the second slide groove, and a roller is rotatably mounted in the hand piece; the user can drive the roller to roll on the release film through the hand piece, thereby gradually bonding the release film to the steel plate.

[0013] Preferably, a first torsion spring is installed between the first plate and the connecting column, and a second torsion spring is installed between the second plate and the sliding column; the first torsion spring and the second torsion spring are only used for resetting the first plate and the second plate.

[0014] Preferably, a first spring is installed in the first slide groove, and the end of the first spring is fixedly connected to the slide rod; the first spring can keep the initial state of the slide rod in the first slide groove in the middle of the first slide groove, preventing the slide rod from moving to the end of the first slide groove.

[0015] Preferably, the sliding rod is initially located in the middle of the first sliding groove, and when the release film is completely bonded to the steel plate, the sliding rod does not contact the end of the first sliding groove; this avoids the sliding rod being unable to continue moving along the length direction of the steel plate after contacting the end of the first sliding groove, resulting in the roller being unable to completely bond the release film to the steel plate.

[0016] In the above technical solution, the technical effects and advantages provided by the present invention are:

[0017] After the two ends of the release film are bonded to the first plate and the second plate respectively, the first plate and the second plate will rotate by just driving the baffle away from the first plate. At the same time, the second plate will move, which will automatically drive the release film parallel to the length direction of the steel plate, eliminating the detection error caused by the skew of the release film bonded to the steel plate.

[0018] After the release films on the first plate and the second plate are parallel to the length direction of the steel plate, the roller can be driven to gradually bond the release film to the steel plate from one end, eliminating the problems of wrinkles and bubbles. During the bonding process, the second plate will automatically move toward the first plate, ensuring that the release film is parallel to the length direction of the steel plate and that the roller can completely bond the release film close to the second plate to the steel plate.

[0019] The detection equipment improves the steel plate in the prior art so that the release film is parallel to the length direction of the steel plate when it is bonded to the steel plate, ensuring that when the upper clamp clamps the bottom end of the release film and peels it vertically upward, the horizontal line formed during peeling is equal to the width of the release film, thereby ensuring the accuracy of the detection and simple operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0021] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0022] Figure 2It is a schematic diagram of the release film of the present invention being peeled off the steel plate obliquely;

[0023] Figure 3 It is a schematic diagram of the release film of the present invention being obliquely adhered to a steel plate;

[0024] Figure 4 This is a schematic diagram of the release film of the present invention being parallel to the length direction of the steel plate;

[0025] Figure 5 It is a schematic diagram of bonding the first plate and the second plate to the release film of the present invention;

[0026] Figure 6 A top view of the steel plate of the present invention;

[0027] Figure 7 It is a schematic diagram of the connection between the transmission member and the steel plate of the present invention.

[0028] Description of reference numerals:

[0029] 1. Single-column tensile testing machine; 2. Upper fixture; 3. Lower fixture; 4. Release film; 5. Steel plate; 6. First extension plate; 7. Second extension plate; 8. First chamber; 9. Second chamber; 10. Connecting column; 11. First plate; 12. Transmission member; 12a. First slide groove; 12b. Slide rod; 12c. Baffle; 13. Slide column; 14. Second plate; 15. Rib; 16. Second slide groove; 17. Hand piece; 18. Roller; 19. First torsion spring; 20. Second torsion spring; 21. First spring. DETAILED DESCRIPTION

[0030] In order to enable those skilled in the art to better understand the technical solutions in this application, the technical solutions in the embodiments of this application will be clearly and completely described below. Obviously, the described embodiments are only part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0031] In order to better understand the above technical solution, the above technical solution will be described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0032] Embodiment 1: The present invention provides Figure 1-7The peeling force detection device of a release film shown in the figure comprises a single-column tensile testing machine 1, an upper clamp 2 and a lower clamp 3 installed on the single-column tensile testing machine 1, and a steel plate 5 for bonding a release film 4, wherein the two ends of the steel plate 5 are respectively provided with a first extension plate 6 and a second extension plate 7 fixedly installed, wherein the first extension plate 6 and the second extension plate 7 are respectively provided with a first chamber 8 and a second chamber 9, wherein a connecting column 10 is fixedly installed in the first chamber 8, a first plate 11 is rotatably installed on the top of the connecting column 10, a first torsion spring 19 is installed between the first plate 11 and the connecting column 10, the central axis of rotation of the first plate 11 is perpendicular to the steel plate 5, a transmission member 12 is slidably installed in the second chamber 9 along the length direction of the steel plate 5, and the top of the transmission member 12 The top of the steel plate 5 is slidably connected with a sliding column 13 along the width direction of the steel plate 5, and a second plate 14 is rotatably installed on the top of the sliding column 13. A second torsion spring 20 is installed between the second plate 14 and the sliding column 13. In the initial state, the top surface of the second plate 14 is higher than the top surface height of the first plate 11. When the two ends of the release film 4 are respectively bonded to the top surfaces of the first plate 11 and the second plate 14, the release film 4 does not contact the top surface of the steel plate 5. At the beginning, when the operator sticks the release film 4 on the first plate 11 and the second plate 14, it is difficult for the release film 4 to be completely parallel to the length direction of the steel plate 5. For example, there is a certain angle between the length direction of the release film 4 and the steel plate 5. At this time, the operator moves the transmission member 12 away from the first plate 11. At this time, from a top view, Figure 3 As shown, while ensuring that the release film 4 is not deformed by pulling, the release film 4 will gradually drive the first plate 11 to deflect. When the release film 4 deflects, it will drive the first plate 11 to rotate, and will also drive the second plate 14 to rotate. In order to ensure that after the release film 4 is deflected, the straight line formed by the rotation axis of the first plate 11 as the endpoint is parallel to the length direction of the steel plate 5, the second plate 14 will also drive the sliding column 13 to move along the width direction of the steel plate 5 on the transmission member 12. When the transmission member 12 is pulled to the point where it cannot move, it means that the release film 4 is parallel to the length direction of the steel plate 5, as shown in FIG. Figure 4 As shown;

[0033] The transmission member 12 is mainly composed of a first slide groove 12a on the second extension plate 7, a slide rod 12b slidably connected in the first slide groove 12a, and baffles 12c fixedly installed at both ends of the slide rod 12b. A first spring 21 is installed in the first slide groove 12a, and the end of the first spring 21 is fixedly connected to the slide rod 12b. The operator pinches the two baffles 12c with his thumb and index finger respectively to drag the slide rod 12b to slide in the first slide groove 12a.

[0034] A rib 15 is fixedly installed at the bottom of the steel plate 5, the first extension plate 6 and the second extension plate 7. A second slide groove 16 is opened on the rib 15. A handpiece 17 is slidably connected in the second slide groove 16. A roller 18 is rotatably installed in the handpiece 17. After the release film 4 is parallel to the length direction of the steel plate 5, the user drives the handpiece 17 to make the roller 18 roll toward the second plate 14. After the roller 18 contacts the release film 4, it will gradually press the release film 4 to the top surface of the steel plate 5. Since the height of the release film 4 close to the first plate 11 is lower than the height close to the second plate 14, the release film 4 will gradually adhere from one end of the steel plate 5 to the other end, and adhere to the surface of the steel plate 5 at the same time relative to the overall parallel downward. To prevent bubbles and wrinkles, and when the release film 4 adheres to the surface of the steel plate 5, it will pull the second plate 14 to move toward the first plate 11. At this time, the operator needs to cooperate with the movement by pinching the baffle 12c. Therefore, when designing the first slide groove 12a, if the initial state of the slide bar 12b is in the middle of the first slide groove 12a, it is necessary to ensure that the release film 4 is completely adhered to the surface of the steel plate 5 before the slide bar 12b reaches the end of the first slide groove 12a. Of course, the initial state of the slide bar 12b can also be designed to be at the end of the first slide groove 12a away from the first plate 11. After the release film 4 is completely adhered to the steel plate 5, the release film 4 is removed from the second plate 14 and the first plate 11, leaving only the release film 4 bonded to the steel plate 5;

[0035] After standing for a while to allow the release film 4 and the steel plate 5 to be fully and stably bonded, the operator moves the steel plate 5 to the lower clamp 3, sets the end of the second extension plate 7 to be parallel to the width direction of the steel plate 5, and allows the second extension plate 7 to cooperate with the end of the rib 15 and can be vertically installed on the lower clamp 3. At this time, the upper clamp 2 fixes the ends of the release film 4 originally bonded to the second plate 14 together, and finally starts the single-column tensile machine to gradually peel off the release film 4 from the steel plate 5. At this time, when the release film 4 is peeled off, because the release film 4 is parallel to the length direction of the steel plate 5, unlike the skewed adhesion in the prior art, the line segment of the release film 4 when peeled off from the steel plate 5 will be parallel to the width direction of the steel plate 5, and this line segment will be smaller than the line segment generated when the adhesion is skewed, thereby improving the detection accuracy.

[0036] It is important to note that the construction and arrangement of the present application shown in a number of different exemplary embodiments are exemplary only. Although only a few embodiments are described in detail in this disclosure, it should be readily understood by those who refer to this disclosure that many modifications are possible (e.g., the size, scale, structure, shape and proportion of various elements, and parameter values ​​(e.g., temperature, pressure, etc.), mounting arrangements, use of materials, colors, changes in orientation, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in this application.

Claims

1. A release film peeling force testing device, comprising a single-column tensile testing machine (1), an upper clamp (2) and a lower clamp (3) mounted on the single-column tensile testing machine (1), and a steel plate (5) bonded to a release film (4), characterized in that: The first extension plate (6) and the second extension plate (7) are fixedly installed at both ends of the steel plate (5), and the first extension plate (6) and the second extension plate (7) have a first chamber (8) and a second chamber (9) respectively. A connecting column (10) is fixedly installed in the first chamber (8), and a first plate (11) is rotatably installed on the top of the connecting column (10). A first torsion spring (19) is installed between the first plate (11) and the connecting column (10). The central axis of rotation of the first plate (11) is perpendicular to the steel plate (5). When the first plate (11) rotates in the first chamber (8), it does not collide with the first extension plate (6). A transmission member (12) is slidably installed in the second chamber (9) along the length direction of the steel plate (5), and a sliding column (13) is slidably installed on the top of the transmission member (12) along the width direction of the steel plate (5). The second plate (14) is rotatably installed on the top of the sliding column (13); The two ends of the release film (4) are respectively bonded to the top surfaces of the first plate (11) and the second plate (14), and when they are not parallel to the length direction of the steel plate (5), pulling the transmission member (12) away from the first plate (11) will drive the first plate (11) and the second plate (14) to rotate, and at the same time the second plate (14) moves along the width direction of the steel plate (5), so that the release film (4) is parallel to the length direction of the steel plate (5); The transmission member (12) comprises a first sliding groove (12a) on the second extension plate (7), a sliding rod (12b) slidably connected in the first sliding groove (12a), and blocking pieces (12c) fixedly mounted at both ends of the sliding rod (12b), wherein the sliding rod (12b) is slidably connected in the axial direction of the sliding rod (12b); A first spring (21) is installed in the first sliding groove (12a), and an end of the first spring (21) is fixedly connected to the sliding rod (12b); The sliding rod (12b) is initially located in the middle of the first sliding groove (12a), and when the release film (4) is completely bonded to the steel plate (5), the sliding rod (12b) does not contact the end of the first sliding groove (12a).

2. The release film peeling force detection device according to claim 1, characterized in that: The top surface of the first plate (11) and the top surface of the steel plate (5) are in the same plane, and the top surface of the second plate (14) is higher than the top surface of the first plate (11).

3. The release film peeling force detection device according to claim 1, characterized in that: A rib (15) is fixedly mounted on the bottom of the steel plate (5), the first extension plate (6) and the second extension plate (7), a second slide groove (16) is formed on the rib (15), a hand piece (17) is slidably connected in the second slide groove (16), and a roller (18) is rotatably mounted in the hand piece (17).

4. The release film peeling force detection device according to claim 1, characterized in that: A second torsion spring (20) is installed between the second plate (14) and the sliding column (13).

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