A device for testing the peel strength of the surface of a release film

Abstract

The present invention relates to the technical field of peel strength testing, and discloses a testing device for the surface peel strength of a release film, including a peel strength testing machine. A peeling mechanism is used for clamping and pulling the release film. A clamping part is installed on the top of the peel strength testing machine and is used for clamping a test plate. A leveling part is installed on the clamping part and is used for adaptively improving the flatness of the debonding surface of the release film, so as to improve the bonding stability and detection accuracy of the release film. The unique design of the leveling part significantly improves the flatness of the debonding surface of the release film. The adjustment grooves, swing arms, first tension springs and rollers on its two supports cooperate with each other. During the peeling process, the roller always rolls on the unpeeled surface of the release film under the tension of the first tension spring, effectively avoiding problems such as wrinkles, offsets and skews on the bonding surface of the release film, ensuring the flatness when each adhesive point is separated, thereby greatly improving the detection accuracy and making the test results more accurately reflect the peel strength performance of the release film.

Description

Technical Field

[0001] The present invention relates to the technical field of peel strength testing, and specifically to a testing device for the surface peel strength of a release film. Background Art

[0002] In the field of material testing, release films are increasingly widely used, and their surface peel strength is a key performance indicator. With the continuous improvement of product quality and process requirements in industries such as electronics, medical, and food packaging, accurately measuring the peel strength of release films is crucial for ensuring the stability and reliability of the product production process.

[0003] According to Chinese Patent Publication No. CN114858703B, this patent relates to a peel strength testing device, which includes a horizontal driving lead screw module that makes horizontal reciprocating motion driven by a horizontal driving mechanism, and a vertical driving lead screw module that makes vertical up and down motion driven by a vertical driving mechanism; a rotating platform assembly is connected to the horizontal driving lead screw module; a testing assembly is connected to the vertical driving lead screw module. The rotating platform assembly includes a connecting plate connected to the horizontal driving lead screw module, a rotating clamping device connected to the connecting plate for adjusting the peel angle, and a sample placing flat plate connected to the rotating clamping device for placing test samples, realizing the synchronous motion of the test sample in the horizontal and vertical directions, ensuring a constant angle at the peel point during the test, and realizing the peel strength test of the peel angle forming an angle with the motion direction of the horizontal driving lead screw module. The sample placing flat plate is detachable, with high experimental efficiency and low cost.

[0004] However, during the detection of existing peel testing machines, there is a problem that the release film is not firmly adhered to the test plate, resulting in wrinkles and unevenness on the adhesive surface of the release film during peeling, thereby reducing the detection accuracy. At the same time, due to the influence of the pulling force during peeling, the suspended part of the test plate will be offset and unstable under the pulling force, further reducing the detection accuracy. Moreover, when the release film is peeled to the end, it will fall off, and the release film will eject due to its own deformation during the fall, and then re-adhere to the workbench and equipment, causing pollution to the working area. Therefore, a testing device for the surface peel strength of a release film is proposed to solve the above-mentioned problems. Summary of the Invention

[0005] (1) Technical Problems to be Solved

[0006] Aiming at the deficiencies of the prior art, the present invention provides a testing device for the surface peel strength of a release film, which solves the problems of unstable adhesive surface during release film peeling, easy shaking of the adhesive test plate under the influence of pulling force, and ejection and detachment of the end of the release film.

[0007] (2) Technical Solutions

[0008] To achieve the above object, the present invention provides the following technical solution: A device for testing the peel strength of a release film surface, including a peel strength testing machine. The peeling mechanism is used to clamp and pull the release film. The clamping part is installed on the top of the peel strength testing machine and is used to clamp the test plate. The leveling part is installed on the clamping part and is used to adaptively improve the flatness of the debonding surface of the release film. The anti-vibration part is installed on the leveling part and is used to improve the force balance and stability of the suspended part of the test plate. The anti-projectile part is installed on the anti-vibration part and is used to automatically prevent the end of the release film from falling off and ejecting. The glue-removing part is installed on the leveling part and is used to synchronously remove the residual adhesive during the peeling of the release film. The leveling part includes two supports. Adjustment grooves are opened on both of the two supports. The inner walls of the two adjustment grooves are rotatably connected with swing arms. A first tension spring is elastically connected between each swing arm and the inner wall of its own adjustment groove. A roller is rotatably connected between the ends of the two swing arms. The anti-vibration part includes two support arms. The ends of the two support arms are respectively fixedly connected to one side of the two supports close to each other. A pad table is fixedly connected to the other ends of the two support arms. The anti-projectile part includes a vertical frame. The vertical frame is fixedly connected to one side of the pad table. A slide plate is slidably connected to the inner wall of the vertical frame. A second tension spring is elastically connected between the bottom of the slide plate and the bottom of the inner wall of the vertical frame. A dial rod is fixedly connected to the side wall of the slide plate. A pressing arm is arranged on the other side of the slide plate.

[0009] Preferably, the number of the vertical frame, the slide plate, the second tension spring and the dial rod is two each. The other vertical frame, the slide plate, the second tension spring and the dial rod are symmetrically installed on the other side of the pad table. The pressing arm is fixedly connected between the two slide plates. The two dial rods are respectively abutted against the two swing arms.

[0010] Preferably, the peeling mechanism includes a driving groove, a driving arm and a clamp. The driving groove is opened at the rear side of the top of the peel strength testing machine. One end of the driving arm is slidably connected in the driving groove. A motor is installed in the driving groove. The output shaft of the motor is fixedly connected with a screw rod. The driving arm is threadedly sleeved on the screw rod. A tension sensor is installed between the clamp and the driving arm.

[0011] Preferably, the clamping part includes a bottom plate. The bottom plate is fixedly connected to one side of the top of the peel strength testing machine. Bolts are rotatably connected to both sides of the top of the bottom plate. Clamping plates are threadedly sleeved on the two bolts. Two limiting arms are symmetrically connected to the top of the bottom plate. Tooth arms are symmetrically connected to both side faces of the two ends of the bottom plate. An electric push rod is fixedly connected to the middle of the side wall of the bottom plate.

[0012] Preferably, the end of the inner rod of the electric push rod is fixedly connected to the pad table. The two supports are attached to the side wall of the bottom plate.

[0013] Preferably, the anti-slosh part further includes a magnet. One side of the top of the cushion table is of an inclined surface structure. A groove is formed in the top plane of the cushion table. The magnet is installed on the inner wall of the groove. An optoelectronic sensor is installed on the inclined surface of the top of the cushion table, and the optoelectronic sensor is electrically connected to the electric push rod.

[0014] Preferably, the glue removing part includes a U-shaped frame. The two ear ends of the U-shaped frame are respectively fixedly connected to the tops of the two supports. A reciprocating lead screw is rotatably connected between the inner walls of the U-shaped frame. A lead screw slider is threadedly sleeved on the reciprocating lead screw. Two convex pieces are symmetrically connected to the side wall of the lead screw slider. A rotating rod is rotatably connected between the two convex pieces. A scraping plate is fixedly sleeved on the outer wall of the rotating rod. Torsion springs are sleeved on both ends of the rotating rod, and the two torsion springs are respectively elastically connected between the adjacent convex piece and the scraping plate.

[0015] Preferably, rotating shafts movably penetrate through the two ear ends of the U-shaped frame. The two ends of the reciprocating lead screw are fixedly connected between the two rotating shafts. Gaskets are fixedly sleeved on the outer walls of the two rotating shafts. The two gaskets are respectively attached to the outer walls of the two ear ends of the U-shaped frame. Gears are fixedly sleeved on the ends of the two rotating shafts away from each other.

[0016] Preferably, the two gears are respectively meshed with two tooth arms. A test adhesive sheet is clamped between the clamping plate and the bottom plate. A release film body is adhesively bonded to the top of the test adhesive sheet.

[0017] Preferably, the test adhesive sheet movably passes between the two supports and between the two vertical frames. The test adhesive sheet and the magnet attract each other with opposite polarities. The movable end of the release film body bypasses the roller and is clamped on the fixture of the peeling mechanism.

[0018] (III) Beneficial effects

[0019] Compared with the prior art, the present invention provides a release film surface peeling strength testing device, which has the following beneficial effects:

[0020] 1. For this release film surface peeling strength testing device, by improving the bonding stability and detection accuracy of the release film, the unique design of the leveling part significantly improves the flatness of the debonding surface of the release film. The adjustment grooves, swing arms, first tension springs and rollers on the two supports cooperate with each other. During the peeling process, the roller always rolls on the unpeeled surface of the release film under the tension of the first tension spring, effectively avoiding problems such as wrinkles, offsets and skews on the bonding surface of the release film, ensuring the flatness when each adhesive point is separated, thereby greatly improving the detection accuracy and making the test results more accurately reflect the peeling strength performance of the release film.

[0021] 2. The surface peel strength testing equipment for the release film enhances the stability of the test plate. The anti-shaking part ensures the stability of the test plate in multiple aspects. On the one hand, the cushion table is connected to the support through the support arm and moves synchronously with the release process of the release film under the push of the electric push rod, continuously supporting the suspended part of the test plate to prevent it from shaking due to the pulling force. On the other hand, the magnet on the top of the cushion table generates a suction force on the test plate, further stabilizing the test plate and avoiding its up-and-down shaking, greatly improving the stability of the peeling process and reducing the adverse impact of the test plate shaking on the detection accuracy.

[0022] 3. The surface peel strength testing equipment for the release film prevents the end of the release film from ejecting. The anti-ejection part effectively solves the problem of the end ejection of the release film. When the release film is peeled to the end, the rotating roller disengages from the test plate and triggers the photoelectric sensor, and the electric push rod stops moving. At the same time, the lever drives the slide plate to descend under the action of the second tension spring, so that the pressing arm presses the end of the release film to prevent it from falling off and ejecting. This not only avoids the contamination of the equipment and the workbench by the release film, ensures the cleanliness of the working area, but also maintains the integrity of the release film, prevents the detection accuracy from changing instantaneously due to ejection, and guarantees the safety and stability of the testing process.

[0023] 4. The surface peel strength testing equipment for the release film synchronously removes the residual adhesive. The glue removal part realizes the synchronous and efficient treatment of the residual adhesive on the test plate during the peeling process. Components such as the U-shaped frame, reciprocating lead screw, lead screw slider, convex piece, rotating rod, scraping plate and torsion spring cooperate to work. When the support moves, the reciprocating lead screw is driven to rotate through the meshing of the gear and the tooth arm, so that the scraping plate reciprocates along the top surface of the test plate to scrape the residual adhesive. The torsion spring ensures that the scraping plate always adheres tightly to the plate surface, avoiding the generation of gaps while effectively removing the adhesive, keeping the test plate clean, reducing the subsequent maintenance and cleaning burden, and ensuring the continuous normal operation of the testing equipment. Description of the Drawings

[0024] Figure 1 It is a schematic diagram of the overall structure of a surface peel strength testing equipment for a release film proposed by the present invention;

[0025] Figure 2 It is a connection diagram of the release film body, the test adhesive plate and the clamping part of a surface peel strength testing equipment for a release film proposed by the present invention;

[0026] Figure 3 It is a schematic diagram of the clamping part structure of a surface peel strength testing equipment for a release film proposed by the present invention;

[0027] Figure 4 It is a connection diagram of the leveling part, the anti-shaking part, the anti-ejection part and the glue removal part of a surface peel strength testing equipment for a release film proposed by the present invention;

[0028] Figure 5Schematic structural diagram of the leveling part of a release film surface peel strength testing device proposed by the present invention;

[0029] Figure 6 Schematic structural diagram of the anti-shake part and anti-projectile part of a release film surface peel strength testing device proposed by the present invention;

[0030] Figure 7 Schematic structural diagram of the glue removal part of a release film surface peel strength testing device proposed by the present invention.

[0031] In the figure: 1, peel strength testing machine; 2, peeling mechanism; 3, release film body; 4, clamping part; 41, bottom plate; 42, bolt; 43, clamping plate; 44, limiting arm; 45, toothed arm; 46, electric push rod; 5, leveling part; 51, support; 52, adjustment groove; 53, swing arm; 54, first tension spring; 55, rotating roller; 6, anti-shake part; 61, support arm; 62, cushion table; 63, magnet; 64, photoelectric sensor; 7, anti-projectile part; 71, vertical frame; 72, sliding plate; 73, second tension spring; 74, lever; 75, pressing arm; 8, glue removal part; 81, U-shaped frame; 82, reciprocating lead screw; 83, lead screw slider; 84, tab; 85, scraper; 86, torsion spring; 87, rotating shaft; 88, gasket; 89, gear; 9, test adhesive plate. Specific embodiments

[0032] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0033] Please refer to Figure 1-7 , the present invention provides a technical solution: a release film surface peel strength testing device, including a peel strength testing machine 1. The peeling mechanism 2 in this case is used to clamp and pull the release film. The clamping part 4 in this case is installed on the top of the peel strength testing machine 1 and is used to clamp the test plate. The leveling part 5 in this case is installed on the clamping part 4 and is used to adaptively improve the flatness of the debonding surface of the release film. The anti-shake part 6 in this case is installed on the leveling part 5 and is used to improve the force balance and stability of the suspended part of the test plate. The anti-projectile part 7 in this case is installed on the anti-shake part 6 and is used to automatically prevent the end of the release film from falling and ejecting. The glue removal part 8 in this case is installed on the leveling part 5 and is used to synchronously remove the residual glue during the peeling of the release film.

[0034] In the present invention, in order to avoid the problem of uneven wrinkles on the bonding surface when the release film is peeled off, the leveling part 5 of this case includes two supports 51. Adjustment grooves 52 are provided on both of the two supports 51. The inner walls of the two adjustment grooves 52 are rotatably connected with swing arms 53. A first tension spring 54 is elastically connected between each swing arm 53 and the inner wall of the adjustment groove 52 where it is located. A roller 55 is rotatably connected between the ends of the two swing arms 53. The anti-shake part 6 of this case includes two support arms 61. The ends of the two support arms 61 are respectively fixedly connected to the side of the two supports 51 close to each other. A cushion table 62 is fixedly connected to the other ends of the two support arms 61. In order to prevent the end of the release film from being ejected when peeled off, the anti-ejection part 7 of this case includes a vertical frame 71. The vertical frame 71 is fixedly connected to one side of the cushion table 62. A slide plate 72 is slidably connected to the inner wall of the vertical frame 71. A second tension spring 73 is elastically connected between the bottom of the slide plate 72 and the bottom of the inner wall of the vertical frame 71. A lever 74 is fixedly connected to the side wall of the slide plate 72. A pressing arm 75 is provided on the other side of the slide plate 72. There are two vertical frames 71, slide plates 72, second tension springs 73 and levers 74 respectively. The other vertical frame 71, slide plate 72, second tension spring 73 and lever 74 are symmetrically installed on the other side of the cushion table 62. The pressing arm 75 is fixedly connected between the two slide plates 72. The two levers 74 are respectively in contact with the two swing arms 53.

[0035] In this embodiment, the peeling mechanism 2 of this case includes a driving groove, a driving arm and a clamp. The driving groove is opened at the rear side of the top of the peeling strength testing machine 1. One end of the driving arm is slidably connected in the driving groove. A motor is installed in the driving groove. The output shaft of the motor is fixedly connected with a screw rod. The driving arm is threadedly sleeved on the screw rod. A tension sensor is installed between the clamp and the driving arm. In order to stably clamp the test plate and install corresponding detection tools, the clamping part 4 of this case includes a bottom plate 41. The bottom plate 41 is fixedly connected to one side of the top of the peeling strength testing machine 1. Two bolts 42 are rotatably connected to both sides of the top of the bottom plate 41. A clamping plate 43 is threadedly sleeved on the two bolts 42. Two limiting arms 44 are symmetrically connected to the top of the bottom plate 41. Two tooth arms 45 are symmetrically connected to the side faces of both ends of the bottom plate 41. An electric push rod 46 is fixedly connected to the middle of the side wall of the bottom plate 41. The end of the inner rod of the electric push rod 46 is fixedly connected to the cushion table 62. The two supports 51 are attached to the side wall of the bottom plate 41.

[0036] It should be noted that in order to prevent the test plate from shaking under the influence of the bonding tension, the anti-shake part 6 of this case further includes a magnet 63. One side of the top of the cushion table 62 is a slope structure. A groove is opened on the top plane of the cushion table 62. The magnet 63 is installed on the inner wall of the groove. A photoelectric sensor 64 is installed on the top slope of the cushion table 62. The model of this sensor is the E3Z series E3Z-L type sensor, which has a fast response speed and can detect the change of light and send out signals in time. The photoelectric sensor 64 is electrically connected to the electric push rod 46, and the electric push rod 46 is automatically closed by the signal sent by the photoelectric sensor 64.

[0037] It should be noted that in order to further remove the residual adhesive on the test plate synchronously during the peeling process, the degumming part 8 of this case includes a U-shaped frame 81. The two ear ends of the U-shaped frame 81 are respectively fixedly connected to the tops of the two supports 51. A reciprocating lead screw 82 is rotatably connected between the inner walls of the U-shaped frame 81. A lead screw slider 83 is threadedly sleeved on the reciprocating lead screw 82. Two convex pieces 84 are symmetrically connected to the side wall of the lead screw slider 83. A rotating rod is rotatably connected between the two convex pieces 84. A scraping plate 85 is fixedly sleeved on the outer wall of the rotating rod. Torsion springs 86 are sleeved at both ends of the rotating rod. The two torsion springs 86 are respectively elastically connected between the adjacent convex piece 84 and the scraping plate 85. The scraping plate 85 is always pressed against the test plate surface by the torsion force of the torsion spring 86, avoiding problems such as plate surface wear and gap formation during long-term scraping of the residual adhesive. The two ear ends of the U-shaped frame 81 are both movably penetrated by a rotating shaft 87. The two ends of the reciprocating lead screw 82 are fixedly connected between the two rotating shafts 87. Gaskets 88 are fixedly sleeved on the outer walls of the two rotating shafts 87. The two gaskets 88 are respectively attached to the outer walls of the two ear ends of the U-shaped frame 81. The gasket 88 further improves the rotation stability of the reciprocating lead screw 82. Gear 89 is fixedly sleeved at one end of the two rotating shafts 87 away from each other. The two gears 89 are respectively meshed with the two tooth arms 45. A test adhesive plate 9 is clamped between the clamping plate 43 and the bottom plate 41. A release film body 3 is adhered to the top of the test adhesive plate 9. The test adhesive plate 9 movably passes between the two supports 51 and between the two vertical frames 71. The test adhesive plate 9 and the magnet 63 attract each other with opposite polarities. The suction force can prevent the test adhesive plate 9 from shaking up and down and does not affect the lateral displacement of the magnet 63. The movable end of the release film body 3 bypasses the roller 55 and is clamped on the fixture of the peeling mechanism 2.

[0038] Working principle: The peeling strength testing machine 1 belongs to an existing device in the field of release film peeling strength testing. Its principle is to operate the motor in the peeling mechanism 2 through the control panel to drive the screw rod to rotate in the drive groove, prompting the drive arm to drive the fixture to slide and stretch the movable end of the release film body 3 for peeling strength testing. The change data of the tensile force is fed back to the control panel through the tensile force sensor. This case will not elaborate too much.

[0039] The clamping plate 43 is driven by the adjusting bolt 42 to clamp one end of the test adhesive plate 9. The two limiting arms 44 are used to correct the clamping angle of the test adhesive plate 9 to ensure that the test adhesive plate 9 is perpendicular to the clamping plate 43 and the fixture in the peeling mechanism 2. The fixture moves away from the test adhesive plate 9 at a constant speed, pulling the release film body 3. At the same time, the electric push rod 46 is started to push the pad table 62 to move away from the bottom plate 41 at a constant speed. At this time, the release film body 3 is continuously peeled off from the test adhesive plate 9. The pad table 62 drives the two supports 51 to move synchronously through the support arm 61, and the roller 55 follows the movement. At the same time, the roller 55 is always pressed on the upper surface of the release film body 3 by the tension of the first tension spring 54. Since the roller 55 is moving at the same time, the roller 55 will not cause resistance to the release film body 3 during peeling, thus ensuring the correctness of the detection. The roller 55 rolls on the non-peeled surface of the release film body 3, improving the bonding stability and quality of the release film body 3, and will not produce wrinkles or offsets during peeling, further ensuring the flatness when each adhesive point is separated, avoiding the problem of the bonding surface skewing to one side or multiple sides, and thus improving the detection accuracy.

[0040] The suspended part of the test adhesive plate 9 is always supported by the pad table 62 to maintain stability, and at the same time is attracted by the magnet 63 to avoid the problem of the test adhesive plate 9 shaking under force, improving the stability during peeling. The U-shaped frame 81 moves away from the clamping plate 43 synchronously with the support 51. The gear 89 rolls on the tooth arm 45 and drives the rotating shaft 87 to rotate, causing the reciprocating lead screw 82 to drive the lead screw slider 83 to move reciprocally, so that the scraper 85 reciprocally scrapes the residual adhesive on the top surface of the test adhesive plate 9, timely dealing with the residual adhesive after peeling, avoiding the solidification and drying of the adhesive, ensuring the cleanliness of the plate surface, and reducing the pressure of subsequent maintenance and cleaning.

[0041] The roller 55 continues to roll until it separates from the test adhesive plate 9. At this time, the tension of the first tension spring 54 pulls the swing arm 53 to flip and descend. The roller 55 touches the inclined surface of the pad table 62 and blocks the photoelectric sensor 64, thus sending an induction signal to stop the movement of the electric push rod 46. At this time, the magnet 63 stays at the end of the ground of the suspended part of the test adhesive plate 9 for support. The lever 74 loses the resistance of the swing arm 53, and thus drives the slide plate 72 to descend under the tension of the second tension spring 73, causing the pressing arm 75 to descend and press the end of the release film body 3, preventing the problem of the release film body 3 falling off and ejecting, improving the safety of daily use, preventing the release film body 3 from sticking to the bonding equipment, workbench and self-bonding due to ejection, improving the integrity of the release film body 3, and also preventing the detection accuracy from changing instantaneously due to the ejection of the release film body 3, further improving the detection accuracy and stability.

[0042] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "comprising an..." does not exclude the presence of additional identical elements in the process, method, article or device comprising the said element.

Claims

1. A release film surface peel strength testing device, characterized in that, Including: Peel strength testing machine (1); Peeling mechanism (2) for clamping and pulling the release film; Clamping part (4) installed on the top of the peel strength testing machine (1) for clamping the test plate; Flattening part (5) installed on the clamping part (4) for adaptively improving the flatness of the debonding surface of the release film; Anti-shake part (6) installed on the flattening part (5) for improving the force balance and stability of the suspended part of the test plate; Anti-projectile part (7) installed on the anti-shake part (6) for automatically preventing the end of the release film from falling off and ejecting; Glue removal part (8) installed on the flattening part (5) for synchronously removing the residual glue during the peeling of the release film; The flattening part (5) includes two supports (51), adjustment grooves (52) are opened on both of the two supports (51), swing arms (53) are rotatably connected to the inner walls of the two adjustment grooves (52), and a first tension spring (54) is elastically connected between each swing arm (53) and the inner wall of the adjustment groove (52) where it is located. A roller (55) is rotatably connected between the ends of the two swing arms (53); The anti-shake part (6) includes two support arms (61), the ends of the two support arms (61) are respectively fixedly connected to one side of the two supports (51) close to each other, and a cushion table (62) is fixedly connected to the other ends of the two support arms (61); The anti-projectile part (7) includes a vertical frame (71), the vertical frame (71) is fixedly connected to one side of the cushion table (62), a slide plate (72) is slidably connected to the inner wall of the vertical frame (71), a second tension spring (73) is elastically connected between the bottom of the slide plate (72) and the bottom of the inner wall of the vertical frame (71), a lever (74) is fixedly connected to the side wall of the slide plate (72), a pressing arm (75) is arranged on the other side of the slide plate (72), there are two of each of the vertical frame (71), slide plate (72), second tension spring (73) and lever (74), and the other vertical frame (71), slide plate (72), second tension spring (73) and lever (74) are symmetrically installed on the other side of the cushion table (62), the pressing arm (75) is fixedly connected between the two slide plates (72), and the two levers (74) are respectively in contact with the two swing arms (53).

2. The surface peel strength testing device for a release film according to claim 1, characterized in that: The peeling mechanism (2) includes a driving groove, a driving arm and a clamp. The driving groove is opened at the rear side of the top of the peel strength testing machine (1), one end of the driving arm is slidably connected in the driving groove, a motor is installed in the driving groove, the output shaft of the motor is fixedly connected with a screw rod, the driving arm is threadedly sleeved on the screw rod, and a tension sensor is installed between the clamp and the driving arm.

3. The surface peeling strength testing device for a release film according to claim 2, characterized in that: The clamping part (4) includes a bottom plate (41), the bottom plate (41) is fixedly connected to one side of the top of the peel strength testing machine (1), both sides of the top of the bottom plate (41) are rotatably connected with bolts (42), a clamping plate (43) is threadedly sleeved on the two bolts (42), two limiting arms (44) are symmetrically connected to the top of the bottom plate (41), tooth arms (45) are symmetrically connected to both end sides of the bottom plate (41), and an electric push rod (46) is fixedly connected to the middle of the side wall of the bottom plate (41).

4. The surface peeling strength testing device for a release film according to claim 3, characterized in that: The end of the inner rod of the electric push rod (46) is fixedly connected to the cushion table (62), and the two supports (51) are attached to the side wall of the bottom plate (41).

5. The surface peeling strength testing device for a release film according to claim 4, characterized in that: The anti-shake part (6) further includes a magnet (63), one side of the top of the cushion table (62) is a slope structure, a groove is opened on the top plane of the cushion table (62), the magnet (63) is installed on the inner wall of the groove, a photoelectric sensor (64) is installed on the top slope of the cushion table (62), and the photoelectric sensor (64) is electrically connected to the electric push rod (46).

6. The surface peel strength testing device for a release film according to claim 5, characterized in that: The glue removing part (8) includes a U-shaped frame (81), the two ear ends of the U-shaped frame (81) are respectively fixedly connected to the tops of the two supports (51), a reciprocating lead screw (82) is rotatably connected between the inner walls of the U-shaped frame (81), a lead screw slider (83) is threadedly sleeved on the reciprocating lead screw (82), two convex pieces (84) are symmetrically connected to the side wall of the lead screw slider (83), a rotating rod is rotatably connected between the two convex pieces (84), a scraping plate (85) is fixedly sleeved on the outer wall of the rotating rod, torsion springs (86) are sleeved on both ends of the rotating rod, and the two torsion springs (86) are respectively elastically connected between the adjacent convex piece (84) and the scraping plate (85).

7. An off - type film surface peel strength testing device according to claim 6, characterized in that: The two ear ends of the U-shaped frame (81) are both movably penetrated by rotating shafts (87), the two ends of the reciprocating lead screw (82) are fixedly connected between the two rotating shafts (87), gaskets (88) are fixedly sleeved on the outer walls of the two rotating shafts (87), the two gaskets (88) are respectively attached to the outer walls of the two ear ends of the U-shaped frame (81), and gears (89) are fixedly sleeved on the ends of the two rotating shafts (87) away from each other.

8. The surface peeling strength testing device for a release film according to claim 7, characterized in that: The two gears (89) are respectively meshed with the two tooth arms (45), a test sticky plate (9) is clamped between the clamping plate (43) and the bottom plate (41), and a release film body (3) is bonded to the top of the test sticky plate (9).

9. The surface peeling strength testing device for a release film according to claim 8, wherein: The test sticky plate (9) movably passes between the two supports (51) and between the two vertical frames (71), the test sticky plate (9) and the magnet (63) attract each other with opposite polarities, and the movable end of the release film body (3) bypasses the roller (55) and is clamped by the fixture of the peeling mechanism (2).

Images