Release film surface peel strength testing equipment

Abstract

The invention relates to the technical field of peel strength testing, and discloses release film surface peel strength testing equipment which comprises a peel strength testing machine, a peeling mechanism used for clamping and pulling a release film, a clamping part mounted at the top of the peel strength testing machine and used for clamping a test plate, and a leveling part mounted on the clamping part, the device is used for adaptively improving the flatness of a release film debonding surface, the release film bonding stability and detection precision are improved, the flatness of the release film debonding surface is remarkably improved through the unique design of the leveling part, adjusting grooves, swing arms, first tension springs and rotating rollers on two supports act synergistically, in the stripping process, the flatness of the release film debonding surface is improved, and the flatness of the release film debonding surface is improved. The roller is always pressed on the unstripped surface of the release film to roll under the tension action of the tension spring I, so that the problems of wrinkling, deviation, deflection and the like of the bonding surface of the release film are effectively avoided, and the smoothness of each bonding point during separation is ensured, so that the detection precision is greatly improved, and the test result can more truly reflect the stripping strength performance of the release film.

Description

Technical Field

[0001] The invention relates to the technical field of peeling strength testing, in particular to a device for testing the surface peeling strength of a release film. Background Art

[0002] In the field of material testing, the application of release films is becoming more and more extensive, and its 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, accurate measurement of the peel strength of release films is essential to ensure the stability and reliability of product production.

[0003] According to the Chinese patent publication number CN114858703B, the patent relates to a peeling strength testing device, including a horizontal driving screw module that performs horizontal reciprocating motion under the drive of a horizontal driving mechanism, and a vertical driving screw module that performs vertical up and down motion under the drive of a vertical driving mechanism; the horizontal driving screw module is connected to a rotating platform assembly; the vertical driving screw module is connected to a testing assembly, the rotating platform assembly includes a connecting plate connected to the horizontal driving screw module, a rotating clamping device connected to the connecting plate for adjusting the peeling angle, and a sample placing plate connected to the rotating clamping device for placing the test sample, so as to realize the synchronous movement of the test sample in the horizontal and vertical directions, ensure that the angle at the peeling point is constant during the test process, realize the peeling strength test of the peeling angle that is angled with the movement direction of the horizontal driving screw module, the sample placing plate is detachable, and the experimental efficiency is high and the cost is low.

[0004] However, during the test of the existing peel tester, the release film is not firmly bonded to the test board, resulting in wrinkles and unevenness on the bonding surface of the release film during peeling, thereby reducing the detection accuracy. At the same time, due to the influence of the tension during peeling, the suspended part of the test board will be offset and unstable due to the tension, further reducing the detection accuracy. In addition, the release film will fall off when it is peeled to the end. When it falls off, the release film will be ejected due to its own deformation, and then re-bonded to the workbench and equipment, causing pollution to the work area. Therefore, a release film surface peel strength test device is proposed to solve the above problems. Summary of the invention

[0005] 1. Technical issues to be solved

[0006] In view of the deficiencies in the prior art, the present invention provides a release film surface peel strength testing device, which solves the problems of the adhesive surface being unstable during release film peeling, the adhesive test plate being easily shaken by tension, and the end of the release film being ejected and detached.

[0007] (II) Technical solution

[0008] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a release film surface peeling strength testing device, comprising a peeling strength testing machine, a peeling mechanism for clamping and pulling the release film, a clamping part installed on the top of the peeling strength testing machine for clamping a test plate, a leveling part installed on the clamping part for adaptively improving the flatness of the release film debonding surface, an anti-sway part installed on the leveling part for improving the force balance and stability of the suspended part of the test plate, an anti-ejection part installed on the anti-sway part for automatically preventing the end of the release film from falling off and ejecting, a glue removal part installed on the leveling part for synchronously removing residual glue during the release film peeling, and the leveling part comprising two supports, both of which are opened An adjusting groove is provided, and the inner walls of the two adjusting grooves are rotatably connected with swing arms, and each swing arm is elastically connected to the inner wall of the adjusting groove where it is located with a tension spring, and a roller is rotatably connected between the ends of the two swing arms. The anti-sway part includes two support arms, and the ends of the two support arms are respectively fixedly connected to the side where the two supports are close to each other, and the other ends of the two support arms are fixedly connected with a pad. The anti-ejection part includes a vertical frame, and the vertical frame is fixedly connected to one side of the pad, and the inner wall of the vertical frame is slidably connected with a slide, and the bottom of the slide is elastically connected with a tension spring 2, and the side wall of the slide is fixedly connected with a lever, and a pressure arm is arranged on the other side of the slide.

[0009] Preferably, the number of the vertical frame, the slide plate, the second tension spring and the shift rod is two each, and the other vertical frame, the slide plate, the second tension spring and the shift rod are symmetrically installed on the other side of the pad, the pressure arm is fixedly connected between the two slide plates, and the two shift 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 on the top rear side of the peeling 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 to a screw, the driving arm is threadedly sleeved on the screw, and a tension sensor is installed between the clamp and the driving arm.

[0011] Preferably, the clamping part includes a base plate, which is fixedly connected to one side of the top of the peel strength testing machine, and bolts are rotatably connected to both sides of the top of the base plate. Clamps are threadedly sleeved on two of the bolts, and two limit arms are symmetrically connected to the top of the base plate, and tooth arms are symmetrically connected to the side surfaces at both ends of the base plate, and an electric push rod is fixedly connected to the middle of the side wall of the base plate.

[0012] Preferably, the inner rod end of the electric push rod is fixedly connected to the base, and the two supports are attached to the side walls of the base plate.

[0013] Preferably, the anti-sway part also includes a magnet, one side of the top of the pad is a sloped structure, a groove is opened on the top plane of the pad, the magnet is installed on the inner wall of the groove, and a photoelectric sensor is installed on the top slope of the pad, and the photoelectric sensor is electrically connected to the electric push rod.

[0014] Preferably, the glue removal part includes a U-shaped frame, two ear ends of the U-shaped frame are respectively fixedly connected to the tops of two supports, a reciprocating screw is rotatably connected between the inner walls of the U-shaped frame, a screw slider is threadedly sleeved on the reciprocating screw, two protrusions are symmetrically connected to the side wall of the screw slider, a rotating rod is rotatably connected between the two protrusions, a scraper is fixedly sleeved on the outer wall of the rotating rod, torsion springs are sleeved at both ends of the rotating rod, and the two torsion springs are elastically connected between the protrusions and scrapers adjacent to themselves.

[0015] Preferably, both ear ends of the U-shaped frame are movably penetrated by a rotating shaft, both ends of the reciprocating screw are fixedly connected between the two rotating shafts, the outer walls of the two rotating shafts are fixedly sleeved with gaskets, the two gaskets are respectively fitted with the outer walls of the two ear ends of the U-shaped frame, and the ends of the two rotating shafts away from each other are fixedly sleeved with gears.

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

[0017] Preferably, the test adhesive plate moves between two supports and between two vertical frames, the test adhesive plate and the magnet attract each other, and the movable end of the release film body bypasses the rotating roller and is clamped on the clamp 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. The release film surface peeling strength test equipment improves the bonding stability and detection accuracy of the release film. The unique design of the leveling part significantly improves the flatness of the release film's debonding surface. The adjustment slots, swing arms, tension spring 1 and rollers on the two supports work together. During the peeling process, the roller is always pressed on the unpeeled surface of the release film under the tension of the tension spring 1 and rolls, effectively avoiding problems such as wrinkles, offsets and deflections on the release film's bonding surface, ensuring the flatness of each bonding point when it is detached, thereby greatly improving the detection accuracy and making the test results more truly reflect the peeling strength performance of the release film.

[0021] 2. The release film surface peeling strength test equipment adopts enhanced test board stability, and the anti-sway part ensures the stability of the test board in many aspects. On the one hand, the pad is connected to the support through the support arm, and moves synchronously with the release film peeling process under the push of the electric push rod, continuously supporting the suspended part of the test board to prevent it from shaking due to the tension. On the other hand, the magnet on the top of the pad generates suction to the test board, further stabilizing the test board and preventing it from shaking up and down, which greatly improves the stability of the peeling process and reduces the adverse effects of the shaking of the test board on the detection accuracy.

[0022] 3. The release film surface peeling strength test equipment adopts the method of preventing the end of the release film from being ejected. The anti-ejection part effectively solves the problem of the end of the release film being ejected. When the release film is peeled to the end, the roller separates from the test plate, triggering 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 tension spring, so that the pressure 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 and ensures the cleanliness of the working area, but also maintains the integrity of the release film, prevents the instantaneous change of the detection accuracy due to ejection, and ensures the safety and stability of the test process.

[0023] 4. The release film surface peeling strength test equipment adopts synchronous removal of residual adhesive. The adhesive removal part realizes synchronous and efficient treatment of residual adhesive on the test plate during the peeling process. The U-shaped frame, reciprocating screw, screw slider, convex piece, rotating rod, scraper and torsion spring and other components work together. When the support moves, the reciprocating screw is driven to rotate through the engagement of the gear and the tooth arm, so that the scraper reciprocates along the top surface of the test plate to scrape the residual adhesive. The torsion spring ensures that the scraper is always in close contact with the plate surface, effectively removing the adhesive while avoiding the generation of gaps, keeping the test plate clean, reducing the burden of subsequent maintenance and cleaning, and ensuring the continuous normal operation of the test equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic diagram of the overall structure of a release film surface peeling strength testing device proposed by the present invention;

[0025] Figure 2 A connection diagram of a release film body, a test adhesive plate and a clamping part of a release film surface peeling strength test device proposed by the present invention;

[0026] Figure 3 This is a schematic diagram of the structure of the clamping part of a release film surface peeling strength testing device proposed by the present invention;

[0027] Figure 4 A connection diagram of a flattening part, an anti-sway part, an anti-ejection part and a glue removal part of a release film surface peeling strength testing device proposed by the present invention;

[0028] Figure 5This is a schematic structural diagram of a flattening part of a release film surface peeling strength testing device proposed by the present invention;

[0029] Figure 6 A schematic structural diagram of an anti-sway portion and an anti-ejection portion of a release film surface peeling strength testing device proposed by the present invention;

[0030] Figure 7 The present invention provides a schematic structural diagram of a glue removal unit for testing the surface peeling strength of a release film.

[0031] In the figure: 1. Peel strength tester; 2. Peeling mechanism; 3. Release film body; 4. Clamping part; 41. Bottom plate; 42. Bolt; 43. Clamping plate; 44. Limiting arm; 45. Tooth arm; 46. Electric push rod; 5. Leveling part; 51. Support; 52. Adjusting slot; 53. Swing arm; 54. Tension spring 1; 55. Roller; 6. Anti-sway part; 61. Support arm; 62. Pad; 63. Magnet; 64. Photoelectric sensor; 7. Anti-ejection part; 71. Vertical frame; 72. Slide plate; 73. Tension spring 2; 74. Push rod; 75. Press arm; 8. Glue removal part; 81. U-shaped frame; 82. Reciprocating screw; 83. Screw slider; 84. Lug; 85. Scraper; 86. Torsion spring; 87. Rotating shaft; 88. Gasket; 89. Gear; 9. Test adhesive plate. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] See also Figure 1-7 The present invention provides a technical solution: a release film surface peeling strength testing device, comprising a peeling strength testing machine 1, a peeling mechanism 2 in this case is used to clamp and pull the release film, a clamping part 4 in this case is installed on the top of the peeling strength testing machine 1, and is used to clamp a test plate, a leveling part 5 in this case is installed on the clamping part 4, and is used to adaptively improve the flatness of the release film debonding surface, an anti-sway 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, an anti-ejection part 7 in this case is installed on the anti-sway part 6, and is used to automatically prevent the end of the release film from falling off and ejecting, and a glue removal part 8 in this case is installed on the leveling part 5, and is used to synchronously remove residual adhesive during the peeling of the release film.

[0034] In the present invention, in order to avoid the problem of uneven wrinkles on the adhesive surface when the release film is peeled off, the leveling portion 5 of the present invention includes two supports 51, each of which is provided with an adjustment groove 52, and the inner walls of the two adjustment grooves 52 are rotatably connected to a swing arm 53, and a tension spring 54 is elastically connected between each swing arm 53 and the inner wall of the adjustment groove 52 where it is located, and a roller 55 is rotatably connected between the ends of the two swing arms 53. The anti-sway portion 6 of the present invention includes two support arms 61, and the ends of the two support arms 61 are respectively fixedly connected to the sides of the two supports 51 close to each other, and the other ends of the two support arms 61 are fixedly connected to a pad 62. In order to prevent the release film from being ejected when the end is peeled off, the anti-sway portion 6 of the present invention includes two support arms 61, and the ends of the two support arms 61 are respectively fixedly connected to the sides of the two support arms 51 close to each other, and the other ends of the two support arms 61 are fixedly connected to a pad 62. The ejection part 7 includes a vertical frame 71, which is fixedly connected to one side of the pad 62. A slide plate 72 is slidably connected to the inner wall of the vertical frame 71. A 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 pressure arm 75 is provided on the other side of the slide plate 72. There are two vertical frames 71, two slide plates 72, two tension springs 73 and two levers 74. Another vertical frame 71, slide plate 72, two tension springs 73 and lever 74 are symmetrically installed on the other side of the pad 62. The pressure 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 includes a driving groove, a driving arm and a clamp. The driving groove is opened on the top rear side of the peeling strength testing machine 1. One end of the driving arm is slidably connected to the driving groove. A motor is installed in the driving groove. The output shaft of the motor is fixedly connected to a screw. The driving arm is threadedly sleeved on the screw. A tension sensor is installed between the clamp and the driving arm. In order to stably clamp the test plate and install the corresponding detection tool, the clamping part 4 in 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. Bolts 42 are rotatably connected to both sides of the top of the bottom plate 41. Clamps 43 are threadedly sleeved on the two bolts 42. Two limit arms 44 are symmetrically connected to the top of the bottom plate 41. Tooth arms 45 are symmetrically connected to the sides of the two 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 inner rod end of the electric push rod 46 is fixedly connected to the pad 62, and two supports 51 are attached to the side wall of the bottom plate 41.

[0036] It is worth noting that in order to prevent the test board from shaking due to the influence of the bonding tension, the anti-sway part 6 of this case also includes a magnet 63. The top side of the pad 62 is a slope structure. The top plane of the pad 62 is provided with a groove. The magnet 63 is installed on the inner wall of the groove. A photoelectric sensor 64 is installed on the top slope of the pad 62. The sensor model is E3Z series E3Z-L type sensor, which has a fast response speed and can detect changes in light and send 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 sending a signal through the photoelectric sensor 64.

[0037] It is worth noting that in order to further remove the residual adhesive on the test plate synchronously during the stripping process, the adhesive removal part 8 in this case includes a U-shaped frame 81, and the two ear ends of the U-shaped frame 81 are respectively fixedly connected to the tops of the two supports 51, and a reciprocating screw 82 is rotatably connected between the inner walls of the U-shaped frame 81, and a screw slider 83 is threadedly sleeved on the reciprocating screw 82. The side wall of the screw slider 83 is symmetrically connected with two protruding pieces 84, and a rotating rod is rotatably connected between the two protruding pieces 84. The outer wall of the rotating rod is fixedly sleeved with a scraper 85, and both ends of the rotating rod are sleeved with torsion springs 86. The two torsion springs 86 are elastically connected between the protruding pieces 84 and the scraper 85 adjacent to themselves, and the scraper 85 is always kept close to the test plate surface by the torsion of the torsion spring 86, so as to avoid the problem of plate surface wear and gap caused by long-term scraping of residual adhesive. The two ear ends of the U-shaped frame 81 are movable through There is a rotating shaft 87, and the two ends of the reciprocating screw rod 82 are fixedly connected between the two rotating shafts 87. The outer walls of the two rotating shafts 87 are fixedly sleeved with gaskets 88, and the two gaskets 88 are respectively fitted with the outer walls of the two ear ends of the U-shaped frame 81. The gaskets 88 further improve the rotation stability of the reciprocating screw rod 82. The ends of the two rotating shafts 87 that are away from each other are fixedly sleeved with gears 89, and the two gears 89 are respectively meshed with two tooth arms 45. A test adhesive plate 9 is clamped between the clamp 43 and the bottom plate 41, and the top of the test adhesive plate 9 is adhered with a release film body 3. The test adhesive plate 9 moves through between the two supports 51 and between the two vertical frames 71. The test adhesive plate 9 and the magnet 63 are attracted by opposite poles. 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 clamp of the peeling mechanism 2.

[0038] Working principle, the peel strength testing machine 1 belongs to the existing device in the field of release film peel strength testing. Its principle is to operate the motor in the peeling mechanism 2 through the control panel to drive the screw to rotate in the driving groove, prompting the driving arm to drive the clamp to slide and stretch the active end of the release film body 3 to perform a peel strength test, and the tension change data is fed back to the control panel through the tension sensor. This case will not be elaborated in detail.

[0039] The clamping plate 43 is driven by the adjusting bolt 42 to clamp one end of the test adhesive plate 9, and the limiting arms 44 on both sides 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 clamp in the peeling mechanism 2. The clamp is moved away from the test adhesive plate 9 at a uniform speed, so that the clamp pulls the release film body 3, and the electric push rod 46 is started synchronously to push the pad 62 away from the bottom plate 41 at a uniform speed. At this time, the release film body 3 is continuously peeled off from the test adhesive plate 9, and the pad 62 drives the two supports 51 to move synchronously through the support arm 61, and prompts the roller 55 to follow As it moves, the roller 55 is always pressed against the upper surface of the release film body 3 by the tension of the tension spring 54. Since the roller 55 is moving at the same time, it will not cause resistance to the release film body 3 during peeling, thereby ensuring the accuracy of the detection. The roller 55 rolls on the unpeeled surface of the release film body 3, which improves the bonding stability and bonding quality of the release film body 3 and does not produce wrinkles or offsets during peeling, further ensuring the flatness of each bonding point when it is detached, avoiding the problem of the bonding surface deflecting to one side or multiple sides, thereby improving the detection accuracy.

[0040] The suspended part of the test adhesive plate 9 is always supported by the pad 62 to keep it stable, and at the same time is attracted by the magnet 63, so as to avoid the problem of the test adhesive plate 9 shaking due to force, and improve the stability during peeling. The U-shaped frame 81 follows the support 51 to move away from the clamping plate 43 synchronously, and the gear 89 rolls on the tooth arm 45 and drives the rotating shaft 87 to rotate, so that the reciprocating screw 82 drives the screw slider 83 to reciprocate, so that the scraper 85 reciprocates along the top surface of the test adhesive plate 9 to scrape the residual adhesive. The adhesive residue after peeling is dealt with in time to avoid the adhesive solidification and drying, thereby ensuring the cleanliness of the board surface and reducing the pressure of subsequent maintenance and cleaning.

[0041] The roller 55 continues to roll until it leaves the test adhesive plate 9. At this time, the tension of the tension spring 1 54 pulls the swing arm 53 to flip and descend. The roller 55 contacts the inclined surface of the pad 62 and blocks the photoelectric sensor 64, thereby sending an induction signal to stop the movement of the electric push rod 46. At this time, the magnet 63 stays on the ground at the end of the suspended part of the test adhesive plate 9 for support, and the lever 74 loses the resistance of the swing arm 53, thereby driving the slide plate 72 to descend under the tension of the tension spring 2 73, prompting the pressure arm 75 to descend and press the end of the release film body 3, preventing the release film body 3 from falling off and ejecting, thereby improving the safety of daily use, preventing the release film body 3 from ejecting and bonding equipment, workbench and self-adhesion, improving the integrity of the release film body 3, and preventing the ejection of the release film body 3 from causing instantaneous changes in detection accuracy, thereby further improving the accuracy and stability of detection.

[0042] It should be noted that, in this article, relational terms such as first and second, etc. are only used 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 "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "including one..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

Claims

1. A release film surface peel strength testing device, characterized in that: include: Peel strength testing machine (1); A peeling mechanism (2), used for clamping and pulling the release film; A clamping portion (4), mounted on the top of the peel strength testing machine (1), and used for clamping the test plate; A flattening portion (5) is mounted on the clamping portion (4) and is used to adaptively improve the flatness of the release film's debonding surface; An anti-sway portion (6) is mounted on the leveling portion (5) and is used to improve the force balance and stability of the suspended portion of the test plate; An anti-ejection portion (7) is mounted on the anti-sway portion (6) and is used to automatically prevent the end of the release film from falling off and ejecting; A glue removal unit (8), installed on the flattening unit (5), for simultaneously removing residual adhesive during the peeling of the release film; The leveling part (5) comprises two supports (51), each of the two supports (51) is provided with an adjustment slot (52), the inner walls of the two adjustment slots (52) are rotatably connected to a swing arm (53), each swing arm (53) is elastically connected to the inner wall of the adjustment slot (52) where it is located by a tension spring (54), and a roller (55) is rotatably connected between the ends of the two swing arms (53); The anti-sway part (6) comprises two supporting arms (61), the ends of the two supporting arms (61) are respectively fixedly connected to the sides of the two supporting seats (51) close to each other, and the other ends of the two supporting arms (61) are fixedly connected to a pad (62); The anti-ballistic portion (7) comprises a vertical frame (71), the vertical frame (71) is fixedly connected to one side of the pad (62), the inner wall of the vertical frame (71) is slidably connected to a slide plate (72), a 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), and a pressure arm (75) is provided on the other side of the slide plate (72).

2. The release film surface peeling strength testing device according to claim 1, characterized in that: The number of each of the vertical frame (71), the slide plate (72), the second tension spring (73) and the shifting rod (74) is two; another vertical frame (71), the slide plate (72), the second tension spring (73) and the shifting rod (74) are symmetrically installed on the other side of the pad (62); the pressing arm (75) is fixedly connected between the two slide plates (72); and the two shifting rods (74) are respectively in contact with the two swing arms (53).

3. The release film surface peeling strength testing device according to claim 2, characterized in that: The peeling mechanism (2) comprises a driving groove, a driving arm and a clamp, wherein the driving groove is arranged at the top rear side 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 to 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.

4. The release film surface peeling strength testing device according to claim 3, characterized in that: The clamping portion (4) comprises 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), two clamping plates (43) are threadedly sleeved on the two bolts (42), the top of the bottom plate (41) is symmetrically connected with two limit arms (44), the two end sides of the bottom plate (41) are symmetrically connected with tooth arms (45), and the middle of the side wall of the bottom plate (41) is fixedly connected with an electric push rod (46).

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

6. The release film surface peeling strength testing device according to claim 5, characterized in that: The anti-sway part (6) also includes a magnet (63), the top side of the pad (62) is an inclined structure, the top plane of the pad (62) is provided with a groove, the magnet (63) is installed on the inner wall of the groove, and the top inclined surface of the pad (62) is provided with a photoelectric sensor (64), and the photoelectric sensor (64) is electrically connected to the electric push rod (46).

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

8. The release film surface peeling strength testing device according to claim 7, characterized in that: 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 screw rod (82) are fixedly connected between the two rotating shafts (87), the outer walls of the two rotating shafts (87) are both fixedly sleeved with gaskets (88), the two gaskets (88) are respectively fitted with the outer walls of the two ear ends of the U-shaped frame (81), and the ends of the two rotating shafts (87) that are away from each other are both fixedly sleeved with gears (89).

9. The release film surface peeling strength testing device according to claim 8, characterized in that: 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); and a release film body (3) is bonded to the top of the test adhesive plate (9).

10. The release film surface peeling strength testing device according to claim 9, characterized in that: The test adhesive plate (9) moves through between the two supports (51) and between the two vertical frames (71), and the test adhesive plate (9) and the magnet (63) attract each other due to opposite charges. The movable end of the release film body (3) passes around the rotating roller (55) and is clamped on the clamp of the peeling mechanism (2).

Images