Base material stripping force detection tool and detection method

Abstract

The invention discloses a base material stripping force detection tool and a detection method, the base material stripping force detection tool comprises a tensile machine chuck and a base, and the base is provided with a sheet placing table; in the Y-axis direction, a pressing device and a locking assembly are sequentially arranged on the sheet placing table; the pressing device comprises at least two pressing parts which are arranged at intervals in the X-axis direction; the locking assembly can enable the material pressing part of the pressing device to be locked and abut against the object placing face of the piece placing table. Compared with an existing base material stripping force detection tool, the base material stripping force detection tool has the advantages that the material pressing parts of the downward pressing device are improved to be designed at intervals in the X-axis direction, so that the soft base material to be detected can be always clung to the sheet placing table when being subjected to vertically upward stripping force, and the influence on the detection structure caused by deformation of the soft base material is avoided.

Description

Technical Field

[0001] The present invention belongs to the technical field of substrate detection tooling, and in particular relates to a substrate peeling force detection tooling and a detection method. Background Art

[0002] Various substrates are required in the manufacturing process of automobiles, and a 90° peel force test is usually performed on the corresponding substrates before use to ensure that the performance of the substrates meets the design requirements.

[0003] When conducting a 90° peel test, the substrate is usually fixed to a corresponding fixture to improve the accuracy of the test. For example, Chinese utility model patent application number 201020183713.3 discloses a 90° peel test fixture for a composite material of leather or fabric coated with a hard substrate, which includes a U-shaped frame and two smooth shafts. During operation, the testing machine drives the leather or fabric through the gap between the two smooth shafts, so that the leather or fabric always maintains a 90° right angle with the hard substrate during the peeling process, thereby accurately and efficiently detecting the adhesion force between the leather or fabric and the hard substrate when peeled at 90°.

[0004] However, in actual use, it was found that if the substrate to be tested is a hard substrate such as glass or exterior trim that is not easily deformed, the fluctuation, range, and test result error of the "force-displacement curve" obtained after the test are very small; while if the substrate to be tested is a soft substrate such as TPE that is easily deformed, the fluctuation, range, and test result error of the "force-displacement curve" obtained after the test are large, thus failing to truly reflect the performance of the substrate. Summary of the Invention

[0005] The technical problem to be solved by the present invention is: how to provide a substrate peeling force detection tool and a detection method to improve the detection accuracy of soft substrates.

[0006] In order to solve the above technical problems, the technical solution adopted by the present invention is: A substrate peeling force testing tool comprises a tensile testing machine chuck and a base, wherein the base is provided with a film placing table; In the Y-axis direction, the film placing table is provided with a pressing device and a locking assembly in sequence; The pressing device includes at least two pressing parts spaced apart in the X-axis direction; The locking assembly can lock the pressing portion of the pressing device and press it against the placement surface of the sheet placing table.

[0007] In a possible implementation manner, the pressing device includes a turning member, a connecting member and a pressing assembly; The pressing assembly is connected to the movable portion of the flip member via the connecting member; The movable portion of the turning member can drive the pressing assembly to turn over.

[0008] In a possible implementation manner, the pressing assembly includes a first slide rail, a second slide rail, a first pressing piece, a second pressing piece, and an adjusting piece; The first slide rail and the second slide rail are both arranged on the connecting member; The length direction of the first slide rail and the length direction of the second slide rail are both parallel to the X-axis direction; The first pressing member and the second pressing member are slidably connected to the first slide rail and the second slide rail respectively; The adjusting member can drive the first pressing member and the second pressing member to move relative to each other in the X-axis direction.

[0009] In a possible implementation manner, the first binder includes a first rack portion and a first binder bar; The second binder includes a second rack portion and a second binder bar; The first binder bar is slidably connected to the first slide rail via the first rack portion; The second binder bar is slidably connected to the second slide rail via the second rack portion; The length direction of the first binder bar and the length direction of the second binder bar are both parallel to the Y axis; The adjusting member includes an adjusting gear; The first rack portion and the second rack portion are both engaged with the adjusting gear.

[0010] In a possible implementation manner, a scale is provided on the first rack portion and / or the second rack portion.

[0011] In one possible implementation, an X-guide rail is further included; The film placing platform is slidably connected to the base via the X-guide rail.

[0012] In one possible implementation, it further includes a Y-guide rail; The film placing platform is slidably connected to the movable part of the Y guide rail and the X guide rail.

[0013] In a possible implementation, the damping force on the X-guide rail is greater than the damping force on the Y-guide rail.

[0014] In a possible implementation, the locking assembly includes a flip buckle and a support member; The flip buckle is hinged to the sheet placing platform through the support member, so that the flip buckle and the material pressing part can be pressed against each other or separated from each other.

[0015] In a possible embodiment, long holes are respectively formed at both ends of the flip buckle; The long holes are distributed along the height direction of the flip buckle, and the support member can be located at different positions in the long holes as the position of the flip buckle changes.

[0016] The present invention also provides a substrate peeling force detection method, which is applied to the above-mentioned substrate peeling force detection tool, comprising the following steps: S1. Place the prepared substrate on the sheet placing table and turn down the pressing device until the pressing part of the pressing device contacts the surface of the substrate; S2, flip up the locking assembly, and lock the pressing device in the Z-axis direction through the locking assembly; S3. Clamp the tape on the position to be tested of the substrate with the chuck of the tensile testing machine, and pull the substrate along the Z-axis direction.

[0017] The beneficial effect of the present invention is that, compared with the existing substrate peeling force detection tooling, the substrate peeling force detection tooling provided by the present invention improves the pressing part of the pressing device to be spaced along the X-axis direction, so that the soft substrate to be tested can always be close to the sheet placing table when subjected to a vertical upward peeling force, thereby avoiding the deformation of the soft substrate causing the detection result to be affected. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 Schematic diagram of the structure of a substrate peeling force detection tool according to a specific embodiment of the present invention; Figure 2 A schematic structural diagram of a substrate peeling force detection tool from another angle according to a specific embodiment of the present invention; Description of labels: 1. Base; 2. Film table; 3. Pressing device; 31. Turning member; 32. Connecting member; 33. Pressing assembly; 331. First slide rail; 332. Second slide rail; 333. First pressing member; 3331. First rack; 3332. First pressing strip; 334. Second pressing member; 3341. Second rack; 3342. Second pressing strip; 335. Adjusting member; 3351. Adjusting gear; 336. Scale; 4. Flip button; 5. X-guide rail; 6. Y guide rail; 7. Soft substrate; 8. Tape. DETAILED DESCRIPTION

[0019] To illustrate the technical content, achieved objectives and effects of the present invention in detail, the following description is given in conjunction with the embodiments and accompanying drawings.

[0020] When testing hard, non-deformable substrates like glass and exterior trim, existing substrate peel force testing tooling produces a "force-displacement curve" with very small fluctuations, ranges, and test result errors. However, when testing soft, easily deformable substrates like TPE, the resulting "force-displacement curve" exhibits large fluctuations, ranges, and test result errors, making it unable to truly reflect the substrate's performance.

[0021] Based on this, please refer to Figures 1 to 2 A substrate peeling force testing tool is proposed, including a tensile testing machine chuck and a base 1, on which a film placing table 2 is provided; in the Y-axis direction, a pressing device 3 and a locking assembly are sequentially provided on the film placing table 2; the pressing device 3 includes at least two pressing parts spaced apart in the X-axis direction; the locking assembly can lock the pressing part of the pressing device 3 and press it against the placing surface of the film placing table 2.

[0022] Specifically, the length direction of the soft substrate 7 to be tested and the arrangement direction of the tape 8 for generating peeling force provided on the soft substrate 7 are both parallel to the Y-axis direction; thereby ensuring that when the chuck of the tensile testing machine drives the tape 8 to be pulled upward along the Z-axis direction and gradually separates the tape 8 from the substrate along the Y-axis direction, both sides of the connection between the tape 8 and the substrate can always be tightly pressed by the pressing parts arranged at intervals along the X-axis direction, thereby avoiding the problem of deformation of the soft substrate 7 affecting the test results. The locking assembly includes a flip buckle 4 and a support member; the flip buckle 4 is a U-shaped structure; long holes are respectively provided at both ends of the flip buckle 4; the long holes are distributed along the height direction of the flip buckle 4, and the support member can be in different positions in the long holes as the position of the flip buckle 4 changes; the flip buckle 4 is hinged to the film placing table 2 through the support member, so that the flip buckle 4 can be pressed against or separated from the pressing part; thereby realizing the locking and unlocking of the pressing device 3. In order to avoid the flip buckle 4 in the locked state from being disengaged due to external force, a corresponding locking device can also be provided to fasten the flip buckle 4, such as the flip buckle 4 and the film placing table 2 can be connected by a locking screw.

[0023] It can be understood that the substrate peeling force detection tooling of the present invention is different from the existing substrate peeling force detection tooling. The existing substrate peeling force detection only sets corresponding clamping structures at both ends of the length direction of the substrate to be tested. Therefore, when the adhesion position of the tape 8 and the soft substrate 7 moves to the middle of the soft substrate 7, the soft substrate 7 is relatively soft in texture and the middle part of the soft substrate 7 is not constrained in the Z-axis direction, so it is easy to bend and deform. The present application improves the pressing part of the pressing device 3 to a spaced design along the X-axis direction, that is, the two ends of the substrate to be tested in the width direction are pressed, so that the soft substrate 7 to be tested is always close to the sheet placing table 2 when subjected to a vertical upward peeling force, thereby avoiding the deformation of the soft substrate 7 and affecting the test results.

[0024] In some embodiments, the pressing device 3 includes a flip member 31, a connecting member 32, and a pressing assembly 33; the pressing assembly 33 is connected to the movable portion of the flip member 31 via the connecting member 32; the movable portion of the flip member 31 can drive the pressing assembly 33 to rotate with the X-axis as the rotation axis. Specifically, the flip member 31 is any commercially available device that can drive an object to rotate and has its own self-locking function, such as a pressure clamp. This design makes specific modifications to the component structure of the pressing device 3, thereby providing structural support for the pressing device 3 to flip and press the substrate to be tested, thereby avoiding the problem of deformation of the substrate during the test due to insufficient pressure applied to the substrate, which affects the test results.

[0025] In some embodiments, the pressing assembly 33 includes a first slide rail 331, a second slide rail 332, a first pressing piece 333, a second pressing piece 334 and an adjusting piece 335; the first slide rail 331 and the second slide rail 332 are both arranged on the connecting piece 32; the length direction of the first slide rail 331 and the length direction of the second slide rail 332 are both parallel to the X-axis direction; the first pressing piece 333 and the second pressing piece 334 are slidably connected to the first slide rail 331 and the second slide rail 332 respectively; the adjusting piece 335 can drive the first pressing piece 333 and the second pressing piece 334 to move relative to each other in the X-axis direction; the first pressing piece 333 includes The first pressing piece 3331 includes a first rack portion 3331 and a first pressing strip 3332; the second pressing piece 334 includes a second rack portion 3341 and a second pressing strip 3342; the first pressing strip 3332 is slidably connected to the first slide rail 331 through the first rack portion 3331; the second pressing strip 3342 is slidably connected to the second slide rail 332 through the second rack portion 3341; the length direction of the first pressing strip 3332 and the length direction of the second pressing strip 3342 are both parallel to the Y axis; the adjusting piece 335 includes an adjusting gear 3351; the first rack portion 3331 and the second rack portion 3341 are both engaged with the adjusting gear 3351. This design makes specific improvements to the composition structure of the pressing assembly 33, so that the pressing assembly 33 can always press the soft substrate tightly during the detection process, avoiding bending deformation of the soft substrate, which in turn affects the detection structure; at the same time, a first slide rail 331 and a second slide rail 332 are further provided on the connecting member 32, so that the first pressing member 333 and the second pressing member 334 can be synchronously moved relative to each other along the X-axis direction under the drive of the adjusting member 335, so that the staff can adjust the spacing between the first pressing strip 3332 and the second pressing strip 3342 according to the position and size of the tape on the soft substrate, thereby improving the pressing accuracy of the pressing assembly 33.

[0026] In some embodiments, a scale 336 is provided on the first rack portion 3331 and / or the second rack portion 3341. This design allows the operator to more intuitively observe the change in the distance between the first pressing bar 3332 and the second pressing bar 3342, thereby enabling the operator to quickly and accurately move the first pressing bar 3332 and the second pressing bar 3342 to the designated pressing position, thereby ensuring the pressing quality and improving the positioning efficiency of the soft substrate.

[0027] In some embodiments, there are at least two pressing assemblies 33, spaced apart on the connector 32 in the X-axis direction. When the soft substrate to be inspected is large, multiple inspection locations are required. This design improves the number of pressing assemblies 33 to ensure that after the soft substrate is positioned, the pressing assemblies 33 can complete the pressing work at all inspection locations at once, thereby further improving overall pressing accuracy and efficiency.

[0028] In some embodiments, the aforementioned substrate peel force testing tool further includes an X-axis guide rail 5, through which the substrate placement platform 2 is slidably connected to the base 1. When testing a large soft substrate or a large number of locations, this design effectively increases the X-axis freedom of the substrate placement platform 2, allowing operators to adjust the test positions one by one to the designated test position, thereby efficiently completing the peel force test.

[0029] In some embodiments, the aforementioned substrate peeling force testing fixture further includes a Y-guide rail 6; the film placement platform 2 is slidably connected to the movable portion of the X-guide rail 5 via the Y-guide rail 6. Because the tensile testing machine chuck can only move vertically along the Z-axis, if the film placement platform 2 lacks Y-axis freedom when the adhesive tape 8 adhered to the substrate is pulled, the connection between the adhesive tape 8 and the substrate will continuously change along the Y-axis, causing the angle between the removed adhesive tape 8 and the substrate to gradually decrease below 90°, thereby preventing the final test results from truly reflecting the performance of the substrate.

[0030] In some embodiments, the damping force of the X-guide rail 5 is greater than the damping force of the Y-guide rail 6. During the peel force test, the film placement table 2 will slide on the Y-guide rail 6 along the Y-axis due to the force. To prevent the film placement table 2 from moving along the X-axis on the X-guide rail 5 due to fluctuations during the test process, which would affect the final test results, the damping force of the X-guide rail 5 is required to be greater than the damping force of the Y-guide rail 6. This effectively solves this problem, thereby ensuring the flexibility of the equipment and improving the overall test accuracy.

[0031] In some embodiments, there are at least two X-guide rails 5 , spaced apart on the base 1 in the X-axis direction. This design optimizes the number of X-guide rails 5 , thereby further enhancing the damping force of the film placement platform 2 in the X-axis direction, thereby better resisting external interference and preventing unnecessary errors caused by the film placement platform 2 moving in the X-axis direction during the inspection process.

[0032] In some embodiments, a substrate peeling force detection method is further provided, which is applied to any of the above-mentioned substrate peeling force detection tools, comprising the following steps: S1. Place the prepared substrate on the sheet placing table 2 and turn down the pressing device 3 until the pressing part of the pressing device 3 contacts the surface of the substrate; S2, flip up the locking assembly and lock the pressing device 3 in the Z-axis direction through the locking assembly; S3, clamping the tape 8 on the position to be tested of the substrate by the chuck of the tensile testing machine, and pulling the substrate along the Z-axis direction; S4. After completing the inspection work of one inspection position, reset the tensile testing machine chuck, and repeat step S3 to complete the inspection work of the remaining inspection positions in sequence along the X-axis direction.

[0033] This design provides a complete set of substrate peeling force testing steps, which not only prevents the soft substrate 7 from bending and deforming due to the vertical upward pulling force, thereby affecting the final test results, but also effectively improves the overall test efficiency.

[0034] Please refer to Figures 1 to 2 , embodiment 1 of the present invention is: A substrate peeling force testing tool comprises a tensile testing machine chuck and a base 1, wherein a film placing table 2 is provided on the base 1; a pressing device 3 and a locking assembly are sequentially provided on the film placing table 2 in the Y-axis direction; the pressing device 3 comprises two pressing parts spaced apart in the X-axis direction; and the locking assembly enables the pressing part of the pressing device 3 to be locked and pressed against the placement surface of the film placing table 2.

[0035] In this embodiment, the locking assembly includes a flip buckle 4 and a support member; the flip buckle 4 is a U-shaped structure; long holes are respectively provided at both ends of the flip buckle 4; the long holes are distributed along the height direction of the flip buckle, and the support member can be in different positions in the long holes as the position of the flip buckle 4 changes; the flip buckle 4 is hinged to the film placing table 2 through the support member, so that the flip buckle 4 can be pressed against or separated from the pressing part.

[0036] In this embodiment, the pressing device 3 includes a flip member 31, a connecting member 32 and a pressing assembly 33; the pressing assembly 33 is connected to the movable part of the flip member 31 through the connecting member 32; the movable part of the flip member 31 can drive the pressing assembly 33 to rotate with the X-axis as the rotation axis.

[0037] In this embodiment, the pressing assembly 33 includes a first slide rail 331, a second slide rail 332, a first pressing piece 333, a second pressing piece 334 and an adjusting piece 335; the first slide rail 331 and the second slide rail 332 are both arranged on the connecting piece 32; the length direction of the first slide rail 331 and the length direction of the second slide rail 332 are both parallel to the X-axis direction; the first pressing piece 333 and the second pressing piece 334 are slidably connected to the first slide rail 331 and the second slide rail 332 respectively; the adjusting piece 335 can drive the first pressing piece 333 and the second pressing piece 334 to move relative to each other in the X-axis direction; the first pressing piece 333 includes The first pressing member 3331 includes a first rack portion 3331 and a first pressing strip 3332; the second pressing member 334 includes a second rack portion 3341 and a second pressing strip 3342; the first pressing strip 3332 is slidably connected to the first slide rail 331 through the first rack portion 3331; the second pressing strip 3342 is slidably connected to the second slide rail 332 through the second rack portion 3341; the length direction of the first pressing strip 3332 and the length direction of the second pressing strip 3342 are both parallel to the Y axis; the adjusting member 335 includes an adjusting gear 3351; the first rack portion 3331 and the second rack portion 3341 are both engaged with the adjusting gear 3351.

[0038] In this embodiment, a scale 336 is provided on the first rack portion 3331 and / or the second rack portion 3341 .

[0039] In this embodiment, there are three pressing assemblies 33 ; in the X-axis direction, the pressing assemblies 33 are arranged on the connecting member 32 at intervals.

[0040] In this embodiment, the substrate peeling force detection tool further includes an X-guide rail 5 ; the film placing table 2 is slidably connected to the base 1 via the X-guide rail 5 .

[0041] In this embodiment, the substrate peeling force detection tool further includes a Y-guide rail 6 ; the film placement table 2 is slidably connected to the movable portion of the X-guide rail 5 via the Y-guide rail 6 .

[0042] In this embodiment, the damping force on the X guide rail 5 is greater than the damping force on the Y guide rail 6 .

[0043] In this embodiment, the number of the X-guide rails 5 is two; in the X-axis direction, the X-guide rails 5 are arranged on the base 1 at intervals.

[0044] The second embodiment of the present invention is: A substrate peeling force detection method, applied to any of the above substrate peeling force detection tools, comprises the following steps: S1. Place the prepared substrate on the sheet placing table 2 and turn down the pressing device 3 until the pressing part of the pressing device 3 contacts the surface of the substrate; S2, flip up the locking assembly and lock the pressing device 3 in the Z-axis direction through the locking assembly; S3, clamping the tape 8 on the position to be tested of the substrate by the chuck of the tensile testing machine, and pulling the substrate along the Z-axis direction; S4. After completing the inspection work of one inspection position, reset the tensile testing machine chuck, and repeat step S3 to complete the inspection work of the remaining inspection positions in sequence along the X-axis direction.

[0045] The working principle of the present invention is as follows: first, the staff cuts out a substrate of a specific size according to the design requirements and adheres the corresponding tape 8 to the specified position of the substrate; then, the prepared soft substrate 7 is placed on the sheet placing table 2; then, the turning member 31 is driven to make the pressing assembly 33 approach the soft substrate 7 until the first pressing bar 3332 and the second pressing bar 3342 initially contact the surface of the soft substrate 7; then, the adjusting member 335 is rotated to make the adjusting gear 3351 synchronously drive the first rack portion 3 331 and the second rack portion 3341 make the first pressing bar 3332 and the second pressing bar 3342 move relative to each other in the X-axis direction until the first pressing bar 3332 and the second pressing bar 3342 move to the specified position, and then the first pressing bar 3332 and the second pressing bar 3342 are fastened to the sheet placing table 2 by the flip buckle 4 to complete the positioning of the soft substrate 7; finally, the adhesive tape 8 is clamped by the chuck of the tensile testing machine and driven to pull the adhesive tape 8 upward along the Z-axis direction, and the corresponding peeling force detection work can be carried out.

[0046] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent transformations made using the contents of the present invention's description and drawings, or directly or indirectly applied in related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A substrate peeling force testing tool, comprising a tensile testing machine chuck and a base, characterized in that: The base is provided with a film placing table; In the Y-axis direction, the film placing table is provided with a pressing device and a locking assembly in sequence; The pressing device includes at least two pressing parts spaced apart in the X-axis direction; The locking assembly can lock the pressing portion of the pressing device and press it against the placement surface of the sheet placing table.

2. The substrate peeling force detection tool according to claim 1, characterized in that: The pressing device includes a turning piece, a connecting piece and a pressing assembly; The pressing assembly is connected to the movable portion of the flip member via the connecting member; The movable portion of the turning member can drive the pressing assembly to turn over.

3. The substrate peeling force detection tool according to claim 2, characterized in that: The pressing assembly includes a first slide rail, a second slide rail, a first pressing piece, a second pressing piece and an adjusting piece; The first slide rail and the second slide rail are both arranged on the connecting member; The length direction of the first slide rail and the length direction of the second slide rail are both parallel to the X-axis direction; The first pressing member and the second pressing member are slidably connected to the first slide rail and the second slide rail respectively; The adjusting member can drive the first pressing member and the second pressing member to move relative to each other in the X-axis direction.

4. The substrate peeling force detection tool according to claim 3, characterized in that: The first binder includes a first rack portion and a first binder bar; The second binder includes a second rack portion and a second binder bar; The first binder bar is slidably connected to the first slide rail via the first rack portion; The second binder bar is slidably connected to the second slide rail via the second rack portion; The length direction of the first binder bar and the length direction of the second binder bar are both parallel to the Y axis; The adjusting member includes an adjusting gear; The first rack portion and the second rack portion are both engaged with the adjusting gear.

5. The substrate peeling force detection tool according to claim 4, characterized in that: The first rack portion and / or the second rack portion is provided with a scale.

6. The substrate peeling force detection tool according to claim 1, characterized in that: Also includes X-guide rails; The film placing platform is slidably connected to the base via the X-guide rail.

7. The substrate peeling force detection tool according to claim 6, characterized in that: Also includes Y guide rails; The film placing platform is slidably connected to the movable part of the Y guide rail and the X guide rail.

8. The substrate peeling force detection tool according to claim 7, characterized in that: The damping force on the X guide rail is greater than the damping force on the Y guide rail.

9. The substrate peeling force detection tool according to claim 1, characterized in that: The locking assembly includes a flip buckle and a support member; The flip buckle is hinged to the sheet placing platform through the support member, so that the flip buckle and the material pressing part can be pressed against each other or separated from each other.

10. The substrate peeling force detection tool according to claim 9, characterized in that: Long holes are respectively formed at both ends of the flip buckle; The long holes are distributed along the height direction of the flip buckle, and the support member can be located at different positions in the long holes as the position of the flip buckle changes.

11. A method for detecting the peeling force of a substrate, applied to the substrate peeling force detection tool as claimed in any one of claims 1 to 10, characterized in that: The following steps are involved: S1. Place the prepared substrate on the sheet placing table and turn down the pressing device until the pressing part of the pressing device contacts the surface of the substrate; S2, flip up the locking assembly, and lock the pressing device in the Z-axis direction through the locking assembly; S3. Clamp the tape on the position to be tested of the substrate with the chuck of the tensile testing machine, and pull the substrate along the Z-axis direction.

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