CN115575313A

CN115575313A - Device for testing binding force of paint layer by dry adhesive tape method

Info

Publication number: CN115575313A
Application number: CN202211169083.8A
Authority: CN
Inventors: 王一寒; 闫忠伟; 石群; 张佳; 马刚
Original assignee: Shenyang Aircraft Industry Group Co Ltd
Current assignee: Shenyang Aircraft Industry Group Co Ltd
Priority date: 2022-09-26
Filing date: 2022-09-26
Publication date: 2023-01-06

Abstract

The invention provides a device for testing the binding force of a paint layer by a dry adhesive tape method, and belongs to the technical field of surface processing. The device comprises a handle, a pressure comprehensive indicator, a support, a length regulator, a spring, a roller, a spring assembly, a sliding switch, an adhesive tape clamp, a rebound switch and an adhesive tape fixing rod. The invention has novel structure and convenient operation, and can observe the applied rolling pressure; meanwhile, test result differences caused by differences of hand tearing strength, speed and angle of different testers are avoided. The invention has reasonable design, can carry out quantitative and standardized tests and ensure the stability and consistency of test results.

Description

Device for testing binding force of paint layer by dry adhesive tape method

Technical Field

The invention belongs to the technical field of surface processing, and relates to a device for testing the binding force of a paint layer by a dry tape method.

Background

Aircraft painting is the coating of aircraft surfaces with special materials to meet certain protective requirements. The coating of the airplane not only aims at the beauty, but also has the practical effects of hiding and falsifying, ensuring high visibility (sign), adapting to airplane type tasks, eliminating visual fatigue, reflecting solar radiation and the like, paint layers of different coatings provide different performance guarantees for the airplane, and the quality of the paint layers directly influences various performances of the airplane. If the paint layer falls off, various properties of the body parts of the airplane can be seriously damaged.

Therefore, the paint adhesion is one of the most important inspection indicators of paint performance. At present, most of paint film inspection methods on industrial production lines are dry tape methods. The adhesive tape is rolled at the bonding part by the self weight of the rubber roller. When the examined sample part is not suitable for the roller, the adhesive tape is directly pressed by a finger. After pressing was completed, one end of the tape was pulled and the tape was quickly torn off with a force perpendicular to the surface of the sample. The test area and the adhesive surface of the tape were visually inspected to see whether or not the paint film was peeled off.

The existing method for testing the bonding force of the dry adhesive tape is fully manual operation, and the operations from adhesive tape pasting, compacting and adhesive tape tearing are manually operated by operators. The dynamics of compaction sticky tape, the angle, speed, the dynamics of tearing the sticky tape all receive operator human factor to influence, can't accomplish accurate, unified. Therefore, the device provided by the invention can reduce the influence of human factors in the process of the adhesive tape bonding force inspection method, strictly control the bonding force of a paint film, and greatly improve the accuracy and stability of adhesive tape bonding force inspection.

Disclosure of Invention

The invention aims to provide a device for testing the binding force of a paint layer by a dry tape method, which can apply pressure quantitatively and realize high repeatability and standardization of a testing process.

The technical scheme of the invention is as follows:

a device for testing the binding force of a paint layer by a dry adhesive tape method comprises a handle 1, a pressure comprehensive indicator 2, a support 3, a length regulator 7, a spring 8, a roller 9, a spring assembly 10, a sliding switch 11, an adhesive tape clamp 12, a rebound switch 13, a resistance pad 14, a protection pad 15 and an adhesive tape fixing rod 16.

The handle 1 is made of stainless steel coated with anti-slip silica gel and is used for controlling the device and applying force when an operator operates the device.

The pressure integration indicator 2 is used for accurately displaying the pressure applied during the test and accurately displaying the value to 0.01N.

The support 3 is made of high-hardness tool steel and comprises a support arm 4, a U-shaped support arm 5 and a swinging shaft 6; an integral mounting bracket is provided for other components of the entire testing device. The U-shaped support arm 5 is of a U-shaped support structure integrally, the middle part of the U-shaped support arm is connected with the upper part of the support arm 4 through a swinging shaft 6, the top end of the support arm 4 is connected with the handle 1, and the support arm 4 is driven to swing around the swinging shaft 6 through the swinging handle 1; the middle part of the support arm 4 is provided with a pressure comprehensive indicator 2, and the lower end of the support arm 4 is connected with a length regulator 7. The bottom end of the length regulator 7 is connected with a roller 9 through a spring 8; the length adjuster 7 can adjust the distance between the roller 9 and the surface of a product to be tested, the swing shaft 6 can enable the support arm 4 to swing on the inner side of the U-shaped support arm 5, and the length adjuster can be matched with the spring 8 to ensure that the stroke of the roller can cover the whole testing area; meanwhile, the position of the roller 9 is adjusted by the length adjuster 7, so that the roller 9 can be prevented from hindering the adhesive tape from being torn off the surface of the product quickly.

Two adhesive tape clips 12 are respectively connected to the inner sides of the two branches of the U-shaped support arm 5 through a spring assembly 10 and a slide switch 11.

The spring assembly 10 consists of a spring, an upper snap ring, a lower snap ring and a rebound switch 13; wherein, the spring is sleeved on one branch of the U-shaped support arm 5, the upper end of the spring is fixed on the U-shaped support arm 5 through an upper snap ring, the lower end of the spring is connected with a lower snap ring, and the lower snap ring is matched and locked with a bayonet lock on the U-shaped support arm 5; be equipped with rebound switch 13 and adhesive tape holder 12 on the snap ring down, through pressing rebound switch 13, make snap ring down drive adhesive tape holder 12 and kick-back fast under the effect of spring force, provide a vertically power for the sticky tape.

A strip-shaped groove is formed in the other branch of the U-shaped support arm 5, and the slide switch 11 is matched with the strip-shaped groove to lock and fix the testing position of the adhesive tape clamp 12; when the slide switch 11 is released, a certain resilient space is provided for the side tape clip 12.

The adhesive tape clip 12 is made of stainless steel and has a clip structure; resistance pads 14 are arranged on the inner sides of the two clamping faces, carborundum is selected, and friction is increased to ensure clamping firmness; the clamping surface end is equipped with protection pad 15, for fluoroplastics material, when the protection awaits measuring the test product surface, reduces the resistance of pull on it when the sticky tape installation. The outer sides of the two adhesive tape clamps 12 are respectively provided with an adhesive tape fixing rod 16 through a lug, and the adhesive tape fixing rods 16 can rotate to realize the tightening of the adhesive tape used in the test.

The invention has the beneficial effects that: the invention has novel structure and convenient operation, and can observe the applied rolling pressure; meanwhile, test result differences caused by differences of hand tearing strength, speed and angle of different testers are avoided. The invention has reasonable design, can carry out quantitative and standardized tests and ensure the stability and consistency of test results.

Drawings

FIG. 1 is a schematic diagram of a device for testing the binding force of a paint layer by a dry adhesive tape method.

Fig. 2 is a schematic sectional view of the length adjuster.

In the figure: 1, a handle; 2 a pressure integrated indicator; 3, a bracket; 4, supporting arms; 5U-shaped support arms; 6 a swing shaft; 7 a length adjuster; 8, a spring; 9, rolling wheels; 10 a spring assembly; 11 a slide switch; 12, clamping an adhesive tape; 13 a rebound switch; 14 a resistance pad; 15 a protective pad; 16 tape to secure the rods.

Detailed Description

The following examples and drawings are included to further explain the detailed description of the invention and are not intended to limit the invention.

Fig. 1 shows a device for testing the bonding force of a paint layer by a dry adhesive tape method, which comprises a handle 1, a pressure comprehensive indicator 2, a bracket 3, a length regulator 7, a spring 8, a roller 9, a spring assembly 10, a sliding switch 11, an adhesive tape clamp 12, a rebound switch 13, a resistance pad 14, a protection pad 15 and an adhesive tape fixing rod 16.

The support 3 consists of a support arm 4, a U-shaped support arm 5 and a swinging shaft 6; an integral mounting bracket is provided for other components of the entire testing device. The U-shaped support arm 5 is of a U-shaped support structure integrally, the middle part of the U-shaped support arm is connected with the upper part of the support arm 4 through a swinging shaft 6, the top end of the support arm 4 is connected with the handle 1, and the support arm 4 is driven by the handle 1 to swing around the swinging shaft 6; the middle part of the support arm 4 is provided with a pressure comprehensive indicator 2, and the lower end of the support arm 4 is connected with a length regulator 7. The bottom end of the length regulator 7 is connected with a roller 9 through a spring 8; the length adjuster 7 can adjust the distance between the roller 9 and the surface of a product to be tested, the swing shaft 6 can enable the support arm 4 to swing on the inner side of the U-shaped support arm 5, and the length adjuster can be matched with the spring 8 to ensure that the stroke of the roller can cover the whole testing area; meanwhile, the position of the roller 9 is adjusted by the length adjuster 7, so that the roller 9 can be prevented from hindering the adhesive tape from being torn off the surface of the product quickly.

The spring assembly 10 consists of a spring, an upper clamping ring, a lower clamping ring and a rebound switch 13; wherein, the spring is sleeved on one branch of the U-shaped support arm 5, the upper end of the spring is fixed on the U-shaped support arm 5 through an upper snap ring, the lower end of the spring is connected with a lower snap ring, and the lower snap ring is matched and locked with a bayonet lock on the U-shaped support arm 5; be equipped with rebound switch 13 and adhesive tape holder 12 on the snap ring down, through pressing rebound switch 13, make snap ring down drive adhesive tape holder 12 and kick-back fast under the effect of spring force, provide a vertically power for the sticky tape.

The other branch of the U-shaped support arm 5 is provided with a strip-shaped groove, and the sliding switch 11 is matched with the strip-shaped groove to lock and fix the testing position of the adhesive tape clamp 12.

The adhesive tape clip 12 is of a clip structure; the inner sides of the two clamping surfaces are provided with resistance pads 14, and the ends of the clamping surfaces are provided with protective pads 15. The outer sides of the two adhesive tape clips 12 are respectively provided with an adhesive tape fixing rod 16 through a lug piece, and the adhesive tape fixing rods 16 can rotate to realize the adhesive tape used in the tightening test.

The testing method of the device for testing the paint layer binding force by adopting the dry adhesive tape method comprises the following steps:

1) And (5) cleaning the surface of the product to be detected, and scribing according to related requirements if the surface has scribing requirements.

2) The adhesive tape clip 12 is pulled to the top end and fixed through the spring assembly 10; the tape holder 12 on the other side is pulled to the top of the bar-shaped groove and fixed in position by the slide switch 11.

3) The tape clips 12 are opened and the resistance pad 14 is inspected for any foreign matter, if necessary for cleaning.

4) After being wound on the tape fixing bar 16 on either side for at least 1 week, the tape is wound into the tape holder 12 from the side close to the bracket 3, taking note that the tape faces the side away from the bracket 3.

5) The adhesive tape is pulled to the other side of the U-shaped support arm 5, extends into the adhesive tape clamp 12 from one end with the protective pad 15, and extends out to be partially wound on the adhesive tape fixing rod 16 at the side.

6) Rotating the adhesive tape fixing rods 16 at the two sides to tighten the adhesive tapes; the tape clip 12 is pressed closed.

7) The handle 1 of the testing device is held by hand, and the mounted adhesive tape is attached to a specified area of a product to be tested; swinging the handle 1 to make the roller 9 face the tape clamp 12 on any side; the length adjuster 7 is rotated to bring the roller 9 into contact with the tape holder 12 and the tape.

8) The handle 1 is pressed by a force vertical to the surface of the product to be detected, and the roller 9 is driven to roll on the adhesive tape. At this time, the pressure comprehensive indicator 2 displays the pressure value, and the pressing degree can be adjusted according to the requirement.

9) Rolling for a specified number of times, and opening the sliding switch 11 to enable the sliding switch to be in a free state; the length adjuster 7 is rotated to move the roller 9 away from the tape.

10 The side tape clips 12 are rapidly rebounded in a direction perpendicular to the surface of the test product when the rebound switch 13 is pressed, carrying the tape rapidly torn off the surface of the product.

11 The tested area and the adhesive surface of the tape were visually inspected for peeling of the paint film.

12 To end the test, the tape was removed from the apparatus.

Claims

1. A device for testing the binding force of a paint layer by a dry adhesive tape method is characterized by comprising a handle (1), a pressure comprehensive indicator (2), a support (3), a length regulator (7), a spring (8), a roller (9), a spring assembly (10), a sliding switch (11), an adhesive tape clamp (12), a rebound switch (13), a resistance pad (14), a protection pad (15) and an adhesive tape fixing rod (16);

the support (3) consists of a support arm (4), a U-shaped support arm (5) and a swinging shaft (6); the U-shaped support arm (5) is of a U-shaped support structure integrally, the middle part of the U-shaped support arm is connected with the upper part of the support arm (4) through a swinging shaft (6), the top end of the support arm (4) is connected with the handle (1), and the support arm (4) is driven to swing around the swinging shaft (6) through the swinging handle (1); the middle part of the support arm (4) is provided with a pressure comprehensive indicator (2), and the lower end of the support arm (4) is connected with a length regulator (7); the bottom end of the length regulator (7) is connected with the roller (9) through a spring (8), and the length regulator (7) is used for regulating the distance between the roller (9) and the surface of a product to be tested;

the two adhesive tape clamps (12) are respectively connected to the inner sides of the two branches of the U-shaped support arm (5) through a spring assembly (10) and a sliding switch (11);

the spring assembly (10) is composed of a spring, an upper clamping ring, a lower clamping ring and a rebound switch (13); wherein, the spring is sleeved on one branch of the U-shaped support arm (5), the upper end of the spring is fixed on the U-shaped support arm (5) through an upper snap ring, the lower end of the spring is connected with a lower snap ring, and the lower snap ring is matched, locked and fixed with a bayonet lock on the U-shaped support arm (5); the lower clamping ring is provided with a rebound switch (13) and an adhesive tape clip (12), and the lower clamping ring drives the adhesive tape clip (12) to rebound rapidly under the action of the spring force by pressing the rebound switch (13) so as to provide a vertical force for the adhesive tape;

a strip-shaped groove is formed in the other branch of the U-shaped support arm (5), and the sliding switch (11) is matched with the strip-shaped groove to lock and fix the testing position of the adhesive tape clamp (12);

the adhesive tape clip (12) is of a clip structure; the outer sides of the two adhesive tape clamps (12) are respectively provided with an adhesive tape fixing rod (16) through a lug piece, and the adhesive tape fixing rods (16) can rotate to realize the tightening of the adhesive tape used for the test.

2. The device for testing the bonding force of the paint layer by the dry adhesive tape method according to claim 1, wherein resistance pads (14) are arranged on the inner sides of the two clamping surfaces of the adhesive tape clamp (12), so that friction force is increased to ensure the clamping firmness;

the end head of the clamping surface is provided with a protection pad (15), so that the surface of a product to be tested is protected, and the resistance of pulling the adhesive tape on the clamping surface during installation is reduced.

3. A dry-tape process paint adhesion test device according to claim 1 or 2, wherein the pressure combination indicator (2) is accurate to 0.01N.