Viscosity testing device

Abstract

A viscosity testing device comprises a testing plate, a storage box, a conveying pipe, a receiving pipe and a vacuum system, the testing plate is obliquely arranged above the storage box, a fixing area for fixing a to-be-tested adhesive film is arranged on the testing plate, a through hole is formed in the bottom of the testing plate, one end of the receiving pipe is in butt joint with the through hole, and the other end of the receiving pipe is communicated with the storage box; an inlet of the conveying pipe is communicated with the containing box, an outlet of the conveying pipe is formed in the top of the testing plate, the vacuum system is in butt joint with the conveying pipe, the vacuum system sucks out the balls in the containing box through the conveying pipe and enables the balls to roll out from the outlet of the conveying pipe, and the balls roll downwards along the testing plate to pass through the fixing area. The viscosity testing device provided by the utility model can avoid the problems of ball loss and the like, and is high in viscosity testing efficiency.

Description

Technical Field

[0001] This utility model relates to the field of material adhesion testing technology, and in particular to an adhesion testing device. Background Technology

[0002] An initial tack tester, often referred to as an initial tack strength tester or initial tack meter, is a specialized device used to measure the adhesive properties of adhesives, tapes, coatings, or bonding materials upon initial contact. These testers play a crucial role in many industries, particularly packaging, construction, automotive manufacturing, and electronics, where high standards for material adhesion are often required. Initial tack refers to the adhesive force a material generates upon initial contact. For adhesives, initial tack not only affects their performance during application but also directly impacts the quality and reliability of the final product. For example, in the packaging industry, poor initial tack can lead to separation of packaging materials during transportation and storage, resulting in product damage and increased transportation costs. In the construction industry, insufficient initial tack can lead to structural instability or shortened lifespan.

[0003] The common method for testing the initial tack of pressure-sensitive adhesive on reflective film is the rolling ball method. This method works by rolling a steel ball over the adhesive surface of the reflective film placed on an inclined plate. The initial tack is evaluated based on the maximum size of the steel ball that can be adhered to by the adhesive surface over a specified length. The specific procedure is as follows: During testing, a ball of a certain weight is placed on the surface of the material to be tested. By adjusting the angle between the ball and the surface, the ball begins to roll. The maximum static friction between the ball and the surface at this point is the initial tack of the material. By measuring the rolling angle and the weight of the ball, the initial tack value can be calculated. However, the initial tack tester used for testing reflective film is cumbersome to operate and prone to errors, mainly due to:

[0004] Firstly, during testing, the corresponding steel ball needs to be held with tweezers and placed on the platform. If the ball is not held during the transfer process, it may be lost. Since the steel balls are custom-made, once they are lost, subsequent tests cannot be performed, and a lot of time needs to be spent re-customizing them.

[0005] Secondly, after each test, the pressure-sensitive adhesive on the steel ball needs to be manually cleaned with solvent, and then it needs to be put back into the box with tweezers. This process is time-consuming and prone to errors that could result in the loss of the steel ball.

[0006] Third, when conducting tests, the reflective side of the reflective film is attached to the inclined plate with the adhesive side exposed. Because the reflective film has a certain degree of curvature, when manually attaching the reflective film to the inclined plate with masking tape, the adhesive is easily stuck to the surface of the inclined plate, causing contamination of the inclined plate.

[0007] Fourth, the initial adhesion test of the complete reflective film takes too long and is inefficient. Utility Model Content

[0008] In view of this, the present invention provides a viscosity testing device that can avoid problems such as ball drop or loss, and has high viscosity testing efficiency.

[0009] A viscosity testing device includes a test plate, a storage box, a delivery pipe, a receiving pipe, and a vacuum system. The test plate is inclinedly positioned above the storage box and has a fixing area for fixing the viscous film to be tested. The bottom of the test plate has a through hole. One end of the receiving pipe is connected to the through hole, and the other end of the receiving pipe is connected to the storage box. The inlet of the delivery pipe is connected to the storage box, and the outlet of the delivery pipe is located at the top of the test plate. The vacuum system is connected to the delivery pipe. The vacuum system sucks out the ball bearings from the storage box through the delivery pipe and causes the ball bearings to roll out from the outlet of the delivery pipe. The ball bearings roll down the test plate and pass through the fixing area.

[0010] In an embodiment of this utility model, the above-mentioned fixing area is provided with a plurality of adsorption holes, each of the adsorption holes being connected to the vacuum system, and the vacuum system adsorbing the adhesive film into the fixing area through each of the adsorption holes.

[0011] In an embodiment of this utility model, the test plate is provided with a plurality of through holes, each through hole being arranged sequentially along the inclined direction of the test plate, and the inner diameter of each through hole gradually increasing along the inclined direction of the test plate. Each through hole is used to receive balls of different diameters. The viscosity testing device includes a plurality of receiving tubes, each receiving tube being connected to each of the through holes.

[0012] In an embodiment of this utility model, the above-mentioned viscosity testing device further includes multiple baffles and multiple baffle drivers. Each baffle is movably installed in each of the through holes, and each baffle driver is connected to the above-mentioned test plate. Each baffle driver is connected to each of the baffles via a telescopic shaft, and each baffle driver is used to drive each of the baffles to open or close each of the through holes.

[0013] In an embodiment of this utility model, the above-mentioned viscosity testing device further includes a lifting driver, which is arranged in a vertical direction. The driving shaft of the lifting driver is connected to the bottom surface of the test plate, and the lifting driver is used to adjust the tilt angle of the test plate.

[0014] In an embodiment of this utility model, the above-mentioned viscosity testing device further includes a magnetic suction component and a cleaning mechanism. The magnetic suction component is disposed on the ball path between the fixed area and the through hole, and the magnetic suction component is used to magnetically attract the ball. The cleaning mechanism is disposed opposite to the test plate, and the cleaning mechanism is used to clean the ball attracted by the magnetic suction component.

[0015] In an embodiment of this utility model, the cleaning mechanism includes a mounting frame, a movable arm, a cleaning cotton, and a cleaning driver. The mounting frame is fixed to the test plate. The movable arm is arranged horizontally and movably connected to the mounting frame. The cleaning cotton is connected to the movable arm and is positioned opposite the magnetic suction assembly. The cleaning driver is connected to the mounting frame and is used to drive the movable arm to extend and retract so that the cleaning cotton cleans the ball bearing.

[0016] In an embodiment of this utility model, a telescopic driver is connected to the movable arm, and the movable arm is connected to the cleaning cotton through the telescopic driver. The telescopic driver is used to drive the cleaning cotton to move towards or away from the magnetic suction component.

[0017] In an embodiment of this utility model, the above-mentioned viscosity testing device further includes a placement frame and a switch driver. The placement frame is disposed on the test plate and is connected to the outlet of the delivery pipe. The placement frame is provided with a movable door. The switch driver is connected to the test plate. The switch driver is used to drive the movable door to open so that the ball rolls toward the fixed area and to drive the movable door to open and close so that the ball stays in the placement frame.

[0018] In an embodiment of this utility model, the inclined plate includes a fixed plate segment and a movable plate segment. The fixed area is disposed in the fixed plate segment, and the through hole is disposed in the movable plate segment. The fixed plate segment has a first groove and a second groove at both ends along its inclined direction. The first groove and the second groove are both disposed along the width direction of the fixed plate segment. The conveying pipe is slidably connected to the first groove via a first slide rail, and the movable plate segment is slidably connected to the second groove via a second slide rail. The outlet of the conveying pipe and the position of the movable plate segment are adjusted synchronously to perform adhesion tests on different areas of the adhesive film.

[0019] In an embodiment of this utility model, the fixed plate segment is connected to guide rails on opposite sides near the movable plate segment, the second slide groove extends to the two guide rails, and the movable plate segment can slide to the guide rails.

[0020] In an embodiment of this utility model, the above-mentioned adhesion testing device further includes a connecting frame, a scraper, and a scraper driver. The connecting frame is fixed on the test plate, the scraper is movably connected to the connecting frame via a connecting rod, and the scraper driver is connected to the connecting frame. The scraper driver is used to drive the connecting rod to move along the tilt direction of the test to push the ball away from the adhesive film.

[0021] In an embodiment of this utility model, the connecting frame includes a connecting shell, the connecting shell is provided with a wire hole, the wire hole is arranged along the inclined direction of the test plate, a plurality of rollers are provided in the wire hole, the connecting rod is arranged through the wire hole and contacts the rollers, the scraper driver is connected in the connecting shell, and the scraper driver drives the connecting rod to move through each of the rollers.

[0022] In an embodiment of this utility model, the connecting frame further includes a support rod and at least two guide rods. One end of the support rod is connected to the connecting shell. The support rod is provided with at least two first guide holes, and each guide rod is provided with a second guide hole. Each guide rod passes through each of the first guide holes, and the connecting rod passes through the second guide holes of each of the guide rods.

[0023] The ball bearings of this adhesiveness testing device are placed in a storage box. When an adhesiveness test is required, the ball bearings in the storage box can be transported to the top of the test plate through a vacuum system to start the adhesiveness test. There is no need to use tweezers to transfer the ball bearings, which avoids problems such as the ball bearings being lost or dropped during the transfer process. This not only saves the time cost of customizing the ball bearings, but also has high adhesiveness testing efficiency. Attached Figure Description

[0024] Figure 1 This is a three-dimensional structural diagram of the viscosity testing device of this application.

[0025] Figure 2 This is a side view of the viscosity testing device of this application.

[0026] Figure 3 This is a partial structural schematic diagram of the side panel of this application.

[0027] Figure 4 This is a partial structural schematic diagram of the viscosity testing device of this application. Detailed Implementation

[0028] The following specific embodiments illustrate the implementation of this application. Those skilled in the art can easily understand other advantages and effects of this application from the content disclosed in this specification.

[0029] In the following description, reference is made to the accompanying drawings, which illustrate several embodiments of the present application. It should be understood that other embodiments may also be used, and changes in mechanical composition, structure, electrical and operational aspects may be made without departing from the spirit and scope of the present application. The following detailed description should not be considered limiting, and the terminology used herein is for describing particular embodiments only and is not intended to limit the present application.

[0030] Although the terms first, second, etc., are used in some instances to describe various elements herein, these elements should not be limited by these terms. These terms are only used to distinguish one element from another.

[0031] Furthermore, as used herein, the singular forms “a,” “an,” and “the” are intended to include the plural forms as well, unless the context indicates otherwise. It should be further understood that the terms “comprising,” “including,” indicate the presence of a feature, step, operation, element, component, item, kind, and / or group, but do not exclude the presence, occurrence, or addition of one or more other features, steps, operations, elements, components, items, kinds, and / or groups. The terms “or” and “and / or” as used herein are interpreted as inclusive, or mean any one or any combination thereof. Thus, “A, B, or C” or “A, B, and / or C” means “any one of: A; B; C; A and B; A and C; B and C; A, B, and C.” Exceptions to this definition arise only when combinations of elements, functions, steps, or operations are inherently mutually exclusive in some way.

[0032] Figure 1 This is a three-dimensional structural diagram of the viscosity testing device of this application. Figure 2 This is a side view of the viscosity testing device of this application, as shown in the figure. Figure 1 and Figure 2 As shown, the adhesion testing device includes a test plate 11, a storage box 12, a delivery pipe 13, a receiving pipe 14, and a vacuum system 15. The test plate 11 is inclinedly disposed above the storage box 12. The test plate 11 has a fixing area 11a for fixing the adhesive film to be tested. The bottom of the test plate 11 has a through hole 101. One end of the receiving pipe 14 is connected to the through hole 101, and the other end of the receiving pipe 14 is connected to the storage box 12. The inlet of the delivery pipe 13 is connected to the storage box 12, and the outlet of the delivery pipe 13 is disposed at the top of the test plate 11. The vacuum system 15 is connected to the delivery pipe 13. The vacuum system 15 sucks out the ball bearings in the storage box 12 through the delivery pipe 13 and makes the ball bearings roll out from the outlet of the delivery pipe 13. The ball bearings roll down the test plate 11 and pass through the fixing area 11a. In this embodiment, the adhesive film is, for example, a reflective film or other thin film with an adhesive layer.

[0033] When performing an initial adhesion test on the adhesive film, the adhesive film is first fixed in the fixed area 11a of the test plate 11. A ball bearing is then drawn from the storage box 12 into the delivery tube 13 using the vacuum system 15. The ball bearing rolls out from the outlet of the delivery tube 13 and rolls along the inclined direction of the test plate 11 to the adhesion surface of the adhesive film. If the ball bearing rolls directly over the adhesion surface of the adhesive film, a smaller ball bearing is used in the next test, and the test is repeated until the ball bearing rolls down to near the bottom of the adhesion surface of the adhesive film. This indicates that the ball bearing of this size can represent the adhesion of the adhesive film. The ball bearing that rolls out of the adhesive film rolls into the through hole 101 and falls into the storage box 12 along the receiving tube 14.

[0034] The ball bearings of the adhesion testing device of this application are placed in the storage box 12. When adhesion testing is required, the ball bearings in the storage box 12 can be transported to the top of the test plate 11 through the vacuum system 15 via vacuum suction. There is no need to use tweezers to transfer the ball bearings, which avoids problems such as the ball bearings being lost or dropped during the transfer process. This not only saves the time cost of customizing the ball bearings, but also has high adhesion testing efficiency.

[0035] Alternatively, the balls may be, for example, steel balls or iron balls.

[0036] Optionally, the vacuum system 15 includes a vacuum pump (not shown) and at least one first suction pipe 151, one end of which is connected to the vacuum pump, and the other end of which is at least partially disposed in the delivery pipe 13 from the outlet of the delivery pipe 13.

[0037] Optionally, Figure 3 This is a partial structural schematic diagram of the side panel of this application, as shown below. Figure 3 As shown, the fixed area 11a is provided with multiple adsorption holes 102, each of which is connected to the vacuum system 15. The vacuum system 15 adsorbs the adhesive film onto the fixed area 11a through each adsorption hole 102. This application utilizes the vacuum system 15 to generate negative pressure in each adsorption hole 102, thereby adsorbing the adhesive film onto the fixed area 11a. This effectively prevents the problem of pressure-sensitive adhesive contaminating the test plate 11 when manually fixing the adhesive film with adhesive tape due to the inherent curling property of the adhesive film itself.

[0038] Optionally, the vacuum system 15 also includes at least one second suction tube (not shown), one end of which is connected to the vacuum pump and the other end of which is connected to each suction hole 102.

[0039] Optionally, such as Figure 1 and Figure 2As shown, the test plate 11 has multiple through holes 101, which are arranged sequentially along the inclined direction of the test plate 11, and the inner diameter of each through hole 101 gradually increases along the inclined direction of the test plate 11. Each through hole 101 is used to receive balls of different diameters. The viscosity testing device includes multiple receiving tubes 14, each receiving tube 14 being connected to a corresponding through hole 101. In this embodiment, customized balls of different specifications are placed in through holes 101 of corresponding diameters, and balls of appropriate size are selected for viscosity testing as needed.

[0040] Optionally, such as Figure 1 and Figure 2 As shown, the viscosity testing device also includes multiple baffles (not shown) and multiple baffle actuators 16. Each baffle is movably installed in each through hole 101 or receiving tube 14. Each baffle actuator 16 is connected to the upper test plate 11 and is connected to each baffle via a telescopic shaft. Each baffle actuator 16 is used to drive each baffle to open or close each through hole 101 or receiving tube 14. When the baffle actuator 16 drives the baffle to open the through hole 101 or receiving tube 14, the ball located in the through hole 101 falls into the storage box 12. Then, the vacuum system 15 sucks the ball into the delivery tube 13 to start the viscosity test. After the ball rolls over the viscous film, it falls into the through hole 101 of the corresponding size. In this embodiment, each through hole 101 is used to accommodate balls of different sizes, and each baffle is used to carry each ball. The corresponding baffle is opened according to the test requirements, so that the ball of the corresponding size falls into the storage box 12.

[0041] Optionally, such as Figure 2 As shown, the viscosity testing device also includes a lifting driver 17, which is arranged vertically. The drive shaft of the lifting driver 17 is connected to the bottom surface of the test plate 11, and the lifting driver 17 is used to adjust the tilt angle of the test plate 11. In this embodiment, the lifting driver 17 is, for example, a cylinder or a hydraulic cylinder, but is not limited thereto.

[0042] Optionally, such as Figure 1 and Figure 2 As shown, the adhesion testing device also includes a magnetic suction component 18 and a cleaning mechanism 19. The magnetic suction component 18 is disposed on the ball path between the fixed area 11a and the through hole 101. The magnetic suction component 18 is used to magnetically attract the ball. The cleaning mechanism 19 is disposed opposite to the test plate 11 and is used to clean the ball attracted by the magnetic suction component 18. When the ball rolls over the adhesive film and passes the magnetic suction component 18, the magnetic suction component 18 magnetically attracts the ball, and then the cleaning mechanism 19 cleans the ball to remove the adhesive from the surface of the ball.

[0043] Optionally, the magnetic attraction assembly 18 includes a support tube, a magnetic component (not shown), and a magnetic component driver (not shown). One end of the support tube is connected to the bottom surface of the test plate 11, and the other end is connected to the storage box 12. The magnetic component and the magnetic component driver are disposed in the support tube. The magnetic component driver is used to drive the magnetic component to move towards or away from the test plate 11 and to drive the magnetic component to rotate. When it is necessary to attract a ball, the magnetic component driver drives the magnetic component to press against the test plate 11, at which time the magnetic component can magnetically attract the ball. After the ball is cleaned, the magnetic component driver drives the magnetic component away from the test plate 11, and the magnetic force attracting the ball gradually decreases until the ball can continue to roll down the test plate 11 and finally roll into the through hole 101 of the corresponding size. In this embodiment, the magnetic component driver is, for example, a motor, a cylinder, or a hydraulic cylinder, which can be freely selected according to actual needs.

[0044] Optionally, such as Figure 1 and Figure 2 As shown, the cleaning mechanism 19 includes a mounting frame 191, a movable arm 192, a cleaning cotton 193, and a cleaning actuator (not shown). The mounting frame 191 is fixed on the test plate 11. The movable arm 192 is arranged horizontally and movably connected to the mounting frame 191. The cleaning cotton 193 is connected to the movable arm 192 and is positioned opposite the magnetic suction assembly 18. The cleaning actuator is connected to the mounting frame 191 and is used to drive the movable arm 192 to extend and retract so that the cleaning cotton 193 cleans the balls. In this embodiment, the mounting frame 191 is located on the side of the test plate 11, the movable arm 192 is arranged along the width direction of the test plate 11, the cleaning surface is connected to the end of the movable arm 192, and the cleaning actuator can drive the movable arm 192 to reciprocate along the width direction of the test plate 11, thereby causing the cleaning cotton 193 to wipe the balls.

[0045] Optionally, the mounting bracket 191 is provided with a movable hole 104 and a through hole, the movable arm 192 is disposed through the movable hole 104, and a guide rod 1921 is fixed to the end of the movable arm 192 away from the cleaning cotton 193, the guide rod 1921 is disposed through the through hole.

[0046] Alternatively, the cleaning actuator may be, for example, a motor, which drives the movable arm 192 to extend and retract via a gear assembly or roller 2311.

[0047] Optionally, a telescopic actuator 194 is connected to the movable arm 192. The movable arm 192 is connected to the cleaning cotton 193 via the telescopic actuator 194. The telescopic actuator 194 is used to drive the cleaning cotton 193 to move towards or away from the magnetic component 18. When the magnetic component 18 attracts the ball, the telescopic actuator 194 drives the cleaning cotton 193 to move towards the ball until the cleaning cotton 193 covers the ball. Then, the cleaning actuator drives the cleaning cotton 193 to move back and forth. At the same time, the magnetic component actuator drives the ball to rotate through the magnetic component until the residual adhesive on the ball is removed.

[0048] Optionally, the cleaning cotton 193 is provided with an ethyl acetate solvent that can remove adhesive.

[0049] Optionally, such as Figure 1 and Figure 2 As shown, the viscosity testing apparatus also includes a placement frame 21 and a switch driver 22. The placement frame 21 is disposed on the test plate 11 and connected to the outlet of the delivery pipe 13. The placement frame 21 is provided with a movable door 211. The switch driver 22 is connected to the test plate 11. The switch driver 22 is used to drive the movable door 211 to open so that the ball rolls towards the fixed area 11a and to drive the movable door 211 to open and close so that the ball stays in the placement frame 21. When the ball rolls from the outlet of the delivery pipe 13 into the placement frame 21, the switch driver 22 drives the movable door 211 to open so that the ball rolls towards the fixed area 11a to start the viscosity test.

[0050] Optionally, the inclined plate includes a fixed plate segment 112 and a movable plate segment 113. A fixed area 11a is disposed on the fixed plate segment 112, and a through hole 101 is disposed on the movable plate segment 113. The fixed plate segment 112 has a first chute (not shown) and a second chute 103 at both ends along its inclined direction. Both the first and second chute 103 are arranged along the width direction of the fixed plate segment 112. The conveying pipe 13 is slidably connected to the first chute via a first slide rail, and the movable plate segment 113 is slidably connected to the second chute 103 via a second slide rail. The outlet of the conveying pipe 13 and the position of the movable plate segment 113 are adjusted synchronously to perform adhesion tests on different areas of the adhesive film. In this embodiment, the adhesive of an adhesive film needs to be tested at many points to accurately reflect its adhesive properties. Therefore, the positions of the conveying pipe 13 and the movable plate segment 113 need to be adjusted after each adhesion test.

[0051] Optionally, the fixed plate segment 112 is connected to guide rails 114 on opposite sides near the movable plate segment 113, and the second slide groove 103 extends to the two guide rails 114, allowing the movable plate segment 113 to slide onto the guide rails 114.

[0052] Optionally, Figure 4 This is a partial structural schematic diagram of the viscosity testing device of this application, as shown below. Figure 1 and Figure 4 As shown, the adhesion testing device also includes a connecting frame 23, a scraper 24, and a scraper driver (not shown). The connecting frame 23 is fixed on the test plate 11. The scraper 24 is movably connected to the connecting frame 23 via a connecting rod 25. The scraper driver is connected to the connecting frame 23. The scraper driver is used to drive the connecting rod 25 to move in the tilt direction of the test to push the ball away from the adhesive film. The pushed-out ball rolls towards the magnetic component until it is attracted by the magnetic component.

[0053] Optionally, such as Figure 1 and Figure 4 As shown, the connecting frame 23 includes a connecting shell 231, which has a wire hole 105. The wire hole 105 is arranged along the inclined direction of the test plate 11. Multiple rollers 2311 are provided in the wire hole 105. A connecting rod 25 is arranged through the wire hole 105 and contacts the rollers 2311. A scraper driver is connected inside the connecting shell 231. The scraper driver drives the connecting rod 25 to move through each roller 2311.

[0054] Optionally, the connecting frame 23 further includes a support rod 232 and at least two guide rods 233. One end of the support rod 232 is connected to the connecting shell 231. The support rod 232 is provided with at least two first guide holes, and each guide rod 233 is provided with a second guide hole. Each guide rod 233 passes through its respective first guide hole, and the connecting rod 25 passes through its respective second guide hole. The guide rods 233 can be manually operated to push the scraper 24 to reciprocate along the inclined direction of the test plate 11, or the scraper driver can be used to drive the scraper 24 to reciprocate along the inclined direction of the test plate 11.

[0055] Optionally, the scraper driver can drive the scraper 24 to reciprocate along the width direction of the test plate 11. For example, during a tack test, the scraper driver drives the scraper 24 to retract along the width direction of the test plate 11 to prevent the scraper 24 from blocking the balls. When it is necessary to push the balls off the tack film, the scraper driver drives the scraper 24 to extend along the width direction of the test plate 11, and then drives the scraper 24 to move along the tilt direction of the test plate 11 until the balls are pushed away from the tack film.

[0056] In other embodiments, the viscosity testing apparatus also includes a translation driver (not shown) that drives the scraper 24 to reciprocate along the width direction of the test plate 11. In this case, the scraper driver can only drive the scraper 24 to move along the tilt direction of the test plate 11.

[0057] The above embodiments are merely illustrative of the principles and effects of this application and are not intended to limit this application. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this application. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this application should still be covered by the claims of this application.

Claims

1. A viscosity testing device, characterized in that, The device includes a test plate, a storage box, a delivery tube, a receiving tube, and a vacuum system. The test plate is tilted above the storage box and has a fixing area for fixing the adhesive film to be tested. The bottom of the test plate has a through hole. One end of the receiving tube is connected to the through hole, and the other end of the receiving tube is connected to the storage box. The inlet of the delivery tube is connected to the storage box, and the outlet of the delivery tube is located at the top of the test plate. The vacuum system is connected to the delivery tube. The vacuum system sucks out the ball bearings from the storage box through the delivery tube and causes the ball bearings to roll out from the outlet of the delivery tube. The ball bearings roll down the test plate and past the fixing area.

2. The viscosity testing device as described in claim 1, characterized in that, The fixed area is provided with a plurality of adsorption holes, each of which is connected to the vacuum system. The vacuum system adsorbs the adhesive film into the fixed area through each of the adsorption holes.

3. The viscosity testing device as described in claim 1, characterized in that, The test plate is provided with a plurality of through holes, which are arranged sequentially along the inclined direction of the test plate, and the inner diameter of each through hole gradually increases along the inclined direction of the test plate. Each through hole is used to receive balls of different diameters. The viscosity testing device includes a plurality of receiving tubes, each receiving tube being connected to each of the through holes.

4. The viscosity testing device as described in claim 3, characterized in that, The viscosity testing device further includes multiple baffles and multiple baffle drivers. Each baffle is movably installed in each of the through holes. Each baffle driver is connected to the test plate and is connected to each baffle via a telescopic shaft. Each baffle driver is used to drive each baffle to open or close each of the through holes.

5. The viscosity testing device as described in claim 1, characterized in that, The viscosity testing device also includes a lifting driver, which is arranged vertically and has its drive shaft connected to the bottom surface of the test plate. The lifting driver is used to adjust the tilt angle of the test plate.

6. The viscosity testing device as described in claim 1, characterized in that, The viscosity testing device further includes a magnetic suction component and a cleaning mechanism. The magnetic suction component is disposed on the ball path between the fixed area and the through hole, and is used to magnetically attract the ball. The cleaning mechanism is disposed opposite to the test plate, and is used to clean the ball attracted by the magnetic suction component.

7. The viscosity testing apparatus as described in claim 6, characterized in that, The cleaning mechanism includes a mounting frame, a movable arm, a cleaning cotton, and a cleaning actuator. The mounting frame is fixed to the test plate. The movable arm is arranged horizontally and movably connected to the mounting frame. The cleaning cotton is connected to the movable arm and is positioned opposite the magnetic suction assembly. The cleaning actuator is connected to the mounting frame and is used to drive the movable arm to extend and retract so that the cleaning cotton cleans the ball. The movable arm is connected to a telescopic actuator, and the movable arm is connected to the cleaning cotton through the telescopic actuator. The telescopic actuator is used to drive the cleaning cotton to move towards or away from the magnetic component.

8. The viscosity testing device as described in claim 1, characterized in that, The viscosity testing device further includes a placement frame and a switch driver. The placement frame is disposed on the test plate and connected to the outlet of the delivery pipe. The placement frame is provided with a movable door. The switch driver is connected to the test plate. The switch driver is used to drive the movable door to open so that the ball rolls toward the fixed area and to drive the movable door to open and close so that the ball stays in the placement frame.

9. The viscosity testing apparatus according to any one of claims 1 to 8, characterized in that, The test plate includes a fixed plate segment and a movable plate segment. The fixed area is disposed in the fixed plate segment, and the through hole is disposed in the movable plate segment. The fixed plate segment has a first chute and a second chute at both ends along its inclined direction. The first chute and the second chute are both disposed along the width direction of the fixed plate segment. The delivery pipe is slidably connected to the first chute via a first slide rail, and the movable plate segment is slidably connected to the second chute via a second slide rail. The outlet of the delivery pipe and the position of the movable plate segment are adjusted synchronously to perform adhesion tests on different areas of the adhesive film. The fixed plate segment is connected to guide rails on opposite sides near the movable plate segment, and the second slide groove extends to the two guide rails, allowing the movable plate segment to slide onto the guide rails.

10. The viscosity testing apparatus according to any one of claims 1 to 8, characterized in that, The adhesion testing device further includes a connecting frame, a scraper, and a scraper driver. The connecting frame is fixed on the test plate, the scraper is movably connected to the connecting frame via a connecting rod, and the scraper driver is connected to the connecting frame. The scraper driver is used to drive the connecting rod to move along the tilt direction of the test to push the ball away from the adhesive film. The connecting frame includes a connecting shell with a wire hole arranged along the inclined direction of the test plate. Multiple rollers are provided in the wire hole. A connecting rod passes through the wire hole and contacts the rollers. A scraper driver is connected inside the connecting shell and drives the connecting rod to move through each of the rollers. The connecting frame further includes a support rod and at least two guide rods. One end of the support rod is connected to the connecting shell. The support rod is provided with at least two first guide holes, and each guide rod is provided with a second guide hole. Each guide rod passes through each of the first guide holes, and the connecting rod passes through the second guide holes of each of the guide rods.

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