Device for testing the initial tack strength of die-cut tape

Abstract

This utility model belongs to the field of lithium-ion battery technology, specifically relating to a device for testing the initial adhesive strength of die-cut tape. The device includes a support plate, an inclined plate, a connecting hinge, a level, a slider, an inclined plate positioning screw, an inclined plate groove, a support plate groove, a groove fixing screw, and a ruler. The ingenious design and coordinated operation of all components make the operation simple and easy to understand, requiring no complex procedures or professional skills training, thus significantly lowering the testing threshold.

Description

Technical Field

[0001] This utility model belongs to the field of lithium-ion battery technology, specifically relating to a device for detecting the initial adhesive strength of die-cut tape. Background Technology

[0002] Die-cut tape is widely used as a key auxiliary material in the production and use of lithium-ion batteries. Its functions include insulation, fixation, and protection, playing a vital role in the performance, appearance, and safety of the battery. The initial tack strength of the die-cut tape is one of the core performance indicators, directly affecting its bonding effect and reliability in battery components.

[0003] In existing technologies, testing methods for the adhesive strength of die-cut tapes mainly rely on standard-sized substrate test tapes, such as evaluating performance by testing the adhesion strength between a fixed-size tape sample and a standard surface. However, in practical applications, die-cut tapes often exhibit diverse shapes and sizes after die-cutting (such as irregular holes, complex edge structures, etc.). Existing testing methods, limited to standard-sized samples, cannot directly test and compare the adhesive effects of these die-cut tapes in actual use.

[0004] When insufficient adhesion of die-cut tapes occurs in actual production, the lack of testing methods specific to die-cut shapes and sizes makes it difficult to accurately analyze the tape's bonding effect and effectively trace the supplier's quality responsibility, leading to loopholes in quality control. To solve this technical problem, a testing device and method are needed that can adapt to die-cut tapes of different shapes and sizes, enabling a direct comparison and quantitative evaluation of their initial adhesion. Utility Model Content

[0005] The purpose of this invention is to provide a device for detecting the initial adhesive strength of die-cut tape, thereby solving the problems existing in the prior art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a device for detecting the initial adhesive force of die-cut tape, characterized in that it includes a support plate, an inclined plate, a connecting hinge, a level, a slider, an inclined plate positioning screw, an inclined plate groove, a support plate groove, a groove fixing screw, and a scale; the support plate and the inclined plate are movably connected by the connecting hinge, allowing the inclined plate to rotate relative to the support plate; the slider is mounted on the support plate, and the inclined plate is connected to the slider by the inclined plate positioning screw, allowing the slider to move on the support plate to change the angle between the inclined plate and the support plate; the level is embedded in the corner of the support plate; an inclined plate groove is provided in the middle of the inclined plate, the arc size of which is adapted to the diameter of a steel ball; at least one support plate groove is provided in the middle of the support plate, the arc size of which is adapted to the diameter of a steel ball, and the support plate groove is mounted on the support plate by the groove fixing screw; the scale is provided on both sides of the support plate groove.

[0007] Preferably, the tray has two tray grooves in the middle, the two tray grooves are symmetrically distributed, and each tray groove is fixed to the tray by no less than two groove fixing screws.

[0008] Preferably, the inclined plate positioning screw passes through the inclined plate and is threadedly connected to the slider. By turning the inclined plate positioning screw, the tilt angle of the inclined plate can be fixed or adjusted.

[0009] Preferably, both the inclined plate groove and the support plate groove are arc-shaped grooves, and the arc-shaped openings of both face the side where the support plate and the inclined plate connect.

[0010] Preferably, the scale is set along the length of the tray groove, and the scale is used to mark the sliding distance of the steel ball in the tray groove.

[0011] Preferably, the surface of the tray is provided with a groove for the slider to slide in, and the slider moves in the groove to achieve a sliding connection with the tray.

[0012] Preferably, the connecting hinge includes two leaf blades and a pin. The two leaf blades are fixedly connected to the support plate and the inclined plate, respectively, and the pin passes through the connecting hole of the two leaf blades to realize the movable connection between the support plate and the inclined plate.

[0013] Preferably, the depth of the inclined plate groove is not less than the radius of the steel ball, and the depth of the support plate groove is not less than the radius of the steel ball, so as to ensure that the steel ball can roll stably in the groove.

[0014] Preferably, the groove fixing screw is a countersunk screw. When the tray groove is installed on the tray, the head of the countersunk screw sinks into the surface of the tray to avoid affecting the rolling of the steel ball.

[0015] Preferably, both the pallet and the inclined plate are made of rust-proof material, which is stainless steel or aluminum alloy.

[0016] The beneficial effects of this utility model are: its ingenious structural design and coordinated operation of all components make the operation simple and easy to understand, requiring no complicated operating procedures or professional skills training, thus greatly lowering the testing threshold. At the same time, the device uses common and inexpensive materials, and the manufacturing process is not complex. While ensuring the testing function, it effectively controls production costs, making it suitable for widespread application in various enterprises and institutions that require testing the initial tack strength of die-cut tapes.

[0017] This device overcomes the limitations of traditional testing methods, which can only test standard-sized substrate test tapes. It can compare the bonding effects of die-cut tapes of different shapes and sizes, providing strong technical support for analyzing insufficient adhesion in actual tape use. By accurately comparing bonding effects, companies can more precisely trace supplier quality, promptly identify and resolve product quality issues, and provide effective quality control measures for the production process, thereby improving overall product quality and production efficiency. Attached Figure Description

[0018] Figure 1 This is a perspective view of the present invention. Detailed Implementation

[0019] It should be noted that, without conflict, the embodiments and features in the embodiments of this utility model can be combined with each other.

[0020] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0021] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," "fixed connection," and "fixed connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0022] The specific embodiments of this utility model are described in detail below with reference to the accompanying drawings and preferred embodiments.

[0023] like Figure 1As shown, a device for detecting the initial adhesive strength of die-cut tape includes a support plate 1, an inclined plate 2, a connecting hinge 3, a level 4, a slider 5, an inclined plate positioning screw 6, an inclined plate groove 7, a support plate groove 8, a groove fixing screw 9, and a ruler 10.

[0024] Platform 1: As the basic support structure of the entire device, it provides an installation platform for other components. Its surface flatness and stability have a significant impact on the measurement results. It is usually made of metal with a certain thickness and strength, such as aluminum alloy or stainless steel, to ensure that it will not deform during use.

[0025] Inclined plate 2: Connected to the support plate 1 via hinge 3, it can rotate relative to the support plate 1 to adjust the tilt angle. Inclined plate 2 is used to guide the steel ball to obtain initial velocity; its surface needs to be smooth to reduce friction when the steel ball rolls. The material is similar to that of the support plate 1, often aluminum alloy or stainless steel.

[0026] Connecting hinge 3: Connects the support plate 1 and the inclined plate 2, allowing the inclined plate 2 to rotate around it. It generally consists of two metal blades and a pin. The two blades are fixed to the support plate 1 and the inclined plate 2 respectively. The pin passes through a small hole on the blade to achieve a movable connection, ensuring that the angle of the inclined plate 2 can be flexibly adjusted.

[0027] Level 4: Embedded in the corner of the tray 1, used to detect whether the tray 1 is level. Common bubble level instruments contain sealed liquid and an air bubble. When the tray 1 is level, the air bubble is located in the center of the scale line; if tilted, the air bubble shifts, allowing the operator to make timely adjustments and ensure measurement accuracy.

[0028] Slider 5: Mounted on the support plate 1, it can slide back and forth within the groove on the surface of the support plate 1. It is connected to the inclined plate 2 via the inclined plate positioning screw 6. When slider 5 moves, it can drive the inclined plate 2 to change the angle with the support plate 1, thereby achieving precise adjustment of the tilt angle of the inclined plate 2.

[0029] Inclined plate positioning screw 6: Passes through the inclined plate 2 and is threadedly connected to the slider 5, used to fix the tilt angle of the inclined plate 2. Tightening or loosening this screw can lock and adjust the angle of the inclined plate 2, ensuring that the inclined plate 2 maintains a stable tilt state during measurement.

[0030] Inclined groove 7: Located in the middle of inclined plate 2, its arc dimension matches the diameter of the steel ball, guiding the steel ball downhill and giving it a stable initial velocity. The surface smoothness and arc accuracy of the groove have a significant impact on the trajectory and speed of the steel ball's descent, and it is usually precision-machined.

[0031] Pallet groove 8: Located in the middle of pallet 1, there are generally two symmetrically distributed grooves. Pallet groove 8 is also arc-shaped, and its size matches the diameter of the steel ball. It is used to receive the steel ball after it slides down from the inclined plate groove 7 and impacts the die-cut tape. Pallet groove 8 is detachably fixed to pallet 1 by groove fixing screws 9, which facilitates replacement and maintenance.

[0032] Recessed fixing screw 9: Used to fix the tray groove 8 to the tray 1. Countersunk screws are usually used, so that the screw head is recessed into the surface of the tray 1 to avoid affecting the rolling of the steel ball in the tray groove 8. Generally, each tray groove 8 is fixed by at least two recessed fixing screws 9 to ensure a firm installation.

[0033] Scale 10: Installed on both sides of the tray groove 8, used to measure the sliding distance of the steel ball within the tray groove 8. The scale 10 has clear graduations and is generally accurate to the millimeter level. Common types include plastic and metal scales. It is installed on both sides of the tray groove 8 by means of adhesive or slot fixing, ensuring that it is parallel to the tray groove 8 for easy and accurate reading.

[0034] This device measures the initial tack of die-cutting tape by detecting the varying sliding distances of a steel ball on tapes with different adhesive strengths. When the steel ball begins to slide down from a certain height in the groove of an inclined plate, it gains kinetic energy under gravity due to the plate's angle of inclination, accelerating its descent along the groove. Upon reaching the bottom of the inclined plate, the ball impacts the die-cutting tape adhered to the groove on the support plate. The initial tack of the tape hinders the movement of the steel ball; a stronger initial tack results in greater resistance and a shorter sliding distance within the groove. Conversely, a weaker initial tack reduces resistance and increases the sliding distance.

[0035] By setting scales on both sides of the tray groove, the sliding distance of the steel ball within the groove can be accurately measured. During measurement, the device is first adjusted to a horizontal position to ensure the steel ball's descent and sliding process is unaffected by tray tilt. Then, multiple tests are conducted for die-cut tapes of different shapes and sizes under the same steel ball drop height (i.e., the same initial kinetic energy), recording the sliding distance of the steel ball each time and taking the average. Finally, by comparing the average sliding distance of the steel ball for different die-cut tapes, the initial adhesive strength of different die-cut tapes can be intuitively determined, thus achieving effective detection and comparison of the initial adhesive strength of die-cut tapes.

[0036] For those skilled in the art, several improvements and modifications can be made without departing from the principle of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model.

Claims

1. A device for detecting the initial tack adhesion of die-cut tape, characterized in that, The system includes a support plate, a slant plate, a connecting hinge, a level, a slider, a slant plate positioning screw, a slant plate groove, a support plate groove, groove fixing screws, and a ruler. The support plate and the slant plate are movably connected by the connecting hinge, allowing the slant plate to rotate relative to the support plate. The slider is mounted on the support plate, and the slant plate is connected to the slider via the slant plate positioning screw. The slider can move on the support plate, thereby changing the angle between the slant plate and the support plate. The level is embedded in a corner of the support plate. A slant plate groove is provided in the middle of the slant plate, and the arc size of the slant plate groove is adapted to the diameter of the steel ball. At least one support plate groove is provided in the middle of the support plate, and the arc size of the support plate groove is adapted to the diameter of the steel ball. The support plate groove is mounted on the support plate via groove fixing screws. The ruler is located on both sides of the support plate groove.

2. The apparatus for detecting the initial tack adhesion of die-cut tape according to claim 1, characterized in that: The pallet has two pallet grooves in the middle, which are symmetrically distributed, and each pallet groove is fixed to the pallet by no less than two groove fixing screws.

3. The device for detecting the initial tack adhesion effect of die-cut tape according to claim 1, characterized in that: The inclined plate positioning screw passes through the inclined plate and is threadedly connected to the slider. By turning the inclined plate positioning screw, the tilt angle of the inclined plate can be fixed or adjusted.

4. The device for detecting the initial tack adhesion effect of die-cut tape according to claim 1, characterized in that: Both the inclined plate groove and the support plate groove are arc-shaped grooves, and the arc-shaped openings of both face the side where the support plate and the inclined plate connect.

5. The apparatus for detecting the initial tack adhesion of die-cut tape according to claim 1, characterized in that: The scale is set along the length of the tray groove, and the scale is used to mark the sliding distance of the steel ball in the tray groove.

6. The apparatus for detecting the initial tack adhesion of die-cut tape according to claim 1, characterized in that: The surface of the tray is provided with a groove for the slider to slide in, and the slider moves in the groove to achieve a sliding connection with the tray.

7. The apparatus for detecting the initial tack adhesion of die-cut tape according to claim 1, characterized in that: The connecting hinge includes two leaf blades and a pin. The two leaf blades are fixedly connected to the support plate and the inclined plate, respectively. The pin passes through the connecting holes of the two leaf blades to realize the movable connection between the support plate and the inclined plate.

8. The apparatus for detecting the initial tack adhesion of die-cut tape according to claim 1, characterized in that: The depth of the inclined plate groove is not less than the radius of the steel ball, and the depth of the support plate groove is not less than the radius of the steel ball, so as to ensure that the steel ball can roll stably in the groove.

9. The apparatus for detecting the initial tack adhesion of die-cut tape according to claim 1, characterized in that: The groove fixing screw is a countersunk screw. When the groove of the support plate is installed on the support plate, the head of the countersunk screw is sunk into the surface of the support plate to avoid affecting the rolling of the steel ball.

10. The apparatus for detecting the initial tack adhesion of die-cut tape according to claim 1, characterized in that: Both the pallet and the inclined plate are made of rust-proof material, which is stainless steel or aluminum alloy.

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