CN117388166B - Initial viscosity test equipment and method by ball method - Google Patents
Initial viscosity test equipment and method by ball method Download PDFInfo
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- CN117388166B CN117388166B CN202311689182.3A CN202311689182A CN117388166B CN 117388166 B CN117388166 B CN 117388166B CN 202311689182 A CN202311689182 A CN 202311689182A CN 117388166 B CN117388166 B CN 117388166B
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- 238000012360 testing method Methods 0.000 title claims abstract description 201
- 238000000034 method Methods 0.000 title claims abstract description 24
- 238000003825 pressing Methods 0.000 claims abstract description 200
- 239000002390 adhesive tape Substances 0.000 claims abstract description 96
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 64
- 239000010959 steel Substances 0.000 claims abstract description 64
- 238000005096 rolling process Methods 0.000 claims abstract description 61
- 230000007246 mechanism Effects 0.000 claims abstract description 19
- 238000010998 test method Methods 0.000 claims abstract description 5
- 238000004140 cleaning Methods 0.000 claims description 26
- 238000007789 sealing Methods 0.000 claims description 15
- 238000010438 heat treatment Methods 0.000 claims description 14
- 239000000853 adhesive Substances 0.000 claims description 10
- 230000001070 adhesive effect Effects 0.000 claims description 10
- 239000012790 adhesive layer Substances 0.000 claims description 8
- 239000007921 spray Substances 0.000 claims description 7
- 229920006267 polyester film Polymers 0.000 claims description 6
- 238000004088 simulation Methods 0.000 claims description 6
- 238000007790 scraping Methods 0.000 claims description 4
- 238000005507 spraying Methods 0.000 claims description 2
- 239000004576 sand Substances 0.000 claims 3
- 230000008569 process Effects 0.000 abstract description 5
- 238000001514 detection method Methods 0.000 description 10
- 229920000297 Rayon Polymers 0.000 description 8
- 239000010410 layer Substances 0.000 description 7
- 238000010586 diagram Methods 0.000 description 6
- 239000003795 chemical substances by application Substances 0.000 description 5
- 239000002131 composite material Substances 0.000 description 4
- 238000005452 bending Methods 0.000 description 3
- 230000006872 improvement Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 239000012459 cleaning agent Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000010030 laminating Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000007306 turnover Effects 0.000 description 2
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 1
- 235000017491 Bambusa tulda Nutrition 0.000 description 1
- 241001330002 Bambuseae Species 0.000 description 1
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 1
- 239000004820 Pressure-sensitive adhesive Substances 0.000 description 1
- 230000002745 absorbent Effects 0.000 description 1
- 239000002250 absorbent Substances 0.000 description 1
- -1 acrylic ester Chemical class 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 239000011425 bamboo Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 210000000988 bone and bone Anatomy 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 239000003599 detergent Substances 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 239000011241 protective layer Substances 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 238000005201 scrubbing Methods 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
- 239000004834 spray adhesive Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
- 230000037303 wrinkles Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N19/00—Investigating materials by mechanical methods
- G01N19/04—Measuring adhesive force between materials, e.g. of sealing tape, of coating
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- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention discloses a rolling ball method initial viscosity test device and a test method, and particularly relates to the technical field of adhesive tape testing, wherein the rolling ball method initial viscosity test device comprises a test board, the test board is used for placing an adhesive tape to be tested, the top end of the test board is provided with a cross rod and a rolling ball release ring, the cross rod is fixedly arranged on the test board, the rolling ball release ring is movably arranged on the cross rod, the cross rod is used for placing a steel ball, and a heater is arranged in the test board; the test board is also provided with two groups of edge pressing structures, each edge pressing structure comprises a pressing board, and a positioning mechanism is arranged between the pressing board and the test board; one side of the pressing plate, which is close to the test plate, is provided with a pressing structure. The invention can effectively simulate and test the actual performance parameters of the adhesive tape to be tested in a high-temperature environment, can avoid curling of the adhesive tape to be tested due to temperature rise, ensures that the adhesive tape to be tested can be flatly and stably attached to the surface of the test board for testing in the testing process, and improves the authenticity and accuracy of the test parameters.
Description
Technical Field
The invention relates to the technical field of adhesive tape testing, in particular to initial viscosity testing equipment and method by a ball method.
Background
When a short contact time occurs between an object and the tacky surface of the pressure-sensitive adhesive tape with a slight pressure, the adhesion of the adhesive tape to the object is called as initial tackiness. In order to analyze the quality of the product of the adhesive tape, the performance of the adhesive tape needs to be tested, wherein the performance includes the initial adhesiveness test of the adhesive tape.
The method is characterized in that an inclined rolling ball method is adopted in detection, when a steel ball and a viscous surface of a test sample are in short contact under a tiny pressure, the initial viscosity of the test sample is tested through the adhesive force action of products such as adhesive tapes, labels and the like on the steel ball, specifically, the adhesive tape sample is placed on an inclined test board with the adhesive surface facing upwards, and the back surface of the adhesive tape sample is non-viscous, so that in order to ensure the smooth placement of an adhesive tape to be tested, an auxiliary adhesive tape is required to be used for bonding the edge of the adhesive tape to be tested on the surface of the test board, the steel ball is controlled to slide from a rolling assisting section and pass through an adhesive layer of the adhesive tape to be tested, and the initial viscosity is evaluated according to the maximum steel ball size which can be bonded by the adhesive surface with a specified length; or rolling a steel ball with a specified size through the inclined groove, and measuring the rolling distance of the steel ball on the adhesive surface of the adhesive tape on the horizontal plate to evaluate the initial adhesive strength.
In research and development of a tape product and performance understanding of the tape product, performance testing of multiple scenes is required to be performed on the product, for example, performance of the tape under a high temperature condition is simulated, a high temperature environment is required to be simulated, parameter detection is performed on the tape under the high temperature environment so as to be convenient for fully understanding performance of the product, improvement of the product is facilitated, therefore, initial viscosity of the tape is required to be tested under a specified temperature is required to be simulated, heating of the tape is required during actual detection, for example, after the tape to be tested is fixed on a test board, the temperature of the tape to be tested is heated to 60-120 ℃, the temperature of the adhesive layer reaches the simulated scene temperature, further more accurate analysis can be performed on performance of the tape, and improvement design of the tape is facilitated.
In the prior art, in order to improve the performance of the adhesive tape, a multi-layer structure is adopted to form an adhesive tape structure in a compounding way, for example, an adhesive tape formed by multi-layer composite structures such as an adhesive layer, a supporting layer, a protective layer and a substrate layer, when the multi-layer composite adhesive tape is used for simulating a high-temperature environment test, although the adhesive tape to be tested can be adhered to a test board by using an auxiliary adhesive tape, after the multi-layer composite adhesive tape is heated, materials are heated and expanded, and because the expansion coefficients of the materials of the layers are different, the adhesive tape can generate stress, and the adhesive tape to be tested generates bending, especially the edge part of the adhesive tape to be tested can break loose the auxiliary adhesive tape during bending, so that the movement of a steel ball is influenced in the falling process of the steel ball, and the detection error is caused.
Disclosure of Invention
The invention provides a ball method initial viscosity test device and a ball method initial viscosity test method, which aims to solve the problems that: when the test is carried out by simulating a high-temperature state in the prior art, the multilayer composite adhesive tape is heated and expanded to generate stress to cause bending, so that the movement of the steel ball is influenced, and the technical problem of detection error is caused.
In order to achieve the above purpose, the present invention provides the following technical solutions: the initial viscosity test equipment for the ball rolling method comprises a test board, wherein the test board is used for placing an adhesive tape to be tested, a cross rod and a ball release ring are arranged at the top end of the test board, the cross rod is fixedly arranged on the test board, the ball release ring is movably arranged on the cross rod, the ball release ring is used for placing a steel ball, and a heater is arranged in the test board;
the test board is also provided with two groups of edge pressing structures, each edge pressing structure comprises a pressing board, the pressing boards are arranged in parallel with the test board, a positioning mechanism is arranged between each pressing board and the test board, and is used for fixing the relative positions of the two groups of pressing boards on the surface of the test board, and when the pressing boards move to the edges of the adhesive tapes to be tested, the adhesive tapes to be tested are edge-pressed and fixed;
one side of the pressing plate, which is close to the test plate, is provided with a pad pressing structure, and the pad pressing structure is attached to the surfaces of the adhesive tape to be tested and the auxiliary rolling film when the pressing plate clamps the edge of the adhesive tape to be tested.
In a preferred embodiment, a rotating block is fixedly connected to the ball release ring, a perforation is formed in the rotating block, the cross rod penetrates through the perforation of the rotating block, the perforation hole diameter of the rotating block is larger than the diameter of the cross rod, and the ball release ring is attached to the surface of the test board when being overturned to the surface of the test board.
In a preferred embodiment, the test device further comprises a base, the bottom end of the test board is rotatably mounted on the base, a push block is slidably arranged on the base, a connecting rod is rotatably mounted on the push block, one end of the connecting rod, which is far away from the push block, is rotatably connected with the test board, and a screw rod is rotatably arranged on the base, penetrates through the push block and is in threaded connection with the push block.
In a preferred embodiment, the positioning mechanism comprises two guide blocks, the two guide blocks are arranged at two groups, the two groups of guide blocks are all installed at one end, close to the cross rod, of the test plate, the guide blocks slide along the width direction of the test plate, the two groups of pressing plates are respectively installed on the two guide blocks, a sliding groove is formed in the guide blocks, the pressing plates are slidably installed in the sliding grooves of the guide blocks, the pressing plates slide on the guide blocks along the length direction of the test plate, the positioning mechanism further comprises a double-end stud, a group of threads are respectively arranged at two ends of the double-end stud, the two groups of threads are opposite in rotation direction, and two ends of the double-end stud penetrate through the two pressing plates respectively and are in threaded connection with the pressing plates.
In a preferred embodiment, the pad pressing structure is a long belt structure, the roller is rotatably mounted at one end of the pressing plate, which is close to the test plate, the slide block is slidably mounted above the pressing plate, one end of the pad pressing structure is fixedly connected with the guide block, the other end of the pad pressing structure bypasses the roller and is fixedly connected with the slide block, the bottom wall of the pressing plate is slidably matched with the pad pressing structure, the guide rail is fixedly mounted above the pressing plate, the slide block is slidably mounted on the guide rail, the thrust reverser is arranged between the slide block and the pressing plate, and the thrust reverser is used for providing an elastic force for the slide block, which is far away from the direction of the roller.
In a preferred embodiment, the cushion structure is a flat rubber strip, two ends of the flat rubber strip are fixedly connected with the guide block and the sliding block respectively, the flat rubber strip is of a flat structure, a hollow cavity is formed in the flat rubber strip, and thermal expansion gas is filled in the hollow cavity.
In a preferred embodiment, the pad pressing structure is a folding rubber strip, the folding rubber strip is a U-shaped folding structure, the folding rubber strip comprises an upper pressing belt, a lower pressing belt and a folding movable part, the upper pressing belt and the lower pressing belt are connected through the folding movable part, the lower pressing belt is arranged in parallel with the upper pressing belt, the folding movable part is located on one side, close to the adhesive tape to be tested, of the upper pressing belt, the protruding sealing parts are fixedly connected to one side, close to the folding movable part, of the lower pressing belt, far away from the folding movable part, of the lower pressing belt, and the two groups of protruding sealing parts are respectively in sliding fit with the lower pressing belt and the upper pressing belt.
In a preferred embodiment, an air chamber is formed between the upper pressing belt, the lower pressing belt and the two groups of convex sealing parts, the air chamber is filled with thermal expansion air, the folding movable part is provided with air holes, the upper pressing belt is fixedly connected with guide convex strips, the pressing plate is provided with guide grooves which are in sliding fit with the guide convex strips, and the guide convex strips are used for limiting the upper pressing belt to slide along the width direction of the pressing plate.
In a preferred embodiment, the one end that the clamp plate is close to the gyro wheel is provided with the clean cover, and the clean cover covers the outside of locating the gyro wheel, clean cover and clamp plate fixed connection, and the inside fixed mounting of clean cover has the scraper blade, and the scraper blade is laminated with the surface that is located the outside pad of gyro wheel and presses the structure, and the inside of clean cover still is provided with shower nozzle and wiping structure, and shower nozzle and wiping structure are all fixed in the clean cover, and the shower nozzle is used for spraying viscose dissolving agent to pad pressing the structure surface, wiping structure and pad pressing structure slip laminating.
The initial viscosity test method of the rolling ball method comprises the following steps:
step one, preparing a sample, namely obtaining a tape to be tested, and taking a sample with preset length and width as the tape to be tested;
step two, adjusting equipment, namely adjusting the inclination angle of the test board to a set angle;
step three, cleaning equipment, namely cleaning the surface of the test board and two sides of the polyester film;
step four, cleaning the steel ball, and cleaning rust-proof oil on the surface of the steel ball;
wherein, the steps are not divided into a front step and a rear step;
step five, determining an area, namely covering a polyester film in a set area on the upper part of the test board as a rolling assisting film to form a flat, bubble-free and wrinkle-free rolling assisting section, wherein a corresponding distance section below the end position of the rolling assisting section is preset as a test section;
step six, fixing the area, namely fixing one surface of the adhesive layer of the adhesive tape to be tested on the test section in an upward and smooth fit mode, and fixing the auxiliary rolling film on the auxiliary rolling section in a smooth fit mode;
step seven, heating the test board and the adhesive tape to be tested on the surface of the test board in a simulation way to be heated to be within a preset range;
step eight, testing the steel balls, namely releasing the starting point positions of the auxiliary rolling section based on the sequence of the weight or/and the volume from large to small, and obtaining the steel balls which stop moving for more than 5s in the test section;
step nine, determining the steel ball, namely, based on the steel ball obtained in the step eight, obtaining a previous steel ball and a next steel ball in the sequence corresponding to the steel ball according to the sequence from large to small in weight or/and volume, repeating a test, determining that the steel ball is a steel ball which can stop moving for more than 5 seconds in a test section for the first time, and recording data and corresponding temperature of the steel ball;
and step ten, repeating the test, adjusting the set angle or/and the heating temperature of the test board, replacing the adhesive tape to be tested, repeating the temperature-rising test part, and recording data.
The invention has the beneficial effects that: according to the invention, the actual performance parameters of the adhesive tape to be tested in a high-temperature environment can be effectively simulated and tested, the adhesive tape to be tested and the edges of the two sides of the auxiliary rolling film are pressed and fixed through the pressing plate, the adhesive tape to be tested can be prevented from curling due to temperature rise, the adhesive tape to be tested can be further ensured to be flatly and stably attached to the surface of the test board for testing in the test process, the deformation or shaking of the adhesive tape to be tested is prevented from influencing the test parameters, and the authenticity and the accuracy of the test parameters are greatly improved.
Drawings
Fig. 1 is a schematic diagram of the overall structure of the present invention.
Fig. 2 is a front view of the invention before detection.
Fig. 3 is a state diagram of a blank pressing structure when the blank pressing of the adhesive tape to be tested is started.
Fig. 4 is a state diagram of the edge pressing structure after the edge pressing of the adhesive tape to be tested is finished.
FIG. 5 is a top view of the test board when the present invention begins to crimp the tape to be tested.
FIG. 6 is a top view of the test board after the tape to be tested is pressed.
Fig. 7 is a schematic diagram showing the cooperation of the guide block and the cross bar according to the present invention.
Fig. 8 is a state diagram of the present invention in which a flat rubber strip is used to locally crimp the edge of the tape to be tested.
FIG. 9 is a view showing the state of the invention in which the flat rubber strip is used to fully crimp the edge of the tape to be tested.
FIG. 10 is a state diagram of the folded rubber strip of the present invention for full-edge pressing of the edge of the tape to be tested.
FIG. 11 is a structural view of a double-folded rubber strip according to the present invention.
Fig. 12 is a schematic overall structure of the adhesive removing mechanism of the present invention.
FIG. 13 is a flow chart of the detection method of the present invention.
The reference numerals are: 1. a test board; 11. a cross bar; 12. a ball release ring; 13. a heater; 14. a rotating block; 2. a blank pressing structure; 21. a pressing plate; 22. a roller; 23. a guide rail; 24. a slide block; 25. a thrust reverser; 26. a guide block; 27. a double-ended stud; 3. a base; 31. a screw rod; 32. a pushing block; 33. a connecting rod; 4. a pad pressing structure; 41. a flat rubber strip; 411. a hollow cavity; 42. folding the rubber strip; 421. a pressing belt is arranged; 422. pressing down the belt; 423. folding the movable part in half; 424. a convex sealing part; 425. a gas chamber; 426. ventilation holes; 427. a guide convex strip; 5. a cleaning cover; 51. a scraper; 52. a spray head; 53. a wiping structure; a. an adhesive tape to be tested; b. and (5) assisting in rolling the film.
Detailed Description
The following detailed description of the present application is provided in conjunction with the accompanying drawings, and it is to be understood that the following detailed description is merely illustrative of the application and is not to be construed as limiting the scope of the application, since numerous insubstantial modifications and adaptations of the application will be to those skilled in the art in light of the foregoing disclosure.
Referring to fig. 1 and 2 of the specification, a rolling ball method initial viscosity test device comprises a test board 1, wherein the test board 1 is obliquely arranged, the test board 1 is used for placing a tape a to be tested, a cross rod 11 and a rolling ball release ring 12 are arranged at the top end of the test board 1, the cross rod 11 is fixedly arranged on the test board 1, the rolling ball release ring 12 is movably arranged on the cross rod 11, the rolling ball release ring 12 is used for placing a steel ball, the steel ball is released when the rolling ball release ring 12 is separated from the cross rod 11, a comparison scale mark is arranged on the test board 1, a heater 13 is arranged in the test board 1, and the heater 13 is used for heating the surface of the test board 1 and a tape a to be tested on the surface of the test board 1, so that the high-temperature environment simulation of the tape a to be tested is realized;
the test board 1 is further provided with two groups of edge pressing structures 2, the two groups of edge pressing structures 2 are respectively arranged on two sides of the adhesive tape a to be tested, the edge pressing structures 2 comprise pressing boards 21, the pressing boards 21 are arranged in parallel with the test board 1, the pressing boards 21 move in the plane parallel to the test board 1 along the length and width directions of the test board 1, a positioning mechanism is arranged between the pressing boards 21 and the test board 1 and is used for fixing the relative positions of the two groups of pressing boards 21 on the surface of the test board 1, a clamping surface is formed between the pressing boards 21 and the test board 1, when the pressing boards 21 move to the edges of the adhesive tape a to be tested and the auxiliary rolling film b, the adhesive tape a to be tested and the auxiliary rolling film b are fixed on the test board 1 through the clamping surfaces between the pressing boards 21 and the test board 1, one side, close to the test board 1, of the pressing boards 21 is provided with a cushion pressing structure 4, and the cushion pressing structure 4 is attached to the surface of the adhesive tape a to be tested and the auxiliary rolling film b when the edge of the adhesive tape a to be tested is clamped by the cushion pressing structure 4.
It should be noted that, in actual operation, after the to-be-tested adhesive tape a and the rolling-assisting film b are placed on the test board 1, the pressing board 21 is adjusted to move to two side edges of the to-be-tested adhesive tape a and the rolling-assisting film b to compress and fix, then the positioning mechanism is adjusted to fix the pressing board 21, and then the detection can be started, and in detection, the heater 13 is utilized to perform high-temperature simulation, and the to-be-tested adhesive tape a is heated to 80-120 ℃ according to the simulation requirement, wherein, in order to ensure the effective performance of the pad pressing structure 4, the pad pressing structure 4 can adopt high-temperature resistant rubber materials such as acrylic ester (the long-term use temperature is 170 ℃, and the short-time use temperature can be increased to 200 ℃).
Through adopting above-mentioned technical scheme, this embodiment can effectually simulate test the actual performance parameter of the sticky tape a that awaits measuring under the high temperature environment, and press fixedly through clamp plate 21 to await measuring sticky tape a and helping the both sides edge of rolling membrane b, can avoid the sticky tape a that awaits measuring to take place to curl because of the temperature increases, and then guarantee that the laminating that awaits measuring sticky tape a can be level and smooth and stable in the test process tests on test board 1 surface, avoid await measuring sticky tape a to produce deformation or produce and rock and influence test parameter, very big improvement test parameter's authenticity and accuracy.
Further, the rolling ball release ring 12 is fixedly connected with the rotating block 14, the inside of the rotating block 14 is provided with a perforation, the transverse rod 11 penetrates through the perforation of the rotating block 14, the perforation aperture of the rotating block 14 is larger than the diameter of the transverse rod 11, and therefore the rolling ball release ring 12 can move along the width direction of the test board 1, can turn over at the top end of the test board 1, is attached to the surface of the test board 1 when the rolling ball release ring 12 is turned over to the surface of the test board 1, specifically, when in detection, the rolling ball release ring 12 is controlled to turn over and attach to the test board 1, steel balls are placed in the rolling ball release ring 12, then the tail end of the rotating block 14 is pressed, the rolling ball release ring 12 is tilted, the steel balls can be naturally released and roll downwards, the release operation of the steel balls is completed, and multiple groups of tests can be completed on the adhesive tape a to be tested of the same sample by adjusting the position of the rolling ball release ring 12 in the width direction of the test board 1.
Referring to fig. 2 of the specification, the test device further comprises a base 3, the bottom end of the test board 1 is rotatably mounted on the base 3, a push block 32 is slidably arranged on the base 3, a connecting rod 33 is rotatably mounted on the push block 32, one end, away from the push block 32, of the connecting rod 33 is rotatably connected with the test board 1, a screw rod 31 is rotatably arranged on the base 3, and the screw rod 31 penetrates through the push block 32 and is in threaded connection with the push block 32. Through the arrangement, the screw rod 31 is rotated to drive the pushing block 32 to move, so that the inclination angle of the test board 1 can be adjusted, and the test board is suitable for various different angle tests.
Referring to fig. 3, 4, 5 and 6 of the specification, the positioning mechanism comprises two groups of guide blocks 26, the guide blocks 26 are arranged at two groups, the two groups of guide blocks 26 are all installed at one end of the test board 1 close to the cross bar 11, the guide blocks 26 slide along the width direction of the test board 1, the two groups of pressing plates 21 are respectively installed on the two guide blocks 26, and referring to fig. 7 of the specification, sliding grooves are formed in the guide blocks 26, the pressing plates 21 are slidably installed in the sliding grooves of the guide blocks 26, and the pressing plates 21 slide on the guide blocks 26 along the length direction of the test board 1, so that the pressing plates 21 can move at multiple positions on the surface of the test board 1.
Referring to fig. 5 and 6 of the specification, the positioning mechanism further includes a stud 27, two ends of the stud 27 are respectively provided with a set of threads, the two sets of threads are opposite in rotation direction, two ends of the stud 27 respectively penetrate through the two pressing plates 21 and are in threaded connection with the pressing plates 21, the stud 27 adjusts the distance between the two sets of pressing plates 21 through rotation, and is self-locked by the threads, and after adjustment, the relative positions of the two sets of pressing plates 21 are fixed, so that clamping and fixing of the adhesive tape a to be tested are achieved.
Further, in the above embodiment, the cushion structure 4 is a long belt structure, referring to fig. 2, 3 and 4 of the specification, the roller 22 is rotatably mounted at one end of the pressing plate 21 near the test board 1, the slider 24 is slidably mounted above the pressing plate 21, one end of the cushion structure 4 is fixedly connected with the guide block 26, the other end of the cushion structure 4 bypasses the roller 22 and is fixedly connected with the slider 24, and the bottom wall of the pressing plate 21 is slidably matched with the cushion structure 4.
It should be noted that, before the adhesive tape a to be tested is clamped, two groups of pressing plates 21 are pulled to the oblique upper side of the test board 1, so that the pressing plates 21 leave the test board 1, and the guide rail 23 is shifted to the direction away from the test board 1, and then most of the area of the pad pressing structure 4 is pulled to the area above the pressing plates 21, when the adhesive tape a to be tested needs to be clamped, the adhesive tape a to be tested and the auxiliary rolling film b are firstly placed on the test board 1 and are aligned with the area between the two groups of pressing plates 21, and then the two groups of pressing plates 21 are pushed obliquely downwards, referring to fig. 5 and 6 of the specification, and then the two groups of rollers 22 move along the two side edges of the adhesive tape a to be tested, because one end of the pad pressing structure 4 is fixed on the guide block 26, the pad pressing structure 4 itself does not slide relative to the test board 1 and the adhesive tape a to be tested, and under the arc support of the roller 22 to the pad pressing structure 4, and the adhesive tape a to be tested and the auxiliary rolling film b do not displace, so that the adhesive tape a to be tested and the auxiliary rolling film b cannot generate displacement, and the adhesive tape a to be tested can not generate a to be gradually covered and folded and the auxiliary rolling film b, and the adhesive tape a to be tested can be stably and stably pressed on the two groups of the adhesive tape a to be tested 1, and the two sides can be stably and stably connected to the adhesive tape a to the test board 1, and the test tape a to be tested by the test film b, and the test device to be tested and the accurate to be tested and the test film can be stably and tested and the test film can be stably and stable to be tested.
Further, a guide rail 23 is fixedly installed above the pressing plate 21, a sliding block 24 is slidably installed on the guide rail 23, referring to fig. 4 of the specification, a back-pushing mechanism 25 is provided between the sliding block 24 and the pressing plate 21, and the back-pushing mechanism 25 is used for providing an elastic force for the sliding block 24 in a direction away from the roller 22, so that when the pressing plate 21 is pulled out, the sliding block 24 can automatically pull the cushion structure 4 under the pushing of the back-pushing mechanism 25, and the cushion structure 4 is prevented from being fluffy.
It should be noted that, the guide rail 23 is a long rod structure, the guide rail 23 penetrates the sliding block 24, the back-pushing mechanism 25 is preferably a spring, the spring is sleeved on the back-pushing mechanism 25 and is located at one side of the sliding block 24 close to the roller 22, so that the sliding block 24 always keeps back-pulling of the cushion structure 4 in the moving process of the pressing plate 21, and the cushion structure 4 keeps straight and cannot be loosened.
Referring to fig. 8 and 9 of the specification, the cushion structure 4 is a flat rubber strip 41, two ends of the flat rubber strip 41 are fixedly connected with the guide block 26 and the sliding block 24 respectively, the flat rubber strip 41 is a flat structure, a hollow cavity 411 is formed in the flat rubber strip 41, and thermal expansion gas is filled in the hollow cavity 411.
It should be noted that, the hollow cavity 411 may be directly filled with gas, so that the deformability and adaptability of the flat rubber strip 41 may be increased by the arrangement of the hollow cavity 411, for example, the flat rubber strip 41 may be in a half-edge pressing state shown in fig. 8 of the specification, that is, half of the flat rubber strip 41 presses the tape a to be tested, and the other half is attached to the test board 1, or may be in a full-edge pressing state shown in fig. 9 of the specification, that is, the flat rubber strip 41 is entirely pressed on the tape a to be tested, and meanwhile, due to the increased deformability of the flat rubber strip 41, the flat rubber strip 41 may be adapted to the tapes a to be tested with different thicknesses, so as to improve the practicality of the device, and by filling gas in the hollow cavity 411, when the heating and heating simulation is performed by the heater 13, the pressure of the flat rubber strip 41 may be increased in the hollow cavity 411, so as to improve the fixing effect of the tape a to be tested.
In the above embodiment, after the pressing plate 21 needs to be fixed, the subsequent operation is performed, and after a part of the to-be-tested adhesive tape a is heated, the to-be-tested adhesive tape a is softened, so that the original pressing plate 21 is loosened to fix the to-be-tested adhesive tape a, for this purpose, the embodiment further provides a technical scheme, specifically, referring to fig. 10 and 11 of the specification, the cushion pressing structure 4 is a folded rubber strip 42, the folded rubber strip 42 is a U-shaped folded structure, the folded rubber strip 42 comprises an upper pressing belt 421, a lower pressing belt 422 and a folded movable portion 423, the upper pressing belt 421 and the lower pressing belt 422 are connected through the folded movable portion 423, the lower pressing belt 422 is parallel to the upper pressing belt 421, and the folded movable portion 423 is located on one side of the upper pressing belt 421 close to the to-be-tested adhesive tape a.
Further, the side of the upper pressing belt 421 close to the folding movable portion 423 and the side of the lower pressing belt 422 far away from the folding movable portion 423 are fixedly connected with the convex sealing portions 424, the two groups of convex sealing portions 424 are respectively in sliding fit with the lower pressing belt 422 and the upper pressing belt 421, an air chamber 425 is formed between the upper pressing belt 421, the lower pressing belt 422 and the two groups of convex sealing portions 424 under the sealing of the two groups of convex sealing portions 424, thermal expansion gas is filled in the air chamber 425, the folding movable portion 423 is provided with air holes 426, the air holes 426 are used for ensuring that the space between the folding movable portion 423 and the nearby convex sealing portions 424 is communicated with an external space, pressure difference is not generated due to deformation, the upper pressing belt 421 is fixedly connected with guide convex strips 427, guide grooves which are in sliding fit with the guide convex strips 427 are arranged on the pressing plate 21, and the guide convex strips 427 are used for limiting the sliding movement of the upper pressing belt 421 along the width direction of the pressing plate 21, so that the upper pressing belt 421 and the pressing plate 21 can only slide along the length direction of the pressing plate 21 are ensured.
It should be noted that after the double-folded rubber strip 42 extrudes the to-be-tested adhesive tape a, the upper pressing strip 421 is attached to the pressing plate 21, and the upper pressing strip 421 cannot move in the width direction of the pressing plate 21, meanwhile, the lower pressing strip 422 is in contact with and adhered to the adhesive layer of the to-be-tested adhesive tape a to form a fixation, so that the lower pressing strip 422 cannot move in the width direction relative to the to-be-tested adhesive tape a, after the to-be-tested adhesive tape a is fixed, and after the heater 13 is used for heating and heating, the air in the air chamber 425 expands, and because the position of the raised sealing part 424 on the upper pressing strip 421 is fixed, the raised sealing part 424 on the inflated air pushes the lower pressing strip 422 to move to the outer side of the to-be-tested adhesive tape a along the width direction, and then through the cooperation of the two groups of the pressing plates 21 and the two groups of double-folded rubber strips 42, after heating, the two side edges of the to-be-tested adhesive tape a can form a micro pulling, so that the softened to-be-tested adhesive tape a is straightened, and the stability and the accuracy of the to-be-tested adhesive tape a are further ensured during testing.
In the above embodiment, the pad pressing structure 4 will contact with the adhesive layer of the adhesive tape a to be tested, so when the test is completed and the adhesive tape a to be tested is separated from the pad pressing structure 4 by pulling the pressing plate 21 reversely, some adhesive will adhere to the surface of the pad pressing structure 4 to affect the subsequent use, therefore, this embodiment provides the following technical scheme, specifically, referring to fig. 12 of the specification, a cleaning cover 5 is disposed at one end of the pressing plate 21 close to the roller 22, the cleaning cover 5 covers the roller 22, the cleaning cover 5 is fixedly connected with the pressing plate 21, a scraping plate 51 is fixedly mounted inside the cleaning cover 5, the scraping plate 51 is adhered to the surface of the pad pressing structure 4 located outside the roller 22, and scrapes the adhesive on the surface of the pad pressing structure 4 when the pad pressing structure 4 moves relatively, a spray head 52 and a wiping structure 53 are disposed inside the cleaning cover 5, both the spray head 52 and the wiping structure 53 are fixed in the cleaning cover 5, the spray adhesive on the surface of the pad pressing structure 4 for dissolving the adhesive remained on the pad pressing structure 4, the wiping structure 53 is adhered to the pad pressing structure 4, and the wiping structure is preferably adhered to the pad pressing structure 53.
It should be noted that, the shower nozzle 52 is connected with the pump, the pump is connected with viscose dissolving agent, carry viscose dissolving agent and blowout to shower nozzle 52 through the pump, make the viscose that remains on the pad pressing structure 4 dissolve, after the test, when pushing out clamp plate 21, the guide rail 23 is pushed back the slider 24 and is pulled back to pad pressing structure 4 under the elasticity effect of pushing back mechanism 25, make pad pressing structure 4 in the inside motion of clean cover 5, thereby make scraper blade 51 strike off the viscose on pad pressing structure 4 surface, then utilize shower nozzle 52 to spray viscose dissolving agent to pad pressing structure 4 surface, make the viscose that remains on the pad pressing structure 4 dissolve, reuse the wiping structure 53 to wipe the viscose dissolving agent that remains.
Referring to fig. 13 of the specification, the invention also provides a method for testing initial viscosity of a rolling ball method, which specifically comprises the following steps:
firstly, preparing a sample, namely taking a tape to be tested, and taking a sample with the length of 200mm and the width of 60mm as a tape a to be tested;
step two, adjusting equipment, namely placing the equipment in a horizontal position, and adjusting the inclination angle of the test board 1 to 30 degrees;
cleaning equipment, namely scrubbing the surface of the test board 1 and the two sides of the polyester film by using absorbent gauze dipped with a cleaning agent, and cleaning by using the gauze;
cleaning the steel ball, namely putting the steel ball with the rust-preventive oil removed into a container with a detergent for soaking for a plurality of minutes, taking out, repeatedly cleaning and wiping with a clean cleaning agent and gauze, then wiping clean with a clean gauze, and taking the cleaned steel ball by using clean tweezers made of bamboo (wood, bone) and other tools;
fifthly, determining an area, placing one surface of an adhesive layer of the adhesive tape a to be tested on the test board 1 upwards, and covering a 100mm area on the upper part of the test board 1 with a polyester film as a rolling assisting film b to form a rolling assisting section, wherein the rolling assisting section is flat and free of defects such as bubbles and wrinkles;
step six, fixing the two side edges of the adhesive tape a to be tested and the auxiliary rolling film b on the test board 1 by using two groups of pressing boards 21 in the fixing area, so that the adhesive tape a to be tested is flatly attached to the test board 1, and the range of 100mm below the auxiliary rolling section is the test section;
step seven, heating the test board 1 and the adhesive tape a to be tested on the surface of the test board 1 by using a heater 13 in a simulated heating mode to 60-80 ℃;
step eight, testing the steel balls, namely pre-selecting the largest steel ball, clamping the steel ball into a rolling ball release ring 12 by using tweezers, adjusting the position of the rolling ball release ring 12, enabling the center of the steel ball to be positioned on the initial line of a rolling assisting section before formal test, enabling a sample to be tested for multiple times, adjusting the left and right positions of a ball placing device, enabling the track of each rolling of the steel ball to be misaligned, turning up and opening the rolling ball release ring 12, enabling the steel ball to release and roll off, observing whether the rolled steel ball is stuck in a test section (stopping moving for less than 5 seconds), and taking the steel balls with different ball numbers from large to small, and performing proper tests until the largest ball number steel ball which can be stuck in the test section is found;
and step nine, determining the steel balls, namely taking the steel ball with the largest ball number and two balls with the sizes which are connected with the steel ball with the largest ball number, and respectively performing a test on the same sample to confirm the steel ball with the largest ball number.
And step ten, repeating the test, adjusting the set angle or/and the heating temperature of the test board 1, replacing the adhesive tape a to be tested, repeating the temperature rise test part, and recording data.
In the test method, 3 samples can be taken, and ball rolling tests can be carried out once by using the largest ball number steel ball. If a test sample cannot stick the steel ball, the steel ball with the ball number smaller than that of the test sample can be used for a test, and if the test sample cannot stick, the test sample must be retested, and the test result is expressed by the ball number of the steel ball.
Of the steel balls stuck by each of the 3 samples, if 3 are all the largest ball number steel balls, or two are the largest ball number steel balls, and the ball number of the other is only smaller than the largest ball number, the test result is expressed in the largest ball number; if one is the largest ball number and the other two are only smaller than the largest ball number, the test result is expressed as a ball number that is only smaller than the largest ball number.
The above experiments were carried out following GB/T4852-2002 and related standards.
The foregoing examples illustrate only a few embodiments of the invention and are described in detail herein without thereby limiting the scope of the invention. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the invention, which are all within the scope of the invention.
Claims (5)
1. The utility model provides a ball method initial adhesion test equipment which characterized in that: the automatic testing device comprises a testing board (1), wherein the testing board (1) is used for placing an adhesive tape (a) to be tested, a cross rod (11) and a rolling ball release ring (12) are arranged at the top end of the testing board (1), the cross rod (11) is fixedly arranged on the testing board (1), the rolling ball release ring (12) is movably arranged on the cross rod (11), the rolling ball release ring (12) is used for placing a steel ball, and a heater (13) is arranged in the testing board (1);
the test board (1) is also provided with two groups of edge pressing structures (2), the edge pressing structures (2) comprise pressing boards (21), the pressing boards (21) are arranged in parallel with the test board (1), a positioning mechanism is arranged between the pressing boards (21) and the test board (1), the positioning mechanism is used for fixing the relative positions of the two groups of pressing boards (21) on the surface of the test board (1), and when the pressing boards (21) move to the edge of an adhesive tape (a) to be tested, the adhesive tape (a) to be tested is edge-pressed and fixed;
one side of the pressing plate (21) close to the test plate (1) is provided with a pressing structure (4), and the pressing structure (4) is attached to the surfaces of the adhesive tape (a) to be tested and the auxiliary rolling film (b) when the edge of the adhesive tape (a) to be tested is clamped by the pressing plate (21);
the positioning mechanism comprises guide blocks (26), wherein the guide blocks (26) are arranged in two groups, the two groups of guide blocks (26) are arranged at one end, close to a cross rod (11), of the test board (1), the guide blocks (26) slide along the width direction of the test board (1), two groups of pressing plates (21) are respectively arranged on the two guide blocks (26), sliding grooves are formed in the guide blocks (26), the pressing plates (21) are slidably arranged in the sliding grooves of the guide blocks (26), the pressing plates (21) slide on the guide blocks (26) along the length direction of the test board (1), the positioning mechanism further comprises double-headed studs (27), a group of threads are respectively arranged at two ends of each double-headed stud (27), the two ends of each double-headed stud (27) penetrate through the two pressing plates (21) respectively and are in threaded connection with the pressing plates (21);
the test device is characterized in that the pad pressing structure (4) is of a long strip-shaped structure, one end of the pressing plate (21) close to the test plate (1) is rotatably provided with a roller (22), a sliding block (24) is slidably arranged above the pressing plate (21), one end of the pad pressing structure (4) is fixedly connected with the guide block (26), the other end of the pad pressing structure (4) bypasses the roller (22) and is fixedly connected with the sliding block (24), the bottom wall of the pressing plate (21) is slidably matched with the pad pressing structure (4), a guide rail (23) is fixedly arranged above the pressing plate (21), the sliding block (24) is slidably arranged on the guide rail (23), a thrust reverser (25) is arranged between the sliding block (24) and the pressing plate (21), and the thrust reverser (25) is used for providing an elastic force far away from the roller (22) to the sliding block (24).
The cushion pressing structure (4) is a folding rubber strip (42), the folding rubber strip (42) is of a U-shaped folding structure, the folding rubber strip (42) comprises an upper pressing belt (421), a lower pressing belt (422) and a folding movable part (423), the upper pressing belt (421) and the lower pressing belt (422) are connected through the folding movable part (423), the lower pressing belt (422) and the upper pressing belt (421) are arranged in parallel, the folding movable part (423) is located on one side, close to an adhesive tape (a) to be detected, of the upper pressing belt (421), a convex sealing part (424) is fixedly connected to one side, close to the folding movable part (423), of the lower pressing belt (422), away from the folding movable part (423), and the two groups of convex sealing parts (424) are respectively in sliding fit with the lower pressing belt (422) and the upper pressing belt (421).
Go up and press area (421), push down and be formed with air chamber (425) between area (422) and two sets of protruding sealing part (424), the inside of air chamber (425) is filled with thermal expansion gas, bleeder vent (426) have been seted up on fifty percent discount movable part (423), fixedly connected with direction sand grip (427) on going up press area (421), be provided with on clamp plate (21) with direction sand grip (427) sliding fit's guide slot, direction sand grip (427) are used for restricting to go up press area (421) and produce the slip along clamp plate (21) width direction.
2. The initial tackiness test device of claim 1, wherein: the ball release ring (12) is fixedly connected with a rotating block (14), a perforation is formed in the rotating block (14), the cross rod (11) penetrates through the perforation of the rotating block (14), the perforation aperture of the rotating block (14) is larger than the diameter of the cross rod (11), and the ball release ring (12) is attached to the surface of the test board (1) when being overturned to the surface of the test board (1).
3. The initial tackiness test device of claim 2, wherein: the testing equipment further comprises a base (3), the bottom end of the testing board (1) is rotatably mounted on the base (3), a push block (32) is slidably arranged on the base (3), a connecting rod (33) is rotatably mounted on the push block (32), one end of the connecting rod (33), far away from the push block (32), is rotatably connected with the testing board (1), a screw rod (31) is rotatably arranged on the base (3), and the screw rod (31) penetrates through the push block (32) and is in threaded connection with the push block (32).
4. A ball method initial tack test device according to claim 3, wherein: the cleaning device is characterized in that a cleaning cover (5) is arranged at one end of the pressing plate (21) close to the roller (22), the cleaning cover (5) is covered outside the roller (22), the cleaning cover (5) is fixedly connected with the pressing plate (21), a scraping plate (51) is fixedly arranged inside the cleaning cover (5), the scraping plate (51) is attached to the surface of a pad pressing structure (4) located outside the roller (22), a spray head (52) and a wiping structure (53) are further arranged inside the cleaning cover (5), the spray head (52) and the wiping structure (53) are both fixed in the cleaning cover (5), the spray head (52) is used for spraying adhesive to the surface of the pad pressing structure (4), and the wiping structure (53) is attached to the pad pressing structure (4) in a sliding mode.
5. A method of testing a ball-based initial tackiness test device according to claim 1, comprising the steps of:
step one, preparing a sample, namely obtaining a tape to be tested, and taking a sample with preset length and width as the tape (a) to be tested;
step two, adjusting equipment, namely adjusting the inclination angle of the test board (1) to a set angle;
step three, cleaning equipment, namely cleaning the surface of the test board (1) and two sides of the polyester film;
step four, cleaning the steel ball, and cleaning rust-proof oil on the surface of the steel ball;
wherein, the steps are not divided into a front step and a rear step;
step five, determining an area, namely covering a polyester film in a set area on the upper part of the test board (1) as a rolling assisting film (b) to form a rolling assisting section which is flat, bubble-free and wrinkle-free, wherein a corresponding distance section below the end position of the rolling assisting section is preset as a test section;
step six, fixing the area, namely fixing one surface of the adhesive layer of the adhesive tape (a) to be tested on the test section in an upward and smooth fit mode, and fixing the rolling assisting film (b) on the rolling assisting section in a smooth fit mode;
step seven, heating the test board (1) and the adhesive tape (a) to be tested on the surface of the test board (1) in a simulation way to a preset range;
step eight, testing the steel balls, namely releasing the starting point positions of the auxiliary rolling section based on the sequence of the weight or/and the volume from large to small, and obtaining the steel balls which stop moving for more than 5s in the test section;
step nine, determining the steel ball, namely, based on the steel ball obtained in the step eight, obtaining a previous steel ball and a next steel ball in the sequence corresponding to the steel ball according to the sequence from large to small in weight or/and volume, repeating a test, determining that the steel ball is a steel ball which can stop moving for more than 5 seconds in a test section for the first time, and recording data and corresponding temperature of the steel ball;
and step ten, repeating the test, adjusting the set angle or/and the heating temperature of the test board (1), replacing the adhesive tape (a) to be tested, repeating the temperature rise test part, and recording data.
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| CN202311689182.3A CN117388166B (en) | 2023-12-11 | 2023-12-11 | Initial viscosity test equipment and method by ball method |
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| CN202311689182.3A CN117388166B (en) | 2023-12-11 | 2023-12-11 | Initial viscosity test equipment and method by ball method |
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| CN117388166B true CN117388166B (en) | 2024-03-08 |
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