Viscosity detection device for water-based pressure-sensitive adhesive

Abstract

The invention relates to the technical field of viscosity detection, in particular to a viscosity detection device for a water-based pressure-sensitive adhesive, which comprises a base provided with an operation table top and a first positioning groove; the bracket is arranged on the base; the measuring cylinder is rotationally arranged on the bracket; the rotating mechanism is arranged on the bracket and is connected with the measuring cylinder; the measuring mechanism is arranged on the bracket, is connected with the measuring cylinder and is used for measuring the viscosity of the water-based pressure-sensitive adhesive; the accommodating cylinder is placed on the base, is used for accommodating a water-based pressure-sensitive adhesive, corresponds to the measuring cylinder and is provided with scale marks; the positioning mechanism comprises a first positioning block arranged on the containing cylinder, and the first positioning block is matched with the first positioning groove. The method has the effect of improving the accuracy of the test result.

Description

Technical Field

[0001] The present application relates to the technical field of viscosity detection, and in particular to a viscosity detection device for a water-based pressure-sensitive adhesive. Background Art

[0002] At present, water-based pressure-sensitive adhesives, as an important adhesive material, are widely used in various occasions that require rapid and repeated bonding, such as packaging, labeling, medical, electronics and other fields. Viscosity, as one of the key performance indicators of water-based pressure-sensitive adhesives, has an important impact on its application effect and service life. Too high viscosity may lead to difficulty in gluing and uneven bonding, while too low viscosity may lead to insufficient bonding strength and easy falling off. Therefore, it is of great significance to accurately detect the viscosity of water-based pressure-sensitive adhesives.

[0003] In the prior art, when the viscosity of a water-based pressure-sensitive adhesive is usually tested, the water-based pressure-sensitive adhesive sample is first poured into a container with a scale to a specified scale, and the container is placed in a constant temperature water tank for about 10-20 minutes; the rotating end of the rotational viscometer is inserted into the container and the rotational viscometer is started; after a while, the viscosity value of the adhesive is measured after the rotating end of the rotational viscometer rotates stably; however, during the measurement, when the measuring end of the rotational viscometer is close to one side of the container, there is less water-based pressure-sensitive adhesive on one side, and measurement errors are prone to occur, which in turn leads to inaccurate test results. Summary of the invention

[0004] In order to maintain the accuracy of the detection results, the present application provides a viscosity detection device for a water-based pressure-sensitive adhesive.

[0005] The present application provides a viscosity detection device for a water-based pressure-sensitive adhesive, which adopts the following technical solution: A viscosity detection device for a water-based pressure-sensitive adhesive, comprising: The base is formed with an operating table and has a first positioning groove; A bracket, arranged on the base; A measuring cylinder is rotatably disposed on the bracket; A rotating mechanism, disposed on the bracket and connected to the measuring cylinder; A measuring mechanism, disposed on the bracket and connected to the measuring cylinder, for measuring the viscosity of the water-based pressure-sensitive adhesive; A containing cylinder, placed on the base, used to contain the water-based pressure-sensitive adhesive, corresponding to the measuring cylinder, and provided with scale lines; The positioning mechanism comprises a first positioning block arranged on the accommodating tube, wherein the first positioning block cooperates with the first positioning groove.

[0006] By adopting the above technical solution, the water-based pressure-sensitive adhesive is poured into the container, which is then placed in a constant temperature water tank for about 10-20 minutes. The scale lines on the container can help users accurately control the amount of glue, ensuring that the volume of glue is consistent for each test, thereby improving the accuracy of the test.

[0007] Place the accommodating tube on the operating table of the base, and ensure that the first positioning block on the accommodating tube accurately matches the first positioning groove on the base. This positioning method can ensure the stability of the position of the accommodating tube during the test, prevent test errors caused by shaking or movement, and can align the measuring tube and the accommodating tube, reducing the uneven distribution of the pressure-sensitive adhesive around the measuring tube, which affects the test results.

[0008] Start the rotating mechanism, which is connected to the measuring cylinder, and drives the measuring cylinder to start rotating. The rotation of the measuring cylinder is one of the key steps in the viscosity test. The flow state of the glue in actual application can be simulated through rotation.

[0009] The measuring mechanism is connected to the measuring cylinder and is used to measure the viscosity of the water-based pressure-sensitive adhesive during the rotation process in real time. The measuring mechanism may use various sensors or instruments, such as torque sensors, speed sensors, etc., to accurately capture the changes in the resistance of the glue during rotation, so as to calculate its viscosity; as the measuring cylinder rotates, the water-based pressure-sensitive adhesive is subjected to shear force in the measuring cylinder, and its viscosity characteristics are displayed. The measuring mechanism will record these data in real time for subsequent analysis.

[0010] After the test is completed, the user can understand the viscosity characteristics of the water-based pressure-sensitive adhesive by reading the data provided by the measuring mechanism. These data can be used to evaluate the performance of the glue, optimize the formula or adjust the production process, etc. The design of the containing cylinder and the measuring cylinder makes the test process simple, fast and easy to operate. At the same time, due to the use of auxiliary facilities such as positioning mechanisms and scale lines, the accuracy and reliability of the test results have also been significantly improved.

[0011] Optionally, the positioning mechanism further includes: The positioning guard frame is arranged on the bracket, located outside the measuring tube, and abuts against the inner wall of the accommodating tube.

[0012] By adopting the above technical solution, the accommodating cylinder is placed on the operating table of the base, and it is ensured that the first positioning block on the accommodating cylinder accurately matches the first positioning groove on the base. At this time, the positioning guard should lightly abut against the inner wall of the accommodating cylinder to form an additional stable support; the rotating mechanism is started, and the rotating mechanism drives the measuring cylinder to start rotating. Due to the presence of the positioning guard, the measuring cylinder is more stable during the rotation process, reducing the test error caused by shaking, and making the pressure-sensitive adhesive on the circumference of the measuring cylinder evenly distributed, further reducing the measurement error.

[0013] Optionally, a fixing frame is provided on the base, and the bracket slides on the fixing frame in a vertical direction. A sliding component is provided on the fixing frame, and the sliding component is connected to the bracket to drive the bracket to slide.

[0014] By adopting the above technical solution, the accommodating cylinder is placed on the operating table of the base, and it is ensured that the first positioning block on the accommodating cylinder accurately matches the first positioning groove on the base, and then the bracket is driven toward the base through the sliding assembly, so that the measuring cylinder is inserted into the accommodating cylinder. At this time, the positioning guard abuts against the inner wall of the accommodating cylinder, and then the rotating mechanism is started to drive the measuring cylinder to rotate for viscosity detection; the design of the fixed frame and the sliding assembly allows the bracket to slide freely in the vertical direction, thereby improving the flexibility of the testing device; the user can adjust the height of the bracket as needed to adapt to different testing requirements and accommodating cylinder sizes.

[0015] Optionally, a scraper is formed on the side wall of the positioning guard frame abutting against the accommodating tube, and the positioning guard frame is rotatably connected to the bracket; a switching mechanism is provided on the bracket, and the switching mechanism is connected to the measuring tube or the positioning guard frame.

[0016] By adopting the above technical solution, before conducting the test, the rotating mechanism can be switched to connect with the positioning guard through the switching mechanism, and then the inner wall of the accommodating tube can be cleaned with the scraper on the positioning guard to reduce the adhesion of the pressure-sensitive adhesive on the inner wall of the accommodating tube, and then the test can be carried out; or after the test is completed, the inner wall of the accommodating tube can be cleaned through the positioning guard to facilitate the subsequent detection of the next glue.

[0017] Optionally, the switching mechanism includes: A first gear connected to the rotating mechanism; A second gear, rotating on the bracket and connected to the measuring cylinder; A third gear, rotatably disposed on the bracket and coaxial with the second gear; A sliding shaft is slidably and rotatably disposed on the bracket and slides along the axial direction of the measuring cylinder; a fourth gear, which slides and rotates on the bracket through the sliding shaft, and is always meshed with the first gear, and is meshed with the second gear or the third gear; a fifth gear, rotatably disposed on the bracket and meshing with the third gear; The gear ring rotates on the bracket, meshes with the fifth gear, and is connected to the positioning guard frame.

[0018] By adopting the above technical solution, when performing detection, the position of the sliding shaft is adjusted so that the first gear is meshed with the second gear through the fourth gear, and then the first gear is driven to rotate by the rotating mechanism, the first gear drives the second gear to rotate through the fourth gear, and the second gear drives the measuring tube to rotate. After the detection is completed, when cleaning the accommodating tube, the position of the sliding shaft is first adjusted so that the first gear is meshed with the third gear through the fourth gear, and then the positioning guard is driven to rotate in the opposite direction through the gear ring and the fifth gear, so as to reduce the bonding strength between the pressure-sensitive adhesive and the inner wall of the accommodating tube, and then the cleaning is performed; the design of the switching mechanism enables the test device to be flexibly adjusted according to different test requirements and glue characteristics; by adjusting the position of the sliding shaft, the measuring tube or the positioning guard can be selectively rotated, or rotated at the same time but at different speeds; this flexibility improves the diversity and accuracy of the test.

[0019] Optionally, a coupling assembly is provided on the third gear, and the coupling assembly includes: A sliding sleeve is slidably and rotatably disposed at the axis of the third gear, is slidably connected to the second gear, and is slidably and rotatably connected to the bracket; A key block, disposed on the sliding sleeve, and capable of being connected with the third gear key as the sliding sleeve slides; A pressure ring, arranged on the sliding sleeve; The abutment plate is arranged on the sliding shaft and can abut against the pressing ring. With the extrusion of the sliding shaft, the pressing ring and the sliding sleeve are driven to slide.

[0020] By adopting the above technical solution, in special use cases, or before detection, the position of the sliding shaft can be adjusted so that the abutment plate drives the pressure ring to slide, the sleeve slides and drives the key block to connect with the second gear key, so that the second gear and the third gear rotate coaxially, and then the first gear is driven to rotate by the rotating mechanism, and the measuring tube and the positioning guard frame are driven to rotate through the fourth gear and the ring gear, so as to disturb the pressure-sensitive adhesive and make it more evenly distributed, which is convenient for subsequent detection; or during cleaning, through the above operation, when the two rotate in opposite directions, this relative movement will generate shear force between the colloidal solution and the inner wall of the tube, which is helpful to peel off and remove dirt and impurities attached to the inner wall of the tube.

[0021] Optionally, the coupling assembly further comprises: The reset plate is arranged on the sliding shaft and located at the other side of the pressure ring. There is a movement gap between the reset plate and the abutment plate. The reset plate can slide along with the sliding shaft, abut against the pressure ring, and drive the pressure ring to slide.

[0022] By adopting the above technical solution and setting the reset plate, the pressure ring can be easily reset, so that the key block is separated from the second gear, which makes it easier to use the measuring tube or the positioning guard alone.

[0023] Optionally, the accommodating tube includes: The straight tube part is in a hollow cylindrical shape and is formed with a first accommodating cavity, the scale is formed on the inner wall of the first accommodating cavity, and a clamping groove is opened on the outer wall; A conical cylinder portion connected to the first positioning block to form a second accommodating cavity having a cone shape and communicating with the first accommodating cavity; The clamping block is arranged on the conical cylinder portion and is clamped with the clamping groove.

[0024] By adopting the above technical solution, after the test is completed, the internal pressure-sensitive adhesive is poured out, and then the conical cylinder and the straight cylinder are separated, and then the inside is cleaned. The split design facilitates the cleaning of the accommodating cylinder, and can reduce the residual pressure-sensitive adhesive and the influence on the test results.

[0025] Optionally, a flow rate mechanism is provided at one end of the accommodating cylinder away from the measuring cylinder, and the flow rate mechanism comprises: A discharge pipe is arranged at one end of the accommodating cylinder away from the measuring cylinder; A containing cylinder is arranged on the base, used for receiving the water-based pressure-sensitive adhesive, and is provided with a pressure sensor and a timer, wherein the timer is connected to the pressure sensor by an electrical signal; The rubber sleeve is sleeved on the discharge pipe and is used for blocking or opening the discharge pipe.

[0026] By adopting the above technical solution, before the test starts, first ensure that the containing cylinder, the flow rate mechanism and the entire test device have been correctly assembled and placed on the base; the containing cylinder is loaded with an appropriate amount of water-based pressure-sensitive adhesive or other materials to be tested, and has been connected to the power system of the test device through components such as the measuring cylinder and the coupling assembly; the containing cylinder is set on the base, and a pressure sensor and a timer are set inside the cylinder; the pressure sensor is used to measure the gravity generated when the water-based pressure-sensitive adhesive flows out and the gravity increment during the flow process, and the timer is used to record the outflow time; the rubber sleeve is set on the discharge pipe, and is initially in a blocked state to prevent the water-based pressure-sensitive adhesive from flowing out before the test starts.

[0027] When the test device is started, the power system starts to drive the containing cylinder to rotate. As the rotation proceeds, the water-based pressure-sensitive adhesive begins to flow under the action of shear force. When the test is completed, wait for the pressure-sensitive adhesive to stabilize, then open the rubber sleeve to allow the water-based pressure-sensitive adhesive to flow out of the discharge pipe. After the water-based pressure-sensitive adhesive flows out, it enters the containing cylinder. During the outflow process, the pressure sensor measures and records the gravity and gravity increment generated during the outflow in real time. At the same time, the timer starts timing to record the time required for the water-based pressure-sensitive adhesive to flow out of the discharge pipe to reach a predetermined pressure or flow rate. By measuring the relationship between the gravity change and the outflow time of a specified volume of pressure-sensitive adhesive, the flow rate characteristics of the water-based pressure-sensitive adhesive can be calculated to determine the viscosity, which is then compared or averaged with the viscosity measured by rotation to obtain the true viscosity.

[0028] Optionally, a vibration block is provided on the accommodating tube, and the vibration block abuts against a side wall of the positioning guard frame to rub the positioning guard frame, so that the positioning guard frame vibrates.

[0029] By adopting the above technical solution and setting the vibration block, the positioning guard contacts the vibration block and vibrates during cleaning or before detection, thereby reducing the adhesion between the pressure-sensitive adhesive and the inner wall of the accommodating tube or making the distribution of the pressure-sensitive adhesive more uniform.

[0030] In summary, the present application includes at least one of the following beneficial technical effects: 1. Place the accommodating tube on the operating table of the base, and ensure that the first positioning block on the accommodating tube is accurately matched with the first positioning groove on the base; this positioning method can ensure the stability of the position of the accommodating tube during the test, prevent test errors caused by shaking or movement, and can align the measuring tube and the accommodating tube, reducing the uneven distribution of the pressure-sensitive adhesive around the measuring tube, which may affect the test results; 2. The design of the switching mechanism enables the test device to be flexibly adjusted according to different test requirements and glue characteristics; by adjusting the position of the sliding shaft, the measuring cylinder or the positioning bracket can be selectively rotated, or rotated at the same time but at different speeds; this flexibility improves the diversity and accuracy of the test; 3. By setting the vibration block, during cleaning or before testing, the positioning guard contacts the vibration block and vibrates, thereby reducing the adhesion between the pressure-sensitive adhesive and the inner wall of the accommodating tube or making the distribution of the pressure-sensitive adhesive more uniform. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is an overall structural diagram of the detection device in the embodiment of the present application; Figure 2 is a structural diagram of a sliding assembly in an embodiment of the present application; Figure 3 is a cross-sectional view of a bracket in an embodiment of the present application; Figure 4 is a structural diagram of a coupling assembly in an embodiment of the present application; Figure 5 It is a cross-sectional view of the third gear and the second gear in the embodiment of the present application.

[0032] Figure numerals: 100, base; 210, bracket; 211, installation cavity; 220, fixing frame; 230, sliding assembly; 231, sliding motor; 232, adjusting screw; 233, slider; 240, vibration block; 300, measuring cylinder; 400, rotating mechanism; 410, servo motor; 420, connecting shaft; 500, accommodating cylinder; 510, straight cylinder; 511, clamping groove; 520, conical cylinder; 530, clamping block; 600, positioning mechanism; 610, first positioning block; 620, positioning guard frame; 630, positioning bracket; 631, first A positioning groove; 640, a scraper; 700, a switching mechanism; 710, a first gear; 720, a second gear; 721, a second sliding hole; 730, a third gear; 731, a keyway; 740, a sliding shaft; 750, a fourth gear; 760, a fifth gear; 770, a gear ring; 780, a coupling assembly; 781, a sliding sleeve; 782, a key block; 783, a pressure ring; 784, abutment plate; 785, a reset plate; 786, a connecting rod; 790, a connecting frame; 800, a flow rate mechanism; 810, a discharge pipe; 820, a containing tube; 830, a rubber sleeve. DETAILED DESCRIPTION

[0033] The following combination Figures 1 to 5 This application is described in further detail.

[0034] This embodiment discloses a viscosity detection device for a water-based pressure-sensitive adhesive.

[0035] Reference Figure 1 The viscosity detection device of water-based pressure-sensitive adhesive comprises: a base 100 placed on a laboratory table, a fixing frame 220 arranged on the base 100, a bracket 210 sliding on the fixing frame 220, a sliding assembly 230 arranged on the fixing frame 220 for driving the bracket 210 to slide, a rotating mechanism 400 arranged on the bracket 210, a measuring cylinder 300 rotatably arranged on the bracket 210 and connected to the rotating mechanism 400, a measuring mechanism arranged on the bracket 210 and connected to the measuring cylinder 300, a positioning mechanism 600 arranged on the base 100, and a containing cylinder 500 connected to the positioning mechanism 600. When performing the detection, firstly pour the water-based pressure-sensitive adhesive into the containing cylinder 500, then put it into a constant temperature bath, keep it warm for 10-20 minutes, then take it out, connect it to the base 100 through the positioning mechanism 600, then use the rotating mechanism 400 to drive the measuring cylinder 300 to rotate, and record the detection result through the measuring mechanism.

[0036] Reference Figure 2The sliding assembly 230 includes a sliding motor 231 fixedly connected to the fixed frame 220, an adjusting screw 232 is connected to the output shaft of the sliding motor 231, the adjusting screw 232 is rotatably connected to the fixed frame 220, a sliding groove is provided on the fixed frame 220, the sliding groove is vertically provided, a slider 233 is slidingly connected in the sliding groove, and the slider 233 is fixedly connected to the bracket 210; the adjusting screw 232 passes through the slider 233 and is threadedly connected to the slider 233, and the slider 233 is driven to slide as the adjusting screw 232 rotates.

[0037] Reference Figures 2 to 5 , a mounting cavity 211 is provided on the bracket 210, the rotating mechanism 400 includes a servo motor 410, the servo motor 410 is fixedly connected in the mounting cavity 211 of the bracket 210, the output shaft of the servo motor 410 is connected to a connecting shaft 420, the measuring mechanism is a torque sensor, and the torque sensor is connected to the connecting shaft 420; the connecting shaft 420 is connected to the measuring cylinder 300 through a switching mechanism 700, the switching mechanism 700 includes a first gear 710 rotatably connected in the mounting cavity 211 and coaxially connected to the connecting shaft 420, a connecting frame 790 is fixedly connected to the inner wall of the mounting cavity 211, a third gear 730 and a second gear 720 are rotatably connected to the connecting frame 790, the second gear 720 is located on the side of the mounting cavity 211 close to the base 100, and is coaxially connected to the measuring cylinder 300, the axis of the third gear 730 coincides with the axis of the second gear 720, and the third gear 730 has the same structure as the second gear 720; a sliding shaft 740 is slidably connected to the inner wall of the installation cavity 211, and the sliding shaft 740 extends through the side wall of the installation cavity 211 to the outside of the bracket 210, and the sliding direction is parallel to the rotation axis of the measuring cylinder 300. A fourth gear 750 is coaxially fixedly connected to the sliding shaft 740, and the fourth gear 750 is divided into two sections, one section of the fourth gear 750 is always meshed with the first gear 710, and the teeth slide against each other, and the other section of the fourth gear 750 can mesh with the second gear 720; a ring gear 770 is rotatably connected to the bracket 210, and the teeth of the ring gear 770 face inward, and a fifth gear 760 is rotatably connected in the installation cavity 211, and the fifth gear 760 meshes with the ring gear 770; the third gear 730 can mesh with the fourth gear 750 away from the first gear 710, and the third gear 730 meshes with the fifth gear 760.

[0038] In order to facilitate the synchronous rotation of the third gear 730 and the second gear 720, a first sliding hole is provided on the rotating shaft of the third gear 730, and the axis of the first sliding hole coincides with the axis of the third gear 730; a coupling assembly 780 is provided on the third gear 730, and the coupling assembly 780 includes a sliding sleeve 781 that is slidingly connected in the first sliding hole, and the sliding sleeve 781 is rotatably connected to the first sliding hole, and the sliding sleeve 781 is rotatably connected to the upper top wall of the installation cavity 211; a first sliding hole is provided on the rotating shaft of the second gear 720 There are two sliding holes 721, and the sliding sleeve 781 passes through and is only slidingly connected to the second sliding hole 721; a key block 782 is fixedly connected to the sliding sleeve 781, and a key groove 731 is provided on the third gear 730, and the key block 782 can slide into the key groove 731 and engage with the key groove 731; a connecting rod 786 is fixedly connected to the top wall of the installation cavity 211, and a limiting hole is provided on the connecting rod 786 in the vertical direction, and one end of the sliding sleeve 781 away from the second gear 720 and the third gear 730 slides and is rotatably connected in the limiting hole.

[0039] In order to facilitate the sliding of the sliding sleeve 781, a pressure ring 783 is coaxially fixedly connected to the sliding sleeve 781, and the pressure ring 783 is located between the second gear 720 and the third gear 730. An abutment plate 784 is fixedly connected to the sliding shaft 740, and the abutment plate 784 is located between the pressure ring 783 and the third gear 730. The abutment plate 784 can abut against the pressure ring 783 and drive the pressure ring 783 to approach the second gear 720.

[0040] In order to facilitate the resetting of the sliding sleeve 781, a reset plate 785 is fixedly connected to the sliding shaft 740. The reset plate 785 is located on the side of the pressure ring 783 away from the abutment plate 784, and there is a gap between the reset plate 785 and the abutment plate 784 for the pressure ring 783 to slide, and the gap is greater than or equal to the sum of the thickness of the pressure ring 783 and the length of the key block 782.

[0041] The positioning mechanism 600 includes a positioning guard frame 620 which is detachably connected to the gear ring 770 by bolts. The positioning guard frame 620 is located on the outer side of the measuring tube 300 and abuts against the inner wall of the accommodating tube 500. A first positioning block 610 is provided on the bottom wall of the accommodating tube 500. There are multiple first positioning blocks 610. A positioning bracket 630 is fixedly connected to the base 100. The positioning bracket 630 is located above the base 100 and is provided with a placement hole and multiple first positioning grooves 631. The first positioning block 610 is inserted into the first positioning groove 631, and one end portion of the accommodating tube 500 is located in the placement hole.

[0042] The accommodating cylinder 500 includes a straight cylinder portion 510, which is cylindrical and hollow, and is formed with a first accommodating chamber. A scale is formed on the inner wall of the first accommodating chamber. The positioning guard 620 abuts against the inner wall of the first accommodating chamber, and a scraper 640 is formed at the abutting position; a clamping groove 511 is provided on the outer wall of the straight cylinder portion 510, and the clamping groove 511 is annular; a clamping block 530 is clamped in the clamping groove 511, and the clamping block 530 is fixedly connected with the conical cylinder portion 520, and the conical cylinder portion 520 is fixedly connected to the first positioning block 610. The conical cylinder portion 520 can be conical or cylindrical. The present embodiment is preferably cylindrical, and a second accommodating chamber coaxial with the first accommodating chamber is formed inside. The second accommodating chamber is conical, and the cross-sectional area of ​​the end away from the straight cylinder portion 510 gradually decreases, and the second accommodating chamber is connected to the first accommodating chamber.

[0043] In order to facilitate the cleaning of the straight tube part 510 by the scraper 640, a vibration block 240 is fixedly connected to the outer wall of the straight tube part 510. The vibration block 240 abuts against the side wall of the positioning guard frame 620 and rubs the positioning guard frame 620 to make the positioning guard frame 620 vibrate.

[0044] In order to facilitate the multi-faceted detection of the same water-based pressure-sensitive adhesive, the conical cylinder portion 520 is arranged on the flow velocity mechanism 800, and the flow velocity mechanism 800 includes a discharge pipe 810 fixedly connected to the conical cylinder portion 520, the discharge pipe 810 is connected to the second accommodating chamber, and the discharge pipe 810 is vertically arranged; the end of the discharge pipe 810 is sleeved with a rubber sleeve 830, and the rubber sleeve 830 temporarily blocks the discharge pipe 810; an installation groove is opened on the base 100, and a pressure sensor is placed in the installation groove, and a containing cylinder 820 is placed above the pressure sensor, and the containing cylinder 820 is coaxially arranged with the discharge pipe 810; a timer and a processor are installed on one side of the base 100, and the pressure sensor and the timer are both connected to the processor electrical signal. When the pressure sensor has a pressure change, the timer can be controlled to start. When the pressure difference meets the requirements, the processor records the time of the timer and calculates the viscosity.

[0045] The implementation principle of the viscosity detection device of a water-based pressure-sensitive adhesive in the embodiment of the present application is as follows: when detecting the viscosity of the water-based pressure-sensitive adhesive, firstly, the conical cylinder portion 520 and the straight cylinder portion 510 are abutted against each other, so that the clamping block 530 is clamped with the clamping groove 511, and then the water-based pressure-sensitive adhesive is poured into the first accommodating cavity and the second accommodating cavity to reach the specified scale, and then it is placed in a constant temperature bath, the temperature is maintained at 20 degrees Celsius, and constant temperature preheating is performed for 10 minutes to 20 minutes, and then it is taken out, and the first positioning block 610 is clamped with the first positioning groove 631; Then, the sliding motor 231 is started, and the sliding motor 231 drives the adjusting screw 232 to rotate, and the adjusting screw 232 drives the sliding block 233 to slide, and the sliding block 233 drives the bracket 210 to move downward, and the bracket 210 drives the measuring tube 300 to enter the straight tube part 510; at this time, the positioning guard frame 620 extends into the straight tube part 510, and makes the scraper 640 abut against the inner wall of the first accommodating cavity; at the same time, the vibration block 240 abuts against the side wall of the positioning guard frame 620, and the abutting point is flexible, so that the positioning guard frame 620 vibrates when rotating.

[0046] Then, according to the needs, the position of the sliding shaft 740 is adjusted so that the first gear 710 is meshed with the second gear 720 through the fourth gear 750, or the first gear 710 is meshed with the third gear 730 through the fourth gear 750, or the sliding shaft 740 drives the abutment plate 784 and the pressure ring 783 to slide, so that the sliding sleeve 781 slides and drives the key block 782 to engage with the key slot 731, so that the third gear 730 and the second gear 720 rotate coaxially; when the first gear 710 and the third gear 730 are transmitting, it can be performed before detection to reduce excessive adhesion between the water-based pressure-sensitive adhesive and the inner wall of the accommodating tube 500.

[0047] When testing, the position of the sliding shaft 740 is adjusted so that the first gear 710 is meshed with the second gear 720 through the fourth gear 750, and then the torque of the torque sensor is detected within a specified time to record the viscosity.

[0048] After the test is completed, the rubber sleeve 830 can be removed, and the water-based pressure-sensitive adhesive enters the containing tube 820 through the discharge pipe 810. The pressure sensor is triggered by the pressure change, and the timer starts timing. When the pressure reaches the set pressure (gravity or weight), the timer stops timing and calculates the viscosity based on the change and the diameter of the discharge pipe 810. The viscosity is then averaged or recorded together with the viscosity calculated by torque.

[0049] When cleaning the straight tube portion 510 , the water-based pressure-sensitive adhesive on the inner wall can be quickly removed by rotating the positioning guard 620 and the measuring tube 300 , which is convenient for subsequent cleaning.

[0050] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A viscosity detection device for a water-based pressure-sensitive adhesive, characterized in that: include: The base (100) is formed with an operating table and is provided with a first positioning groove (631); A bracket (210) is arranged on the base (100); A measuring cylinder (300) is rotatably mounted on the bracket (210); A rotating mechanism (400) is disposed on the bracket (210) and connected to the measuring cylinder (300); A measuring mechanism, disposed on the support (210), connected to the measuring cylinder (300), and used to measure the viscosity of the water-based pressure-sensitive adhesive; A containing cylinder (500), placed on the base (100), used for containing the water-based pressure-sensitive adhesive, corresponding to the measuring cylinder (300), and provided with scale lines; The positioning mechanism (600) comprises a first positioning block (610) arranged on the accommodating cylinder (500), wherein the first positioning block (610) cooperates with the first positioning groove (631).

2. The viscosity detection device of the water-based pressure-sensitive adhesive according to claim 1, characterized in that: The positioning mechanism (600) further comprises: The positioning guard frame (620) is arranged on the bracket (210), is located outside the measuring cylinder (300), and abuts against the inner wall of the accommodating cylinder (500).

3. The viscosity detection device of the water-based pressure-sensitive adhesive according to claim 2, characterized in that: A fixing frame (220) is provided on the base (100), the bracket (210) slides on the fixing frame (220) in a vertical direction, a sliding assembly (230) is provided on the fixing frame (220), and the sliding assembly (230) is connected to the bracket (210) and is used to drive the bracket (210) to slide.

4. The viscosity detection device of the water-based pressure-sensitive adhesive according to claim 2, characterized in that: A scraper (640) is formed on the side wall of the positioning guard frame (620) abutting against the accommodating cylinder (500), and the positioning guard frame (620) is rotatably connected to the bracket (210); a switching mechanism (700) is provided on the bracket (210), and the switching mechanism (700) is connected to the measuring cylinder (300) or the positioning guard frame (620).

5. The viscosity detection device of the water-based pressure-sensitive adhesive according to claim 4, characterized in that: The switching mechanism (700) comprises: A first gear (710) connected to the rotating mechanism (400); A second gear (720) is rotated on the bracket (210) and is connected to the measuring cylinder (300); a third gear (730) rotatably disposed on the bracket (210) and coaxial with the second gear (720); A sliding shaft (740) is slidably and rotatably disposed on the bracket (210) and slides along the axial direction of the measuring cylinder (300); a fourth gear (750) which slides and rotates on the bracket (210) via the sliding shaft (740), and is always meshed with the first gear (710), and is meshed with the second gear (720) or the third gear (730); a fifth gear (760) rotatably disposed on the bracket (210) and meshing with the third gear (730); The gear ring (770) rotates on the bracket (210), meshes with the fifth gear (760), and is connected to the positioning guard frame (620).

6. The viscosity detection device of the water-based pressure-sensitive adhesive according to claim 5, characterized in that: The third gear (730) is provided with a coupling assembly (780), and the coupling assembly (780) comprises: A sliding sleeve (781) is slidably and rotatably disposed at the axis of the third gear (730), is slidably connected to the second gear (720), and is slidably and rotatably connected to the bracket (210); A key block (782) is disposed on the sliding sleeve (781) and can be key-connected with the third gear (730) as the sliding sleeve (781) slides; A pressure ring (783) is arranged on the sliding sleeve (781); The abutment plate (784) is arranged on the sliding shaft (740) and is capable of abutting against the pressure ring (783). With the compression of the sliding shaft (740), the pressure ring (783) and the sliding sleeve (781) are driven to slide.

7. The viscosity detection device of the water-based pressure-sensitive adhesive according to claim 6, characterized in that: The coupling assembly (780) further includes: The reset plate (785) is arranged on the sliding shaft (740) and is located on the other side of the pressure ring (783). There is a movement gap between the reset plate (785) and the abutment plate (784). The reset plate (785) can slide along with the sliding shaft (740), abut against the pressure ring (783), and drive the pressure ring (783) to slide.

8. The viscosity detection device of the water-based pressure-sensitive adhesive according to claim 1, characterized in that: The accommodating cylinder (500) comprises: The straight tube portion (510) is in the shape of a hollow cylinder and is provided with a first accommodating cavity, a scale is formed on the inner wall of the first accommodating cavity, and a clamping groove (511) is formed on the outer wall; A conical cylinder portion (520) connected to the first positioning block (610) to form a second accommodating cavity having a conical shape and communicating with the first accommodating cavity; The clamping block (530) is arranged on the conical cylinder portion (520) and is clamped with the clamping groove (511).

9. The viscosity detection device of the water-based pressure-sensitive adhesive according to any one of claims 1 to 8, characterized in that: A flow rate mechanism (800) is provided at one end of the accommodating cylinder (500) away from the measuring cylinder (300), and the flow rate mechanism (800) comprises: A discharge pipe (810) is arranged at one end of the accommodating cylinder (500) away from the measuring cylinder (300); A containing cylinder (820) is arranged on the base (100), is used to receive the water-based pressure-sensitive adhesive, and is provided with a pressure sensor and a timer, the timer being connected to the pressure sensor via an electrical signal; The rubber sleeve (830) is sleeved on the discharge pipe (810) and is used to block or open the discharge pipe (810).

10. The viscosity detection device of the water-based pressure-sensitive adhesive according to any one of claims 2 to 7, characterized in that: A vibration block (240) is provided on the accommodating cylinder (500), and the vibration block (240) abuts against a side wall of the positioning guard frame (620) and rubs against the positioning guard frame (620), causing the positioning guard frame (620) to vibrate.

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