Acrylic acid pressure-sensitive adhesive color paste preparation equipment and process

Abstract

The invention relates to the technical field of color paste mixing equipment, in particular to acrylic acid pressure-sensitive adhesive color paste preparation equipment and process, the acrylic acid pressure-sensitive adhesive color paste preparation equipment comprises a stirring barrel, and a stirring mechanism and a premixing unit are arranged in the stirring barrel; the stirring mechanism comprises a plurality of stirring blades which are coaxially arranged in the stirring barrel and can rotate; the premixing unit comprises a driving mechanism, a circulating mechanism and a separating mechanism driven by the driving mechanism; a plurality of filter holes communicated with the premixing cavity and the interior of the stirring barrel are formed in the barrel wall of the first rotating barrel; a first grinding part composed of a plurality of grinding particles is arranged on the upper end face of the first rotating cylinder. According to the device, material refining, stubborn aggregate crushing and material uniform distribution can be achieved through centrifugal separation and reverse transmission grinding of the inverted-circular-truncated-cone-shaped first rotating cylinder, periodic up-and-down movement of the first rotating disc achieved through cooperation of an inclined block and a spring, and intermittent contact of a spoiler and a trigger rod to adjust the refraction angle; and the preparation effect of the acrylic pressure-sensitive adhesive color paste is optimized.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of color paste mixing equipment, in particular to acrylic pressure-sensitive adhesive color paste preparation equipment. BACKGROUND

[0002] As the core coloring component of high-end products such as electronic-grade adhesive tape, food packaging labels and automobile protection films, the performance of acrylic pressure-sensitive adhesive color paste directly determines the appearance precision and use reliability of the terminal products. In the electronic industry, the fineness of FPC adhesive tape color paste should be less than or equal to 5 microns, otherwise the "light transmission point" will appear after the adhesive tape is coated, affecting the insulation performance of the circuit board. High-grade food packaging labels require color paste color uniformity error to be less than or equal to 2%, so as to avoid consumer questioning the quality of the product due to color difference. The color paste for automobile protection film also needs to meet the stability requirement of no delamination for more than 3 months in storage, so as to prevent the "sagging" phenomenon in the process of pasting the film. Therefore, the market puts forward higher standards for the fineness, color uniformity and storage stability of acrylic pressure-sensitive adhesive color paste.

[0003] Through retrieval, Chinese Patent Publication No. CN118904170B discloses a color paste mixing device and mixing process, which comprises a mixing cylinder, a ring sleeve, a main core, a fixed ring and a sliding ring. The ring sleeve is sleeved into the main core. The main core comprises a convex body one at the top and a convex body two below the convex body one. The lower end of the ring sleeve is provided with a ring sleeve hole two. The inner wall of the ring sleeve hole two and the outer wall of the convex body two form a gap. The upper end of the ring sleeve is provided with a ring sleeve hole one. The ring sleeve hole one and the ring sleeve hole two are in communication. The convex body one is provided with a flow guide component. The fixed ring is provided with a through hole three. The through hole three is in communication with the top of the ring sleeve hole one. The convex body one is provided with a rotating sleeve. The rotating sleeve can rotate along its own axis. The sliding ring is inserted into the fixed ring and can move up and down along the inner wall of the fixed ring. The inner wall of the sliding ring is provided with a support rod. The support rod is arranged axially along the radial direction of the sliding ring. The bottom position of the rotating sleeve can be lower than the top position of the support rod.

[0004] For the related technology in the above, the inventors find that the following defects exist: In the preparation of acrylic pressure-sensitive adhesive color paste, inorganic fillers such as titanium dioxide and calcium carbonate need to be fully mixed and dispersed with acrylic ester emulsion. Most of the mixing devices in the prior art adopt one-time feeding mode. The inorganic fillers such as titanium dioxide and calcium carbonate are directly put into the acrylic ester emulsion, so that the local area filler concentration is too large at once, and agglomerates are easily formed. These agglomerates will make the material flow uneven, prolong the mixing time, increase the energy consumption, and reduce the mixing efficiency. At the same time, the agglomerates remaining in the finished product will make the color paste contain coarse particles, causing problems such as coating color difference and pinhole, affecting the product quality. SUMMARY

[0005] In order to improve the mixing efficiency and the quality of the color paste, the application provides an acrylic pressure-sensitive adhesive color paste preparation equipment.

[0006] The application provides an acrylic pressure-sensitive adhesive color paste preparation device. An acrylic pressure-sensitive adhesive color paste preparation device, comprising a stirring barrel, characterized in that: a stirring mechanism and a premixing unit are arranged in the stirring barrel; the stirring mechanism comprises a plurality of stirring blades arranged coaxially in the stirring barrel and capable of rotating; the premixing unit comprises a driving mechanism, a circulating mechanism and a separation mechanism driven by the driving mechanism; the circulating mechanism can transport the material at the bottom of the stirring barrel into the separation mechanism; the separation mechanism comprises a first rotating cylinder arranged coaxially with the stirring barrel and a first rotating disc arranged coaxially with the first rotating cylinder and having an opposite rotating direction; the first rotating cylinder is an inverted circular truncated cone body with an open top end, a premixing cavity is arranged in the circular truncated cone body, and a premixing space is formed between the premixing cavity and the lower end surface of the first rotating disc; a plurality of filter holes are formed in the cylinder wall of the first rotating cylinder and communicate the premixing cavity and the interior of the stirring barrel; a first grinding part composed of a plurality of grinding particles is arranged on the upper end surface of the first rotating cylinder; a second grinding part composed of a plurality of grinding particles is arranged on the side wall of the first rotating disc, the first grinding part and the second grinding part form a grinding space, and the grinding space gradually decreases outward along the radial direction of the first rotating cylinder; the first rotating disc can periodically move up and down along the axial direction of the first rotating cylinder while rotating. The plurality of coaxial rotating stirring blades of the stirring mechanism can overall stir the material, the premixing unit can pretreat the material at the bottom of the stirring barrel and the material to be mixed, avoid local accumulation of the material, shorten the mixing time, improve the mixing efficiency, and reduce the waste of raw materials caused by uneven mixing. The first rotating cylinder and the first rotating disc in the separation mechanism rotate in opposite directions, cooperate with the radially outwardly decreasing grinding space, can accurately grind the blocky material and agglomerates that do not pass through the filter holes, and the periodic up-and-down movement of the first rotating disc further enhances the grinding effect, ensures that the fineness of the material meets the standard, and avoids coating defects of the finished color paste caused by containing coarse particles.

[0007] Further, a first feeding port is formed in the upper end surface of the first rotating disc, and an annular second rotating disc is fixedly arranged coaxially on the upper end surface of the first rotating disc; a coaxial and annular temporary storage cavity is formed in the upper end surface of the second rotating disc and communicates with the first feeding port through a pipeline.

[0008] Further, the lower part of the stirring barrel is funnel-shaped, the bottom wall of the stirring barrel is communicated with a suction pump through a pipeline, and the upper part of the stirring barrel is fixedly provided with an inorganic filler conveying pipe; the circulating mechanism comprises a three-way reversing valve communicated with the other end of the suction pump through a pipeline, and a third fixed disc coaxially arranged with the second rotating disc and in the shape of a ring; the size of the third fixed disc is matched with the size of the temporary storage cavity, and the third fixed disc is both rotationally connected and up-down slidingly connected with the second rotating disc; one end of the three-way reversing valve is provided with a discharge pipe, and the other end is provided with a circulating pipe; the third fixed disc is provided with a second feeding port and a third feeding port, the second feeding port is communicated with the circulating pipe, and the third feeding port is communicated with the inorganic filler conveying pipe; and the third fixed disc is fixedly connected with the stirring barrel. The lower part of the stirring barrel is funnel-shaped, which can guide the material to naturally gather at the bottom, cooperate with the suction pump to quickly extract the material at the bottom, avoid the accumulation of residual material, improve the material conveying efficiency, and provide a stable material source for circulating treatment or discharge. The three-way reversing valve can be respectively communicated with the circulating pipe and the discharge pipe, switched to the circulating pipe during preparation, the material at the bottom can be sent back to the premixing unit for repeated treatment to ensure uniform mixing, and switched to the discharge pipe when the product is finished, the finished product is directly discharged without additional disassembly of the equipment, the operation is flexible and the process is not interrupted.

[0009] Further, the driving mechanism comprises a placing rack and a bearing rack fixedly arranged on the stirring barrel, a first motor fixedly arranged on the placing rack, and a first bevel gear fixedly arranged on the output shaft of the first motor.

[0010] Further, a third bevel gear meshed with the first bevel gear is rotationally arranged on the placing rack; a first through hole is formed in the upper end surface of the third bevel gear, and a first sliding groove is formed in the side wall of the first through hole; a second transmission cylinder is coaxially fixedly arranged on the second rotating disc, and a first sliding block matched with the first sliding groove is arranged on the side wall of the second transmission cylinder; and a plurality of stirring rods are arranged on the side wall of the second transmission cylinder in the premixing space.

[0011] Further, a plurality of first inclined blocks are arranged on the side wall of the first transmission rod, and a plurality of second inclined blocks matched with the first inclined blocks are arranged on the side wall of the second transmission cylinder.

[0012] Further, a first rotating ring is coaxially rotationally connected to the lower end surface of the placing rack, a plurality of first sliding cylinders are fixedly arranged on the lower end surface of the first rotating ring, a fourth fixed disc is coaxially fixedly arranged on the second transmission cylinder, a plurality of first sliding rods matched with the first sliding cylinders are arranged on the upper end surface of the fourth fixed disc, and a first compression spring is arranged between the upper end surface of the first sliding rod and the top wall of the first sliding cylinder.

[0013] Further, the bottom of the stirring barrel is coaxially and fixedly provided with a second motor, and the second motor is sealingly and drivingly connected with the plurality of stirring blades in the stirring barrel.

[0014] Further, the second rotating disc is fixedly provided with a plurality of rotating frames, each rotating frame is rotationally connected with a driving rod, each driving rod is provided with a spoiler, and the spoiler is provided with an arc-shaped portion on the side wall perpendicular to the rotating frame; each driving rod is sleeved with a torsion spring, one end of the torsion spring is fixedly connected with the driving rod, and the other end of the torsion spring is fixedly connected with the rotating frame; the upper end surface of each trigger rod is in a spherical shape. When the spoiler rotates with the second rotating disc, the refractive angle of the material thrown out after grinding can be adjusted; when the arc-shaped portion of the spoiler contacts the spherical trigger rod, the refractive angle is increased, the material falls to the far-axis region of the stirring barrel, the torsion spring resets to reduce the refractive angle when the material falls to the near-axis region, and finally the material is uniformly distributed in the stirring barrel, avoiding local accumulation and improving the overall mixing uniformity.

[0015] A preparation process of acrylic pressure-sensitive adhesive color paste, comprising the following steps: S1, start the first motor to drive the first rotating cylinder and the first rotating disc to rotate in opposite directions, and start the second motor to drive the stirring blades to rotate; S2, the new inorganic filler enters the temporary storage cavity through the inorganic filler conveying pipe and the third feeding port, and the material at the bottom of the stirring barrel enters the temporary storage cavity through the suction pump, the circulating pipe and the second feeding port, and then the two types of materials enter the premixing space through the first feeding port; S3, the stirring rod in the premixing space preliminarily disperses the material, the centrifugal action of the first rotating cylinder makes the qualified material enter the stirring barrel through the filter hole, and the unqualified material enters the grinding space; S4, the first grinding part and the second grinding part rotate in opposite directions to grind the material, the spoiler dynamically adjusts the refractive angle of the material, and the first inclined block and the second inclined block cooperate to make the second transmission cylinder reciprocate to enhance the grinding; S5, keep the circulation mode, and repeat steps 2-4 until the material mixing reaches the standard; S6, switch the three-way reversing valve to the discharge mode, and discharge the finished color paste.

[0016] In summary, the present application has the following beneficial technical effects: 1. The application sets the first rotating cylinder of inverted circular truncated cone, rotates at high speed under the drive mechanism, generates centrifugal force to make the material in the premixing space adhere to the inner wall of the premixing cavity. The material meeting the particle size requirement enters the stirring barrel main body through the filter hole of the cylinder wall, and the blocky material and agglomerates that do not pass through the filter hole move upward along the inner wall of the first rotating disc under the action of centrifugal force and enter the wedge-shaped grinding space composed of the first grinding part and the second grinding part. The wedge-shaped grinding space can adapt to inorganic filler agglomerates of different hardness and particle size. At the same time, the first rotating cylinder and the first rotating disc rotate in opposite directions under the action of bevel gear transmission, and the grinding part crushes and grinds the agglomerates to ensure that the fineness of the material meets the standard.

[0017] 2. The first inclined block of the side wall of the first transmission rod intermittently abuts against the second inclined block of the side wall of the second transmission cylinder, pushes the second transmission cylinder to move downward along the axial direction, and compresses the first compression spring; when the inclined blocks are separated, the spring returns to drive the second transmission cylinder to move upward, so that the first rotating disc moves up and down periodically, the distance between the grinding parts dynamically changes, and intermittent pressing force is generated on the material to further crush stubborn agglomerates.

[0018] 3. When the spoiler plate on the second rotating disc rotates with the equipment, the arc-shaped part thereof intermittently contacts the spherical trigger rod on the upper end of the first rotating cylinder, the spoiler plate rotates upward when contacting, the refraction angle of the material is increased, the ground material falls to the area far from the shaft center of the stirring barrel, the spring returns when the spoiler plate is separated, the refraction angle is reduced, and the material falls to the area close to the shaft center, so that the material is more evenly distributed in the stirring barrel. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 is the overall structure schematic diagram in the embodiment of the application; Figure 2 is the internal structure schematic diagram in the embodiment of the application; Figure 3 is the structure schematic diagram of main components in the embodiment of the application; Figure 4 is the cross-sectional structure schematic diagram of main components in the embodiment of the application; Figure 5 is Figure 4 is the enlarged schematic diagram of A part in Figure 6 is the structure schematic diagram of the first rotating cylinder in the embodiment of the application; Figure 7 is the structure schematic diagram of the first rotating disc in the embodiment of the application; Figure 8 is the structure schematic diagram of the third fixed disc in the embodiment of the application; Figure 9 is the structure schematic diagram of the second rotating disc in the embodiment of the application; Figure 10This is a schematic diagram of the structure of the second transmission cylinder in an embodiment of this application; Figure 11 This is a schematic diagram of the structure of the third bevel gear in the embodiments of this application.

[0020] Reference numerals: 1. Mixing tank; 10. Separation mechanism; 101. First rotating cylinder; 1011. Premixing chamber; 1012. Premixing space; 1013. Filter hole; 1014. First grinding section; 102. First rotating disk; 1021. Second grinding section; 1022. First feed inlet; 103. Grinding space; 104. Second rotating disk; 1041. Temporary storage chamber; 105. Rotating frame; 106. Drive rod; 107. Baffle plate; 1071. Arc-shaped part; 108. Torsion spring; 109. Trigger rod; 110. Second transmission cylinder; 1101. Stirring rod; 1102. First sliding block; 1103. Second inclined block; 2. Stirring mechanism; 21. Stirring blade; 22. Stirring 1. Mixing shaft; 23. Second motor; 3. Premixing unit; 4. Suction pump; 5. Inorganic filler conveying pipe; 6. Placement rack; 7. Bearing rack; 8. Drive mechanism; 81. First motor; 82. First bevel gear; 83. First transmission rod; 831. First inclined block; 84. Second bevel gear; 85. Third bevel gear; 851. First through hole; 852. First sliding groove; 86. First rotating ring; 87. First sliding cylinder; 88. Fourth fixed plate; 89. First sliding rod; 810. First compression spring; 9. Circulation mechanism; 91. Three-way reversing valve; 911. Discharge pipe; 912. Circulation pipe; 92. Third fixed plate; 921. Second feed inlet; 922. Third feed inlet. Detailed Implementation

[0021] The following is in conjunction with the appendix Figures 1-11 This application will be further described in detail below. The technical solutions in the embodiments of this application will be clearly described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application are within the scope of protection of this application.

[0022] This application discloses an apparatus for preparing acrylic pressure-sensitive adhesive color paste. For example... Figure 1 As shown, it includes a mixing tank 1, the lower part of which has a funnel-shaped structure to facilitate the material to gather at the bottom; the mixing tank 1 is equipped with a stirring mechanism 2 and a premixing unit 3, wherein the stirring mechanism 2 is used to perform final uniform mixing of the premixed material, and the premixing unit 3 is used to achieve the initial dispersion of inorganic fillers and acrylic emulsion and the grinding of agglomerates.

[0023] The bottom wall of the stirring barrel 1 is communicated with a suction pump 4 through a pipeline, and the suction pump 4 is used to extract the material at the bottom of the stirring barrel 1; the upper part of the stirring barrel 1 is fixedly provided with an inorganic filler conveying pipe 5, and the inorganic filler conveying pipe 5 is used to quantitatively convey titanium dioxide, calcium carbonate and other inorganic fillers into the device; various inorganic fillers can be preliminarily mixed in an external container and then conveyed into the inorganic filler conveying pipe 5 through a conveying device; the conveying device can adopt an existing conveying pump capable of conveying powder and the like; the top of the stirring barrel 1 is fixedly provided with a placing rack 6 and a bearing rack 7, and the placing rack 6 and the bearing rack 7 provide mounting supports for a driving mechanism 8.

[0024] Please refer to Figure 2 In the present application, the stirring mechanism 2 comprises a plurality of stirring blades 21 coaxially arranged in the stirring barrel 1, the plurality of stirring blades 21 are vertically spaced and fixedly connected to the stirring shaft 22; the stirring shaft 22 is rotatably connected to the stirring barrel 1; the lower end surface of the stirring barrel 1 is fixedly provided with a second motor 23; the output shaft of the second motor 23 is coaxially fixedly connected to the stirring shaft 22 through a sealing transmission member; the stirring shaft 22 is driven to rotate by the second motor 23, thereby driving the stirring blades 21 to stir and mix the material in the stirring barrel 1; the sealing transmission member is an existing technology known to those skilled in the art, and its structure and principle will not be described here.

[0025] Please refer to Figure 3 , Figure 4 , Figure 5 and Figure 6 In the present application, the premixing unit 3 comprises a driving mechanism 8, a circulating mechanism 9 and a separating mechanism 10, which cooperatively realize the premixing, grinding and circulating treatment of the material; the separating mechanism 10 comprises a first rotating cylinder 101 and a first rotating disc 102, both of which are coaxially arranged with the stirring barrel 1 and can rotate in opposite directions; the first rotating cylinder 101 is an inverted circular truncated cone body with an open upper end surface, and a premixing cavity 1011 is formed in the interior thereof; a premixing space 1012 is formed between the premixing cavity 1011 and the lower end surface of the first rotating disc 102; a plurality of filter holes 1013 are formed in the cylinder wall of the first rotating cylinder 101, and the filter holes 1013 communicate the premixing cavity 1011 and the interior of the stirring barrel 1; the premixed material can enter the main body of the stirring barrel 1 through the filter holes 1013; A first grinding part 1014 is arranged on the upper end surface of the first rotating cylinder 101, and the first grinding part 1014 is composed of a plurality of uniformly distributed grinding particles; a second grinding part 1021 is correspondingly arranged on the side wall of the first rotating disc 102, and the second grinding part 1021 is also composed of a plurality of grinding particles; a grinding space 103 is formed between the first grinding part 1014 and the second grinding part 1021, and the grinding space 103 gradually narrows outward along the radial direction of the first rotating cylinder 101, forming a wedge-shaped grinding channel; In the embodiment, when the material enters the premixing space 1012, the material is preliminarily premixed, the first rotating cylinder 101 rotates, the material adheres to the inner wall of the premixing cavity 1011 under the action of centrifugal force, the material capable of passing through the filter hole 1013 enters the main body of the stirring barrel 1, and the material incapable of passing through the filter hole 1013 moves upward along the inner wall of the first rotating disc 102 under the action of centrifugal force and finally enters the grinding space 103; since the first rotating cylinder 101 and the first rotating disc 102 rotate in opposite directions, the first grinding part 1014 and the second grinding part 1021 crush and grind the blocky substances and agglomerates in the material entering the grinding space 103 into smaller particle sizes, and then the material is thrown into the main body of the stirring barrel 1 under the action of centrifugal force of the first rotating cylinder 101; since the grinding space 103 gradually narrows outward along the radial direction of the first rotating cylinder 101, different specifications of the blocky substances and agglomerates in the material can be better ground.

[0026] Please refer to Figure 7 、 Figure 8 and Figure 9 In the embodiment, the upper end surface of the first rotating disc 102 is provided with a first feeding port 1022, and the upper end surface of the first rotating disc 102 is coaxially and fixedly provided with an annular second rotating disc 104; the upper end surface of the second rotating disc 104 is provided with a coaxial and annular temporary storage cavity 1041, the temporary storage cavity 1041 communicates with the first feeding port 1022 through a pipeline, and the material in the temporary storage cavity 1041 can be uniformly conveyed to the first feeding port 1022 through the pipeline and then enter the premixing space 1012; The second rotating disc 104 is fixedly provided with a plurality of rotating frames 105, and the plurality of rotating frames 105 are uniformly distributed along the circumferential direction of the second rotating disc 104; each rotating frame 105 is rotationally connected with a driving rod 106 through a rotating shaft, each driving rod 106 is fixedly provided with a spoiler 107, and the spoiler 107 is provided with an arc-shaped part 1071 on the side wall perpendicular to the rotating frame 105; each driving rod 106 is sleeved with a torsional spring 108, one end of the torsional spring 108 is fixedly connected with the driving rod 106, the other end is fixedly connected with the rotating frame 105, and the torsional spring 108 provides a reset elastic force for the driving rod 106; the upper end surface of each trigger rod 109 is spherical, which facilitates contact with the arc-shaped part 1071 of the spoiler 107; the elastic force of the torsional spring 108 can overcome the centrifugal force generated by the rotation of the first rotating disc 102, so as to avoid the centrifugal force generated by the first rotating disc 102 from swinging the spoiler 107; The second rotating disc 104 is coaxially and fixedly provided with a second transmission cylinder 110, and the side wall of the second transmission cylinder 110 is provided with a plurality of stirring rods 1101, the stirring rods 1101 are located in the premixing space 1012 and are used for stirring and dispersing the material in the premixing space 1012. In the embodiment, the spoiler 107 is used to refract the material thrown out of the grinding space 103; since the rotation directions of the first rotating cylinder 101 and the first rotating disc 102 are opposite, when the lower end surface of the spoiler 107 is in contact with the upper end surface of the trigger lever 109, the spoiler 107 will rotate upward with the axis of the driving lever 106 as the center, the torsional spring 108 is charged, thereby increasing the refraction angle, so that the material thrown out of the grinding space 103 falls in the stirring barrel 1 at a position farther from the axis; when the lower end surface of the spoiler 107 is not in contact with the upper end surface of the trigger lever 109, the elastic force of the torsional spring 108 is released, and drives the spoiler 107 to reset, thereby reducing the refraction angle, so that the material thrown out of the grinding space 103 falls in the stirring barrel 1 at a position closer to the axis; the upper end surface of each trigger lever 109 is spherical, and the spoiler 107 is provided with an arc-shaped portion 1071 on the side wall perpendicular to the rotating frame 105, so that the initial contact between the spoiler 107 and the trigger lever 109 is smoother, avoiding interference between the mechanisms.

[0027] Please refer to Figure 1 In the present application, the circulating mechanism 9 comprises a three-way reversing valve 91 and a third fixed disc 92; one end of the three-way reversing valve 91 is communicated with the output end of the suction pump 4 through a pipeline, and the other end is provided with a discharge pipe 911 for discharging the prepared colorant paste; the third end of the three-way reversing valve 91 is provided with a circulating pipe 912 for delivering the material back to the premixing unit 3; The third fixed disc 92 is of an annular structure and is coaxially arranged with the second rotating disc 104, and its specification is adapted to that of the temporary storage cavity 1041; the third fixed disc 92 and the second rotating disc 104 are connected in a mode of both rotating connection and up-down sliding connection, specifically: the lower end surface of the third fixed disc 92 is an annular slide block, and the upper end surface of the second rotating disc 104 is provided with an annular slide groove adapted to the annular slide block, the annular slide block is embedded in the annular slide groove, and the relative rotation and up-down sliding of the two are realized; The third fixed disc 92 is provided with a second feeding port 921 and a third feeding port 922, the second feeding port 921 is communicated with the circulating pipe 912 and is used for receiving the circulating material, and the third feeding port 922 is communicated with the inorganic filler conveying pipe 5 and is used for receiving the newly added inorganic filler; the third fixed disc 92 is fixedly connected with the inner wall of the stirring barrel 1 through a support, and the position is kept fixed; In the embodiment, when mixing, the three-way reversing valve 91 makes the suction pump 4 communicated with the circulating pipe 912, and the material at the bottom of the stirring barrel 1 enters the temporary storage cavity 1041 through the circulating pipe 912, and then enters the premixing space 1012 through the first feeding port 1022; In order to avoid the inorganic filler and the recycled material from being mixed in advance, the lower end face of the third fixed disc 92 can be provided with two baffles, so as to dynamically divide the temporary storage cavity 1041 into two chambers, the second feeding port 921 can only feed the temporary storage cavity 1041 on one side of the baffle, and the third feeding port 922 can only feed the temporary storage cavity 1041 on the other side of the baffle.

[0028] Please refer to Figure 2 In the application, the driving mechanism 8 comprises a first motor 81 fixedly arranged on the placing rack 6, and an output shaft of the first motor 81 is fixedly provided with a first bevel gear 82; an upper end of a first rotating cylinder 101 is coaxially fixedly provided with a first transmission rod 83, and an upper end face of the first transmission rod 83 is rotationally abutted with the placing rack 6 through a bearing; the first transmission rod 83 is coaxially fixedly provided with a second bevel gear 84, and the second bevel gear 84 is engaged with the first bevel gear 82; A third bevel gear 85 is rotationally arranged on the placing rack 6 through a bearing, the third bevel gear 85 is engaged with the first bevel gear 82, and the second bevel gear 84 is respectively located on the upper and lower sides of the first bevel gear 82; a first through hole 851 is formed in an upper end face of the third bevel gear 85, and a first sliding groove 852 is formed in a side wall of the first through hole 851; the second transmission cylinder 110 passes through the first through hole 851, and a first sliding block 1102 matched with the first sliding groove 852 is arranged on a side wall of the second transmission cylinder 110, the first sliding block 1102 is embedded in the first sliding groove 852, so that the third bevel gear 85 and the second transmission cylinder 110 are synchronously rotated, and the second transmission cylinder 110 is allowed to slide in the axial direction; In the embodiment, the first motor 81 is engaged with the second bevel gear 84 and the third bevel gear 85 to drive the second bevel gear 84 and the third bevel gear 85 to rotate through the first bevel gear 82, the second bevel gear 84 drives the first rotating cylinder 101 to rotate through the first transmission rod 83, and the third bevel gear 85 drives the first rotating disc 102 to rotate through the second transmission cylinder 110.

[0029] Please refer to Figure 6 And Figure 10 In the application, a plurality of first inclined blocks 831 are arranged on a side wall of the first transmission rod 83, the plurality of first inclined blocks 831 are uniformly distributed along the circumference of the first transmission rod 83, and the inclined surfaces of the first inclined blocks 831 face downward; a plurality of second inclined blocks 1103 are correspondingly arranged on a side wall of the second transmission cylinder 110, the inclined surfaces of the second inclined blocks 1103 are matched with the inclined surfaces of the first inclined blocks 831, and when the first inclined blocks 831 abut against the second inclined blocks 1103, the first inclined blocks 831 and the second inclined blocks 1103 interact to drive the second transmission cylinder 110 to move downward in the axial direction; The lower end face of the rack 6 is coaxially connected with a first rotating ring 86 through a bearing, and a plurality of first sliding cylinders 87 are fixedly arranged on the lower end face of the first rotating ring 86 and uniformly distributed in the circumferential direction. A fourth fixed disc 88 is coaxially fixed on the second transmission cylinder 110, and a plurality of first sliding rods 89 matched with the first sliding cylinders 87 are arranged on the upper end face of the fourth fixed disc 88. The first sliding rods 89 are inserted into the first sliding cylinders 87 and are in sliding fit with the first sliding cylinders 87. A first compression spring 810 is arranged between the upper end face of the first sliding rod 89 and the top wall of the first sliding cylinder 87, and the first compression spring 810 is always in a compressed state to provide an upward elastic force for the fourth fixed disc 88; In the embodiment, when the first inclined block 831 abuts against the second inclined block 1103, the first inclined block 831 and the second inclined block 1103 interact to push the second transmission cylinder 110 to move downward in the axial direction, the first compression spring 810 is stretched, and the second grinding part 1021 moves downward and approaches the first grinding part 1014, so that the materials and agglomerates in the grinding space 103 can be intermittently pressed in the upward and downward directions while being ground, and the grinding efficiency is further improved; When the first inclined block 831 does not abut against the second inclined block 1103, the elastic force of the first compression spring 810 drives the second transmission cylinder 110 to drive the first rotating disc 102 to move upward, so that the trigger rod 109 drives the swing amplitude of the spoiler 107 to be larger, and the materials refracted by the spoiler 107 can fall into a larger area of the stirring barrel 1, and the mixing efficiency is further improved.

[0030] A preparation process of an acrylic pressure-sensitive adhesive color paste comprises the following flow: S1, start the first motor to drive the first rotating cylinder and the first rotating disc to rotate reversely through the bevel gear transmission to provide power for premixing and grinding; start the second motor to drive the stirring shaft and the vertically distributed stirring blades to rotate to prepare for the final mixing of the materials in the stirring barrel; S2, the newly added inorganic filler is externally preliminarily mixed, then pumped to the inorganic filler conveying pipe by the conveying pump, and enters the side chamber of the temporary storage cavity through the third feeding port of the third fixed disc; the suction pump extracts the materials at the bottom of the stirring barrel, and switches to the circulation mode through the three-way reversing valve, and then is sent into the other side chamber of the temporary storage cavity through the second feeding port by the circulation pipe; the two types of materials in the temporary storage cavity are uniformly conveyed to the first feeding port through the pipeline, and finally enter the premixing space, and the baffle is designed to avoid the two types of materials from being mixed in advance; S3, the stirring rod in the premixing space preliminarily stirs and disperses the materials to break the initial agglomeration state; the first rotating cylinder rotates to generate a centrifugal force, so that the materials adhere to the inner wall of the premixing cavity, and the materials meeting the particle size requirement enter the main body of the stirring barrel through the filter hole; the blocky materials and agglomerates that do not pass through the filter hole move upward along the inner wall of the first rotating disc under the action of the centrifugal force and enter the grinding space; S4, the first rotating cylinder and the first rotating disc rotate reversely, and the material is crushed and ground to a smaller particle size by the grinding part in the wedge-shaped grinding channel; the material after grinding is thrown out under the action of centrifugal force, the spoiler is in contact with and separated from the trigger rod, and the refraction angle is dynamically adjusted to make the material uniformly distributed in different areas of the stirring barrel; the intermittent abutment of the first inclined block and the second inclined block drives the second transmission cylinder to move axially and reciprocally, so that the grinding part spacing changes to generate intermittent pressing force, and the grinding effect is improved; S5, the three-way reversing valve keeps the circulation mode, the suction pump continuously extracts the material at the bottom of the stirring barrel, and the material is sent back to the premixing unit to repeat the premixing-grinding-dispersion process; multiple cycles solve the problem of uneven dispersion of the material, avoid local agglomeration of components with large density difference, and ensure uniform overall mixing; S6, when the material mixing degree reaches the standard, the three-way reversing valve switches to the discharge mode, and the prepared acrylic pressure-sensitive adhesive color paste is discharged through the discharge pipe.

[0031] Workflow: Start the first motor 81, the output shaft of which drives the first bevel gear 82 to rotate, the first bevel gear 82 simultaneously engages the second bevel gear 84 and the third bevel gear 85, and the two are located on the upper and lower sides of the first bevel gear 82 respectively, realizing reverse rotation; the second bevel gear 84 drives the first rotating cylinder 101 to rotate through the first transmission rod 83; the third bevel gear 85 drives the second rotating cylinder 110 to rotate through the cooperation of the first sliding groove 852 and the first sliding block 1102, and then drives the first rotating disc 102 to rotate; start the second motor 23, the output shaft of which drives the stirring shaft 22 to rotate through the sealing transmission part, and the multiple stirring blades 21 distributed vertically and spaced on the shaft mix the material in the stirring barrel 1; The newly added inorganic filler (such as titanium dioxide, calcium carbonate) is preliminarily mixed externally, then delivered to the inorganic filler delivery pipe 5 by the delivery pump, and then enters the temporary storage cavity 1041 of the second rotating disc 104 through the third feeding port 922 of the third fixed disc 92; the material at the bottom of the stirring barrel 1 is extracted by the suction pump 4, then switched to the circulation mode by the three-way reversing valve 91, delivered to the second feeding port 921 of the third fixed disc 92 by the circulation pipe 912, and also enters the temporary storage cavity 1041; the material in the temporary storage cavity 1041 is uniformly delivered to the first feeding port 1022 of the first rotating disc 102 through the pipeline, and finally enters the premixing space 1012; The lower end surface of the third fixed disc 92 is provided with two baffles, which dynamically separates the temporary storage cavity 1041 into two independent chambers, and the second feeding port 921 only supplies circulating materials to one side, and the third feeding port 922 only supplies new inorganic fillers to the other side, so as to avoid the mixing of the two types of materials in advance before premixing, and to ensure the subsequent dispersion effect; the third fixed disc 92 has a ring structure, and the lower end surface ring-shaped sliding block is embedded in the upper end surface ring-shaped sliding groove of the second rotating disc 104, so as to realize the cooperation of rotation and up-down sliding of the two, which not only ensures the position of the third fixed disc 92 (connected with the inner wall of the stirring barrel 1 through a support), but also does not affect the rotation of the second rotating disc 104, and ensures the stable conveying of the materials; After the materials enter the premixing space 1012, the stirring rod 1101 on the second transmission cylinder 110 located in the premixing space 1012 preliminarily stirs and disperses the materials; at the same time, the first rotating cylinder 101 rotates to generate centrifugal force, so that the materials adhere to the inner wall of the premixing cavity 1011; the materials meeting the particle size requirement pass through the filter hole 1013 of the first rotating cylinder 101 to enter the main body of the stirring barrel 1; the blocky materials and agglomerates that do not pass through the filter hole 1013 move upward along the inner wall of the first rotating disc 102 under the action of centrifugal force, and enter the grinding space 103; the first rotating cylinder 101 and the first rotating disc 102 rotate in opposite directions, the first grinding part 1014 at the upper end of the first rotating cylinder 101 and the second grinding part 1021 of the side wall of the first rotating disc 102 grind the materials, and the ground materials are thrown into the main body of the stirring barrel 1 under the action of centrifugal force; the grinding space 103 gradually narrows outward along the radial direction of the first rotating cylinder 101, forming a wedge-shaped grinding channel, which can adapt to different specifications of blocky materials and agglomerates, and ensure that all types of materials can be fully ground to smaller particle sizes; When the materials are thrown out after grinding, the spoiler 107 refracts them; when the lower end surface of the spoiler 107 contacts the trigger rod 109 at the upper end of the first rotating cylinder 101, the spoiler 107 rotates upward with the center of the driving rod 106, the torsional spring 108 stores energy, the refraction angle increases, and the materials fall to the position far from the shaft center in the stirring barrel 1; when there is no contact, the torsional spring 108 resets, the refraction angle decreases, and the materials fall to the position close to the shaft center, so as to realize the uniform distribution of the materials in the stirring barrel 1; the upper end of the trigger rod 109 is in the form of a ball, and the side wall of the spoiler 107 is provided with an arc-shaped part 1071, so that when the two contact, the mechanism is not interfered, and the spoiler 107 swings smoothly; When the first transmission rod 83 rotates, the first inclined block 831 of the side wall thereof abuts against the second inclined block 1103 of the side wall of the second transmission cylinder 110, and pushes the second transmission cylinder 110 to move downward along the axial direction; when the two do not abut against each other, the first compression spring 810 releases the elastic force, drives the second transmission cylinder 110 to reset upward, and realizes the axial reciprocating movement of the second transmission cylinder 110; when the second transmission cylinder 110 moves upward and downward along the axial direction, the first rotating disc 102 is synchronously moved, the interval between the second grinding part 1021 and the first grinding part 1014 is intermittently changed, the intermittent pressing force is generated on the material in the grinding space 103, and the stubborn agglomerates are further crushed; at the same time, the upward and downward movement of the first rotating disc 102 can increase the disturbance of the material in the premixing space 1012, cooperate with the stirring rod 1101 to improve the premixing efficiency, and can increase the swing amplitude of the spoiler 107, and expand the material dispersion range; The three-way reversing valve 91 keeps the circulation mode, the suction pump 4 continuously extracts the material at the bottom of the stirring barrel 1, sends the material back to the premixing unit 3 through the circulation pipe 912, and repeats the premixing-grinding-dispersion process until the material mixing degree reaches the standard; through multiple circulation, the problem of uneven material dispersion in single premixing and grinding can be solved, especially for inorganic fillers and acrylate emulsion with large density difference, local agglomeration can be effectively avoided, and the overall uniform mixing can be ensured; after the mixing is completed, the three-way reversing valve 91 is switched to the discharge mode, the material is discharged through the discharge pipe 911, and the preparation of the acrylic pressure-sensitive adhesive color paste is completed.

[0032] The above are preferred embodiments of the present application, and do not limit the protection scope of the present application, therefore: any equivalent changes made on the structure, shape, principle of the present application should be covered in the protection scope of the present application.

Claims

1. An acrylic pressure-sensitive adhesive color paste preparation apparatus comprising a stirring tank (1), characterized in that: The stirring barrel (1) is provided with a stirring mechanism (2) and a premixing unit (3); the stirring mechanism (2) comprises a plurality of stirring blades (21) coaxially arranged in the stirring barrel (1) and capable of rotating; The premixing unit (3) comprises a driving mechanism (8), a circulating mechanism (9) and a separating mechanism (10) driven by the driving mechanism (8); the circulating mechanism (9) can deliver the material at the bottom of the stirring barrel (1) into the separating mechanism (10); the separating mechanism (10) comprises a first rotating cylinder (101) coaxially arranged with the stirring barrel (1) and a first rotating disc (102) coaxially arranged with the first rotating cylinder (101) and having opposite rotating directions; the first rotating cylinder (101) is an inverted circular truncated cone body with an open top end, and a premixing cavity (1011) is arranged in the circular truncated cone body; the premixing cavity (1011) and the lower end surface of the first rotating disc (102) form a premixing space (1012); a plurality of filter holes (1013) are formed in the cylinder wall of the first rotating cylinder (101) and communicate with the premixing cavity (1011) and the inside of the stirring barrel (1); a first grinding part (1014) composed of a plurality of grinding particles is arranged on the upper end surface of the first rotating cylinder (101); A second grinding part (1021) composed of a plurality of grinding particles is arranged on the side wall of the first rotating disc (102), the first grinding part (1014) and the second grinding part (1021) form a grinding space (103), and the grinding space (103) gradually decreases along the radial direction of the first rotating cylinder (101); the first rotating disc (102) can periodically move up and down along the axial direction of the first rotating cylinder (101) while rotating.

2. The acrylic pressure-sensitive adhesive color paste preparation apparatus according to claim 1, characterized in that: A first feeding port (1022) is formed in the upper end surface of the first rotating disc (102), and an annular second rotating disc (104) is coaxially and fixedly arranged on the upper end surface of the first rotating disc (102); the upper end surface of the second rotating disc (104) is provided with a coaxial and annular temporary storage cavity (1041), and the temporary storage cavity (1041) is communicated with the first feeding port (1022) through a pipeline.

3. The acrylic pressure-sensitive adhesive color paste preparation apparatus according to claim 1, characterized in that: The lower part of the stirring barrel (1) is funnel-shaped, the bottom wall of the stirring barrel (1) is communicated with a suction pump (4) through a pipeline, and the upper part of the stirring barrel (1) is fixedly provided with an inorganic filler conveying pipe (5); the circulating mechanism (9) comprises a three-way reversing valve (91) communicated with the other end of the suction pump (4) through a pipeline, and a third fixed disc (92) coaxially arranged with the second rotating disc (104) and in the shape of a ring; the specification of the third fixed disc (92) is matched with the specification of the temporary storage cavity (1041), and the third fixed disc (92) is both rotationally connected and up-down slidingly connected with the second rotating disc (104); one end of the three-way reversing valve (91) is provided with a discharge pipe (911), and the other end is provided with a circulating pipe (912); the third fixed disc (92) is provided with a second feeding port (921) and a third feeding port (922), the second feeding port (921) is communicated with the circulating pipe (912), and the third feeding port (922) is communicated with the inorganic filler conveying pipe (5); and the third fixed disc (92) is fixedly connected with the stirring barrel (1).

4. The acrylic pressure-sensitive adhesive color paste preparation apparatus according to claim 1, characterized in that: The driving mechanism (8) comprises a placing rack (6) and a bearing rack (7) fixedly arranged on the stirring barrel (1), the placing rack (6) is fixedly provided with a first motor (81), and the output shaft of the first motor (81) is fixedly provided with a first bevel gear (82); the first rotating cylinder (101) is coaxially fixedly provided with a first transmission rod (83), the upper end surface of the first transmission rod (83) is rotationally abutted with the placing rack (6), and the first transmission rod is coaxially fixedly provided with a second bevel gear (84) engaged with the first bevel gear (82).

5. The acrylic pressure-sensitive adhesive color paste preparation apparatus according to claim 4, characterized in that: The placing rack (6) is rotationally provided with a third bevel gear (85) engaged with the first bevel gear (82); the upper end surface of the third bevel gear (85) is provided with a first through hole (851), and the side wall of the first through hole (851) is provided with a first sliding groove (852); the second rotating disc (104) is coaxially fixedly provided with a second transmission cylinder (110), and the side wall of the second transmission cylinder (110) is provided with a first sliding block (1102) matched with the first sliding groove (852); the side wall of the second transmission cylinder (110) located in the premixing space (1012) is provided with a plurality of stirring rods (1101).

6. The acrylic pressure-sensitive adhesive color paste preparation apparatus according to claim 5, characterized in that: The side wall of the first transmission rod (83) is provided with a plurality of first inclined blocks (831), and the side wall of the second transmission cylinder (110) is provided with a plurality of second inclined blocks (1103) matched with the first inclined blocks (831).

7. The acrylic pressure-sensitive adhesive color paste preparation apparatus according to claim 4, characterized in that: The lower end surface of the placing rack (6) is coaxially rotationally connected with a first rotating ring (86), and the lower end surface of the first rotating ring (86) is fixedly provided with a plurality of first sliding cylinders (87); the second transmission cylinder is coaxially fixedly provided with a fourth fixed disc (88), and the upper end surface of the fourth fixed disc (88) is provided with a plurality of first sliding rods (89) matched with the first sliding cylinders (87); and the first sliding rods (89) are provided with first compression springs (810) between the upper end surfaces and the top walls of the first sliding cylinders (87).

8. The acrylic pressure-sensitive adhesive color paste preparation apparatus according to claim 1, characterized in that: The bottom of the stirring barrel (1) is coaxially and fixedly provided with a second motor (23), and the second motor (23) is sealingly and drivingly connected with a plurality of stirring blades (21) in the stirring barrel (1).

9. The acrylic pressure-sensitive adhesive color paste preparation apparatus according to claim 1, characterized in that: A plurality of rotating frames (105) are fixedly arranged on the second rotating disc (104), each rotating frame (105) is rotationally connected with a driving rod (106), each driving rod (106) is provided with a spoiler (107), and the side wall perpendicular to the rotating frame (105) is provided with an arc-shaped part (1071); a torsion spring (108) is sleeved on each driving rod (106), one end of the torsion spring (108) is fixedly connected with the driving rod (106), and the other end of the torsion spring (108) is fixedly connected with the rotating frame (105); a plurality of trigger rods (109) are fixedly arranged on the upper end face of the first rotating cylinder (101), and the upper end face of each trigger rod (109) is in a spherical shape.

10. An acrylic pressure-sensitive adhesive color paste preparation process using the acrylic pressure-sensitive adhesive color paste preparation apparatus according to claim 9, characterized by: Comprising the following steps: S1, starting the first motor (81) to drive the first rotating cylinder (101) and the first rotating disc (102) to rotate in opposite directions, and starting the second motor (23) to drive the stirring blade (21) to rotate; S2, the new inorganic filler enters the temporary storage cavity (1041) through the inorganic filler conveying pipe (5) and the third feeding port (922), and the material at the bottom of the stirring barrel (1) enters the temporary storage cavity (1041) through the suction pump (4), the circulating pipe (912) and the second feeding port (921), and then the two types of materials enter the premixing space (1012) through the first feeding port (1022); S3, the stirring rod (1101) in the premixing space (1012) preliminarily disperses the material, the centrifugal action of the first rotating cylinder (101) makes the qualified material enter the stirring barrel (1) through the filter hole (1013), and the unqualified material enters the grinding space (103); S4, the first grinding part (1014) and the second grinding part (1021) grind the material in opposite directions, the spoiler (107) dynamically adjusts the refraction angle of the material, and the first inclined block (831) and the second inclined block (1103) cooperate to make the second transmission cylinder (110) reciprocate to enhance the grinding; S5, keep the circulation mode, repeat steps 2-4 until the material mixing reaches the standard; S6, switch the three-way reversing valve (91) to the discharge mode, and discharge the finished product color paste.

Images