Color-changing pearlescent color master batch and production process thereof

Abstract

The invention discloses and relates to the technical field of pearlescent color master batch production. The color-changing pearlescent color master batch is prepared from the following components in parts by mass: 85 to 90 percent of carrier resin, 2 to 5 percent of pearlescent pigment, 2 to 3 percent of dispersing agent, 1 to 2 percent of lubricating agent and 1 to 3 percent of toner, wherein the pearlescent pigment, the dispersing agent and the lubricating agent are premixed to form a mixture A, the carrier resin and the lubricating agent are premixed to form a mixture B, and the mixture A and the mixture B are mixed to obtain C; according to the technical scheme, the pearlescent pigment is premixed with the dispersing agent and the lubricating agent, the carrier resin and the lubricating agent are premixed at the same time, and the flowability of the raw materials is improved through the arrangement of the lubricating agent, so that in the mixing process of the mixture A and the mixture A, caking is greatly reduced, the carrier resin can be fully wetted, and the mixing effect of the mixture A and the mixture B is improved. And the master batch quality is improved.

Description

Technical Field

[0001] The invention relates to the technical field of pearlescent masterbatch production, in particular to a color-changing pearlescent masterbatch and a production process thereof. Background Art

[0002] Pearlescent masterbatch is an additive containing pearlescent pigments, which is mainly used to improve the pearlescent effect of plastic products and enhance their decorativeness and attractiveness. It is a mixture of resin and a large amount of pigments or dyes with high concentration of color. It is an aggregate made by uniformly loading an extraordinary amount of pigments or dyes in the resin.

[0003] During production, the raw materials and additives need to be put into a high-speed disperser for mixing. After the additives are put into the high-speed disperser, the temperature rises slightly, and the additives wrap some powder raw materials together. The raw materials are wrapped into agglomerates, and the raw materials in the agglomerates cannot be fully wetted. In this way, in the subsequent screw extrusion process, problems such as material blockage and poor color dispersion often occur, which have a negative impact on the production of color-changing pearlescent masterbatch. Summary of the invention

[0004] The purpose of the present invention is to provide a color-changing pearlescent masterbatch and a production process thereof to solve the deficiencies in the above-mentioned prior art.

[0005] In order to achieve the above object, the present invention provides the following technical solution: a color-changing pearlescent masterbatch, which is composed of the following components by mass: 85%-90% of carrier resin, 2%-5% of pearlescent pigment, 2%-3% of dispersant, 1%-2% of lubricant, and 1%-3% of toner;

[0006] The pearlescent pigment, dispersant and lubricant are pre-mixed to form mixture A, the carrier resin and lubricant are pre-mixed to form mixture B, and mixture A and mixture B are mixed to obtain C.

[0007] A color-changing pearlescent masterbatch production process includes a mixing device, a carrier resin, a pearlescent pigment, a dispersant, a lubricant, and a toner are mixed through the mixing device, the mixing device includes a high-speed mixing barrel and a low-speed mixing barrel, and further includes the following steps:

[0008] S1: putting pearlescent pigment, dispersant and lubricant into a low-speed mixing drum 2 for mixing to form a slurry to obtain a mixture A, and putting a carrier resin and a lubricant into a high-speed mixing drum 1 for premixing, which is then stirred at a low speed;

[0009] S2: Turn on high-speed stirring, passively open the low-speed mixing barrel, and evenly sprinkle the mixture A into the high-speed mixing barrel, so that the mixture A and the mixture B are mixed to obtain the mixture C;

[0010] S3: Adding toner into the high-speed mixing cylinder to color the mixture C;

[0011] S4: The toned mixture C is melt-extruded through a twin-screw extruder and then granulated.

[0012] S5: Dry the granulated masterbatch and then package it.

[0013] Preferably, the stirring speed in S1 is controlled at 200-300 r / min for about 10-12 minutes.

[0014] Preferably, in S4, the extrusion temperature is usually controlled at 150-180°C, and the screw speed is 200-300 r / min.

[0015] Preferably, the mixing device comprises a high-speed mixing barrel and a low-speed mixing barrel, wherein the low-speed mixing barrel is fixedly mounted on the upper part of the high-speed mixing barrel, and further comprises:

[0016] A stirring part, comprising a stirring shaft, a first stirring paddle and a stirring assembly, wherein the stirring shaft is rotatably connected in the high-speed mixing barrel, the upper end of the stirring shaft extends into the low-speed mixing barrel, the stirring assembly comprises a partition plate, a paddle and a connecting hole, the partition plate is fixedly mounted on the upper part of the stirring shaft, a plurality of the paddles are slidably connected to the partition plate, and the connecting hole is provided on the partition plate;

[0017] Wherein, the stirring shaft has a first state, a second state and a third state;

[0018] In the first state, the paddle blocks the connecting hole, and the rotation of the stirring shaft drives the paddle to rotate synchronously, so that the paddle stirs the raw materials in the low-speed mixing barrel;

[0019] A blocking plate is fixedly installed in the high-speed mixing barrel, and a material drop hole is opened on the blocking plate;

[0020] A flow balancing disk is rotatably connected to the blocking disk, and a storage hole is provided on the flow balancing disk;

[0021] In the second state, the speed of the stirring shaft is increased, the blades are passively moved, and the raw materials flow to the upper part of the high-speed mixing barrel through the connecting holes, so that the storage holes are filled with raw materials;

[0022] The transmission part, in the third state, the rotation speed of the stirring shaft is further increased, and the transmission part receives the transmission of the stirring shaft, so that the transmission part drives the flow equalizing disk to rotate. During the rotation process, when the drop hole and the storage hole coincide, the raw materials fall to the lower part of the high-speed mixing barrel.

[0023] Preferably, the stirring assembly also includes a slider, a guide rail, and a first elastic member. The upper portion of the slider is fixedly mounted on the paddle, the lower portion of the slider is slidably connected to the connecting hole, the guide rail passes through the slider, the first elastic member is movably sleeved on the guide rail, and the first elastic member applies a thrust to the slider in the direction of the stirring shaft.

[0024] Preferably, the transmission part includes an outer sleeve, an inner rotating part, an active part, a center disk, a telescopic part, a connecting belt, a driving part, and a driven wheel. The outer sleeve is fixedly mounted on the sealing disk, the inner rotating part is rotatably connected in the outer sleeve, the active part is arranged on the upper part of the inner rotating part, the driven wheel is rotatably connected in the high-speed mixing barrel, the driving part and the driven wheel are coaxially mounted, and the driven wheel and the active part are connected via a connecting belt transmission. The center disk is fixedly mounted on the stirring shaft, the telescopic part is slidably inserted in the center disk, and the circumferential surface of the flow equalizing disk is provided with a gear ring, and the driving part and the gear ring are meshing.

[0025] Preferably, the tension member is arranged in the central disk, and applies a pulling force to the telescopic member in the direction of the stirring shaft.

[0026] Preferably, it also includes a reset mechanism, and after the transmission part is disconnected, the reset mechanism drives the flow equalizing disk to reset so that the drop hole and the storage hole are staggered.

[0027] Preferably, the reset mechanism includes a first fixed block, a second elastic member, and a second fixed block, the first fixed block is fixedly mounted on the gear ring, the second fixed block is fixedly mounted on the sealing disk, one end of the second elastic member is fixedly mounted on the first fixed block, and the other end of the second elastic member is fixedly mounted on the second fixed block.

[0028] In the above technical scheme, the present invention provides a color-changing pearlescent masterbatch and its production process, in which the pearlescent pigment is premixed with a dispersant and a lubricant, and the carrier resin and the lubricant are premixed at the same time. The fluidity of the raw materials is increased by the setting of the lubricant, so that in the mixing process of mixture A and mixture A, agglomeration is greatly reduced, the carrier resin can be fully wetted, and the quality of the masterbatch is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0030] Figure 1 The overall structure schematic diagram of a color-changing pearlescent masterbatch and its production process of the present invention;

[0031] Figure 2 It is a schematic structural diagram of a color-changing pearlescent masterbatch and a production process thereof in the first state of the present invention;

[0032] Figure 3 The invention discloses a color-changing pearlescent masterbatch and its production process. Figure 2 The schematic diagram of the structure after the enlargement of A in the middle;

[0033] Figure 4 It is a schematic structural diagram of a color-changing pearlescent masterbatch and its production process in the third state of the present invention;

[0034] Figure 5 The invention discloses a color-changing pearlescent masterbatch and its production process. Figure 4 The schematic diagram of the structure after the enlargement of B in the middle;

[0035] Figure 6 The schematic diagram of the transmission structure of a color-changing pearlescent masterbatch and its production process of the present invention;

[0036] Figure 7 It is a structural schematic diagram of a color-changing pearlescent masterbatch and a stirring assembly of a production process thereof in a first state according to the present invention;

[0037] Figure 8 It is a schematic diagram of a stirring component of a color-changing pearlescent masterbatch and a production process thereof in a second state according to the present invention;

[0038] Fig. 9 The invention discloses a color-changing pearlescent masterbatch and its production process. Figure 8 Middle bottom view;

[0039] Fig.10 The invention discloses a color-changing pearlescent masterbatch and its production process. Fig. 9 Bottom view of

[0040] Fig.11 This is a schematic diagram of the sealing disk structure of a color-changing pearlescent masterbatch and its production process of the present invention;

[0041] Fig.12 This is a schematic diagram of the paddle and its component structure of a color-changing pearlescent masterbatch and its production process of the present invention;

[0042] Fig.13 A schematic diagram of a reset mechanism of a color-changing pearlescent masterbatch and a production process thereof according to the present invention;

[0043] Fig.14 It is a schematic diagram of the central disk and telescopic parts structure of a color-changing pearlescent masterbatch and its production process of the present invention;

[0044] Fig.15The present invention is a schematic diagram of a shielding cover structure of a color-changing pearlescent masterbatch and its production process.

[0045] Explanation of the accompanying drawings: 1. high-speed mixing barrel; 11. first feed port; 2. low-speed mixing barrel; 21. second feed port; 3. stirring shaft; 31. first stirring paddle; 32. driving motor; 4. stirring assembly; 41. paddle; 411. slider; 42. partition plate; 421. connecting hole; 43. first elastic member; 44. guide rail; 5. flow equalizing disk; 51. storage hole; 52. gear ring; 6. sealing disk; 61. drop hole; 7. transmission part; 71. outer sleeve; 72. inner rotating part; 721. adapting groove; 73. active part; 74. center disk; 75. telescopic part; 751. tension member; 76. connecting belt; 78. driving member; 79. driven wheel; 9. reset mechanism; 91. first fixed block; 92. second elastic member; 93. second fixed block. DETAILED DESCRIPTION

[0046] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0047] See also Figure 1-15 , a color-changing pearlescent masterbatch provided by an embodiment of the present invention, the color-changing pearlescent masterbatch is composed of the following components in parts by weight: 85%-90% of carrier resin, 2%-5% of pearlescent pigment, 2%-3% of dispersant, 1%-2% of lubricant, and 1%-3% of toner;

[0048] The pearlescent pigment, dispersant and lubricant are pre-mixed to form mixture A, the carrier resin and lubricant are pre-mixed to form mixture B, and mixture A and mixture B are mixed to obtain C.

[0049] In the present invention, the pearlescent pigment is premixed with the dispersant and the lubricant, and the carrier resin and the lubricant are premixed at the same time, and the fluidity of the raw materials is increased by the provision of the lubricant. In this way, during the mixing process of mixture A and mixture A, when the pearlescent pigment and the carrier resin are combined, the agglomeration is greatly reduced, so that the carrier resin can be fully wetted, thereby improving the quality of the masterbatch.

[0050] A color-changing pearlescent masterbatch production process includes a mixing device, a carrier resin, a pearlescent pigment, a dispersant, a lubricant, and a toner are mixed through the mixing device, the mixing device includes a high-speed mixing barrel 1 and a low-speed mixing barrel 2, and further includes the following steps:

[0051] S1: putting pearlescent pigment, dispersant and lubricant into low-speed mixing drum 2 for mixing to obtain mixture A, and putting carrier resin and lubricant into high-speed mixing drum 1 for premixing, which is now in low-speed stirring;

[0052] S2: high-speed stirring is started, the low-speed mixing barrel 2 is passively opened, and the mixture A is evenly sprinkled into the high-speed mixing barrel 1, so that the mixture A and the mixture B are mixed to obtain a mixture C;

[0053] S3: adding toner into the high-speed mixing drum 1 to color the mixture C;

[0054] S4: The toned mixture C is melt-extruded through a twin-screw extruder and then granulated.

[0055] S5: Dry the granulated masterbatch and then package it.

[0056] In S1, the stirring speed is controlled at 200-300 r / min for about 10-12 minutes.

[0057] In S4, the extrusion temperature is usually controlled at 150-180°C and the screw speed is 200-300r / min.

[0058] In an embodiment of the present invention, pearlescent pigment, dispersant and lubricant are put into a low-speed mixing drum 2 for premixing to form a mixture A, and carrier resin and lubricant are put into a high-speed mixing drum 1 for premixing to form a mixture B. After the premixing is completed, mixture A and mixture B are mixed to obtain mixture C. Through the above process, agglomeration of the carrier resin and pearlescent pigment when mixed can be effectively avoided, thereby ensuring the color stability of the masterbatch.

[0059] According to the above process flow, in the mixing process of mixture A and mixture B, in order to maximize the uniformity of mixture A and mixture B when they are in contact, we proposed a mixing device, which can pre-mix mixture A and mixture B at the same time, and in the mixing process of mixture A and mixture B, can evenly disperse mixture A on mixture B, thereby improving the uniformity of mixing and reducing the production time of masterbatch.

[0060] The mixing device comprises a high-speed mixing barrel 1 and a low-speed mixing barrel 2, wherein the low-speed mixing barrel 2 is fixedly mounted on the upper part of the high-speed mixing barrel 1, and further comprises:

[0061] A stirring part, comprising a stirring shaft 3, a first stirring paddle 31 and a stirring assembly 4, wherein the stirring shaft 3 is rotatably connected in the high-speed mixing barrel 1, and the upper end of the stirring shaft 3 extends into the low-speed mixing barrel 2, and the stirring assembly 4 comprises a partition plate 42, a paddle 41 and a connecting hole 421, wherein the partition plate 42 is fixedly mounted on the upper part of the stirring shaft 3, a plurality of the paddles 41 are slidably connected to the partition plate 42, and the connecting hole 421 is provided on the partition plate 42;

[0062] Wherein, the stirring shaft 3 has a first state, a second state and a third state;

[0063] In the first state, the paddle 41 blocks the communication hole 421, and the stirring shaft 3 rotates to drive the paddle 41 to rotate synchronously, so that the paddle 41 stirs the raw materials in the low-speed mixing barrel 2;

[0064] A blocking plate 6 is fixedly installed in the high-speed mixing barrel 1, and a material drop hole 61 is formed on the blocking plate 6;

[0065] The flow balancing plate 5 is rotatably connected to the blocking plate 6, and a storage hole 51 is provided on the flow balancing plate 5;

[0066] In the second state, the speed of the stirring shaft 3 is increased, the blade 41 moves passively, and the raw material flows to the upper part of the high-speed mixing barrel 1 through the connecting hole 421, so that the storage hole 51 is filled with the raw material;

[0067] The transmission part 7, in the third state, the rotation speed of the stirring shaft 3 is further increased, and the transmission part 7 receives the transmission of the stirring shaft 3, so that the transmission part 7 drives the equalizing plate 5 to rotate. During the rotation, when the drop hole 61 and the storage hole 51 coincide with each other, the raw materials fall to the lower part of the high-speed mixing barrel 1.

[0068] In an embodiment of the present invention, the lower part of the low-speed mixing barrel 2 is connected to the upper part of the high-speed mixing barrel 1, and the stirring shaft 3 extends into the low-speed mixing barrel 2 and the high-speed mixing barrel 1 at the same time. A first stirring paddle 31 is arranged at the lower part of the stirring shaft 3, and a first feed port 11 is arranged on the high-speed mixing barrel 1. The first feed port 11 is used to add raw materials required for the mixture B. A second feed port 21 is arranged on the low-speed mixing barrel 2, and the raw materials required for the mixture A enter the low-speed mixing barrel 2 from the second feed port 21. A driving motor 32 is arranged at the lower part of the high-speed mixing barrel 1. The driving motor 32 is used to drive the stirring shaft 3 to rotate. The rotation of the stirring shaft 3 drives the first stirring paddle 31 to rotate, and then the raw materials in the high-speed mixing barrel 1 are stirred and mixed to form a mixture B. The stirring component 4 is located in the low-speed mixing barrel 2, and is used to stir the raw materials in the low-speed mixing barrel 2, so that the raw materials added to the low-speed mixing barrel 2 are premixed into a mixture A.

[0069] The partition plate 42 is fixedly mounted on the stirring shaft 3, and the partition plate 42 is slidably connected to the low-speed mixing barrel 2, so that the partition plate 42 can rotate with the stirring shaft 3, and the blades 41 are evenly distributed on the partition plate 42. When the stirring shaft 3 is in the first state, the stirring shaft 3 rotates at a low speed. Figure 2-3As shown, at this time, the paddle 41 blocks the connecting hole 421, so as to ensure that the space above the low-speed mixing barrel 2 is separated from the high-speed mixing barrel 1. When the raw materials are premixed, the paddle 41 can stir the raw materials in the low-speed mixing barrel 2 through the low-speed rotation of the stirring shaft 3 to form a mixture A;

[0070] After the premixing is completed, the stirring shaft 3 is turned on to the second state, and the speed of the stirring shaft 3 increases. At this time, the blade 41 is affected by the centrifugal force and moves away from the stirring shaft 3. Figure 4-5 At this time, the paddle 41 cannot block the connecting hole 421, and the mixture A will fall into the high-speed mixing barrel 1 from the connecting hole 421. By utilizing the change in the rotation speed of the stirring shaft 3 during the production process, the paddle 41 is passively driven to move, so that the high-speed mixing barrel 1 and the low-speed mixing barrel 2 are connected, and the automatic feeding of the mixture A is realized;

[0071] The blocking disk 6 is fixedly mounted on the upper part of the high-speed mixing barrel 1, so that an independent cavity is isolated from the upper part of the high-speed mixing barrel 1, the flow balancing disk 5 is rotatably connected to the blocking disk 6, the storage holes 51 are evenly distributed on the flow balancing disk 5, and the storage holes 51 opened on the flow balancing disk 5 are blocked by the blocking disk 6, and the mixture A falling from the low-speed mixing barrel 2 can fall into the storage holes 51 and be temporarily stored through the storage holes 51;

[0072] After the mixture A completely flows into the high-speed mixing barrel 1, the rotation speed of the stirring shaft 3 is further increased. At this time, the stirring shaft 3 is in the third state. In the third state, the transmission part 7 receives the transmission of the stirring shaft 3, so that the transmission part 7 drives the equalizing disk 5 to rotate, and the sealing disk 6 is provided with a drop hole 61. After the equalizing disk 5 rotates to a specific angle, the storage hole 51 and the drop hole 61 coincide with each other. At this time, the mixture A will fall from the drop hole 61 to the lower part of the high-speed mixing barrel 1 to complete the mixing of the mixture A and the mixture B. Through the change of the rotation speed of the stirring shaft 3 during the production process, the storage hole 51 is passively opened, so that the mixture A in the storage hole 51 can be evenly scattered to the lower part of the high-speed mixing barrel 1, so that the mixture A and the mixture B are evenly mixed, further avoiding agglomeration and improving the production quality of the masterbatch.

[0073] In an embodiment of the present invention, the stirring assembly 4 also includes a slider 411, a guide rail 44, and a first elastic member 43. The upper portion of the slider 411 is fixedly mounted on the paddle 41, the lower portion of the slider 411 is slidably connected to the connecting hole 421, the guide rail 44 passes through the slider 411, and the first elastic member 43 is movably sleeved on the guide rail 44. The first elastic member 43 applies a thrust to the slider 411 in the direction of the stirring shaft 3.

[0074] The displacement direction of the paddle 41 can be limited by the slider 411, and the first elastic member 43 squeezes the slider 411, so that the slider 411 drives the paddle 41 to generate a tendency to move toward the stirring shaft 3. When rotating at a low speed, under the elastic force of the first elastic member 43, the slider 411 drives the paddle 41 to move toward the stirring shaft 3, so that the paddle 41 blocks the connecting hole 421. In this way, when premixing, the low-speed mixing barrel 2 and the high-speed mixing barrel 1 are independent of each other. After the premixing is completed, the speed of the stirring shaft 3 is increased. At this time, Under the action of centrifugal force, the paddle 41 will have a tendency to move away from the stirring shaft 3. Under the action of centrifugal force, the first elastic member 43 will be compressed, so that the paddle 41 will be displaced, and the connecting hole 421 will be exposed, so that the mixture A will flow into the high-speed mixing barrel 1 from the connecting hole 421. In this way, the change in the rotation speed of the stirring shaft 3 during the production process is utilized to passively drive the paddle 41 to move, so that the high-speed mixing barrel 1 and the low-speed mixing barrel 2 are connected, thereby realizing the automatic feeding of the mixture A without the need for manual or other automated equipment to control.

[0075] In the embodiments of the present invention, please refer to Figure 2-6 , Fig.14 The transmission part 7 includes an outer sleeve 71, an inner rotating member 72, an active member 73, a center disk 74, a telescopic member 75, a connecting belt 76, a driving member 78, and a driven wheel 79. The outer sleeve 71 is fixedly mounted on the sealing disk 6, the inner rotating member 72 is rotatably connected in the outer sleeve 71, the active member 73 is arranged on the upper part of the inner rotating member 72, the driven wheel 79 is rotatably connected in the high-speed mixing barrel 1, the driving member 78 and the driven wheel 79 are coaxially mounted, and the driven wheel 79 and the active member 73 are connected by a connecting belt 76. The center disk 74 is fixedly mounted on the stirring shaft 3, the telescopic member 75 is slidably inserted in the center disk 74, and the circumferential surface of the flow equalizing disk 5 is provided with a gear ring 52, and the driving member 78 and the gear ring 52 are meshed.

[0076] When the agitator shaft 3 rotates, the telescopic member 75 will extend out of the center disk 74 under the action of centrifugal force. A ball is embedded in the end of the telescopic member 75, and the ball rolls against the inner wall of the inner rotating member 72. In the third state, the agitator shaft 3 rotates at a high speed. At this time, the centrifugal force exerted on the telescopic member 75 is relatively large. An adapting groove 721 is provided on the inner wall of the inner rotating member 72. When the telescopic member 75 moves to the adapting groove 721, it will be stuck in the adapting groove 721. At this time, the telescopic member 75 will generate a torque on the inner rotating member 72, causing the inner rotating member 72 to rotate. During the rotation of the inner rotating member 72, the active member 73 will be synchronously driven to rotate. The active member 73 and the driven wheel 79 are linked by the connecting belt 76, so the driven wheel 79 rotates synchronously. When the wheel 79 rotates, the driving member 78 coaxially mounted therewith also rotates, and the driving member 78 is meshed with the ring gear 52, so that the rotation of the driving member 78 will drive the ring gear 52 to rotate, and the ring gear 52 is mounted on the flow equalizing disk 5, so that the flow equalizing disk 5 rotates synchronously. During rotation, the storage hole 51 opened on the flow equalizing disk 5 and the drop hole 61 opened on the blocking disk 6 overlap, so that the mixture A will smoothly fall into the lower part of the high-speed mixing barrel 1, and the mixture A and the mixture B are mixed. By changing the rotation speed of the stirring shaft 3 during the production process, the storage hole 51 is passively opened, so that the mixture A in the storage hole 51 can be evenly scattered to the lower part of the high-speed mixing barrel 1, so that the mixture A and the mixture B are evenly mixed, further avoiding agglomeration and improving the production quality of the masterbatch.

[0077] See also Fig.14 The tension member 751 is disposed in the center disk 74, and the tension member 751 applies a pulling force to the telescopic member 75 in the direction of the stirring shaft 3. When the rotation speed of the stirring shaft 3 decreases, the telescopic member 75 will retract toward the center disk 74 under the pulling force of the tension member 751.

[0078] In another embodiment of the present invention, please refer to Figure 2-6 , Fig.13 , and also includes a reset mechanism 9. After the transmission part 7 is disconnected, the reset mechanism 9 drives the flow equalizing disk 5 to reset, so that the blanking hole 61 and the storage hole 51 are staggered. The reset mechanism 9 includes a first fixed block 91, a second elastic member 92, and a second fixed block 93. The first fixed block 91 is fixedly mounted on the gear ring 52, the second fixed block 93 is fixedly mounted on the blocking disk 6, one end of the second elastic member 92 is fixedly mounted on the first fixed block 91, and the other end of the second elastic member 92 is fixedly mounted on the second fixed block 93.

[0079] When the flow equalizing disk 5 rotates, the second elastic member 92 will be compressed. When it is compressed to the maximum, the flow equalizing disk 5 cannot rotate. At this time, the storage hole 51 corresponds to the discharge hole 61, and the mixture A is discharged. After the mixing is completed, the stirring shaft 3 stops. At this time, the telescopic member 75 retracts, and the elastic force of the second elastic member 92 drives the flow equalizing disk 5 to rotate. In this way, the flow equalizing disk 5 is reset and then blocked by the blocking disk 6 again, and automatically reset to facilitate the next mixing.

[0080] Furthermore, after the second elastic member 92 reaches the maximum compression, the equalizing disk 5 cannot continue to rotate, while the stirring shaft 3 is still rotating at high speed. At this time, the telescopic member 75 will inevitably disengage from the adapting groove 721. After the stirring shaft 3 rotates one circle, the telescopic member 75 rotates back to the adapting groove 721. In this way, each time it moves to this position, vibration will be generated, which will be transmitted to the equalizing disk 5 and the sealing disk 6, so that the mixture A can be fully discharged.

[0081] In another embodiment of the present invention, please refer to Fig.15 When the mixture A falls to the flow equalizing disk 5, it is easy to contaminate the connecting belt 76, which affects the transmission. A shielding cover can be set above the transmission part 7 to prevent the raw materials from falling directly on the connecting belt 76, thereby protecting the transmission part 7.

[0082] The above description is only by way of illustration of certain exemplary embodiments of the present invention. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A color-changing pearlescent masterbatch, characterized in that: The color-changing pearlescent masterbatch is composed of the following components in parts by mass: 85%-90% of carrier resin, 2%-5% of pearlescent pigment, 2%-3% of dispersant, 1%-2% of lubricant, and 1%-3% of toner; The pearlescent pigment, dispersant and lubricant are pre-mixed to form mixture A, the carrier resin and lubricant are pre-mixed to form mixture B, and mixture A and mixture B are mixed to obtain C.

2. A process for producing a color-changing pearlescent masterbatch, which is used for producing the color-changing pearlescent masterbatch according to claim 1, characterized in that: The invention comprises a mixing device, and the carrier resin, pearlescent pigment, dispersant, lubricant and toner are mixed through the mixing device, the mixing device comprises a high-speed mixing barrel (1) and a low-speed mixing barrel (2), and further comprises the following steps: S1: putting pearlescent pigment, dispersant and lubricant into a low-speed mixing drum (2) to mix to form a slurry to obtain a mixture A, and putting a carrier resin and a lubricant into a high-speed mixing drum (1) for premixing, and stirring at a low speed at this time; S2: high-speed stirring is started, the low-speed mixing barrel (2) is passively opened, and the mixture A is evenly sprinkled into the high-speed mixing barrel (1), so that the mixture A and the mixture B are mixed to obtain a mixture C; S3: adding a colorant into the high-speed mixing cylinder (1) to color the mixture C; S4: The toned mixture C is melt-extruded through a twin-screw extruder and then granulated. S5: Dry the granulated masterbatch and then package it.

3. A color-changing pearlescent masterbatch production process according to claim 2, characterized in that: In S1, the stirring speed is controlled at 200-300 r / min for about 10-12 minutes.

4. A color-changing pearlescent masterbatch production process according to claim 2, characterized in that: In S4, the extrusion temperature is usually controlled at 150-180°C and the screw speed is 200-300r / min.

5. The process for producing a color-changing pearlescent masterbatch according to claim 2, characterized in that: The mixing device comprises a high-speed mixing barrel (1) and a low-speed mixing barrel (2), wherein the low-speed mixing barrel (2) is fixedly mounted on the upper part of the high-speed mixing barrel (1), and further comprises: A stirring part, comprising a stirring shaft (3), a first stirring paddle (31) and a stirring assembly (4), wherein the stirring shaft (3) is rotatably connected in a high-speed mixing barrel (1), and the upper end of the stirring shaft (3) extends into a low-speed mixing barrel (2), and the stirring assembly (4) comprises a partition plate (42), a paddle (41) and a connecting hole (421), wherein the partition plate (42) is fixedly mounted on the upper part of the stirring shaft (3), a plurality of the paddles (41) are slidably connected to the partition plate (42), and the connecting hole (421) is provided on the partition plate (42); Wherein, the stirring shaft (3) has a first state, a second state and a third state; In the first state, the paddle (41) blocks the connecting hole (421), and the stirring shaft (3) rotates to drive the paddle (41) to rotate synchronously, so that the paddle (41) stirs the raw materials in the low-speed mixing barrel (2); A blocking plate (6) is fixedly installed in the high-speed mixing barrel (1), and a material drop hole (61) is provided on the blocking plate (6); A flow balancing disk (5) is rotatably connected to the blocking disk (6), and a storage hole (51) is provided on the flow balancing disk (5); In the second state, the rotation speed of the stirring shaft (3) is increased, the blade (41) is passively moved, and the raw material flows to the upper part of the high-speed mixing barrel (1) through the connecting hole (421), so that the storage hole (51) is filled with the raw material; The transmission part (7) is in the third state, the rotation speed of the stirring shaft (3) is further increased, and the transmission part (7) receives the transmission of the stirring shaft (3), so that the transmission part (7) drives the flow equalizing disk (5) to rotate. During the rotation process, when the drop hole (61) and the storage hole (51) overlap, the raw materials fall to the lower part of the high-speed mixing barrel (1).

6. A color-changing pearlescent masterbatch production process according to claim 5, characterized in that: The stirring assembly (4) further comprises a slider (411), a guide rail (44), and a first elastic member (43); the upper portion of the slider (411) is fixedly mounted on the paddle (41); the lower portion of the slider (411) is slidably connected to the connecting hole (421); the guide rail (44) passes through the slider (411); the first elastic member (43) is movably sleeved on the guide rail (44); and the first elastic member (43) applies a thrust to the slider (411) in the direction of the stirring shaft (3).

7. The process for producing a color-changing pearlescent masterbatch according to claim 5, characterized in that: The transmission part (7) comprises an outer sleeve (71), an inner rotating member (72), an active member (73), a center disk (74), a telescopic member (75), a connecting belt (76), a driving member (78), and a driven wheel (79); the outer sleeve (71) is fixedly mounted on the blocking disk (6); the inner rotating member (72) is rotatably connected to the outer sleeve (71); the active member (73) is arranged on the upper part of the inner rotating member (72); and the driven wheel (79) is rotatably connected to the inner rotating member (72). It is connected to a high-speed mixing barrel (1), the driving member (78) and the driven wheel (79) are coaxially installed, the driven wheel (79) and the active member (73) are connected by a connecting belt (76), the center disk (74) is fixedly installed on the stirring shaft (3), the telescopic member (75) is slidably inserted in the center disk (74), the circumferential surface of the flow equalizing disk (5) is provided with a gear ring (52), and the driving member (78) and the gear ring (52) are meshed.

8. A process for producing a color-changing pearlescent masterbatch according to claim 7, characterized in that: The tension member (751) is arranged in the central disk (74), and the tension member (751) applies a tension to the telescopic member (75) in the direction of the stirring shaft (3).

9. The process for producing a color-changing pearlescent masterbatch according to claim 5, characterized in that: It also comprises a reset mechanism (9), which drives the flow equalizing plate (5) to reset after the transmission part (7) is disconnected, so that the material drop hole (61) and the storage hole (51) are staggered.

10. A process for producing a color-changing pearlescent masterbatch according to claim 9, characterized in that: The reset mechanism (9) comprises a first fixed block (91), a second elastic member (92), and a second fixed block (93); the first fixed block (91) is fixedly mounted on the gear ring (52); the second fixed block (93) is fixedly mounted on the sealing disk (6); one end of the second elastic member (92) is fixedly mounted on the first fixed block (91); and the other end of the second elastic member (92) is fixedly mounted on the second fixed block (93).

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