Double-screw dynamic mixing device for plastic compatilizer

Abstract

The utility model relates to the technical field of plastic compatilizers, in particular to a plastic compatibilizer double-screw dynamic mixing device which comprises a base and further comprises two supports, the two supports are fixedly connected to the top of the base, long grooves are formed in the two supports in a penetrating mode, and grooves are formed in the inner sides of the two supports; the mixing unit is arranged at the top of the base, the mixing unit comprises a transmission wheel, a plate body, an auxiliary rod and a screw rod, and the transmission wheel drives the plate body to drive the screw rod to perform lifting movement under the assistance of the auxiliary rod, so that dynamic mixing is performed; the mixing unit comprises a transmission wheel arranged between the two supports, the eccentric position of one side of the transmission wheel is rotationally connected with a plate body, and according to the double-screw dynamic mixing device for the plastic compatilizer, by arranging the mixing unit, dynamic mixing can be achieved, the situation that the bonding force of two-phase interfaces is weak is avoided, and an obvious phase separation structure is formed is avoided.

Description

Technical Field

[0001] This utility model relates to the field of plastic compatibilizer technology, specifically to a twin-screw dynamic mixing device for plastic compatibilizers. Background Technology

[0002] Plastic compatibilizers are additives used to improve the compatibility of incompatible polymer systems. In plastic blending modification, different polymers have significantly different molecular structures, and direct mixing can easily lead to phase separation, resulting in a decline in material properties. Compatibilizer molecules contain affinity groups at both ends of the two polymers, which act as bridges to connect them, reduce interfacial tension, and promote uniform dispersion. This, in turn, improves the mechanical and processing properties of the blended material, expanding the application range of plastics.

[0003] In the existing compatibilizer mixing process, the material at the edge position is not easily mixed evenly, which will greatly weaken the interfacial bonding force between the two phases and form a very obvious phase separation structure. This adverse condition will have a serious negative impact on the mechanical properties of the material, resulting in a significant decrease in tensile strength and impact strength. In practical applications, when the product is subjected to external force, due to the weak interfacial bonding, the material cannot effectively transfer and disperse stress, which will easily lead to brittle fracture or internal delamination. This seriously damages the overall structural integrity and reliability of the product, greatly shortens the service life of the product, and affects its normal function. To address this, we propose a twin-screw dynamic mixing device for plastic compatibilizers. Utility Model Content

[0004] One of the technical problems this application aims to solve is that the compatibilizer at the edge position cannot be effectively and uniformly dispersed in the plastic matrix, resulting in weak interfacial bonding between the two phases and the formation of obvious phase separation structure, which greatly weakens the mechanical properties of the material.

[0005] To address the aforementioned technical problems, this application provides a twin-screw dynamic mixing device for plastic compatibilizers, including a base and further comprising:

[0006] The brackets are both fixedly connected to the top of the base, and the two brackets have a through slot and a groove on the inner side of each bracket.

[0007] A mixing unit is disposed on the top of the base. The mixing unit includes a drive wheel, a plate, an auxiliary rod, and a screw. The drive wheel drives the plate to move the screw through the auxiliary rod to perform a lifting motion, thereby achieving dynamic mixing.

[0008] In some embodiments, the mixing unit includes a transmission wheel disposed between two supports, a plate being rotatably connected to one side of the transmission wheel at an eccentric position, an auxiliary rod being fixedly connected to one side of the plate, a crossbar being inserted between the two auxiliary rods, and the two ends of the crossbar being slidably connected to two grooves respectively, a top plate being fixedly connected to the top of the plate, and a first motor being fixedly connected to the top of the top plate, the drive end of the first motor penetrating the plate and being fixedly connected to a screw.

[0009] In some embodiments, the mixing unit is configured as two sets, the two sets of mixing units are arranged opposite to each other, and the two drive wheels mesh with each other.

[0010] In some embodiments, a support plate is fixedly connected to the inner side of the bracket, a second motor is fixedly connected to the top of the support plate, and a transmission wheel is fixedly connected to the drive end of the second motor.

[0011] In some embodiments, a barrel is provided between the two supports, a base plate is rotatably connected to the bottom of the barrel, and sliders are fixedly connected to both sides of the base plate, with the two sliders slidably disposed in two long slots respectively.

[0012] In some embodiments, a third motor is fixedly connected to the top of each of the two brackets, and a lead screw is fixedly connected to the drive end of each of the two third motors. The bottom ends of the two lead screws are rotatably connected to the inner bottom of the two long slots, and the two lead screws are threadedly connected to the two sliders respectively.

[0013] In some embodiments, a gear ring is fixedly sleeved on the bottom of the barrel, a fourth motor is fixedly connected to the top of the base plate, and a drive gear is fixedly connected to the drive end of the fourth motor, the drive gear meshing with the gear ring.

[0014] This utility model has at least the following beneficial effects:

[0015] By setting up a mixing unit, two screws can be driven to rotate while pulling, achieving dynamic mixing. At the same time, the combination of lifting and rotating of the barrel can also achieve dynamic mixing. In conjunction with the mixing unit, the mixing effect is further improved, allowing the compatibilizer to be evenly dispersed in the plastic matrix, avoiding weak interfacial bonding between the two phases and the formation of obvious phase separation structure. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This utility model Figure 1 Side view;

[0018] Figure 3 This utility modelFigure 2 Enlarged view of point A;

[0019] Figure 4 This is a schematic diagram of the hybrid unit structure of this utility model;

[0020] Figure 5 This utility model Figure 4 Rear view.

[0021] In the diagram: 1. Base; 2. Support; 21. Long slot; 22. Groove; 3. Mixing unit; 31. Transmission wheel; 32. Plate; 33. Auxiliary rod; 34. Crossbar; 35. Top plate; 36. First motor; 37. Screw; 4. Support plate; 41. Second motor; 5. Barrel; 51. Bottom plate; 52. Slider; 6. Third motor; 61. Lead screw; 7. Gear ring; 71. Fourth motor; 72. Drive gear. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model. Example 1

[0023] Please see Figures 1-5 This utility model provides a technical solution:

[0024] A dynamic mixing device for plastic compatibilizers using a twin-screw 37 includes a base 1, and further includes a support 2 and a mixing unit 3. The two supports 2 are fixedly connected to the top of the base 1, and each support 2 has a through-groove 21 and a groove 22 on its inner side. The mixing unit 3 is located on the top of the base 1 and includes a drive wheel 31, a plate 32, an auxiliary rod 33, and a screw 37. The drive wheel 31 drives the plate 32 to move the screw 37 through the auxiliary rod 33 to perform a lifting motion, thereby achieving dynamic mixing.

[0025] The mixing unit 3 includes a transmission wheel 31 disposed between two supports 2. A plate 32 is rotatably connected to one side of the transmission wheel 31 at an eccentric position. An auxiliary rod 33 is fixedly connected to one side of the plate 32. A crossbar 34 is inserted between the two auxiliary rods 33. The two ends of the crossbar 34 are slidably connected to two grooves 22 respectively. A top plate 35 is fixedly connected to the top of the plate 32. A first motor 36 is fixedly connected to the top of the top plate 35. The drive end of the first motor 36 passes through the plate 32 and is fixedly connected to a screw 37. The mixing unit 3 is configured as two sets, and the two sets of mixing units 3 are arranged opposite each other. The two transmission wheels 31 mesh with each other. In addition, it should be noted that the two plates 32 and the screw 37 do not contact each other.

[0026] A support plate 4 is fixedly connected to the inner side of the bracket 2. A second motor 41 is fixedly connected to the top of the support plate 4. A transmission wheel 31 is fixedly connected to the drive end of the second motor 41. The second motor 41 drives one transmission wheel 31 to rotate, which in turn drives the other transmission wheel 31 to rotate.

[0027] In use, the second motor 41 is started, which drives one transmission wheel 31 to rotate, which in turn drives the other transmission wheel 31 to rotate. The two transmission wheels 31 rotate in opposite directions, which in turn drives the two opposing plates 32 to revolve around the center. At the same time, the two auxiliary rods 33 drive the crossbar 34 to rise and fall within the two grooves 22, which assists the two plates 32 in driving the two screws 37 to perform a lifting motion. At the same time, the two first motors 36 are started, which drive the two screws 37 to rotate. Combined with the lifting motion, dynamic mixing can be achieved.

[0028] The lifting motion is the process in which the two screws 37 move up and down within the material while following an arc-shaped trajectory. Example 2

[0029] Please see Figures 1-5 This utility model provides a technical solution:

[0030] Unlike Embodiment 1, a barrel 5 is provided between the two supports 2. A base plate 51 is rotatably connected to the bottom of the barrel 5. Slider 52 is fixedly connected to both sides of the base plate 51. The two sliders 52 are slidably disposed in the two long grooves 21 respectively. The two sliders 52 are slidably connected in the two long grooves 21, sliding in close contact to avoid separation.

[0031] The top of each of the two brackets 2 is fixedly connected to a third motor 6, and the drive end of each of the two third motors 6 is fixedly connected to a lead screw 61. The bottom ends of the two lead screws 61 are rotatably connected to the bottom of the two long slots 21 respectively, and the two lead screws 61 are threadedly connected to the two sliders 52 respectively.

[0032] A gear ring 7 is fixedly sleeved on the bottom of the barrel body 5, and a fourth motor 71 is fixedly connected to the top of the bottom plate 51. A drive gear 72 is fixedly connected to the drive end of the fourth motor 71, and the drive gear 72 meshes with the gear ring 7.

[0033] Two third motors 6 are started, and the two third motors 6 synchronously drive the two lead screws 61 to rotate, which in turn drive the two sliders 52 to rise and fall synchronously in the same direction. That is, the bottom plate 51 and the barrel 5 are raised and lowered as a whole. At the same time, the fourth motor 71 is started, and the fourth motor 71 drives the drive gear 72 to rotate, which in turn drives the gear ring 7 to rotate. That is, the barrel 5 rotates. The combination of the lifting and rotation of the barrel 5 can also achieve dynamic mixing. In conjunction with the mixing unit 3, the mixing effect is further improved.

[0034] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0035] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention.

Claims

1. A twin-screw dynamic mixing device for plastic compatibilizers, comprising a base (1), characterized in that: It also includes: The bracket (2) is fixedly connected to the top of the base (1). The two brackets (2) are provided with a long groove (21) through the inside of the two brackets (2). The inner side of the two brackets (2) is provided with a groove (22). The mixing unit (3) is located on the top of the base (1). The mixing unit (3) includes a drive wheel (31), a plate (32), an auxiliary rod (33) and a screw (37). The drive wheel (31) drives the plate (32) to drive the screw (37) to perform a lifting motion with the assistance of the auxiliary rod (33), thereby performing dynamic mixing.

2. The twin-screw dynamic mixing device for plastic compatibilizers according to claim 1, characterized in that: The mixing unit (3) includes a transmission wheel (31) disposed between two supports (2). A plate (32) is rotatably connected to one side of the transmission wheel (31) at an eccentric position. An auxiliary rod (33) is fixedly connected to one side of the plate (32). A crossbar (34) is inserted between the two auxiliary rods (33). The two ends of the crossbar (34) are slidably connected in two grooves (22). A top plate (35) is fixedly connected to the top of the plate (32). A first motor (36) is fixedly connected to the top of the top plate (35). The driving end of the first motor (36) passes through the plate (32) and is fixedly connected to a screw (37).

3. The twin-screw dynamic mixing device for plastic compatibilizers according to claim 2, characterized in that: The mixing unit (3) is configured in two groups, with the two groups of mixing units (3) arranged opposite to each other, and the two transmission wheels (31) meshing with each other.

4. The twin-screw dynamic mixing device for plastic compatibilizers according to claim 1, characterized in that: A support plate (4) is fixedly connected to the inner side of the bracket (2), and a second motor (41) is fixedly connected to the top of the support plate (4). The drive end of the second motor (41) is fixedly connected to the transmission wheel (31).

5. The twin-screw dynamic mixing device for plastic compatibilizers according to claim 1, characterized in that: A barrel (5) is provided between the two supports (2). A base plate (51) is rotatably connected to the bottom of the barrel (5). Slider (52) is fixedly connected to both sides of the base plate (51). The two sliders (52) are respectively slidably arranged in two long grooves (21).

6. The twin-screw dynamic mixing device for plastic compatibilizers according to claim 1, characterized in that: The top of each of the two brackets (2) is fixedly connected to a third motor (6), and the drive end of each of the two third motors (6) is fixedly connected to a lead screw (61). The bottom ends of the two lead screws (61) are respectively rotatably connected to the inner bottom of the two long slots (21), and the two lead screws (61) are respectively threadedly connected to the two sliders (52).

7. The twin-screw dynamic mixing device for plastic compatibilizers according to claim 5, characterized in that: A gear ring (7) is fixedly sleeved on the bottom of the barrel (5), and a fourth motor (71) is fixedly connected to the top of the base plate (51). A drive gear (72) is fixedly connected to the drive end of the fourth motor (71), and the drive gear (72) meshes with the gear ring (7).

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