An online viscosity monitoring device for acrylic extrusion molding

Abstract

The present invention discloses an online viscosity monitoring device for acrylic extrusion molding, which relates to the field of acrylic viscosity detection, and includes an outer shell, a cover plate, a feed pipe, a detection component and a discharge pipe, wherein a plurality of mounting connection plates are welded on the outer wall of the outer shell, the cover plate is movably mounted on both ends of the outer shell, and a support plate is fixedly connected to the bottom of the outer shell. The present invention completes the extrusion of acrylic by moving a first propulsion end and a second propulsion end, and the viscosity of acrylic can be measured by calculating the resistance encountered by the first propulsion end and the second propulsion end, and in this process, the acrylic will reciprocate through the detection sheet, and the overall drag reduction effect is calculated by recording the data of the acrylic passing through the detection sheet, thereby simultaneously measuring the viscosity and drag reduction effect of the acrylic.

Description

Technical Field

[0001] The invention relates to the technical field of acrylic viscosity detection, in particular to an acrylic extrusion molding online viscosity monitoring device. Background Art

[0002] Acrylic, also known as plexiglass or polymethyl methacrylate, is a transparent thermoplastic with good light transmittance, weather resistance and chemical resistance. It is often used to make various decorative materials, billboards, display stands, lamps, etc. It is also widely used in construction, automobiles, aerospace and other fields. The quality of acrylic products is closely related to the viscosity of the extruded material. By testing the viscosity during the extrusion process, possible problems in production can be discovered and corrected in time to ensure that the quality of the final product meets the standards.

[0003] For example, a PETG acrylic composite material with publication number CN112175331A includes the following parts by weight of acrylic: 35-40 parts of PETG masterbatch; 60-70 parts of acrylic masterbatch; 3-5 parts of masterbatch; 1-2 parts of nitrate; 0.5-1 part of silicone oil; 3-5 parts of antioxidant; 1-2 parts of flow modifier; 5-6 parts of heat stabilizer; 20-35 parts of compound halogen-free flame retardant; 0.1-0.3 parts of anti-dripping agent, and the acrylic is heated and melted and mixed by a screw extruder, and the molten material is extruded into an injection mold for injection molding or pelletizing.

[0004] However, in the prior art, in the process of acrylic extrusion molding, the measurement of acrylic viscosity usually needs to wait until the material is completely extruded before it can be measured, which leads to a large lag in the overall detection. When the result is measured, the acrylic has been extruded and has had initial contact with the external environment. The entire extrusion molding process is carried out inside the extruder. Not only is there a lag in the test result, but the accuracy cannot be effectively guaranteed. The shutdown detection is relatively unrealistic, because when the basic acrylic is continuously extruded, if the machine is stopped for detection every time a certain amount of acrylic is extruded, the production progress will be greatly slowed down. In addition, the shutdown detection also has a lag and cannot be accurately adjusted according to the real-time data of the acrylic. Summary of the invention

[0005] The object of the present invention is to provide an online viscosity monitoring device for acrylic extrusion molding, so as to solve the problem that the detection instrument proposed in the above background technology can only detect the sample but cannot be adapted to the extruder.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an acrylic extrusion molding online viscosity monitoring device, comprising an outer shell, a cover plate, a feed pipe, a detection component and a discharge pipe, a plurality of mounting connection plates are welded on the outer wall of the outer shell, the outer shell is used to accommodate the detection component, the mounting connection plate is used to be installed on the inner wall or outer wall of the extruder, the cover plate is movably installed at both ends of the outer shell, the bottom of the outer shell is fixedly connected to a support plate, one end of the detection component is rotatably connected to the top of the support plate, one end of the feed pipe is fixedly connected to the inside of the detection component, one end of the discharge pipe is fixedly connected to the inside of the detection component, and a one-way valve is fixedly installed inside the feed pipe and the discharge pipe;

[0007] The detection assembly includes a docking pipe, a first propulsion end, a detection piece and a second propulsion end, wherein the first propulsion end is slidably connected to one end of the docking pipe, and the second propulsion end is slidably connected to the other end of the docking pipe, and the detection piece is fixedly installed at the center of the docking pipe, and the first propulsion end and the second propulsion end are respectively located on both sides of the detection piece;

[0008] A propulsion rod is rotatably connected inside the first propulsion end head, one end of the propulsion rod is rotatably connected to a second connecting bracket, both sides of the second connecting bracket are fixedly connected to the first connecting bracket, the first connecting bracket and the second connecting bracket are in a straight line, a transmission rod is rotatably installed on the top of the support plate, one end of the transmission rod is fixedly connected to one side of one of the first connecting brackets, the other end of the transmission rod is fixedly connected to a belt transmission assembly, the other end of the belt transmission assembly is fixedly connected to a power assembly, and the power assembly is fixedly installed inside the feed pipe.

[0009] Preferably, the second connecting bracket is rotatably mounted on the top of the support plate, and a connecting rod is rotatably connected to the junction of the second connecting bracket and the first connecting bracket, and the connecting rod is located on both sides of the docking pipe.

[0010] Preferably, the other end of the connecting rod is rotatably connected to a T-shaped rod, the connecting rod is located at both ends of the short rod of the T-shaped rod, one side of the T-shaped rod is fixedly connected to a horizontal rod, and the other end of the horizontal rod is fixedly connected to the inside of the second propulsion end.

[0011] Preferably, extension brackets are fixedly installed on both sides of the support plate, a vertical rod is fixedly installed on the upper surface of the extension bracket, one end of the T-shaped rod is fixedly connected to a positioning rod, and the positioning rod is slidably connected to the inside of the vertical rod.

[0012] Preferably, an opening is provided inside the first propulsion end, and a limiting block is fixedly installed on the inner wall of the opening, and one end of the propulsion rod is rotatably connected to the outer wall of the limiting block.

[0013] Preferably, the power assembly includes a fixed outer tube and an impeller, a power shaft is fixedly connected to the inner wall of the impeller, the power shaft and the axis of the feed pipe are located on the same straight line, both ends of the power shaft are rotatably connected to the inner wall of the fixed outer tube, and the fixed outer tube is fixedly installed on the inner wall of the feed pipe.

[0014] Preferably, a protective shell is fixedly connected to the inner wall of the fixed outer tube, a transmission shaft is rotatably connected to one side of the protective shell, and the transmission shaft passes through the protective shell.

[0015] Preferably, the transmission shaft passes through the fixed outer tube and the feed pipe, a positioning cylinder is fixedly installed at the intersection of the feed pipe and the transmission shaft, and the transmission shaft is located inside the positioning cylinder.

[0016] Preferably, a first bevel gear is fixedly mounted on the outer wall of the power shaft, a second bevel gear is fixedly mounted on one end of the transmission shaft, and the second bevel gear is meshingly connected with the first bevel gear.

[0017] Preferably, the first bevel gear and the second bevel gear are both located inside the positioning cylinder, and a butt end is welded to the other end of the transmission shaft, and the butt end is fixedly connected to another pulley in the belt transmission assembly.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] 1. In the present invention, two pipes are arranged below the detection component. During the process of extruding acrylic by the extruder, a part of the acrylic enters the detection component from the feed pipe. After the detection component detects the viscosity of the acrylic, the acrylic flows back to the inside of the extruder from the discharge pipe to continue the extrusion molding operation. This method allows the detection of the viscosity of the acrylic to be synchronized with the operation of extruding the acrylic, thereby solving the hysteresis existing in the traditional detection device and avoiding the problems of reduced production cost efficiency and increased cost caused by shutdown detection. During the detection process, the first propulsion end and the second propulsion end push the material to flow inside the docking pipe, and the movement of the first propulsion end and the second propulsion end is always opposite, continuously applying pressure to the acrylic to cause it to flow. By calculating the resistance encountered by the first propulsion end and the second propulsion end, the viscosity of the acrylic can be measured, and the acrylic will also reciprocate through the detection sheet. By recording the data of the acrylic passing through the detection sheet, the overall drag reduction effect is calculated, thereby measuring the acrylic viscosity and the drag reduction effect at the same time.

[0020] 2. In the present invention, the power source of the entire detection component is provided by the power component. The power component is arranged inside the feed pipe. When the acrylic flows through the fixed outer tube, the impeller is driven to rotate. The mechanical energy of the impeller rotation is synchronously transmitted to the transmission rod through the belt drive component, providing a sufficient power source for the operation of the detection component. There is no need to use additional power sources and functional equipment as a whole, which can effectively reduce the overall volume of the device and maintain the same operating state as the moving state of the acrylic. The viscosity is detected in real time during the extrusion of the acrylic, which greatly improves the synchronization of the detection.

[0021] 3. In the present invention, the first connecting bracket and the second connecting bracket are fixedly connected together, forming a straight line as a whole but facing opposite directions. During the transmission process, the first propulsion end and the second propulsion end can be kept in opposite directions at all times, and the propulsion rod and the horizontal rod are connected together as a whole by welding and riveting, etc., maintaining a certain structural strength and stability, and being able to adapt to the strength of acrylic. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural schematic diagram of an acrylic extrusion molding online viscosity monitoring device of the present invention;

[0023] Figure 2 It is a schematic diagram of the planar structure of an acrylic extrusion molding online viscosity monitoring device of the present invention;

[0024] Figure 3 It is a schematic diagram of the position and structure of the detection component and support plate of an acrylic extrusion molding online viscosity monitoring device of the present invention;

[0025] Figure 4 It is a schematic diagram of the planar structure of a detection component, a feed pipe and a discharge pipe of an acrylic extrusion molding online viscosity monitoring device of the present invention;

[0026] Figure 5 A top view of a detection component of an acrylic extrusion molding online viscosity monitoring device of the present invention;

[0027] Figure 6 It is a schematic diagram of the three-dimensional structure of a detection component of an acrylic extrusion molding online viscosity monitoring device of the present invention;

[0028] Figure 7 It is a schematic diagram of the three-dimensional structure of a power component of an acrylic extrusion molding online viscosity monitoring device of the present invention;

[0029] Figure 8 The present invention is a schematic diagram of the impeller plane structure of an acrylic extrusion molding online viscosity monitoring device.

[0030] In the figure: 1. outer shell; 2. cover plate; 3. feed pipe; 4. installation connecting plate; 5. detection component; 6. support plate; 7. positioning cylinder; 8. power component; 9. docking terminal; 10. belt drive component; 11. transmission rod; 12. extension bracket; 13. vertical rod; 14. discharge pipe; 51. docking pipe; 52. first propulsion terminal; 53. detection sheet; 54. first connecting bracket; 55. second connecting bracket; 56. positioning rod; 57. T-shaped rod; 58. connecting rod; 59. horizontal rod; 510. propulsion rod; 511. limit block; 512. second propulsion terminal; 81. fixed outer tube; 82. impeller; 83. transmission shaft; 84. power shaft; 85. protective shell; 86. first bevel gear; 87. second bevel gear. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the implementation regulations described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] Example 1: Reference Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6As shown: an acrylic extrusion molding online viscosity monitoring device, including an outer shell 1, a cover plate 2, a feed pipe 3, a detection component 5 and a discharge pipe 14, a plurality of mounting connecting plates 4 are welded on the outer wall of the outer shell 1, the cover plate 2 is movably installed at both ends of the outer shell 1, a support plate 6 is fixedly connected to the bottom of the outer shell 1, one end of the detection component 5 is rotatably connected to the top of the support plate 6, one end of the feed pipe 3 is fixedly connected to the inside of the detection component 5, one end of the discharge pipe 14 is fixedly connected to the inside of the detection component 5, and a one-way valve is fixedly installed inside the feed pipe 3 and the discharge pipe 14, the detection component 5 includes a docking pipe 51, a first propulsion end 52, a detection piece 53 and a second propulsion end 512, the first propulsion end 52 is slidably connected to one end of the docking pipe 51, the second propulsion end 512 is slidably connected to the other end of the docking pipe 51, and the detection piece 53 is fixedly installed at the center of the docking pipe 51 The first propulsion end 52 and the second propulsion end 512 are respectively located on both sides of the detection piece 53, and the first propulsion end 52 is rotatably connected to the propulsion rod 510, one end of the propulsion rod 510 is rotatably connected to the second connecting bracket 55, and the first connecting bracket 54 is fixedly connected to both sides of the second connecting bracket 55, and the first connecting bracket 54 and the second connecting bracket 55 are in a straight line. A transmission rod 11 is rotatably installed on the top of the support plate 6, and one end of the transmission rod 11 is fixedly connected to one side of one of the first connecting brackets 54, and the other end of the transmission rod 11 is fixedly connected to a belt transmission assembly 10, and the other end of the belt transmission assembly 10 is fixedly connected to a power assembly 8, which is fixedly installed inside the feed pipe 3. An opening is opened inside the first propulsion end 52, and a limit block 511 is fixedly installed on the inner wall of the opening, and one end of the propulsion rod 510 is rotatably connected to the outer wall of the limit block 511.

[0033] In this embodiment, the outer shell 1 is mainly used to determine the position of the entire device. The mounting connecting plate 4 on the outer wall of the outer shell 1 is used to connect with other components to ensure the stability of the device itself. The two ends of the outer shell 1 are sealed by the cover plate 2. The detection component 5 is installed inside the outer shell 1 to avoid contact with the external environment. When in use, this device is deployed in the middle section or near the tail end of the extruder, so that the feed pipe 3 and the discharge pipe 14 are connected to the internal space of the extruder. During the operation of the extruder, a part of the acrylic will be pushed from the feed pipe 3 into the docking pipe 51;

[0034] When the acrylic moves, it drives the power assembly 8 to operate. The power assembly 8 drives the transmission rod 11 to rotate through the belt transmission assembly 10. The first connecting bracket 54 is fixedly connected to the other end of the transmission rod 11. Figure 3 and Figure 4For example, when the transmission rod 11 rotates, the first connecting bracket 54 will rotate synchronously, and the rotation direction is the same as that of the transmission rod 11. The second connecting bracket 55 is connected to the first connecting bracket 54 and will also rotate accordingly, and the rotation direction is the same as that of the transmission rod 11. The first connecting bracket 54 and the second connecting bracket 55 are both rotatably mounted above the support plate 6 to determine their own positions;

[0035] The push rod 510 is installed at one end of the second connecting bracket 55. As the second connecting bracket 55 rotates, the push rod 510 pushes the first push end 52 into the docking pipe 51 to complete the extrusion of the material. The push rod 510 is connected to the limit block 511 in the first push end 52. The existence of the opening provides sufficient activity space for the rotation of the push rod 510.

[0036] Pressure sensors are installed inside the first propulsion end 52, the second propulsion end 512 and the detection sheet 53. When the propulsion rod 510 pushes the first propulsion end 52 to move, the viscosity of the acrylic can be measured by measuring the resistance encountered by the first propulsion end 52. In addition, as the first propulsion end 52 is pushed, the acrylic passes through the detection sheet 53. The overall drag reduction effect is calculated by measuring the friction between the acrylic and the detection sheet 53 when the acrylic passes through the detection sheet 53, thereby measuring the viscosity and drag reduction effect of the acrylic at the same time.

[0037] The one-way valves in the feed pipe 3 and the discharge pipe 14 can prevent the acrylic from flowing back, and the acrylic detected by the detection piece 53 will eventually flow back into the extruder from the discharge pipe 14.

[0038] Embodiment 2: According to Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6As shown, the first propulsion end 52 is rotatably connected to a propulsion rod 510, one end of the propulsion rod 510 is rotatably connected to a second connecting bracket 55, both sides of the second connecting bracket 55 are fixedly connected to the first connecting bracket 54, the first connecting bracket 54 and the second connecting bracket 55 are in a straight line, and a transmission rod 11 is rotatably installed on the top of the support plate 6, one end of the transmission rod 11 is fixedly connected to one side of one of the first connecting brackets 54, the other end of the transmission rod 11 is fixedly connected to a belt transmission assembly 10, and the other end of the belt transmission assembly 10 is fixedly connected to a power assembly 8, which is fixedly installed inside the feed pipe 3, and the second connecting bracket 55 is rotatably installed. Installed on the top of the support plate 6, the second connecting bracket 55 and the first connecting bracket 54 are rotatably connected with a connecting rod 58 at the intersection, the connecting rod 58 is located on both sides of the docking pipe 51, and the other end of the connecting rod 58 is rotatably connected with a T-shaped rod 57, and the connecting rod 58 is located at both ends of the short rod of the T-shaped rod 57. One side of the T-shaped rod 57 is fixedly connected with a horizontal rod 59, and the other end of the horizontal rod 59 is fixedly connected to the inside of the second propulsion end 512. Extension brackets 12 are fixedly installed on both sides of the support plate 6, and a vertical rod 13 is fixedly installed on the upper surface of the extension bracket 12. One end of the long rod of the T-shaped rod 57 is fixedly connected with a positioning rod 56, and the positioning rod 56 is slidably connected to the inside of the vertical rod 13.

[0039] In this embodiment, the propulsion rod 510 is rotatably connected to the first propulsion end 52, and the horizontal rod 59 is fixedly connected to the second propulsion end 512. When the first connecting bracket 54 rotates, the connecting rod 58 will drive the T-shaped rod 57 to move together. Figure 4 and Figure 5 It can be seen that no matter which direction the first connecting bracket 54 rotates, the T-shaped rod 57 will move toward the inside of the docking pipe 51, thereby pushing the second propulsion end 512 to move. At the same time, the first propulsion end 52 will also move toward the inside of the docking pipe 51 to squeeze the acrylic together.

[0040] During the movement of the T-shaped rod 57, the positioning rod 56 will slide inside the vertical rod 13 to ensure that the T-shaped rod 57 moves on the horizontal plane to avoid the problem of wrong direction. The vertical rod 13 is fixedly mounted on the extension bracket 12, and the extension bracket 12 is connected to the support plate 6 to ensure the stability of the overall structure.

[0041] Embodiment 3: According to Figure 2 , Figure 6 , Figure 7 and Figure 8As shown, the power assembly 8 includes a fixed outer tube 81 and an impeller 82, the inner wall of the impeller 82 is fixedly connected with a power shaft 84, the power shaft 84 and the axis of the feed pipe 3 are located on the same straight line, both ends of the power shaft 84 are rotatably connected to the inner wall of the fixed outer tube 81, the fixed outer tube 81 is fixedly installed on the inner wall of the feed pipe 3, a protective shell 85 is fixedly connected to the inner wall of the fixed outer tube 81, one side of the protective shell 85 is rotatably connected with a transmission shaft 83, the transmission shaft 83 penetrates the protective shell 85, the transmission shaft 83 penetrates the fixed outer tube 81 and the feed pipe 3, and the feed pipe 3 is connected to the fixed outer tube 81. A positioning cylinder 7 is fixedly installed at the junction of the material pipeline 3 and the transmission shaft 83, and the transmission shaft 83 is located inside the positioning cylinder 7. A first bevel gear 86 is fixedly installed on the outer wall of the power shaft 84, and a second bevel gear 87 is fixedly installed at one end of the transmission shaft 83. The second bevel gear 87 is meshingly connected with the first bevel gear 86. The first bevel gear 86 and the second bevel gear 87 are both located inside the positioning cylinder 7. A docking end 9 is welded to the other end of the transmission shaft 83, and the docking end 9 is fixedly connected to another pulley in the belt transmission assembly 10.

[0042] In this embodiment, the power assembly 8 is installed inside the feed pipe 3, and the outer wall of the fixed outer tube 81 is connected to the inner wall of the feed pipe 3 to ensure the stability of its own structure. When the acrylic passes through the power assembly 8, it pushes the impeller 82 to rotate, and the rotation of the impeller 82 drives the power shaft 84 to rotate. The two ends of the power shaft 84 are connected to the fixed outer tube 81 and can rotate. During the rotation process, the power shaft 84 drives the first bevel gear 86;

[0043] The first bevel gear 86 is meshedly connected with the second bevel gear 87, and the second bevel gear 87 is installed inside the fixed outer tube 81, the protective shell 85 and the positioning cylinder 7. When the first bevel gear 86 drives the second bevel gear 87 to rotate, it will also drive the transmission shaft 83. The transmission shaft 83 drives the belt drive assembly 10 to operate through the docking terminal 9 at the end, providing a power source for the detection assembly 5. The positioning cylinder 7 is mainly used to protect the first bevel gear 86 and the second bevel gear 87.

[0044] The use method and working principle of the device: When in use, the feed pipe 3 is connected to the inside of the extruder. When the extruder extrudes acrylic, a part of the acrylic will be squeezed from the feed pipe 3 into the docking pipe 51. When the acrylic moves in the feed pipe 3, it will push the impeller 82 to rotate. When the impeller 82 rotates, it will drive the power shaft 84 to rotate. At this time, the first bevel gear 86 installed on the power shaft 84 will drive the second bevel gear 87 to rotate. The second bevel gear 87 drives the belt drive assembly 10 to operate through the docking end 9 at the end of the transmission shaft 83;

[0045] The belt drive assembly 10 drives the first connecting bracket 54 to rotate through the transmission rod 11, and the second connecting bracket 55 and the first connecting bracket 54 rotate in the same rotation direction of the transmission rod 11. During the rotation of the second connecting bracket 55, the propulsion rod 510 is pushed into the interior of the docking pipe 51, so that the first propulsion end 52 squeezes the acrylic inside the docking pipe 51.

[0046] During the rotation of the first connecting bracket 54 and the second connecting bracket 55, the connecting rod 58 drives the T-shaped rod 57 to move together. During the rotation of the first connecting bracket 54, no matter which direction it rotates, the T-shaped rod 57 will move toward the inside of the docking pipe 51, so as to achieve the purpose of pushing the second propulsion end 512 to move.

[0047] The viscosity of the acrylic is measured by calculating the resistance encountered by the first propulsion end 52 and the second propulsion end 512. As the first propulsion end 52 and the second propulsion end 512 move, the acrylic is continuously pushed through the detection piece 53. The overall drag reduction effect is calculated by measuring the data of the acrylic passing through the detection piece 53, thereby realizing the functions of measuring the viscosity of the acrylic and the drag reduction effect at the same time. Finally, the acrylic detected by the detection piece 53 will flow back into the interior of the extruder from the discharge pipe 14.

[0048] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An acrylic extrusion molding online viscosity monitoring device, characterized in that: The invention comprises an outer shell (1), a cover plate (2), a feed pipe (3), a detection component (5) and a discharge pipe (14), wherein a plurality of mounting connection plates (4) are welded on the outer wall of the outer shell (1), the outer shell (1) is used to accommodate the detection component (5), the mounting connection plates (4) are used to be mounted on the inner wall or the outer wall of the extruder, the cover plate (2) is movably mounted on both ends of the outer shell (1), the bottom of the outer shell (1) is fixedly connected to a support plate (6), one end of the detection component (5) is rotatably connected to the top of the support plate (6), one end of the feed pipe (3) is fixedly connected to the inside of the detection component (5), one end of the discharge pipe (14) is fixedly connected to the inside of the detection component (5), and one-way valves are fixedly mounted inside the feed pipe (3) and the discharge pipe (14); The detection assembly (5) comprises a docking pipe (51), a first propulsion end (52), a detection sheet (53) and a second propulsion end (512); the first propulsion end (52) is slidably connected to one end of the docking pipe (51); the second propulsion end (512) is slidably connected to the other end of the docking pipe (51); the detection sheet (53) is fixedly mounted at the center of the docking pipe (51); and the first propulsion end (52) and the second propulsion end (512) are respectively located on two sides of the detection sheet (53); A propulsion rod (510) is rotatably connected inside the first propulsion end (52), one end of the propulsion rod (510) is rotatably connected to a second connection bracket (55), both sides of the second connection bracket (55) are fixedly connected to the first connection bracket (54), the first connection bracket (54) and the second connection bracket (55) are in a straight line, a transmission rod (11) is rotatably mounted on the top of the support plate (6), one end of the transmission rod (11) is fixedly connected to one side of one of the first connection brackets (54), the other end of the transmission rod (11) is fixedly connected to a belt transmission assembly (10), the other end of the belt transmission assembly (10) is fixedly connected to a power assembly (8), and the power assembly (8) is fixedly mounted inside the feed pipe (3).

2. The acrylic extrusion molding online viscosity monitoring device according to claim 1, characterized in that: The second connecting bracket (55) is rotatably mounted on the top of the support plate (6), and a connecting rod (58) is rotatably connected to the intersection of the second connecting bracket (55) and the first connecting bracket (54), and the connecting rod (58) is located on both sides of the docking pipe (51).

3. The acrylic extrusion molding online viscosity monitoring device according to claim 2, characterized in that: The other end of the connecting rod (58) is rotatably connected to a T-shaped rod (57), the connecting rod (58) is located at both ends of the short rod of the T-shaped rod (57), one side of the T-shaped rod (57) is fixedly connected to a horizontal rod (59), and the other end of the horizontal rod (59) is fixedly connected to the inside of the second propulsion end (512).

4. The acrylic extrusion molding online viscosity monitoring device according to claim 3, characterized in that: An extension bracket (12) is fixedly mounted on both sides of the support plate (6), a vertical rod (13) is fixedly mounted on the upper surface of the extension bracket (12), and a positioning rod (56) is fixedly connected to one end of the long rod of the T-shaped rod (57), and the positioning rod (56) is slidably connected to the inside of the vertical rod (13).

5. The acrylic extrusion molding online viscosity monitoring device according to claim 1, characterized in that: An opening is provided inside the first propulsion end (52), and a limit block (511) is fixedly mounted on the inner wall of the opening. One end of the propulsion rod (510) is rotatably connected to the outer wall of the limit block (511).

6. The acrylic extrusion molding online viscosity monitoring device according to claim 1, characterized in that: The power assembly (8) comprises a fixed outer tube (81) and an impeller (82); a power shaft (84) is fixedly connected to the inner wall of the impeller (82); the power shaft (84) and the axis of the feed pipe (3) are located on the same straight line; both ends of the power shaft (84) are rotatably connected to the inner wall of the fixed outer tube (81); and the fixed outer tube (81) is fixedly mounted on the inner wall of the feed pipe (3).

7. The acrylic extrusion molding online viscosity monitoring device according to claim 6, characterized in that: A protective shell (85) is fixedly connected to the inner wall of the fixed outer tube (81), and a transmission shaft (83) is rotatably connected to one side of the protective shell (85), and the transmission shaft (83) passes through the protective shell (85).

8. The acrylic extrusion molding online viscosity monitoring device according to claim 7, characterized in that: The transmission shaft (83) passes through the fixed outer tube (81) and the feed pipe (3); a positioning cylinder (7) is fixedly mounted at the intersection of the feed pipe (3) and the transmission shaft (83); and the transmission shaft (83) is located inside the positioning cylinder (7).

9. The acrylic extrusion molding online viscosity monitoring device according to claim 8, characterized in that: A first bevel gear (86) is fixedly mounted on the outer wall of the power shaft (84), and a second bevel gear (87) is fixedly mounted on one end of the transmission shaft (83), wherein the second bevel gear (87) is meshingly connected to the first bevel gear (86).

10. The acrylic extrusion molding online viscosity monitoring device according to claim 9, characterized in that: The first bevel gear (86) and the second bevel gear (87) are both located inside the positioning cylinder (7); a butt end (9) is welded to the other end of the transmission shaft (83); and the butt end (9) is fixedly connected to another pulley in the belt transmission assembly (10).

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