Double-screw extruder for color master batch production

Abstract

The utility model relates to the technical field of color master batch production, in particular to a double-screw extruder for color master batch production. The utility model provides an anti-adhesion double-screw extruder for color master batch production. A double-screw extruder for color master batch production comprises a rack, a feeder, a motor, screws, a mounting plate, a first supporting frame, guide wheels, sliding rods and the like, the rack is fixedly connected with the feeder, the rack is fixedly connected with the motor, the rack is rotatably connected with the paired screws, the rack is slidably connected with the paired sliding rods, the mounting plate is fixedly connected between the paired sliding rods, and the first supporting frame is fixedly connected with the mounting plate. The mounting plate is fixedly connected with a plurality of groups of first support frames which are longitudinally distributed in pairs, and a guide wheel is rotationally connected between each pair of first support frames. According to the double-screw extruder for color master batch production, extruded color master batch columns can be guided through components such as the first supporting frame and the guide wheels, the situation that every two adjacent color master batch columns adhere to each other due to the small interval is avoided, and the product quality of the double-screw extruder for color master batch production is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of masterbatch production, in particular to a twin-screw extruder used for masterbatch production. Background Art

[0002] Masterbatch, also known as color seed, is a new type of colorant specifically designed for polymer materials, also known as a pigment preparation. Masterbatch is primarily used in plastics. Composed of three basic elements: pigment or dye, carrier, and additives, a masterbatch is a composite of a large amount of pigment uniformly loaded into a resin. This concentrate, also known as a pigment concentrate, offers greater tinting power than the pigment itself.

[0003] In the patent with publication number CN210679258U, a twin-screw extruder for the production of plastic masterbatch is disclosed, including a horizontally arranged extrusion box, a heating mechanism is fixedly installed on the outside of the extrusion box, two parallel screws are rotatably installed in the cavity, one end of the screw passes through the extrusion box and is transmission-connected to the power input mechanism, the extrusion box is provided with a blanking die and a feeding mechanism, the feeding mechanism includes a feed box, a first rotating shaft is horizontally arranged in the feed box, a blade is provided on the first rotating shaft, a transverse plate is provided on the side of the first rotating shaft close to the opening, a second rotating shaft is passed through the middle of the transverse plate, the second rotating shaft is arranged perpendicular to the first rotating shaft, one end of the second rotating shaft passes through the feed box and is coaxially connected to the knob, and a conical funnel is tilted on the side of the first rotating shaft away from the opening. This utility model has the advantages of stable discharge, safety, reliability and simple operation. However, the masterbatch is still soft and has a certain viscosity when it is just extruded. The spacing between the discharge holes of this twin-screw extruder for plastic masterbatch production is small and circumferentially distributed, which makes it easy for the masterbatch to stick together at the discharge port, resulting in the masterbatch being of different shapes and sizes, thereby reducing the quality of the product.

[0004] Based on the above situation, the utility model proposes an anti-adhesion twin-screw extruder for masterbatch production. Utility Model Content

[0005] In order to overcome the shortcomings of existing twin-screw extruders for masterbatch production, such as small spacing between discharge holes and circumferential distribution, which easily causes masterbatches to stick together at the discharge port, resulting in masterbatch shapes and sizes being uneven, thereby reducing product quality, the utility model provides an anti-sticking twin-screw extruder for masterbatch production.

[0006] A twin-screw extruder for masterbatch production includes a frame, a feeder, a motor, a screw, a mounting plate, a first support frame, a guide wheel, a slide bar and a spring. The frame is fixedly connected to the feeder, the frame is fixedly connected to the motor, the frame is rotatably connected to pairs of screws, the paired screws are fixedly connected to gears, and the paired gears are meshed with each other, the motor output end is fixedly connected to one of the screws, the frame is slidably connected to pairs of slide bars, springs are fixedly connected between the slide bars and the frame, a mounting plate is fixedly connected between the pairs of slide bars, the mounting plate is fixedly connected to multiple groups of paired longitudinally distributed first support frames, and each pair of first support frames is rotatably connected to a guide wheel.

[0007] More preferably, the threads of the two screws are completely opposite.

[0008] More preferably, a group of guide wheels in the middle of the mounting plate are tilted to a certain extent, so as to guide the masterbatch columns and avoid mutual adhesion.

[0009] More preferably, it further includes a fan, a buffer orifice plate and a second support frame, the fan is fixedly connected to the frame, the frame is fixedly connected to a pair of second support frames, and the buffer orifice plate is fixedly connected between the pairs of second support frames.

[0010] More preferably, it further includes a movable frame, a wiper plate, a push block, a top block and an electric slide rail, the frame is fixedly connected to a pair of electric slide rails, the electric slide rails are slidably connected to the movable frame, a wiper plate is fixedly connected between the paired movable frames, the wiper plate is slidably connected to the frame, the movable frame is fixedly connected to the push block, the mounting plate is fixedly connected to a pair of top blocks, and the push blocks are squeezed and fitted with adjacent top blocks.

[0011] More preferably, the push block is provided with an inclined surface.

[0012] Compared with the prior art, the present invention has the following advantages: 1. The present invention can guide the extruded masterbatch columns through the first support frame and the guide wheel and other components, thereby avoiding the situation where two adjacent masterbatch columns stick together due to a small interval, thereby making the particle sizes of the masterbatch after segmentation different, thereby improving the product quality of the twin-screw extruder used for masterbatch production.

[0013] 2. The utility model can accelerate the cooling and molding process of the masterbatch through components such as the fan and the buffer orifice plate, reduce the adhesion of the masterbatch when it softens, and at the same time, the buffer orifice plate can prevent the masterbatch column from being severely deformed under the action of wind, thereby improving the product quality of the twin-screw extruder used for masterbatch production.

[0014] 3. The utility model can remove the residual masterbatch at the discharge port of the frame through components such as electric slide rails and wipers, so as to prevent the residual masterbatch from solidifying at the discharge port and blocking the extrusion of subsequent masterbatch columns, thereby affecting the shape of the masterbatch columns and improving the product quality of the twin-screw extruder used for masterbatch production. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model.

[0016] Figure 2 This is a schematic diagram of the three-dimensional cross-sectional structure of the motor, screw, feeder and other components of the utility model.

[0017] Figure 3 It is a schematic three-dimensional cross-sectional structure diagram of the mounting plate, the first support frame, the guide wheel and other components of the utility model.

[0018] Figure 4 It is a partial three-dimensional cross-sectional structural diagram of the guide wheel, slide rod, spring and other components of the utility model.

[0019] Figure 5 It is a schematic diagram of the three-dimensional structure of the fan, buffer orifice plate, second support frame and other components of the utility model.

[0020] Figure 6 It is a partial three-dimensional structural diagram of the components such as the frame, buffer hole plate and second support frame of the utility model.

[0021] Figure 7 It is a three-dimensional cross-sectional structural diagram of the movable frame, wiping plate and pushing block of the utility model.

[0022] The meanings of the reference numerals in the figure are: 1. Frame, 11. Feeder, 12. Motor, 13. Screw, 2. Mounting plate, 21. First support frame, 22. Guide wheel, 23. Slide bar, 24. Spring, 3. Fan, 31. Buffer hole plate, 32. Second support frame, 4. Moving frame, 41. Wiping plate, 42. Push block, 43. Top block, 44. Electric slide rail. DETAILED DESCRIPTION

[0023] 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 embodiments 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 making creative efforts are within the scope of protection of the present invention.

[0024] Example 1

[0025] A twin-screw extruder for masterbatch production, such as Figures 1-4As shown, it includes a frame 1, a feeder 11, a motor 12, a screw 13, a mounting plate 2, a first support frame 21, a guide wheel 22, a slide bar 23 and a spring 24. The feeder 11 is fixedly connected to the left side of the top of the frame 1, and the motor 12 is fixedly connected to the left side of the frame 1. The front and rear sides of the frame 1 are rotatably connected, and the left sides of the two screws 13 are fixed with gears, and the two gears are engaged with each other. The output end of the motor 12 is fixedly connected to one of the screws 13. The front and rear parts of the right side of the frame 1 are slidably connected with slide bars 23. A spring 24 is fixed between the slide bars 23 and the frame 1. A mounting plate 2 is fixedly connected between the right ends of the two slide bars 23. Three groups of first support frames 21 distributed longitudinally in pairs front and back are fixedly connected to the top of the mounting plate 2, and a guide wheel 22 is rotatably connected between each pair of first support frames 21.

[0026] like Figure 2 As shown, the threads of the two screw rods 13 are completely opposite.

[0027] like Figure 4 As shown, a group of guide wheels 22 in the middle of the top of the mounting plate 2 are tilted left and right to guide the masterbatch columns to avoid mutual adhesion.

[0028] When workers need to make masterbatch and extrude it, they can first pour the raw materials into the frame 1 through the feeder 11, and then start the motor 12, and drive the two threaded rods to rotate at the same time through the gears. The rotation of the threaded rods can stir the raw materials and transport the masterbatch to the discharge port of the frame 1. The masterbatch is then extruded and formed into a column. At this time, multiple masterbatch columns will be guided by adjacent guide wheels 22 respectively, especially a group of guide wheels 22 distributed longitudinally in the middle have different degrees of left and right inclination. At this time, the masterbatch column continues to move to the right, and the guide wheel 22 also rotates, so as to move and guide the multiple masterbatch columns and separate them from each other, so as to avoid the masterbatch columns from sticking together due to their close spacing, and causing the masterbatch subsequently separated to have different particle sizes, thereby affecting the production quality of the masterbatch.

[0029] Example 2

[0030] On the basis of Example 1, Figure 5 and Figure 6 As shown, it also includes a fan 3, a buffer orifice plate 31 and a second support frame 32. The fan 3 is fixedly connected to the top right side of the rack 1, and the second support frames 32 are fixedly connected to the front and back parts of the right side of the rack 1. The buffer orifice plate 31 is fixedly connected between the two second support frames 32.

[0031] When the masterbatch is just extruded, it is still soft and has a certain stickiness. In order to prevent the masterbatch from sticking to each other or sticking to the guide wheel 22, the worker can start the fan 3 to cool the masterbatch, accelerate the cooling and molding process of the masterbatch, and reduce the adhesion of the masterbatch. The presence of the buffer orifice 31 can guide the airflow, and at the same time, it can also block and buffer the airflow to a certain extent, to prevent the masterbatch from moving downward and getting stuck between two adjacent guide wheels 22 or causing a large degree of deformation due to excessive wind force, thereby affecting the production quality of the masterbatch.

[0032] Example 3

[0033] On the basis of Example 2, Figure 7 As shown, it also includes a movable frame 4, a wiper plate 41, a push block 42, a top block 43 and an electric slide rail 44. The front and rear parts of the right side of the frame 1 are fixedly connected to the electric slide rail 44. The movable frame 4 is slidably connected inside the electric slide rail 44. A wiper plate 41 is fixed between the two movable frames 4. The wiper plate 41 is slidably connected to the frame 1. A push block 42 is fixed to the bottom of the movable frame 4. The front and rear sides of the mounting plate 2 are fixedly connected to the top block 43. The push block 42 is squeezed and fitted with the adjacent top block 43.

[0034] like Figure 7 As shown, the bottom of the push block 42 is provided with an inclined surface.

[0035] After the masterbatch is extruded, a small amount of masterbatch may remain near the discharge port of the frame 1. At this time, the worker can start the electric slide 44 to drive the movable frame 4, the wiping plate 41 and the pushing block 42 to move downward. At this time, the pushing block 42 will first contact and squeeze the top block 43, causing the top block 43, the mounting plate 2 and the guide wheel 22 and other components to move to the right. The spring 24 is then compressed to prevent the wiping plate 41 from colliding with the guide wheel 22 and causing damage when moving downward. Then the wiping plate 41 moves downward and cleans the discharge port of the frame 1 to prevent a small amount of masterbatch from solidifying at the discharge port and blocking the extrusion of subsequent masterbatch columns. After the cleaning is completed, the movable frame 4, the wiping plate 41 and the pushing block 42 are driven by the electric slide 44 to move upward and reset, and the top block 43, the mounting plate 2 and the guide wheel 22 and other components are moved to the left and reset under the action of the spring 24.

[0036] The above is a detailed introduction to the present application. Specific examples are used herein to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the method and core idea of ​​the present application. At the same time, for those skilled in the art, based on the idea of ​​the present application, there may be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as a limitation on the present application.

Claims

1. A twin-screw extruder for masterbatch production, comprising a frame (1), a feeder (11), a motor (12) and a screw (13), wherein the frame (1) is fixedly connected to the feeder (11), the frame (1) is fixedly connected to the motor (12), the frame (1) is rotatably connected to a pair of screws (13), the paired screws (13) are fixedly connected to gears, and the paired gears are meshed with each other, and the output end of the motor (12) is fixedly connected to one of the screws (13), wherein: The invention also includes a mounting plate (2), a first support frame (21), a guide wheel (22), a slide bar (23) and a spring (24); the frame (1) is slidably connected to a pair of slide bars (23); a spring (24) is fixed between the slide bars (23) and the frame (1); a mounting plate (2) is fixed between the pairs of slide bars (23); the mounting plate (2) is fixed to a plurality of pairs of longitudinally distributed first support frames (21); and a guide wheel (22) is rotatably connected between each pair of first support frames (21).

2. A twin-screw extruder for masterbatch production according to claim 1, characterized in that: Two of them The threads of the screw (13) are completely opposite.

3. A twin-screw extruder for masterbatch production according to claim 2, characterized in that: Mounting plate (2) A group of guide wheels (22) in the upper middle part are all tilted to a certain extent.

4. A twin-screw extruder for masterbatch production according to claim 3, characterized in that: The machine also includes a fan (3), a buffer orifice plate (31) and a second support frame (32); the fan (3) is fixedly connected to the frame (1); the frame (1) is fixedly connected to a pair of second support frames (32); and the buffer orifice plate (31) is fixedly connected between the pair of second support frames (32).

5. A twin-screw extruder for masterbatch production according to claim 4, characterized in that: The invention also comprises a movable frame (4), a wiping plate (41), a pushing block (42), a top block (43) and an electric slide rail (44); the frame (1) is fixedly connected with a pair of electric slide rails (44); the electric slide rails (44) are slidably connected with the movable frame (4); a wiping plate (41) is fixedly connected between the paired movable frames (4); the wiping plate (41) is slidably connected to the frame (1); the movable frame (4) is fixedly connected with a pushing block (42); the mounting plate (2) is fixedly connected with a pair of top blocks (43); the pushing block (42) is extruded and matched with the adjacent top block (43).

6. A twin-screw extruder for masterbatch production according to claim 5, characterized in that: The push block (42) is provided with an inclined surface.

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