An automatic material changing device for masterbatch feeding machine

Abstract

The present invention discloses an automatic material changing device for a masterbatch feeder, and relates to the technical field of masterbatch feeders, including a conveying cylinder, the inner wall of which is rotatably connected to a spiral conveying rod, and an automatic material changing mechanism, wherein the automatic material changing mechanism includes a hopper fixedly connected to the upper end of the conveying cylinder through a bracket, a plurality of storage boxes fixedly connected to the upper end of the hopper, the hopper is connected to the conveying cylinder through a feeding pipe, a feeding port is provided at the lower end of the storage box, a baffle is sealingly and slidably connected to the inner wall of the feeding port, an electric push rod is fixedly connected to the side wall of the storage box, and the movable end of the electric push rod penetrates the side wall of the storage box and is fixedly connected to the baffle. In the present invention, masterbatches of different colors are added to different storage boxes respectively, and then the corresponding electric push rods are started and the baffle is opened, so that the masterbatches of the corresponding colors can be added to the hopper, and then transported through the conveying cylinder, without manual addition, and it is simpler to use.

Description

Technical Field

[0001] The invention relates to the technical field of masterbatch feeders, in particular to an automatic material changing device for a masterbatch feeder. Background Art

[0002] Masterbatch is a new type of colorant specially used for polymer materials, mainly used in plastics. Masterbatch is composed of three basic elements: pigment or dye, carrier and additive. It is an aggregate made by uniformly loading an extraordinary amount of pigment into the resin, which can be called pigment concentrate, so its tinting power is higher than the pigment itself.

[0003] When the existing masterbatch feeder is feeding, when it is necessary to add masterbatch of different colors, the masterbatch of different colors is usually added into the upper hopper manually, which is time-consuming and labor-intensive. In addition, when adding manually, it can only be added in sequence, one color is added before another color, so that the masterbatches of different colors cannot be mixed evenly, which will affect the uniformity of the masterbatch during subsequent feeding, and then cause uneven coloring, affecting the appearance of the product.

[0004] Based on this, we propose an automatic material changing device for masterbatch feeder. Summary of the invention

[0005] The purpose of the present invention is to solve the shortcomings of the prior art and to propose an automatic material changing device for a masterbatch feeder.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] An automatic material changing device for a masterbatch feeder comprises a conveying cylinder, the inner wall of which is rotatably connected to a spiral conveying rod, and further comprises:

[0008] An automatic material changing mechanism, the automatic material changing mechanism comprises a hopper fixedly connected to the upper end of the conveying cylinder through a bracket, a plurality of storage boxes are fixedly connected to the upper end of the hopper, the hopper is connected to the conveying cylinder through a feeding pipe, a feeding port is opened at the lower end of the storage box, a baffle is sealingly and slidably connected to the inner wall of the feeding port, an electric push rod is fixedly connected to the side wall of the storage box, and the movable end of the electric push rod penetrates the side wall of the storage box and is fixedly connected to the baffle;

[0009] The stirring mechanism comprises a hollow rotating rod rotatably connected to the inner wall of the upper hopper, and a plurality of stirring rods are fixedly connected to the side wall of the hollow rotating rod.

[0010] Preferably, a driving mechanism is installed on the conveying cylinder, and the driving mechanism includes a motor fixedly connected to the side wall of the conveying cylinder through a bracket, the output end of the motor passes through the side wall of the conveying cylinder and is fixedly connected to the spiral conveying rod, the side wall of the motor output end is fixedly connected to a first driving wheel, both ends of the hollow rotating rod are arranged through the side wall of the upper hopper, the side wall of the hollow rotating rod is rotatably connected to a first driven wheel, and the first driving wheel and the first driven wheel are connected by a synchronous belt.

[0011] Preferably, a control mechanism is installed on the hollow rotating rod, and the control mechanism includes two slide grooves symmetrically opened on the side wall of the hollow rotating rod, and the ends of the two slide grooves close to each other are connected to the inside of the hollow rotating rod, the inner walls of the two slide grooves are sealed and slidably connected with slides, the side walls of the slides are fixedly connected to the limiting rod, and the inner wall of the first driven wheel is provided with a plurality of limiting grooves cooperating with the limiting rod, and the side walls of the plurality of storage boxes are fixedly connected to the control box, one end of the baffle passes through the side wall of the storage box and is sealed and slidably connected to the inner wall of the control box, the side wall of the upper hopper is fixedly connected with a rotating joint through a bracket, one end of the hollow rotating rod is fixedly connected to the rotating joint, and the other end of the rotating joint is fixedly connected to a branch pipe, and the other end of the branch pipe is respectively connected to a plurality of control boxes.

[0012] Preferably, a plurality of baffle plates are fixedly connected to the inner wall of the upper hopper, the plurality of baffle plates are all inclined, and the plurality of baffle plates have different lengths.

[0013] Preferably, a buffer mechanism is installed in the upper hopper, and the buffer mechanism includes two T-shaped rods symmetrically and slidably connected to the side wall of the upper hopper, and the ends of the two T-shaped rods close to each other are commonly fixedly connected to a buffer plate, and the side wall of the T-shaped rod is sleeved with a spring, and the two ends of the spring are respectively fixedly connected to the side wall of the buffer plate and the inner wall of the upper hopper.

[0014] Preferably, the buffer mechanism also includes a horizontal plate fixedly connected to the side wall of the upper hopper, the lower end of the horizontal plate is rotatably connected to the first rotating shaft, the lower end of the first rotating shaft is fixedly connected to a cam, the side wall of the cam slides against the side wall of the T-shaped rod, the upper end of the first rotating shaft passes through the upper end of the horizontal plate and is fixedly connected to the first bevel gear, the upper end of the conveying cylinder is fixedly connected to the vertical plate, the side wall of the vertical plate is rotatably connected to the second rotating shaft, one end of the second rotating shaft is fixedly connected to the second bevel gear, the first bevel gear is meshed with the second bevel gear, one end of the spiral conveying rod passes through the side wall of the conveying cylinder and is fixedly connected to the second driving wheel, one end of the second rotating shaft passes through the side wall of the vertical plate and is fixedly connected to the second driven wheel, and the second driving wheel and the second driven wheel are connected by a synchronous belt.

[0015] Preferably, a dust removal mechanism is installed on the buffer plate, and the dust removal mechanism includes a dust extraction chamber opened in the buffer plate, and a plurality of dust suction holes are opened on the inner wall of the dust extraction chamber, and an annular airbag is provided on the side wall of the T-shaped rod, and the two ends of the annular airbag are respectively fixedly connected to the upper hopper and the side wall of the T-shaped rod, and the side wall of the annular airbag is fixedly connected with a one-way dust exhaust pipe, and the annular airbag is connected with the dust extraction chamber through the one-way dust suction pipe.

[0016] Preferably, two support columns are fixedly connected to the lower end of the conveying cylinder, and a discharge pipe is fixedly connected to the lower end of the conveying cylinder.

[0017] The present invention has the following beneficial effects:

[0018] 1. By setting up an automatic material changing mechanism, add masterbatches of different colors into different storage boxes respectively, and then start the corresponding electric push rod to open the baffle, so that the masterbatches of the corresponding colors can be added into the upper hopper, and then transported through the conveying cylinder. No manual addition is required, which makes it easier and more convenient to use;

[0019] 2. By setting a stirring mechanism, a driving mechanism and a control mechanism, when it is necessary to feed masterbatches of multiple colors, it is only necessary to start the corresponding electric push rod to open the baffle, and then the masterbatches in multiple storage boxes will be fed into the upper hopper. When the baffle slides, the air in the control box will be squeezed into the hollow rotating rod through the branch pipe and the rotary joint, and finally the air will enter the chute, push the slide plate to move, and drive the limit rod to move. When two baffles are opened, the amount of air pumped into the chute is enough to push the limit rod into the limit groove, and then the motor drives the first driving wheel to rotate, which will drive the first driven wheel to rotate, and then drive the hollow rotating rod to rotate, drive multiple stirring rods to rotate, and stir the masterbatches of different colors to make them evenly mixed;

[0020] 3. When feeding a single color masterbatch, the hollow rotating rod will not rotate and there is no need to stir it, which can reduce the load of the motor and thus increase the service life of the motor;

[0021] 4. By setting the baffle plate, when the masterbatch in the storage box on both sides falls, the masterbatch will fall onto the baffle plate, and slowly gather to the middle of the upper hopper through the baffle plate, so that it can be stirred by the stirring rod;

[0022] 5. By setting a buffer mechanism, the rotation of the spiral conveying rod will drive the second driving wheel to rotate, drive the second driven wheel to rotate, and then drive the second rotating shaft to rotate, drive the second bevel gear to rotate, drive the first bevel gear to rotate, drive the first rotating shaft to rotate, and then drive the cam to rotate, repeatedly squeeze the T-shaped rod, and under the action of the spring, the T-shaped rod will slide back and forth horizontally, and then drive the buffer plate to move back and forth horizontally quickly, shake the masterbatch, make it evenly distributed on the buffer plate, and gradually fall from the buffer plate. The buffer plate can slow down the speed of the masterbatch falling and disperse it, so as not to cause the clogging of the feeding pipe;

[0023] 6. When feeding multi-color masterbatches, the multi-color masterbatches fall onto the buffer plate, which can keep them for a period of time, thereby increasing the stirring time of the masterbatches and making them mixed more fully. The shaking of the buffer plate can also increase the mixing effect of the masterbatches.

[0024] 7. By setting up a dust removal mechanism, the T-shaped rod will repeatedly squeeze the annular airbag when it slides back and forth horizontally, and then the annular airbag will generate suction force, and then the dust adhering to the masterbatch will be sucked into the dust extraction chamber through the dust suction hole, and then the dust will enter the annular airbag through the one-way dust suction pipe, and finally the dust will be discharged into the external dust collection device through the one-way dust exhaust pipe, so that the masterbatch can be cleaned to prevent the dust adhering to the masterbatch from affecting the quality of the subsequent molded products. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a schematic diagram of the three-dimensional structure of an automatic material changing device for a masterbatch feeder proposed by the present invention;

[0026] Figure 2 for Figure 1 A schematic side view of the structure in FIG.

[0027] Figure 3 for Figure 1 A schematic cross-sectional view of the structure;

[0028] Figure 4 for Figure 1 A schematic cross-sectional view of the storage box and the control box;

[0029] Figure 5 for Figure 3 A schematic diagram of the structure enlargement at point A;

[0030] Figure 6 for Figure 3 A schematic diagram of the structure at B in FIG.

[0031] Figure 7 for Figure 3 A schematic diagram of the structure at position C in FIG.

[0032] Figure 8 for Figure 3 A schematic diagram of the structure at D in FIG.

[0033] Fig. 9 for Figure 3 Schematic diagram of the cross-sectional structure of the middle and upper hopper and storage box.

[0034] In the figure: 1. conveying cylinder; 2. spiral conveying rod; 3. loading hopper; 4. storage box; 5. loading pipe; 6. loading port; 7. baffle plate; 8. electric push rod; 9. rotary joint; 10. hollow rotating rod; 11. stirring rod; 12. baffle plate; 13. cam; 14. motor; 15. first driving wheel; 16. first driven wheel; 17. slideway; 18. slide plate; 19. limit rod; 20. limit groove; 21. control box; 22. Branch pipe; 23. Buffer plate; 24. T-bar; 25. Spring; 26. Horizontal plate; 27. First rotating shaft; 28. First bevel gear; 29. ​​Vertical plate; 30. Second rotating shaft; 31. Second bevel gear; 32. Second driving wheel; 33. Second driven wheel; 34. Dust extraction chamber; 35. Dust suction hole; 36. Annular airbag; 37. One-way dust exhaust pipe; 38. One-way dust suction pipe; 39. Support column; 40. Discharge pipe. DETAILED DESCRIPTION

[0035] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present invention, so the present invention is not limited by the specific implementation disclosed below.

[0036] Reference Figure 1-Figure 9 , an automatic material changing device for a masterbatch feeder, comprising a conveying cylinder 1, the inner wall of which is rotatably connected to a spiral conveying rod 2, and further comprising:

[0037] Automatic material changing mechanism, the automatic material changing mechanism includes a hopper 3 fixedly connected to the upper end of the conveying cylinder 1 through a bracket, a plurality of storage boxes 4 are fixedly connected to the upper end of the hopper 3, the hopper 3 is connected to the conveying cylinder 1 through a feeding pipe 5, a feeding port 6 is opened at the lower end of the storage box 4, a baffle 7 is sealingly and slidably connected to the inner wall of the feeding port 6, an electric push rod 8 is fixedly connected to the side wall of the storage box 4, and the movable end of the electric push rod 8 passes through the side wall of the storage box 4 and is fixedly connected to the baffle 7;

[0038] Furthermore, masterbatches of different colors are added into different storage boxes 4 respectively, and then the corresponding electric push rods 8 are started and the baffle 7 is opened, so that the masterbatches of the corresponding colors can be added into the upper hopper 3 and then transported through the conveying cylinder 1. No manual addition is required, and it is simpler and more convenient to use.

[0039] The stirring mechanism comprises a hollow rotating rod 10 rotatably connected to the inner wall of the upper hopper 3 , and a plurality of stirring rods 11 are fixedly connected to the side wall of the hollow rotating rod 10 .

[0040] A driving mechanism is installed on the conveying cylinder 1, and the driving mechanism includes a motor 14 fixedly connected to the side wall of the conveying cylinder 1 through a bracket. The output end of the motor 14 penetrates the side wall of the conveying cylinder 1 and is fixedly connected to the spiral conveying rod 2. The side wall of the output end of the motor 14 is fixedly connected to a first driving wheel 15. Both ends of the hollow rotating rod 10 penetrate the side wall of the upper hopper 3. The side wall of the hollow rotating rod 10 is rotatably connected to a first driven wheel 16. The first driving wheel 15 and the first driven wheel 16 are connected by a synchronous belt.

[0041] A control mechanism is installed on the hollow rotating rod 10, and the control mechanism includes two slide grooves 17 symmetrically opened on the side wall of the hollow rotating rod 10, and the ends of the two slide grooves 17 close to each other are connected to the inside of the hollow rotating rod 10, and the inner walls of the two slide grooves 17 are sealed and slidably connected with slide plates 18, and the side walls of the slide plates 18 are fixedly connected to the limit rods 19. The inner wall of the first driven wheel 16 is provided with a plurality of limit grooves 20 that cooperate with the limit rods 19, and the side walls of the plurality of storage boxes 4 are fixedly connected to the control box 21, and one end of the baffle 7 penetrates the side wall of the storage box 4 and is sealed and slidably connected to the inner wall of the control box 21. The side wall of the upper hopper 3 is fixedly connected to the rotary joint 9 through a bracket, and one end of the hollow rotating rod 10 is fixedly connected to the rotary joint 9 (such as Figure 6 As shown), the other end of the rotary joint 9 is fixedly connected to a branch pipe 22, and the other ends of the branch pipe 22 are respectively connected to multiple control boxes 21.

[0042] Furthermore, when feeding a single color masterbatch, it is only necessary to energize the electric push rod 8 on the corresponding storage box 4 to extend it, drive the baffle 7 to slide, and no longer block the loading port 6, and then the masterbatch in the storage box 4 will fall into the loading hopper 3 through the loading port 6. When it is necessary to feed multiple color masterbatch, it is only necessary to start the corresponding electric push rod 8 to open the baffle 7, and then the masterbatch in multiple storage boxes 4 will enter the loading hopper 3. When the baffle 7 slides, the air in the control box 21 will be squeezed into the hollow rotating rod 10 through the branch pipe 22 and the rotating joint 9, and finally the air will enter the slide 17, push the slide plate 18 to move, and drive the limit rod 19 to move. When two baffles 7 are opened, the amount of air pumped into the chute 17 is sufficient to push the limiting rod 19 into the limiting groove 20, and then the motor 14 drives the first driving wheel 15 to rotate, which will drive the first driven wheel 16 to rotate, and then drive the hollow rotating rod 10 to rotate, drive the multiple stirring rods 11 to rotate, and stir the masterbatches of different colors to make them evenly mixed. When a single masterbatch is fed, only one baffle 7 is opened. At this time, the amount of air pumped into the chute 17 cannot make the limiting rod 19 enter the limiting groove 20. When all the baffles 7 are fully opened, the amount of air pumped into the chute 17 can make the limiting rod 19 completely enter the limiting groove 20.

[0043] It is worth mentioning that when feeding a single color masterbatch, the hollow rotating rod 10 will not rotate and there is no need to stir it, which can reduce the load of the motor 14 and thus increase the service life of the motor 14.

[0044] A plurality of baffle plates 12 are fixedly connected to the inner wall of the upper hopper 3. The plurality of baffle plates 12 are all inclined and have different lengths, increasing in length from top to bottom. When the masterbatch in the storage boxes 4 on both sides falls, the masterbatch will fall onto the baffle plates 12, and slowly gather to the middle of the upper hopper 3 through the baffle plates 12, so that it can be stirred by the stirring rod 11.

[0045] A buffer mechanism is installed in the upper hopper 3, and the buffer mechanism includes two T-shaped rods 24 symmetrically slidably connected to the side wall of the upper hopper 3, and the ends of the two T-shaped rods 24 close to each other are commonly fixedly connected to a buffer plate 23, and a spring 25 is sleeved on the side wall of the T-shaped rod 24, and the two ends of the spring 25 are respectively fixedly connected to the side wall of the buffer plate 23 and the inner wall of the upper hopper 3.

[0046] The buffer mechanism further includes a transverse plate 26 fixedly connected to the side wall of the upper hopper 3, and a first rotating shaft 27 (such as Figure 6As shown in the figure, the lower end of the first rotating shaft 27 is fixedly connected to the cam 13, and the side wall of the cam 13 slides against the side wall of the T-shaped rod 24. The upper end of the first rotating shaft 27 passes through the upper end of the horizontal plate 26 and is fixedly connected to the first bevel gear 28. The upper end of the conveying cylinder 1 is fixedly connected to the vertical plate 29, and the side wall of the vertical plate 29 is rotatably connected to the second rotating shaft 30. One end of the second rotating shaft 30 is fixedly connected to the second bevel gear 31. The first bevel gear 28 is meshed with the second bevel gear 31. One end of the spiral conveying rod 2 passes through the side wall of the conveying cylinder 1 and is fixedly connected to the second driving wheel 32. One end of the second rotating shaft 30 passes through the side wall of the vertical plate 29 and is fixedly connected to the second driven wheel 33. The second driving wheel 32 and the second driven wheel 33 are connected by a synchronous belt.

[0047] Furthermore, the rotation of the spiral conveying rod 2 will drive the second driving wheel 32 to rotate, drive the second driven wheel 33 to rotate, and then drive the second rotating shaft 30 to rotate, drive the second bevel gear 31 to rotate, drive the first bevel gear 28 to rotate, drive the first rotating shaft 27 to rotate, and then drive the cam 13 to rotate, repeatedly squeezing the T-shaped rod 24. Under the action of the spring 25, the T-shaped rod 24 will slide back and forth horizontally, and then drive the buffer plate 23 to move back and forth horizontally and quickly, shake the masterbatch, so that it is evenly distributed on the buffer plate 23, and gradually falls from the buffer plate 23. The buffer plate 23 can slow down the falling speed of the masterbatch and disperse it, so as not to cause blockage of the feeding pipe 5.

[0048] It is worth mentioning that when feeding multi-color masterbatches, the multi-color masterbatches fall onto the buffer plate 23, and the buffer plate 23 can make them stay for a period of time, thereby increasing the stirring time of the masterbatch and making it mixed more fully, and the shaking of the buffer plate 23 can also increase the mixing effect of the masterbatch.

[0049] A dust removal mechanism is installed on the buffer plate 23, and the dust removal mechanism includes a dust extraction chamber 34 opened in the buffer plate 23, and a plurality of dust suction holes 35 are opened on the inner wall of the dust extraction chamber 34, and an annular air bag 36 is sleeved on the side wall of the T-shaped rod 24, and the two ends of the annular air bag 36 are respectively fixedly connected to the upper hopper 3 and the side wall of the T-shaped rod 24, and a one-way dust exhaust pipe 37 is fixedly connected to the side wall of the annular air bag 36, and the other end of the one-way dust exhaust pipe 37 is connected to an external dust collection device, and the one-way dust exhaust pipe 37 only allows the dust in the annular air bag 36 to be discharged, and the annular air bag 36 is connected to the dust extraction chamber 34 through a one-way dust suction pipe 38, and the one-way dust suction pipe 38 only allows the dust in the dust extraction chamber 34 to enter the annular air bag 36.

[0050] Furthermore, when the T-shaped rod 24 slides reciprocatingly horizontally, it will repeatedly squeeze the annular airbag 36, and then the annular airbag 36 will generate a suction force, and then the dust adhered to the masterbatch will be sucked into the dust suction chamber 34 through the dust suction hole 35, and then the dust will enter the annular airbag 36 through the one-way dust suction pipe 38, and finally the dust will be discharged into the external dust collection device through the one-way dust exhaust pipe 37, so that the masterbatch can be cleaned to prevent the dust adhered to the masterbatch from affecting the quality of the subsequent molded products.

[0051] Two support columns 39 are fixedly connected to the lower end of the conveying cylinder 1 . The lower ends of the support columns 39 are fixedly connected to the ground via expansion screws. A discharge pipe 40 is fixedly connected to the lower end of the conveying cylinder 1 .

[0052] In the present invention, first, the masterbatches of different colors are added into different storage boxes 4 respectively, and then the motor 14 is started to drive the spiral conveying rod 2 to rotate. When feeding a single masterbatch, it is only necessary to energize the electric push rod 8 on the corresponding storage box 4 to extend it, drive the baffle 7 to slide, so that it no longer blocks the feeding port 6, and then the masterbatch in the storage box 4 will fall into the feeding hopper 3 through the feeding port 6, and then fall onto the buffer plate 23. The buffer plate 23 can provide a buffer for the masterbatch to fall, thereby preventing a large amount of masterbatch from falling into the feeding tube 5 and causing the feeding tube 5 to be blocked.

[0053] The rotation of the spiral conveying rod 2 will drive the second driving wheel 32 to rotate, drive the second driven wheel 33 to rotate, and then drive the second rotating shaft 30 to rotate, drive the second bevel gear 31 to rotate, drive the first bevel gear 28 to rotate, drive the first rotating shaft 27 to rotate, and then drive the cam 13 to rotate, repeatedly squeezing the T-shaped rod 24. Under the action of the spring 25, the T-shaped rod 24 will slide back and forth horizontally, and then drive the buffer plate 23 to move back and forth horizontally and quickly, shake the masterbatch, so that it is evenly distributed on the buffer plate 23, and gradually falls from the buffer plate 23, enters the conveying cylinder 1 through the feeding pipe 5, is transported by the spiral conveying rod 2, and finally is discharged through the discharge pipe 40 for feeding. The buffer plate 23 can slow down the falling speed of the masterbatch and disperse it, so as not to cause the clogging of the feeding pipe 5.

[0054] In addition, when the T-shaped rod 24 slides reciprocatingly horizontally, it will repeatedly squeeze the annular airbag 36, and then the annular airbag 36 will generate a suction force, and then the dust adhered to the masterbatch will be sucked into the dust suction chamber 34 through the dust suction hole 35, and then the dust will enter the annular airbag 36 through the one-way dust suction pipe 38, and finally the dust will be discharged into the external dust collection device through the one-way dust exhaust pipe 37, so that the masterbatch can be cleaned to prevent the dust adhered to the masterbatch from affecting the quality of the subsequent molded products.

[0055] When it is necessary to feed masterbatches of multiple colors, it is only necessary to start the corresponding electric push rod 8 to open the baffle 7, and then the masterbatches in the multiple storage boxes 4 will flow into the upper hopper 3. When the baffle 7 slides, the air in the control box 21 will be squeezed into the hollow rotating rod 10 through the branch pipe 22 and the rotary joint 9, and finally the air will enter the chute 17, pushing the slide plate 18 to move, driving the limit rod 19 to move. When two baffles 7 are opened, the amount of air pumped into the chute 17 is enough to push the limit rod 19 into the limit groove 20, and enter. At this time, the motor 14 drives the first driving wheel 15 to rotate, which will drive the first driven wheel 16 to rotate, and then drive the hollow rotating rod 10 to rotate, drive the multiple stirring rods 11 to rotate, and stir the masterbatches of different colors to make them evenly mixed. When a single masterbatch is fed, only one baffle 7 is opened. At this time, the amount of air pumped into the chute 17 cannot make the limit rod 19 enter the limit groove 20. When all the baffles 7 are fully opened, the amount of air pumped into the chute 17 can make the limit rod 19 completely enter the limit groove 20.

[0056] When the masterbatch in the storage box 4 on both sides falls, the masterbatch will fall onto the baffle plate 12, and slowly gather to the middle of the upper hopper 3 through the baffle plate 12, so that it can be stirred by the stirring rod 11, and when the masterbatch of various colors falls onto the buffer plate 23, the buffer plate 23 can make it stay for a period of time, thereby increasing the stirring time of the masterbatch and making it mixed more fully, and the shaking of the buffer plate 23 can also increase the mixing effect of the masterbatch.

[0057] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An automatic material changing device for a masterbatch feeder, comprising a conveying cylinder (1), wherein the inner wall of the conveying cylinder (1) is rotatably connected to a spiral conveying rod (2), characterized in that: Also includes: An automatic material changing mechanism, the automatic material changing mechanism comprising a loading hopper (3) fixedly connected to the upper end of a conveying cylinder (1) through a bracket, a plurality of material storage boxes (4) fixedly connected to the upper end of the loading hopper (3), the loading hopper (3) being connected to the conveying cylinder (1) through a loading pipe (5), a loading port (6) being provided at the lower end of the material storage box (4), a baffle (7) being sealingly and slidably connected to the inner wall of the loading port (6), an electric push rod (8) being fixedly connected to the side wall of the material storage box (4), a movable end of the electric push rod (8) penetrating the side wall of the material storage box (4) and being fixedly connected to the baffle (7); A stirring mechanism, the stirring mechanism comprising a hollow rotating rod (10) rotatably connected to the inner wall of the upper hopper (3), and a plurality of stirring rods (11) are fixedly connected to the side wall of the hollow rotating rod (10); The conveying cylinder (1) is provided with a driving mechanism, the driving mechanism comprising a motor (14) fixedly connected to the side wall of the conveying cylinder (1) via a bracket, the output end of the motor (14) passes through the side wall of the conveying cylinder (1) and is fixedly connected to the spiral conveying rod (2), the side wall of the output end of the motor (14) is fixedly connected to a first driving wheel (15), both ends of the hollow rotating rod (10) are arranged to pass through the side wall of the upper hopper (3), the side wall of the hollow rotating rod (10) is rotatably connected to a first driven wheel (16), and the first driving wheel (15) and the first driven wheel (16) are connected via a synchronous belt; The hollow rotating rod (10) is provided with a control mechanism, the control mechanism comprising two slide grooves (17) symmetrically arranged on the side wall of the hollow rotating rod (10), the ends of the two slide grooves (17) close to each other are both connected to the inside of the hollow rotating rod (10), the inner walls of the two slide grooves (17) are both sealed and slidably connected with a slide plate (18), the side wall of the slide plate (18) is fixedly connected with a limit rod (19), and the inner wall of the first driven wheel (16) is provided with a plurality of limit grooves (20) cooperating with the limit rod (19). ), the side walls of the plurality of material storage boxes (4) are all fixedly connected to a control box (21), one end of the baffle (7) penetrates the side wall of the material storage box (4) and is sealingly and slidably connected to the inner wall of the control box (21), the side wall of the upper hopper (3) is fixedly connected to a rotating joint (9) via a bracket, one end of the hollow rotating rod (10) is fixedly connected to the rotating joint (9), the other end of the rotating joint (9) is fixedly connected to a branch pipe (22), and the other end of the branch pipe (22) is respectively connected to the plurality of control boxes (21).

2. The automatic material changing device for a masterbatch feeder according to claim 1, characterized in that: in: A plurality of material baffle plates (12) are fixedly connected to the inner wall of the upper hopper (3); the plurality of material baffle plates (12) are all arranged at an inclination, and the plurality of material baffle plates (12) have different lengths.

3. The automatic material changing device for a masterbatch feeder according to claim 2 is characterized in that: in: A buffer mechanism is installed in the upper hopper (3), and the buffer mechanism comprises two T-shaped rods (24) symmetrically slidably connected to the side wall of the upper hopper (3), one end of the two T-shaped rods (24) close to each other is fixedly connected to a buffer plate (23), and the side wall of the T-shaped rod (24) is sleeved with a spring (25), and the two ends of the spring (25) are respectively fixedly connected to the side wall of the buffer plate (23) and the inner wall of the upper hopper (3).

4. The automatic material changing device for a masterbatch feeder according to claim 3 is characterized in that: in: The buffer mechanism further comprises a horizontal plate (26) fixedly connected to the side wall of the upper hopper (3); the lower end of the horizontal plate (26) is rotatably connected to a first rotating shaft (27); the lower end of the first rotating shaft (27) is fixedly connected to a cam (13); the side wall of the cam (13) and the side wall of the T-shaped rod (24) are slidably opposed to each other; the upper end of the first rotating shaft (27) passes through the upper end of the horizontal plate (26) and is fixedly connected to a first bevel gear (28); the upper end of the conveying cylinder (1) is fixedly connected to a vertical plate (29); the side wall of the vertical plate (29) A second rotating shaft (30) is rotatably connected, one end of the second rotating shaft (30) is fixedly connected to a second bevel gear (31), the first bevel gear (28) is meshingly connected to the second bevel gear (31), one end of the spiral conveying rod (2) passes through the side wall of the conveying cylinder (1) and is fixedly connected to a second driving wheel (32), one end of the second rotating shaft (30) passes through the side wall of the vertical plate (29) and is fixedly connected to a second driven wheel (33), and the second driving wheel (32) and the second driven wheel (33) are connected via a synchronous belt.

5. The automatic material changing device for a masterbatch feeder according to claim 4 is characterized in that: in: A dust removal mechanism is mounted on the buffer plate (23), the dust removal mechanism comprising a dust extraction chamber (34) provided in the buffer plate (23), a plurality of dust extraction holes (35) being provided on the inner wall of the dust extraction chamber (34), an annular air bag (36) being sleeved on the side wall of the T-shaped rod (24), two ends of the annular air bag (36) being respectively fixedly connected to the upper hopper (3) and the side wall of the T-shaped rod (24), a one-way dust exhaust pipe (37) being fixedly connected to the side wall of the annular air bag (36), and the annular air bag (36) being communicated with the dust extraction chamber (34) via the one-way dust extraction pipe (38).

6. The automatic material changing device for a masterbatch feeder according to claim 5, characterized in that: in: The lower end of the conveying cylinder (1) is fixedly connected to two support columns (39), and the lower end of the conveying cylinder (1) is fixedly connected to a discharge pipe (40).

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