Plastic additive production granulator

Abstract

The invention relates to the technical field of plastic additive production, and particularly discloses a plastic additive production granulator which comprises an extrusion half cylinder, a feeding frame is fixedly inserted into the rear end of the extrusion half cylinder, a motor is fixedly connected to the top of the extrusion half cylinder, an output shaft of the motor penetrates through the extrusion half cylinder to be fixedly connected with a screw rod, and a pore plate is fixedly connected to the inner wall of the extrusion half cylinder. And a cutting assembly is arranged below the pore plate and comprises a mounting frame fixedly connected to the bottoms of the two extrusion half cylinders, a passing frame is fixedly connected to the inner side, away from the mounting frame, of the mounting frame, and a passing hole is formed in the position, corresponding to the extrusion hole, of the surface of the upper end of the passing frame. When the cutting knife part slightly rotates and just passes through the passing hole at the position, the thin-strip-shaped materials at the position are cut, in this way, compared with the mode that cutting is conducted by rotating one circle, the situation that cutting is not uniform in the initial state can be reduced, the cutting uniformity is improved, and then the product quality is improved.

Description

Technical Field

[0001] The invention relates to the technical field of plastic additive production, in particular to a plastic additive production granulator. Background Art

[0002] Plastic additives, also known as plastic additives, are some compounds that must be added to improve the processing properties of polymers during molding or to improve the performance of the resin itself. The thermal decomposition temperature of some plastics is very close to the molding temperature, and they cannot be molded without the addition of heat stabilizers. Usually, plastic additives need to be made into granules during production.

[0003] The screw granulator heats the material and then extrude the material into thin strips by the pressure of the rotating screw rod, and then cuts the thin strips into granules by a cutting tool. In the prior art, in order to ensure the uniformity of the cut particles and to improve the quality of the material, the screw rod and the cutting tool are usually linked together, so that the material is cut just when a certain amount is extruded, thereby improving the uniformity of the material cutting. However, the cutter needs to rotate one circle for cutting during cutting. At the beginning of the extrusion, the length of the thin strips extruded from the orifice plate is consistent, but the cutter needs to rotate one circle for cutting, resulting in the initial state. The thin strips close to the cutter can be smaller, while the particles relatively far from the cutter are larger, which affects the uniformity of the cutting. Summary of the invention

[0004] The purpose of the present invention is to provide a plastic additive production granulator, which can cut the thin strip material at the location when the cutting knife part is slightly rotated and just passes through the through hole here. Compared with the method of cutting by rotating one circle, this can reduce the uneven cutting in the initial state, thereby improving the uniformity of cutting, and then improving the quality of the product, so as to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical scheme: a plastic additive production granulator, comprising an extrusion half-cylinder, the rear end of the extrusion half-cylinder at the rear end is fixedly plugged with a feed rack, the tops of the two extrusion half-cylinders are commonly fixedly connected with a motor, the output shaft of the motor passes through the extrusion half-cylinder and is fixedly connected with a spiral rod, the bottoms of the inner walls of the two extrusion half-cylinders are commonly fixedly connected with a perforated plate, a cutting assembly is arranged below the perforated plate, an annular array of extrusion holes are opened on the surface of the perforated plate, the cutting assembly comprises a mounting frame fixedly connected to the bottoms of the two extrusion half-cylinders, a passing frame is fixedly connected to the inner side away from the mounting frame, and a passing hole is opened on the upper end surface of the passing frame at a corresponding position of the extrusion hole, the cutting assembly also comprises a round rod fixedly connected to the bottom of the spiral rod, a reciprocating screw is fixedly connected to the bottom of the round rod, a threaded sleeve is threadedly connected to the outer wall of the reciprocating screw, a long rod is fixedly connected to the bottom of the threaded sleeve, a rotating drum is fixedly connected to the bottom of the passing frame, and a cutting knife portion is arranged on the outer annular array of the rotating drum.

[0006] Preferably, the front and rear ends of the extrusion half-cylinder are fixedly connected to brackets, the outer wall of the long rod is fixedly connected to the extrusion frame, the inner side of the rotating cylinder is fixedly connected to a limiting block, the limiting block is inclined close to the side of the extrusion frame, and a torsion spring is fixedly connected between the bottom of the ring side of the rotating cylinder and the bottom of the passing frame.

[0007] Preferably, a constriction sleeve is fixedly connected to the bottom of the inner wall of the through hole, and the inner top of the constriction sleeve is inclined.

[0008] Preferably, a cooling assembly is provided below the orifice plate, and the cooling assembly includes a semiconductor refrigeration plate fixedly connected to the top of the through-frame, the cooling assembly also includes a fixed cylinder fixedly connected to the bottom of the rotating cylinder, and the cooling assembly also includes a lifting rod fixedly connected to the bottom of the long rod, the bottom of the lifting rod extends into the interior of the fixed cylinder and is fixedly connected to a piston plate, the bottom of the fixed cylinder is fixedly plugged with an air inlet pipe, the interior of the piston plate is fixedly plugged with a hose, the top of the hose is fixedly plugged with an air injection pipe, the interior of the through-frame is hollow, the upper part of the air injection pipe is inserted into the interior of the through-frame, the inner wall of the through hole is provided with an ejection hole, and the outer wall of the piston plate fits with the inner wall of the fixed cylinder.

[0009] Preferably, a first check valve is installed inside the air intake pipe, and a second check valve is installed inside the hose below the piston plate.

[0010] Preferably, the ring side of the threaded sleeve is slidably connected to a lifting plate, and the outer side of the lifting plate is slidably connected to a through frame.

[0011] Preferably, elastic bags are fixedly connected to both the top and bottom ends and the left and right sides of the lifting plate, and one end of the plurality of elastic bags away from the lifting plate is fixedly connected to the inside of the frame.

[0012] Preferably, a sleeve is rotatably connected inside the lifting plate, a screw is threadedly connected to the bottom of the sleeve, the bottom of the screw is fixedly connected to the bottom of the inner wall of the frame, and a stirring plate is fixedly connected to the top of the outer wall of the sleeve.

[0013] Preferably, a water spray assembly is provided below the through frame, and the water spray assembly includes a water inlet pipe fixedly connected to the top of the ring side of the fixed cylinder, a third check valve is fixedly connected to the inside of the water inlet pipe, and the cutting knife part includes a fixed cover fixedly connected to the outside of the rotating drum, the fixed cover is fixedly connected to the cutting knife at one end away from the rotating drum, an L-shaped groove is provided inside the fixed cover, an annular groove is provided inside the bottom of the rotating drum, a connecting pipe is fixedly connected and inserted between the annular groove and the fixed cylinder, the L-shaped groove is connected to the annular groove, and a spray hole is provided on the fixed cover near the cutting knife part.

[0014] Preferably, a plurality of the spray holes are provided, and the spray holes are arranged obliquely.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. Through the action of the cutting assembly, when the cutting blade rotates slightly and just passes through the through hole here, the thin strip material at this place is cut. Compared with the method of cutting by rotating one circle, this can reduce the uneven cutting in the initial state, thereby improving the uniformity of cutting and further improving the quality of the product; 2. Through the function of the convergence sleeve, the possibility of material tilting during cutting is reduced, thereby reducing the unevenness of cutting, further improving the uniformity of cutting, and further improving the quality of leveling; 3. Through the cooling component, the thin strip material passing through the hole can be cooled to reduce the viscosity of the material, thereby improving the cutting effect of the material and improving the uniformity of the material particles. Reducing the viscosity of the material is conducive to reducing the occurrence of knife sticking, and further improving the uniformity of the material after cutting; 4. Through the action of the water spray assembly, cold water can be sprayed from the spray hole to the cutter. The principle of spraying cold water is that water, as a lubricant, can reduce the friction between the material and the blade, thereby preventing the blade from sticking, thereby improving the cutting effect and improving the uniformity of granulation. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 It is the overall structural view of the present invention; Figure 2 It is a schematic diagram of a half-section structure of the present invention; Figure 3 It is a half-section structural schematic diagram of the through frame of the present invention; Figure 4 For the present invention Figure 3 A magnified image of point A; Figure 5 It is a half-section structural schematic diagram of the fixing cylinder of the present invention; Figure 6 It is a schematic diagram of a half-section structure of the lifting plate of the present invention; Figure 7 It is a partial structural schematic diagram of the extrusion frame of the present invention; Figure 8 It is a partial structural schematic diagram of the L-shaped groove of the present invention; Fig. 9 It is a bottom view structural schematic diagram of the through frame of the present invention; Description of reference numerals: 1. Extrusion half cylinder; 2. Feeding rack; 3. Motor; 4. Screw rod; 5. Bracket; 6. Cutting assembly; 61. Mounting rack; 62. Passing rack; 63. Passing hole; 64. Round rod; 65. Reciprocating screw rod; 66. Threaded sleeve; 67. Long rod; 68. Rotating cylinder; 69. Cutting knife; 691. Fixed cover; 692. Cutting knife; 693. L-shaped groove; 610. Extrusion rack; 611. Limit block; 612. Torsion spring; 613. Condensing sleeve; 7. Cooling assembly; 71. Semiconductor refrigeration plate; 72, fixed cylinder; 73, lifting rod; 74, piston plate; 75, hose; 76, air injection pipe; 77, first check valve; 78, second check valve; 79, lifting plate; 710, elastic bag; 711, sleeve; 712, screw; 713, air inlet pipe; 714, stirring plate; 8, water spray assembly; 81, water inlet pipe; 82, third check valve; 83, connecting pipe; 84, spray hole; 9, extrusion hole; 10, orifice plate; 11, ring groove; 12, spray hole. DETAILED DESCRIPTION

[0018] 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 described embodiments 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.

[0019] See also Figures 1 to 7 and Fig. 9 The present invention provides a technical solution: a plastic additive production granulator, comprising an extrusion half-cylinder 1, the rear end of the extrusion half-cylinder 1 at the rear end is fixedly plugged with a feed rack 2, the tops of the two extrusion half-cylinders 1 are commonly fixedly connected with a motor 3, the output shaft of the motor 3 passes through the extrusion half-cylinder 1 and is fixedly connected with a spiral rod 4, the bottom of the inner wall of the two extrusion half-cylinders 1 is commonly fixedly connected with a perforated plate 10, a cutting assembly 6 is arranged below the perforated plate 10, the cutting assembly 6 comprises a mounting frame 61 fixedly connected to the bottom of the two extrusion half-cylinders 1, the inner side of the mounting frame 61 is fixedly connected with a through frame 62, the upper end surface of the through frame 62 is located at the corresponding position of the extrusion hole 9 and is provided with a through hole 63, the cutting assembly 6 also comprises a mounting frame 61 fixedly connected to the bottom of the spiral rod 4 The round rod 64 of the part, the bottom of the round rod 64 is fixedly connected with a reciprocating screw 65, the outer wall of the reciprocating screw 65 is threadedly connected with a threaded sleeve 66, the bottom of the threaded sleeve 66 is fixedly connected with a long rod 67, the bottom of the through frame 62 is fixedly connected with a rotating cylinder 68, the outer annular array of the rotating cylinder 68 is provided with a cutting knife part 69, the outer walls of the two extrusion half cylinders 1 are fixedly connected with a bracket 5, the surface annular array of the orifice plate 10 is provided with extrusion holes 9, the outer wall of the long rod 67 is fixedly connected with an extrusion frame 610, the inner side of the rotating cylinder 68 is fixedly connected with a limiting block 611, the limiting block 611 is inclined near the side of the extrusion frame 610, and a torsion spring 612 is fixedly connected between the bottom of the ring side of the rotating cylinder 68 and the bottom of the through frame 62.

[0020] By adopting the above technical solution, the function of the bracket 5 can install the extrusion half-cylinder 1 on the ground. The detachable connection method of the extrusion half-cylinder 1 can be bolted, which is convenient for cleaning the inside of the device after disassembly. A heating component is arranged inside the extrusion half-cylinder 1 to heat the plastic additive. When in use, the plastic additive raw material to be granulated is placed inside the feed rack 2, and then the material enters the inside of the two extrusion half-cylinders 1 by utilizing the inclination inside the feed rack 2. At this time, the output shaft of the motor 3 rotates, so that the screw rod 4 can be transported, which is convenient for pushing the material. As the screw rod 4 continues to rotate, the material can be extruded, which is convenient for the material to pass through the inside of the extrusion hole 9 on the orifice plate 10, so as to extrude the material into thin strips, and the thin strips of material are cut by the cutting component 6, thereby realizing granulation.

[0021] The mounting frame 61 is used to fix the through frame 62. When cutting, the thin strip material passes through the inside of the through hole 63. It should be noted that the aperture of the through hole 63 is larger than the aperture of the extrusion hole 9. This design makes it easy for the thin strip material to pass through. When the material passes through the bottom of the through hole 63, the output shaft of the motor 3 rotates the screw rod 4, so that the round rod 64 fixedly connected to the bottom of the screw rod 4 rotates, and the round rod 64 rotates with the reciprocating screw rod 65. As the reciprocating screw rod 65 rotates, the threaded sleeve 66 can be moved up and down. When the threaded sleeve 66 moves downward, the long rod 67 moves downward, so that The extrusion frame 610 moves downward, and since the top of the limit block 611 is inclined, the rotating drum 68 fixedly connected to the limit block 611 rotates therewith, so that the torsion spring 612 rotates slightly, so that the cutting knife part 69 rotates slightly. It should be noted that there are multiple cutting knife parts 69, and they correspond to the through holes 63 of the annular array. When the cutting knife part 69 rotates slightly, it just passes through the through hole 63 here, so as to cut the thin strip material there. Compared with the method of cutting after one rotation, this can reduce the uneven cutting in the initial state, thereby improving the uniformity of cutting and further improving the quality of the product.

[0022] When the threaded sleeve 66 moves upward, the long rod 67 moves upward, thereby causing the extrusion frame 610 to move upward. At this time, under the elastic force of the torsion spring 612, the rotating drum 68 and the limit block 611 are reset. During this process, the cutting knife part 69 is reset and rotated to cut the strip material again.

[0023] It should be noted that a ball bearing can be rotatably connected to the position of the extrusion frame 610 near the limit block 611, which is helpful to reduce the friction generated during movement.

[0024] Specifically, Figures 2 to 3As shown, a constriction sleeve 613 is fixedly connected to the bottom of the inner wall of the through hole 63, and the inner top of the constriction sleeve 613 is inclined.

[0025] By adopting the above technical solution, the inner bottom diameter of the shrinking sleeve 613 is smaller, which reduces the possibility of material tilting during cutting, thereby reducing the uneven cutting, further improving the uniformity of cutting, and further improving the quality of leveling. It should be noted that the inclined design of the inner top of the shrinking sleeve 613 facilitates the downward passage of thin strip materials.

[0026] Specifically, Figures 2 to 7 As shown, a cooling assembly 7 is provided below the orifice plate 10, and the cooling assembly 7 includes a semiconductor refrigeration plate 71 fixedly connected to the top of the through frame 62, the cooling assembly 7 also includes a fixed cylinder 72 fixedly connected to the bottom of the rotating cylinder 68, and the cooling assembly 7 also includes a lifting rod 73 fixedly connected to the bottom of the long rod 67, the bottom of the lifting rod 73 extends into the interior of the fixed cylinder 72 and is fixedly connected to a piston plate 74, the bottom of the fixed cylinder 72 is fixedly plugged with an air intake pipe 713, the interior of the piston plate 74 is fixedly plugged with a hose 75, and the top of the hose 75 is fixedly plugged with an air injection pipe 76, the interior of the through frame 62 is hollow, and the upper part of the air injection pipe 76 is inserted into the interior of the through frame 62, the inner wall of the through hole 63 is provided with a spray hole 12, the outer wall of the piston plate 74 is in contact with the inner wall of the fixed cylinder 72, the interior of the air intake pipe 713 is installed with a first check valve 77, and the interior of the hose 75 is located below the piston plate 74 and is installed with a second check valve 78.

[0027] The check valve and its installation method are mature existing technologies, so they will not be described in detail. Under the action of the first check valve 77, only external air is allowed to enter the interior of the fixed cylinder 72 through the intake pipe 713. Under the action of the second check valve 78, only air inside the fixed cylinder 72 and below the piston plate 74 is allowed to enter the interior of the hose 75.

[0028] By adopting the above technical solution, the semiconductor refrigeration plate 71 is a mature existing technology, with one end of the heat dissipation facing outward and the other end of the cooling plate facing the inside of the frame 62, so as to cool the air passing through the inside of the frame 62, and the semiconductor refrigeration plate 71 used has a large power and a good cooling effect. When the bottom of the threaded sleeve 66 moves upward with the long rod 67, the lifting rod 73 moves upward with the piston plate 74, so that the outside air enters the interior of the fixed cylinder 72 and is located below the piston plate 74. Then, as the reciprocating screw 65 continues to rotate, the threaded sleeve 66 moves downward with the long rod 67, so that the lifting rod 73 moves the piston plate 74 downward, so that the air inside the fixed cylinder 72 and below the piston plate 74 can enter the inside of the hose 75, and then the gas enters the inside of the frame 62 through the gas injection pipe 76, so that the air pressure inside the frame 62 is increased, and the refrigerated air inside the frame 62 is ejected from the inside of the ejection hole 12, thereby cooling the thin strip material inside the hole 63 to improve the viscosity of the material, thereby improving the cutting effect of the material and the uniformity of the material particles. Reducing the viscosity of the material is conducive to reducing the occurrence of knife sticking, further improving the uniformity of the material after cutting.

[0029] Specifically, Figures 3 to 6 As shown, the ring side of the threaded sleeve 66 is slidably connected with a lifting plate 79, the outer side of the lifting plate 79 is slidably connected with the through frame 62, and the top and bottom ends and left and right sides of the lifting plate 79 are fixedly connected with elastic bags 710, and the ends of the multiple elastic bags 710 away from the lifting plate 79 are fixedly connected with the inside of the through frame 62.

[0030] By adopting the above technical solution, when the reciprocating screw 65 rotates, the threaded sleeve 66 moves up and down, thereby causing the lifting plate 79 to move up and down. This can stir the air passing through the inside of the frame 62, thereby facilitating a more uniform temperature of the air passing through the inside of the frame 62, thereby making the temperature of the air ejected from the inside of the ejection hole 12 uniform, thereby improving the uniformity of cooling and reducing the situation where uneven cooling in some areas affects the uniformity of granulation. The elastic bag 710 is made of elastic rubber material, which does not affect the movement of the lifting plate 79 while ensuring the sealing of the connection between the frame 62 and the lifting plate 79.

[0031] It should be noted that the lifting plate 79 can limit the threaded sleeve 66 to prevent the threaded sleeve 66 from rotating as the reciprocating screw rod 65 rotates.

[0032] Specifically, Figures 3 to 6As shown, the lifting plate 79 is internally rotatably connected with a sleeve 711, the bottom of the sleeve 711 is threadedly connected with a screw 712, the bottom of the screw 712 is fixedly connected to the bottom of the inner wall of the frame 62, and the top of the outer wall of the sleeve 711 is fixedly connected with a stirring plate 714.

[0033] By adopting the above technical solution, when the lifting plate 79 moves up and down with the threaded sleeve 66, relative movement is generated between the sleeve 711 and the screw 712. Under the action of the threaded connection, the sleeve 711 rotates with the stirring plate 714 to further stir the inside of the frame 62, which is further beneficial to the uniform temperature of the air passing through the inside of the frame 62, and improves the uniformity of the temperature of the air ejected from the inside of the ejection hole 12, thereby further improving the uniformity of cooling and reducing the situation where uneven cooling in some areas affects the uniformity of granulation.

[0034] It should be noted that the thread pitch at the top of the screw rod 712 is large, which is conducive to reducing the friction during movement and ensuring that the sleeve 711 can rotate smoothly when relative movement occurs between the sleeve 711 and the screw rod 712.

[0035] Specifically, Figures 3 to 8 As shown, a water spray assembly 8 is arranged below the through frame 62, and the water spray assembly 8 includes a water inlet pipe 81 fixedly connected to the top of the ring side of the fixed cylinder 72, and a third check valve 82 is fixedly connected inside the water inlet pipe 81, and the cutting knife portion 69 includes a fixed cover 691 fixedly connected to the outer side of the rotating cylinder 68, and the end of the fixed cover 691 away from the rotating cylinder 68 is fixedly connected to the cutter 692, and an L-shaped groove 693 is arranged inside the fixed cover 691, and an annular groove 11 is opened inside the bottom of the rotating cylinder 68, and a connecting pipe 83 is fixedly connected and inserted between the annular groove 11 and the fixed cylinder 72, and the L-shaped groove 693 is connected to the annular groove 11, and a spray hole 84 is opened on the fixed cover 691 near the cutting knife portion 69, and a plurality of spray holes 84 are provided, and the spray holes 84 are inclined.

[0036] By adopting the above technical scheme, one end of the water inlet pipe 81 away from the fixed cylinder 72 is connected to the external cold water container, and the third check valve 82 only allows external cold water to pass through the inside of the water inlet pipe 81 and enter the inside of the fixed cylinder 72. When the long rod 67 moves upward and brings the lifting rod 73 and the piston plate 74 downward, the external cold water enters the fixed cylinder 72 through the water inlet pipe 81 and is located above the piston plate 74. When the long rod 67 moves upward and brings the lifting rod 73 and the piston plate 74 upward, the cold water is pushed into the inside of the connecting pipe 83, and then enters the inside of the annular groove 11, and then enters the inside of the L-shaped groove 693 inside the fixed cover 691. Finally, the cold water is sprayed out from the spray hole 84 to the cutter 692. The principle of spraying cold water is that water, as a lubricant, can reduce the friction between the material and the blade, thereby preventing the knife from sticking, thereby improving the cutting effect and improving the uniformity of granulation.

[0037] It should be noted that a fourth check valve needs to be installed inside the fixed cover 691 to ensure that external gas does not enter the interior of the fixed cylinder 72 when the lifting rod 73 and the piston plate 74 move downward.

[0038] Working principle: the plastic additive raw material to be granulated is placed into the inside of the feed rack 2, and then the material enters the inside of the extrusion half cylinder 1 by utilizing the inclination of the inside of the feed rack 2. At this time, the output shaft of the motor 3 rotates, so that the screw rod 4 can be transported, which is convenient for pushing the material. As the screw rod 4 continues to rotate, the material can be extruded, which is convenient for the material to pass through the inside of the extrusion hole 9 on the orifice plate 10, so that the material can be squeezed into thin strips, and the thin strips of material are cut by the cutting component 6, thereby realizing granulation. The output shaft of the motor 3 drives the screw rod 4 to rotate, so that the round rod 64 fixedly connected to the bottom of the screw rod 4 rotates, and the round rod 64 then drives the reciprocating screw rod 65 to rotate. As the reciprocating screw rod 65 rotates, the threaded sleeve 66 can be Move up and down. When the threaded sleeve 66 moves downward, the long rod 67 moves downward, thereby causing the extrusion frame 610 to move downward. Since the top of the limit block 611 is tilted, the rotating drum 68 fixedly connected to the limit block 611 rotates accordingly, thereby causing the torsion spring 612 to rotate slightly, thereby causing the cutting knife part 69 to rotate slightly. It should be noted that there are multiple cutting knife parts 69, which correspond to the through holes 63 of the annular array. When the cutting knife part 69 rotates slightly, it just passes through the through hole 63 here, thereby cutting the thin strip material there. Compared with the method of cutting after one rotation, this can reduce the uneven cutting in the initial state, thereby improving the uniformity of cutting and thus improving the quality of the product.

[0039] When the bottom of the threaded sleeve 66 moves upward with the long rod 67, the lifting rod 73 moves upward with the piston plate 74, so that the external air enters the interior of the fixed cylinder 72 and is located below the piston plate 74. Then, as the reciprocating screw 65 continues to rotate, the threaded sleeve 66 moves downward with the long rod 67, so that the lifting rod 73 moves downward with the piston plate 74, so that the air inside the fixed cylinder 72 and located below the piston plate 74 can enter the interior of the hose 75, and then the gas enters the interior of the frame 62 through the gas injection pipe 76, so that the air passing through the The air pressure inside the rack 62 increases, and the refrigerated air passing through the rack 62 is ejected from the inside of the ejection hole 12, thereby cooling the thin strip material passing through the inside of the hole 63, so as to reduce the viscosity of the material, thereby improving the cutting effect of the material and improving the uniformity of the material particles. Reducing the viscosity of the material is conducive to reducing the occurrence of knife sticking, further improving the uniformity of the material after cutting. When the reciprocating screw 65 rotates, the threaded sleeve 66 moves up and down, thereby causing the lifting plate 79 to move up and down, so that the air passing through the inside of the rack 62 can be stirred. This helps to make the temperature of the air passing through the frame 62 more uniform, so that the temperature of the air ejected from the inside of the ejection hole 12 is uniform, and the cooling uniformity is improved. When the lifting plate 79 moves up and down with the threaded sleeve 66, the sleeve 711 and the screw 712 produce relative movement. Under the action of the threaded connection, the sleeve 711 rotates with the stirring plate 714 to further stir the inside of the frame 62, which further helps to make the temperature of the air passing through the frame 62 uniform, improve the temperature uniformity of the air ejected from the inside of the ejection hole 12, and further improve The uniformity of cooling is improved to reduce the situation where uneven cooling in some areas affects the uniformity of granulation. When the long rod 67 moves upward with the lifting rod 73 and the piston plate 74, the cold water is pushed into the interior of the connecting pipe 83, and then enters the interior of the annular groove 11, and then enters the interior of the L-shaped groove 693 inside the fixed cover 691. Finally, the cold water is sprayed out from the spray hole 84 to the cutter 692. The principle of spraying cold water is that water acts as a lubricant, which can reduce the friction between the material and the blade, thereby preventing the blade from sticking, thereby improving the cutting effect and improving the uniformity of granulation.

[0040] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A granulator for producing plastic additives, comprising two detachably connected extrusion half-barrels (1), characterized in that: A feed rack (2) is fixedly inserted at the rear end of the extrusion half-cylinder (1) at the rear end, a motor (3) is fixedly connected to the top of the two extrusion half-cylinders (1), an output shaft of the motor (3) passes through the extrusion half-cylinder (1) and is fixedly connected to a spiral rod (4), a perforated plate (10) is fixedly connected to the bottom of the inner wall of the two extrusion half-cylinders (1), a cutting assembly (6) is arranged below the perforated plate (10), and an annular array of extrusion holes (9) are provided on the surface of the perforated plate (10); The cutting assembly (6) comprises a mounting frame (61) fixedly connected to the bottom of the two extrusion half cylinders (1), a through frame (62) fixedly connected to the inner side of the mounting frame (61), a through hole (63) being provided on the upper end surface of the through frame (62) at a position corresponding to the extrusion hole (9), the cutting assembly (6) further comprises a round rod (64) fixedly connected to the bottom of the spiral rod (4), a reciprocating screw rod (65) fixedly connected to the bottom of the round rod (64), a threaded sleeve (66) being threadedly connected to the outer wall of the reciprocating screw rod (65), a long rod (67) being fixedly connected to the bottom of the threaded sleeve (66), a rotating cylinder (68) being fixedly connected to the bottom of the through frame (62), and a cutting knife portion (69) being provided in an annular array on the outer side of the rotating cylinder (68).

2. A plastic additive production granulator according to claim 1, characterized in that: The outer walls of the two extrusion half cylinders (1) are fixedly connected to a bracket (5), the outer wall of the long rod (67) is fixedly connected to an extrusion frame (610), the inner side of the rotating cylinder (68) is fixedly connected to a limit block (611), the limit block (611) is inclinedly arranged close to a side of the extrusion frame (610), and a torsion spring (612) is fixedly connected between the bottom of the ring side of the rotating cylinder (68) and the bottom of the passing frame (62).

3. A plastic additive production granulator according to claim 1, characterized in that: The bottom of the inner wall of the through hole (63) is fixedly connected with a contraction sleeve (613), and the inner top of the contraction sleeve (613) is arranged at an angle.

4. A plastic additive production granulator according to claim 2, characterized in that: A cooling assembly (7) is arranged below the orifice plate (10), the cooling assembly (7) comprising a semiconductor refrigeration plate (71) fixedly connected to the top of the through frame (62), the cooling assembly (7) further comprising a fixed cylinder (72) fixedly connected to the bottom of the rotating cylinder (68), the cooling assembly (7) further comprising a lifting rod (73) fixedly connected to the bottom of the long rod (67), the bottom of the lifting rod (73) extending into the interior of the fixed cylinder (72) and fixedly connected to a piston plate (74), the bottom of the fixed cylinder (72) being fixedly plugged with an air intake pipe (713), the interior of the piston plate (74) being fixedly plugged with a hose (75), the top of the hose (75) being fixedly plugged with an air injection pipe (76), the interior of the through frame (62) being hollow, the upper portion of the air injection pipe (76) being inserted into the interior of the through frame (62), the inner wall of the through hole (63) being provided with a spray hole (12), and the outer wall of the piston plate (74) being in contact with the inner wall of the fixed cylinder (72).

5. A plastic additive production granulator according to claim 4, characterized in that: A first check valve (77) is installed inside the air intake pipe (713), and a second check valve (78) is installed inside the hose (75) below the piston plate (74).

6. A plastic additive production granulator according to claim 4, characterized in that: The ring side of the threaded sleeve (66) is slidably connected to a lifting plate (79), and the outer side of the lifting plate (79) is slidably connected to a through frame (62).

7. A plastic additive production granulator according to claim 6, characterized in that: Elastic bags (710) are fixedly connected to both the top and bottom ends and the left and right sides of the lifting plate (79), and one end of the plurality of elastic bags (710) away from the lifting plate (79) is fixedly connected to the inside of the through frame (62).

8. A plastic additive production granulator according to claim 7, characterized in that: The lifting plate (79) is rotatably connected to a sleeve (711) inside, the bottom of the sleeve (711) is threadedly connected to a screw rod (712), the bottom of the screw rod (712) is fixedly connected to the bottom of the inner wall of the frame (62), and the top of the outer wall of the sleeve (711) is fixedly connected to a stirring plate (714).

9. A plastic additive production granulator according to claim 4, characterized in that: A water spray assembly (8) is arranged below the through frame (62), the water spray assembly (8) comprising a water inlet pipe (81) fixedly connected to the top of the ring side of the fixed cylinder (72), the interior of the water inlet pipe (81) being fixedly connected to a third check valve (82), the cutting knife portion (69) comprising a fixed cover (691) fixedly connected to the outer side of the rotating cylinder (68), the end of the fixed cover (691) away from the rotating cylinder (68) being fixedly connected to the cutting knife (692), the interior of the fixed cover (691) being provided with an L-shaped groove (693), the bottom of the rotating cylinder (68) being provided with an annular groove (11), a connecting pipe (83) being fixedly connected and inserted between the annular groove (11) and the fixed cylinder (72), the L-shaped groove (693) being in communication with the annular groove (11), and a spray hole (84) being provided on the fixed cover (691) at a position close to the cutting knife portion (69).

10. A plastic additive production granulator according to claim 9, characterized in that: A plurality of the spray holes (84) are provided, and the spray holes (84) are arranged obliquely.

Images