A modified plastic composite masterbatch and its production process and device

Abstract

The present invention relates to the technical field of plastic masterbatch preparation, and specifically discloses a modified plastic composite masterbatch and its production process and device. The modified plastic composite masterbatch includes polypropylene, glass fiber, nucleating agent, maleic anhydride grafted polyethylene, antioxidant, and flame retardant. An extrusion assembly is installed in the extrusion barrel, one end of the extrusion barrel is connected to the material barrel, and the other end is fixedly connected to the extrusion die head. A cooling box is fixedly installed on the machine. The extrusion assembly includes a rotating rod and a moving rod. A mounting hole is opened at one end of the rotating rod, and the moving rod slides in the mounting hole. A spiral plate is fixedly connected to the rotating rod in an array. The production device of the present invention mixes the polypropylene raw material multiple times to ensure that the raw materials are mixed evenly. During the raw material heating and extrusion process, the performance of the extruded modified rubber is balanced and reliable, and the product performance of the modified rubber composite masterbatch is improved. The production process uses polypropylene as raw material, and modifies it to obtain a high-strength, high-flame-retardant modified plastic, and the production cost is low.

Description

Technical Field

[0001] The invention relates to the technical field of plastic masterbatch preparation, in particular to a modified plastic composite masterbatch and a production process and device thereof. Background Art

[0002] Polypropylene plastic is a high-performance polymer, but it has poor cold resistance, is easy to burn, and is not impact-resistant in low-temperature environments.

[0003] In the prior art, the application number is CN2020115215285, and the name disclosed is: A device and method for producing electrostatic electret masterbatch using modified inorganic powder, and the IPC classification number is: C08L23 / 12, which includes a processing table, a mixing barrel, a mixing and stirring screw, a pushing assembly and a feeding assembly; the feeding assembly includes a feeding barrel, a feeding stirring shaft, a feeding stirring paddle and a vibration component, and the vibration component includes a mounting ring, a guide ring, a driving cylinder and a guide telescopic rod, which is located on the side of the processing table close to the mixing barrel, one end of the guide telescopic rod is fixedly connected to the output end of the driving cylinder, and the other end is fixedly connected to the feeding barrel, and is located between the feeding barrel and the driving cylinder.

[0004] However, in the prior art, such as the device mentioned in application number: CN2020115215285, the degree of mixing of raw materials is low and the raw materials cannot be fully mixed. Subsequently, in the subsequent modification process, polypropylene cannot be uniformly modified, and the extruded plastic masterbatch will have performance differences. Therefore, it is necessary to design a modified plastic composite masterbatch and its production process and device. Summary of the invention

[0005] The object of the present invention is to provide a modified plastic composite masterbatch and a production process and device thereof to solve the problems in the prior art.

[0006] The purpose of the present invention can be achieved through the following technical solutions:

[0007] A modified plastic composite masterbatch, comprising polypropylene, glass fiber, a nucleating agent, maleic anhydride grafted polyethylene, an antioxidant, and a flame retardant;

[0008] The mass ratio of the above raw material components is: 40-60 parts of polypropylene, 25-30 parts of glass fiber, 5-10 parts of nucleating agent, 5-10 parts of maleic anhydride grafted polyethylene, 2.5-5 parts of antioxidant, and 2.5-5 parts of flame retardant.

[0009] Preferably, the nucleating agent is one of polyvinyl cyclohexane, polyvinyl pentane and ethylene / acrylate copolymer.

[0010] The antioxidant is 3-(3,5-di-tert-butyl-4-hydroxyphenyl) propionate.

[0011] The flame retardant is melamine cyanurate.

[0012] Preferably, the production device includes a machine platform, on which a material barrel is fixedly installed, the material barrel is used to add mixed polypropylene, nucleating agent, maleic anhydride grafted polyethylene, antioxidant, and flame retardant, an extrusion barrel is fixedly installed on the machine platform, and an auxiliary feeding hopper connected to the extrusion barrel is fixedly connected to one side of the extrusion barrel on the machine platform, and the auxiliary feeding hopper is used to add glass fiber raw material, an extrusion assembly is installed in the extrusion barrel, one end of the extrusion barrel is connected to the material barrel, and the other end is fixedly connected to an extrusion die head.

[0013] A cooling box for modified plastic molding is fixedly installed on the machine platform, and the extrusion component includes a rotating rod and a moving rod. A mounting hole is opened at one end of the rotating rod, and the moving rod is slidably located in the mounting hole. A spiral plate for material mixing and conveying is fixedly arrayed on the rotating rod.

[0014] Preferably, a drive box is fixedly installed on the machine platform and below the material barrel, a shaft is rotatably arranged in the drive box, bevel gear 2 and gear 1 are fixedly connected to the shaft, and motor 1 is fixedly installed on the machine platform and on one side of the drive box.

[0015] The material barrel includes a barrel body, a discharge pipe for connecting to an extrusion barrel is fixedly installed on one side of the barrel body, a first annular plate and a second annular plate for temporarily storing raw materials are fixedly installed in the barrel body, the first annular plate and the second annular plate are both obliquely fixed to the inner wall of the barrel body, a top frame is fixedly installed in the barrel body, and an inclined plate for stirring is fixedly connected below the top frame.

[0016] Preferably, a mixing assembly is fixedly installed in the material barrel, and the mixing assembly includes a rotating shaft rotatably installed on the drive box, one end of the rotating shaft is fixedly connected to a bevel gear, and the other end is fixedly connected to a collecting hopper, a discharge chute is provided in the bottom array of the collecting hopper, an inclined plate is slidably installed on the collecting hopper, and a bulk plate is fixedly installed on the rotating shaft.

[0017] One of the bulk plates is located between the discharge trough and the first annular plate, and the other bulk plate is located between the first annular plate and the second annular plate. An array of L-shaped rods is fixedly connected to the rotating shaft, and an inclined rod for stirring the raw materials on the first annular plate is fixedly connected to the L-shaped rod.

[0018] The rotating shaft is fixedly connected with a lever array for stirring the raw materials on the second annular plate, and a plurality of columns are fixedly connected to the lever. A rotating block is rotatably mounted on the column. A feeding screw is fixedly mounted on the rotating shaft. The feeding screw is located at one side of the discharge pipe, and bevel gear one cooperates with bevel gear two.

[0019] Preferably, a heater is installed in the extruder barrel, a rotating rod is rotatably installed in the extruder barrel, one end of the rotating rod away from the mounting hole is connected to an output end of a motor, a gear 2 is fixedly connected to the rotating rod, gear 2 cooperates with gear 1, and the spacing of the spiral plates gradually decreases.

[0020] The rotating rod is fixedly mounted with an arc blade 1 and an arc blade 2, the arc blade 1 and the arc blade 2 are staggeredly arranged on the rotating rod, and the arc blade 1 and the arc blade 2 are in opposite directions.

[0021] Preferably, an annular arc groove is provided in the mounting hole, a moving block is fixedly connected to the moving rod, a spherical block is fixedly connected to one end of the moving rod, and a stopper is fixedly connected to the other end, a guide slider is fixedly installed on the moving rod, and the spherical block cooperates with the annular arc groove.

[0022] The extruder is provided with a material trough in which a conical block is fixedly installed, a flow channel is provided in the conical block, a guide rail is fixedly provided in the flow channel, and the guide slide block cooperates with the guide rail.

[0023] Preferably, two round rods are rotatably mounted on the cooling box, a top frame is fixedly mounted inside the cooling box, a cylinder is fixedly mounted inside the top frame, a mounting block is fixedly connected to the output end of the cylinder, a support rod is rotatably connected to the mounting block, and a straight rod is rotatably mounted on the mounting block.

[0024] A slide groove is arranged in the array on the top frame, a slide rod is slidably installed in the slide groove, a spring for connecting the slide groove is fixedly connected to one side of the slide rod, an arc surface block is fixedly connected to one end of the slide rod, a straight rod 2 is fixedly connected to the arc surface block, and the support rod is slidably connected to the arc surface block.

[0025] The straight rods 1 and 2 are rotatably mounted with guide rollers, which are provided with round grooves. One end of the support rod is provided with a straight groove. The top frame is fixedly connected with a side rod, and the end of the side rod is fixedly connected with a limiting rod, which cooperates with the straight groove.

[0026] Preferably, a material guide roller is fixedly connected to the round rod, a material discharge plate is provided on one side of the material guide roller, a gear three is fixedly connected to the round rod, two gear threes cooperate for transmission, a motor two for connecting and driving a round rod to rotate is fixedly connected to one side of the cooling box, and a push rod is fixedly connected to one end of the other round rod in an array.

[0027] One end of the cooling box is fixedly connected to a guide rail, the lower end of the guide rail is fixedly connected to a second spring, a driven rod is slidably connected to the guide rail, the second spring is fixedly connected to the driven rod, a paddle is fixedly connected to one side of the driven rod, and a cutter is fixedly connected to the other side.

[0028] A production process of a modified plastic composite masterbatch production device, the production process comprising the following steps:

[0029] S1. Add raw materials

[0030] Polypropylene, nucleating agent, maleic anhydride grafted polyethylene, antioxidant, flame retardant and glass fiber are added to the device respectively.

[0031] S2, Extrusion

[0032] After the raw materials are initially mixed, they are mixed and heated in the extruder to modify the polypropylene raw materials, and then glass fiber is added and extruded to compound the polypropylene to form a modified plastic.

[0033] S3,

[0034] The modified plastic obtained in S2 is extruded to form a wire, and the wire passes through a cooling box to stably cool the wire.

[0035] S4, Granulation

[0036] The cooled wire is led out from the cooling box and pelletized to obtain modified plastic composite masterbatch.

[0037] Beneficial effects of the present invention:

[0038] 1. The production device of the present invention mixes polypropylene and other raw materials multiple times to ensure that the raw materials are mixed evenly, and then in the process of heating and extruding the raw materials, the polypropylene is fully modified, the performance of the extruded modified rubber is improved to be balanced and reliable, and the product performance of the modified rubber composite masterbatch is improved;

[0039] 2. The production device of the present invention continuously extrude the modified plastic, effectively reduce the air wall in the plastic, ensure the quality of the plastic product, reduce the pores on the surface of the masterbatch, and then cool and adjust to ensure stable cooling of the plastic wire. It has a simple structure and is easy to use;

[0040] 3. The production process of the present invention uses polypropylene as raw material and modifies it to obtain high-strength, high-flame-retardant modified plastics. The production process steps are simple, the production cost is low, and the obtained product masterbatch has excellent performance and is suitable for industrial applications. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] The present invention will be further described below in conjunction with the accompanying drawings.

[0042] Figure 1 It is a schematic diagram of the structure of the device of the present invention;

[0043] Figure 2 It is a schematic diagram of the material barrel structure of the present invention;

[0044] Figure 3 It is a schematic diagram of the structure of the mixing assembly of the present invention;

[0045] Figure 4 is a cross-sectional view of the device of the present invention;

[0046] Figure 5The present invention Figure 4 The enlarged structural diagram at A in the middle;

[0047] Figure 6 The present invention Figure 4 The enlarged structural diagram at B in the middle;

[0048] Figure 7 It is a schematic diagram of the structure of the extrusion assembly of the present invention;

[0049] Figure 8 is a partial cross-sectional view of an extrusion assembly of the present invention;

[0050] Fig. 9 It is a schematic diagram of the cooling box structure of the present invention;

[0051] Fig.10 It is a partial structural cross-sectional view of the cooling box of the present invention;

[0052] Fig.11 It is a schematic diagram of the top frame structure of the present invention. DETAILED DESCRIPTION

[0053] 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.

[0054] A modified plastic composite masterbatch is characterized by obtaining high-performance polypropylene by modifying polypropylene raw materials, and its IPC classification number is: C08L23 / 12.

[0055] The modified plastic composite masterbatch includes polypropylene, glass fiber, nucleating agent, maleic anhydride grafted polyethylene, antioxidant and flame retardant.

[0056] The mass ratio of the above components is as follows:

[0057] 40-60 parts of polypropylene, 25-30 parts of glass fiber, 5-10 parts of nucleating agent, 5-10 parts of maleic anhydride grafted polyethylene, 2.5-5 parts of antioxidant, and 2.5-5 parts of flame retardant.

[0058] Among the above raw material components, the nucleating agent is selected from one of polyvinyl cyclohexane, polyethylene pentane, and ethylene / acrylate copolymer. In the plastic raw material of polypropylene, it can change the incomplete crystallization performance of polypropylene, accelerate the crystallization rate and crystallization density of polypropylene, and shorten the polypropylene plastic molding cycle.

[0059] The antioxidant is 3-(3,5-di-tert-butyl-4-hydroxyphenyl) propionate, with a molecular formula of C35H62O3, which is used as an antioxidant for polypropylene to improve the stability of composite plastic polymers.

[0060] The flame retardant is melamine cyanurate, which is added to polypropylene. After the product is mixed, it will make the polypropylene plastic material insulated and oxygen-proof, and increase the flame retardant performance.

[0061] The composite plastic material made by mixing glass fiber and polypropylene can enhance the performance of polypropylene plastic and increase the tensile strength, bending strength and impact strength of the plastic.

[0062] A production device for modified plastic composite masterbatch, the production device comprising: a machine 1, a material barrel 2 is fixedly installed on the machine 1, the material barrel 2 mixes polypropylene, nucleating agent, maleic anhydride grafted polyethylene, antioxidant, and flame retardant raw materials, an extrusion barrel 4 is fixedly installed on the machine 1, an extrusion assembly is installed in the extrusion barrel 4, and a heater is installed in the extrusion barrel 4, and the heater is the prior art.

[0063] One end of the extrusion barrel 4 is connected to the material barrel 2, and the other end is equipped with an extrusion die. A cooling box 5 is fixedly installed on the machine 1. The composite plastic wire discharged from the extrusion die is water-cooled and shaped in the cooling box 5, and then cut and processed into plastic masterbatch.

[0064] like Figure 2-5 As shown, the material barrel 2 includes a barrel body 21, and a discharge pipe 26 is fixedly installed on one side of the barrel body 21. The discharge pipe 26 is connected to the extrusion barrel 4 and is used to introduce the mixed raw materials into the extrusion barrel 4. A first annular plate 22 is fixedly installed in the barrel body 21, and a second annular plate 23 is fixedly installed in the barrel body 21 and below the first annular plate 22. Both the first annular plate 22 and the second annular plate 23 are inclined structures and are fixedly connected to the inner wall of the barrel body 21, so that the material is stored between the annular plate and the inner wall of the barrel body 21.

[0065] A top frame 24 is fixedly installed in the barrel body 21 , and symmetrically distributed inclined plates 25 are fixedly installed below the top frame 24 . The inclined plates 25 are used to stir and mix the materials.

[0066] A mixing assembly 3 is fixedly installed in the material barrel 2, and the mixing assembly 3 includes a rotating shaft 31, one end of the rotating shaft 31 is fixedly connected to a bevel gear 39, and the other end is fixedly installed to a collecting hopper 311. The bottom of the collecting hopper 311 is provided with an array of discharge chutes 312, and the inclined plate 25 abuts against the inner wall of the collecting hopper 311. When polypropylene, nucleating agent, maleic anhydride grafted polyethylene, antioxidant, and flame retardant are loaded into the collecting hopper 311, the collecting hopper 311 rotates, and the inclined plate 25 and the collecting hopper 311 move relative to each other to stir the raw materials in the collecting hopper 311.

[0067] A bulk plate 32 is fixedly installed on the rotating shaft 31. A bulk plate 32 is located below the discharge chute 312 and above the first annular plate 22. After the material passes through the discharge chute 312, it is evenly scattered along the bulk plate 32 and into the first annular plate 22. A plurality of inclined rods 34 are installed on the first annular plate 22. One end of the inclined rod 34 is fixedly connected to an L-shaped rod 33. The L-shaped rod 33 is fixedly connected to the rotating shaft 31.

[0068] As the rotating shaft 31 rotates, the inclined rod 34 is attached to the first annular plate 22 to mix and stir the materials on the first annular plate 22, thereby achieving the first mixing of the raw materials of polypropylene, nucleating agent, maleic anhydride grafted polyethylene, antioxidant, and flame retardant.

[0069] Another bulk plate 32 is located between the first annular plate 22 and the second annular plate 23, and is used for secondary dispersion of the materials scattered from the first annular plate 22 after mixing, so that the raw materials are evenly distributed on the second annular plate 23, and an array of shifting rods 35 are fixedly installed on the rotating shaft 31, and a plurality of columns 36 are fixedly installed on the shifting rod 35, a spherical groove is formed on the column 36, and a rotating block 37 is installed on the column 36, and a ball block is fixedly connected to one side of the rotating block 37, and the ball block is rotatably connected to the spherical groove.

[0070] The column 36 and the lever 35 rotate on the second annular plate 23 to perform a second mixing operation on the material on the second annular plate 23, and then the rotating block 37 rotates on the column 36 when it contacts the material. The rotation of the rotating block 37 also shifts the material to accelerate mixing, which can improve the uniformity of material mixing.

[0071] A feed screw 38 is fixedly mounted on the rotating shaft 31 , and is located on one side of the discharge pipe 26 , and between the second annular plate 23 and the bevel gear 1 39 , and is used to transport the material delivered from the second annular plate 23 , so that the raw materials can be discharged smoothly from the discharge pipe 26 .

[0072] A drive box is fixedly installed on the machine 1 and located below the material barrel 2, the rotating shaft 31 is rotatably installed on the drive box, and a bevel gear 39 is rotatably installed in the drive box. A shaft rod is rotatably provided in the drive box and located on one side of the bevel gear 39, and a bevel gear 2 13 and a gear 12 are fixedly connected to the shaft rod, and the bevel gear 1 39 is meshed with the bevel gear 2 13. An auxiliary feeding hopper 14 is fixedly installed on the machine 1 and located on one side of the extrusion barrel 4, and the discharge port of the auxiliary feeding hopper 14 is connected to the extrusion barrel 4.

[0073] like Figure 6-8As shown, a motor 11 is fixedly installed on the machine 1, and the motor 11 is located on one side of the drive box. The other side of the drive box is connected to the extrusion barrel 4. A rotating rod 41 is rotatably installed in the extrusion barrel 4, and one end of the rotating rod 41 is fixedly connected to the output end of the motor 11. A gear 2 42 is fixedly connected to the rotating rod 41, and the gear 2 42 is located below the gear 12 and meshes with the gear 12 to drive the gear 12 to rotate.

[0074] An array of spiral plates 43 is fixedly connected to the rotating rod 41, and the spacing between the spiral plates 43 gradually decreases, which can effectively squeeze the heated raw materials in the extrusion barrel 4, increase the density of the raw materials, and exhaust the air in the raw materials. An arc blade 1 44 and an arc blade 2 45 are installed between the two sections of the spiral plates 43. The arc blade 1 44 and the arc blade 2 45 are alternately arranged on the rotating rod 41, and the bending directions of the arc blade 1 44 and the arc blade 2 45 are opposite.

[0075] After the raw material is heated, it moves from the spiral plate 43 to the arc blade 1 44, and then the arc blade 1 44 cuts and stirs the raw material. Then the raw material enters the arc blade 2 45 from the arc blade 1 44, and is cut and stirred again to extrude the composite plastic, thereby improving the uniformity of the mixing of the various components of the plastic, ensuring the modification process of the polypropylene, and improving the quality of the composite plastic. After repeated stirring, it is discharged to the next spiral plate 43, at which time glass fiber is added from the auxiliary feeding hopper 14 and added to the extrusion barrel 4, and the glass fiber is mixed with the modified polypropylene rubber at the spiral plate 43 to further modify the polypropylene rubber and improve the strength of the rubber.

[0076] A mounting hole 411 is provided at one end of the rotating rod 41 away from the motor 11, and an annular arc groove 412 is provided in the mounting hole 411. A moving rod 46 is arranged in the mounting hole 411, and a moving block 47 is fixedly connected to the moving rod 46. A spherical block 461 is fixedly connected to one end of the moving rod 46, and a stopper 48 is fixedly connected to the other end. A guide slider 49 is fixedly installed on the moving rod 46. A material trough 40 is provided in the extrusion barrel 4, and a conical block is fixedly installed in the material trough 40. A flow channel is provided in the conical block, which can be used for rubber extrusion.

[0077] A guide rail 401 is fixedly provided in the flow channel, and the guide slider 49 is slidably connected to the guide rail 401. The spherical block 461 slides in the annular arc groove 412, so that the movable rod 46 can move back and forth under the drive of the rotating rod 41. The movable block 47 pushes the modified rubber into the flow channel and flows from the other end of the flow channel to the extrusion die for molding. Conversely, the movable rod 46 moves toward the rotating rod 41, which can reset the movable block 47, and the spherical block 461 blocks the flow channel, so that the rubber in the conical surface is filled, and then subsequent extrusion is carried out.

[0078] like Figure 9-11As shown, a top frame 54 is fixedly installed in the cooling box 5, one end of the cooling box 5 is located below the extrusion die head, and the extruded modified plastic wire enters the cooling box 5 for cooling and forming. Two round rods 52 are rotatably installed on the other end of the cooling box 5, and a cylinder 56 is fixedly installed in the top frame 54. The output end of the cylinder 56 is fixedly connected to a mounting block 561, and a straight rod 562 is rotatably installed on the mounting block 561.

[0079] An array of slide grooves 551 are provided on the top frame 54, a slide rod 552 is slidably installed in the slide groove 551, a spring 1 553 is fixedly connected to one side of the slide rod 552, one end of the spring 1 553 is fixedly connected to the slide groove 551, one end of the slide rod 552 is slidably connected to the slide groove 551, and the other end is fixedly connected to an arc block 554, and a straight rod 2 555 is fixedly connected to the arc block 554.

[0080] A supporting rod 57 is rotatably connected to the mounting block 561, and the supporting rod 57 is slidably connected to the arc surface below the arc surface block 554. A straight groove 59 is provided at the other end of the supporting rod 57. A side rod 563 is fixedly connected to the top frame 54, and a limiting rod is fixedly connected to the end of the side rod 563. The limiting rod is slidably connected to the straight groove 59. Guide rollers 58 are rotatably installed on the straight rod 1 562 and the straight rod 2 555, and a circular groove is provided on the guide roller 58 for guiding the modified rubber wire.

[0081] A material guide roller 521 is fixedly connected to the round rod 52, and a material discharge plate is arranged on one side of the material guide roller 521. The modified rubber wire passes through between the two material guide rollers 521 and then lies on the material discharge plate. A gear three 522 is fixedly connected to the round rod 52, and the two gears three 522 are meshed. A motor two 520 is fixedly installed on one side of the cooling box 5, and the output end of the motor two 520 is fixedly connected to the end of one round rod 52, and under the transmission action of the gear three 522, the two material guide rollers 521 can be driven to rotate in opposite directions.

[0082] One end of a round rod 52 is fixedly connected to an array-distributed push rod 525, a guide rail 523 is fixedly installed at one end of the cooling box 5, a spring 2 524 is fixedly connected to the lower end of the guide rail 523, a driven rod 53 is slidably connected to the guide rail 523, the spring 2 524 is fixedly connected to the driven rod 53, a paddle 531 is fixedly connected to one side of the driven rod 53, and a cutter 532 is fixedly connected to the other side.

[0083] During the rotation of the round rod 52, the push rod 525 is driven from below the paddle plate 531 to lift the paddle plate 531, thereby moving the cutter 532. After the paddle plate 531 is separated from the push rod 525, the spring 2 524 releases its elastic force to push the driven rod 53 downward, so that the cutter 532 cuts the wire between the guide roller 521 and the unloading plate to obtain rubber masterbatch.

[0084] Here’s how it works:

[0085] The raw materials are placed in the material barrel 2 and the auxiliary feeding hopper 14 respectively, and then part of the raw materials are fully mixed in the material barrel 2, and then transported to the extrusion barrel 4, the raw materials are heated and extruded, the raw materials are transported, the modified mixing operation is performed, and the air therein is squeezed out. After the modified polypropylene is heated and melted, the remaining raw materials are added from the auxiliary feeding hopper 14 and mixed with the modified polypropylene, and the extrusion operation is continued. The completely mixed raw materials are transported to the conical block, and the moving block 47 moves back and forth to extrude the raw materials intermittently and continuously. The raw materials enter the extrusion die head and are extruded to form modified plastic composite wires.

[0086] The wire passes through the three guide rollers 58 to be cooled. When the temperature of the wire is too high, the cylinder 56 can be used to drive the middle guide roller 58 to move up and down, driving the support rod 57 to swing. When the support rod 57 adjusts its position, the camber block 554 slides. The movement of the camber block 554 can be controlled to adjust the spacing between the three guide rollers 58, thereby increasing the conveying length of the wire on the three guide rollers 58, thereby increasing the cooling time of the wire in the cooling box 5 and improving the cooling and forming effect. Then, the wire passes between the two guide rollers 521, and the push rod 525 intermittently lifts the cutter 532, which can pelletize the wire to obtain modified plastic composite masterbatch.

[0087] A production process of a modified plastic composite masterbatch production device, the production process comprising the following steps:

[0088] S1. Add raw materials

[0089] Polypropylene, nucleating agent, maleic anhydride grafted polyethylene, antioxidant, flame retardant and glass fiber are added to the device respectively.

[0090] In this embodiment, 53 parts of polypropylene, 27 parts of glass fiber, 7 parts of nucleating agent, 6 parts of maleic anhydride grafted polyethylene, 3 parts of antioxidant, and 4 parts of flame retardant.

[0091] S2, Extrusion

[0092] After the raw materials are preliminarily mixed, they are mixed and heated in the extrusion barrel 4 to modify the polypropylene raw materials, and then glass fibers are added and extruded to compound the polypropylene to form modified plastic.

[0093] S3,

[0094] In S2, the modified plastic is extruded to form a wire, and the wire passes through a cooling box 5 to stably cool the wire.

[0095] S4, Granulation

[0096] The cooled wire rod is led out from the cooling box 5 and pelletized to obtain a modified plastic composite masterbatch.

[0097] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0098] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments, and the above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, and these changes and improvements all fall within the scope of the present invention to be protected.

Claims

1. A production device for modified plastic composite masterbatch, characterized in that: The raw material components of the modified plastic composite masterbatch include polypropylene, glass fiber, nucleating agent, maleic anhydride grafted polyethylene, antioxidant, and flame retardant; The mass ratio of the above raw material components is: 40-60 parts of polypropylene, 25-30 parts of glass fiber, 5-10 parts of nucleating agent, 5-10 parts of maleic anhydride grafted polyethylene, 2.5-5 parts of antioxidant, and 2.5-5 parts of flame retardant; The production device comprises a machine (1), a material barrel (2) is fixedly mounted on the machine (1), the material barrel (2) is used to add mixed polypropylene, nucleating agent, maleic anhydride grafted polyethylene, antioxidant, and flame retardant, an extrusion barrel (4) is fixedly mounted on the machine (1), an auxiliary feeding hopper (14) connected to the extrusion barrel (4) is fixedly connected to one side of the extrusion barrel (4) on the machine (1), the auxiliary feeding hopper (14) is used to add glass fiber raw materials, and is characterized in that an extrusion assembly is installed in the extrusion barrel (4), one end of the extrusion barrel (4) is connected to the material barrel (2), and the other end is fixedly connected to an extrusion die head; A cooling box (5) for modified plastic molding is fixedly mounted on the machine platform (1); the extrusion assembly comprises a rotating rod (41) and a moving rod (46); a mounting hole (411) is provided at one end of the rotating rod (41); the moving rod (46) is slidably located in the mounting hole (411); and a spiral plate (43) for material mixing and conveying is fixedly arrayed on the rotating rod (41); The material barrel (2) comprises a barrel body (21), a discharge pipe (26) for connecting to an extrusion barrel (4) is fixedly installed on one side of the barrel body (21), a first annular plate (22) and a second annular plate (23) for temporarily storing raw materials are fixedly installed inside the barrel body (21), the first annular plate (22) and the second annular plate (23) are both obliquely fixed to the inner wall of the barrel body (21), a top frame (24) is fixedly installed inside the barrel body (21), and an inclined plate (25) for stirring is fixedly connected below the top frame (24); A mixing assembly (3) is fixedly installed in the material barrel (2), and the mixing assembly (3) comprises a rotating shaft (31) rotatably installed on the driving box, one end of the rotating shaft (31) is fixedly connected to a bevel gear 1 (39), and the other end is fixedly connected to a collecting hopper (311), a discharge chute (312) is arranged at the bottom of the collecting hopper (311), an inclined plate (25) is slidably installed on the collecting hopper (311), and a bulk material plate (32) is fixedly installed on the rotating shaft (31); One of the bulk material plates (32) is located between the discharge trough (312) and the first annular plate (22), and the other bulk material plate (32) is located between the first annular plate (22) and the second annular plate (23). The rotating shaft (31) is fixedly connected to an array of L-shaped rods (33), and the L-shaped rods (33) are fixedly connected to inclined rods (34) for stirring the raw materials on the first annular plate (22); The rotating shaft (31) is fixedly connected in array with a lever (35) for stirring the raw materials on the second annular plate (23); a plurality of columns (36) are fixedly connected to the lever (35); a rotating block (37) is rotatably mounted on the column (36); a feeding screw (38) is fixedly mounted on the rotating shaft (31); the feeding screw (38) is located on one side of the discharge pipe (26); and a bevel gear 1 (39) cooperates with a bevel gear 2 (13); An annular arc groove (412) is provided in the mounting hole (411), a moving block (47) is fixedly connected to the moving rod (46), a spherical block (461) is fixedly connected to one end of the moving rod (46), and a stopper (48) is fixedly connected to the other end; a guide slider (49) is fixedly mounted on the moving rod (46), and the spherical block (461) cooperates with the annular arc groove (412); Two round rods (52) are rotatably mounted on the cooling box (5), a top frame (54) is fixedly mounted inside the cooling box (5), a cylinder (56) is fixedly mounted inside the top frame (54), a mounting block (561) is fixedly connected to the output end of the cylinder (56), a supporting rod (57) is rotatably connected to the mounting block (561), and a straight rod (562) is rotatably mounted on the mounting block (561); The top frame (54) is provided with a slide groove (551) in an array, a slide rod (552) is slidably installed in the slide groove (551), a spring (553) for connecting to the slide groove (551) is fixedly connected to one side of the slide rod (552), an arc surface block (554) is fixedly connected to one end of the slide rod (552), a straight rod (555) is fixedly connected to the arc surface block (554), and a support rod (57) is slidably connected to the arc surface block (554); A guide roller (58) is rotatably mounted on the straight rod 1 (562) and the straight rod 2 (555), the guide roller (58) is provided with a circular groove, one end of the support rod (57) is provided with a straight groove (59), a side rod (563) is fixedly connected to the top frame (54), the end of the side rod (563) is fixedly connected to a limit rod, and the limit rod cooperates with the straight groove (59); A material guide roller (521) is fixedly connected to the round rod (52), a material discharge plate is provided on one side of the material guide roller (521), a gear three (522) is fixedly connected to the round rod (52), two gear threes (522) cooperate for transmission, a motor two (520) for connecting and driving one round rod (52) to rotate is fixedly connected to one side of the cooling box (5), and a push rod (525) is fixedly connected to one end of the other round rod (52); A guide rail (523) is fixedly connected to one end of the cooling box (5), a second spring (524) is fixedly connected to the lower end of the guide rail (523), a driven rod (53) is slidably connected to the guide rail (523), the second spring (524) is fixedly connected to the driven rod (53), a shift plate (531) is fixedly connected to one side of the driven rod (53), and a cutter (532) is fixedly connected to the other side.

2. The production device of modified plastic composite masterbatch according to claim 1, characterized in that: The nucleating agent is one of polyvinyl cyclohexane, polyvinyl pentane, and ethylene / acrylate copolymer; The antioxidant is 3-(3,5-di-tert-butyl-4-hydroxyphenyl) propionate; The flame retardant is melamine cyanurate.

3. The production device of modified plastic composite masterbatch according to claim 1, characterized in that: A drive box is fixedly mounted on the machine (1) and located below the material barrel (2), a shaft is rotatably arranged in the drive box, a bevel gear 2 (13) and a gear 1 (12) are fixedly connected to the shaft, and a motor 1 (11) is fixedly mounted on the machine (1) and located on one side of the drive box.

4. The production device of modified plastic composite masterbatch according to claim 3, characterized in that: A heater is installed in the extrusion barrel (4), and a rotating rod (41) is rotatably installed in the extrusion barrel (4), one end of the rotating rod (41) away from the mounting hole (411) is connected to the output end of the motor 1 (11), and a gear 2 (42) is fixedly connected to the rotating rod (41), and the gear 2 (42) cooperates with the gear 1 (12), and the spacing of the spiral plates (43) gradually decreases; The rotating rod (41) is fixedly mounted with an arc-shaped blade 1 (44) and an arc-shaped blade 2 (45). The arc-shaped blade 1 (44) and the arc-shaped blade 2 (45) are staggeredly arranged on the rotating rod (41), and the arc-shaped blade 1 (44) and the arc-shaped blade 2 (45) are in opposite directions.

5. The production device of modified plastic composite masterbatch according to claim 4, characterized in that: The extrusion barrel (4) is provided with a material trough (40), a conical block is fixedly installed in the material trough (40), a flow channel is provided in the conical block, a guide rail (401) is fixedly provided in the flow channel, and a guide slide block (49) cooperates with the guide rail (401).

6. The production process of a modified plastic composite masterbatch production device according to any one of claims 1 to 5, characterized in that: The production process comprises the following steps: S1. Add raw materials Adding polypropylene, nucleating agent, maleic anhydride grafted polyethylene, antioxidant, flame retardant and glass fiber to the device respectively; S2, Extrusion After the raw materials are preliminarily mixed, they are mixed and heated in an extrusion barrel (4) to modify the polypropylene raw materials, and then glass fibers are added and extruded to compound the polypropylene to form a modified plastic; S3、 The modified plastic is extruded in S2 to form a wire, and the wire passes through a cooling box (5) to stably cool the wire; S4, Granulation The cooled wire is led out from the cooling box (5) and pelletized to obtain a modified plastic composite masterbatch.

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