An environmentally friendly flame-retardant nylon engineering plastic granulation equipment

Abstract

The invention belongs to the technical field of plastic granulation, and in particular to an environmentally friendly flame-retardant nylon engineering plastic granulation device, comprising a plastic heating extruder, wherein a cutting and molding component is arranged at the discharge end of the plastic heating extruder, and the cutting and molding component comprises a shell cover arranged at the discharge end of the plastic heating extruder; the extruded plastic can be conveniently cut, and the cut plastic particles can be cooled and dissipated at the same time, so as to facilitate the rapid molding of the plastic particles, and the molded plastic particles can be quickly discharged in coordination with an inclined guide plate in an inclined and shaking state, so as to facilitate the rapid replacement of an extrusion mold of a required size according to actual use needs, adjust the size of the produced plastic particles, improve the use range of the equipment, facilitate the scraping of plastic residues attached to the surface of the cutter, and avoid the high-temperature extruded plastic from adhering to the surface of the cutter to affect the cutting quality of the cutter, thereby improving the quality of the product.

Description

Technical Field

[0001] The invention belongs to the technical field of plastic granulation, and in particular relates to environmentally friendly flame-retardant nylon engineering plastic granulation equipment. Background Art

[0002] Plastic granulation is a process of plastic mechanical processing, which is to prepare various forms of plastics into uniform granules that are convenient for subsequent processing through processes such as melting, extrusion, and pelletizing.

[0003] Traditional granulation mostly involves crushing and hot-melting the plastic, and then granulating it through screw extrusion. During operation, when the size of the particles produced by the plastic granulator needs to be changed due to production needs, most of the existing methods require disassembly and replacement of the mold at the discharge port of the extruder, which is more troublesome. At the same time, when the cutting knife cuts the extruded plastic, the plastic is easily melted and adhered to the surface of the cutting knife due to the heating treatment of the plastic and the high-speed rotation of the cutting knife, which easily causes the cut plastic particles to be uneven in size, affecting the quality of the product.

[0004] In order to solve the above problems, the present application proposes an environmentally friendly flame-retardant nylon engineering plastic granulation equipment. Summary of the invention

[0005] To solve the problems raised in the above background technology. The present invention provides an environmentally friendly flame-retardant nylon engineering plastic granulation equipment, which can conveniently cut the extruded plastic, and at the same time dissipate heat and cool the cut plastic particles, so as to avoid the high-temperature plastic particles adhering to the surface of the inclined guide plate, so as to facilitate the rapid molding of plastic particles, and conveniently cooperate with the inclined guide plate in a tilted and shaking state to quickly discharge the molded plastic particles, so as to facilitate the rapid replacement of the extrusion mold of the required size according to actual use needs, and replace the extrusion mold with different granulation holes, so as to facilitate the adjustment of the size of the produced plastic particles, improve the use range of the equipment, and facilitate the scraping of the plastic residue attached to the surface of the cutter, so as to avoid the high-temperature extruded plastic adhering to the surface of the cutter, which will affect the cutting quality of the cutter with long-term use, resulting in uneven size of plastic particles, and improve the quality of the product.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an environmentally friendly flame-retardant nylon engineering plastic granulation device, comprising a plastic heating extruder;

[0007] The discharge end of the plastic heating extruder is provided with a cutting and molding assembly, which includes a shell cover arranged at the discharge end of the plastic heating extruder, multiple groups of cutters arranged in the shell cover, and a servo motor and a transmission shaft for driving the multiple groups of cutters to rotate and cut and mold the extruded plastic;

[0008] A mold replacement assembly is installed in the shell cover, and the mold replacement assembly includes a turntable rotatably connected to one side of the shell cover, a plurality of extrusion molds installed on the surface of the turntable, and an L-shaped fixing member, a spring, a wedge-shaped limiting slider and a fixing plate for controlling the rotation of the turntable to align any extrusion mold with the discharge end of the plastic heating extruder;

[0009] A tool cleaning assembly is installed in the shell cover, and the tool cleaning assembly includes a scraper sleeve arranged on the outside of the cutter, a connecting rod integrally formed on one side of the scraper sleeve, and a reciprocating screw rod and a reciprocating screw sleeve for controlling the scraper sleeve to move on the cutter surface to clean the cutter surface.

[0010] As a preferred environmentally friendly flame-retardant nylon engineering plastic granulation equipment of the present invention, a servo motor is fixedly installed on one side of the shell cover, the output shaft of the servo motor passes through the shell cover and is connected to a transmission shaft arranged in the shell cover, and the surface of the transmission shaft is annular and evenly fixed with multiple cutters.

[0011] As a preferred embodiment of the environmentally friendly flame-retardant nylon engineering plastic granulation equipment of the present invention, an inclined guide plate is hinged at the inner bottom of the shell cover, the inclined guide plate is inclined, and the inclined end extends out of the shell cover, and a counterweight block is installed on the bottom surface of the inclined guide plate.

[0012] As a preferred environmentally friendly flame-retardant nylon engineering plastic granulation equipment of the present invention, a cam is fixed in the shell cover and on the surface of the transmission shaft, the surface of the cam abuts against a U-shaped slide, the surface of the U-shaped slide has a fixed guide block sliding, the fixed guide block is fixedly installed on the inner wall of the shell cover, a pull rope is fixed to the bottom end of the U-shaped slide, one end of the pull rope is connected to the inclined guide plate, the pull rope sleeve is provided with a plurality of guide rings, and the plurality of guide rings are fixedly installed on the inner wall of the shell cover.

[0013] As a preferred embodiment of an environmentally friendly flame-retardant nylon engineering plastic granulation equipment of the present invention, a rotating frame is fixedly installed on the inner wall of the shell cover, and a connecting rotating rod is rotatably connected to the surface of the rotating frame. A refrigeration and heat dissipation fan is installed at one end of the connecting rotating rod, and a bevel gear 2 is installed at the other end of the connecting rotating rod. The surface of the bevel gear 2 is meshed with a bevel gear 1, and the bevel gear 1 is installed on the surface of the transmission shaft.

[0014] As a preferred environmentally friendly flame-retardant nylon engineering plastic granulation equipment of the present invention, one end of the transmission shaft is rotatably connected to one side of the turntable, a fixed disk is sleeved on the outer side of the transmission shaft, and the fixed disk is fixedly installed on one side of the turntable, an L-shaped fixing piece is fixedly installed on the surface of the transmission shaft, and a spring is installed in the groove opened on the surface of the L-shaped fixing piece, one end of the spring is abutted against one end of a wedge-shaped limiting slider slidably connected to the groove opened on the surface of the L-shaped fixing piece, and a plurality of wedge grooves compatible with the wedge-shaped limiting sliders are opened on the surface of the fixed disk.

[0015] As a preferred environmentally friendly flame-retardant nylon engineering plastic granulation equipment of the present invention, a rotating sealing gasket is provided at one end of the extrusion pipe of the plastic heating extruder, a fixed shaft is fixedly installed on one side of the turntable, a connecting sleeve is provided on the surface of the fixed shaft, a sliding pin is integrally formed in the connecting sleeve, a wavy spiral groove matching the sliding pin is provided on the surface of the fixed shaft, the connecting sleeve is slidably connected to the outside of the fixed shaft through the sliding pin and the wavy spiral groove, a liner is provided on the outside of the extrusion pipe of the plastic heating extruder, a sealing rubber pad is integrally formed on one side of the liner, and one side of the connecting sleeve is connected to the liner.

[0016] As a preferred environmentally friendly flame-retardant nylon engineering plastic granulation equipment of the present invention, a ring frame is fixed on the outside of the extrusion pipe of the plastic heating extruder, one end of the fixed shaft is rotatably connected to the surface of the ring frame, a guide rod is slidably connected in a through hole opened in the surface of the ring frame, one end of the guide rod is connected to a gasket, one side of the gasket is evenly distributed with multiple limit rods fixed in a ring shape, and corresponding limit slots are opened on one side surface of the turntable and located outside multiple groups of extrusion molds.

[0017] As a preferred environmentally friendly flame-retardant nylon engineering plastic granulation equipment of the present invention, a reciprocating screw rod is rotatably connected to the surface of the transmission shaft on the same side of each group of cutters, and a reciprocating wire sleeve is threadedly connected to the surface of the reciprocating wire rod, and one side of the reciprocating wire sleeve is connected to the connecting rod.

[0018] As a preferred environmentally friendly flame-retardant nylon engineering plastic granulation equipment of the present invention, a fixed frame is fixedly installed on one side of the reciprocating screw and located on the surface of the transmission shaft, and a rotating rod is rotatably connected to the surface of the fixed frame. A gear is installed at one end of the rotating rod, and an incomplete gear ring is meshed on the surface of the gear. The incomplete gear ring is fixed in the shell cover, and a bevel gear three is fixed on the other end of the rotating rod, and a bevel gear four is meshed on the surface of the bevel gear three. The bevel gear four is installed at one end of the reciprocating screw, and the reciprocating wire sleeve is slidably connected to one side surface of the fixed frame.

[0019] Compared with the prior art, the present invention has the following beneficial effects: the present invention has a scientific and reasonable structure and is safe and convenient to use:

[0020] 1. By setting the cutting and forming components, the shell cover, servo motor, transmission shaft and cutter are used in coordination, so that the environmentally friendly flame-retardant nylon engineering plastic can be crushed by the plastic heating extruder, and the plastic is heated to a molten state. The molten plastic heats the extrusion pipe of the extruder and is extruded. At the same time, the servo motor is controlled to rotate forward, so that the transmission shaft connected to the output shaft of the servo motor rotates, and then the cutter installed on the surface of the transmission shaft rotates, and the cutter can cut the extruded plastic to achieve the effect of granulation;

[0021] With the inclined guide plate set at an angle, the plastic particles cut by the cutter can fall onto the inclined guide plate, and the inclined setting can also facilitate the discharge of the plastic particles falling on the surface of the inclined guide plate;

[0022] The cam, U-shaped slide and pull rope are arranged in cooperation with each other, so that the U-shaped slide can move up and down reciprocatingly in the shell cover, and under the action of the pull rope, the inclined guide plate can be caused to shake up and down reciprocatingly in the shell cover, thereby facilitating the smooth discharge of the cut and formed plastic particles, and avoiding the accumulation of the formed plastic particles on the surface of the inclined guide plate;

[0023] The coordinated use of the cooling and heat dissipation fan, bevel gear one and bevel gear two structures allows the cooling and heat dissipation fan installed at the bottom of the connecting rod to rotate while the cutter cuts and shapes the extruded plastic, thereby dissipating the heat and cooling the cut plastic particles and preventing the high-temperature plastic particles from adhering to the surface of the inclined guide plate, so as to facilitate the rapid molding of the plastic particles and quickly discharge the molded plastic particles in conjunction with the inclined guide plate in a tilted and shaking state.

[0024] 2. By setting up a mold replacement component, through the coordinated use of the turntable, extrusion mold, L-shaped fixing piece, wedge-shaped limit slider and fixed disk and other structures, when the size of the plastic particles is adjusted according to production needs, the servo motor is controlled to reverse until the extrusion mold of the required size on the installed turntable surface corresponds to the discharge end of the plastic heating extruder, so that the extrusion mold of the required size can be quickly replaced according to actual use needs, so that the extrusion mold with different granulation holes can be replaced according to production needs, thereby facilitating the adjustment of the size of the produced plastic particles and improving the use range of the equipment;

[0025] The rotary sealing pad is provided so that the sealing effect between the discharge end of the plastic heating extruder and the rotary disk can be ensured when the turntable rotates to replace the required extrusion mold, thereby avoiding leakage of raw materials from the discharge end of the plastic heating extruder and the turntable when the required extrusion mold is replaced;

[0026] When the turntable rotates to replace the required extrusion die, the sealing rubber pad fixed on one side of the liner connected to the connecting sleeve can be pressed against one side surface of the turntable located outside the extrusion die, so as to further improve the sealing between the discharge end of the plastic heating extruder and the turntable, avoid leakage of raw materials, and ensure the stability of the plastic during the extrusion process;

[0027] While the sealing rubber pad is pressed against the surface of one side of the turntable outside the extrusion die for sealing, the limiting rod installed on one side of the pad can be inserted into the limiting slot to limit the turntable, so as to ensure that the extrusion die is in a locked state, thereby ensuring the stability of the plastic during the extrusion process and avoiding misalignment between the discharge end of the plastic heating extruder and the extrusion die.

[0028] 3. By setting up a tool cleaning component, through the coordinated use of the incomplete gear ring, gear, bevel gear three, bevel gear four, reciprocating screw, reciprocating wire sleeve and scraper sleeve and other structures, when one of the cutters completes a single cut, the gear corresponding to the side of this cutter can mesh with the incomplete gear ring, and under the coordinated action of the bevel gear three and bevel gear four, the reciprocating screw is caused to rotate, so that the reciprocating wire sleeve can reciprocate on the outside of the reciprocating screw, so that the reciprocating wire sleeve can drive the scraper sleeve to move on the outer surface of the cutter through the connecting rod, and the plastic residue attached to the surface of the cutter is scraped off to avoid the high-temperature extruded plastic from adhering to the surface of the cutter. With long-term use, the cutting quality of the cutter will be affected, resulting in uneven size of plastic particles, thereby improving the quality of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0030] Figure 1 It is a structural schematic diagram of the present invention;

[0031] Figure 2 For the present invention Figure 1 A side view structural schematic diagram of;

[0032] Figure 3 It is a schematic diagram of the internal partial structure of the shell cover in the present invention;

[0033] Figure 4 For the present invention Figure 3 A side view structural schematic diagram of;

[0034] Figure 5 It is a schematic diagram of the structure of the cutter, the transmission shaft, the inclined guide plate and the pull rope in the present invention;

[0035] Figure 6For the present invention Figure 5 A side view structural schematic diagram of;

[0036] Figure 7 It is a schematic diagram of the structure of the rotary sealing gasket, the rotating disk and the extrusion die in the present invention;

[0037] Figure 8 It is a schematic diagram of the structure of the gear, scraper sleeve, rotating rod and reciprocating wire sleeve in the present invention;

[0038] Fig. 9 It is a schematic diagram of the structure of the fixing frame, the reciprocating wire sleeve and the scraping sleeve in the present invention;

[0039] Fig.10 It is a schematic diagram of the structure of the L-shaped fixing member, the fixing plate and the spring in the present invention;

[0040] Fig.11 It is a schematic diagram of the structure of the turntable, the limiting slot and the ring frame in the present invention;

[0041] Fig.12 It is a schematic diagram of the structure of the ring frame, the sealing rubber pad and the fixed shaft in the present invention;

[0042] Fig.13 It is a schematic diagram of the structure of the guide rod, the limit rod and the liner in the present invention;

[0043] Fig.14 It is a schematic diagram of the structure of the gear, fixed plate, cutter and cam in the present invention;

[0044] Fig.15 It is a structural schematic diagram of the cam, the fixed guide block and the U-shaped slide in the present invention;

[0045] Fig.16 It is a schematic diagram of the structure of the turntable and the housing cover in the present invention;

[0046] Fig.17 For the present invention Figure 3 A schematic diagram of the structure enlargement at point A;

[0047] Fig.18 For the present invention Fig.13 A schematic diagram of the structure at B in FIG.

[0048] In the figure:

[0049] 1. Plastic heating extruder; 2. Cutting and molding components; 21. Shell; 22. Servo motor; 23. Drive shaft; 24. Cutter; 25. Bevel guide plate; 26. Pull rope; 27. Guide ring; 28. Bevel gear 1; 29. ​​Bevel gear 2; 210. Connecting rod; 211. Refrigeration and cooling fan; 212. Rotating frame; 213. U-shaped slide; 214. Cam; 215. Fixed guide block; 216. Counterweight; 3. Mold replacement components; 31. Rotating plate; 32. Extrusion mold; 33. Rotating seal pad; 34. L-shaped fixing piece; 35. Spring; 36, wedge-shaped limit slider; 37, fixed plate; 38, fixed shaft; 39, wavy spiral groove; 310, connecting sleeve; 311, sliding pin; 312, ring frame; 313, gasket; 314, limit plug rod; 315, sealing pad; 316, guide rod; 317, limit slot; 4, tool cleaning assembly; 41, incomplete gear ring; 42, gear; 43, rotating rod; 44, fixed frame; 45, bevel gear three; 46, bevel gear four; 47, reciprocating screw rod; 48, reciprocating screw sleeve; 49, connecting rod; 410, scraper sleeve. DETAILED DESCRIPTION

[0050] 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.

[0051] Example: Figure 1-Figure 18 As shown, the present invention provides a technical solution, an environmentally friendly flame-retardant nylon engineering plastic granulation equipment, including a plastic heating extruder 1;

[0052] The discharge end of the plastic heating extruder 1 is provided with a cutting and molding assembly 2, which includes a housing 21, a servo motor 22, a transmission shaft 23, a cutter 24, an inclined guide plate 25, a pull rope 26, a guide ring 27, a bevel gear 1 28, a bevel gear 29, a connecting rod 210, a cooling fan 211, a rotating frame 212, a U-shaped slide 213, a cam 214, a fixed guide block 215, and a counterweight block 216;

[0053] A shell cover 21 is provided at the discharge end of the plastic heating extruder 1, and a servo motor 22 is fixedly installed on one side of the shell cover 21. The output shaft of the servo motor 22 passes through the shell cover 21 and is connected to a transmission shaft 23 arranged in the shell cover 21. The surface of the transmission shaft 23 is annular and evenly fixed with multiple cutters 24.

[0054] An inclined guide plate 25 is hingedly connected to the inner bottom of the shell cover 21 . The inclined guide plate 25 is inclined, and the inclined end extends out of the shell cover 21 . A counterweight block 216 is installed on the bottom surface of the inclined guide plate 25 .

[0055] A cam 214 is fixed inside the shell cover 21 and on the surface of the transmission shaft 23. The surface of the cam 214 abuts against a U-shaped slide 213. A fixed guide block 215 slides on the surface of the U-shaped slide 213. The fixed guide block 215 is fixedly installed on the inner wall of the shell cover 21. A pull rope 26 is fixed to the bottom end of the U-shaped slide 213. One end of the pull rope 26 is connected to the inclined guide plate 25. The pull rope 26 is provided with a plurality of guide rings 27. The plurality of guide rings 27 are all fixedly installed on the inner wall of the shell cover 21.

[0056] A rotating frame 212 is fixedly installed on the inner wall of the shell cover 21, and a connecting rod 210 is rotatably connected to the surface of the rotating frame 212. A cooling fan 211 is installed at one end of the connecting rod 210, and a bevel gear 29 is installed at the other end of the connecting rod 210. The surface of the bevel gear 29 is meshed with a bevel gear 1 28, and the bevel gear 1 28 is installed on the surface of the transmission shaft 23.

[0057] A mold replacement assembly 3 is installed in the shell cover 21, and the mold replacement assembly 3 includes a turntable 31, an extrusion mold 32, a rotary sealing gasket 33, an L-shaped fixing member 34, a spring 35, a wedge-shaped limiting slider 36, a fixing plate 37, a fixing shaft 38, a wavy spiral groove 39, a connecting sleeve 310, a sliding pin 311, a ring frame 312, a gasket 313, a limiting plug rod 314, a sealing rubber gasket 315, a guide rod 316, and a limiting slot 317;

[0058] A turntable 31 is rotatably connected to one side of the shell cover 21, and multiple groups of extrusion dies 32 are installed on the surface of the turntable 31. One end of the transmission shaft 23 is rotatably connected to one side of the turntable 31. A fixed disk 37 is sleeved on the outer side of the transmission shaft 23, and the fixed disk 37 is fixedly installed on one side of the turntable 31. An L-shaped fixing part 34 is fixedly installed on the surface of the transmission shaft 23, and a spring 35 is installed in the groove opened on the surface of the L-shaped fixing part 34. One end of the spring 35 abuts against one end of a wedge-shaped limiting slider 36 slidably connected to the groove opened on the surface of the L-shaped fixing part 34, and a plurality of wedge grooves compatible with the wedge-shaped limiting slider 36 are opened on the surface of the fixed disk 37.

[0059] A rotating sealing gasket 33 is provided at one end of the extrusion pipe of the plastic heating extruder 1, a fixed shaft 38 is fixedly installed on one side of the turntable 31, a connecting sleeve 310 is sleeved on the surface of the fixed shaft 38, a sliding pin 311 is integrally formed in the connecting sleeve 310, a wavy spiral groove 39 adapted to the sliding pin 311 is opened on the surface of the fixed shaft 38, the connecting sleeve 310 is slidably connected to the outside of the fixed shaft 38 through the sliding pin 311 and the wavy spiral groove 39, a liner 313 is sleeved on the outside of the extrusion pipe of the plastic heating extruder 1, a sealing pad 315 is integrally formed on one side of the liner 313, and one side of the connecting sleeve 310 is connected to the liner 313.

[0060] A ring frame 312 is fixed to the outside of the extrusion pipe of the plastic heating extruder 1, one end of the fixed shaft 38 is rotatably connected to the surface of the ring frame 312, a guide rod 316 is slidably connected in a through hole opened on the surface of the ring frame 312, one end of the guide rod 316 is connected to a gasket 313, and a plurality of limiting plug rods 314 are evenly distributed in a ring shape and fixed on one side of the gasket 313, and corresponding limiting slots 317 are opened on one side surface of the turntable 31 and outside the multiple groups of extrusion molds 32.

[0061] A tool cleaning assembly 4 is installed in the shell cover 21, and the tool cleaning assembly 4 includes an incomplete gear ring 41, a gear 42, a rotating rod 43, a fixing frame 44, a helical gear three 45, a helical gear four 46, a reciprocating screw rod 47, a reciprocating screw sleeve 48, a connecting rod 49, and a scraping sleeve 410;

[0062] A scraper sleeve 410 is provided on the outer side of the cutter 24, and a connecting rod 49 is integrally formed on one side of the scraper sleeve 410. A reciprocating screw rod 47 is rotatably connected to the same side of each group of cutters 24 and located on the surface of the transmission shaft 23. A reciprocating wire sleeve 48 is threadedly connected to the surface of the reciprocating wire sleeve 48, and one side of the reciprocating wire sleeve 48 is connected to the connecting rod 49.

[0063] A fixing frame 44 is fixedly installed on one side of the reciprocating screw rod 47 and located on the surface of the transmission shaft 23. A rotating rod 43 is rotatably connected to the surface of the fixing frame 44. A gear 42 is installed at one end of the rotating rod 43. An incomplete gear ring 41 is meshed on the surface of the gear 42. The incomplete gear ring 41 is fixedly installed in the shell cover 21. A bevel gear three 45 is fixed to the other end of the rotating rod 43. A bevel gear four 46 is meshed on the surface of the bevel gear three 45. The bevel gear four 46 is installed at one end of the reciprocating screw rod 47. The reciprocating wire sleeve 48 is slidably connected to the surface of one side of the fixing frame 44.

[0064] The working principle and use process of the present invention are as follows: when in use, the environmentally friendly flame-retardant nylon engineering plastic is put into the chassis through the feed port of the plastic heating extruder 1, and a crushing mechanism is used to crush the large pieces of environmentally friendly flame-retardant nylon engineering plastic, so that the plastic is fully crushed and the size of the plastic is uniform. The crushed plastic is further heated by the heating device in the plastic heating extruder 1, so that the plastic is heated to a molten state. The molten plastic is extruded by the extrusion pipe of the heating extruder 1, and the servo motor 22 is controlled to rotate forward, so that the transmission shaft 23 connected to the output shaft of the servo motor 22 rotates, and then the cutter 24 installed on the surface of the transmission shaft 23 can rotate, and the cutter 24 can cut the extruded plastic to achieve the effect of granulation;

[0065] The inclined guide plate 25 is arranged to be inclined so that the plastic particles cut by the cutter 24 can fall onto the inclined guide plate 25. At the same time, the inclined setting can facilitate the discharge of the plastic particles falling on the surface of the inclined guide plate 25.

[0066] When the transmission shaft 23 rotates, the cam 214 installed on the surface of the transmission shaft 23 can also rotate, thereby causing the cam 214 to reciprocate and push the U-shaped slide 213, so that the U-shaped slide 213 can reciprocate and move up and down in the shell cover 21, thereby causing the pull rope 26 connected to the bottom end of the U-shaped slide 213 to pull the inclined guide plate 25, and cooperate with the counterweight block 216 to cause the inclined guide plate 25 to reciprocate and shake up and down in the shell cover 21. Compared with the traditional static discharge method, this shaking discharge method is more convenient for the smooth discharge of the cut and formed plastic particles, and avoids the accumulation of the formed plastic particles on the surface of the inclined guide plate 25.

[0067] When the transmission shaft 23 rotates, the bevel gear 1 28 mounted on the surface of the transmission shaft 23 can also rotate. At this time, the bevel gear 29 meshing with the bevel gear 1 28 can drive the connecting rod 210 to rotate on the surface of the rotating frame 212, thereby enabling the cooling fan 211 mounted at the bottom of the connecting rod 210 to rotate, so as to dissipate heat and cool the cut plastic particles. Compared with the traditional self-cooling cooling method, this method can, on the one hand, prevent the high-temperature plastic particles from adhering to the surface of the inclined guide plate 25 and causing the accumulation of materials, and on the other hand, facilitate the rapid molding of the plastic particles, and facilitate the rapid discharge of the molded plastic particles with the inclined guide plate 25 in the tilted and shaking state;

[0068] When the size of the plastic particles is adjusted according to production needs, the servo motor 22 is controlled to reverse, and at this time, the wedge-shaped limit slider 36 elastically connected to the L-shaped fixing member 34 by the spring 35 will be stuck in the wedge groove opened on the surface of the fixing plate 37, and the fixing plate 37 drives the turntable 31 to rotate on one side of the shell cover 21 until the extrusion die 32 of the required size on the surface of the installed turntable 31 corresponds to the discharge end of the plastic heating extruder 1, so that the extrusion die 32 of the required size can be quickly replaced according to actual use needs, so that the extrusion die 32 of different granulation holes can be replaced according to production needs. The extruder 32 is convenient for adjusting the size of the produced plastic particles, and the use range of the equipment is improved. When the servo motor 22 rotates forward to cut the extruded plastic, the wedge-shaped limit slider 36 will only slide on the surface of the fixed disk 37, and the wedge-shaped limit slider 36 will not be stuck in the wedge groove opened on the surface of the fixed disk 37. At the same time, the shell cover 21 will not rotate on one side of the shell cover 21, which can ensure the stability of the plastic when it is extruded through the corresponding extrusion die 32. Compared with the traditional disassembly replacement method, this replacement direction is obviously more convenient and quick, without stopping the machine, and the production efficiency can also be improved.

[0069] The rotary seal pad 33 is provided so that the turntable 31 can ensure the sealing effect between the discharge end of the plastic heating extruder 1 and the turntable 31 when the desired extrusion die 32 is rotated to replace the desired extrusion die 32, thereby preventing the raw material from leaking from the discharge end of the plastic heating extruder 1 and the turntable 31 when the desired extrusion die 32 is replaced;

[0070] When the turntable 31 rotates to replace the required extrusion mold 32, it can also make the fixed shaft 38 installed on one side of the turntable 31 rotate. At the same time, the connecting sleeve 310 sleeved on the outer side of the fixed shaft 38 can slide reciprocatingly on the outer side of the fixed shaft 38 under the cooperation of the sliding pin 311 and the wavy spiral groove 39. When rotating, when the discharge end of the plastic heating extruder 1 is between two adjacent extrusion molds 32, the connecting sleeve 310 can slide to the extreme position of one end of the fixed shaft 38. When the discharge end of the plastic heating extruder 1 is opposite to the extrusion mold 32, the connecting sleeve 310 can slide to the extreme position of the other end of the fixed shaft 38. At the same time, the sealing rubber pad 315 fixed on one side of the gasket 313 connected to the connecting sleeve 310 can be pressed against the surface of one side of the turntable 31 located outside the extrusion mold 32, so as to further improve the sealing between the discharge end of the plastic heating extruder 1 and the turntable 31, avoid leakage of raw materials, and ensure the stability of the plastic during the extrusion process.

[0071] When the connecting sleeve 310 drives the gasket 313 to move back and forth, the guide rod 316 fixed on one side of the gasket 313 can slide and guide in the through hole opened on the surface of the ring frame 312, so as to improve the stability of the gasket 313 during movement. At the same time, the sealing rubber pad 315 fixed on one side of the gasket 313 abuts against the surface of one side of the turntable 31 located outside the extrusion mold 32 for sealing. At the same time, the limiting plug rod 314 installed on one side of the gasket 313 can be inserted into the limiting slot 317 to limit the turntable 31, so as to ensure that the extrusion mold 32 is in a locked state, so as to ensure the stability of the plastic during the extrusion process and avoid misalignment between the discharge end of the plastic heating extruder 1 and the extrusion mold 32.

[0072] When the transmission shaft 23 rotates to drive the cutter 24 to cut and shape the plastic, the fixed frame 44 fixedly installed on the outside of the transmission shaft 23 rotates accordingly. When one of the cutters 24 completes a single cut, the gear 42 corresponding to the side of the cutter 24 can mesh with the incomplete gear ring 41, thereby driving the rotating rod 43 to rotate, and under the cooperation of the set bevel gear three 45 and bevel gear four 46, the reciprocating screw rod 47 is driven to rotate, so that the reciprocating screw sleeve 48 can reciprocate on the outside of the reciprocating screw rod 47, so that the reciprocating screw sleeve 48 can drive the scraper sleeve 410 to move on the outer surface of the cutter 24 through the connecting rod 49, and scrape off the plastic residue attached to the surface of the cutter 24, so as to avoid the high-temperature extruded plastic from adhering to the surface of the cutter 24. With long-term use, the cutting quality of the cutter 24 will be affected, resulting in uneven size of plastic particles, thereby improving the quality of the product;

[0073] It should be noted that: during the process of cutting the extruded plastic by the cutter 24, the scraper sleeve 410 is at the end of the cutter 24, which does not affect the normal cutting and molding operation of the extruded plastic by the cutter 24. At this time, the gear 42 does not mesh with the teeth on the surface of the incomplete gear ring 41. After one of the cutters 24 completes a single cut, the gear 42 will mesh with the teeth on the surface of the incomplete gear ring 41, so that the scraper sleeve 410 moves and cleans the surface of the cutter 24, and when the gear 42 moves from the initial position of the teeth on the surface of the incomplete gear ring 41 to the end of the teeth on the surface of the incomplete gear ring 41, the reciprocating wire sleeve 48 on the surface of the reciprocating screw rod 47 can make the scraper sleeve 410 slide back and forth once on the surface of the cutter 24.

[0074] It should be noted that: according to actual needs, there can be multiple groups of extrusion dies 32 on the surface of the turntable 31 (with different sizes of material openings), and the single-end pole positions of the wavy spiral grooves 39 on the surface of the fixed shaft 38 should be the same as the number of extrusion dies 32. Taking this design as an example, the extrusion dies 32 are presented in three groups, so the single-end pole positions of the wavy spiral grooves 39 opened on the surface of the fixed shaft 38 are also three, which can ensure that when the turntable 31 rotates one circle, the connecting sleeve 310 can slide back and forth three times on the outside of the fixed shaft 38.

[0075] It should be noted that heat dissipation holes (not shown in the figure) are provided on the surface of the shell cover 21 .

[0076] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An environmentally friendly flame-retardant nylon engineering plastic granulation device, comprising a plastic heating extruder (1); Features: The discharge end of the plastic heating extruder (1) is provided with a cutting and molding assembly (2), the cutting and molding assembly (2) comprising a housing (21) provided at the discharge end of the plastic heating extruder (1), a plurality of groups of cutters (24) provided in the housing (21), and a servo motor (22) and a transmission shaft (23) for driving the plurality of groups of cutters (24) to rotate and cut and mold the extruded plastic; a servo motor (22) is fixedly mounted on one side of the housing (21), and the servo motor (22) is ) passes through the shell cover (21) and is connected to a transmission shaft (23) disposed in the shell cover (21); a plurality of cutters (24) are evenly fixed on the surface of the transmission shaft (23) in an annular shape; an inclined guide plate (25) is hingedly connected to the inner bottom of the shell cover (21); the inclined guide plate (25) is inclined and the inclined end extends out of the shell cover (21); a counterweight (216) is installed on the bottom surface of the inclined guide plate (25); a counterweight (216) is fixed on the surface of the transmission shaft (23) in the shell cover (21) A cam (214) is provided, the surface of the cam (214) abuts against a U-shaped slide (213), a fixed guide block (215) is slidably provided on the surface of the U-shaped slide (213), the fixed guide block (215) is fixedly mounted on the inner wall of the shell cover (21), a pull rope (26) is fixed at the bottom end of the U-shaped slide (213), one end of the pull rope (26) is connected to the inclined guide plate (25), a sleeve of the pull rope (26) is provided with a plurality of guide rings (27), and the plurality of guide rings (27) are fixedly mounted. Mounted on the inner wall of the shell cover (21); a rotating frame (212) is fixedly mounted on the inner wall of the shell cover (21); a connecting rod (210) is rotatably connected to the surface of the rotating frame (212); a cooling fan (211) is mounted on one end of the connecting rod (210); a bevel gear 2 (29) is mounted on the other end of the connecting rod (210); a bevel gear 1 (28) is meshed with the surface of the bevel gear 2 (29); and the bevel gear 1 (28) is mounted on the surface of the transmission shaft (23); A mold replacement assembly (3) is installed in the shell cover (21), and the mold replacement assembly (3) includes a turntable (31) rotatably connected to one side of the shell cover (21), a plurality of groups of extrusion molds (32) installed on the surface of the turntable (31), and an L-shaped fixing member (34), a spring (35), a wedge-shaped limiting slider (36) and a fixing plate (37) for controlling the rotation of the turntable (31) so that any extrusion mold (32) is aligned with the discharge end of the plastic heating extruder (1); A tool cleaning assembly (4) is installed in the shell cover (21), and the tool cleaning assembly (4) comprises a scraper sleeve (410) arranged outside the cutter (24), a connecting rod (49) integrally formed on one side of the scraper sleeve (410), and a reciprocating screw rod (47) and a reciprocating screw sleeve (48) for controlling the scraper sleeve (410) to move on the surface of the cutter (24) to clean the surface of the cutter (24).

2. The environmentally friendly flame-retardant nylon engineering plastic granulation equipment according to claim 1 is characterized by: One end of the transmission shaft (23) is rotatably connected to one side of the rotating disk (31); a fixed disk (37) is sleeved on the outer side of the transmission shaft (23); the fixed disk (37) is fixedly mounted on one side of the rotating disk (31); an L-shaped fixing member (34) is fixedly mounted on the surface of the transmission shaft (23); a spring (35) is mounted in a groove provided on the surface of the L-shaped fixing member (34); one end of the spring (35) abuts against one end of a wedge-shaped limiting slider (36) slidably connected to the groove provided on the surface of the L-shaped fixing member (34); and a plurality of wedge grooves matching the wedge-shaped limiting sliders (36) are provided on the surface of the fixing disk (37).

3. The environmentally friendly flame-retardant nylon engineering plastic granulation equipment according to claim 1 is characterized by: A rotary sealing pad (33) is provided at one end of the extrusion pipe of the plastic heating extruder (1); a fixed shaft (38) is fixedly mounted on one side of the turntable (31); a connecting sleeve (310) is sleeved on the surface of the fixed shaft (38); a sliding pin (311) is integrally formed in the connecting sleeve (310); a wavy spiral groove (39) matching the sliding pin (311) is provided on the surface of the fixed shaft (38); the connecting sleeve (310) is slidably connected to the outside of the fixed shaft (38) via the sliding pin (311) and the wavy spiral groove (39); a liner (313) is sleeved on the outside of the extrusion pipe of the plastic heating extruder (1); a sealing rubber pad (315) is integrally formed on one side of the liner (313); and one side of the connecting sleeve (310) is connected to the liner (313).

4. The environmentally friendly flame-retardant nylon engineering plastic granulation equipment according to claim 3 is characterized by: A ring frame (312) is fixed on the outside of the extrusion pipe of the plastic heating extruder (1), one end of the fixed shaft (38) is rotatably connected to the surface of the ring frame (312), a guide rod (316) is slidably connected in a through hole opened on the surface of the ring frame (312), one end of the guide rod (316) is connected to a liner (313), one side of the liner (313) is evenly distributed with a plurality of limit rods (314) fixed thereto in an annular shape, and a corresponding limit slot (317) is opened on one side surface of the turntable (31) and located outside the plurality of extrusion dies (32).

5. The environmentally friendly flame-retardant nylon engineering plastic granulation equipment according to claim 1 is characterized by: A reciprocating screw rod (47) is rotatably connected to the surface of the transmission shaft (23) on the same side of each group of cutters (24), a reciprocating screw rod (47) is threadedly connected to the surface of the reciprocating screw rod (47), and one side of the reciprocating screw rod (48) is connected to a connecting rod (49).

6. The environmentally friendly flame-retardant nylon engineering plastic granulation equipment according to claim 1 is characterized by: A fixing frame (44) is fixedly mounted on one side of the reciprocating screw rod (47) and located on the surface of the transmission shaft (23); a rotating rod (43) is rotatably connected to the surface of the fixing frame (44); a gear (42) is mounted on one end of the rotating rod (43); an incomplete gear ring (41) is meshed on the surface of the gear (42); the incomplete gear ring (41) is fixedly mounted in the shell cover (21); a bevel gear three (45) is fixed on the other end of the rotating rod (43); a bevel gear four (46) is meshed on the surface of the bevel gear three (45); the bevel gear four (46) is mounted on one end of the reciprocating screw rod (47); and the reciprocating wire sleeve (48) is slidably connected to a surface of one side of the fixing frame (44).

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