Solid polyamide resin particle preparation device

Abstract

The invention discloses a solid polyamide resin particle preparation device, which relates to the technical field of solid polyamide resin particle preparation, and comprises a conveying cylinder. According to the solid polyamide resin particle preparation device, the extrusion die is composed of the outer extrusion die, the middle layer and the attaching extrusion die, solid resin attached to the attaching extrusion die is gradually increased along with continuous granulation operation, at the moment, a second hydraulic cylinder is adjusted to drive a lifting connecting rod to ascend, and then the solid polyamide resin particles are prepared. After an extrusion hole in the lower portion of the attaching extrusion die is overlapped with an extrusion hole in the middle layer, a third hydraulic cylinder is adjusted to drive an annular scraping piece to penetrate through an extrusion hole in the upper portion of the attaching extrusion die, an adsorption pump is started, the annular scraping piece scrapes off attachments in the extrusion hole, and then the attaching extrusion die is lifted up; and the adsorption pump collects the fallen impurities through the negative pressure pipe, so that cleaning of the attached extrusion die is completed, and in the cleaning process of the attached extrusion die, the effect that extrusion operation is continuously carried out is achieved.

Description

Technical Field

[0001] The invention relates to the technical field of solid polyamide resin granulation, in particular to a solid polyamide resin granulation manufacturing device. Background Art

[0002] Solid amine resin refers to a thermosetting resin obtained by polycondensation of monomers containing amino or amide groups with aldehydes (mainly formaldehyde). Due to market demand, it needs to be manufactured into granules by a granulation device.

[0003] During the use of the existing solid polyamide resin pellet making device, when the resin in a molten state passes through the extrusion die, a small amount of molten resin gradually adheres to the extrusion die near the conveying cylinder. As the granulation process continues, more and more attachments are attached to the extrusion die, and the die is cooled and shaped, which will affect the shape and size of the subsequent extruded particles. If the extrusion die is replaced, it is relatively cumbersome and affects the granulation process, thereby reducing the use value of the pellet making device. Summary of the invention

[0004] The invention discloses a solid polyamide resin pellet making device, which aims to solve the technical problem that in the existing solid polyamide resin pellet making device, when the resin in a molten state passes through an extrusion die during use, a trace amount of molten resin gradually adheres to the extrusion die near a conveying cylinder, and as the granulation process continues, more and more attachments are formed on the extrusion die, which will affect the shape and size of the subsequent extruded particles. If the extrusion die is replaced, it is relatively cumbersome and affects the granulation process.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A solid polyamide resin particle manufacturing device comprises a conveying cylinder, one end of which is provided with an extrusion assembly, and the extrusion assembly comprises an external extrusion die, both sides of the external extrusion die are fixedly connected with connecting rods, and both sides of the conveying cylinder close to the connecting rods are fixedly connected with limit rails, the interiors of the two limit rails are slidably connected with limit sliders, one side of the two limit sliders is fixedly connected with a shock-absorbing spring rod, one end of the shock-absorbing spring rod is fixedly connected to one side of the connecting rod, the end of the limit rail is fixedly connected with an end block, the side of the end block facing the shock-absorbing spring rod is fixedly connected with a hydraulic cylinder four, and the output of the hydraulic cylinder four A pressure block is fixedly connected to the end, and the pressure block is in contact with the limit slider. An intermediate layer is fixedly connected to the side of the outer extrusion die facing the conveying cylinder. A heating groove is opened inside the intermediate layer, and an electric heating tube 1 is fixedly connected to the heating groove at an equal distance. The tops of the two connecting rods are fixedly connected to hydraulic cylinder 2, and the output ends of the two hydraulic cylinders 2 are fixedly connected to lifting connecting rods. The ends of the two lifting connecting rods are fixedly connected to the same fitting extrusion die. The height of the fitting extrusion die is twice the height of the outer extrusion die. A docking hole is opened on the side of the conveying cylinder close to the fitting extrusion die, and the fitting extrusion die is in contact with the conveying cylinder.

[0007] By providing an extrusion assembly, the extrusion die is composed of three parts: an outer extrusion die, an intermediate layer and a bonding extrusion die. As the granulation operation continues, the solid resin attached to the bonding extrusion die gradually increases. At this time, the second hydraulic cylinder is adjusted to drive the lifting connecting rod to rise, thereby lifting the bonding extrusion die in the working process. When the extrusion hole below the bonding extrusion die overlaps with the extrusion hole on the intermediate layer, the third hydraulic cylinder is then adjusted to drive the annular scraper to pass through the extrusion hole above the bonding extrusion die, and the adsorption pump is started. The annular scraper scrapes off the attachments in the extrusion hole, and the adsorption pump collects the impurities that fall off through the negative pressure pipe, thereby completing the cleaning of the bonding extrusion die. During the cleaning process, the extrusion operation continues, thereby improving the granulation effect and work efficiency of the particle making device.

[0008] In a preferred solution, the top and bottom of the conveying cylinder are fixedly connected to mounting frames, and both ends of the two mounting frames facing the laminating extrusion die are fixedly connected to hydraulic cylinder three, the output ends of the two hydraulic cylinders three located on the same mounting frame are fixedly connected to the same pushing frame, and the ends of the pushing frame are fixedly connected to a connecting plate, and the connecting plate has connecting holes equidistantly opened on the side facing the laminating extrusion die, and a negative pressure tube is fixedly connected to the inside of each connecting hole.

[0009] In a preferred solution, each open end of the negative pressure tube is fixedly connected to a ring-shaped scraper, and the ring-shaped scraper has the same inner diameter as the extrusion hole on the laminating extrusion die, one side of the connecting plate is fixedly connected to an adsorption pump, the adsorption end of the adsorption pump is connected to the inside of the connecting plate through a pipeline, the conveying cylinder is fixedly connected to a collecting box near the top and bottom of the mounting frame, the conveying end of the adsorption pump is fixedly connected to a conveying pipe, one end of the conveying pipe is inserted into the inside of the collecting box, the conveying cylinder is fixedly connected to a pipe sleeve between the connecting plate and the collecting box, and the conveying pipe passes through the pipe sleeve.

[0010] In a preferred embodiment, the conveying cylinder is fixedly connected to a motor frame on the side away from the laminating extrusion die, and the interior of the motor frame is fixedly connected to a driving motor, the output shaft of the driving motor is fixedly connected to the conveying shaft through a coupling, and the outer wall of the conveying shaft is fixedly connected to a spiral conveying blade.

[0011] In a preferred embodiment, a feed hole is provided at the top of the conveying cylinder near the motor frame, and a feed pipe is fixedly connected to the inside of the feed hole, a heating cover is fixedly connected to the inner wall below the feed pipe, two electric heating tubes are fixedly connected to the inside of the heating cover at equal distances, two grounding seats are fixedly connected to the bottom of the conveying cylinder, and guide plates are fixedly connected to the top inner wall and the bottom inner wall of the conveying cylinder near the laminating extrusion mold.

[0012] In a preferred solution, a support plate is fixedly connected to one side of one of the grounding seats, and a liquid storage frame is fixedly connected to the top of the support plate. The interior of the liquid storage frame is filled with coolant, and a material discharge assembly is provided inside the liquid storage frame.

[0013] In a preferred embodiment, the material discharge assembly includes a material guide plate, and a row hole is opened on one side of the liquid storage frame, the guide plate is fixedly connected to the bottom inner wall of the row hole, the inclined surface of the material guide plate is evenly spaced with liquid holes, and a partition plate is evenly fixedly connected to one side of the material guide plate close to the top, and a mounting block is fixedly connected to the opposite side of each adjacent two partition plates, a buffer spring rod is fixedly connected to the top of the mounting block, and a buffer material connecting block is fixedly connected to the top of the buffer spring rod, and the buffer material connecting block is located directly below the extrusion hole of the external extrusion mold.

[0014] By providing a feeding assembly, after the resin is extruded and pelletized, it falls between the partition plates under the action of its own gravity. The partition plates divide the resin that has just been pelletized to prevent them from contacting and sticking to each other. When the resin particles fall onto the buffer receiving block, the buffer spring rods below them buffer the impact of their fall, protect the resin particles, and prevent them from excessive deformation. When they move from the buffer receiving block to the guide plate, they gradually slide downward. During the sliding process, the coolant attached to the surface gradually detaches and falls into the liquid storage frame below through the liquid hole, thereby reducing the loss of coolant.

[0015] In a preferred embodiment, the conveying cylinder is provided with a cutting assembly at the external extrusion die, and the cutting assembly includes a cutter, side rods are fixedly connected to both sides of the conveying cylinder, the opposite sides of the two side rods are fixedly connected to the same top plate, the top of the top plate is fixedly connected to two hydraulic cylinders one, the output ends of the two hydraulic cylinders one are fixedly connected to the same knife plate, and the cutter is fixedly connected to the bottom of the knife plate.

[0016] In a preferred embodiment, the knife plate is fixedly connected to a cooling nozzle near the bottom of the cutter, and cooling holes are opened at equal distances on the outer wall of the cooling nozzle facing the cutter, a pump ring frame is fixedly connected to one side of the liquid storage frame, an infusion pump is fixedly connected to the inside of the pump ring frame, the infusion end of the infusion pump is fixedly connected to an infusion tube, one end of the infusion tube is inserted into the interior of the cooling nozzle, the liquid inlet end of the infusion pump is fixedly connected to a liquid extraction tube, and the open end of the liquid extraction tube is inserted into the interior of the liquid storage frame.

[0017] By providing a pelletizing assembly, after the resin particles are extruded, the hydraulic cylinder is adjusted to drive the cutter to perform pelletizing operation. During the pelletizing process, the infusion pump is started, and the infusion pump guides the coolant in the liquid storage frame into the cooling nozzle, and sprays it on the surface of the cutter through the cooling hole. When the cutter pelletizes, part of the coolant flows to the resin particles to accelerate the cooling of the resin particles. At the same time, the air compressor is started, and the air compressor guides the compressed gas filtered by the air filter cartridge into the jet pipe. Part of the compressed gas rushes to the coolant sprayed on the cutter, and the compressed gas blown obliquely accelerates the flow of the coolant. The other part of the compressed gas is directly blown to the resin particles below to further increase the cooling speed.

[0018] In a preferred embodiment, the bottom of the knife plate is fixedly connected to a jet pipe, and the outer wall of the jet pipe facing obliquely downward and facing the cutter is provided with jet holes, the top of the knife plate is fixedly connected to an air compressor, the air delivery end of the air compressor is connected to the inside of the jet pipe through a pipeline, and the air inlet end of the air compressor is connected to an air filter cartridge through a pipeline.

[0019] As can be seen from the above, the solid polyamide resin particle making device provided by the present invention has the advantages of improving the extrusion mold, which is composed of three parts: an outer extrusion mold, an intermediate layer and a bonding extrusion mold. As the granulation operation continues, the solid resin attached to the bonding extrusion mold gradually increases. At this time, the second hydraulic cylinder is adjusted to drive the lifting connecting rod to rise, thereby lifting the bonding extrusion mold during the working process. When the extrusion hole below the bonding extrusion mold overlaps with the extrusion hole on the intermediate layer, the third hydraulic cylinder is then adjusted to drive the annular scraper to pass through the extrusion hole above the bonding extrusion mold, and the adsorption pump is started. The annular scraper scrapes off the attachments in the extrusion hole, and the adsorption pump collects the impurities that fall off through the negative pressure pipe, thereby completing the cleaning of the bonding extrusion mold. During the cleaning process, the extrusion operation continues to have a technical effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 The present invention provides a schematic diagram of the overall structure of a device for producing solid polyamide resin particles.

[0021] Figure 2 for Figure 1 Side view of the overall structure.

[0022] Figure 3 This is a cross-sectional view of the conveying cylinder structure of a solid polyamide resin particle manufacturing device proposed by the present invention.

[0023] Figure 4 This is a schematic diagram of the structure of an extrusion component of a solid polyamide resin particle manufacturing device proposed by the present invention.

[0024] Figure 5 for Figure 4 The overall structure top view.

[0025] Figure 6 for Figure 4 Local structure flip diagram of .

[0026] Figure 7 This is a structural breakdown diagram of the outer extrusion die, middle layer and bonding extrusion die of a solid polyamide resin particle manufacturing device proposed in the present invention.

[0027] Figure 8 The present invention provides a schematic structural diagram of a pelletizing assembly of a device for producing solid polyamide resin pellets.

[0028] Fig. 9 The present invention is a schematic diagram of the combined structure of an air injection pipe and a cooling nozzle of a solid polyamide resin particle manufacturing device proposed by the present invention.

[0029] Fig.10 The present invention provides a schematic diagram of the combined structure of a liquid storage frame and a material discharge assembly of a solid polyamide resin particle manufacturing device.

[0030] Fig.11 The present invention provides a schematic diagram of the combined structure of a partition plate and a buffer receiving block of a solid polyamide resin particle manufacturing device.

[0031] In the figure: 1. conveying cylinder; 2. motor frame; 3. driving motor; 4. grounding seat; 5. support plate; 6. liquid storage frame; 7. unloading assembly; 701. guide plate; 702. liquid hole; 703. partition plate; 704. buffer material receiving block; 705. buffer spring rod; 706. mounting block; 8. cutting assembly; 801. cutter; 802. top plate; 803. infusion tube; 804. infusion pump; 805. pump ring frame; 806. liquid extraction tube; 807. hydraulic cylinder 1; 808. air compressor; 809. knife plate; 810. side rod; 811. jet pipe; 812. jet hole; 813. cooling hole; 814. cooling nozzle; 815. air filter cartridge; 9. collecting box; 10. heating cover; 1 1. Feed pipe; 12. Extrusion assembly; 1201. External extrusion die; 1202. Hydraulic cylinder 2; 1203. Middle layer; 1204. Lifting connecting rod; 1205. Annular scraper; 1206. Negative pressure tube; 1207. Connecting plate; 1208. Pushing frame; 1209. Hydraulic cylinder 3; 1210. Mounting frame; 1211. Limit rail; 1212. Shock-absorbing spring rod; 1213. Limit slider; 1214. Connecting rod; 1215. Laminating extrusion die; 1216. Adsorption pump; 1217. Pipe sleeve; 1218. Hydraulic cylinder 4; 1219. End block; 1220. Press block; 1221. Electric heating tube 1; 13. Spiral conveying blade; 14. Electric heating tube 2; 15. Guide plate. DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0033] A solid polyamide resin pellet making device disclosed in the present invention is mainly used in the existing solid polyamide resin pellet making device. During use, when the resin in a molten state passes through an extrusion die, a small amount of molten resin gradually adheres to the extrusion die near the conveying cylinder. As the granulation process continues, more and more attachments are attached to the extrusion die, and it is cooled and shaped, which will affect the shape and size of the subsequent extruded particles. If the extrusion die is replaced, it is relatively cumbersome and affects the granulation process.

[0034] Reference Figure 1-Figure 11A solid polyamide resin particle manufacturing device comprises a conveying cylinder 1, one end of the conveying cylinder 1 is provided with an extrusion assembly 12, and the extrusion assembly 12 comprises an external extrusion die 1201, both sides of the external extrusion die 1201 are fixedly connected with connecting rods 1214, and both sides of the conveying cylinder 1 close to the connecting rod 1214 are fixedly connected with limiting rails 1211, the interiors of the two limiting rails 1211 are slidably connected with limiting sliders 1213, one side of the two limiting sliders 1213 is fixedly connected with a shock-absorbing spring rod 1212, one end of the shock-absorbing spring rod 1212 is fixedly connected to one side of the connecting rod 1214, the end of the limiting rail 1211 is fixedly connected with an end block 1219, and the side of the end block 1219 facing the shock-absorbing spring rod 1212 is fixedly connected with a hydraulic cylinder four 1218, and the hydraulic cylinder four 1218 The output end is fixedly connected with a pressing block 1220, which is in contact with a limiting slider 1213; the side of the external extrusion die 1201 facing the conveying cylinder 1 is fixedly connected with an intermediate layer 1203, a heating groove is provided inside the intermediate layer 1203, and an electric heating tube 1221 is fixedly connected to the heating groove at an equal distance; the tops of the two connecting rods 1214 are fixedly connected with hydraulic cylinder 2 1202, and the output ends of the two hydraulic cylinders 2 1202 are fixedly connected with a lifting connecting rod 1204, and the ends of the two lifting connecting rods 1204 are fixedly connected with the same fitting extrusion die 1215, and the height of the fitting extrusion die 1215 is twice that of the external extrusion die 1201; a docking hole is provided on the side of the conveying cylinder 1 close to the fitting extrusion die 1215, and the fitting extrusion die 1215 is in contact with the conveying cylinder 1.

[0035] In a specific application scenario, the extrusion die is composed of three parts: an outer extrusion die 1201, an intermediate layer 1203 and a bonding extrusion die 1215. As the granulation operation continues, the solid resin attached to the bonding extrusion die gradually increases. At this time, the hydraulic cylinder 2 1202 is adjusted to drive the lifting connecting rod 1204 to rise, thereby lifting the bonding extrusion die 1215 during the working process. When the extrusion hole below the bonding extrusion die 1215 overlaps with the extrusion hole on the intermediate layer 1203, the hydraulic cylinder 3 1209 is then adjusted to drive the annular scraper 1205 to pass through the extrusion hole above the bonding extrusion die 1215, and the adsorption pump 1216 is started. The annular scraper 1205 scrapes off the attachments in the extrusion hole, and the adsorption pump 1216 collects the fallen impurities through the negative pressure pipe 1206, thereby completing the cleaning of the bonding extrusion die 1215. During the cleaning process, the extrusion operation continues, thereby improving the granulation effect and work efficiency of the particle making device.

[0036] Specifically, during the granulation process, when the resin in a molten state passes through the bonding extrusion die 1215 to the extrusion hole on the middle layer 1203, the electric heating tube 1221 inside the middle layer 1203 is in a continuous heating state, thereby ensuring that the molten resin will not solidify and adhere to the extrusion hole on the middle layer 1203. At the same time, the resin in a molten state can smoothly pass through the extrusion hole on the external extrusion die 1201, avoiding the middle layer 1203 and the extrusion hole on the external extrusion die 1201 from being affected.

[0037] It should be noted that after the external extrusion die 1201, the middle layer 1203 and the bonding extrusion die 1215 are installed, the hydraulic cylinder four 1218 is adjusted to drive the pressure block 1220 to extrude the limiting slider 1213, so that the shock-absorbing spring rod 1212 is passively compressed. After the shock-absorbing spring rod is passively compressed, during the particle extrusion process, the shock-absorbing spring rod 1212 in the compressed state reduces the impact of the molten resin on the bonding extrusion die 1215, thereby protecting the bonding extrusion die 1215 and extending its service life.

[0038] Reference Figure 1-Figure 7 In a preferred embodiment, the top and bottom of the conveying cylinder 1 are fixedly connected to a mounting frame 1210, and both ends of the two mounting frames 1210 facing the laminating extrusion die 1215 are fixedly connected to hydraulic cylinder three 1209, and the output ends of the two hydraulic cylinder three 1209 located on the same mounting frame 1210 are fixedly connected to the same pushing frame 1208, and the end of the pushing frame 1208 is fixedly connected to a connecting plate 1207, and the connecting plate 1207 has connecting holes at equal distances on the side facing the laminating extrusion die 1215, and the interior of each connecting hole is fixedly connected to a negative pressure pipe 1206, and the opening of each negative pressure pipe 1206 The mouth ends are fixedly connected with an annular scraper 1205, and the annular scraper 1205 has the same inner diameter as the extrusion hole on the fitting extrusion die 1215, one side of the connecting plate 1207 is fixedly connected with an adsorption pump 1216, the adsorption end of the adsorption pump 1216 is connected to the inside of the connecting plate 1207 through a pipe, the top and bottom of the conveying cylinder 1 near the mounting frame 1210 are fixedly connected with the collecting box 9, the conveying end of the adsorption pump 1216 is fixedly connected with a conveying pipe, one end of the conveying pipe is inserted into the inside of the collecting box 9, the conveying cylinder 1 is fixedly connected with a pipe sleeve 1217 between the connecting plate 1207 and the collecting box 9, and the conveying pipe passes through the pipe sleeve 1217.

[0039] Reference Figure 1 , Figure 2 and Figure 3In a preferred embodiment, the conveying cylinder 1 is fixedly connected to a motor frame 2 on the side away from the laminating extrusion die 1215, and the motor frame 2 is fixedly connected to a driving motor 3 inside, the output shaft of the driving motor 3 is fixedly connected to the conveying shaft through a coupling, the outer wall of the conveying shaft is fixedly connected to a spiral conveying blade 13, a feed hole is opened at the top of the conveying cylinder 1 near the motor frame 2, and a feed pipe 11 is fixedly connected to the inside of the feed hole, a heating hood 10 is fixedly connected to the inner wall near the bottom of the feed pipe 11, and an electric heating tube 14 is fixedly connected to the inside of the heating hood 10 at an equal distance, two grounding seats 4 are fixedly connected to the bottom of the conveying cylinder 1, and guide plates 15 are fixedly connected to the top inner wall and the bottom inner wall of the conveying cylinder 1 near the laminating extrusion die 1215.

[0040] Reference Figure 1 , Figure 2 , Fig.10 and Fig.11 In a preferred embodiment, one side of one of the grounding seats 4 is fixedly connected to a support plate 5, and the top of the support plate 5 is fixedly connected to a liquid storage frame 6, the interior of the liquid storage frame 6 is filled with coolant, and a feeding assembly 7 is provided inside the liquid storage frame 6, the feeding assembly 7 includes a guide plate 701, and one side of the liquid storage frame 6 is provided with row holes, the guide plate 15 is fixedly connected to the bottom inner wall of the row holes, and liquid holes 702 are equidistantly opened on the inclined surface of the guide plate 701, and a partition plate 703 is equidistantly fixedly connected to the side of the guide plate 701 close to the top, and the opposite sides of each adjacent two partition plates 703 are fixedly connected to a mounting block 706, and a buffer spring rod 705 is fixedly connected to the top of the mounting block 706, and a buffer connecting block 704 is fixedly connected to the top of the buffer spring rod 705, and the buffer connecting block 704 is located directly below the extrusion hole of the external extrusion mold 1201.

[0041] It should be noted that after the resin is extruded and pelletized, it falls between the partition plates 703 under the action of its own gravity. The partition plates 703 divide the resin that has just been pelletized to prevent them from contacting and sticking to each other. When the resin particles fall onto the buffer receiving block 704, the buffer spring rod 705 below it buffers the impact of its fall, protects the resin particles, and prevents them from excessive deformation. When it moves from the buffer receiving block 704 to the guide plate 701, it gradually slides downward. During the sliding process, the coolant attached to its surface gradually detaches and falls into the liquid storage frame 6 below through the liquid hole 702, thereby reducing the loss of coolant.

[0042] Reference Figure 1 , Figure 2 , Figure 8 and Fig. 9In a preferred embodiment, the conveying cylinder 1 is provided with a cutting assembly 8 at the outer extrusion die 1201, and the cutting assembly 8 includes a cutter 801, and side rods 810 are fixedly connected to both sides of the conveying cylinder 1, and the opposite sides of the two side rods 810 are fixedly connected to the same top plate 802, and the top of the top plate 802 is fixedly connected to two hydraulic cylinders 807, and the output ends of the two hydraulic cylinders 807 are fixedly connected to the same knife plate 809, and the cutter 801 is fixedly connected to the bottom of the knife plate 809, and the knife plate 809 is fixedly connected to a cooling nozzle 814 near the bottom of the cutter 801, and the cooling nozzle 814 is equidistantly provided with cooling holes 813 on the outer wall of the cutter 801, and a pump ring is fixedly connected to one side of the liquid storage frame 6. The frame 805 is fixedly connected to the inside of the pump ring frame 805, and the infusion pump 804 is fixedly connected to the infusion end of the infusion pump 804 with the infusion tube 803, one end of the infusion tube 803 is plugged into the inside of the cooling nozzle 814, the liquid inlet end of the infusion pump 804 is fixedly connected to the extraction tube 806, and the open end of the extraction tube 806 is plugged into the inside of the liquid storage frame 6, the bottom of the knife plate 809 is fixedly connected to the jet pipe 811, and the outer wall of the jet pipe 811 facing obliquely downward and facing the cutting knife 801 are both provided with jet holes 812, the top of the knife plate 809 is fixedly connected to the air compressor 808, the gas delivery end of the air compressor 808 is connected to the inside of the jet pipe 811 through a pipeline, and the air inlet end of the air compressor 808 is connected to the air filter cartridge 815 through a pipeline.

[0043] Specifically, after the resin particles are extruded, the hydraulic cylinder 807 is adjusted to drive the cutter 801 to perform pelletizing operation. During the pelletizing process, the infusion pump 804 is started, and the infusion pump 804 introduces the coolant in the liquid storage frame 6 into the cooling nozzle 814, and sprays it on the surface of the cutter 801 through the cooling hole 813. When the cutter 801 cuts the particles, part of the coolant flows to the resin particles to accelerate the cooling of the resin particles. At the same time, the air compressor 808 is started, and the air compressor 808 introduces the compressed gas filtered by the air filter cartridge 815 into the jet pipe 811. Part of the compressed gas rushes to the coolant sprayed on the cutter 801, and the compressed gas blown obliquely accelerates the flow of the coolant. The other part of the compressed gas is directly blown to the resin particles below to further increase its cooling speed.

[0044] Working principle: When in use, the resin is added into the conveying cylinder 1 through the feeding pipe 11. During the resin adding process, the electric heating tube 2 14 is energized to heat it to prevent it from solidifying. The driving motor 3 is started, and the driving motor 3 drives the spiral conveying blade 13 to push it to the laminating extrusion die 1215. After the molten resin passes through the laminating extrusion die 1215, the middle layer 1203 and the extrusion holes on the outer extrusion die 1201, the hydraulic cylinder 1 807 is adjusted to drive the cutter 801 to perform pelletizing operation. During the pelletizing process, the infusion pump 804 is started, and the infusion pump 804 introduces the coolant in the liquid storage frame 6 into the cooling liquid. The cooling liquid is sprayed on the surface of the cutter 801 through the cooling hole 813. When the cutter 801 cuts pellets, part of the cooling liquid flows to the resin pellets to accelerate the cooling of the resin pellets. At the same time, the air compressor 808 is started. The air compressor 808 introduces the compressed gas filtered by the air filter cartridge 815 into the injection pipe 811. Part of the compressed gas rushes to the cooling liquid sprayed on the cutter 801. The compressed gas blown obliquely accelerates the flow of the cooling liquid. The other part of the compressed gas is directly blown to the resin pellets below. The pelletized resin pellets fall between the partition plates 703. The partition plates 703 have a certain effect on the resin pellets just cut. The resin particles are separated to avoid contact and sticking with each other. When the resin particles fall onto the buffer receiving block 704, the buffer spring rod 705 below it buffers the impact of its fall, protects the resin particles, and avoids excessive deformation. When it moves from the buffer receiving block 704 to the guide plate 701, it gradually slides downward. During the sliding process, the coolant attached to its surface gradually detaches and falls into the liquid storage frame 6 below through the liquid hole 702. The staff collects the cooled resin particles. As the granulation operation continues, the solid resin attached to the extrusion die gradually increases. At this time, the hydraulic cylinder is adjusted The second 1202 drives the lifting link 1204 to rise, thereby lifting the laminating extrusion die 1215 during the working process. When the extrusion hole below the laminating extrusion die 1215 overlaps with the extrusion hole on the middle layer 1203, the hydraulic cylinder three 1209 is adjusted to drive the annular scraper 1205 to pass through the extrusion hole above the laminating extrusion die 1215, and the adsorption pump 1216 is started. The annular scraper 1205 scrapes off the attachments in the extrusion hole, and the adsorption pump 1216 collects the detached impurities through the negative pressure tube 1206, thereby completing the cleaning of the laminating extrusion die 1215 and continuing the granulation operation.

[0045] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A solid polyamide resin pellet manufacturing device, comprising a conveying cylinder (1), characterized in that: An extrusion assembly (12) is provided at one end of the conveying cylinder (1), and the extrusion assembly (12) comprises an external extrusion die (1201), both sides of the external extrusion die (1201) are fixedly connected to connecting rods (1214), and both sides of the conveying cylinder (1) close to the connecting rods (1214) are fixedly connected to limit rails (1211), the interiors of the two limit rails (1211) are slidably connected to limit sliders (1213), one side of the two limit sliders (1213) is fixedly connected to a shock-absorbing spring rod (1212), one end of the shock-absorbing spring rod (1212) is fixedly connected to one side of the connecting rod (1214), the end of the limit rail (1211) is fixedly connected to an end block (1219), the side of the end block (1219) facing the shock-absorbing spring rod (1212) is fixedly connected to a hydraulic cylinder four (1218), and the output end of the hydraulic cylinder four (1218) is fixedly connected to a pressure block ( 1220), the pressing block (1220) is in contact with the limiting slider (1213), the side of the external extrusion die (1201) facing the conveying cylinder (1) is fixedly connected to an intermediate layer (1203), a heating groove is provided inside the intermediate layer (1203), and an electric heating tube (1221) is fixedly connected to the heating groove at an equal distance, the tops of the two connecting rods (1214) are fixedly connected to hydraulic cylinders (1202), and the output ends of the two hydraulic cylinders (1202) are fixedly connected to lifting connecting rods (1204), and the ends of the two lifting connecting rods (1204) are fixedly connected to the same fitting extrusion die (1215), the height of the fitting extrusion die (1215) is twice the height of the external extrusion die (1201), and a docking hole is provided on the side of the conveying cylinder (1) close to the fitting extrusion die (1215), and the fitting extrusion die (1215) is in contact with the conveying cylinder (1).

2. A solid polyamide resin particle manufacturing device according to claim 1, characterized in that: The top and bottom of the conveying cylinder (1) are fixedly connected to a mounting frame (1210), and both ends of the two mounting frames (1210) facing the laminating extrusion die (1215) are fixedly connected to hydraulic cylinder three (1209), the output ends of the two hydraulic cylinders three (1209) located on the same mounting frame (1210) are fixedly connected to the same pushing frame (1208), and the end of the pushing frame (1208) is fixedly connected to a connecting plate (1207), and the connecting plate (1207) is provided with connecting holes at equal distances on the side facing the laminating extrusion die (1215), and a negative pressure tube (1206) is fixedly connected to the inside of each connecting hole.

3. A solid polyamide resin particle manufacturing device according to claim 2, characterized in that: The open end of each negative pressure tube (1206) is fixedly connected to an annular scraper (1205), and the annular scraper (1205) has the same inner diameter as the extrusion hole on the laminating extrusion die (1215). An adsorption pump (1216) is fixedly connected to one side of the connecting plate (1207), and the adsorption end of the adsorption pump (1216) is connected to the inside of the connecting plate (1207) through a pipeline. The top and bottom of the conveying cylinder (1) close to the mounting frame (1210) are fixedly connected to the collecting box (9), and the conveying end of the adsorption pump (1216) is fixedly connected to the conveying pipe, one end of the conveying pipe is inserted into the inside of the collecting box (9). The conveying cylinder (1) is fixedly connected to a pipe sleeve (1217) located between the connecting plate (1207) and the collecting box (9), and the conveying pipe passes through the pipe sleeve (1217).

4. The solid polyamide resin particle manufacturing device according to claim 1, characterized in that: The conveying cylinder (1) is fixedly connected to a motor frame (2) on a side away from the laminating extrusion die (1215), and a driving motor (3) is fixedly connected inside the motor frame (2); the output shaft of the driving motor (3) is fixedly connected to a conveying shaft via a coupling, and the outer side wall of the conveying shaft is fixedly connected to a spiral conveying blade (13).

5. A solid polyamide resin particle manufacturing device according to claim 4, characterized in that: The conveying cylinder (1) is provided with a feed hole at the top near the motor frame (2), and a feed pipe (11) is fixedly connected inside the feed hole, a heating cover (10) is fixedly connected to the inner wall near the bottom of the feed pipe (11), and two electric heating pipes (14) are fixedly connected inside the heating cover (10) at an equal distance, and two grounding seats (4) are fixedly connected to the bottom of the conveying cylinder (1), and guide plates (15) are fixedly connected to the top inner wall and the bottom inner wall of the conveying cylinder (1) near the laminating extrusion die (1215).

6. The device for producing solid polyamide resin particles according to claim 5, characterized in that: A support plate (5) is fixedly connected to one side of one of the grounding seats (4), and a liquid storage frame (6) is fixedly connected to the top of the support plate (5); the interior of the liquid storage frame (6) is filled with coolant, and a material discharge assembly (7) is provided inside the liquid storage frame (6).

7. The device for producing solid polyamide resin particles according to claim 6, characterized in that: The material discharge assembly (7) comprises a material guide plate (701), and a row of holes is formed on one side of the liquid storage frame (6); a flow guide plate (15) is fixedly connected to the bottom inner wall of the row of holes; liquid holes (702) are formed on the inclined surface of the material guide plate (701) at equal distances; a partition plate (703) is fixedly connected to one side of the material guide plate (701) close to the top at equal distances; a mounting block (706) is fixedly connected to the opposite side of each two adjacent partition plates (703); a buffer spring rod (705) is fixedly connected to the top of the mounting block (706); a buffer material receiving block (704) is fixedly connected to the top of the buffer spring rod (705); and the buffer material receiving block (704) is located directly below the extrusion hole of the external extrusion die (1201).

8. The device for producing solid polyamide resin particles according to claim 6, characterized in that: The conveying cylinder (1) is provided with a cutting assembly (8) located at the outer extrusion die (1201), and the cutting assembly (8) includes a cutter (801), side rods (810) are fixedly connected to both sides of the conveying cylinder (1), the opposite sides of the two side rods (810) are fixedly connected to the same top plate (802), the top of the top plate (802) is fixedly connected to two hydraulic cylinders (807), the output ends of the two hydraulic cylinders (807) are fixedly connected to the same knife plate (809), and the cutter (801) is fixedly connected below the knife plate (809).

9. The device for producing solid polyamide resin particles according to claim 8, characterized in that: The knife plate (809) is fixedly connected to a cooling nozzle (814) at the bottom near the cutting knife (801), and cooling holes (813) are opened at equal distances on the outer wall of the cooling nozzle (814) facing the cutting knife (801); a pump ring frame (805) is fixedly connected to one side of the liquid storage frame (6); an infusion pump (804) is fixedly connected to the inside of the pump ring frame (805); an infusion end of the infusion pump (804) is fixedly connected to an infusion tube (803); one end of the infusion tube (803) is plugged into the inside of the cooling nozzle (814); a liquid inlet end of the infusion pump (804) is fixedly connected to a liquid extraction tube (806); and an open end of the liquid extraction tube (806) is plugged into the inside of the liquid storage frame (6).

10. The device for producing solid polyamide resin particles according to claim 9, characterized in that: The bottom of the knife plate (809) is fixedly connected to an air jet pipe (811), and the outer wall of the air jet pipe (811) facing obliquely downward and facing the cutting knife (801) is provided with air jet holes (812). The top of the knife plate (809) is fixedly connected to an air compressor (808), the air delivery end of the air compressor (808) is connected to the inside of the air jet pipe (811) via a pipeline, and the air inlet end of the air compressor (808) is connected to an air filter cartridge (815) via a pipeline.

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