A granulating device and method for processing a plastic adhesive resin

Abstract

The application relates to the technical field of adhesive resin processing, in particular to a granulating device and method for plastic adhesive resin processing, which comprises an extruder body, a cooling assembly, a precooling circulating assembly and a cutting assembly arranged at the end of the extruder body, a forming head and a precooling extrusion pipe arranged at the end of the extruder body, a water cutting cavity and a composite interlayer included in the cooling assembly, a circulating cavity, a precooling channel and a circulating pipe included in the precooling circulating assembly. The precooling extrusion pipe and the precooling channel arranged at the forming port of the extruder can make the resin melt preliminarily harden outside, reduce the viscosity of the outer wall of the resin particles and form a protective flow through the composite interlayer from the inner wall of the water cutting cavity after precooling circulation, so that the resin particles thrown to the inner wall of the cutting cavity are intercepted and the resin particles are smoothly discharged, and the resin particles are prevented from adhering to the inner wall of the cavity after being cut.

Description

Technical Field

[0001] This invention relates to the field of adhesive resin processing technology, and in particular to a granulation apparatus and method for processing plastic adhesive resins. Background Technology

[0002] Plastic bonding resin is a material with adhesive properties prepared through chemical reactions or physical methods. It is widely used in many fields such as construction, automobiles, electronics, and packaging. Its main function is to bond objects of different materials. To improve performance and facilitate storage and transportation, it is usually mixed with additives and then prepared into granules. The commonly used granulation equipment mainly includes extrusion strip granulators and underwater cutting granulators.

[0003] When the underwater cutting granulator is working, the resin melt is conveyed to the die head, and after extrusion, it enters the circulating cooling water chamber. Underwater cutting is completed by high-speed rotating blades. The freshly cut granules are hot and sticky, which not only poses a risk of sticking to the cutting blades, but also causes the incompletely solidified granules to be thrown against the chamber wall under centrifugal force and stick to the chamber wall, gradually accumulating and clumping, which is difficult to clean and can also cause the chamber to be blocked.

[0004] Based on this, the present invention designs a granulation device and method for processing plastic adhesive resin to solve the above problems. Summary of the Invention

[0005] In view of the problem that resin particles tend to adhere to the inner wall of the chamber during the water-cutting granulation of adhesive resin in the above or existing technologies, the present invention is proposed.

[0006] Therefore, the object of the present invention is to provide a granulation apparatus and method for processing plastic adhesive resins.

[0007] As a preferred embodiment of the granulation apparatus for processing plastic adhesive resin of the present invention, it includes an extruder body;

[0008] A cooling assembly located at the end of the extruder body, a precooling circulation assembly located inside the cooling assembly, and a cutting assembly located outside the extruder body;

[0009] The extruder body is provided with a forming head at its end, and a pre-cooling extrusion tube is provided inside the forming head;

[0010] The cooling assembly includes a water-cutting chamber disposed at the end of the extruder body, and the wall of the water-cutting chamber is provided with a composite sandwich layer;

[0011] The precooling circulation assembly includes a circulation cavity disposed inside the forming head, and staggered precooling channels and circulation pipes are disposed outside the circulation cavity;

[0012] The precooling extrusion tube is disposed inside the precooling channel, and the ends of the precooling channel and the circulation tube extend into different layers of the composite interlayer.

[0013] As a preferred embodiment of the granulation device for processing plastic adhesive resin of the present invention, the cooling assembly further includes a water filling pipe disposed outside the water cutting chamber and a material discharge pipe disposed outside the water cutting chamber. The composite jacket includes a water discharge jacket near the wall of the water cutting chamber and a water inlet jacket disposed outside the water discharge jacket. The water filling pipe and the material discharge pipe both pass through the water inlet jacket and the water discharge jacket and communicate with the interior of the water cutting chamber.

[0014] As a preferred embodiment of the granulation device for processing plastic adhesive resin of the present invention, the water filling pipe is provided with a diversion channel, one end of the diversion channel is located inside the diversion channel, the other end of the diversion channel passes through the diversion channel and extends into the water inlet jacket, and the wall of the water cutting chamber is provided with a return hole.

[0015] As a preferred embodiment of the granulation device for processing plastic adhesive resin of the present invention, the circulation chamber is a columnar chamber with a partition plate in the middle, the precooling channel is located at the upper end of the circulation chamber and connected to the circulation chamber, and the circulation pipe is located at the lower end of the circulation chamber and connected to the circulation chamber.

[0016] As a preferred embodiment of the granulation device for processing plastic adhesive resin of the present invention, the molding head end is provided with an extrusion die, the pre-cooling extrusion tube is provided at the end of the extrusion die, the pre-cooling extrusion tube end is provided with a pelletizing panel, the partition plate is provided with a through circulation hole, the circulation hole is rotatably provided with a downward spiral conveying roller, and the spiral conveying roller is provided with a drive shaft.

[0017] As a preferred embodiment of the granulation device for processing plastic adhesive resin of the present invention, the cutting component includes a first motor, a power shaft is provided at the end of the first motor, a hollow water inlet seat is provided outside the first motor, a water inlet pipe is provided outside the water inlet seat, the power shaft extends into the water inlet seat, and a rotating shaft is provided on the power shaft, a closed disc is provided outside the rotating shaft, and a cutting element is provided at the end of the rotating shaft.

[0018] As a preferred embodiment of the granulation device for processing plastic adhesive resin of the present invention, the cutting component includes a cutter disc disposed at the end of the rotating shaft, a cutting blade disposed on the outer wall of the cutter disc, a conveying hole opened inside the rotating shaft, a water inlet hole connected to the conveying hole opened outside the rotating shaft, a water injection chamber connected to the conveying hole opened inside the cutter disc, a micro-flow channel opened inside the cutting blade, the micro-flow channel and the water injection chamber being connected through a water injection hole, and a nozzle disposed outside the micro-flow channel.

[0019] As a preferred embodiment of the granulation device for processing plastic adhesive resin of the present invention, the diameter of the water injection hole decreases towards the cutting blade, a guide groove is provided on the outside of the cutting blade, and the end of the nozzle forms a 15° angle with the groove surface of the guide groove.

[0020] As a preferred embodiment of the granulation device for processing plastic adhesive resin of the present invention, a docking assembly is also provided outside the water inlet seat. The docking assembly includes a base, a first motor is provided outside the base, a second motor is provided inside the base, a screw is provided at the end of the second motor, a sliding seat is slidably provided inside the base via a guide rail, the screw passes through the sliding seat and is threadedly connected to the sliding seat, and a bracket is provided between the sliding seat and the water inlet seat.

[0021] As a preferred embodiment of the granulation method for processing plastic adhesive resin of the present invention, the plastic adhesive resin raw material is placed into the extruder body. The extruder body melts the plastic adhesive resin raw material into resin melt, and then extrudes it into strips through the extrusion die and enters the pre-cooling extrusion tube for pre-cooling, so that the outside of the resin melt is initially hardened. Then, the resin melt is extruded from the pelletizing panel and cut into pellets by the rotating cutting blade and enters the water cutting chamber for comprehensive cooling. Under the action of the main water flow in the water cutting chamber towards the discharge pipe and the protective flow generated by the backflow after pre-cooling the pre-cooling extrusion tube, the resin particles do not contact the inner wall of the water cutting chamber and are directly discharged towards the discharge pipe with the water flow.

[0022] The beneficial effects of the granulation apparatus and method for processing plastic adhesive resins of the present invention are as follows:

[0023] 1. This invention, through a pre-cooling extrusion pipe and pre-cooling channel set at the forming port of the extruder, allows for non-contact pre-cooling of the resin melt by circulating cooling water in the water cutting chamber before extrusion and cutting. This causes the outer surface of the resin melt to harden initially, reducing the stickiness of the outer wall of the resin particles. As a result, after extrusion and cutting, the outer wall of the resin is less likely to adhere to the inner wall of the water cutting chamber, thus preventing resin particles from accumulating and adhering to the inner wall of the water cutting chamber after cutting and being unable to be discharged.

[0024] 2. This invention uses a diversion channel to divert a portion of the water injected into the water cutting chamber to a pre-cooling channel for pre-cooling. The pre-cooled water is then returned to the water cutting chamber via a circulation chamber and circulation pipe, forming a continuous pre-cooling water flow. The returned water is discharged through dense return holes on the inner wall of the water cutting chamber, forming an internally repellent protective flow that intercepts resin particles thrown towards the inner wall of the cutting chamber and guides the resin particles to be discharged smoothly. This further prevents resin particles from accumulating and adhering to the inner wall of the water cutting chamber after cutting.

[0025] 3. This invention, through the micro-flow channels and nozzles set inside the cutting blade, can directionally spray high-speed water along the cutting surface of the cutting blade when the cutting blade cuts the resin melt. This not only accelerates the water flow rate at the cutting surface, allowing the cutting blade to cool quickly and reducing thermal stress, but also cools the cut surface of the resin melt during cutting, reducing the viscosity of the resin melt at the cutting point, and preventing the resin melt from adhering to the cutting surface of the cutting blade. Attached Figure Description

[0026] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the following description of the embodiments will be briefly introduced. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 This is a schematic diagram of the overall structure of a plastic adhesive resin processing and granulation device according to the present invention.

[0028] Figure 2 This is a schematic diagram of the cooling component structure of a plastic adhesive resin processing and granulation device according to the present invention.

[0029] Figure 3 This is a schematic diagram of the molding head structure of a plastic adhesive resin processing and granulation device according to the present invention;

[0030] Figure 4 This is a schematic diagram of the pelletizing panel structure of a plastic adhesive resin processing pelletizing device according to the present invention;

[0031] Figure 5 This is a schematic diagram of the outer structure of the precooling circulation component of a plastic adhesive resin processing and granulation device according to the present invention.

[0032] Figure 6 This is a schematic diagram of the inner structure of the precooling circulation component of a plastic adhesive resin processing and granulation device according to the present invention.

[0033] Figure 7 This is a cross-sectional view of the internal structure of the cooling component of a plastic adhesive resin processing and granulation device according to the present invention.

[0034] Figure 8 This is a schematic diagram of the cutting component and the docking component of a plastic adhesive resin processing and granulation device according to the present invention.

[0035] Figure 9 This is a schematic diagram of the outer structure of the water inlet cavity of a plastic adhesive resin processing and granulation device according to the present invention.

[0036] Figure 10This is a schematic diagram of the cutting component structure of a plastic adhesive resin processing and granulation device according to the present invention.

[0037] Figure 11 This is a cross-sectional view of the internal structure of the cutting component of a plastic adhesive resin processing and granulation device according to the present invention.

[0038] Figure 12 This invention relates to a plastic adhesive resin processing and granulation apparatus. Figure 11 Enlarged view of area A in the middle.

[0039] The labels in the diagram represent: 1. Extruder body; 11. Forming head; 12. Extrusion die; 13. Pre-cooling extrusion tube; 14. Pelletizing panel; 2. Cooling assembly; 21. Water cutting chamber; 22. Discharge pipe; 23. Water filling pipe; 231. Diversion channel; 24. Composite jacket; 241. Water inlet jacket; 242. Water outlet jacket; 25. Return hole; 3. Pre-cooling circulation assembly; 31. Circulation chamber; 32. Pre-cooling channel; 33. Circulation pipe; 34. Partition plate; 341. Circulation hole; 342. Screw conveyor. 343. Roller; 4. Drive shaft; 5. Cutting assembly; 6. First motor; 7. Power shaft; 8. Water inlet seat; 9. Cutting piece; 10. Cutter disc; 11. Cutting blade; 12. Water injection chamber; 13. Water injection hole; 14. Guide channel; 15. Microflow channel; 16. Nozzle; 17. Water inlet pipe; 18. Sealing disc; 19. Rotating shaft; 20. Conveying hole; 21. Water inlet hole; 22. Docking assembly; 33. Machine base; 44. Second motor; 55. Screw; 66. Sliding seat; 77. Support. Detailed Implementation

[0040] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0041] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of the invention. Therefore, the invention is not limited to the specific embodiments disclosed below.

[0042] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that is mutually exclusive with other embodiments.

[0043] Example 1, refer to Figure 1 to... Figure 7This is the first embodiment of the present invention. This embodiment provides a granulation device for processing plastic adhesive resin, which can realize the function of pre-cooling the outside of the resin melt to reduce the external viscosity before resin cutting and granulation, and forming a protective flow that blocks the resin particles from approaching the inner wall of the water cutting chamber 21. It includes an extruder body 1.

[0044] Specifically, the cooling assembly 2 is located at the end of the extruder body 1, the precooling circulation assembly 3 is located inside the cooling assembly 2, and the cutting assembly 4 is located outside the extruder body 1;

[0045] Furthermore, a cooling assembly 2 is installed at the end of the extruder body 1, a precooling circulation assembly 3 is installed inside the cooling assembly 2, and a cutting assembly 4 is independently installed outside the extruder body 1;

[0046] Specifically, a forming head 11 is provided at the end of the extruder body 1, and a pre-cooling extrusion tube 13 is provided inside the forming head 11;

[0047] Furthermore, a forming head 11 is installed at the end of the extruder body 1, and multiple pre-cooling extrusion tubes 13 arranged in a dense ring are installed inside the forming head 11.

[0048] Specifically, the cooling assembly 2 includes a water-cutting chamber 21 disposed at the end of the extruder body 1, and the wall of the water-cutting chamber 21 is provided with a composite sandwich 24;

[0049] Furthermore, the cooling assembly 2 includes a water-cutting chamber 21 installed at the end of the extruder body 1. The water-cutting chamber 21 is located outside the forming head 11, and the cavity wall of the water-cutting chamber 21 is fitted with a double-cavity composite sandwich 24.

[0050] Specifically, the precooling circulation assembly 3 includes a circulation cavity 31 disposed inside the molding head 11, and the outside of the circulation cavity 31 is provided with interlaced precooling channels 32 and circulation pipes 33;

[0051] Furthermore, the precooling circulation assembly 3 includes a circulation cavity 31 fixed at the center inside the molding head 11, and staggered precooling channels 32 and circulation pipes 33 are installed on the outside of the circulation cavity 31. The precooling channels 32 and circulation pipes 33 are arranged in a dense ring and staggered with each other.

[0052] Furthermore, a section of the outer wall of the precooling extrusion pipe 13 is inside the precooling channel 32. When the water flows through the precooling channel 32, it comes into contact with the precooling extrusion pipe 13 for heat exchange. The ends of the precooling channel 32 and the circulation pipe 33 extend into different layers of the composite interlayer 24, respectively.

[0053] Specifically, the cooling assembly 2 also includes a water filling pipe 23 disposed outside the water cutting chamber 21 and a discharge pipe 22 disposed outside the water cutting chamber 21. The composite jacket 24 includes a water outlet jacket 242 near the wall of the water cutting chamber 21 and a water inlet jacket 241 disposed outside the water outlet jacket 242. The water filling pipe 23 and the discharge pipe 22 both pass through the water inlet jacket 241 and the water outlet jacket 242 and are connected to the interior of the water cutting chamber 21.

[0054] Furthermore, the cooling assembly 2 also includes a water filling pipe 23 installed outside the water cutting chamber 21 and a discharge pipe 22 installed outside the water cutting chamber 21. The two chambers of the composite jacket 24 are specifically a water outlet jacket 242 located near the wall of the water cutting chamber 21 and a water inlet jacket 241 located outside the water outlet jacket 242. The water inlet jacket 241 is isolated from the water outlet jacket 242. The water filling pipe 23 and the discharge pipe 22 both pass through the water inlet jacket 241 and the water outlet jacket 242 and are connected to the interior of the water cutting chamber 21.

[0055] Specifically, a diversion channel 231 is provided inside the water filling pipe 23. One end of the diversion channel 231 is located inside the water filling pipe 23, and the other end of the diversion channel 231 is the water filling pipe 23 that extends into the water inlet jacket 241. A return hole 25 is provided on the wall of the water cutting chamber 21.

[0056] Furthermore, a diversion channel 231 is installed inside the water filling pipe 23. One end of the diversion channel 231 is located inside the water filling pipe 23, and some of the water in the water filling pipe 23 will enter the diversion channel 231. The other end of the diversion channel 231 passes through the water filling pipe 23 and extends into the water inlet jacket 241. When water enters the water filling pipe 23, some water will enter the water inlet jacket 241 through the diversion channel 231. The cavity wall of the water cutting chamber 21 is provided with annularly densely arranged return holes 25.

[0057] Specifically, the circulation chamber 31 is a columnar chamber with a partition plate 34 in the middle. The precooling channel 32 is located at the upper end of the circulation chamber 31 and is connected to the circulation chamber 31. The circulation pipe 33 is located at the lower end of the circulation chamber 31 and is connected to the circulation chamber 31.

[0058] Furthermore, the circulation chamber 31 is a columnar chamber with a partition plate 34 in the middle. The precooling channel 32 is installed on the outer wall of the upper end of the circulation chamber 31 and communicates with the circulation chamber 31. The circulation pipe 33 is installed on the outer wall of the lower end of the circulation chamber 31 and communicates with the circulation chamber 31.

[0059] Specifically, the forming head 11 is provided with an extrusion die 12 at its end, the pre-cooling extrusion tube 13 is provided at the end of the extrusion die 12, the pre-cooling extrusion tube 13 is provided with a pelletizing panel 14 at the outside of its end, the partition plate 34 is provided with a through circulation hole 341, the circulation hole 341 is rotatably provided with a downward spiral conveying roller 342, and the spiral conveying roller 342 is provided with a drive shaft 343.

[0060] Furthermore, an extrusion die 12 is installed at the end of the forming head 11, and a pre-cooling extrusion tube 13 is installed on the extrusion hole at the end of the extrusion die 12. A pelletizing panel 14 is installed on the outside of the end of the pre-cooling extrusion tube 13, which closes the forming head 11. A through circulation hole 341 is opened in the middle of the partition plate 34. A downward spiral conveying roller 342 is rotatably connected inside the circulation hole 341. A drive shaft 343 is installed on the outside of the spiral conveying roller 342 near the extruder body 1. The extruder body 1 is a single screw 53 extruder with built-in heating equipment, which is conventional existing technology and will not be described in detail. The drive shaft 343 extends into the extruder body 1 and is connected to the main power shaft 411 of the single screw 53 extruder body 1 for rotation, thereby driving the spiral roller to rotate.

[0061] It should be noted that during the water intake process, as the diversion pipe transports water to the water intake jacket 241, the precooling channel 32, and the circulation chamber 31, the water entering the water cutting chamber 21 through the water filling pipe 23 will first fill the water cutting chamber 21. During this process, the water will also enter the water outlet jacket 242 through the return hole 25 and enter the circulation chamber 31 along the circulation pipe 33. There will be a period of backflow. The spiral conveying roller 342 is set to pressurize the water so that the water in the circulation chamber 31 flows towards the water cutting chamber 21.

[0062] During processing, the plastic bonding resin raw material is placed into the extruder body 1. The extruder body 1 melts the plastic bonding resin raw material into a resin melt, which is then extruded into strips through the extrusion die 12 and enters the interior of multiple pre-cooling extrusion tubes 13. At this time, the water inlet pipe 44 continuously injects water into the water cutting chamber 21, filling the entire water cutting chamber 21 with water. After the water cutting chamber 21 is full of water, the water is discharged outward from the discharge pipe 22. Some of the water in the filling pipe 23 enters the diversion channel 231 and then enters the water inlet jacket 24 along the diversion channel 231. Inside the water inlet jacket 241, the water moves towards the circulation chamber 31 through the precooling channel 32. When the water flows through the precooling extrusion tube 13 in the precooling channel 32, the water exchanges heat with the precooling extrusion tube 13 to precool the outside of the resin melt inside the precooling extrusion tube 13, so that the outside of the resin melt is initially hardened and the viscosity of the outside of the resin melt is reduced. Then the resin melt is extruded from the pelletizing panel 14 at the end of the precooling extrusion tube 13 and cut by the cutting component 4. The resin melt is cut into resin particles and is fully cooled in the water in the water cutting chamber 21.

[0063] Water in the precooling channel 32 flows through the precooling extrusion pipe 13 and enters the top position of the circulation chamber 31. At this time, the drive shaft 343 rotates under the drive of the main shaft of the extruder body 1, which in turn drives the spiral conveying pipe to rotate. The spiral conveying roller 342 rotates and conveys the water at the top of the circulation chamber 31 downwards. The water enters the bottom of the circulation chamber 31 from the top. With the continuous operation of the spiral conveying roller 342, the water at the bottom of the circulation chamber 31 enters the circulation pipe 33 and enters the outlet jacket 242 along the circulation pipe 33. With the continuous water intake of the diversion pipe, the water in the outlet pipe eventually flows through the outlet jacket 242. The water flows into the water-cutting chamber 21 through the return hole 25. This part of the water flows towards the water-cutting chamber 21, forming an internal repulsive protective flow. When the cut resin particles approach the inner wall of the water-cutting chamber 21, they are blocked by the water flowing into the water-cutting chamber 21 through the return hole 25, preventing the resin particles from contacting the inner wall of the water-cutting chamber 21. Under the action of the main water flow in the water-cutting chamber 21 towards the discharge pipe 22 and the protective flow generated by the return flow after pre-cooling the pre-cooling extrusion pipe 13, the resin particles do not contact the inner wall of the water-cutting chamber 21 and are directly discharged towards the discharge pipe 22 with the water flow.

[0064] Example 2, refer to Figure 8 to... Figure 12 This is the second embodiment of the present invention. Unlike the previous embodiment, it includes a cutting assembly 4. The cutting assembly 4 includes a first motor 41. A power shaft 411 is provided at the end of the first motor 41. A hollow water inlet seat 42 is provided outside the first motor 41. A water inlet pipe 44 is provided outside the water inlet seat 42. The power shaft 411 extends into the water inlet seat 42. A rotating shaft 46 is provided on the power shaft 411. A closed disc 45 is provided outside the rotating shaft 46. A cutting element 43 is provided at the end of the rotating shaft 46.

[0065] Furthermore, the cutting assembly 4 includes a first motor 41, a power shaft 411 mounted at the end of the first motor 41, a hollow water inlet seat 42 at the front end of the first motor 41, a water inlet pipe 44 mounted on the outside of the water inlet seat 42, the power shaft 411 extending into the water inlet seat 42, and a rotating shaft 46 mounted on the power shaft 411, a mechanical seal being made at the connection between the power shaft 411 and the water inlet seat 42, a sealing disc 45 being mounted on the outer wall of the rotating shaft 46, the sealing disc 45 corresponding to the water cutting chamber 21 and a sealing ring being mounted on the inner wall that mates with the water cutting chamber 21, and a cutting component 43 being mounted at the end of the rotating shaft 46.

[0066] Specifically, the cutting component 43 includes a cutter disc 431 disposed at the end of the rotating shaft 46, a cutting blade 432 disposed on the outer wall of the cutter disc 431, a conveying hole 47 disposed inside the rotating shaft 46, a water inlet hole 471 disposed outside the rotating shaft 46 and connected to the conveying hole 47, a water injection chamber 433 disposed inside the cutter disc 431 and connected to the conveying hole 47, a micro-flow channel 436 disposed inside the cutting blade 432, the micro-flow channel 436 and the water injection chamber 433 are connected through a water injection hole 434, and a nozzle 437 is disposed outside the micro-flow channel 436.

[0067] Furthermore, the cutting component 43 includes a cutter disc 431 installed at the end of the rotating shaft 46. Multiple cutting blades 432 are arranged in a ring on the outer wall of the cutter disc 431. Multiple conveying holes 47 are opened inside the rotating shaft 46. Multiple water inlet holes 471 connected to the conveying holes 47 are opened on the outer wall of the rotating shaft 46 located inside the water inlet seat 42. A water injection chamber 433 connected to the conveying holes 47 is opened inside the cutter disc 431. A micro-flow channel 436 is opened inside the cutting blade 432. The micro-flow channel 436 is connected to the water injection chamber 433 through a water injection hole 434. A flat nozzle 437 is provided on the outside of the micro-flow channel 436.

[0068] It should be noted that the closed disc 45 is rotatably connected to the rotating shaft 46, and a mechanical seal is provided at the connection between the closed disc 45 and the rotating shaft 46.

[0069] Furthermore, the diameter of the water injection hole 434 decreases towards the cutting blade 432. By gradually reducing the diameter, the flow rate of the internal water can be increased. A guide groove 435 is provided on the outside of the cutting blade 432, and the end of the nozzle 437 forms a 15° angle with the groove surface of the guide groove 435.

[0070] Before cutting, the first motor 41, the water inlet seat 42, and the cutter head 431 move toward the water cutting chamber 21 under the drive of the docking assembly 5. The sealing plate 45 seals the water cutting chamber 21. During cutting, the first motor 41 drives the power shaft 411 to rotate, and the power shaft 411 drives the rotating shaft 46 to rotate. At the same time, the water inlet pipe 44 injects water into the water inlet seat 42. Then, the water enters the conveying hole 47 through the water inlet hole 471. The conveying hole 47 delivers the water to the water injection chamber 433. After entering the water injection chamber 433, the water enters the micro-flow channel 436 along the water injection hole 434. When the water flows in the water injection hole 434, as the diameter of the water injection hole 434 gradually decreases, the flow rate of the water increases. After entering the micro-flow channel 436, the water is sprayed out from the nozzle 437.

[0071] At this time, the cutter head 431 drives the cutting blade 432 to rotate continuously, cutting the continuously extruded resin melt into granules. At the same time, the nozzle 437 continuously sprays water on the surface of the cutting blade 432 to form a water curtain with a flow rate faster than the water flow in the water cutting chamber 21. When the cutting blade 432 cuts through the resin melt, the faster-flowing water curtain can continuously scour and protect the blade surface of the cutting blade 432, preventing the resin melt from adhering to the cutting blade 432. In addition, the cutting end face of the resin melt and the cutting blade 432 can be cooled quickly under the action of the faster-flowing water curtain, so that the cutting cross-section of the resin melt is cooled and the viscosity is reduced, making it less likely to stick at the cross-section.

[0072] Example 3, referring to Figure 1 and Figure 8 This is the third embodiment of the present invention. Unlike the previous embodiment, it includes a docking component 5. The docking component 5 includes an independently set base 51. A first motor 41 is set outside the base 51. A second motor 52 is also set inside the base 51. A screw 53 is set at the end of the second motor 52. A sliding seat 54 is slidably set inside the base 51 through a guide rail. The screw 53 passes through the sliding seat 54 and is threadedly connected to the sliding seat 54. A bracket 55 is set between the sliding seat 54 and the water inlet seat 42.

[0073] Furthermore, the first motor 41 is installed at the top rear end of the base 51, and the second motor 52 is installed inside the base 51. The end of the second motor 52 is equipped with a screw 53. The bottom of the base 51 is slidably connected to a sliding seat 54 that can move laterally via a guide rail. The screw 53 passes through the sliding seat 54 and is threadedly connected to the sliding seat 54. A bracket 55 is installed between the sliding seat 54 and the water inlet seat 42.

[0074] Before granulation, after checking that all components in the water-cutting chamber 21 are undamaged, the second motor 52 is started. The second motor 52 drives the water inlet seat 42 and the first motor 41 to move toward the water-cutting chamber 21 through the bracket 55, which in turn drives the cutting blade 432 and the blade disc 431 to move toward the water-cutting chamber 21, so that the blade disc 431 extends into the water-cutting chamber 21, and the sealing disc 45 outside the rotating shaft 46 seals the water-cutting chamber 21, completing the docking.

[0075] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A granulation device for processing plastic adhesive resin, characterized in that: include, Extruder body (1); and, A cooling assembly (2) is disposed at the end of the extruder body (1), a precooling circulation assembly (3) is disposed inside the cooling assembly (2), and a cutting assembly (4) is disposed outside the extruder body (1); wherein, The extruder body (1) is provided with a forming head (11) at one end, and a pre-cooling extrusion tube (13) is provided inside the forming head (11); and, The cooling assembly (2) includes a water-cutting chamber (21) disposed at the end of the extruder body (1), a water-filling pipe (23) disposed outside the water-cutting chamber (21), and a discharge pipe (22) disposed outside the water-cutting chamber (21). The wall of the water-cutting chamber (21) is provided with a composite jacket (24). The composite jacket (24) includes a water-discharge jacket (242) near the wall of the water-cutting chamber (21) and a water-inlet jacket (241) disposed outside the water-discharge jacket (242). The water-filling pipe (23) and the discharge pipe (22) both pass through the water-inlet jacket (241) and the water-discharge jacket (242) and communicate with the interior of the water-cutting chamber (21). The water filling pipe (23) is provided with a diversion channel (231) inside. One end of the diversion channel (231) is located inside the water filling pipe (23), and the other end of the diversion channel (231) passes through the water filling pipe (23) and extends into the water inlet jacket (241). The wall of the water cutting chamber (21) is provided with a return hole (25); and, The precooling circulation assembly (3) includes a circulation cavity (31) disposed inside the forming head (11), and the circulation cavity (31) is provided with staggered precooling channels (32) and circulation pipes (33); wherein, The precooling extrusion tube (13) is located inside the precooling channel (32), and the ends of the precooling channel (32) and the circulation tube (33) extend into different layers of the composite interlayer (24).

2. The granulation device for processing plastic adhesive resin according to claim 1, characterized in that: The circulation chamber (31) is a columnar chamber with a partition plate (34) in the middle. The precooling channel (32) is located at the upper end of the circulation chamber (31) and connected to the circulation chamber (31). The circulation pipe (33) is located at the lower end of the circulation chamber (31) and connected to the circulation chamber (31).

3. The granulation device for processing plastic adhesive resin according to claim 2, characterized in that: The forming head (11) is provided with an extrusion die (12) at its end. The pre-cooling extrusion tube (13) is provided at the end of the extrusion die (12). A pelletizing panel (14) is provided on the outside of the end of the pre-cooling extrusion tube (13). The partition plate (34) has a through circulation hole (341). A downward spiral conveying roller (342) is rotatably provided inside the circulation hole (341). The spiral conveying roller (342) is provided with a drive shaft (343).

4. The granulation device for processing plastic adhesive resin according to claim 3, characterized in that: The cutting assembly (4) includes a first motor (41), a power shaft (411) is provided at the end of the first motor (41), a hollow water inlet seat (42) is provided outside the first motor (41), a water inlet pipe (44) is provided outside the water inlet seat (42), the power shaft (411) extends into the water inlet seat (42), and a rotating shaft (46) is provided on the power shaft (411), a closed disc (45) is provided outside the rotating shaft (46), and a cutting component (43) is provided at the end of the rotating shaft (46).

5. The granulation device for processing plastic adhesive resin according to claim 4, characterized in that: The cutting component (43) includes a cutter disc (431) disposed at the end of the rotating shaft (46), a cutting blade (432) disposed on the outer wall of the cutter disc (431), a conveying hole (47) is provided inside the rotating shaft (46), a water inlet hole (471) connected to the conveying hole (47) is provided outside the rotating shaft (46), a water injection chamber (433) connected to the conveying hole (47) is provided inside the cutter disc (431), a micro-flow channel (436) is provided inside the cutting blade (432), the micro-flow channel (436) is connected to the water injection chamber (433) through a water injection hole (434), and a nozzle (437) is provided outside the micro-flow channel (436).

6. The granulation apparatus for processing plastic adhesive resin according to claim 5, characterized in that: The diameter of the water injection hole (434) decreases towards the cutting blade (432), and a guide groove (435) is provided on the outside of the cutting blade (432). The end of the nozzle (437) forms a 15° angle with the groove surface of the guide groove (435).

7. The granulation apparatus for processing plastic adhesive resin according to claim 6, characterized in that: The water inlet seat (42) is also provided with a docking assembly (5). The docking assembly (5) includes a base (51). The first motor (41) is located outside the base (51). The base (51) is also provided with a second motor (52). The end of the second motor (52) is provided with a screw (53). The base (51) is slidably provided with a sliding seat (54) through a guide rail. The screw (53) passes through the sliding seat (54) and is threadedly connected to the sliding seat (54). A bracket (55) is provided between the sliding seat (54) and the water inlet seat (42).

8. A granulation method for processing plastic adhesive resin, characterized in that: The apparatus includes a granulation device for processing plastic adhesive resin as described in any one of claims 1 to 7, and the following steps: Plastic bonding resin raw material is placed into the extruder body (1). The extruder body (1) melts the plastic bonding resin raw material into resin melt and then extrudes it into strips through the extrusion die (12) and enters the pre-cooling extrusion tube (13) for pre-cooling, so that the outside of the resin melt is initially hardened. Then the resin melt is extruded from the pelletizing panel (14), cut into pellets by the rotating cutter (432) and enters the water cutting chamber (21) for comprehensive cooling. Under the action of the main water flow in the water cutting chamber (21) towards the discharge pipe (22) and the protective flow generated by the backflow after pre-cooling the pre-cooling extrusion tube (13), the resin particles do not contact the inner wall of the water cutting chamber (21) and are discharged directly towards the discharge pipe (22) with the water flow.

Images