A hydraulic granulator for recycling polymer materials

Abstract

The invention belongs to the technical field of polymer material processing, and discloses a hydraulic granulator for polymer material recycling, comprising a bottom plate, a top end of the bottom plate is fixedly connected to a support column, a middle inner surface of the support column is fixedly connected to a fixed plate, a middle part of the fixed plate is fixedly connected to an electric guide rail, a lower right end of the electric guide rail is fixedly connected to a third motor, an output end of the third motor is fixedly connected to a tool holder assembly, the tool holder assembly comprises a tool holder housing fixedly connected to the output end of the third motor, a positioning wheel is rotatably connected to the inner side of the tool holder housing, a positioning frame is rotatably connected to the right end of the positioning wheel, the positioning frame is connected to the positioning plate through a first shock absorber, a second shock absorber is fixedly connected to the middle of the left end of the positioning plate, the other end of the second shock absorber is fixedly connected to a connecting disk, and the connecting disk is connected to a rotating disk and a strong magnetic part through a bearing. The invention solves the problems that uneven crushing of raw materials affects the quality of finished products and cutting vibration affects the pelletizing effect.

Description

Technical Field

[0001] The invention belongs to the technical field of polymer material processing, and in particular relates to an oil pressure granulator for polymer material recycling. Background Art

[0002] In the process of manufacturing polymer materials, a granulator is needed. A granulator is a molding machine that can make materials into specific shapes. The disadvantage of the strip making method is that the cooling section needs to take up space, and its length is determined by the temperature requirements of the polymer to become a saleable raw material. The power required by the granulator is proportional to the extrusion volume and exponentially related to the filter size. In the die face hot pelletizing system, when the molten polymer appears from the die, pelletizing is performed, and the pellets are cooled downstream. During the use of the existing granulator, there is a situation where the raw materials are not completely crushed, which affects the uniform heating of the raw materials and the quality of the finished products. At the same time, during the pelletizing process, the tool will directly contact and cut with the molten polymer, and the molten polymer has a certain toughness and viscosity. The tool and the tool holder will vibrate, thereby affecting the cutting of the tool holder and the tool, resulting in inconsistent pellet sizes. Long-term vibration will also affect the pelletizing effect and service life of the granulator. Summary of the invention

[0003] The present invention aims at the problems in the prior art that uneven raw material crushing affects the quality of finished products and cutting vibration affects the pelletizing effect, and proposes the following technical solutions:

[0004] A hydraulic granulator for polymer material recycling, characterized in that it comprises a bottom plate, a top end of the bottom plate is fixedly connected to a support column, a middle inner surface of the support column is fixedly connected to a fixed plate, a middle part of the fixed plate is fixedly connected to an electric guide rail, a lower right end of the electric guide rail is fixedly connected to a third motor, and an output end of the third motor is fixedly connected to a tool holder assembly;

[0005] The tool holder assembly includes a tool holder housing fixedly connected to the output end of the third motor, a positioning wheel is rotatably connected to the inner side of the tool holder housing, a positioning frame is rotatably connected to the right end of the positioning wheel, a first shock absorber is rotatably connected to the inner side of the positioning frame, a positioning plate is rotatably connected to the other end of the first shock absorber, a second shock absorber is fixedly connected to the middle of the left end of the positioning plate, a connecting disk is fixedly connected to the other end of the second shock absorber, a bearing is fixedly connected to the inner surface of the middle of the left end of the connecting disk, a rotating disk is rotatably connected to the inner surface of the bearing, and a strong magnetic component is fixedly connected to the middle of the left end of the rotating disk.

[0006] As a preferred embodiment of the above technical solution, a limiting ring is fixedly connected to the inner surface of the middle part of the left end of the connecting disk, and the right end of the limiting ring abuts the left end of the strong magnetic part. The right end edge of the connecting disk is fixedly connected to a side frame, and the inner surface of the edge of the side frame is rotatably connected to an auxiliary wheel, and the outer surface of the auxiliary wheel fits with the inner surface of the tool holder shell. The left end of the side frame is fixedly connected to a spring telescopic rod, and the other end of the spring telescopic rod is fixedly connected to a sliding wheel, and the inner surface of the sliding wheel is fixedly connected to a third shock absorber, and the other end of the third shock absorber is fixedly connected to a limiting wheel, and the outer surface of the limiting wheel abuts against the outer surface of the limiting ring. A positioning plate is provided at the inner end of the positioning frame, and a cutting blade is fixedly connected to the outer surface of the tool holder shell.

[0007] As a preferred embodiment of the above technical solution, the top end of the support column is fixedly connected to a top plate, the upper end of the top plate is fixedly connected to a cutting box, the upper end of the cutting box is fixedly connected to a feed port, the inner surface of the cutting box is rotatably connected to a knife shaft, the outer surface of the knife shaft is clamped with a plurality of cutting blades and washers, the front and rear side surfaces of the cutting blades fit with the front and rear side surfaces of the washers, a side knife assembly is arranged inside the cutting box, the inner surface of the cutting box is rotatably connected to a small shaft, the outer surface of the small shaft is fixedly connected with a plurality of washers and a thin knife, the front and rear side surfaces of the thin knife fit with the front and rear side surfaces of the washers.

[0008] As a preferred embodiment of the above technical solution, the edge knife assembly includes an auxiliary edge knife and a guide edge knife which are clamped with the inner surface of the cutting box body, the auxiliary edge knife is located between adjacent cutting blades, and the guide edge knife is located outside the thin knife.

[0009] As a preferred embodiment of the above technical solution, the upper right end of the top plate is fixedly connected to the first motor, the output end of the first motor is fixedly connected to the large sprocket, the rear end of the right knife shaft is fixedly connected to the small sprocket, the rear end of the right small shaft is fixedly connected to the auxiliary sprocket, the upper end of the top plate is fixedly connected to the tensioning wheel, the large sprocket, the small sprocket and the auxiliary sprocket are connected by chain transmission, the outer surface of the tensioning wheel is in contact with the outer surface of the chain, the front end is respectively fixedly connected to the driven large gear and the driving large gear, the outer surfaces of the driven large gear and the driving large gear are meshed, the front end is respectively fixedly connected to the driven pinion and the driving pinion, the outer surfaces of the driven pinion and the driving pinion are meshed.

[0010] As a preferred embodiment of the above technical solution, the bottom end of the cutting box is fixedly connected to a guide cover, the bottom end of the guide cover is fixedly connected to a storage barrel, the right end of the storage barrel is fixedly connected to a driving structure, and the output end of the driving structure is fixedly connected to a feeding screw.

[0011] As a preferred embodiment of the above technical solution, the upper left end of the fixed plate is connected to a heating box, the inner side of the heating box is fixedly connected to an extrusion sleeve, the outer side of the extrusion sleeve is fixedly connected to a heating tube, and the front end of the fixed plate is fixedly connected to two fans.

[0012] As a preferred embodiment of the above technical solution, a second motor is fixedly connected to the top left end of the top plate, and the output end of the second motor is fixedly connected to the extrusion screw through the top plate through a coupling, and the bottom end of the extrusion sleeve is fixedly connected to the die head, the right end of the die head is fitted with the left end of the limiting ring, the right end of the die head is in contact with the outer surface of the sliding wheel, and an oil pressure port is opened at the left end of the die head.

[0013] As a preferred embodiment of the above technical solution, a pelletizing hood is fixedly connected to the left end of the middle part of the electric guide rail, a blower is fixedly connected to the inner side of the right support column, the output end of the blower is pipe-connected to the upper end of the pelletizing hood, the bottom end of the support column is fixedly connected to a base plate, the top end of the base plate is abutted against a material box, and a movable roller is fixedly connected to the upper edge of the base plate.

[0014] The beneficial effects of the present invention are:

[0015] (1) By providing a limit ring buckle, the cutter housing and the right end of the die head can be fixed when the cutting blade cuts the molten polymer, and the cutter housing is laterally damped and positioned by the first shock absorber to ensure that the position of the connecting plate is concentric with the cutter housing, and the limit ring buckle is damped by the third shock absorber and the auxiliary wheel is abutted against the inner wall of the cutter housing to ensure that the sliding wheel is concentric with the cutter housing, thereby further offsetting the radial vibration, avoiding the large shaking of the cutting blade, and improving the pelletizing effect and the overall service life;

[0016] (2) At the same time, the second shock absorber and the spring telescopic rod are used to offset the axial vibration generated by the tool holder housing during cutting, and provide shock absorption when the limit ring buckle contacts and separates from the die head, thereby protecting the limit ring buckle to ensure that there will be no severe impact and pulling, thereby further improving the shock absorption effect and overall safety of use.

[0017] (3) By providing a combination of cutting blades, edge knife assemblies and thin knives, cutting is performed under the stable transmission of gears, thereby crushing the raw materials multiple times, while preventing missed cutting at the periphery of the cutter, ensuring the overall cutting and crushing efficiency, and helping to improve the melting efficiency of the heating tube for the raw materials and the overall pelletizing effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 Shown is a perspective view of an oil pressure granulator for polymer material recycling;

[0019] Figure 2 Shown is a rear view of an oil pressure granulator for recycling polymer materials.

[0020] Figure 3Shown is a schematic diagram of the internal structure of an oil pressure granulator for polymer material recycling;

[0021] Figure 4 It is shown that Figure 3 Front view of .

[0022] Figure 5 Shown is a schematic diagram of partial parts of an oil pressure granulator for recycling polymer materials.

[0023] Figure 6 Shown is a cross-sectional view of the die head;

[0024] Figure 7 Shown is a schematic diagram of some parts of a hydraulic granulator for recycling polymer materials;

[0025] Figure 8 Shown is a perspective view of the tool holder assembly;

[0026] Fig. 9 Shown is a cross-sectional view of the tool holder assembly;

[0027] Fig.10 Shown is a schematic diagram of the internal structure of the tool holder assembly.

[0028] In the figure: 1, top plate; 2, cutting box; 3, feed port; 4, knife shaft; 5, cutting blade; 6, gasket; 7, edge knife assembly; 701, auxiliary edge knife; 702, guide edge knife; 8, small shaft; 9, thin knife; 10, first motor; 11, large sprocket; 12, small sprocket; 13, auxiliary sprocket; 14, tensioning wheel; 15, driven large gear; 16, driving large gear; 17, driven small gear; 18, driving small gear; 19, guide cover; 20, storage barrel; 21, driving structure; 22, feeding screw; 23, fixing plate; 24, heating box; 25, extrusion sleeve; 26, heating pipe; 27, fan; 28, second motor; 29, extrusion screw; 30, die head; 31, electric guide rail; 32. The third motor; 33. The tool holder assembly; 3301. The tool holder housing; 3302. The positioning wheel; 3303. The positioning frame; 3304. The first shock absorber; 3305. The positioning plate; 3306. The second shock absorber; 3307. The connecting plate; 3308. The bearing; 3309. The rotating plate; 3310. The strong magnetic part; 3311. The limiting ring buckle; 3312. The side frame; 3313. The auxiliary wheel; 3314. The spring telescopic rod; 3315. The sliding wheel; 3316. The third shock absorber; 3317. The limiting wheel; 3318. The positioning plate; 34. The cutting blade; 35. The pelletizing cover; 36. The blower; 37. The bottom plate; 38. The material box; 39. The moving roller; 40. The support column; 41. The oil pressure port. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical solution and advantages of the embodiments of the present invention more clear, the technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments.

[0030] Example 1

[0031] The present invention provides an oil pressure granulator for recycling polymer materials, such as Figure 1-10 As shown, it includes a bottom plate 37, the top of the bottom plate 37 is fixedly connected to a support column 40, the middle inner surface of the support column 40 is fixedly connected to a fixing plate 23, the middle of the fixing plate 23 is fixedly connected to an electric guide rail 31, the lower right end of the electric guide rail 31 is fixedly connected to a third motor 32, and the output end of the third motor 32 is fixedly connected to a tool holder assembly 33;

[0032] The tool holder assembly 33 includes a tool holder housing 3301 fixedly connected to the output end of the third motor 32, the inner side of the tool holder housing 3301 is rotatably connected to a positioning wheel 3302, the right end of the positioning wheel 3302 is rotatably connected to a positioning frame 3303, the inner side of the positioning frame 3303 is rotatably connected to a first shock absorber 3304, the other end of the first shock absorber 3304 is rotatably connected to a positioning plate 3305, the middle part of the left end of the positioning plate 3305 is fixedly connected to a second shock absorber 3306, the other end of the second shock absorber 3306 is fixedly connected to a connecting plate 3307, the inner side surface of the middle part of the left end of the connecting plate 3307 is fixedly connected to a bearing 3308, and the inner side surface of the bearing 3308 is rotatably connected to There is a rotating disk 3309, and a strong magnetic part 3310 is fixedly connected to the middle part of the left end of the rotating disk 3309. A limiting ring buckle 3311 is fixedly connected to the inner surface of the middle part of the left end of the connecting disk 3307, and the right end of the limiting ring buckle 3311 abuts against the left end of the strong magnetic part 3310. The right end edge of the connecting disk 3307 is fixedly connected to a side frame 3312, and the inner surface of the edge of the side frame 3312 is rotatably connected to an auxiliary wheel 3313, and the outer surface of the auxiliary wheel 3313 is in contact with the inner surface of the tool holder housing 3301. The left end of the side frame 3312 is fixedly connected to a spring telescopic rod 3314, and the other end of the spring telescopic rod 3314 is fixedly connected to a sliding wheel 3315, and the inner surface of the sliding wheel 3315 The surface is fixedly connected with a third shock absorber 3316, and the other end of the third shock absorber 3316 is fixedly connected with a limiting wheel 3317, and the outer surface of the limiting wheel 3317 abuts against the outer surface of the limiting ring buckle 3311. The inner end of the positioning frame 3303 is provided with a positioning plate 3318, and the outer surface of the tool holder shell 3301 is fixedly connected with a cutting blade 34. By providing the limiting ring buckle 3311, when the cutting blade 34 cuts the molten polymer, the tool holder shell 3301 can be fixed to the right end of the die head 30, and the tool holder shell 3301 is laterally damped by the second shock absorber 3306 and the first shock absorber 3304, and the limiting ring buckle 3311 is used to damp the tool holder shell 3301 laterally. The limiting shock absorption of the positioning ring 3311 and the auxiliary wheel 3313 abut against the inner wall of the tool holder housing 3301 to ensure that the sliding wheel 3315 is concentric with the tool holder housing 3301, thereby further offsetting the radial vibration, avoiding the cutting blade 34 from shaking significantly, improving the pelletizing effect and the overall service life, and at the same time, the second shock absorber 3306 and the spring telescopic rod 3314 offset the axial vibration generated by the tool holder housing 3301 during cutting, and provide shock absorption when the limiting ring 3311 contacts and separates from the die head 30, protecting the limiting ring 3311 to ensure that there will be no severe impact and pulling, thereby further improving the shock absorption effect and overall safety of use.

[0033] like Figure 1-10As shown, the top of the support column 40 is fixedly connected to the top plate 1, the upper end of the top plate 1 is fixedly connected to the cutting box 2, the upper end of the cutting box 2 is fixedly connected to the feed port 3, the cross section is an inverted trapezoid, and is used for the overall feeding of the device, the inner surface of the cutting box 2 is rotatably connected to the knife shaft 4, the outer surface of the knife shaft 4 is clamped with a plurality of cutting blades 5 and gaskets 6, the front and rear side surfaces of the cutting blade 5 are fitted with the front and rear side surfaces of the gasket 6, so that the cutting of the cutting blade 5 is stable and reliable, the interior of the cutting box 2 is provided with an edge knife assembly 7, and the inner surface of the cutting box 2 is rotatably connected to the small shaft 8. The outer surface of the small shaft 8 is fixedly connected with a plurality of washers 6 and thin knives 9. The front and rear side surfaces of the thin knives 9 fit with the front and rear side surfaces of the washers 6, which can further cut and crush the raw materials to ensure uniform crushing of the raw materials. The edge knife assembly 7 includes an auxiliary edge knife 701 and a guide edge knife 702 that are clamped with the inner surface of the cutting box 2. The auxiliary edge knife 701 is located between adjacent cutting blades 5, and the guide edge knife 702 is located on the outer side of the thin knife 9. By providing the auxiliary edge knife 701 and the guide edge knife 702, the reliability and stability of the cutting and crushing can be further improved. The upper right end of the first motor 10 is fixedly connected to the output end of the first motor 10, the small sprocket 12 is fixedly connected to the rear end of the right knife shaft 4, the rear end of the right small shaft 8 is fixedly connected to the auxiliary sprocket 13, the upper end of the top plate 1 is fixedly connected to the tensioning wheel 14, the large sprocket 11, the small sprocket 12, and the auxiliary sprocket 13 are connected by chain transmission, the outer surface of the tensioning wheel 14 fits with the outer surface of the chain, the chain can be fine-tuned before use to ensure the stability of the chain transmission, and the front ends of the 4 are fixedly connected to the driven large gears 15 The driven large gear 15 meshes with the outer surface of the driving large gear 16, and the front end of 8 is fixedly connected with the driven small gear 17 and the driving small gear 18 respectively. The outer surface of the driven small gear 17 and the driving small gear 18 meshes, which can ensure the stable rotation of the cutting blade 5 and the thin knife 9. By providing the cutting blade 5 and the thin knife 9, the cutting blade 5 and the thin knife 9 can complete the secondary cutting and crushing of the raw material by the cutting blade 5 and the thin knife 9 under the drive of the first motor 10 through the conduction of the large sprocket 11, the small sprocket 12 and the auxiliary sprocket 13, thereby ensuring the complete degree of crushing of the raw material.

[0034] like Figure 1-10As shown, the bottom end of the cutting box 2 is fixedly connected with a guide cover 19, and the bottom end of the guide cover 19 is fixedly connected with a storage barrel 20, which is convenient for collecting the crushed raw materials and improving the collection stability. The right end of the storage barrel 20 is fixedly connected with a driving structure 21, and the output end of the driving structure 21 is fixedly connected with a feeding screw 22. The upper left end of the fixed plate 23 is connected with a heating box 24, and the inner side of the heating box 24 is fixedly connected with an extrusion sleeve 25, and the outer side of the extrusion sleeve 25 is fixedly connected with a heating pipe 26, which can heat and melt the raw materials inside the extrusion sleeve 25. The front end of the fixed plate 23 is fixedly connected with two fans 27, which can quickly dissipate heat from the inside of the extrusion sleeve 25 to prevent heat from spreading to other parts, thereby improving the overall service life and safety of the device. The top left end of the top plate 1 is fixedly connected with a second motor 28, and the output end of the second motor 28 passes through the top plate 1 through a coupling and is fixedly connected with an extrusion screw 29, which can The melt inside the extrusion sleeve 25 is extruded to facilitate the stability of the quality of the finished product manufactured by the device. The bottom end of the extrusion sleeve 25 is fixedly connected with a die head 30. The right end of the die head 30 is in contact with the left end of the limiting ring buckle 3311. The right end of the die head 30 is in contact with the outer surface of the sliding wheel 3315. The left end of the die head 30 is provided with an oil pressure port 41, which is connected to an external oil pressure machine to ensure the stable discharge of the pellets. The left end of the middle part of the electric guide rail 31 is fixedly connected with a pelletizing cover 35. The right support A blower 36 is fixedly connected to the inner side of the support column 40, and the output end of the blower 36 is connected to the upper end of the pelletizing hood 35, which can quickly cool the molten material while cutting, thereby improving the quality of the finished product. A bottom plate 37 is fixedly connected to the bottom end of the support column 40, and a material box 38 is abutted against the top of the bottom plate 37, which is convenient for collecting and packing the finished products and improving the efficiency of discharging. A movable roller 39 is fixedly connected to the upper edge of the bottom plate 37, which is convenient for the overall movement and position adjustment of the device.

[0035] Working principle: When in use, the chain is tightened by the tension wheel 14, and the electric guide rail 31 can drive the third motor 32 and the cutting blade 34 to move, so as to facilitate the replacement of the cutting blade 34. The electric guide rail 31 is started to drive the strong magnetic part 3310 to abut the die head 30, and is adsorbed and fixed to the die head 30 until the pelletizing cover 35 abuts the die head 30. By setting a limiting ring buckle 3311, the cutter housing 3301 can be fixed to the right end of the die head 30 when the cutting blade 34 cuts the molten polymer. The cutter housing 3301 is laterally damped and positioned by the first shock absorber 3304 to ensure that the position of the connecting plate 3307 is aligned with the outer surface of the cutter housing. The shell 3301 is concentric with the tool holder shell 3301, and the third shock absorber 3316 is used to limit the shock absorption of the limit ring buckle 3311 and the auxiliary wheel 3313 is abutted against the inner wall of the tool holder shell 3301 to ensure that the sliding wheel 3315 is concentric with the tool holder shell 3301, thereby further offsetting the radial vibration, avoiding the cutting blade 34 from shaking significantly, and improving the pelletizing effect and the overall service life. At the same time, the second shock absorber 3306 and the spring telescopic rod 3314 offset the axial vibration generated by the tool holder shell 3301 during cutting, and provide shock absorption when the limit ring buckle 3311 contacts and separates from the die head 30, protect the limit ring buckle 3311, and ensure There will be no violent impact and pulling, thereby further improving the shock absorption effect and overall safety of use. The first motor 10 is started, and the output end of the first motor 10 drives the large sprocket 11 to rotate, and the raw material is poured from the feed port 3. The cutting blade 5 and the thin knife 9 complete the secondary cutting and crushing of the raw material through the conduction of the large sprocket 11, the small sprocket 12 and the auxiliary sprocket 13, ensuring the complete degree of crushing of the raw material. At the same time, by providing the auxiliary side knife 701 and the guide side knife 702, the reliability and stability of the cutting and crushing can be further improved. The driving structure 21 is started, and the output end of the driving structure 21 drives the feeding screw 22 to feed the raw material into the extrusion sleeve 2 5, the heating tube 26 is started to melt the raw material in the extrusion sleeve 25, and the fan 27 is started synchronously to dissipate heat to the fixing plate 23 and the heating box 24 when the heating tube 26 heats the raw material, so as to prevent the heat from spreading to other parts and improve the overall service life and safety of the device, and the second motor 28 is started. The output end of the second motor 28 drives the extrusion screw 29 to rotate, and the melt is extruded from the die head 30, and the third motor 32 is started to drive the cutting blade 34 to cut the melt, and the blower 36 is started synchronously to quickly cool the melt in the pelletizing cover 35, and the finished product is collected by the material box 38 to complete the granulation.

[0036] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them.

Claims

1. A hydraulic granulator for polymer material recycling, characterized in that: It comprises a bottom plate (37), the top end of the bottom plate (37) is fixedly connected to a support column (40), the middle inner surface of the support column (40) is fixedly connected to a fixing plate (23), the middle of the fixing plate (23) is fixedly connected to an electric guide rail (31), the lower right end of the electric guide rail (31) is fixedly connected to a third motor (32), and the output end of the third motor (32) is fixedly connected to a tool holder assembly (33); The tool holder assembly (33) comprises a tool holder housing (3301) fixedly connected to the output end of the third motor (32); a positioning wheel (3302) is rotatably connected to the inner side of the tool holder housing (3301); a positioning frame (3303) is rotatably connected to the right end of the positioning wheel (3302); a first shock absorber (3304) is rotatably connected to the inner side of the positioning frame (3303); and a positioning plate (3305) is rotatably connected to the other end of the first shock absorber (3304). ), a second shock absorber (3306) is fixedly connected to the middle of the left end of the positioning plate (3305), a connecting disk (3307) is fixedly connected to the other end of the second shock absorber (3306), a bearing (3308) is fixedly connected to the inner surface of the middle of the left end of the connecting disk (3307), a rotating disk (3309) is rotatably connected to the inner surface of the bearing (3308), and a strong magnetic component (3310) is fixedly connected to the middle of the left end of the rotating disk (3309); The inner surface of the middle part of the left end of the connecting disk (3307) is fixedly connected to a limiting ring buckle (3311), the right end of the limiting ring buckle (3311) is in contact with the left end of the strong magnetic component (3310), the right end edge of the connecting disk (3307) is fixedly connected to a side frame (3312), the inner surface of the edge of the side frame (3312) is rotatably connected to an auxiliary wheel (3313), the outer surface of the auxiliary wheel (3313) is in contact with the inner surface of the tool holder housing (3301), and the left end of the side frame (3312) is fixedly connected to a spring telescopic rod (3314). ), the other end of the spring telescopic rod (3314) is fixedly connected to a sliding wheel (3315), the inner surface of the sliding wheel (3315) is fixedly connected to a third shock absorber (3316), the other end of the third shock absorber (3316) is fixedly connected to a limiting wheel (3317), the outer surface of the limiting wheel (3317) is in contact with the outer surface of the limiting ring buckle (3311), the inner end of the positioning frame (3303) is provided with a locking plate (3318), and the outer surface of the tool holder housing (3301) is fixedly connected to a cutting blade (34).

2. The hydraulic granulator for polymer material recycling according to claim 1, characterized in that: The top end of the support column (40) is fixedly connected to a top plate (1), the upper end of the top plate (1) is fixedly connected to a cutting box (2), the upper end of the cutting box (2) is fixedly connected to a feed port (3), the inner surface of the cutting box (2) is rotatably connected to a knife shaft (4), the outer surface of the knife shaft (4) is clamped with a plurality of cutting blades (5) and washers (6), the front and rear side surfaces of the cutting blades (5) are in contact with the front and rear side surfaces of the washers (6), a side knife assembly (7) is arranged inside the cutting box (2), the inner surface of the cutting box (2) is rotatably connected to a small shaft (8), the outer surface of the small shaft (8) is fixedly connected to a plurality of washers (6) and a thin knife (9), the front and rear side surfaces of the thin knife (9) are in contact with the front and rear side surfaces of the washers (6).

3. The hydraulic granulator for polymer material recycling according to claim 2, characterized in that: The edge knife assembly (7) comprises an auxiliary edge knife (701) and a guide edge knife (702) which are clamped to the inner surface of the cutting box (2); the auxiliary edge knife (701) is located between adjacent cutting blades (5), and the guide edge knife (702) is located outside the thin knife (9).

4. The hydraulic granulator for polymer material recycling according to claim 2, characterized in that: The upper right end of the top plate (1) is fixedly connected to a first motor (10), the output end of the first motor (10) is fixedly connected to a large sprocket (11), the rear end of the knife shaft (4) on the right side is fixedly connected to a small sprocket (12), the rear end of the small shaft (8) on the right side is fixedly connected to an auxiliary sprocket (13), the upper end of the top plate (1) is fixedly connected to a tensioning wheel (14), the large sprocket (11), the small sprocket (12) and the auxiliary sprocket (13) are connected by chain transmission, the outer surface of the tensioning wheel (14) is in contact with the outer surface of the chain, the front end of the knife shaft (4) is respectively fixedly connected to a driven large gear (15) and a driving large gear (16), the outer surfaces of the driven large gear (15) and the driving large gear (16) are meshed, the front end of the small shaft (8) is respectively fixedly connected to a driven small gear (17) and a driving small gear (18), the outer surfaces of the driven small gear (17) and the driving small gear (18) are meshed.

5. The hydraulic granulator for polymer material recycling according to claim 2, characterized in that: The bottom end of the cutting box (2) is fixedly connected to a guide cover (19), the bottom end of the guide cover (19) is fixedly connected to a storage barrel (20), the right end of the storage barrel (20) is fixedly connected to a drive structure (21), and the output end of the drive structure (21) is fixedly connected to a feeding screw (22).

6. The hydraulic granulator for polymer material recycling according to claim 2, characterized in that: The upper left end of the fixed plate (23) is connected to a heating box (24), the inner side of the heating box (24) is fixedly connected to an extrusion sleeve (25), the outer side of the extrusion sleeve (25) is fixedly connected to a heating pipe (26), and the front end of the fixed plate (23) is fixedly connected to two fans (27).

7. The hydraulic granulator for polymer material recycling according to claim 6, characterized in that: A second motor (28) is fixedly connected to the top left end of the top plate (1); an output end of the second motor (28) passes through the top plate (1) through a coupling and is fixedly connected to an extrusion screw (29); a die head (30) is fixedly connected to the bottom end of the extrusion sleeve (25); a right end of the die head (30) is in contact with a left end of a limiting ring buckle (3311); a right end of the die head (30) is in contact with an outer surface of a sliding wheel (3315); and a hydraulic port (41) is provided at the left end of the die head (30).

8. The hydraulic granulator for polymer material recycling according to claim 1, characterized in that: A pelletizing cover (35) is fixedly connected to the left end of the middle part of the electric guide rail (31), a blower (36) is fixedly connected to the inner side of the right support column (40), an output end of the blower (36) is connected to the upper end of the pelletizing cover (35) by a pipe, a bottom plate (37) is fixedly connected to the bottom end of the support column (40), a material box (38) is abutted against the top end of the bottom plate (37), and a movable roller (39) is fixedly connected to the upper edge of the bottom plate (37).

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