Defective product and waste product crushing and granulating device of injection molding machine

Abstract

The invention discloses an injection molding machine inferior-quality product waste crushing and granulating device, and relates to the field of plastic recovery crushing and granulating machines, the injection molding machine inferior-quality product waste crushing and granulating device comprises a treatment box with a feed inlet, an extrusion plate is arranged in the treatment box, a discharge outlet is formed in the surface of the treatment box, and a latticed first cutting tool is fixedly mounted in the treatment box. According to the injection molding machine defective product and waste product crushing and granulating device, a first cutting tool and a second cutting tool are arranged, defective product and waste products are placed in the treatment box through a feeding opening, the high-temperature first cutting tool softens the defective product and waste products, and at the moment, an extrusion plate moves to extrude the defective product and waste products; defective products and waste products penetrate through the first cutting tool to be in a strip shape, then the second cutting tool cuts the treated defective products and waste products at a certain frequency, meanwhile, the defective products and waste products are rapidly cooled at low temperature, adhesion of the defective products and waste products is prevented, in the process, the raw material defective products and waste products do not need to be treated in advance, and the crushing and granulating efficiency is greatly improved.

Description

Technical Field

[0001] The invention relates to the field of plastic recycling crushing and granulating machines, in particular to a crushing and granulating device for defective waste products of injection molding machines. Background Art

[0002] Injection molding machines are the main molding equipment that uses plastic molding molds to make plastic products of various shapes from thermoplastics or thermosetting plastics. When producing injection molded parts such as engine hoods or intake manifolds, the corresponding molds are usually replaced on the injection molding machine, and then the raw materials are squeezed into the mold. During the production process, various problems may cause defective or waste products. In order to reduce cost waste and save resources, staff usually recycle defective and waste products, cut them into the required particle size, and put them back into the injection molding machine for injection molding production.

[0003] A Chinese patent with patent number CN 202111505708.9 discloses a plastic recycling and granulation device. First, the defective plastic waste is placed inside the feed box. With the help of the power of the telescopic motor, the extrusion seat squeezes the waste plastic parts of different shapes and sizes into plates. The plate-shaped defective plastic waste falls into the inside of the processing box for cutting and processing. During use, the defective waste needs to be squeezed before it is crushed, resulting in a long processing time. In addition, since the defective waste needs to be heated during the extrusion molding process, if the volume of the defective waste is large, the heating time will be longer, which seriously affects the efficiency of crushing and granulation. Summary of the invention

[0004] The main purpose of the present invention is to provide a device for crushing and granulating defective and waste products of an injection molding machine, which can effectively solve the problems in the background technology.

[0005] To achieve the above-mentioned purpose, the technical solution adopted by the present invention is: a device for crushing and granulating defective waste of an injection molding machine, comprising a processing box, a feed port is opened on the surface of the processing box, an extrusion plate is arranged inside the processing box, a discharge port is opened on the surface of the processing box, a first grid-shaped cutting tool is fixedly installed inside the processing box, the installation height of the first cutting tool is lower than the feed port, a heating component is arranged inside the first cutting tool to increase the temperature of the first cutting tool, a second cutting tool is installed inside the processing box, the second cutting tool is located below the first cutting tool, and a refrigeration component is installed inside the second cutting tool to reduce the surface temperature of the second cutting tool.

[0006] The surface of the first cutting tool is provided with cavities staggered in horizontal and vertical directions, and resistance wires are installed inside the cavities. The resistance wires are staggered in horizontal and vertical directions inside the cavities. A source supply device is installed on the surface of the first cutting tool for supplying power to the resistance wires.

[0007] The processing box is configured as a rectangular structure with a hollow interior. The second cutting tool is arranged horizontally, and its moving direction is perpendicular to the axial direction. The number of the second cutting tools is set to two, and a connecting rod is installed between the two second cutting tools. The refrigeration component is installed and connected to the connecting rod. A moving component is installed inside the processing box to move the connecting rod.

[0008] The movable component includes a mounting frame fixedly sleeved on the surface of the processing box, the interior of the mounting frame is hollow and connected to the interior of the processing box, the two ends of the connecting rod extend to the two sides of the interior of the mounting frame, the front and back sides of the two ends of the connecting rod are installed with permanent magnets, and electromagnets are installed at the positions of the permanent magnets at the corners inside the mounting frame. A power supply device is installed on the surface of the mounting frame for providing alternating positive and negative currents to the electromagnets, and a buffer component is arranged inside the mounting frame.

[0009] The buffer assembly includes four supporting springs, cross bars are fixedly installed on both sides of the installation frame, the cross bars movably pass through the ends of the connecting rods, the supporting springs are fixed on the surface of one end of the cross bars, one end of the supporting springs is fixed inside the installation frame, and buffer cotton is installed on the front and back sides of both ends of the connecting rods.

[0010] The connecting rod is made of a material with good thermal conductivity, the interior of the connecting rod is hollow, an air guide tube is fixedly installed on the surface of the connecting rod, a slide groove is opened on the surface of the installation frame, and the air guide tube movably passes through the slide groove.

[0011] The processing box is configured to be a cylindrical shape with a hollow interior, the middle part of the first cutting tool is sealed and raised, a rotating tube is movably installed inside the processing box, a plurality of second cutting tools are provided, an annular array is fixed on the surface of the rotating tube, connecting rings are fixed on the ends of the blades of the plurality of second cutting tools, an annular groove is provided inside the processing box, the connecting ring is clamped inside the annular groove, the refrigeration component is connected to the interior of the rotating tube, and a driving component is installed on the surface of the processing box for rotating the rotating tube.

[0012] The driving assembly includes a driving motor, one end of the rotating tube is movably mounted on the surface of the first cutting tool, the other end of the rotating tube is movably inserted through the processing box, the connecting positions of the rotating tube, the first cutting tool and the processing box are fixedly connected by mounting bearings, the driving motor is fixed to the bottom of the processing box by a mounting frame, the output shaft surfaces of the rotating tube and the driving motor are fixedly sleeved with gears, and the two gears are meshed.

[0013] The refrigeration component comprises a sealing bearing, which is fixed inside the rotating tube, and an air inlet pipe is fixedly installed inside the sealing bearing.

[0014] Ventilation holes are provided on the surfaces of the connecting rod or the rotating tube.

[0015] Compared with the prior art, the present invention has the following beneficial effects: In the present invention, by setting a first cutting tool and a second cutting tool, the defective waste is placed into the interior of the processing box through the feed port, the high-temperature first cutting tool softens the defective waste, and the extrusion plate moves to extrude the defective waste at this time. The defective waste passes through the first cutting tool and becomes strips, and then the second cutting tool cuts the processed defective waste at a certain frequency, and at the same time, the low temperature quickly cools the defective waste to prevent the defective waste from sticking. In this process, there is no need to pre-process the raw material defective waste, which greatly improves the efficiency of crushing and granulation. In the present invention, by providing a connecting rod, a second cutting tool and an air vent, cold air is introduced into the air duct, and the cold air enters the interior of the connecting rod to quickly cool down the second cutting tool. At the same time, the gas is discharged from the position of the air vent. Since the air vent is directed downward, the bottom of the connecting rod is also in a low temperature state, and the defective waste products that have been cut can be cooled for the second time, thereby preventing the defective waste particles from sticking to each other and ensuring a better cutting effect. In the present invention, by setting an electromagnet and a permanent magnet, when the electromagnet is energized, it can quickly make the electromagnet magnetic, attract or repel the movement of the permanent magnet, and the permanent magnet quickly drives the connecting rod to move, thereby driving the movement of the second cutting tool. The magnetism can be used to increase the movement speed as much as possible, thereby ensuring that the defective waste particles cut out are of the same size. In the present invention, by providing support springs and buffer cotton, the electromagnet can achieve rapid movement, but the faster the speed, the greater the kinetic energy generated by its movement. When the connecting rod moves to the inside of the mounting frame, the greater the damage caused to it. Therefore, a part of the kinetic energy is "offset" by the support springs and buffer cotton to ensure the service life of the connecting rod and the second cutting tool. In the present invention, a driving motor and a gear are provided, the driving motor is started, and the engagement of the two gears causes the rotating tube to rotate, thereby realizing the rotation of the second cutting tool, and the defective waste can be quickly cut. Compared with electromagnetic control, the driving motor control is more mature and stable. At the same time, since a large number of second cutting tools are provided, the time interval between each cutting is shorter, thereby ensuring that the defective waste particles cut are closer in size. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1It is a schematic diagram of the overall structure of a device for crushing and granulating defective waste products of an injection molding machine according to the present invention; Figure 2 It is a schematic diagram of the structure of the chute position of a device for crushing and granulating defective waste of an injection molding machine according to the present invention; Figure 3 It is a schematic diagram of the structure of the power supply device of a device for crushing and granulating defective waste of an injection molding machine according to the present invention; Figure 4 It is a partial structural schematic diagram of the position of the second cutting tool of a device for crushing and granulating defective waste of an injection molding machine according to the present invention; Figure 5 It is a schematic diagram of the structure of the electromagnet position of a device for crushing and granulating defective waste products of an injection molding machine according to the present invention; Figure 6 It is a partial structural schematic diagram of the vent hole position of a device for crushing and granulating defective waste of an injection molding machine according to the present invention; Figure 7 It is a schematic diagram of the structure of the cavity position of a device for crushing and granulating defective waste products of an injection molding machine according to the present invention; Figure 8 It is a schematic diagram of the structure of the first cutting tool position of a device for crushing and granulating defective waste of an injection molding machine according to the present invention; Fig. 9 It is a schematic diagram of the gear position structure of a device for crushing and granulating defective waste products of an injection molding machine according to the present invention; Fig.10 It is a schematic diagram of the structure of the connection ring position of a device for crushing and granulating defective and waste products of an injection molding machine according to the present invention; Fig.11 It is a schematic diagram of the structure of the annular groove position of a device for crushing and granulating defective waste of an injection molding machine according to the present invention; Fig.12 This is a partial structural schematic diagram of the extrusion plate position of a device for crushing and granulating defective waste products of an injection molding machine according to the present invention.

[0017] In the figure: 1. processing box; 2. feed port; 3. extrusion plate; 4. discharge port; 5. first cutting tool; 6. second cutting tool; 7. cavity; 8. resistance wire; 9. source supply device; 10. connecting rod; 11. mounting frame; 12. permanent magnet; 13. electromagnet; 14. power supply device; 15. support spring; 16. cross bar; 17. buffer cotton; 18. air guide tube; 19. slide groove; 20. rotating tube; 21. driving motor; 22. mounting frame; 23. gear; 24. sealed bearing; 25. air inlet pipe; 26. vent hole; 27. connecting ring; 28. annular groove. DETAILED DESCRIPTION

[0018] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0019] A device for crushing and granulating defective and waste products of an injection molding machine, including the following two embodiments: Example

[0020] The device for crushing and granulating defective waste of injection molding machine includes a processing box 1, such as Figure 1-2 As shown, the processing box 1 is set as a rectangular structure with a hollow interior, a feed inlet 2 is provided on the surface of the processing box 1, an extrusion plate 3 is provided inside the processing box 1, and the shape of the extrusion plate 3 is adapted to the shape of the inner wall of the processing box 1, an electric push rod is provided on the top of the processing box 1, and the extrusion plate 3 is moved from top to bottom by the electric push rod to extrude the defective waste, a discharge port 4 is provided on the surface of the processing box 1, and the defective waste enters from the position of the feed inlet 2 and is discharged from the position of the discharge port 4, and a grid-shaped first cutting tool 5 is fixedly installed inside the processing box 1, as shown in FIG. Figure 3 As shown, the installation height of the first cutting tool 5 is lower than the feed port 2. When defective waste is put in from the feed port 2, it will fall onto the surface of the first cutting tool 5. A heating component is arranged inside the first cutting tool 5 to increase the temperature of the first cutting tool 5 until the temperature rises to a level that can soften the defective waste. A second cutting tool 6 is installed inside the processing box 1. The second cutting tool 6 is located below the first cutting tool 5 to perform secondary cutting on the defective waste. A refrigeration component is arranged inside the second cutting tool 6 to reduce the surface temperature of the second cutting tool 6, quickly cool the cut defective waste, and prevent it from sticking to the surface of the second cutting tool 6.

[0021] Before use, the heating component must be turned on first so that the first cutting tool 5 is heated to a suitable temperature. At the same time, the refrigeration component is also turned on so that the second cutting tool 6 is lowered to a suitable temperature. The defective waste is placed into the processing box 1 through the feed port 2. The high-temperature first cutting tool 5 softens the defective waste. At this time, the extrusion plate 3 moves to extrude the defective waste. The defective waste passes through the first cutting tool 5 and becomes strips. Then the second cutting tool 6 cuts the processed defective waste at a certain frequency. Since the defective waste has been softened, the second cutting tool 6 is easier to process the defective waste. At the same time, the low temperature quickly cools the defective waste to prevent the defective waste from sticking. The defective waste falls to the bottom of the processing box 1. The bottom of the processing box 1 is inclined, and the position close to the discharge port 4 is lower. In this process, there is no need to pre-process the raw material defective waste, which greatly improves the efficiency of crushing and granulation.

[0022] The surface of the first cutting tool 5 is provided with cavities 7 which are staggered in both horizontal and vertical directions, and the shape of the cavities 7 is adapted to the shape of the processing box 1. Resistance wires 8 are installed inside the cavities 7, and the resistance wires 8 are staggered in both horizontal and vertical directions inside the cavities 7. A source supply device 9 is installed on the surface of the first cutting tool 5 for supplying power to the resistance wires 8. The resistance generates heat energy when energized, thereby heating the first cutting tool 5. At the same time, the greater the current, the more heat is generated.

[0023] The second cutting tool 6 is arranged horizontally, and its moving direction is perpendicular to the axial direction, that is, perpendicular to the axial direction of the strip-shaped defective waste. The number of the second cutting tools 6 is set to two, and a connecting rod 10 is installed between the two second cutting tools 6. The connecting rod 10 is made of a material with good thermal conductivity. The interior of the connecting rod 10 is arranged hollow, and an air duct 18 is fixedly installed on the surface of the connecting rod 10. The interior of the air duct 18 is used to transmit cold air. The surface of the processing box 1 is provided with a mounting frame 11, and the interior of the mounting frame 11 is hollow and communicated with the interior of the processing box 1. The surface of the mounting frame 11 is provided with a slide groove 19, such as Figure 2 As shown, the slide slot 19 is located directly below the mounting frame 11, the air guide pipe 18 movably passes through the slide slot 19, and a vent hole 26 is provided on the surface of the connecting rod 10. Figure 6 As shown, the vent hole 26 faces downward on the inner wall of the processing box 1 .

[0024] The second cutting tool 6 cuts the defective waste products horizontally, and the second cutting tools 6 on both sides of the connecting rod 10 cut the defective waste products back and forth to ensure cutting efficiency. The end of the air duct 18 can be connected to a hose, which has good deformation ability and will not affect the movement of the second cutting tool 6. Cold air is passed into the inside of the air duct 18, and the cold air enters the inside of the connecting rod 10. Since the connecting rod 10 has a good thermal conductivity, the second cutting tool 6 can be quickly cooled. At the same time, the gas is discharged from the position of the vent 26. Since the vent 26 is directed downward, the bottom of the connecting rod 10 is also in a low temperature state, and the defective waste products that have been cut can be cooled for a second time, thereby preventing the defective waste particles from sticking to each other and ensuring a better cutting effect.

[0025] The two ends of the connecting rod 10 extend to the two sides of the inside of the installation frame 11. During installation, ensure that the length of the second cutting tool 6 is equal to the width of the inner wall of the processing box 1, so that each part can be cut by the second cutting tool 6. Figure 2 As shown, permanent magnets 12 are installed on the front and back sides of both ends of the connecting rod 10, and electromagnets 13 are installed at the positions of the permanent magnets 12 at the inner corners of the mounting frame 11. When the electromagnets 13 are energized to become magnetic, they can attract or repel the permanent magnets 12. A power supply device 14 is installed on the surface of the mounting frame 11 to provide the electromagnets 13 with alternating positive and negative currents, thereby changing the polarity of the electromagnets 13 and reducing damage to the electromagnets 13 and the permanent magnets 12.

[0026] Since the defective waste products are constantly decreasing during the extrusion process of the extruded plate 3, the second cutting tool 6 is required to quickly cut the defective waste products. When the electromagnet 13 is energized, it can quickly make the electromagnet 13 magnetic, attracting or repelling the movement of the permanent magnet 12. The permanent magnet 12 quickly drives the connecting rod 10 to move, thereby driving the movement of the second cutting tool 6. Compared with the traditional movement method, the use of magnetism can increase the movement speed as much as possible, thereby ensuring that the defective waste products cut out have the same size particles.

[0027] Crossbars 16 are fixedly installed on both sides of the interior of the mounting frame 11. Figure 5 As shown, the cross bar 16 also has a guiding function to ensure that the moving direction of the second cutting tool 6 is stable. The cross bar 16 movably passes through the end of the connecting rod 10. The support spring 15 is fixed on the surface of one end of the cross bar 16. One end of the support spring 15 is fixed inside the mounting frame 11. Buffer cotton 17 is installed on the front and back sides of both ends of the connecting rod 10. Although rapid movement can be achieved through electromagnetism, the faster the speed, the greater the kinetic energy generated by the movement. When the connecting rod 10 moves to the inside of the mounting frame 11, the greater the damage to it. Therefore, part of the kinetic energy is "offset" by the support spring 15 and the buffer cotton 17 to ensure the service life of the connecting rod 10 and the second cutting tool 6. Example

[0028] The device for crushing and granulating defective waste of injection molding machine includes a processing box 1, such as Figure 8-9 As shown, an electric push rod is arranged on the top of the processing box 1, and the extrusion plate 3 is moved from top to bottom by the electric push rod to extrude the defective waste. The processing box 1 is arranged to be a hollow cylindrical shape inside. The shape of the first cutting tool 5 is adapted to the shape of the inner wall of the processing box 1. The middle part of the first cutting tool 5 is sealed and raised to prevent the defective waste from falling on the sealed position, resulting in omissions in cutting. A rotating tube 20 is movably installed inside the processing box 1. The rotating tube 20 is located in the middle position of the first cutting tool 5. The number of the second cutting tools 6 is set to be multiple, and the annular array is fixed on the surface of the rotating tube 20, as shown in FIG. Fig.10 As shown, a connecting ring 27 is fixedly mounted on the blade ends of the plurality of second cutting tools 6, an annular groove 28 is provided inside the processing box 1, the connecting ring 27 is stuck inside the annular groove 28, the refrigeration component is connected to the inside of the rotating tube 20, and a driving component is installed on the surface of the processing box 1 for rotating the rotating tube 20.

[0029] When the defective waste falls onto the surface of the first cutting tool 5, the extrusion plate 3 performs an extrusion treatment on it. As in Example 1, the heating component inside the first cutting tool 5 increases its surface temperature to soften the defective waste. When the defective waste is cut into strips at one time, the driving component drives the rotating tube 20 to rotate, thereby realizing the rotation of the second cutting tool 6, and the defective waste can be quickly cut. The rotation can be achieved by a motor. Compared with electromagnetic control, motor control is more mature and stable. However, since the shape of the processing box 1 is cylindrical and sealed in the middle, the shape of the defective waste it cuts is relatively limited, which affects the cutting effect. Users can make a choice based on actual conditions.

[0030] The driving assembly includes a driving motor 21. One end of the rotating tube 20 is movably installed on the surface of the first cutting tool 5. The other end of the rotating tube 20 is movably installed through the processing box 1. The connecting positions of the rotating tube 20, the first cutting tool 5 and the processing box 1 are fixedly connected by installing bearings. The driving motor 21 is fixed to the bottom of the processing box 1 through a mounting frame 22. The output shaft surfaces of the rotating tube 20 and the driving motor 21 are fixedly sleeved with gears 23. The two gears 23 are meshed, and the driving motor 21 is started. The rotating tube 20 is rotated through the meshing of the two gears 23, thereby realizing the rotation of the second cutting tool 6.

[0031] The refrigeration assembly includes a sealed bearing 24, such as Fig. 9 As shown, the sealed bearing 24 is fixed inside the rotating tube 20, and the surface of the rotating tube 20 is provided with air vents 26. An air inlet pipe 25 is fixedly installed inside the sealed bearing 24, and cold air is passed into the air inlet pipe 25. The sealed bearing 24 can reduce the leakage of cold air. At the same time, when the gas enters the inside of the rotating tube 20 from the air inlet pipe 25, it is discharged from the inside of the air vent 26, ensuring a low temperature environment at the bottom of the inner wall of the processing box 1, and performing secondary cooling on the granular defective waste.

[0032] It should be noted that the present invention is a device for crushing and granulating defective waste of an injection molding machine. When in use, the power supply device 9 is turned on to supply power to the resistance wire 8. The resistance generates heat energy when energized, thereby heating the first cutting tool 5, so that the first cutting tool 5 is heated to a suitable temperature. At the same time, cold air is introduced into the air inlet pipe 25 or the air guide pipe 18, so that the second cutting tool 6 is lowered to a suitable temperature. The cold air is discharged from the position of the vent hole 26 to ensure a low temperature environment at the bottom of the inner wall of the processing box 1. The defective waste is placed from the feed port 2 to the upper surface of the first cutting tool 5. The high-temperature first cutting tool 5 softens the defective waste. The extrusion plate 3 moves to extrude the defective waste. The defective waste passes through the first cutting tool 5 and becomes strips. Then the second cutting tool 6 cuts the processed defective waste at a certain frequency. Different cutting methods can be selected at this time. First, the electromagnet 13 is energized. The electromagnet 13 can be quickly made magnetic to attract or repel the movement of the permanent magnet 12. The permanent magnet 12 quickly drives the connecting rod 10 to move, thereby driving the movement of the second cutting tool 6. The magnetism can increase the moving speed as much as possible, thereby ensuring that the defective waste particles cut out are of the same size. Secondly, the driving motor 21 is started, and the rotating tube 20 is rotated through the engagement of the two gears 23, thereby realizing the rotation of the second cutting tool 6 to cut the defective waste. Since the defective waste has been softened, the second cutting tool 6 is easier to process the defective waste. At the same time, the low temperature quickly cools the defective waste to prevent the defective waste from sticking. The defective waste falls to the bottom of the processing box 1, and the cold air at the bottom performs secondary cooling on the defective waste after cutting, thereby preventing the defective waste particles from sticking to each other and ensuring a better cutting effect. Finally, the defective waste particles are discharged from the position of the discharge port 4.

[0033] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A device for crushing and granulating defective waste products of an injection molding machine, comprising a processing box (1), a feed inlet (2) is provided on the surface of the processing box (1), an extrusion plate (3) is arranged inside the processing box (1), and a discharge port (4) is provided on the surface of the processing box (1), characterized in that: A first grid-shaped cutting tool (5) is fixedly installed inside the processing box (1), the first cutting tool (5) is installed at a height lower than the feed port (2), a heating component is arranged inside the first cutting tool (5) for increasing the temperature of the first cutting tool (5), a second cutting tool (6) is installed inside the processing box (1), the second cutting tool (6) is located below the first cutting tool (5), and a cooling component is arranged inside the second cutting tool (6) for reducing the surface temperature of the second cutting tool (6).

2. The device for crushing and granulating defective and waste products of an injection molding machine according to claim 1, characterized in that: The surface of the first cutting tool (5) is provided with cavities (7) arranged in a horizontal and vertical pattern, and resistance wires (8) are installed inside the cavities (7). The resistance wires (8) are arranged in a horizontal and vertical pattern inside the cavities (7), and a power supply device (9) is installed on the surface of the first cutting tool (5) for supplying power to the resistance wires (8).

3. The device for crushing and granulating defective and waste products of an injection molding machine according to claim 2, characterized in that: The processing box (1) is configured as a rectangular structure with a hollow interior. The second cutting tool (6) is arranged horizontally, and its moving direction is perpendicular to the axial direction. The number of the second cutting tools (6) is set to two, and a connecting rod (10) is installed between the two second cutting tools (6). The refrigeration component is installed and connected to the connecting rod (10). A moving component is installed inside the processing box (1) for moving the connecting rod (10).

4. The device for crushing and granulating defective and waste products of an injection molding machine according to claim 3, characterized in that: The moving component comprises a mounting frame (11) fixedly sleeved on the surface of the processing box (1); the interior of the mounting frame (11) is hollow and communicates with the interior of the processing box (1); the two ends of the connecting rod (10) extend to the two sides of the interior of the mounting frame (11); the front and back surfaces of the two ends of the connecting rod (10) are both mounted with permanent magnets (12); an electromagnet (13) is mounted at a position corresponding to the permanent magnet (12) at a corner inside the mounting frame (11); a power supply device (14) is mounted on the surface of the mounting frame (11) for providing the electromagnet (13) with alternating positive and negative currents; and a buffer component is arranged inside the mounting frame (11).

5. The device for crushing and granulating defective and waste products of an injection molding machine according to claim 4, characterized in that: The buffer assembly comprises four support springs (15), cross bars (16) are fixedly mounted on both sides of the interior of the installation frame (11), the cross bars (16) movably penetrate the ends of the connecting rods (10), the support springs (15) are fixed to the surface of one end of the cross bars (16), one end of the support springs (15) is fixed to the interior of the installation frame (11), and buffer cotton (17) is mounted on the front and back sides of both ends of the connecting rods (10).

6. The device for crushing and granulating defective and waste products of an injection molding machine according to claim 3, characterized in that: The connecting rod (10) is made of a material with good thermal conductivity. The interior of the connecting rod (10) is hollow. An air guide tube (18) is fixedly mounted on the surface of the connecting rod (10). A slide groove (19) is provided on the surface of the mounting frame (11). The air guide tube (18) movably passes through the slide groove (19).

7. The device for crushing and granulating defective and waste products of an injection molding machine according to claim 2, characterized in that: The processing box (1) is configured to be a cylindrical shape with a hollow interior. The middle portion of the first cutting tool (5) is sealed and raised. A rotating tube (20) is movably installed inside the processing box (1). A plurality of second cutting tools (6) are provided, and an annular array is fixed on the surface of the rotating tube (20). Connecting rings (27) are fixedly installed on the ends of the blades of the plurality of second cutting tools (6). An annular groove (28) is provided inside the processing box (1). The connecting ring (27) is stuck inside the annular groove (28). The refrigeration component is connected to the interior of the rotating tube (20). A driving component is installed on the surface of the processing box (1) for rotating the rotating tube (20).

8. The device for crushing and granulating defective and waste products of an injection molding machine according to claim 7, characterized in that: The driving assembly comprises a driving motor (21); one end of the rotating tube (20) is movably mounted on the surface of the first cutting tool (5); the other end of the rotating tube (20) movably penetrates the processing box (1); the connecting positions of the rotating tube (20) with the first cutting tool (5) and the processing box (1) are fixedly connected via mounting bearings; the driving motor (21) is fixed to the bottom of the processing box (1) via a mounting frame (22); the output shaft surfaces of the rotating tube (20) and the driving motor (21) are fixedly sleeved with gears (23); and the two gears (23) are meshed.

9. The device for crushing and granulating defective and waste products of an injection molding machine according to claim 8, characterized in that: The refrigeration component comprises a sealing bearing (24), the sealing bearing (24) being fixed inside the rotating tube (20), and an air intake pipe (25) being fixedly mounted inside the sealing bearing (24).

10. The device for crushing and granulating defective and waste products of an injection molding machine according to claim 6 or 7, characterized in that: Ventilation holes (26) are provided on the surfaces of the connecting rod (10) or the rotating tube (20).

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