A device for recycling residual materials of motor injection molding parts

Abstract

The present invention relates to the technical field of recycling injection molding waste materials, specifically to a device for recycling waste materials of motor injection molding accessories, comprising: an exhaust cylinder, an inner cavity of the exhaust cylinder is installed with a screening plate 1 and a screening plate 2, and the surfaces of the two plates are respectively provided with screening holes of different sizes; an inner wall of a crushing cylinder is fixedly provided with a crushing knife; a surface of a crushing roller is installed with a crushing knife, a rotating shaft is fixedly installed through the middle of the crushing roller, and an exhaust fan is fixedly installed at one end of the rotating shaft; the beneficial effect is: by fixing the crushing knife on the inner wall of the crushing cylinder, the crushing roller is rotatably installed in the inner cavity of the crushing cylinder, and the crushing knife is provided on the surface of the crushing roller, hot air is drawn in when the exhaust fan rotates, which on the one hand dries the injection molding waste materials, and on the other hand can drive the displacement of waste material particles with small particle size. The device integrates the three processes of drying, crushing and screening in the process of recycling injection molding waste materials, reduces the overall size of the equipment, and thus effectively reduces the waste material recycling cost.

Description

Technical Field

[0001] The invention relates to the technical field of injection molding waste material recycling, in particular to a device for recycling waste material of motor injection molding parts. Background Art

[0002] Motor injection molding waste is the excess material remaining in the mold runner, gate or part edge after plastic injection molding, such as burrs, material handles, etc., which is usually caused by improper control of injection pressure, temperature or mold gap. It needs to be removed manually or mechanically to ensure the dimensional accuracy and appearance quality of the part. Some waste can be recycled to reduce production costs.

[0003] In the prior art, Chinese invention publication number CN119217585A discloses a plastic injection molding waste recycling mechanism, which has the advantages of comprehensive cleaning, stable transportation, rapid crushing, reciprocating screening, double drying, reliable structure and simple operation.

[0004] However, currently, the drying, crushing, and screening processes for injection molding waste are independent, and the related equipment structures involved in each process are relatively large. As a result, the overall space occupied by the injection molding waste recycling equipment is too large, and the waste recycling cost is too high. To address this problem, the present invention proposes a motor injection molding parts waste recycling and utilization equipment to solve the above problems. Summary of the Invention

[0005] The purpose of the present invention is to provide a motor injection molding parts waste material recycling device to solve the problems of large size and high recycling cost of the injection molding waste material recycling device proposed in the above background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solution: a motor injection molding parts waste material recycling device, comprising:

[0007] A vacuum pump, wherein the inner cavity of the vacuum pump is installed with a screen plate 1 and a screen plate 2, and the surfaces of the two screen plates are respectively provided with screen holes of different sizes, and a discharge port is provided on the lower side of the middle part of the vacuum pump, and the discharge port is located between the screen plate 1 and the screen plate 2;

[0008] A crushing cylinder, the crushing cylinder is located at the open end of the vacuum cylinder, and a crushing knife is fixedly provided on the inner wall of the crushing cylinder;

[0009] A crushing roller, which is rotatably mounted in the inner cavity of the crushing cylinder and eccentric to the crushing cylinder, a crushing knife is mounted on the surface of the crushing roller, a rotating shaft is fixedly installed through the middle of the crushing roller, one end of the rotating shaft is movably mounted through the first and second screening plates and extends into the inner cavity of the vacuum cylinder, and an exhaust fan is fixedly mounted on one end of the rotating shaft;

[0010] The feeding cylinder and the air pumping cylinder are respectively located at the two ends of the crushing cylinder, and the crushing cylinder is rotatably installed between the feeding cylinder and the air pumping cylinder.

[0011] Preferably, the other end of the rotating shaft passes through the inner wall of the feed barrel through a bearing, the upper part of the feed barrel is fixedly connected to a feed pipe, the side of the feed barrel away from the crushing barrel is connected to a hot air pipe, and the side of the exhaust barrel away from the crushing barrel is connected to an exhaust pipe.

[0012] Preferably, the cutting edge of the pulverizing knife is provided with an oblique tooth groove, and a flipping plate is fixedly connected to the middle of the pulverizing knife. The flipping plate is along the length direction of the pulverizing cylinder and is fixedly connected to the inner wall of the pulverizing cylinder. The width direction of the flipping plate coincides with the radial direction of the pulverizing cylinder.

[0013] Preferably, the crushing blades are provided in multiple groups and are distributed in a ring array around the axis of the crushing cylinder. Each group of the crushing blades is provided with multiple crushing blades and are distributed at equal intervals along the axis direction of the crushing cylinder. The multiple groups of crushing blades are staggered with each other. The outer fixed sleeve of the crushing cylinder is provided with a gear ring, and the outer side of the gear ring is meshed with a driving gear driven by motor 1.

[0014] Preferably, a receiving groove is provided on the side wall of the crushing roller, and a knife seat is rotatably installed in the inner cavity of the receiving groove through a fixed shaft. The crushing knife is fixed to the surface of the knife seat, and the thickness of the crushing knife is smaller than the width of the knife seat. The cutting edge of the crushing knife is arc-shaped and is tilted around the axis of the crushing roller.

[0015] Preferably, a limiting slot is provided on the inner side wall of the receiving groove, the limiting slot is arc-shaped, and the center of the circle coincides with the fixed axis, a limiting pin is fixedly provided through one end of the knife seat, and the end of the limiting pin is movably inserted into the inner cavity of the limiting slot, and a thrust spring is provided in the inner cavity of the receiving groove, and the two ends of the thrust spring respectively press against the bottom of the receiving groove and the surface of the knife seat.

[0016] Preferably, a vibration ring concentric with the rotating shaft is fixedly provided in the middle of the second screening plate, a wavy rolling groove is provided on the surface of the vibration ring, a vibration disk is provided on one side of the vibration ring, and the vibration disk is fixedly sleeved on the outside of the rotating shaft, and a rolling body is movably embedded in the side of the vibration disk, and the rolling body is pressed on the bottom of the rolling groove.

[0017] Preferably, an annular groove is provided on the side of the vibration disk, and the annular groove covers the outer side of the vibration ring. An embedding groove is provided at the bottom of the annular groove for movably embedding the rolling body. A reset spring is provided in the inner cavity of the embedding groove, and the reset spring presses against the rolling body. A weight-reducing groove is provided on the surface of the vibration disk.

[0018] Preferably, the upper end of the feed pipe is connected to a silo, and a valve assembly is provided in the middle of the feed pipe. The valve assembly includes a valve seat fixedly connected to the feed pipe, and a through hole is opened through the middle of the valve seat. Valve plates that close the through hole are movably connected on both sides of the valve seat, and the valve plates are driven to slide by a cylinder.

[0019] Preferably, a second motor is provided at one end of the rotating shaft, the second motor is fixed to the outer wall of the vacuum cylinder and drives the rotating shaft to rotate, and a protective sleeve located in the inner cavity of the feed cylinder is provided on the outer side of the other end of the rotating shaft.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] The present invention has a crushing knife fixed on the inner wall of the crushing cylinder, a crushing roller is rotatably installed in the inner cavity of the crushing cylinder and is eccentric with it, a crushing knife is provided on the surface of the crushing roller, and a screening plate is provided in the inner cavity of the exhaust cylinder, one end of the rotating shaft passes through the screening plate, and an exhaust fan is installed at the end. The crushing cylinder rotates at a low speed to turn over the injection molding residue, and the crushing roller and the rotating shaft rotate at a high speed, and the crushing knife can crush the injection molding residue in mid-air. When the exhaust fan rotates, hot air is drawn in to flow, which on the one hand dries the injection molding residue, and on the other hand can drive the small-sized residue particles to move, ensuring that the residue particles that meet the crushing particle size standard can be discharged from the discharge port in time, while the large-sized residue that has not been completely crushed continues to remain in the inner cavity of the crushing cylinder to be crushed. This device integrates the three processes of drying, crushing and screening in the process of recycling injection molding residue, reduces the overall size of the equipment, and thus effectively reduces the residue recycling cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a three-dimensional schematic diagram of the overall structure of the present invention;

[0023] Figure 2 It is a schematic cross-sectional view of the overall structure of the present invention;

[0024] Figure 3 It is a side cross-sectional schematic diagram of the crushing cylinder structure of the present invention;

[0025] Figure 4 This is a partially cutaway schematic diagram of the pulverizing tube structure of the present invention;

[0026] Figure 5 This is a schematic diagram of the structure of the crushing roller and the rotating shaft of the present invention;

[0027] Figure 6 It is a side cross-sectional schematic diagram of the crushing roller structure of the present invention;

[0028] Figure 7 This is a three-dimensional schematic diagram of the crushing knife structure of the present invention;

[0029] Figure 8This is a schematic diagram of the separation structure of the screening plate 2 and the vibration plate of the present invention;

[0030] Figure 9 This is a partially cutaway schematic diagram of the vibration disk structure of the present invention;

[0031] Figure 10 It is a three-dimensional schematic diagram of the valve assembly structure of the present invention.

[0032] Figure: 1. Vacuum pump; 11. Feeding port; 12. Screening plate 1; 13. Screening plate 2; 131. Vibrating ring; 132. Rolling groove; 14. Exhaust pipe; 2. Crushing cylinder; 21. Crushing blade; 22. Beveled tooth groove; 23. Turning plate; 24. Gear ring; 25. Drive gear; 26. Motor 1; 3. Crushing roller; 31. Crushing blade; 32. Blade holder; 33. Storage groove; 34. Limiting slide; 35. Fixed shaft; 36 , limit pin; 37, thrust spring; 4, rotating shaft; 41, exhaust fan; 42, vibration plate; 421, annular groove; 422, inlay groove; 423, rolling element; 424, return spring; 425, weight reduction groove; 43, protective cover; 44, motor 2; 5, feed barrel; 51, feed pipe; 52, hot air pipe; 6, silo; 7, valve assembly; 71, valve seat; 72, through hole; 73, valve plate; 74, cylinder. DETAILED DESCRIPTION

[0033] In order to clearly and completely describe the objectives and technical solutions of the present invention and make the advantages more clearly understood, the embodiments of the present invention are further described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are part of the embodiments of the present invention, not all of them, and are only used to explain the embodiments of the present invention, not to limit the embodiments of the present invention. All other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0034] See also Figures 1 to 10 , the present invention provides a technical solution:

[0035] Embodiment 1, a motor injection molding parts residual material recycling device, includes: a vacuum cylinder 1, a crushing cylinder 2, a crushing roller 3 and a feeding cylinder 5.

[0036] Specifically, a screen plate 12 and a screen plate 2 13 are installed in the inner cavity of the vacuum cylinder 1, and screen holes of different sizes are opened on the surfaces of the two plates, such as Figure 2As shown, the screening plate 12 is located on the left side of the screening plate 2 13, and the aperture of the screening holes opened on the surface of the screening plate 12 is larger than the aperture of the screening holes opened on the surface of the screening plate 2 13. The screening plate 12 is used to block the large-sized injection molding residue that has not been completely crushed, and only allows the small-sized residue particles that have been completely crushed to pass through. The screening plate 2 13 is used to block all the injection molding residue and residue particles, and only allows air to flow through. That is to say, when the injection molding residue is crushed, the residue that has not been completely crushed remains on the left side of the screening plate 12, and the completely crushed residue particles are located between the screening plate 12 and the screening plate 2 13; in addition, a discharge port 11 is provided on the lower side of the middle part of the vacuum cylinder 1, and the discharge port 11 is located between the screening plate 12 and the screening plate 2 13, and the residue particles can be automatically discharged from the discharge port 11 under the action of their own gravity;

[0037] Secondly, the crushing cylinder 2 is located at the open end of the vacuum cylinder 1. A crushing knife 21 is fixedly provided on the inner wall of the crushing cylinder 2. The crushing cylinder 2 itself rotates at a low speed. When the crushing cylinder 2 rotates, the crushing knife 21 can perform preliminary crushing on the injection molding residue and turn over the injection molding residue to prevent the injection molding residue from accumulating at the bottom of the crushing cylinder 2 and affecting the crushing efficiency.

[0038] Furthermore, the crushing roller 3 is rotatably mounted in the inner cavity of the crushing cylinder 2 and eccentric to the crushing cylinder 2. A crushing knife 31 is mounted on the surface of the crushing roller 3. Figure 3 As shown, the crushing cylinder 2 and the crushing roller 3 both keep rotating clockwise, the crushing cylinder 2 is at a low speed, and the crushing roller 3 is at a high speed. When the crushing cylinder 2 rotates, the injection molding residue is turned over, so that most of the injection molding residue can fall on the surface of the crushing roller 3. At this time, the crushing knife 31 rotates to crush the injection molding residue in the air, and a rotating shaft 4 is fixedly installed in the middle of the crushing roller 3 to be used for positioning the crushing roller 3. One end of the rotating shaft 4 is movable through the screen plate 1 12 and the screen plate 2 13 in turn and extends into the inner cavity of the vacuum cylinder 1. An exhaust fan 41 is fixedly installed on one end of the rotating shaft 4. The crushing roller 3, the rotating shaft 4 and the exhaust fan 41 keep rotating synchronously. The exhaust fan 41 can drive air flow when it rotates at a high speed, as shown in FIG. Figure 2As shown, the air in the inner cavity of the crushing barrel 2 flows from left to right. Since the injection molding residue is crushed into residue particles by the crushing knife 31 in mid-air, the residue particles themselves are small in size and low in weight. Therefore, the air flow in the inner cavity of the crushing barrel 2 can drive the residue particles to move to the right until the residue particles pass through the screening plate 1 12 and are blocked by the screening plate 2 13. The residue particles are finally discharged downward from the discharge port 11. It should be noted that the residue particles themselves still have weight. The residue particles in the inner cavity of the crushing barrel 2 and in mid-air will gradually fall to the bottom of the crushing barrel 2. Therefore, the crushing barrel 2 needs to turn over the residue particles when it rotates, so that the residue particles are located in mid-air again, so that they can continue to move with the air flow; in addition, large-sized and heavy injection molding residues remain in the inner cavity of the crushing barrel 2, and the above process is repeated to be continuously crushed until they become residue particles.

[0039] In addition, the feeding barrel 5 and the vacuum barrel 1 are respectively located at the two ends of the crushing barrel 2, and the crushing barrel 2 is rotatably installed between the feeding barrel 5 and the vacuum barrel 1. Hot air is introduced into the inner cavity of the feeding barrel 5. When the vacuum fan 41 rotates, it drives the air flow and forms a negative pressure in the inner cavity of the crushing barrel 2. Therefore, the hot air in the inner cavity of the feeding barrel 5 can automatically flow to the right, thereby realizing the drying treatment of the injection molding residue and the residue particles.

[0040] In order to ensure the normal flow of gas inside the device, the present application also has an inner wall of the feed barrel 5 that is movable through the bearing at the other end of the rotating shaft 4. The upper part of the feed barrel 5 is fixedly connected with a feed pipe 51. The injection molding residue enters the inner cavity of the feed barrel 5 from the feed pipe 51, and then enters the inner cavity of the crushing barrel 2 for crushing. A hot air pipe 52 is connected on the side of the feed barrel 5 away from the crushing barrel 2. The hot air pipe 52 is connected to an external hot air blower and is used to introduce hot air into the inner cavity of the feed barrel 5 and the crushing barrel 2 to achieve drying of the residue. An exhaust pipe 14 is connected on the side of the vacuum barrel 1 away from the crushing barrel 2 to provide normal flow of gas in the inner cavity of the vacuum barrel 1.

[0041] In order to improve the crushing effect of the residual material, the present application also has an oblique tooth groove 22 at the edge of the crushing knife 21. The setting of the oblique tooth groove 22 is used to improve the crushing effect of the injection molding residual material, and the crushing knife 31 will also throw out part of the residual material when rotating at high speed. These thrown residual materials can also be crushed well after colliding with the oblique tooth groove 22. A turning plate 23 is fixedly connected to the middle of the crushing knife 21. The turning plate 23 is along the length direction of the crushing cylinder 2 and is fixedly connected to the inner wall of the crushing cylinder 2. The width direction of the turning plate 23 coincides with the radial direction of the crushing cylinder 2. Figure 4 As shown, the setting of the turning plate 23 can, on the one hand, improve the strength of the crushing knife 21 itself, and on the other hand, can turn over the injection molding residue and residual particles as the crushing cylinder 2 rotates, further avoiding the accumulation of residual particles at the bottom of the inner cavity of the crushing cylinder 2.

[0042] In order to drive the pulverizing drum 2 to rotate, the pulverizing blades 21 of the present application are provided with multiple groups and are distributed in a circular array around the axis of the pulverizing drum 2. Each group of pulverizing blades 21 is provided with multiple pulverizing blades and are distributed at equal intervals along the axis direction of the pulverizing drum 2. The provision of multiple groups and multiple pulverizing blades 21 can effectively improve the pulverizing effect of the injection molding residue in the inner cavity of the pulverizing drum 2, and the multiple groups of pulverizing blades 21 are staggered with each other to ensure that the injection molding residue can be pulverized at all positions on the inner wall of the pulverizing drum 2. In addition, a gear ring 24 is fixedly sleeved on the outer side of the pulverizing drum 2, and a driving gear 25 driven by a motor 26 is meshed on the outer side of the gear ring 24. When the motor 26 is working, it drives the driving gear 25 to rotate, and then drives the pulverizing drum 2 to rotate through the meshing transmission between the driving gear 25 and the gear ring 24. The cooperation of the driving gear 25 and the gear ring 24 can be used to decelerate the rotation of the pulverizing drum 2, ensuring that the rotation of the pulverizing drum 2 maintains low speed and high torque.

[0043] In order to improve the crushing effect of the injection molding residue, the present application also has a receiving groove 33 opened on the side wall of the crushing roller 3, and the inner cavity of the receiving groove 33 is rotatably installed with a knife seat 32 through a fixed shaft 35. Figure 6 As shown, the knife seat 32 can rotate around the fixed axis 35 at a certain angle, and the knife seat 32 can be received into the inner cavity of the receiving groove 33 or rotated out from the inner cavity of the receiving groove 33 when rotating. The crushing knife 31 is fixed to the surface of the knife seat 32, and the thickness of the crushing knife 31 is smaller than the width of the knife seat 32. Figure 7 As shown, the cutting edge on the crushing knife 31 mainly plays a role in crushing the residual material, and the crushed residual material can quickly contact the knife seat 32, and can be thrown out by the knife seat 32 when contacting the knife seat 32. Compared with the crushing knife 31, the knife seat 32 has a larger contact area with the residual material, and it is easier to throw the residual material out. After being thrown out, the residual material collides with the crushing knife 21 and is crushed again. In addition, the cutting edge of the crushing knife 31 is arc-shaped and is tilted around the axis of the crushing roller 3. When the crushing knife 31 contacts the injection molding residual material, due to its own high-speed rotation, its cutting edge can form a sawing effect on the residual material. Therefore, it can be suitable for injection molding residual material with higher strength and has a good crushing effect.

[0044] In order to ensure that the knife holder 32 can quickly throw out the excess material, the present application also has a limiting slot 34 on the inner side wall of the receiving groove 33. The limiting slot 34 is arc-shaped, and the center of the circle coincides with the fixed axis 35. One end of the knife holder 32 is fixedly penetrated by a limiting pin 36, and the end of the limiting pin 36 is movably inserted into the inner cavity of the limiting slot 34. Figure 6The cam 34 is pressed against the top of the chute 33 to prevent the chute 33 from sliding outwards and causing the chute 33 to be exposed.

[0045] In order to prevent the screening holes on the surface of the screening plate 2 13 from being blocked, the present application also has a vibration ring 131 fixedly provided in the middle of the screening plate 2 13, which is concentric with the rotating shaft 4. A wave-shaped rolling groove 132 is provided on the surface of the vibration ring 131. A vibration disk 42 is provided on one side of the vibration ring 131, and the vibration disk 42 is fixedly sleeved on the outside of the rotating shaft 4. A rolling body 423 is movably embedded on the side of the vibration disk 42, and the rolling body 423 is pressed on the bottom of the rolling groove 132. Figure 8 and Figure 9 As shown, when the rotating shaft 4 rotates, it drives the vibration disk 42 to rotate accordingly. At this time, the rolling body 423 rolls on the bottom of the rolling groove 132. Since the rolling groove 132 is wavy, the rolling body 423 will produce collision vibration on the vibration ring 131, and then drive the screening plate 2 13 to vibrate, thereby preventing some small-sized residual particles from getting stuck in the screening holes on the surface of the screening plate 2 13 and causing blockage.

[0046] In order to install the rolling body 423, the present application also has an annular groove 421 on the side of the vibration disk 42, and the annular groove 421 covers the outer side of the vibration ring 131. After the annular groove 421 covers the vibration ring 131, it can prevent dust, impurities, etc. from falling onto the rolling groove 132, thereby ensuring that the rolling body 423 can roll smoothly at the bottom of the rolling groove 132 and reducing the friction resistance between the two. In addition, an inlay groove 422 for the rolling body 423 to be movably inlaid is provided at the bottom of the annular groove 421, and a return spring 424 is provided in the inner cavity of the inlay groove 422, and the return spring 424 presses against the rolling body 423. Figure 9 As shown, the return spring 424 always provides thrust so that the rolling body 423 can always be pressed on the bottom of the rolling groove 132. In addition, the return spring 424 can also cushion the impact on the rolling body 423 and reduce the vibration of the vibration plate 42 itself. A weight-reducing groove 425 is provided on the surface of the vibration plate 42 to reduce the overall weight of the vibration plate 42.

[0047] In order to control the feeding amount of the injection molding residue, the present application also has a hopper 6 connected to the upper end of the feed pipe 51. According to actual needs, if the surface of the injection molding residue is more oily, the injection molding residue can be put into the inner cavity of the hopper 6 after cleaning, and then sent to the feeding cylinder 5 and the inner cavity of the crushing cylinder 2 for crushing, drying and screening; if the surface of the injection molding residue is more dusty and impurities, but there is no oily dirt, it is not necessary to clean it. During the crushing, drying and screening of the injection molding residue in the inner cavity of the crushing cylinder 2, the dust and impurities on its surface can be automatically screened under the action of airflow, and finally discharged from the exhaust pipe 14; in addition, a valve assembly 7 is provided in the middle of the feed pipe 51, and the valve assembly 7 includes a valve seat 71 fixedly connected to the feed pipe 51, and a through hole 72 is opened in the middle of the valve seat 71, and valve plates 73 that close the through hole 72 are movably connected on both sides of the valve seat 71, and the valve plates 73 are driven to slide by the cylinder 74, such as Figure 10 As shown, the cylinder 74 can control the sliding of the valve plate 73, and then control the opening and closing of the through hole 72, so as to control the communication between the silo 6 and the feeding barrel 5, and then control the feeding amount of the injection molding residue and avoid the leakage of hot air.

[0048] In order to drive the rotating shaft 4 to rotate, the present application also has a second motor 44 provided at one end of the rotating shaft 4. The second motor 44 is fixed to the outer wall of the vacuum cylinder 1 and drives the rotating shaft 4 to rotate. The other end of the rotating shaft 4 is provided with a protective sleeve 43 located in the inner cavity of the feed cylinder 5. When the second motor 44 is working, it directly drives the rotating shaft 4 to rotate at high speed. The setting of the protective sleeve 43 can be used to reduce the impact force generated on the other end of the rotating shaft 4 when the injection molding residue falls, thereby avoiding the possibility of bending and deformation of the rotating shaft 4 after long-term use.

[0049] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A motor injection molding parts waste material recycling device, characterized by: include: A vacuum cylinder (1), wherein the inner cavity of the vacuum cylinder (1) is provided with a first screening plate (12) and a second screening plate (13), and the surfaces of the two screening plates are respectively provided with screening holes of different sizes, and a discharge port (11) is provided on the lower side of the middle portion of the vacuum cylinder (1), and the discharge port (11) is located between the first screening plate (12) and the second screening plate (13); A pulverizing cylinder (2), the pulverizing cylinder (2) being located at the open end of the vacuum cylinder (1), and a pulverizing knife (21) being fixedly provided on the inner wall of the pulverizing cylinder (2); A crushing roller (3), the crushing roller (3) is rotatably mounted in the inner cavity of the crushing cylinder (2) and is eccentric to the crushing cylinder (2), a crushing knife (31) is mounted on the surface of the crushing roller (3), a rotating shaft (4) is fixedly mounted through the middle of the crushing roller (3), one end of the rotating shaft (4) is movably mounted through the first screening plate (12) and the second screening plate (13) in sequence and extends into the inner cavity of the exhaust cylinder (1), and an exhaust fan (41) is fixedly mounted on one end of the rotating shaft (4); A feeding cylinder (5), wherein the feeding cylinder (5) and the air pump (1) are respectively located at two ends of the crushing cylinder (2), and the crushing cylinder (2) is rotatably installed between the feeding cylinder (5) and the air pump (1); The cutting edge of the crushing knife (21) is provided with an oblique tooth groove (22), and a turning plate (23) is fixedly connected to the middle of the crushing knife (21), the turning plate (23) is along the length direction of the crushing cylinder (2) and is fixedly connected to the inner wall of the crushing cylinder (2), and the width direction of the turning plate (23) coincides with the radial direction of the crushing cylinder (2); The crushing knives (21) are provided in multiple groups and are distributed in a ring array around the axis of the crushing cylinder (2). Each group of the crushing knives (21) is provided with multiple crushing knives and are distributed at equal intervals along the axis direction of the crushing cylinder (2). The multiple groups of crushing knives (21) are staggered with each other. The outer fixed sleeve of the crushing cylinder (2) is provided with a gear ring (24). The outer side of the gear ring (24) is meshed with a driving gear (25) driven by a motor (26). The side wall of the crushing roller (3) is provided with a receiving groove (33), and a knife seat (32) is rotatably mounted in the inner cavity of the receiving groove (33) via a fixed shaft (35). The crushing knife (31) is fixed to the surface of the knife seat (32), and the thickness of the crushing knife (31) is smaller than the width of the knife seat (32). The cutting edge of the crushing knife (31) is arc-shaped and is arranged obliquely around the axis of the crushing roller (3); The inner side wall of the receiving groove (33) is provided with a limiting slide groove (34), the limiting slide groove (34) is arc-shaped, and the center of the circle coincides with the fixed axis (35), one end of the knife seat (32) is fixedly penetrated by a limiting pin shaft (36), and the end of the limiting pin shaft (36) is movably inserted into the inner cavity of the limiting slide groove (34), the inner cavity of the receiving groove (33) is provided with a thrust spring (37), and the two ends of the thrust spring (37) respectively press against the bottom of the receiving groove (33) and the surface of the knife seat (32).

2. The motor injection molding parts waste material recycling equipment according to claim 1, characterized in that: The other end of the rotating shaft (4) is movable through the inner wall of the feed barrel (5) via a bearing. The upper part of the feed barrel (5) is fixedly connected to a feed pipe (51). The side of the feed barrel (5) away from the crushing barrel (2) is connected to a hot air pipe (52). The side of the exhaust barrel (1) away from the crushing barrel (2) is connected to an exhaust pipe (14).

3. The motor injection molding parts waste material recycling equipment according to claim 1, characterized in that: A vibration ring (131) is fixedly provided in the middle of the second screening plate (13) and is concentric with the rotating shaft (4). A wave-shaped rolling groove (132) is provided on the surface of the vibration ring (131). A vibration disk (42) is provided on one side of the vibration ring (131), and the vibration disk (42) is fixedly sleeved on the outside of the rotating shaft (4). A rolling body (423) is movably embedded on the side of the vibration disk (42), and the rolling body (423) is pressed on the bottom of the rolling groove (132).

4. The motor injection molding parts waste material recycling equipment according to claim 3, characterized in that: An annular groove (421) is provided on the side of the vibration disk (42), and the annular groove (421) covers the outer side of the vibration ring (131). An inlay groove (422) for movably inlaying a rolling body (423) is provided at the bottom of the annular groove (421). A return spring (424) is provided in the inner cavity of the inlay groove (422), and the return spring (424) abuts against the rolling body (423). A weight-reducing groove (425) is provided on the surface of the vibration disk (42).

5. The motor injection molding parts waste material recycling equipment according to claim 2, characterized in that: The upper end of the feed pipe (51) is connected to the silo (6), and a valve assembly (7) is provided in the middle of the feed pipe (51). The valve assembly (7) includes a valve seat (71) fixedly connected to the feed pipe (51), and a through hole (72) is provided in the middle of the valve seat (71). Valve plates (73) that close the through hole (72) are movably connected to both sides of the valve seat (71), and the valve plates (73) are driven to slide by a cylinder (74).

6. The motor injection molding parts waste material recycling equipment according to claim 1, characterized in that: One end of the rotating shaft (4) is provided with a second motor (44), which is fixed to the outer wall of the vacuum cylinder (1) and drives the rotating shaft (4) to rotate. The other end of the rotating shaft (4) is provided with a protective sleeve (43) located in the inner cavity of the feeding cylinder (5).

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