Injection molding defective product processing device

Abstract

The application relates to the technical field of plastic recycling, and discloses an injection molding defective product processing device which comprises a crushing bin, a multistage sorting bin, a rotary cover body arranged at the top end of the crushing bin, one end of the rotary cover body being provided with a feeding bin, the other end of the rotary cover body being provided with an overflow groove, and one side of the rotary cover body being communicated with a liquid distribution pipe which extends to one side of the overflow groove; when the rotary cover body rotates to a first position, the feeding bin faces away from the crushing bin, and the liquid distribution pipe is located at the top end of the overflow groove; when the rotary cover body rotates to a second position, the feeding bin faces the crushing bin for feeding, and the overflow groove is arranged to face the crushing bin. In the injection molding defective product processing device, the liquid in the overflow groove is guided to the crushing area during rotation, so that the material entering the crushing area is subjected to the action of the liquid in the initial stage, the stability of the crushing process is improved, and the problem that the physical performance of the plastic is reduced due to the influence of temperature in the recycling and crushing process in the prior art can be solved.

Description

Technical Field

[0001] This invention relates to the field of plastic recycling technology, and more specifically to a device for processing defective injection molded products. Background Technology

[0002] In the plastic injection molding process, it is inevitable to generate gate and runner waste, as well as defective products that do not meet the size requirements or have defects. In order to reduce production costs, it is usually necessary to recycle these plastic defective products. In the existing technology, integrated equipment that "crushes first and then presses into blocks" is often used to reduce the volume of plastic fragments and facilitate subsequent storage and transportation.

[0003] In related technologies, for example, the prior art patent with publication number CN222406697U provides a crushing and briquetting device for processing defective plastic products. This device performs initial crushing by setting a crushing roller in the working box, and performs secondary auxiliary crushing by using spiral blades and spiral rods. A briquetting cylinder and a fixed plate are set at the bottom. The fixed plate extends out of the fixed plate through the fixed cylinder to serve as a supporting surface, which solves the problem that plastic is easily pushed out of the device and cannot be compacted during the briquetting process.

[0004] However, in practical applications, the crushing mechanism (double crushing rollers and spiral blades) performs high-intensity shearing and tearing on plastics in a closed chamber, which generates a large amount of frictional heat. Since the chamber and crushing chamber lack any heat dissipation or temperature control hardware structure, heat accumulates in the chamber, which can easily cause plastics (especially thermoplastics such as PP and ABS) to reach the glass transition temperature or even melt, resulting in the crushed plastic fragments turning yellow, carbonizing and degrading, and seriously reducing the physical properties of the recycled material. Summary of the Invention

[0005] In view of the above-mentioned shortcomings of the prior art, the present invention provides a device for processing defective injection molded products, which can effectively solve the problem that the physical properties of plastics may be reduced due to temperature during the recycling and crushing process in the prior art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: This invention provides an apparatus for processing defective injection molded products, comprising: A crushing chamber, wherein crushing rollers are installed inside the crushing chamber; A multi-stage sorting bin is connected to the bottom end of the crushing bin. The multi-stage sorting bin is filled with sorting medium. A discharge port is opened at the bottom end of the multi-stage sorting bin for discharging the first material separated from the bin. A return pipe is opened on one side of the multi-stage sorting bin. A conveyor is installed in the return pipe. The conveyor can transport the second material separated from the bin to the outside of the multi-stage sorting bin. A rotary hood is rotatably mounted on the top of the crushing chamber. One end of the rotary hood is provided with a feeding hopper, and the other end of the rotary hood is provided with an overflow trough. A liquid distribution pipe is connected to one side of the rotary hood and extends to one side of the overflow trough. The rotating hood is rotatable between a first position and a second position. When the rotating hood is rotated to the first position, the feeding bin faces away from the crushing bin, and the liquid distribution pipe is located at the top of the overflow trough. When the rotating hood is rotated to the second position, the feeding bin feeds material towards the crushing bin, and the overflow trough is positioned towards the crushing bin.

[0007] In some examples, multiple overflow channels are provided, which are evenly distributed on the top of the crushing roller. The multiple overflow channels are connected on one side, and the liquid distribution pipe extends to the connection point of the overflow channels.

[0008] In some examples, when the rotary hood is rotated to the first position, the top of the feeding bin has a first width, the bottom of the feeding bin has a second width, and the first width is greater than the second width; Dust-guiding slits are provided on both sides of the feeding hopper. When the rotating hood is rotated to the first position, the vertical projection of the dust-guiding slits is located on one side of the overflow trough.

[0009] In some examples, a rotary seat is provided at the top of the crushing chamber, and the rotary cover is rotatably disposed at the rotary seat; The inner side of the rotary seat is provided with a limiting cavity corresponding to the rotary cover. When the rotary cover rotates to the first position and the second position, its two sides respectively rotate into the corresponding limiting cavity.

[0010] In some examples, the rotating cover is provided with support plates at both ends along the axial direction, and the support plates are rotatably disposed inside the rotating seat; The liquid distribution pipe is rotatably disposed through the support plate.

[0011] In some examples, magnetic separation rollers are rotatably arranged inside the multi-stage sorting bins.

[0012] In some examples, the magnetic separator roller is disposed within the sorting medium.

[0013] In some examples, the outer periphery of the magnetic separator is provided with magnetic adsorption zones and non-magnetic release zones that are alternately distributed circumferentially; A directional flow channel is provided on one side of the multi-stage sorting bin corresponding to the magnetic separation roller body, and the directional flow channel is connected to the multi-stage sorting bin. A stripping plate is provided on one side of the directional guide channel. The stripping plate abuts against the periphery of the magnetic separation roller and is used to remove the material from the magnetic adsorption area when the material rotates to a predetermined position with the magnetic separation roller.

[0014] In some examples, an air-turbulence shaft is rotatably mounted inside the multi-stage sorting chamber within the sorting medium, and multiple turbulence nozzles are arranged on the outer side of the air-turbulence shaft; The air turbulence shaft is disposed on one side of the magnetic separation roller. When the air turbulence shaft rotates, the turbulence nozzle has a spray direction toward the magnetic separation roller.

[0015] The technical solution provided by this invention has the following advantages compared with the prior art: This application achieves separation and coordination of the feeding and dispensing processes by setting up a rotating hood that can rotate between different positions, allowing the feeding bin and overflow trough to correspond to the feeding state and liquid distribution state respectively at different work positions. At the same time, the overflow trough guides the liquid inside to the crushing zone during rotation, so that the material entering the crushing zone is subjected to liquid action in the initial stage, improving the stability of the crushing process. Combined with the diversion structure of the multi-stage sorting bin, continuous processing and graded output of materials are realized, thereby improving the overall processing efficiency and structural integration. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a three-dimensional structural diagram of another side of an embodiment of the present invention; Figure 2 This is a three-dimensional structural schematic diagram of an embodiment of the present invention; Figure 3 This is an exploded structural diagram of the crushing chamber and the rotating cover in an embodiment of the present invention; Figure 4 This is a schematic diagram of the liner plate in an embodiment of the present invention; Figure 5 This is a schematic diagram of the baffle structure in an embodiment of the present invention; Figure 6 This is a schematic diagram of the structure of the helix in an embodiment of the present invention; Figure 7 This is a schematic cross-sectional view of the rotating cover in an embodiment of the present invention; Figure 8 This is a schematic cross-sectional view of the multi-stage sorting bins in an embodiment of the present invention; Figure 9 This is a schematic diagram of the fluid reuse mechanism in an embodiment of the present invention; Figure 10 This is a schematic diagram of the assembly of the crushing roller, the air disturbance shaft, and the magnetic separation roller in an embodiment of the present invention; Figure 11 This is a schematic diagram of the assembly of the conveyor and the dual-shaft reducer in an embodiment of the present invention; Figure 12 This is a schematic cross-sectional view of the stripping plate in an embodiment of the present invention.

[0018] The labels in the diagram represent: 1. Crushing chamber; 11. Rotary seat; 12. Crushing roller; 121. Spur gear; 122. First bevel pulley; 123. First toothed belt; 13. Liner; 14. Shielding shell; 2. Rotary hood; 21. Feeding bin; 211. Dust guide slit; 22. Liquid distribution pipe; 23. Overflow trough; 24. Support plate; 25. Drive motor; 3. Multi-stage sorting bin; 31. Discharge port; 311. Baffle; 312. Sealing gasket; 313. Linear push rod; 32. Directional guide channel; 33. Guide inclined surface; 34. First liquid outlet; 341. First filtration mechanism; 342. First connecting pipe; 35. Second liquid outlet; 351. Second filtration mechanism; 36. Return pipe; 37. Discharge plate; 4. Air disturbance shaft; 41. Turbine nozzle; 42. Air inlet pipe; 43. Second umbrella-shaped pulley; 5. Conveyor; 51. Spiral; 52. Filter tube; 53. First connecting rod; 54. Connecting plate; 55. Second connecting rod; 56. First bevel gear; 6. Magnetic separator roller body; 61. Magnetic adsorption zone; 62. Non-magnetic release zone; 63. Third umbrella-shaped pulley; 631. Second toothed belt; 7. Liquid storage tank; 71. Liquid inlet channel; 72. Control valve; 73. First liquid outlet channel; 74. Liquid level sensor; 75. Slag discharge port; 8. Fluid recycling mechanism; 81. Fluid transfer pump; 82. Second connecting pipe; 83. Heat exchange jacket; 831. Inlet pipe; 832. Outlet pipe; 84. Second outlet channel; 85. Reversing valve; 851. Third connecting pipe; 9. Dual-shaft reducer; 91. Second bevel gear; 10. Receiving tray; 101. First receiving area; 102. Second receiving area; 103. Third receiving area. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0020] The present invention will be further described below with reference to embodiments.

[0021] This embodiment discloses a device for processing defective injection molded products, which mainly performs crushing and multi-stage sorting operations on defective injection molded products, such as... Figure 1 , Figure 2 and Figure 3 As shown, the above device includes a crushing chamber 1, a multi-stage sorting chamber 3, a rotary cover 2, and a crushing roller 12 disposed in the crushing chamber 1.

[0022] The crushing chamber 1 is a cavity structure with an open top and connected to the multi-stage sorting chamber 3 at the bottom. The inner wall of the crushing chamber 1 can be made of wear-resistant material to reduce the wear of the material on the chamber during the crushing process and extend the service life of the device. Two crushing rollers 12 are provided, which are arranged opposite each other inside the crushing chamber 1 and are driven to rotate relative to each other, for extruding and shearing crushing of the input injection-molded defective products. In a specific example of this application, such as Figure 4 As shown, each of the two crushing rollers 12 is provided with a liner 13 on the side away from each other. Both liners 13 are fixedly installed inside the crushing chamber 1. One end of each crushing roller 12 is rotatably installed through the crushing chamber 1. The part that extends through the crushing chamber 1 is fixedly connected to a spur gear 121. The two spur gears 121 are meshed with each other. One of the crushing rollers 12 is driven to rotate by one output end of a dual-shaft reducer 9. The dual-shaft reducer 9 is fixedly installed outside the crushing chamber 1.

[0023] The bottom of the crushing chamber 1 is fixedly connected to the multi-stage sorting chamber 3 to ensure that the crushed material can fall smoothly and without residue into the multi-stage sorting chamber 3, avoiding material accumulation at the connection port and causing blockage. The multi-stage sorting chamber 3 is a closed cavity structure, filled with a sorting medium of preset concentration. The sorting medium can be selected according to the material and density of the injection-molded defective product, such as water, brine or other special sorting liquid. By the density difference of the sorting medium, the graded sorting of materials of different specifications and densities after crushing is achieved, that is, the first material and the second material are sorted out.

[0024] The multi-stage sorting bin 3 has a discharge port 31 at its bottom. After being sorted by the multi-stage sorting bin 3, the first type of material that meets the preset requirements will sink to the bottom of the multi-stage sorting bin 3 under its own gravity and the action of the sorting medium, and be discharged outward through the bottom discharge port 31, thus completing the centralized collection and subsequent recycling of the first type of material; specifically, as follows Figure 5 As shown, a baffle 311 is slidably disposed on the outer side of the discharge port 31. A sealing gasket 312 is fixedly disposed on the side of the baffle 311 near the inner side of the multi-stage sorting chamber 3. The baffle 311 is fixedly disposed on the output end of the linear push rod 313. The linear push rod 313 is fixedly disposed on the outer side of the multi-stage sorting chamber 3. A guide inclined surface 33 is disposed at the bottom of the inner side of the multi-stage sorting chamber 3, and the discharge port 31 is disposed at the bottom of the guide inclined surface 33. During sorting, the baffle 311 is attached to the discharge port 31 to maintain the liquid level of the sorting medium in the multi-stage sorting chamber 3 and ensure effective sorting. When it is necessary to discharge the first material, the baffle 311 is moved away from the multi-stage sorting chamber 3 by the linear push rod 313, and the first material flows out of the multi-stage sorting chamber 3 under the influence of the sorting medium.

[0025] A return pipe 36 is fixedly connected to one side of the multi-stage sorting chamber 3. One end of the return pipe 36 is connected to the cavity of the multi-stage sorting chamber 3, and the other end extends to the outside of the multi-stage sorting chamber 3. A conveyor 5 is installed inside the return pipe 36. The conveyor 5 can be a conventional conveying structure such as a screw conveyor, belt conveyor, or lifting pump. Its function is to transport the second material separated in the multi-stage sorting chamber 3 to the outside of the multi-stage sorting chamber 3, so as to realize the independent separation and discharge of the first material and the second material, avoid the mixing of the two types of materials, improve the sorting accuracy, and facilitate the classification and recycling of different types of materials. In a specific example of this application, such as Figure 6 As shown, the conveyor 5 includes a spiral body 51, which is rotatably disposed on the outside of the filter tube 52. The filter tube 52 is disposed corresponding to the return pipe 36, which is used to guide the sorting medium filtered down by the filter tube 52 back to the inside of the multi-stage sorting chamber 3.

[0026] Again Figure 3As shown, a rotating hood 2 is rotatably mounted on the top of the crushing chamber 1. The rotating hood 2 can reciprocate between a first position and a second position around its own rotation axis. One end of the rotating hood 2 is integrally formed with a feeding bin 21, which is a bucket-shaped structure with an open top. Its inner wall is provided with a guide inclined surface 33 to facilitate the receiving, temporary storage, and subsequent feeding of injection-molded defective products. The opening size of the feeding bin 21 can be flexibly designed according to the actual feeding volume to ensure stable reception of externally conveyed injection-molded defective products. To prevent material spillage, an overflow trough 23 is fixedly installed at the other end of the rotating hood 2. The overflow trough 23 is a long strip-shaped trough structure, and the orientation of its opening can be adjusted synchronously with the rotation of the rotating hood 2. When the rotating hood 2 rotates to the first position, the feeding bin 21 is positioned away from the crushing bin 1, and the overflow trough 23 is located at the bottom of the feeding bin 21. When the rotating hood 2 rotates to the second position, the feeding bin 21 is positioned towards the crushing bin 1, and the overflow trough 23 is located at the top of the feeding bin 21.

[0027] like Figure 7 As shown, a liquid distribution pipe 22 is fixedly connected to one side of the rotary hood 2. One end of the liquid distribution pipe 22 is connected to the external liquid supply system, and the other end extends to one side of the overflow tank 23. A diversion structure can be set at the end of the liquid distribution pipe 22 to ensure that the fluid medium delivered to the overflow tank 23 is uniform and stable. The fluid medium is the same as the sorting medium to ensure the effectiveness of the sorting medium in sorting materials.

[0028] In the above technical solution, when the rotary cover 2 rotates to the first position, the rotary cover 2 drives the feeding bin 21 and the overflow trough 23 to move synchronously. At this time, the feeding bin 21 is arranged to the side away from the crushing bin 1, and the opening of the feeding bin 21 faces upward, which is convenient for operators or external conveying equipment to put the injection molded defective products into the feeding bin 21, so as to realize the acceptance and temporary storage of the injection molded defective products. At the same time, the liquid distribution pipe 22 is located at the top of the overflow trough 23. The external liquid supply system delivers the fluid medium into the overflow trough 23 through the liquid distribution pipe 22. The fluid medium gradually fills the overflow trough 23 and overflows from the overflow trough 23 to the top of the crushing roller 12.

[0029] When the defective injection molded products in the feeding hopper 21 accumulate to a preset amount, the drive mechanism of the rotating hood 2 is activated, driving the rotating hood 2 to rotate from the first position to the second position. During this process, the rotating hood 2 drives the feeding hopper 21 to rotate synchronously, so that the opening of the feeding hopper 21 faces the crushing chamber 1. The defective injection molded products temporarily stored in the feeding hopper 21 fall smoothly into the crushing chamber 1 under their own gravity and the action of the guide inclined surface 33, realizing fixed-point and quantitative feeding and avoiding material spillage or disorderly falling. At the same time, the rotating hood 2 drives the overflow trough 23 to rotate synchronously, so that the opening of the overflow trough 23 faces the crushing chamber 1. At this time, the liquid distribution pipe 22 continuously flows into the overflow trough 23. Liquid is supplied in the overflow trough 23, and the fluid medium in the overflow trough 23 flows to the inside of the crushing chamber 1 and the surface of the crushing roller 12. On the one hand, it can wash away the dust attached to the surface of the material, play a wet dust suppression role for the dust generated during the crushing process, and prevent dust from escaping and polluting the working environment. On the other hand, it can cool down the crushing roller 12 and the material, and prevent the injection molded defective products from softening and sticking due to frictional heat during the crushing process, thus ensuring the crushing quality and crushing efficiency. In addition, it can also wet the plastic defective products to be crushed, so that the dry friction between the plastic defective products and between the plastic defective products and the crushing roller 12 is changed to wet friction, thereby improving the crushing ability of the crushing roller 12 to crush the material.

[0030] After feeding is completed, the rotary hood 2 can rotate back to the first position, and the feeding bin 21 will face away from the crushing bin 1 again to continue to receive and temporarily store injection molded defective products. The liquid distribution pipe 22 continuously supplies liquid to the overflow tank 23, so that liquid is continuously sprayed onto the crushing roller 12 during the operation of the crushing roller 12. At the same time, the crushing roller 12 in the crushing bin 1 continuously crushes the fed material. The crushed material falls into the multi-stage sorting bin 3 and is classified and sorted under the action of the sorting medium. The first material is discharged through the bottom outlet 31, and the second material is transported to the outside of the multi-stage sorting bin 3 through the return pipe 36 and the conveyor 5, so as to realize the continuous cycle of crushing and sorting operations.

[0031] In the above technical solutions, such as Figure 8 As shown, the bottom and top of the guide inclined surface 33 are respectively provided with a first liquid outlet 34 and a second liquid outlet 35. The inner side of the first liquid outlet 34 is provided with a first filter mechanism 341, and the inner side of the second liquid outlet 35 is provided with a second filter mechanism 351. The first filter mechanism 341 and the second filter mechanism 351 can be detachable filter screens or other reasonable filter mechanisms.

[0032] Again Figure 1 and Figure 2As shown, a liquid storage tank 7 is provided on one side of the bottom of the multi-stage sorting chamber 3. A liquid inlet channel 71 is fixedly provided on one side of the liquid storage tank 7 for connecting to an external liquid supply device. A first liquid outlet channel 73 is fixedly provided on one side of the liquid storage tank 7. A liquid level sensor 74 is provided on the inner side of the liquid storage tank 7 for detecting the liquid level inside the liquid storage tank 7. A slag discharge port 75 is fixedly provided at the bottom of the liquid storage tank 7. A first connecting pipe 342 is fixedly provided at the bottom of the first filter mechanism 341. One side of the liquid storage tank 7 is connected to the first connecting pipe 342 through a control valve 72. like Figure 9 As shown, a fluid recycling mechanism 8 is provided on one side of the liquid distribution pipe 22. The fluid recycling mechanism 8 includes a fluid transfer pump 81, the inlet end of which is connected to a second outlet port 35. The fluid recycling mechanism 8 is fixedly installed at the bottom of the multi-stage sorting chamber 3. A second connecting pipe 82 is fixedly installed at the outlet end of the fluid recycling mechanism 8. A heat exchange jacket 83 is fixedly installed at one end of the second connecting pipe 82. The heat exchange jacket 83 is fixedly installed on the outside of the multi-stage sorting chamber 3. A heat exchange tube is spirally arranged on the inner side of the heat exchange jacket 83. The outer side of the heat exchange jacket 83 is provided with an inlet pipe 831 and an outlet pipe 832. The inlet pipe 831 and the outlet pipe 832 are respectively fixed to both ends of the heat exchange tube. The top of the heat exchange jacket 83 is fixedly provided with a second outlet channel 84. The top of the second outlet channel 84 is provided with a reversing valve 85. The two inlets of the reversing valve 85 are respectively fixedly provided with the second outlet channel 84 and the first outlet channel 73. The outlet of the reversing valve 85 is provided with a third connecting pipe 851. The third connecting pipe 851 is fixedly connected to the liquid distribution pipe 22.

[0033] In some examples, multiple overflow channels 23 are provided, and an overflow gap is provided between two adjacent overflow channels 23 to allow the fluid medium in the overflow channel 23 to overflow. Multiple overflow channels 23 are evenly distributed on the top of the crushing roller 12 to achieve uniform cooling and dust suppression of the crushing roller 12 and the crushing area. Multiple overflow channels 23 are interconnected on one side to form an integrally connected liquid distribution structure, which allows the fluid medium transported by the liquid distribution pipe 22 to be evenly distributed into each overflow channel 23, ensuring the overflow flow rate of each overflow channel 23, thereby forming a uniform and continuous overflow liquid curtain.

[0034] In some examples, again as Figure 7As shown, dust guide slits 211 are provided on both sides of the feeding bin 21, and the dust guide slits 211 penetrate through the two side walls of the feeding bin 21. At the same time, when the rotating cover 2 rotates to the first position, the top of the feeding bin 21 has a first width and the bottom has a second width, and the first width is greater than the second width. At this time, the feeding bin 21 is in the storage state. The vertical projection of the dust guide slit 211 is located on one side of the overflow trough 23, that is, the bottom of the dust guide slit 211 does not correspond to the overflow trough 23. This structure can prevent small debris, dust and small injection molded defective products from falling into the overflow trough 23 after falling through the dust guide slit 211 during the feeding process, and prevent impurities from accumulating in the overflow trough 23 and affecting the subsequent liquid distribution overflow effect.

[0035] Additionally, when the rotating hood 2 rotates from the first position to the second position, the feeding bin 21 faces the crushing bin 1 to complete the feeding operation, and the overflow trough 23 changes position synchronously with the rotating hood 2 and faces the crushing bin 1. At this time, the impurities and dirt attached to and remaining on the inner side of the overflow trough 23 will flow out with the fluid medium under the overflow flow of the fluid medium in the trough. At the same time, the liquid distribution pipe 22 connected to the overflow trough 23 continuously transports the fluid medium, which can flow through the surface and side wall of the feeding bin 21. Since the width of the top of the rotating hood 2 is greater than the width of the bottom when it is in the first position, it forms a bucket-shaped structure that is wider at the top and narrower at the bottom. When it rotates to the second position, the dust guide slit 211 is located at a lower position, so that the impurities flowing out of the overflow trough 23 are encased in the fluid medium, and then collected by the flushing action of the liquid distribution pipe 22 to the dust guide slit 211, and fall out and are discharged with the fluid medium from the dust guide slits 211 on both sides of the feeding bin 21.

[0036] The above technical solution relies on the coordination of structure and workstation position, without the need for additional cleaning components. By utilizing the workstation switching of the rotating hood 2, the overflow flushing of the fluid medium, and the flow guiding and impurity removal layout of the dust guide slit 211, residual impurities inside the overflow trough 23 can be automatically carried out and discharged from the dust guide slit 211, achieving a self-cleaning effect on the inside of the overflow trough 23 and avoiding the problem of long-term accumulation of impurities causing blockage of the overflow trough 23 and uneven liquid distribution. At the same time, the structure of the feeding bin 21, which is wider at the top and narrower at the bottom, ensures smooth material receiving and feeding, and also facilitates the discharge of impurities with the fluid medium.

[0037] In some examples, a rotary seat 11 is provided at the top of the crushing chamber 1, and the rotary cover 2 is rotatably mounted on the rotary seat 11. The rotary seat 11 provides a stable rotational mounting reference and support positioning base for the rotary cover 2, enabling the rotary cover 2 to smoothly rotate and switch between the first position and the second position, ensuring the coaxiality and structural stability of the rotary cover 2 during rotation. The inner side of the rotary seat 11 is provided with a limiting cavity corresponding to the outer contour of the rotary cover 2. When the rotary cover 2 rotates to the first position, both sides of the rotary cover 2 rotate into the corresponding limiting cavity. When the rotary cover 2 rotates to the second position, both sides of the rotary cover 2 also rotate into the corresponding limiting cavity.

[0038] Through the structural cooperation between the rotary seat 11 and the limiting and receiving cavity, the rotary cover 2 can achieve lateral limiting and enclosure at both the first and second positions. This can form a barrier to shield the gap between the top of the crushing chamber 1 and the rotary cover 2, effectively preventing crushing particles, dust, and fluid moisture generated during the crushing operation inside the crushing chamber 1 from escaping outward from the assembly gap. At the same time, the limiting and receiving cavity can form a circumferential limiting and positioning of the rotary cover 2 at both positions, preventing the rotary cover 2 from swaying or shifting, ensuring the accurate position of the rotary cover 2 after each position switch, and ensuring the alignment accuracy between the feeding bin 21, the overflow trough 23, and the crushing chamber 1.

[0039] In some examples, the rotating cover 2 is provided with support plates 24 at both ends along its own axial direction. The two support plates 24 are respectively arranged at the axial end positions of the rotating cover 2. The support plates 24 are rotatably assembled inside the rotating seat 11. The rotating seat 11 forms a accommodating and supporting limit for the support plates 24, so that the rotating cover 2 is integrally supported inside the rotating seat 11 by the support plates 24 at both ends. It can also rotate and swing stably between the first position and the second position by relying on the rotational cooperation between the support plates 24 and the rotating seat 11, ensuring the coaxiality and structural stability of the rotating cover 2 during rotation. The liquid distribution pipe 22 is installed by rotating axially through the support plate 24 on one side, and the liquid distribution pipe 22 and the support plate 24 form a rotational adaptation relationship. When the rotary cover 2 drives the support plate 24 to rotate and switch positions relative to the rotary seat 11, the liquid distribution pipe 22 can maintain a rotational adaptation state relative to the support plate 24, without interfering with the normal rotation of the support plate 24 and the rotary cover 2.

[0040] In the above technical solution, the support plate 24, which is far from the liquid distribution pipe 22, is driven to rotate by the drive motor 25. The drive motor 25 is fixedly installed on the outside of the rotary seat 11. A shield 14 is fixedly installed on the top of the rotary seat 11 to prevent the injection molded defective products from falling off when the rotary cover 2 rotates.

[0041] In some examples, such as Figure 10 and Figure 11 As shown, a magnetic separator 6 is rotatably installed inside the multi-stage sorting chamber 3. This magnetic separator 6 has a rotary structure and is rotatably assembled inside the cavity of the multi-stage sorting chamber 3. Its rotation direction can be flexibly set according to sorting requirements. The rotation of the magnetic separator 6 can be driven by an external drive mechanism to ensure stable and uniform rotation, adapting to the sorting conditions within the multi-stage sorting chamber 3. The arrangement of the magnetic separator 6 is compatible with the sorting medium within the multi-stage sorting chamber 3, ensuring that the magnetic separator 6 can be partially or completely immersed in the sorting medium. When the crushed defective injection-molded material falls from the crushing chamber 1 into the sorting medium within the multi-stage sorting chamber 3, the material is graded and sorted under the action of the sorting medium, forming a first material body and a second material body. At this time, the rotating magnetic separator 6 can adsorb and separate the metal impurities mixed in the material through its own magnetic properties, achieving the separation of metal impurities from the defective injection-molded material.

[0042] In the above example, the magnetic separator 6 is configured in the sorting medium, which can contact and adsorb metal impurities falling into the sorting medium in real time. It does not affect the normal sorting operation of the multi-stage sorting bin 3, nor does it interfere with the first material discharge from the discharge port 31, the return pipe 36 and the second material conveying operation of the conveyor 5. At the same time, the rotation of the magnetic separator 6 and the flow of the sorting medium work together. When the sorting medium flows, it can carry the metal impurities in it to the vicinity of the magnetic separator shaft, thereby improving the adsorption effect of the magnetic separator shaft.

[0043] In some examples, such as Figure 11 and Figure 12 As shown, the outer circumferential surface of the magnetic separator 6 is alternately distributed with magnetic adsorption zones 61 and non-magnetic release zones 62 along its circumferential direction. The magnetic adsorption zones 61 are magnetic and used to adsorb metal impurities, while the non-magnetic release zones 62 are non-magnetic and cannot adsorb metal impurities. The alternating arrangement of the two zones, combined with the uniform rotation of the magnetic separator 6, enables continuous operation of metal impurity adsorption-conveying-release, improving the separation efficiency and continuity of metal impurities. A directional guide channel 32 is provided on one side of the multi-stage separation chamber 3 corresponding to the placement position of the magnetic separator 6. The directional guide channel 32 is connected to the cavity of the multi-stage separation chamber 3, and its placement direction is adapted to the rotation trajectory of the magnetic separator 6. It is used to directionally collect and guide the metal impurities released by the magnetic separator 6, preventing metal impurities from scattering into other areas within the multi-stage separation chamber 3, ensuring that metal impurities are discharged centrally for subsequent recycling.

[0044] In addition, a stripping plate 37 is fixedly provided on one side of the directional guide channel 32. One end of the stripping plate 37 abuts against the peripheral surface of the magnetic separation roller body 6. The abutting force is appropriate to not affect the normal rotation of the magnetic separation roller body 6 and to effectively strip away metal impurities. Its core function is to strip away the metal impurities from the magnetic adsorption area 61 when the magnetic separation roller body 6, which has adsorbed metal impurities, rotates to the predetermined position, so that the metal impurities are removed from the adsorption effect of the magnetic adsorption area 61.

[0045] In the above technical solution, when the magnetic adsorption zone 61, which adsorbs metal impurities, rotates to a predetermined position where it contacts the stripping plate 37, the stripping plate 37 forcibly peels the metal impurities from the magnetic adsorption zone 61 and pushes them to the non-magnetic release zone 62, causing the metal impurities to be released from the magnetic adsorption zone 61. As the magnetic separation roller 6 continues to rotate, the peeled metal impurities will fall into the corresponding directional guide channel 32 due to the rotational inertia of the magnetic separation roller 6. At this time, the non-magnetic release zone 62 is aligned with the directional guide channel 32. The non-magnetic release zone 62 does not have adsorption capacity and will not adsorb the scattered impurities. This allows the scattered metal impurities to be collected and discharged in a concentrated manner through the guiding effect of the directional guide channel 32, preventing the metal impurities from mixing into the first or second material.

[0046] In the above technical solutions, again as Figure 2 As shown, the bottom of the multi-stage sorting bin 3 is provided with a receiving tray 10. The inner side of the receiving tray 10 is provided with a first receiving area 101, a second receiving area 102 and a third receiving area 103 corresponding to the discharge port 31, the directional guide channel 32 and the conveyor 5 to receive different materials for subsequent unified processing.

[0047] In some examples, again as Figure 10 and Figure 11 As shown, an air turbulence shaft 4 is rotatably arranged in the sorting medium within the multi-stage sorting chamber 3. The air turbulence shaft 4 has a rotary structure and is driven to rotate by an external drive mechanism. Multiple turbulence nozzles 41 are arranged on the outer side of the air turbulence shaft 4. One end of the air turbulence shaft 4 is rotatably connected to one end of the air inlet pipe 42 via a connector. The air inlet pipe 42 is connected to the turbulence nozzles 41. The air turbulence shaft 4 is arranged on one side of the magnetic separation roller body 6. Specifically, the air turbulence shaft 4 is arranged on the side below the magnetic separation roller body 6. When the air turbulence shaft 4 rotates, the turbulence nozzles 41 have a spray direction toward the magnetic separation roller body 6.

[0048] In the above technical solution, when the air turbulence shaft 4 rotates, the turbulence nozzle 41 on its outer side sprays gas to stir and tumble the sorting medium in the multi-stage sorting chamber 3, so that the defective products with different specific gravities can be better separated from the sorting medium, and the contact probability between the defective products and the magnetic separation roller 6 is increased, thereby improving the sorting efficiency; at the same time, it can stir up the metal impurities that fall faster in the sorting medium again and rush them toward the magnetic separation roller 6, thereby improving the sorting efficiency of metal impurities.

[0049] The transmission path in the above technical solution is as follows: a third umbrella-shaped pulley 63 is fixedly installed on the outside of the drive shaft of the magnetic separator 6; a second umbrella-shaped pulley 43 is fixedly installed on the outside of the air intake pipe 42 between the air intake pipe 42 and the multi-stage sorting chamber 3; several first connecting rods 53 are uniformly fixedly installed at the end of the spiral body 51 away from the multi-stage sorting chamber 3, a connecting plate 54 is fixedly installed at the end of the first connecting rod 53, a second connecting rod 55 is uniformly fixedly installed on one side of the connecting plate 54, and a first bevel gear 56 is fixedly installed at the end of the second connecting rod 55 away from the connecting plate 54; a second bevel gear 91 is fixedly installed at the other output end of the dual-shaft reducer 9, and the second bevel gear 91 meshes with the first bevel gear 56; a first umbrella-shaped pulley 122 is fixedly installed on the outside of one of the spur gears 121, and the first umbrella-shaped pulley 122 and the third umbrella-shaped pulley 63 are linked by a first toothed belt 123; the third umbrella-shaped pulley 63 and the second umbrella-shaped pulley 43 are linked by a second toothed belt 631.

[0050] In summary, the injection molding defective product handling device in this embodiment of the application is used as follows: First, the defective injection molded parts are placed into the feeding bin 21 inside the rotary cover 2. When the defective parts accumulate to a certain extent in the feeding bin 21, the drive motor 25 drives the support plate 24 to rotate, which in turn drives the rotary cover 2 to rotate, so that the opening of the feeding bin 21 faces downward and the defective parts are poured into the crushing bin 1. After the material is poured out, the drive motor 25 drives the rotary cover 2 to rotate and reset. At this time, the overflow trough 23 is located at the bottom of the liquid distribution pipe 22. After resetting, the liquid distribution pipe 22 sprays out fluid medium, which first falls into the overflow tank 23. When the overflow tank 23 is full, the fluid medium overflows and directly sprays the defective products being crushed in the crushing chamber 1. The spraying can quickly absorb the frictional heat generated during the crushing process, reduce the temperature in the crushing chamber 1, and prevent the plastic from deteriorating due to high temperature. At the same time, it also cleans the surface of the defective products. The wetted defective products and the heat-absorbing fluid medium fall directly into the multi-stage sorting chamber 3 below. During the crushing process, one output end of the dual-shaft reducer 9 drives one of the crushing rollers 12 to rotate. This crushing roller 12 drives the other crushing roller 12 to rotate in the opposite direction through two meshing spur gears 121, shearing and tearing the defective products.

[0051] During the rotation and reset process of the rotary hood 2, the overflow trough 23 will rotate to the top of the feeding bin 21. At this time, the impurities and fluid medium remaining inside the overflow trough 23 will fall onto the feeding bin 21. When the rotary hood 2 rotates to the second position, the fluid medium sprayed by the liquid distribution pipe 22 causes the dust to fall from the dust guide slits 211 opened on both sides of the feeding bin 21, thereby cleaning the overflow trough 23 and preventing dust accumulation from affecting the subsequent spraying effect. The fluid medium and the crushed defective products fall into the multi-stage sorting chamber 3. During operation, the multi-stage sorting chamber 3 maintains a certain liquid level. The first outlet 34 at the bottom controls the discharge flow rate via a control valve 72, and the second outlet 35 controls the liquid level via a fluid transfer pump 81. Inside the multi-stage sorting chamber 3, materials are classified by specific gravity using the buoyancy of the sorting medium and their own gravity: the heavier injection-molded defective products (the first material) sink to the bottom of the multi-stage sorting chamber 3 under the influence of gravity and the sorting medium, and converge at the outlet 31 under the guidance of the guide inclined surface 33. When discharge is required, the linear push rod 313 extends, causing the baffle 311 to slide open the outlet 31, allowing the first material to be discharged and fall into the first receiving area 101 of the receiving tray 10. Subsequently, the linear push rod 313 retracts, sealing the outlet 31 through the sealing gasket 312, maintaining the liquid level within the multi-stage sorting chamber 3.

[0052] When defective injection molded products containing metal fall in the sorting medium, they are attracted by the rotating magnetic separator 6. The magnetic separator 6 drives the defective products containing metal to rotate. When they rotate to the side of the stripper plate 37, they are pushed away from the magnetic adsorption area 61 by the stripper plate 37 and move to the non-magnetic release area 62. Since the non-magnetic release area 62 has no magnetic force, the material loses its adsorption force and falls onto the directional guide channel 32, automatically sliding down into the second receiving area 102 of the receiving tray 10, thus realizing the automatic separation of metal impurities. The lighter injection-molded defective product (second material) floats above the sorting medium in the multi-stage sorting bin 3. The conveyor 5 at the top rotates, and the screw 51 screws the second material from the upper surface of the sorting medium out of the multi-stage sorting bin 3 and into the third receiving area 103 of the receiving tray 10. During the conveying process, the sorting medium is filtered down through the filter pipe 52 and returned to the inside of the multi-stage sorting bin 3 through the return pipe 36 to prevent the sorting medium from being lost with the material. At the same time, the air turbulence shaft 4 rotates, and the turbulence nozzle 41 on its outer side sprays out gas to stir and tumble the sorting medium in the multi-stage sorting chamber 3, so that the defective products with different specific gravities can be better separated from the sorting medium and the contact probability with the magnetic separation roller 6 can be increased, thereby improving the sorting efficiency. Meanwhile, the fluid transfer pump 81 extracts the warm sorting medium, which has absorbed the heat of pulverization, from the multi-stage sorting chamber 3 through the second liquid outlet 35. The sorting medium flows through the second connecting pipe 82 into the heat exchange jacket 83. The heat exchange jacket 83 is fixed to the outside of the multi-stage sorting chamber 3, and its inlet pipe 831 and outlet pipe 832 are connected to external cooling equipment. The coolant provided by the external cooling equipment flows in the heat exchange tubes inside the heat exchange jacket 83, exchanging heat with the sorting medium in the second connecting pipe 82, carrying away the heat carried by the sorting medium, and thus cooling the sorting medium. The cooled sorting medium re-enters the distribution pipe 22 through the second liquid outlet channel 84, the reversing valve 85, and the third connecting pipe 851, realizing a closed-loop recycling of the cooled sorting medium.

[0053] When the system needs to replenish new sorting media, the sorting media in the storage tank 7 is replenished through the inlet channel 71, the liquid level sensor 74 detects the liquid level, and the sorting media is replenished into the distribution pipe 22 through the first outlet channel 73 and the reversing valve 85; the sorting media discharged from the first outlet hole 34 at the bottom of the multi-stage sorting tank 3 is filtered by the first filter mechanism 341 and can be discharged into the storage tank 7 through the first connecting pipe 342 and the control valve 72. The slag discharge port 75 at the bottom of the storage tank 7 is used to periodically discharge the deposited bottom slag.

[0054] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of the present invention.

Claims

1. A device for processing defective injection molded products, characterized in that, include: A crushing chamber, wherein crushing rollers are installed inside the crushing chamber; A multi-stage sorting bin is connected to the bottom end of the crushing bin. The multi-stage sorting bin is filled with sorting medium. A discharge port is opened at the bottom end of the multi-stage sorting bin for discharging the first material separated from the bin. A return pipe is opened on one side of the multi-stage sorting bin. A conveyor is installed in the return pipe. The conveyor can transport the second material separated from the bin to the outside of the multi-stage sorting bin. A rotary hood is rotatably mounted on the top of the crushing chamber. One end of the rotary hood is provided with a feeding hopper, and the other end of the rotary hood is provided with an overflow trough. A liquid distribution pipe is connected to one side of the rotary hood and extends to one side of the overflow trough. The rotating hood is rotatable between a first position and a second position. When the rotating hood is rotated to the first position, the feeding bin faces away from the crushing bin, and the liquid distribution pipe is located at the top of the overflow trough. When the rotating hood is rotated to the second position, the feeding bin feeds material towards the crushing bin, and the overflow trough is positioned towards the crushing bin.

2. The injection molding defective product processing device according to claim 1, characterized in that, Multiple overflow channels are provided, which are evenly distributed on the top of the crushing roller. The multiple overflow channels are connected on one side, and the liquid distribution pipe extends to the connection point of the overflow channels.

3. The injection molding defective product processing device according to claim 1, characterized in that, When the rotating hood rotates to the first position, the top of the feeding bin has a first width, and the bottom of the feeding bin has a second width, wherein the first width is greater than the second width; Dust-guiding slits are provided on both sides of the feeding hopper. When the rotating hood is rotated to the first position, the vertical projection of the dust-guiding slits is located on one side of the overflow trough.

4. The injection molding defective product processing device according to claim 1, characterized in that, The top of the crushing chamber is provided with a rotary seat, and the rotary cover is rotatably mounted on the rotary seat; The inner side of the rotary seat is provided with a limiting cavity corresponding to the rotary cover. When the rotary cover rotates to the first position and the second position, its two sides respectively rotate into the corresponding limiting cavity.

5. The injection molding defective product processing device according to claim 4, characterized in that, The rotating cover is provided with support plates at both ends along the axial direction, and the support plates are rotatably disposed inside the rotating seat. The liquid distribution pipe is rotatably disposed through the support plate.

6. The injection molding defective product processing device according to claim 1, characterized in that, The multi-stage sorting chamber is equipped with rotating magnetic separation rollers.

7. The injection molding defective product processing device according to claim 6, characterized in that, The magnetic separator roller is disposed in the sorting medium.

8. The injection molding defective product processing device according to claim 6, characterized in that, The outer periphery of the magnetic separator is provided with magnetic adsorption zones and non-magnetic release zones that are alternately distributed along the circumferential direction. A directional flow channel is provided on one side of the multi-stage sorting bin corresponding to the magnetic separation roller body, and the directional flow channel is connected to the multi-stage sorting bin. A stripping plate is provided on one side of the directional guide channel. The stripping plate abuts against the periphery of the magnetic separation roller and is used to remove the material from the magnetic adsorption area when the material rotates to a predetermined position with the magnetic separation roller.

9. The injection molding defective product processing device according to claim 6, characterized in that, The multi-stage sorting chamber is equipped with an air disturbance shaft that rotates within the sorting medium, and multiple turbulence nozzles are arranged on the outer side of the air disturbance shaft. The air turbulence shaft is disposed on one side of the magnetic separation roller. When the air turbulence shaft rotates, the turbulence nozzle has a spray direction toward the magnetic separation roller.

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