CN118162442B - Waste recycling device for injection molding parts - Google Patents

Abstract

The invention relates to the technical field of injection molding waste recovery, in particular to a waste recovery device for injection molding, which comprises a pretreatment mechanism, wherein the pretreatment mechanism carries out preliminary crushing treatment on a large-volume injection molding so as to reduce the volume of the injection molding; the crushing mechanism is used for crushing the injection molding piece with the reduced volume through two mutually meshed grinding wheels; the separating mechanism separates the metal blocks doped in the injection molding by utilizing the rule that metal can move in a magnetic field; the conveying mechanism conveys the separated injection molding pieces out; the washing spray gun is used for carrying out spray cleaning on the injection molding piece on the conveying mechanism; the injection molding piece can be dried and recycled through the drying mechanism. The invention has the beneficial effects that: the injection molding part is broken more thoroughly through pretreatment, and the doped metal in the injection molding part can be separated through the separating mechanism and is washed by the washing spray gun.

Description

Waste recycling device for injection molding parts

Technical Field

The invention relates to the technical field of injection molding waste recycling, in particular to a waste recycling device for injection molding.

Background

The injection molding product is a product formed by heating, plasticizing and melting plastic by an injection molding machine, injecting the plastic into a cavity of a molding mold for molding, cooling, solidifying the melt, demolding, and injecting by the injection molding machine, and the waste utilization is to collect the material which is originally discarded, decompose and prepare a new product, or collect the used product for sale after being treated, and a support for recycling considers that the garbage can be manufactured and the consumption of raw materials can be reduced. In the normal injection molding process, after the injection molding of the product is finished, due to the existence of a runner and a glue inlet point, some waste materials exist, under normal conditions, the waste materials are generally collected by using a material frame, and then after the unified collection is finished, unified crushing treatment is carried out.

In "a waste recycling device for injection mold" of publication No. CN115319964B ", it includes the water guide seat, it has clear water to pour into in the water guide seat, and fixedly connected with collection box on the water guide seat, the rotation is connected with two refrigeration axles in the collection box, and has all fixedly cup jointed crushing roller on two refrigeration axles, the refrigeration axle passes through pipe and corresponding crushing roller intercommunication, and has all poured into cold water in refrigeration axle and the crushing roller. The invention can automatically regulate and control the water spraying amount according to the dust degree, can recycle the generated wastewater, greatly saves water resources, can continuously change the position of the vibration mechanism in the crushing process, and improves the vibration range of the screen so as to further improve the screening effect of the screen.

However, in actual use, recycling personnel find that recycled injection molding scrap is often not virgin plastic, but is also doped with a large amount of metal articles. Such as air switches, splice plastic parts using screw connections, etc., which contain metal objects therein that are recovered along with the broken plastic when broken, which results in a large amount of metal impurities during the subsequent re-furnace melting operation.

In order to cope with the above problems, there is a need for a scrap recycling apparatus for injection molded articles.

Disclosure of Invention

The invention aims to provide a waste recycling device for injection molding parts, which aims to solve the problems in the background art.

In order to achieve the above object, there is provided a scrap recycling apparatus for injection molding, comprising;

The pretreatment mechanism is used for carrying out preliminary crushing treatment on the large-volume injection molding piece, so that the volume of the injection molding piece is reduced;

The crushing mechanism is used for crushing the injection molding piece with the reduced volume through two mutually meshed grinding wheels;

The separating mechanism separates the metal blocks doped in the injection molding by utilizing the rule that metal can move in a magnetic field;

The conveying mechanism conveys the separated injection molding pieces out;

the washing spray gun is used for carrying out spray cleaning on the injection molding piece on the conveying mechanism;

and the transported injection molding part enters the drying mechanism to be dried and recycled.

Further, pretreatment mechanism includes shell, drive shaft, quartering hammer, crushing sword and crossbeam, the top of shell sets up the feed inlet, quartering hammer and crushing sword are annular arrangement and set up in the drive shaft, the quantity of quartering hammer, crushing sword and crossbeam is a plurality of the crossbeam equidistance is erect on the inner wall of shell, the crushing sword passes between the interval of crossbeam under the drive of drive shaft to will fall on the crossbeam simultaneously and cut off or chop, after the quartering hammer is broken with massive injection molding, some relatively bigger injection molding falls on the crossbeam.

Further, the crushing mechanism is arranged in the shell, the crushing mechanism is located below the cross beam, grinding teeth are arranged on the surface of the grinding wheel, the grinding teeth are spirally arranged in the direction of the extending shaft of the grinding wheel, and the grinding teeth are annularly arranged on the axial plane of the grinding wheel.

Further, the separating mechanism comprises a box body, a separating box and a collecting cover, wherein the separating box is obliquely and fixedly arranged on the inner wall of the box body, the collecting cover is arranged right below the crushing mechanism, the outlet of the collecting cover is communicated with an opening at the top of the separating box, a plurality of independent cavities are isolated from the inside of the separating box through a plurality of separation plates, the box wall of each independent cavity is wound with an electrifying coil, an injection molding piece discharging opening and a metal discharging opening are arranged on the separating box, the injection molding piece discharging opening is arranged at the bottom of the separating box, the metal discharging opening is arranged at the end, the metal discharging opening is arranged at one end with a lower horizontal position, the electrifying coil is arranged in an interlayer of the box wall of the separating box, due to the fact that the separating box is obliquely arranged, crushed injection molding pieces can pass through the injection molding piece discharging opening and are discharged, metal doped in the separating box is accelerated to move forwards under the electrifying condition, and the influence of the magnetic field is generated by each independent cavity due to the electrifying coil, so that the injection molding piece discharging opening is discharged from the metal discharging opening.

Further, the bottom of the inner cavity of the box body is also provided with a magnetic block for adsorbing metal doped in the injection molding piece, the bottom of the inner cavity of the box body is provided with a baffle plate, and the baffle plate is between the injection molding piece discharge port and the metal discharge port so as to block movement of the metal, and the box body is divided into a metal collecting cavity and an injection molding piece collecting cavity by the baffle plate.

Further, the transport mechanism sets up inside the box, and wherein transport mechanism includes the conveyer belt and sets up the push plate at the conveyer belt outside surface, the lateral wall of box is provided with the delivery bridge, the delivery bridge is built with the form of conveyer belt, and a plurality of drainage holes have been seted up on the surface of wherein the conveyer belt, and the injection molding that transports through the push plate is sent into drying mechanism through the delivery bridge in.

Furthermore, the flushing spray gun is arranged at the bottom of the separation box and is obliquely arranged, the corresponding angle regulator can be arranged for angle regulation, the flushing spray gun is used for flushing injection molding pieces, impact force generated by water flow of the flushing spray gun acts on the conveying mechanism, the component force generated by the impact force can push the conveying mechanism to rotate, and the flushing spray gun finishes the cleaning work of subsequent injection molding pieces along with the advancing of the conveying mechanism.

Further, drying mechanism includes stoving section of thick bamboo, filtration pore and water collecting tank, the entry and the delivery bridge of stoving section of thick bamboo are connected, the filtration pore is established on the curved wall of stoving section of thick bamboo, the water collecting tank comprises two segmentation structures, and one of them is semicircle arc structure, is located the below of delivery bridge, and another one is tubular structure, and the cover is established in the outside of stoving section of thick bamboo, drying mechanism still includes support, bearing frame and the electric heating element and the gate of unloading of setting on the stoving section of thick bamboo, and wherein the top at the support is installed to the bearing frame, the both ends of stoving section of thick bamboo all are provided with the pivot, and the stoving section of thick bamboo is connected with the bearing frame on the support through the pivot.

Further, the shell and the box body are provided with driving motors for driving the pretreatment mechanism, the crushing mechanism and the drying mechanism.

Further, the box is further provided with a water pump, a water source is provided for flushing the spray gun through the water pump, the water circulation outside the box is completed, the water level line in the box is controlled by the water pump to be not higher than the maximum height of the pushing plate when the water level line is beyond the baffle, under the condition that the water level line is beyond the baffle, the injection molding part is influenced by buoyancy of water and can float on the water surface, so that even a small amount of injection molding part is discharged into the metal collecting cavity from the metal discharging port, the injection molding part can enter the upper area of the collecting cavity of the injection molding part along with water flow, and finally the injection molding part is sent by the conveying mechanism.

Compared with the prior art, the invention has the beneficial effects that:

1. By designing the separation box, each cavity of the separation box generates a magnetic field with adjustable strength, so that the metal doped in the injection molding piece can be discharged at a higher speed, and the metal can be discharged from a different discharge port with the injection molding piece, thereby realizing the separation effect of the injection molding piece and the metal;

2. The magnet and the baffle are arranged at the bottom of the box body, so that the injection molding piece or the metal with partial separation errors can be separated by utilizing the mass of the injection molding piece and the metal and the difference of magnetic force influence;

3. Can realize cleaning function to broken injection molding through washing the spray gun, wash the spray gun simultaneously and wash the injection molding in, the impact force that its rivers produced acts on transport mechanism, and the component that this impact force produced can promote transport mechanism and rotate, along with transport mechanism's advancing, wash the spray gun and accomplish the cleaning of follow-up injection molding, through the combination of washing spray gun and transport mechanism, realized pipelined's cleaning and transportation work, not only very big saving the inner space, still reduced corresponding energy supply simultaneously.

Drawings

FIG. 1 is a schematic diagram of an internal structure of an embodiment of the present invention;

FIG. 2 is a schematic diagram of a combination of a pretreatment mechanism and a rebound mechanism in an embodiment of the present invention;

FIG. 3 is a schematic view of a crushing mechanism according to an embodiment of the present invention;

FIG. 4 is a schematic diagram of a separator tank according to an embodiment of the present invention;

FIG. 5 is a schematic diagram of a partial structural assembly in accordance with an embodiment of the present invention;

Fig. 6 is a schematic structural diagram of a drying mechanism according to an embodiment of the present invention;

Fig. 7 is a schematic three-dimensional structure of an embodiment of the present invention.

The meaning of each reference sign in the figure is:

1. A pretreatment mechanism; 101. a housing; 102. a drive shaft; 103. a breaking hammer; 104. a crushing knife; 105. a cross beam; 2. a crushing mechanism; 201. a grinding wheel; 202. grinding the teeth; 3. a separation mechanism; 301. a case; 302. a separation box; 303. a collection cover; 304. a partition plate; 305. an injection molding outlet; 306. a metal discharge port; 4. a transport mechanism; 401. a conveyor belt; 402. a pushing plate; 5. flushing the spray gun; 6. a drying mechanism; 601. a drying cylinder; 602. a filter hole; 603. a water collection tank; 7. a baffle; 8. a conveyor bridge; 9. a rebound assembly; 901. a roll shaft; 902. a linkage plate; 903. rebound lining board; 904. and a hydraulic cylinder.

Detailed Description

The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are only some embodiments of the present invention, but not all embodiments, and all other embodiments obtained by those skilled in the art without making creative efforts based on the embodiments of the present invention are included in the protection scope of the present invention.

As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless expressly stated otherwise, as understood by those skilled in the art. It will be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.

Referring to fig. 1-7, there is provided a waste recycling device for injection molding, comprising;

The pretreatment mechanism 1 is used for carrying out preliminary crushing treatment on a large-volume injection molding piece by the pretreatment mechanism 1 so as to reduce the volume of the injection molding piece;

The pretreatment mechanism 1 further comprises a rebound assembly 9 arranged on the shell 101, wherein the rebound assembly 9 is provided with three groups in total and comprises a roll shaft 901, a linkage plate 902, rebound lining plates 903 and a hydraulic cylinder 904, wherein a plurality of rebound lining plates 903 are arranged on the inner wall of the shell 101 through the roll shaft 901, a plurality of rebound lining plates 903 are fixed together through the linkage plate 902, the hydraulic cylinder 904 is fixed on the outer wall of the shell 101, the power output end of the hydraulic cylinder 904 penetrates through the shell 101 and acts on the linkage plate 902, a plurality of rebound blocks are further arranged on the rebound lining plates 903, the rebound angle of the rebound assembly 9 can be adjusted through the expansion and contraction of the hydraulic cylinder 904, so that a large volume of injection molding pieces are treated more thoroughly, and the pretreated injection molding pieces enter the crushing mechanism 2 under the action of gravity;

The crushing mechanism 2 is used for crushing the injection molding with the reduced volume through two mutually meshed grinding wheels 201, and the crushed injection molding enters the separating mechanism 3 under the action of gravity;

The separating mechanism 3 separates the metal blocks doped in the injection molding by utilizing the rule that metal can move in a magnetic field by the separating mechanism 3;

the conveying mechanism 4 conveys the separated injection molding parts into the drying mechanism 6 for drying;

a flushing spray gun 5, wherein the flushing spray gun 5 carries out jet cleaning on injection molding pieces on the conveying mechanism 4;

the drying mechanism 6 is used for drying and recycling the transported injection molding pieces;

the shell 101 and the box 301 are provided with driving motors for driving the pretreatment mechanism 1, the crushing mechanism 2 and the drying mechanism 6.

As shown in fig. 1 and 2:

The pretreatment mechanism 1 comprises a shell 101, a driving shaft 102, a breaking hammer 103, a breaking knife 104 and a cross beam 105, wherein a feed inlet is formed in the top of the shell 101, the breaking hammer 103 and the breaking knife 104 are arranged on the driving shaft 102 in an annular arrangement, a plurality of breaking hammers 103, the breaking knives 104 and the cross beam 105 are arranged on the inner wall of the shell 101 at equal intervals, the breaking knife 104 passes through the space between the cross beams 105 under the driving of the driving shaft 102 and cuts or chops injection molding pieces falling on the cross beam 105, and when the breaking hammer 103 breaks large injection molding pieces, the breaking knife 104 chops or chops the injection molding pieces into the breaking mechanism 2;

it should be noted that the installation space of the crushing blade 104 is the same as the installation space of the cross beam 105, that is, the crushing blade 104 is located in the installation space of the cross beam 105, and the cross beam 105 is located in the installation space of the crushing blade 104, and the crushing blade 104 sweeps the space of the cross beam 105 when rotating;

The side wall of the breaking hammer 103 is also provided with breaking teeth, so that the injection molding piece can be broken conveniently.

As shown in fig. 3:

The crushing mechanism 2 is arranged in the shell 101, the crushing mechanism 2 is positioned below the cross beam 105, the surface of the grinding wheel 201 is provided with crushing teeth 202, the crushing teeth 202 are spirally arranged in the direction of the extension axis of the grinding wheel 201, the crushing teeth 202 are annularly arranged on the axial plane of the grinding wheel 201, the rotation directions of the two grinding wheels 201 are opposite, and the crushing teeth 202 are mutually meshed to crush injection molding pieces.

As shown in fig. 4 and 5:

The separating mechanism 3 comprises a box 301, a separating box 302 and a collecting cover 303, wherein the separating box 302 is obliquely and fixedly arranged on the inner wall of the box 301, the collecting cover 303 is positioned right below the crushing mechanism 2, the outlet of the collecting cover is communicated with the opening at the top of the separating box 302, the inside of the separating box 302 is separated into a plurality of independent cavities by a plurality of separation plates 304, the box wall of each independent cavity is wound with an energizing coil, the separating box 302 is provided with an injection molding outlet 305 and a metal outlet 306, the injection molding outlet 305 is arranged at the bottom of the separating box 302, the metal outlet 306 is positioned at the end, and the metal outlet 306 is positioned at the lower end of the horizontal position, namely, the metal outlet 306 is positioned at the lower end of the inclined direction;

It is noted that by varying the magnitude of the current, the magnitude of the magnetic field generated by the energized coil can be correspondingly varied, and as the current in the energized coil becomes greater, the metal doped in the injection molding can achieve a faster rate, which allows the metal doped therein to better pass over the injection molding outlet 305;

It is noted that the bottom of the inner cavity of the box 301 is further provided with a magnetic block for adsorbing the metal doped in the injection molding piece, the bottom of the inner cavity of the box 301 is provided with a baffle 7, the baffle 7 is between the injection molding piece outlet 305 and the metal outlet 306 to block the movement of the metal, and the box 301 is divided into a metal collecting cavity and an injection molding piece collecting cavity by the baffle 7;

The box 301 is further provided with a water pump, the water pump is used for providing a water source for the flushing spray gun 5 and completing water circulation inside and outside the box 301, a water level line in the box 301 is controlled by the water pump to be not more than the maximum height of the pushing plate 402 while being over the baffle 7, under the condition that the water level line is over the baffle 7, the injection molding part floats on the water surface under the influence of buoyancy of water, so that even if a small amount of injection molding part is discharged into the metal collecting cavity from the metal discharge port 306, the injection molding part enters the area above the metal collecting cavity along with water flow, and finally is sent into the drying mechanism 6 by the conveying mechanism 4;

Under normal conditions, the doped metal in the injection molding piece can accelerate to pass through the injection molding piece outlet 305 under the action of a magnetic field and finally is discharged through the metal outlet 306, but the metal possibly is blocked by the injection molding piece in the process and discharged from the injection molding piece outlet 305 into an injection molding piece collecting cavity, at the moment, the metal is submerged under the water due to the gravity of the metal and the magnetic force of a bottom magnet, the injection molding piece in the injection molding piece collecting cavity floats on the water surface under the influence of buoyancy, and therefore, the metal in the injection molding piece collecting cavity and the injection molding piece realize a separation effect;

Likewise, broken injection molding may be impacted by metal to pass through the injection molding outlet 305 and finally be discharged through the metal outlet 306 into the metal collecting cavity, the same metal is submerged under the water by the gravity of the metal and the magnetic force of the bottom magnet, and the injection molding floats on the water surface under the influence of buoyancy;

Note that: under normal conditions, more metal is collected in the metal collecting cavity, the baffle 7 is arranged to block the movement of the metal, and meanwhile, the water level line in the box 301 is ensured to be beyond the baffle 7, so that an injection molding piece in the metal collecting cavity floats up to cross the baffle 7 and is not limited by the blocking of the baffle 7, and the separation effect of the metal in the metal collecting cavity and the injection molding piece is realized;

As shown in fig. 1 and 5:

The conveying mechanism 4 is arranged in the box 301, wherein the conveying mechanism 4 comprises a conveying belt 401 and a pushing plate 402 arranged on the outer surface of the conveying belt 401, a conveying bridge 8 is arranged on the side wall of the box 301, the conveying bridge 8 is constructed in a conveying belt mode, a plurality of water filtering holes are formed in the surface of the conveying belt, and injection molding parts conveyed through the pushing plate 402 are conveyed into the drying mechanism 6 through the conveying bridge 8;

The washing spray gun 5 is arranged at the bottom of the separation box 302, the washing spray gun 5 is obliquely arranged, the washing spray gun 5 can be provided with a corresponding angle adjuster for adjusting the angle, the washing spray gun 5 washes injection molding parts, an impact force generated by water flow of the washing spray gun 5 acts on the conveying mechanism 4, a component force generated by the impact force can push the conveying mechanism 4 to rotate, the washing spray gun 5 finishes the cleaning work of subsequent injection molding parts along with the advancing of the conveying mechanism 4, and the combination of the washing spray gun 5 and the conveying mechanism 4 realizes the pipelined cleaning and conveying work, so that the internal space is greatly saved, and corresponding energy supply is reduced.

As shown in fig. 6:

The drying mechanism 6 comprises a drying cylinder 601, a filtering hole 602 and a water collecting tank 603, wherein an inlet of the drying cylinder 601 is connected with a conveying bridge 8, the filtering hole 602 is arranged on a curved wall of the drying cylinder 601, the water collecting tank 603 is composed of a two-section structure, one section is of a semicircular arc structure and is positioned below the conveying bridge 8, the other section is of a cylindrical structure and is sleeved outside the drying cylinder 601, the drying mechanism 6 further comprises a support, a bearing seat, an electric heating assembly and a discharge gate, the electric heating assembly and the discharge gate are arranged on the drying cylinder 601, the bearing seat is arranged at the top end of the support, two ends of the drying cylinder 601 are respectively provided with a rotating shaft, and the drying cylinder 601 is connected with the bearing seat on the support through the rotating shafts;

The whole drying cylinder 601 rotates under the drive of the driving mechanism, residual water on the surface of the injection molding part is thrown out under the action of centrifugal force, meanwhile, water can be quickly dried through the electric heating assembly, a thrown water source passes through the water collecting tank 603, and the water collecting tank 603 can form a water circulation device with the water source inside the tank 301 through the water pump;

It is noted that the water source collected by the water collection tank 603 may be subjected to precipitation or purification treatment in order to ensure the water source is clean and the injection-molded article is cleaned.

Working principle:

the injection molding piece enters through a feed port at the top of the shell 101, the breaking hammer 103 can scatter the injection molding piece along with the rotation of the breaking hammer 103 and the breaking knife 104, the breaking knife 104 can chop or cut the scattered injection molding piece, in order to improve the pretreatment effect, a plurality of cross beams 105 which are equidistantly arranged are arranged in the lower area of the breaking hammer 103 and the breaking knife 104, so that some injection molding pieces exceeding the spacing are blocked by two adjacent cross beams 105, as can be seen from fig. 1, the breaking knife 104 can sweep the spacing between the cross beams 105, and thus the breaking knife 104 can chop the injection molding piece between the two cross beams 105 or drop the injection molding piece into the breaking mechanism 2;

It should be noted that the angle of the rebound liner 903 can be adjusted by the hydraulic cylinder 904, so that the injection molding piece can rebound continuously inside the pretreatment mechanism 1, and a better crushing effect can be obtained;

After entering the crushing mechanism 2, the scattered injection molded parts are further crushed by the grinding wheel 201 and the crushing teeth 202 and collected into the inside of the separating mechanism 3 through the collecting hood 303;

At this time, the injection molding piece falls into the independent chambers through the openings at the top of the separation box 302, and because the energizing coil is wound in the wall of each independent chamber, each independent chamber can generate a magnetic field, in order to avoid the interference of the adjacent magnetic fields, a magnetic field isolation material can be arranged in the separation plate 304, and the metal doped in the injection molding piece can accelerate forward movement under the action of the magnetic field, so that the metal is discharged from the metal discharge port 306 into the metal collection chamber through the injection molding piece discharge port 305;

The injection molding piece is not influenced by the magnetic field, slides along the separation box 302 under the influence of gravity, and is discharged from the injection molding piece discharge port 305 into the injection molding piece collection cavity;

however, in the actual use process, a small amount of metal is inevitably discharged from the injection molding part discharge port 305, and a small amount of injection molding part is discharged from the metal discharge port 306, so that a magnet capable of adsorbing metal is arranged at the bottom of the inner cavity of the box 301, and most of metal has higher density than water and can be settled, so that the metal can be quickly settled to the bottom of the box 301 under the double action of magnetic force, and is prevented from being rolled by the conveying mechanism 4;

Under normal conditions, more metal is collected in the metal collection cavity, the baffle 7 is arranged to block the movement of the metal, and meanwhile, the water level line in the box 301 is ensured to be beyond the baffle 7, so that the injection molding piece in the metal collection cavity floats up and passes over the baffle 7 without being blocked and limited by the baffle 7, and the injection molding piece floating on the water surface is finally conveyed to the inside of the drying mechanism 6 by the conveying mechanism 4 along with the rotation of the conveying mechanism 4 and the flow of water flow in the box 301, so that the separation effect of the metal in the metal collection cavity and the injection molding piece is realized;

In the drying mechanism 6, the whole drying cylinder 601 rotates under the drive of the driving mechanism, residual water on the surface of the injection molding piece is thrown out under the action of centrifugal force, meanwhile, the electric heating assembly can rapidly dry water, a thrown water source passes through the water collecting tank 603, the water collecting tank 603 can form a water circulation device with the water source inside the box 301 through a water pump, and then the recycling work of waste materials can be completed through the discharging gate arranged on the drying cylinder 601.

The foregoing has shown and described the basic principles, principal features and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the above-described embodiments, and that the above-described embodiments and descriptions are only preferred embodiments of the present invention, and are not intended to limit the invention, and that various changes and modifications may be made therein without departing from the spirit and scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims (9)

1. A scrap recycling device for injection molded parts, comprising:

the pretreatment mechanism (1) is used for carrying out preliminary crushing treatment on a large-volume injection molding piece by the pretreatment mechanism (1) so as to reduce the volume of the injection molding piece;

The crushing mechanism (2) is used for crushing the injection molding piece with the reduced volume through two mutually meshed grinding wheels (201);

The separating mechanism (3) is used for separating the metal blocks doped in the injection molding piece by utilizing a rule that metal can move in a magnetic field, the separating mechanism (3) comprises a box body (301), a separating box (302) and a collecting cover (303), the separating box (302) is obliquely and fixedly arranged on the inner wall of the box body (301), the collecting cover (303) is positioned right below the crushing mechanism (2), an outlet of the collecting cover is communicated with an opening at the top of the separating box (302), a plurality of independent chambers are isolated from the inside of the separating box (302) through a plurality of separation plates (304), an energizing coil is wound on the side wall of each independent chamber, an injection molding piece outlet (305) and a metal outlet (306) are arranged on the separating box (302), the injection molding piece outlet (305) is arranged at the bottom of the separating box (302), the metal outlet (306) is positioned at the end, and the metal outlet (306) is positioned at one end with a lower horizontal position;

a transport mechanism (4), wherein the transport mechanism (4) transports out the separated injection molding;

The flushing spray gun (5), the flushing spray gun (5) sprays and cleans injection molding pieces on the conveying mechanism (4) and simultaneously provides power for the conveying mechanism (4);

and the transported injection molding part enters the drying mechanism (6) for drying treatment and recovery.

2. The injection molding scrap recycling apparatus according to claim 1, wherein: pretreatment mechanism (1) including shell (101), drive shaft (102), quartering hammer (103), crushing sword (104) and crossbeam (105), the top of shell (101) sets up the feed inlet, quartering hammer (103) and crushing sword (104) are annular range and set up on drive shaft (102), the quantity of quartering hammer (103), crushing sword (104) and crossbeam (105) is a plurality of crossbeam (105) equidistance is erect on the inner wall of shell (101), pass between the interval of crossbeam (105) under the drive of drive shaft (102) crushing sword (104) to cut off or chop the injection molding that falls on crossbeam (105) simultaneously.

3. The injection molding scrap recycling apparatus according to claim 2, wherein: the crushing mechanism (2) is arranged in the shell (101), the crushing mechanism (2) is located below the cross beam (105), crushing teeth (202) are arranged on the surface of the grinding wheel (201), the crushing teeth (202) are spirally arranged in the extending shaft direction of the grinding wheel (201), and the crushing teeth (202) are annularly arranged on the axial plane of the grinding wheel (201).

4. A scrap recycling apparatus for injection molded parts according to claim 3, wherein: the bottom of the inner cavity of the box body (301) is also provided with a magnetic block for adsorbing metal doped in the injection molding piece, the bottom of the inner cavity of the box body (301) is provided with a baffle (7), and the baffle (7) is limited between the injection molding piece discharge port (305) and the metal discharge port (306) so as to block movement of the metal.

5. The injection molding scrap recycling apparatus according to claim 4, wherein: the conveying mechanism (4) is arranged inside the box body (301), wherein the conveying mechanism (4) comprises a conveying belt (401) and a pushing plate (402) arranged on the outer surface of the conveying belt (401), and a conveying bridge (8) is arranged on the side wall of the box body (301).

6. The injection molding scrap recycling apparatus according to claim 5, wherein: the flushing spray gun (5) is arranged at the bottom of the separation box (302), and the flushing spray gun (5) is obliquely arranged.

7. The injection molding scrap recycling apparatus according to claim 6, wherein: the drying mechanism (6) comprises a drying cylinder (601), a filtering hole (602) and a water collecting tank (603), wherein an inlet of the drying cylinder (601) is connected with a conveying bridge (8), the filtering hole (602) is formed in a curved wall of the drying cylinder (601), the water collecting tank (603) is composed of a two-section structure, one section is of a semicircular arc structure and is located below the conveying bridge (8), and the other section is of a cylindrical structure and is sleeved outside the drying cylinder (601).

8. The injection molding scrap recycling apparatus according to claim 7, wherein: the shell (101) and the box body (301) are provided with driving motors for driving the pretreatment mechanism (1), the crushing mechanism (2) and the drying mechanism (6).

9. The injection molded part scrap recycling apparatus according to claim 8, wherein: the tank body (301) is also provided with a water pump, and the water pump is used for providing a water source for the flushing spray gun (5) and completing water circulation inside and outside the tank body (301).