Automatic purification mechanism, purification device and material purification method

Abstract

The invention relates to the technical field of injection molding, and particularly discloses an automatic purification mechanism, a purification device and a material purification method.In the automatic purification mechanism, a shell is provided with a material distribution cavity, a feeding port, a first discharging port and a second discharging port, the feeding port, the first discharging port and the second discharging port are communicated with the material distribution cavity, and the feeding port is higher than the first discharging port and the second discharging port; the first slideway is arranged in the distributing cavity, the upper end of the first slideway is communicated with the feeding hole, the lower end of the first slideway is communicated with the first discharging hole, and a leaking hole is formed in the bottom of the first slideway; the second slide way is positioned below the first slide way to receive impurities falling from the leakage hole, and the lower end of the second slide way is communicated with the second discharge hole; the lifting assembly is arranged in the material distributing cavity, a lifting inlet of the lifting assembly is located above the first discharging port and communicates with the upper end of the first sliding way, a discharging port of the lifting assembly communicates with the lower end of the first sliding way, and the lifting assembly can pump materials sliding down from the lower end of the first sliding way to the upper end of the first sliding way again. According to the arrangement, the appearance yield of the product surface is improved.

Description

Technical Field

[0001] The invention relates to the technical field of injection molding, and in particular to an automatic purification mechanism, a purification device and a material purification method. Background Art

[0002] Injection molding, also known as injection molding, has the advantages of fast production speed, high efficiency, automated operation, a wide variety of colors and patterns, shapes from simple to complex, sizes from large to small, and precise product dimensions. The product is easy to update and can form complex-shaped parts. Injection molding is suitable for mass production and molding processing fields such as complex-shaped products.

[0003] During the injection molding process, impurities such as debris and other tiny particles will adhere to the edges or outer surfaces of plastic particles (especially white raw material particles). During the plasticization process, they are easily attached to the screw and barrel side walls of the injection molding machine. Long-term accumulation will cause carbonization, thus forming black spots and different-colored molten plastic. When these molten plastics with black spots and different colors are injected into the product, black spots and different colors will form on the surface of the product, resulting in defective appearance phenomena, thus producing defective products.

[0004] Therefore, it is urgent to study an automatic purification mechanism, a purification device and a material purification method to remove impurities such as debris and other tiny particles on the plastic particles to avoid carbonization of the screw and the side wall of the barrel, thereby improving the yield rate. Summary of the invention

[0005] The object of the present invention is to provide an automatic purification mechanism, a purification device and a material purification method to solve the problem in the prior art that impurities such as debris on plastic particles are carbonized on the side walls of the screw and the barrel to form black spots and discolored molten plastic, resulting in poor product surface appearance and reduced yield.

[0006] To achieve the above object, the present invention adopts the following technical solutions:

[0007] Automatic purification mechanism, including:

[0008] The outer shell has a material distribution cavity inside, and the outer shell is provided with a feed port, a first material discharge port and a second material discharge port connected to the material distribution cavity, wherein the feed port is higher than the first material discharge port and higher than the second material discharge port;

[0009] A first slideway, the first slideway is arranged in the material distribution cavity, the first slideway is inclined downward, and its upper end is connected with the feed port, and its lower end is connected with the first discharge port, and a leakage hole is arranged at the bottom of the first slideway;

[0010] A second slideway is provided in the material distribution cavity and is located below the first slideway to receive impurities dropped from the leakage hole. The second slideway is inclined downward, and a lower end thereof is connected to the second discharge port;

[0011] A lifting component is arranged in the material distribution chamber, the lifting inlet of the lifting component is located above the first discharge port and is connected with the upper end of the first slide, the discharge port of the lifting component is connected with the lower end of the first slide, and the lifting component can draw the material sliding down from the lower end of the first slide to the upper end of the first slide.

[0012] As an optional technical solution for an automatic purification mechanism, the lifting assembly includes a lifting cylinder and a lifting member. The lifting cylinder has a lifting channel inside. The side wall at the lower end of the lifting cylinder is provided with a lifting inlet connected to the lifting channel. The upper end opening of the lifting cylinder is connected to the upper end of the first slide. The lifting member is used to continuously lift the material flowing into the lifting channel from the lifting inlet to the upper end and then flow into the first slide again; the lower end of the lifting member is lower than the lifting inlet of the lifting cylinder.

[0013] As an optional technical solution for an automatic purification mechanism, the lifting member includes a lifting rod and a spiral sheet. The lifting rod extends in a vertical direction and can rotate around its own axis. The lifting rod is arranged in a lifting channel, and the spiral sheet is arranged around the outer circumference of the lifting rod, and the lower end of the spiral sheet is lower than the lifting inlet.

[0014] As an optional technical solution for an automatic purification mechanism, the first slide is spiral and is arranged around the outer circumference of the lifting cylinder; the second slide is spiral and is arranged around the outer circumference of the lifting cylinder, the material distribution chamber is a cylindrical structure, and the second discharge port is located outside the first discharge port.

[0015] As an optional technical solution for an automatic purification mechanism, the automatic purification mechanism includes a spiral side plate, a first spiral bottom plate, and a second spiral bottom plate. The first spiral bottom plate and the second spiral bottom plate are both arranged around the outer circumference of the lifting cylinder, and the first spiral bottom plate is located on the upper side of the second spiral bottom plate. The spiral side plates are arranged around the outer circumference of the first spiral bottom plate and the second spiral bottom plate. The first spiral bottom plate, the spiral side plate and the outer side wall of the lifting cylinder form a first slideway; the first spiral bottom plate, the second spiral bottom plate, the spiral side plate and the outer side wall of the lifting cylinder form a second slideway, and a leakage hole is opened in the first spiral bottom plate.

[0016] As an optional technical solution for an automatic purification mechanism, the automatic purification mechanism also includes a side baffle; the side baffle is perpendicular to the second spiral bottom plate and is arranged at the lower end of the second spiral bottom plate, one end of the side baffle is connected to the lifting cylinder, and the other end extends to directly above the second discharge port.

[0017] As an optional technical solution of the automatic purification mechanism, the spiral side plate is detachably connected to the first spiral bottom plate; and / or,

[0018] The spiral side plate is fixedly connected to the second spiral bottom plate.

[0019] As an optional technical solution for an automatic purification mechanism, the automatic purification mechanism also includes a connecting piece, which is strip-shaped and extends in a vertical direction, and is connected to the outer side of the spiral side plate.

[0020] As an optional technical solution of an automatic purification mechanism, the automatic purification mechanism also includes a vibration driving member, which is used to drive the first spiral bottom plate, the second spiral bottom plate and the spiral side plate to vibrate synchronously in the vertical direction.

[0021] As an optional technical solution for an automatic purification mechanism, a vibration driving member is arranged at the bottom, and the output end of the vibration driving member can move back and forth in the vertical direction. The second spiral bottom plate is connected to the output end of the vibration driving member and can move synchronously therewith. The first spiral bottom plate and the spiral side plate are fixedly connected to the second spiral bottom plate and can both move synchronously therewith.

[0022] As an optional technical solution for an automatic purification mechanism, the outer shell includes a peripheral shell, a bottom shell and a top shell; the bottom shell is cylindrical, and the bottom shell and the top shell are respectively arranged at the upper and lower ends of the peripheral shell, and enclose a feed cavity, the first discharge port and the second discharge port are both arranged in the bottom shell, and the feed port is arranged in the top shell.

[0023] As an optional technical solution for an automatic purification mechanism, the bottom shell is provided with a recessed portion, the recessed portion is funnel-shaped, and the first discharge port is provided at the bottom of the recessed portion.

[0024] As an optional technical solution for an automatic purification mechanism, the shell also includes a collecting piece, which is in the shape of a ring tube and is arranged at the bottom shell and around the outer periphery of the first discharge port.

[0025] As an optional technical solution for an automatic purification mechanism, the bottom shell has an annular groove, which is arranged around the outer periphery of the recessed portion, and the bottom of the annular groove is inclined downward from the inside to the outside, and the second discharge port is arranged at the bottom of the annular groove.

[0026] As an optional technical solution of an automatic purification mechanism, the automatic purification mechanism also includes a heating element, which is embedded in the side wall surrounding the first slide and is used to heat the material on the first slide.

[0027] A purification device includes the automatic purification mechanism of any of the above-mentioned technical solutions, and also includes a material storage piece, a material receiving piece, a first fan and a vacuum hopper, the feed inlet of the vacuum hopper is connected to the outlet of the material storage piece for storing materials, the discharge port of the vacuum hopper is connected to the feed inlet of the automatic purification mechanism, the feed inlet of the material receiving piece is connected to the first discharge port of the automatic purification mechanism; the air outlet of the vacuum hopper is connected to the air inlet of the first fan; the air outlet of the material receiving piece is connected to the air inlet of the first fan.

[0028] As an optional technical solution for a purification device, the purification device further includes an air cooling component, which is used to reduce the internal air temperature of the material distribution chamber.

[0029] A material purification method, applied to a purification device of any of the above technical solutions, comprises the following steps:

[0030] S100, pumping materials into a vacuum hopper;

[0031] S200, the material slides downward through the first slide, and impurities fall into the second slide during the sliding process, and the impurities flow out through the second discharge port;

[0032] S300, judging whether the separation of materials and impurities is qualified, if yes, proceed to step S500, otherwise proceed to step S400;

[0033] S400, the lifting assembly lifts the material to the upper end of the first slideway again, slides downward again, and returns to S300 again;

[0034] S500, the lifting component stops moving, and the material flows out from the first discharge port after impurities are removed.

[0035] The beneficial effects of the present invention are:

[0036] The present invention provides an automatic purification mechanism, a purification device and a material purification method. The automatic purification mechanism comprises a first slide and a second slide. The material enters the first slide from the feed port of the shell, so that in the process of sliding downward, impurities attached to the material fall from the leakage hole to the second slide. After the material slides to the lower end of the first slide, it can be lifted to the upper end of the first slide again by a lifting component and slides a second time to fully separate the impurities attached to the outside of the material, thereby ensuring the cleanliness of the material, thereby preventing the impurities from being attached to the screw and the side wall of the barrel of the injection molding machine and carbonized into black spots or molten plastic of different colors, thereby improving the appearance yield rate of the product surface. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 It is a structural schematic diagram of the automatic purification mechanism in the embodiment of the present invention from a first viewing angle;

[0038] Figure 2 It is a structural schematic diagram of the automatic purification mechanism in the embodiment of the present invention from a second viewing angle;

[0039] Figure 3 for Figure 2 The cross-section along the AA direction;

[0040] Figure 4 for Figure 2 The cross-section along the BB direction;

[0041] Figure 5 for Figure 4 The enlarged view of J in the middle;

[0042] Figure 6 for Figure 2 The cross-section along the CC direction in the middle shows the addition of a lifting drive component;

[0043] Figure 7 It is a structural schematic diagram of the automatic purification mechanism in the embodiment of the present invention from a third viewing angle, with the surrounding side shell hidden;

[0044] Figure 8 Schematic diagram of the structure of the purification device in the embodiment of the present invention.

[0045] In the figure:

[0046] 100, housing; 110, circumferential housing; 120, bottom housing; 121, first discharge port; 122, second discharge port; 123, recessed portion; 124, collecting member; 125, annular groove; 126, first discharge pipe; 127, second discharge pipe; 130, top housing; 131, feed port; 132, feed pipe; 140, material distribution chamber;

[0047] 210, first slideway; 220, second slideway; 230, spiral side plate; 240, first spiral bottom plate; 241, leakage hole; 250, second spiral bottom plate; 251, side baffle; 260, connecting piece;

[0048] 300, lifting assembly; 310, lifting cylinder; 311, lifting channel; 312, lifting inlet; 320, lifting member; 321, lifting rod; 322, spiral sheet; 330, lifting drive member;

[0049] 400, vibration drive element;

[0050] 500, automatic purification mechanism; 510, material storage component; 520, material receiving component; 530, first fan; 540, vacuum hopper; 550, air cooling component; 551, second fan; 552, condenser; 553, drying filter. DETAILED DESCRIPTION

[0051] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0052] In the description of the present invention, it should be noted that the orientations or positional relationships indicated by the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. Among them, the terms "first position" and "second position" are two different positions, and the first feature "above", "above" and "above" the second feature include the first feature being directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. The first feature "below", "below" and "below" the second feature include the first feature being directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0053] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0054] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0055] like Figures 1 to 7As shown, the present embodiment provides an automatic purification mechanism for purifying granular plastic particles (referred to as materials) to remove tiny granular impurities such as debris on the surface thereof, wherein the outer diameter of the impurities is much smaller than the outer diameter of the materials. The automatic purification mechanism includes a housing 100, a first slide 210, a second slide 220 and a lifting assembly 300. Among them, the housing 100 has a material distribution chamber 140 inside, and the housing 100 is provided with a feed port 131, a first discharge port 121 and a second discharge port 122 connected to the material distribution chamber 140, the feed port 131 is higher than the first discharge port 121, and higher than the second discharge port 122; the first slide 210 is arranged in the material distribution chamber 140, the first slide 210 is inclined downward, and its upper end is connected to the feed port 131, and the lower end is connected to the first discharge port 121, and the bottom of the first slide 210 is provided with a leakage hole 241; the second slide 220 is arranged in the material distribution chamber 140, and The second slideway 220 is located below the first slideway 210 to receive impurities falling from the leakage hole 241. The second slideway 220 is tilted downward, and its lower end is connected to the second discharge port 122. The lifting assembly 300 is arranged in the material distribution cavity 140. The lifting inlet 312 of the lifting assembly 300 is located above the first discharge port 121 and is connected to the upper end of the first slideway 210. The discharge port of the lifting assembly 300 is connected to the lower end of the first slideway 210. The lifting assembly 300 can draw the material sliding down from the lower end of the first slideway 210 to the upper end of the first slideway 210. It should be noted that the diameter of the leakage hole 241 is larger than the outer diameter of the impurities and smaller than the outer diameter of the material.

[0056] By means of the upper and lower interval arrangement of the first slide 210 and the second slide 220 in the above-mentioned automatic purification mechanism, the material enters the first slide 210 from the feed port 131 of the shell 100, so that in the process of sliding downward, the impurities attached to the material fall from the leakage hole 241 to the second slide 220. When the material slides to the lower end of the first slide 210, it can be lifted to the upper end of the first slide 210 again by the lifting component 300 for a second slide to fully separate the impurities attached to the outside of the material, ensure the cleanliness of the material, thereby preventing impurities from adhering to the screw and the side wall of the barrel of the injection molding machine and carbonizing into black spots or different colors of molten plastic, thereby improving the appearance yield of the product surface.

[0057] Regarding the structure of the lifting assembly 300, in some embodiments, the lifting assembly 300 includes a lifting cylinder 310 and a lifting member 320. The lifting cylinder 310 has a lifting channel 311 inside. The side wall of the lower end of the lifting cylinder 310 is provided with a lifting inlet 312 connected to the lifting channel 311. The upper end opening of the lifting cylinder 310 forms its discharge port and is connected to the upper end of the first slide 210. The lifting inlet 312 is connected to the lower end of the first slide 210. The lifting member 320 is used to continuously lift the material flowing into the lifting channel 311 from the lifting inlet 312 to the upper end opening and flow into the first slide 210 again; the lower end of the lifting member 320 is lower than the lifting inlet 312 of the lifting cylinder 310. The above arrangement makes the lifting path of the material shortest, helps to improve the lifting efficiency of the material, and can avoid the interference of the material with the material sliding downward during the lifting process. In this embodiment, the lifting channel 311 is located above the first discharge port 121, that is, the lower end opening of the lifting cylinder 310 is connected to the first discharge port 121.

[0058] Specifically, the lifting member 320 includes a lifting rod 321 and a spiral piece 322. The lifting rod 321 extends in the vertical direction and can rotate around its own axis. The lifting rod 321 is arranged in the lifting channel 311, and the spiral piece 322 is arranged around the outer periphery of the lifting rod 321. The lower end of the spiral piece 322 is lower than the lifting inlet 312. The spiral piece 322 can upload the internal material while following the rotation of the lifting rod 321, and the transmission process is uninterrupted. Among them, the outer edge of the spiral piece 322 and the inner side wall of the lifting channel 311 are slidably frictionally matched. In other embodiments, the lifting member 320 can be a conveyor belt.

[0059] To drive the rotation of the lifting rod 321, in some embodiments, the Figure 6 As shown, the lifting assembly 300 also includes a lifting drive 330, which can be arranged in the housing 100, and its output end is connected to the lifting rod 321. In one embodiment of the present embodiment, the lifting drive 330 is a servo motor, which is arranged in the material distribution chamber 140 and directly connected to the lifting rod 321. In another embodiment of the present embodiment, the lifting drive 330 is a servo motor, and the lifting assembly 300 also includes two magnetic parts, the lifting drive 330 is arranged outside the housing 100, and the output end is connected to one of the magnetic parts, and the other magnetic part is connected to the lifting rod 321. The two magnetic parts can transmit power through magnetic force, so that the lifting rod 321 can rotate synchronously with the output end of the lifting drive 330. With the arrangement of the magnetic part, it is also helpful to ensure the neatness and closedness of the internal space of the material distribution chamber 140, and the lifting drive 330 outside is more convenient for assembly and maintenance, and the lifting drive 330 is also prevented from being contaminated by impurities, ensuring the service life.

[0060] In some embodiments, the first slideway 210 is spiral and wound around the outer circumference of the lifting cylinder 310; the second slideway 220 is spiral and wound around the outer circumference of the lifting cylinder 310, the material distribution cavity 140 is a cylindrical structure, and the second discharge port 122 is located outside the first discharge port 121. The above arrangement helps to extend the rolling path of the material and increase the probability of impurities attached to the material falling off; at the same time, the bearing area is increased and the material separation efficiency is improved.

[0061] The automatic purification mechanism includes a spiral side plate 230, a first spiral bottom plate 240, and a second spiral bottom plate 250. The first spiral bottom plate 240 and the second spiral bottom plate 250 are both arranged around the outer periphery of the lifting cylinder 310, and the first spiral bottom plate 240 is located on the upper side of the second spiral bottom plate 250. The spiral side plate 230 is arranged around the outer periphery of the first spiral bottom plate 240 and the second spiral bottom plate 250. The first spiral bottom plate 240, the spiral side plate 230 and the outer side wall of the lifting cylinder 310 form a first slide 210; the first spiral bottom plate 240, the second spiral bottom plate 250, the spiral side plate 230 and the outer side wall of the lifting cylinder 310 form a second slide 220, and a leakage hole 241 is opened in the first spiral bottom plate 240. The above arrangement enables the upper side of the first spiral bottom plate 240 to form the sliding surface of the first slideway 210, and the lower side to form the second slideway 220, so as to prevent impurities from flying during the sliding process; at the same time, the outer side wall of the lifting cylinder 310 is used to regulate the sliding path of materials and impurities, and the inner side wall is used to constrain the lifted materials. For easy installation, the first spiral bottom plate 240 and the second spiral bottom plate 250 are arranged in parallel.

[0062] In order to smoothly introduce the impurities in the second slideway 220 into the second discharge port 122, in some embodiments, combined with Figure 5 As shown, the automatic purification mechanism also includes a side baffle 251; the side baffle 251 is perpendicular to the second spiral bottom plate 250 and is arranged at the lower end of the second spiral bottom plate 250, one end of the side baffle 251 is connected to the lifting cylinder 310, and the other end extends to directly above the second discharge port 122.

[0063] In order to facilitate maintenance and replacement of the first spiral bottom plate 240, the spiral side plate 230 is detachably connected to the first spiral bottom plate 240. The first spiral bottom plate 240 has a variety of models, and the spiral angles of different models of the first spiral bottom plates 240 are different to meet different material impurity removal requirements. The side wall of the spiral side plate 230 is protruding inwardly with a support portion, and the first spiral bottom plate 240 is placed on the support portion. In other embodiments, the first spiral bottom plate 240 and the spiral side plate 230 are screwed. The spiral side plate 230 is fixedly connected to the second spiral bottom plate 250.

[0064] The automatic purification mechanism also includes a connecting member 260, which is strip-shaped and extends in the vertical direction. The connecting member 260 is connected to the outer side of the spiral side plate 230, so that the spiral side plate 230, the first spiral bottom plate 240, and the second spiral bottom plate 250 are connected as a whole, thereby improving the stability of the physical structure surrounding the first slideway 210 and the second slideway 220. Further, the automatic purification mechanism includes a plurality of connecting members 260, and the plurality of connecting members 260 are evenly spaced around the central axis of the spiral side plate 230.

[0065] To facilitate production and assembly, in some embodiments, the housing 100 includes a peripheral shell 110, a bottom shell 120, and a top shell 130; the bottom shell 120 is cylindrical, and the bottom shell 120 and the top shell 130 are respectively arranged at the upper and lower ends of the peripheral shell 110, and surround a feed cavity 140, the bottom shell 120 is provided with a first discharge port 121 and a second discharge port 122, and the top shell 130 is provided with a feed port 131. Among them, the first discharge pipe 126 and the second discharge pipe 127 are both arranged at the bottom shell 120, and are correspondingly connected to the first discharge port 121 and the second discharge port 122. The feed pipe 132 is arranged at the top shell 130, and is connected to the feed port 131.

[0066] After the material flows out from the first slideway 210, in order to ensure that it can smoothly enter the first discharge port 121, in some embodiments, the bottom shell 120 is provided with a recessed portion 123, the recessed portion 123 is funnel-shaped, and the first discharge port 121 is arranged at the bottom of the recessed portion 123. The recessed portion 123 plays a convergence role, which is conducive to the material to enter the second discharge port 122 more easily, and reduce the accumulation of materials in the material distribution cavity 140. Among them, the lower edge of the lifting inlet 312 is flush with the bottom of the recessed portion 123, and the upper edge of the lifting inlet 312 is higher than the bottom of the recessed portion 123, so that the material can enter the lifting cylinder 310 again.

[0067] Furthermore, the housing 100 further includes a collecting member 124, which is in the shape of a ring tube and is disposed on the bottom housing 120 and is disposed around the outer periphery of the first discharge port 121. The collecting member 124 plays an isolating role, preventing the first discharge port 121 from being connected to the second discharge port 122, preventing the material from rebounding when falling and entering the second discharge port 122, and preventing the impurities from rebounding when falling and entering the first discharge port 121.

[0068] In this embodiment, the lower end of the spiral side plate 230 is retracted inwardly to the inside of the collecting member 124 to guide the material to the first discharge port 121 , so that the material can smoothly enter the recessed portion 123 and finally enter the lifting cylinder 310 .

[0069] In order to improve the convenience of impurities entering the second discharge port 122, the bottom shell 120 has an annular groove 125, which is arranged around the outer periphery of the recessed portion 123, and the bottom of the annular groove 125 is inclined downward from the inside to the outside, and the second discharge port 122 is arranged at the bottom of the annular groove 125. The inclined annular groove 125 is used to guide the impurities outward to avoid entering the first discharge port 121. Furthermore, the bottom of the annular groove 125 is inclined toward the second discharge port 122 as a whole, that is, the bottom of the annular groove 125 is lowest at the second discharge port 122.

[0070] After the material enters the first slideway 210, it will slide or roll, and its position will continue to move downward. In order to avoid the problem of material jamming when the friction force is large, the automatic purification mechanism also includes a vibration drive 400, which is used to drive the first spiral bottom plate 240, the second spiral bottom plate 250 and the spiral side plate 230 to vibrate synchronously in the vertical direction. Vibration can temporarily separate the material from the side wall of the first slideway 210, thereby overcoming the static friction generated between the two, so that the material can slide or roll smoothly downward when it falls again; in addition, the vibration direction is vertical, which is conducive to overcoming gravity and lifting the material; at the same time, the vibration process also helps to separate the impurities attached to the material, thereby improving the purification effect of the material; furthermore, the vibration makes the material fall in a constantly jumping posture, thereby increasing the material descent speed; finally, the first spiral bottom plate 240, the second spiral bottom plate 250 and the spiral side plate 230 vibrate synchronously in the vertical direction to prevent the material from jumping out of the spiral side plate 230. It should be noted that during the vibration process, the lifting cylinder 310 remains stationary to ensure the stability of the internal lifting member 320.

[0071] Exemplarily, the vibration driving member 400 is arranged at the bottom, and the output end of the vibration driving member 400 can reciprocate in the vertical direction, the second spiral bottom plate 250 is connected to the output end of the vibration driving member 400, and can move synchronously therewith, the first spiral bottom plate 240 and the spiral side plate 230 are fixedly connected to the second spiral bottom plate 250, and can move synchronously with the second spiral bottom plate 250. Specifically, the first spiral bottom plate 240 is fixedly connected to the spiral side plate 230, and the spiral side plate 230 is fixedly connected to the second spiral bottom plate 250. Among them, an elastic member can also be arranged between the second spiral bottom plate 250 and the bottom shell 120 to apply an upward elastic force to the second spiral bottom plate 250 to reduce the output power of the vibration driving member 400. In some embodiments, the vibration driving member 400 only drives the first spiral bottom plate 240 to vibrate synchronously in the vertical direction to reduce the energy required for driving and reduce energy consumption.

[0072] In some embodiments, the automatic purification mechanism further includes a heating element (not shown in the figure), which is embedded in the side wall surrounding the first slide 210, and is used to heat the material on the first slide 210. The heating element is embedded in the first spiral bottom plate 240. Compared with gas heating in the prior art, direct contact heating has higher heating efficiency, better stability, and reduced heat loss. The heating element can be a heating wire embedded in the first spiral bottom plate 240.

[0073] like Figures 1 to 8 As shown, this embodiment also provides a purification device, which includes the automatic purification mechanism 500 in any of the above embodiments, and also includes a material storage member 510, a material receiving member 520, a first fan 530 and a vacuum hopper 540, the inlet of the vacuum hopper 540 is connected to the outlet of the material storage member 510 for storing materials, the outlet of the vacuum hopper 540 is connected to the feed inlet 131 of the automatic purification mechanism 500, the inlet of the material receiving member 520 is connected to the first outlet 121 of the automatic purification mechanism 500; the air outlet of the vacuum hopper 540 is connected to the air inlet of the first fan 530; the air outlet of the material receiving member 520 is connected to the air inlet of the first fan 530. With the above structure, the purification device can fully purify the material to avoid the material carrying impurities during injection molding, thereby preventing the impurities from adhering to the screw and the side wall of the barrel of the injection molding machine and carbonizing into black spots or molten plastic of different colors, thereby improving the appearance yield of the product surface.

[0074] In order to control the temperature inside the material distribution chamber 140, the purification device further includes an air cooling component 550, which is used to reduce the internal temperature of the material distribution chamber 140. The setting of the air cooling component 550 can cooperate with the heating element to accurately control the internal temperature of the material distribution chamber 140, ensuring that the temperature of the material is controllable, so as to facilitate separation from impurities.

[0075] The housing 100 is provided with a gas inlet and a gas outlet connected to the material distribution chamber 140, and the air cooling assembly 550 includes a second fan 551 and a condenser 552. The air outlet of the condenser 552 is connected to the inlet of the second fan 551, the outlet of the second fan 551 is connected to the gas inlet, and the gas outlet is connected to the air inlet of the condenser 552. It should be noted that the condenser 552 has a cooling water inlet and a cooling water outlet. The cooling water inlet is used to introduce cooling water, and the cooling water outlet is used for the outflow of cooling water. The cooling water in the condenser 552 is used to cool the gas passing through the condenser 552.

[0076] Furthermore, the air cooling assembly 550 also includes a drying filter 553, which is arranged upstream of the condenser 552 and downstream of the gas outlet, and is connected in series between the condenser 552 and the automatic purification mechanism 500 to remove moisture from the material, improve its dryness, and increase the falling speed. A drying filter 553 is also arranged downstream of the first fan 530.

[0077] This embodiment also provides a material purification method, which is applied to the purification device in any of the above embodiments, comprising the following steps:

[0078] S100 , pumping materials into the vacuum hopper 540 .

[0079] S200, the material slides downward through the first slide 210, and impurities fall into the second slide during the sliding process, and the impurities flow out through the second discharge port 122.

[0080] S300, judging whether the separation of materials and impurities is qualified, if yes, proceed to step S500, otherwise proceed to step S400;

[0081] S400, the lifting assembly 300 lifts the material to the upper end of the first slideway 210 again, slides downward again, and returns to S300 again.

[0082] S500, the lifting component 300 stops moving, and the material flows out from the first discharge port 121 after removing impurities. It should be noted that the method for judging whether the separation of materials and impurities is qualified is well known to those skilled in the art, and is not the focus of this application, so it will not be described in detail here. In some embodiments, the judgment step can be removed, and the separation effect of materials and impurities can be controlled by the working time of the lifting component 300. For example, during the working period of the lifting component 300, the material circulates at least 3 times to achieve a complete separation of materials and impurities.

[0083] With the help of the above method, the material and impurities can be effectively separated, the cleanliness of the material can be improved, and impurities can be avoided from being carried on the material during injection molding, thereby preventing impurities from adhering to the screw and the side wall of the barrel of the injection molding machine and carbonizing into black spots or different colors of molten plastic, thereby improving the appearance yield of the product surface.

[0084] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the embodiments here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. Automatic purification mechanism, characterized in that: include: A housing (100), wherein a material distribution cavity (140) is provided inside the housing (100), and the housing (100) is provided with a material feed port (131) communicating with the material distribution cavity (140), a first material discharge port (121), and a second material discharge port (122), wherein the material feed port (131) is higher than the first material discharge port (121), and higher than the second material discharge port (122); A first slideway (210), the first slideway (210) being arranged in the material distribution chamber (140), the first slideway (210) being inclined downward, and the upper end thereof being communicated with the material feed port (131), and the lower end thereof being communicated with the first material discharge port (121), and a material leakage hole (241) being arranged at the bottom of the first slideway (210); A second slideway (220), the second slideway (220) being arranged in the material distribution cavity (140) and located below the first slideway (210) to receive impurities dropped from the leakage hole (241), the second slideway (220) being inclined downward, and the lower end thereof being in communication with the second discharge port (122); A lifting component (300), wherein the lifting component (300) is arranged in the material distribution chamber (140), the material inlet of the lifting component (300) is located above the first material outlet (121) and is connected to the lower end of the first slide (210), the material outlet of the lifting component (300) is connected to the upper end of the first slide (210), and the lifting component (300) can draw the material sliding down from the lower end of the first slide (210) to the upper end of the first slide (210).

2. The automatic cleaning mechanism according to claim 1, characterized in that: The lifting assembly (300) comprises a lifting cylinder (310) and a lifting member (320), wherein the lifting cylinder (310) has a lifting channel (311) inside, and a lifting inlet (312) connected to the lifting channel (311) is provided on the side wall at the lower end of the lifting cylinder (310), and the upper end opening of the lifting cylinder (310) is connected to the upper end of the first slideway (210), and the lifting member (320) is used to continuously lift the material flowing into the lifting channel (311) from the lifting inlet (312) to the upper end and then flow into the first slideway (210) again; the lower end of the lifting member (320) is lower than the lifting inlet (312) of the lifting cylinder (310).

3. The automatic cleaning mechanism according to claim 2, characterized in that: The lifting member (320) includes a lifting rod (321) and a spiral piece (322). The lifting rod (321) extends in a vertical direction and can rotate around its own axis. The lifting rod (321) is arranged in the lifting channel (311). The spiral piece (322) is arranged around the outer circumference of the lifting rod (321), and the lower end of the spiral piece (322) is lower than the lifting inlet (312).

4. The automatic cleaning mechanism according to claim 2, characterized in that: The first slideway (210) is spiral and is arranged around the outer circumference of the lifting cylinder (310); the second slideway (220) is spiral and is arranged around the outer circumference of the lifting cylinder (310); the material distribution chamber (140) is a cylindrical structure, and the second discharge port (122) is located outside the first discharge port (121).

5. The automatic cleaning mechanism according to claim 4, characterized in that: The automatic purification mechanism comprises a spiral side plate (230), a first spiral bottom plate (240), and a second spiral bottom plate (250); the first spiral bottom plate (240) and the second spiral bottom plate (250) are both arranged around the outer circumference of the lifting cylinder (310), and the first spiral bottom plate (240) is located on the upper side of the second spiral bottom plate (250); the spiral side plate (230) is arranged around the outer circumference of the first spiral bottom plate (240) and the second spiral bottom plate (250); the first spiral bottom plate (240), the spiral side plate (230) and the outer side wall of the lifting cylinder (310) form the first slideway (210); the first spiral bottom plate (240), the second spiral bottom plate (250), the spiral side plate (230) and the outer side wall of the lifting cylinder (310) form the second slideway (220); and the leakage hole (241) is opened in the first spiral bottom plate (240).

6. The automatic cleaning mechanism according to claim 5, characterized in that: The automatic purification mechanism also includes a side baffle (251); the side baffle (251) is perpendicular to the second spiral bottom plate (250) and is arranged at the lower end of the second spiral bottom plate (250); one end of the side baffle (251) is connected to the lifting cylinder (310), and the other end extends to directly above the second discharge port (122).

7. The automatic cleaning mechanism according to claim 5, characterized in that: The spiral side plate (230) is detachably connected to the first spiral bottom plate (240); and / or, The spiral side plate (230) is fixedly connected to the second spiral bottom plate (250).

8. The automatic cleaning mechanism according to claim 5, characterized in that: The automatic purification mechanism further comprises a connecting member (260), the connecting member (260) is strip-shaped and extends in a vertical direction, and the connecting member (260) is connected to the outer side of the spiral side plate (230).

9. The automatic cleaning mechanism according to claim 5, characterized in that: The automatic purification mechanism further comprises a vibration driving member (400), wherein the vibration driving member (400) is used to drive the first spiral bottom plate (240), the second spiral bottom plate (250) and the spiral side plate (230) to vibrate synchronously in the vertical direction.

10. The automatic cleaning mechanism according to claim 9, characterized in that: The vibration driving member (400) is arranged at the bottom, and the output end of the vibration driving member (400) can reciprocate in the vertical direction. The second spiral bottom plate (250) is connected to the output end of the vibration driving member (400) and can move synchronously therewith. The first spiral bottom plate (240) and the spiral side plate (230) are fixedly connected to the second spiral bottom plate (250) and can both move synchronously therewith.

11. The automatic cleaning mechanism according to claim 1, characterized in that: The outer shell (100) comprises a peripheral shell (110), a bottom shell (120) and a top shell (130); the bottom shell (120) is cylindrical, the bottom shell (120) and the top shell (130) are respectively arranged at the upper and lower ends of the peripheral shell (110), and surround the material distribution cavity (140); the first discharge port (121) and the second discharge port (122) are both arranged at the bottom shell (120), and the feed port (131) is arranged at the top shell (130).

12. The automatic cleaning mechanism according to claim 11, characterized in that: The bottom shell (120) is provided with a recessed portion (123), the recessed portion (123) is funnel-shaped, and the first discharge port (121) is provided at the bottom of the recessed portion (123).

13. The automatic cleaning mechanism according to claim 11, characterized in that: The housing (100) further comprises a collecting piece (124) which is in the shape of an annular cylinder. The collecting piece (124) is arranged on the bottom housing (120) and surrounds the outer periphery of the first discharge port (121).

14. The automatic cleaning mechanism according to claim 12, characterized in that: The bottom shell (120) has an annular groove (125), the annular groove (125) is arranged around the outer periphery of the recessed portion (123), and the bottom of the annular groove (125) is inclined downward from the inside to the outside, and the second discharge port (122) is arranged at the bottom of the annular groove (125).

15. The automatic cleaning mechanism according to any one of claims 1 to 14, characterized in that: The automatic purification mechanism also includes a heating element, which is embedded in the inside of the side wall surrounding the first slideway (210) and is used to heat the material on the first slideway (210).

16. A purification device, characterized in that It comprises the automatic purification mechanism as described in any one of claims 1 to 15, and also comprises a material storage piece (510), a material receiving piece (520), a first fan (530) and a vacuum hopper (540), wherein the feed port of the vacuum hopper (540) is connected to the outlet of the material storage piece (510) for storing materials, the discharge port of the vacuum hopper (540) is connected to the feed port (131) of the automatic purification mechanism, the feed port of the material receiving piece (520) is connected to the first discharge port (121) of the automatic purification mechanism; the air outlet of the vacuum hopper (540) is connected to the air inlet of the first fan (530); the air outlet of the material receiving piece (520) is connected to the air inlet of the first fan (530).

17. The purification device according to claim 16, characterized in that: The purification device further comprises an air cooling component (550), wherein the air cooling component (550) is used to reduce the internal air temperature of the material distribution chamber (140).

18. A material purification method, applied to the purification device according to claim 16 or 17, characterized in that: The following steps are involved: S100, pumping materials into a vacuum hopper (540); S200, the material slides downward through the first slideway (210), and impurities fall into the second slideway during the sliding process, and the impurities flow out through the second discharge port (122); S300, judging whether the separation of materials and impurities is qualified, if yes, proceed to step S500, otherwise proceed to step S400; S400, the lifting assembly (300) lifts the material to the upper end of the first slideway (210) again, slides downward again, and returns to S300 again; S500: The lifting assembly (300) stops moving, and the material flows out from the first discharge port (121) after impurities are removed.

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