Anti-blocking device for recycling waste of injection molding machine

Abstract

The invention discloses an anti-blocking device for waste recovery of an injection molding machine, which comprises a recovery barrel, the inner wall of the recovery barrel is made of a material with a high friction coefficient, a rotatable rotating sleeve is mounted in the center of the interior of the recovery barrel, a spiral blade is fixedly mounted on the outer wall of the rotating sleeve, and the rotating direction of the rotating sleeve is opposite to the blanking direction. The spiral blade is divided into two parts, the side close to the rotating sleeve is a first conveying part, and the side away from the rotating sleeve is a second conveying part. After treatment through the separation assembly, plastic particles and fibers fall to a spiral blade, a rotating sleeve is driven to drive the spiral blade to rotate, and the plastic particles downwards roll to the bottom of a recycling barrel along a first conveying part; the fibers move to the inner wall of the barrel under the action of centrifugal force, and due to the fact that the friction coefficient of the material of the inner wall is high, the fibers adhere to the material and stably move upwards under the assistance of the air inlet assembly, the fibers are separated from plastic particles, and the probability of defects such as material shortage and flow marks of products is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of waste recycling, and particularly to a clogging prevention device for waste recycling of an injection molding machine. Background Art

[0002] Plastic waste recycling has important resource, environmental and economic significance. Firstly, it can effectively reduce the dependence on virgin plastics and reduce the consumption of petroleum resources, thus alleviating the problem of resource shortage. Secondly, recycling plastics can reduce landfill and incineration of garbage, reduce pollution to soil, water sources and the atmosphere, and reduce greenhouse gas emissions, contributing to environmental protection. From an economic perspective, recycling plastics can reduce production costs, create market value for recycled materials, and enhance the competitiveness of enterprises.

[0003] Among them, the waste recycling of injection molding machines is of particular significance. It can reuse the waste generated during the production process (such as sprue materials, flash, etc.), reduce waste of raw materials, lower production costs, and at the same time improve production efficiency and resource utilization rate, providing important support for the sustainable development of the injection molding industry.

[0004] However, when injection molded products use reinforced plastics such as glass fiber and carbon fiber, the waste generated during the production process (such as scraps, defective products, etc.) will contain fiber components. For example, automotive parts and aerospace components often use such materials, and their injection molding waste contains fiber. When recycling the waste of injection molding machines, the fibers exposed after crushing will not only increase the difficulty and frequency of filtration, may reduce the filtration efficiency, and affect the smoothness of the recycling process, but also the excessive fibers will reduce the melt fluidity, affect the injection molding effect, and reduce the mechanical properties of the products. Therefore, it is particularly important to separate the fibers in the waste. Summary of the Invention

[0005] The purpose of the present invention is to provide a clogging prevention device for waste recycling of an injection molding machine to solve at least one technical problem existing in the above-mentioned prior art.

[0006] To achieve the above purpose, the present invention provides the following technical solution: A clogging prevention device for waste recycling of an injection molding machine, including a recycling barrel, the inner wall of the recycling barrel is made of a material with a high coefficient of friction, a rotatable rotating sleeve is installed at the center inside the recycling barrel, a spiral blade is fixedly installed on the outer wall of the rotating sleeve, and the rotation direction of the rotating sleeve is opposite to the material falling direction. The spiral blade is divided into two parts: the first conveying part is close to the rotating sleeve side, and the second conveying part is far from the rotating sleeve side;

[0007] It further includes an air inlet assembly that can blow the fibers on the surface of the spiral blade towards the inner wall of the recycling barrel;

[0008] It further includes a separation component installed at the top of the recycling bin. The separation component can separate the polymer of plastic particles and fibers, and make the separated fibers and plastic particles fall onto the surface of the spiral blades.

[0009] Preferably, the separation component includes a mounting frame installed at the top of the recycling bin. A filter screen is fixedly installed on the inner wall of the mounting frame. Two symmetrical mounting vertical plates are fixedly installed on the inner wall of the mounting frame. Rotatable rotating shafts are installed on the outer walls of the two mounting vertical plates. Eccentric disks are fixedly installed on the outer walls of the two rotating shafts. Limiting plates are rotatably installed on the outer walls of the two eccentric disks. A separation roller is rotatably connected between the two limiting plates. Through straight grooves are opened on the outer walls of the two limiting plates, and sliders that can slide in the straight grooves are fixedly installed on the outer walls of the two mounting vertical plates.

[0010] Preferably, an annular groove for inserting the mounting frame is opened at the top of the recycling bin. A first spring is installed between the bottom of the annular groove and the bottom of the mounting frame. A protrusion is fixedly installed on the outer wall of the mounting frame. A clamping groove for embedding the protrusion is opened on the inner wall of the annular groove of the recycling bin, and the elastic force of the first spring on the mounting frame can overcome the frictional force between the protrusion and the clamping groove.

[0011] Preferably, the air inlet component includes a mounting cavity opened at the bottom of the recycling bin. A plurality of arc-shaped protrusions are provided on the inner wall of the mounting cavity. The plurality of arc-shaped protrusions are connected end to end, and the radius of each arc-shaped protrusion gradually decreases. A rotatable piston body is installed at the bottom of the mounting cavity. Two slidable piston plates are installed on the inner wall of the piston body. Piston rods are fixedly installed on the outer walls of the two piston plates. A second spring is connected between the two piston rods, and the two piston rods penetrate the outer wall of the piston body and can contact and abut against the arc-shaped protrusions;

[0012] A driving shaft is coaxially and fixedly installed on the inner wall of the rotating sleeve. The driving shaft penetrates the inner bottom of the recycling bin and is fixedly connected to the piston body. A first air inlet hole communicating with the outside is opened on the outer wall of the piston body. An air outlet channel for communicating the inside of the recycling bin with the inside of the piston body is installed inside the driving shaft, and the air outlet hole of the air outlet channel is opened at a position closely attached to the upper leaf surface of the spiral blade. Check valves are installed inside both the air outlet channel and the first air inlet hole.

[0013] Preferably, a first discharge port and a second discharge port are opened on the outer wall of the recycling bin, and the first discharge port and the second discharge port are respectively located above and below the recycling bin. A first scraper and a second scraper are fixedly connected to the outer wall of the rotating sleeve, and the first scraper and the second scraper are respectively fixedly connected to the head end and the tail end of the spiral blade;

[0014] A detachable top cover is further installed at the top of the recycling bin, and a feed port is opened on the outer wall of the top cover.

[0015] Preferably, a spiral collection channel is fixedly installed on the outer wall of the recovery barrel, and the interior of the recovery barrel communicates with the spiral collection channel through a first discharge port.

[0016] Preferably, a through circular hole is formed at the bottom of the recovery barrel, a rotating disk is rotatably installed on the inner wall of the circular hole, and the rotating disk is fixedly connected to a rotating sleeve. The first air inlet hole and the air outlet channel are arranged between the two piston plates. A second air inlet hole communicating with the outside is formed between the two piston plates and the inner wall of the piston body. A second air outlet hole communicating the piston body with the inner bottom of the recovery barrel is arranged inside the rotating disk, and the second air outlet hole is located between the piston plate and the inner wall of the piston body.

[0017] Preferably, the leaf surface of the spiral blade is recessed towards the center, the air outlet holes of the air outlet channel are spirally formed on the outer wall of the air outlet channel, and the air outlet holes of the air outlet channel are all arranged obliquely upwards.

[0018] Preferably, the filter screen is arc-shaped.

[0019] Preferably, it further includes a pre-crushing component and a preliminary filtering component. The pre-crushing component can perform preliminary crushing on the waste material to expose some of the fibers therein, and the preliminary filtering component can separate the exposed fibers.

[0020] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0021] After being processed by the separation component in the present invention, the plastic particles and fibers fall onto the spiral blade. The rotation of the rotating sleeve drives the spiral blade to rotate, and the plastic particles roll down along the first conveying part to the bottom of the recovery barrel; the fibers move towards the inner wall of the barrel under the action of centrifugal force. Due to the high friction coefficient of the inner wall material, the fibers adhere to it and stably move upwards with the assistance of the air inlet component, thereby separating the fibers and the plastic particles. After separating the fibers, the fluidity of the recycled plastic is more uniform, and it can more smoothly fill the mold cavity or pass through the extrusion head during processing such as injection molding and extrusion, reducing the probability of defects such as material shortage and flow marks in the products. Description of the Drawings

[0022] Figure 1 is a three-dimensional view of the present invention;

[0023] Figure 2 is a front sectional view of the present invention;

[0024] Figure 3 is a front sectional view of the present invention with the top cover removed;

[0025] Figure 4 is a sectional three-dimensional schematic diagram of the first scraper of the present invention;

[0026] Figure 5 Schematic top view cross-sectional view of the piston body in the present invention;

[0027] Figure 6 Schematic cross-sectional view of the second scraper in the present invention;

[0028] Figure 7 In the present invention Figure 3 Enlarged view of location A;

[0029] Figure 8 Schematic three-dimensional view of the limit plate in the present invention;

[0030] Figure 9 Flow chart of the present invention.

[0031] In the figure: 1, recovery barrel; 2, mounting frame; 3, separation roller; 4, filter screen; 5, drive shaft; 6, rotating sleeve; 7, spiral blade; 8, air outlet channel; 9, spiral collection channel; 10, mounting cavity; 11, mounting vertical plate; 12, rotating disk; 13, second air outlet; 14, arc-shaped protrusion; 15, piston body; 16, piston plate; 17, piston rod; 18, second air inlet; 19, first air inlet; 20, first scraper; 21, first discharge port; 22, second discharge port; 23, protrusion; 24, first spring; 25, limit plate; 26, eccentric disk; 27, rotating shaft; 28, second scraper; 29, top cover; 30, card slot; 31, second spring. Detailed implementation manners

[0032] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0033] Please refer to Figures 1 to 9 , the present invention provides a technical solution: an anti-blocking device for waste recycling of an injection molding machine, including a recovery barrel 1, characterized in that: the inner wall of the recovery barrel 1 is made of a material with a high coefficient of friction, and a rotatable rotating sleeve 6 is installed at the center inside the recovery barrel 1. A spiral blade 7 is fixedly installed on the outer wall of the rotating sleeve 6, and the rotation direction of the rotating sleeve 6 is opposite to the material falling direction. The spiral blade 7 is divided into two parts: the first conveying part is on the side close to the rotating sleeve 6, and the second conveying part is on the side far from the rotating sleeve 6;

[0034] It further includes an air intake component that can blow the fibers on the surface of the spiral blade 7 towards the inner wall of the recovery barrel 1. The air intake component and all the above structures together form a conveying component;

[0035] It also includes a separation component installed on the top of the recycling bin 1. The separation component can separate the polymer of plastic particles and fibers and make the separated fibers and plastic particles fall onto the surface of the spiral blade 7.

[0036] See Figure 1 and Figure 2 , put the plastic particles and plastic particle - fiber polymers (both hereinafter referred to as polymers for short) preliminarily separated by external equipment into the interior of the recycling bin 1. The plastic particles and polymers will first fall into the separation component at the top of the recycling bin 1. The separation component separates the polymers into independent plastic particles and fibers, and makes the further crushed plastic particles and fibers fall onto the surface of the spiral blade 7. Drive the rotating sleeve 6 to rotate through an external drive mechanism, thereby driving the spiral blade 7 to rotate. The plastic particles falling onto the spiral blade 7 will gradually roll downward along the first conveying part of the spiral blade 7, and thus fall to the inner bottom of the recycling bin 1. The fibers falling onto the spiral blade 7 will gradually move towards the inner wall of the recycling bin 1 under the action of the centrifugal force of the rotation of the spiral blade 7. The inner wall of the recycling bin 1 is made of a material with a high coefficient of friction (such as polyurethane, which has a high cost performance and good wear resistance and is suitable for most fiber sorting requirements). The fibers in contact with the inner wall of the recycling bin 1 will adhere to the inner surface of the recycling bin 1, and under the action of the air intake component, the fibers can move more stably towards the inner wall of the recycling bin 1. Because the rotation direction of the spiral blade 7 is opposite to the material falling direction, as the first conveying part of the spiral blade 7 rotates, it will drive the fibers adhering to the inner wall of the recycling bin 1 to gradually move upward, thereby separating the fibers from the plastic particles. After separating the fibers, the fluidity of the recycled plastic is more uniform, and it can fill the mold cavity more smoothly or pass through the extrusion head during processing such as injection molding and extrusion, reducing the probability of defects such as material shortage and flow marks in the products.

[0037] It is worth mentioning that the plastic particles are heavier than the fibers. Therefore, when the air intake component blows the fibers towards the inner wall of the recycling bin 1, the plastic particles will not move, and the friction of the plastic particles is small and they will not adhere to the inner wall of the recycling bin 1. And when the spiral blade 7 rotates and drives the fibers on the inner wall of the recycling bin 1 to gradually move upward, it may cause the fibers to separate from the inner wall of the recycling bin 1. Under the action of the air intake component, the fibers can stably contact the inner wall of the recycling bin 1, preventing the fibers from moving downward with the plastic particles after separation, further increasing the efficiency of separation.

[0038] Furthermore, the separation component includes an installation frame 2 installed on the top of the recycling bin 1, a filter screen 4 is fixedly installed on the inner wall of the installation frame 2, two symmetrical installation vertical plates 11 are fixedly installed on the inner wall of the installation frame 2, the outer walls of the two installation vertical plates 11 are both installed with a rotatable rotating shaft 27, the outer walls of the two rotating shafts 27 are both fixedly installed with eccentric disks 26, the outer walls of the two eccentric disks 26 are both rotatably installed with limit plates 25, the two limit plates 25 are rotatably connected with a separation roller 3, the outer walls of the two limit plates 25 are both opened with a straight groove running through them, and the outer walls of the two installation vertical plates 11 are both fixedly installed with a slider that can slide in the straight groove.

[0039] See also Figure 3 as well as Figure 8 When the plastic particles and polymers that have been preliminarily processed on the outside are put into the recycling barrel 1, the two will first fall onto the surface of the filter screen 4, and the motor-driven rotating shaft 27 fixed on the outer wall of the mounting vertical plate 11 will rotate, thereby driving the eccentric disk 26 to rotate, and then the eccentric disk 26 drives the limit plate 25 to swing, so that the separation roller 3 installed between the two limit plates 25 will continuously crush and separate the materials falling onto the surface of the filter screen 4 in the form of filing and twisting. The crushed and separated fibers and plastic particles will pass through the filter screen 4 and fall onto the surface of the spiral blade 7 to complete the above-mentioned separation process. Compared with the hammer crushing method, filing and twisting will be softer and will not further crush the fibers therein, reducing the difficulty of subsequent separation. In addition, the polymer will be crushed by filing and twisting, and the fibers therein will be twisted into strips to ensure their integrity and make them more easily adhere to the inner wall of the recycling barrel 1.

[0040] Furthermore, an annular groove is provided on the top of the recycling bucket 1 for the installation frame 2 to be inserted, and a first spring 24 is installed between the bottom of the annular groove and the bottom of the installation frame 2, a protrusion 23 is fixedly installed on the outer wall of the installation frame 2, and a slot 30 is provided on the inner wall of the annular groove of the recycling bucket 1 for the protrusion 23 to be embedded, and the elastic force of the first spring 24 against the installation frame 2 can overcome the friction between the protrusion 23 and the slot 30.

[0041] See also Figure 7, the bottom of the installation frame 2 is slidably installed in the annular groove on the outer wall of the recycling bin 1, and a first spring 24 is installed between the bottom of the installation frame 2 and the inner top of the annular groove. When the separating roller 3 files and twists the materials on the surface of the filter screen 4, when the separating roller 3 contacts the top of the filter screen 4, it will move the filter screen 4 and the installation frame 2 downward, and the protrusion 23 on the outer wall of the installation frame 2 will be embedded into the card slot 30. When the separating roller 3 gradually disengages from the filter screen 4, the protrusion 23 will disengage from the card slot 30 under the action of the first spring 24, causing the filter screen 4 to bounce upward, preventing the filter holes of the filter screen 4 from being blocked when the separating roller 3 files and twists the materials, and when the filter screen 4 bounces upward after each filing and twisting, the fibers on its surface will bounce up, so that the fibers parallel to the filter screen 4 after filing and twisting can more easily pass through the filter holes.

[0042] Further, the air intake assembly includes an installation cavity 10 opened at the bottom of the recycling bin 1. A plurality of arc-shaped protrusions 14 are provided on the inner wall of the installation cavity 10. The plurality of arc-shaped protrusions 14 are connected end to end, and the radius of each arc-shaped protrusion 14 gradually decreases. A rotatable piston body 15 is installed at the inner bottom of the installation cavity 10. Two slidable piston plates 16 are installed on the inner wall of the piston body 15. The outer walls of the two piston plates 16 are fixedly installed with piston rods 17. A second spring 31 is commonly connected between the two piston rods 17, and both piston rods 17 penetrate the outer wall of the piston body 15 and can contact and abut against the arc-shaped protrusions 14;

[0043] A driving shaft 5 is coaxially and fixedly installed on the inner wall of the rotating sleeve 6. The driving shaft 5 penetrates the inner bottom of the recycling bin 1 and is fixedly connected to the piston body 15. A first air intake hole 19 communicating with the outside is opened on the outer wall of the piston body 15. An air outlet channel 8 capable of communicating the inside of the recycling bin 1 with the inside of the piston body 15 is installed inside the driving shaft 5, and the air outlet hole of the air outlet channel 8 is opened at a position closely attached to the upper leaf surface of the spiral blade 7. Check valves are installed inside both the air outlet channel 8 and the first air intake hole 19.

[0044] See Figure 2 and Figure 5 , the piston body 15 is driven to rotate by a motor fixed to the bottom of the recycling bin 1, thereby driving the driving shaft 5 to rotate, and then driving the rotating sleeve 6 fixedly connected to the driving shaft 5 to rotate. At the same time when the piston body 15 rotates, the piston rod 17 will slide along the outer wall of the arc-shaped protrusion 14, thereby driving the two piston plates 16 to reciprocate continuously, so as to continuously draw the outside air into the piston rod 17 through the first air intake hole 19 and blow it into the inner wall of the recycling bin 1 through the air outlet channel 8. The air outlet hole of the air outlet channel 8 is arranged at a position closely attached to the upper leaf surface of the spiral blade 7, so that the fibers on the surface of the spiral blade 7 can be continuously blown towards the surface of the recycling bin 1, preventing the fibers from flying disorderly in the space between the spiral blade 7 and the inner wall of the recycling bin 1.

[0045] Furthermore, a first discharge port 21 and a second discharge port 22 are provided on the outer wall of the recycling barrel 1, and the first discharge port 21 and the second discharge port 22 are respectively located above and below the recycling barrel 1. A first scraping plate 20 and a second scraping plate 28 are fixedly connected to the outer wall of the rotating sleeve 6, and the first scraping plate 20 and the second scraping plate 28 are respectively fixedly connected to the head and the tail of the spiral blade 7;

[0046] A detachable top cover 29 is also installed on the top of the recycling barrel 1, and a feed port is provided on the outer wall of the top cover 29.

[0047] Furthermore, a spiral collection channel 9 is fixedly installed on the outer wall of the recycling barrel 1, and the inside of the recycling barrel 1 is communicated with the spiral collection channel 9 through the first discharge port 21.

[0048] See Figure 4 and Figure 6 , a first discharge port 21 and a second discharge port 22 are provided on the outer wall of the recycling barrel 1. As described above, the separated fibers will be transported to the top of the recycling barrel 1 under the action of the frictional force on the inner wall of the recycling barrel 1 and the first conveying part of the spiral blade 7. When the fibers are transported above the spiral blade 7, under the action of the first scraping plate 20, the fibers adhering to the inner wall of the recycling barrel 1 will be scraped out through the first discharge port 21 and dropped into the spiral collection channel 9 for collection; while the plastic particles will fall onto the inner bottom of the recycling barrel 1 along the second conveying part of the spiral blade 7, and the plastic particles will be discharged through the second discharge port 22 under the action of the second scraping plate 28 and collected through an external collection structure to achieve the purpose of separating the fibers and the plastic particles.

[0049] Among them, it is worth mentioning that the air outlet channel 8 is provided with an air outlet corresponding to the first discharge port 21 on the outer wall of the rotating sleeve 6. Cooperating with the first scraping plate 20 can enable the fibers to enter the spiral collection channel 9 more stably, and when a part of the gas ejected through this air outlet enters the spiral collection channel 9 through the first discharge port 21, the fibers therein can be driven to move downward along the spiral collection channel 9 under the action of the air flow, preventing the fibers from staying in the spiral collection channel 9 and being difficult to recycle.

[0050] Furthermore, a through circular hole is provided at the bottom of the recycling barrel 1. A rotating disk 12 is rotatably installed on the inner wall of the circular hole of the recycling barrel 1, and the rotating disk 12 is fixedly connected to the rotating sleeve 6. The first air inlet hole 19 and the air outlet channel 8 are arranged between the two piston plates 16. A second air inlet hole 18 communicating with the outside is provided between the two piston plates 16 and the inner wall of the piston body 15. A second air outlet hole 13 connecting the piston body 15 and the inner bottom of the recycling barrel 1 is provided inside the rotating disk 12, and the second air outlet hole 13 is located between the piston plate 16 and the inner wall of the piston body 15.

[0051] See Figure 3A through circular hole is provided at the bottom of the recycling barrel 1, and a rotating disk 12 is rotatably installed on the inner wall of the circular hole. The rotating disk 12 will rotate with the rotating sleeve 6 and the piston body 15. As can be seen from the above, when the piston body 15 rotates, the piston rod 17 will be driven to slide along the inner wall of the arc-shaped protrusion 14. When the piston rod 17 slides to the edge with the smallest radius of one of the piston rods 17, the piston plate 16 will be quickly rebounded to the next piston rod 17 under the action of the second spring 31, and the air between the piston plate 16 and the inner wall of the piston body 15 will enter the recycling barrel 1 through the second air outlet 13 at a higher flow rate, blowing the plastic particles at the bottom of the recycling barrel 1 to the edge, and cooperating with the second scraper 28 to discharge the plastic particles at the bottom of the recycling barrel 1 from the second discharge port 22, so as to prevent the plastic particles from accumulating at the bottom of the recycling barrel 1.

[0052] Furthermore, the blade surface of the spiral blade 7 is concave toward the center, the air outlet holes of the air outlet channel 8 are spirally opened on the outer wall of the air outlet channel 8, and the air outlet holes of the air outlet channel 8 are all opened obliquely upward.

[0053] This design helps to guide the material to converge and be transported toward the center in an orderly manner along the concave trajectory of the spiral blade 7, reducing the dispersion and deviation of the material during the conveying process, making the conveying process more stable, and compared with flat blades, the concave blades are not easy to cause the material to accumulate on the blade surface, because the material is more likely to slide down the concave surface under the action of gravity, reducing the retention of material on the blade, thereby reducing the possibility of blockage.

[0054] Furthermore, the filter screen 4 is configured to be arc-shaped.

[0055] See also Figure 2 The filter screen 4 is arranged in an arc shape. The arc design enables the filter screen 4 to have a larger surface area in the same space than the flat filter screen 4, which means that more materials can be filtered through the filter screen 4, thereby improving the filtration efficiency. The filter screen 4 is particularly suitable for processing a large amount of plastic waste or other materials that need to be filtered. The arc-shaped filter screen 4 will make the materials falling on its surface move closer to the middle, so that the separation roller 3 can more concentratedly crush and separate the plastic particles and polymers.

[0056] Furthermore, it also includes a pre-crushing component and a preliminary filtering component. The pre-crushing component can perform preliminary crushing on the waste to expose part of the fibers therein, and the preliminary filtering component can separate the exposed fibers.

[0057] See also Figure 9When the waste of the injection molding machine is discharged, the waste is first crushed by a pre-crushing device to separate most of the fibers therein, and the waste is crushed into independent fibers, plastic particles and polymers. Secondly, the independent fibers therein are filtered by a preliminary filtering component, so that the remaining plastic particles and polymers are transported to the separation component through a conveying component to complete the above separation process.

[0058] The standard parts used in this embodiment can be directly purchased from the market. For the non-standard structural components described in the specification and drawings, they can also be directly processed without doubt according to the existing technical knowledge. At the same time, the connection methods of each component adopt the mature conventional means in the existing technology, and the machines, parts and equipment all adopt the conventional models in the existing technology, so no specific description will be made here.

[0059] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An anti-blocking device for recycling waste from an injection molding machine, comprising a recycling barrel (1), characterized in that: The inner wall of the recycling barrel (1) is made of a material with a high friction coefficient. A rotatable rotating sleeve (6) is installed at the center of the interior of the recycling barrel (1). A spiral blade (7) is fixedly installed on the outer wall of the rotating sleeve (6). The rotating direction of the rotating sleeve (6) is opposite to the direction of material falling. The spiral blade (7) is divided into two parts: the side close to the rotating sleeve (6) is a first conveying part, and the side away from the rotating sleeve (6) is a second conveying part. It also includes an air intake component, which can blow the fibers on the surface of the spiral blade (7) toward the inner wall of the recovery barrel (1); It also includes a separation component installed on the top of the recycling barrel (1), which can separate the polymers of plastic particles and fibers and make the separated fibers and plastic particles fall onto the surface of the spiral blade (7).

2. The anti-blocking device for recycling waste from injection molding machines according to claim 1, characterized in that: The separation component comprises a mounting frame (2) mounted on the top of the recycling bin (1); a filter screen (4) is fixedly mounted on the inner wall of the mounting frame (2); two symmetrical mounting vertical plates (11) are fixedly mounted on the inner wall of the mounting frame (2); a rotatable rotating shaft (27) is mounted on the outer wall of the two mounting vertical plates (11); an eccentric disk (26) is fixedly mounted on the outer wall of the two rotating shafts (27); a limiting plate (25) is rotatably mounted on the outer wall of the two eccentric disks (26); a separation roller (3) is rotatably connected between the two limiting plates (25); a straight groove is formed on the outer wall of the two limiting plates (25); and a sliding block that can slide in the straight groove is fixedly mounted on the outer wall of the two mounting vertical plates (11).

3. The anti-blocking device for recycling waste from injection molding machines according to claim 2, characterized in that: The recycling bucket (1) has an annular groove on its top into which the mounting frame (2) can be inserted, and a first spring (24) is installed between the bottom of the annular groove and the bottom of the mounting frame (2), a protrusion (23) is fixedly installed on the outer wall of the mounting frame (2), and a slot (30) is provided on the inner wall of the annular groove of the recycling bucket (1) into which the protrusion (23) can be inserted, and the elastic force of the first spring (24) against the mounting frame (2) can overcome the friction between the protrusion (23) and the slot (30).

4. The anti-blocking device for recycling waste from injection molding machines according to claim 3, characterized in that: The air intake assembly comprises a mounting cavity (10) opened at the bottom of the recovery barrel (1), a plurality of arc-shaped protrusions (14) are arranged on the inner wall of the mounting cavity (10), the plurality of arc-shaped protrusions (14) are connected end to end, and the radius of each arc-shaped protrusion (14) gradually decreases, a rotatable piston body (15) is installed at the bottom of the mounting cavity (10), two slidable piston plates (16) are installed on the inner wall of the piston body (15), piston rods (17) are fixedly installed on the outer walls of the two piston plates (16), a second spring (31) is commonly connected between the two piston rods (17), and the two piston rods (17) both penetrate the outer wall of the piston body (15) and can contact and abut against the arc-shaped protrusions (14); A drive shaft (5) is coaxially fixedly mounted on the inner wall of the rotating sleeve (6), and the drive shaft (5) passes through the inner bottom of the recovery barrel (1) and is fixedly connected to the piston body (15). The outer wall of the piston body (15) is provided with a first air inlet (19) connected to the outside, and an air outlet channel (8) is installed inside the drive shaft (5) so as to connect the inside of the recovery barrel (1) with the inside of the piston body (15), and the air outlet of the air outlet channel (8) is arranged at a position that is closely fitted with the upper blade surface of the spiral blade (7), and a one-way valve is installed inside the air outlet channel (8) and the first air inlet (19).

5. The anti-blocking device for recycling waste from injection molding machines according to claim 4, characterized in that: The outer wall of the recovery barrel (1) is provided with a first discharge port (21) and a second discharge port (22), and the first discharge port (21) and the second discharge port (22) are respectively located above and below the recovery barrel (1); the outer wall of the rotating sleeve (6) is fixedly connected with a first scraper (20) and a second scraper (28), and the first scraper (20) and the second scraper (28) are respectively fixedly connected to the head end and the tail end of the spiral blade (7); A detachable top cover (29) is also installed on the top of the recovery barrel (1), and a feed port is provided on the outer wall of the top cover (29).

6. The anti-blocking device for recycling waste from injection molding machines according to claim 5, characterized in that: A spiral collecting channel (9) is fixedly mounted on the outer wall of the recovery barrel (1), and the interior of the recovery barrel (1) is connected to the spiral collecting channel (9) via a first discharge port (21).

7. The anti-blocking device for recycling waste from injection molding machines according to claim 4, characterized in that: A through circular hole is provided at the bottom of the recovery barrel (1); a rotating disk (12) is rotatably mounted on the inner wall of the circular hole of the recovery barrel (1); and the rotating disk (12) is fixedly connected to the rotating sleeve (6); the first air inlet (19) and the air outlet passage (8) are arranged between the two piston plates (16); a second air inlet (18) that can communicate with the outside is provided between the two piston plates (16) and the inner wall of the piston body (15); a second air outlet (13) that connects the piston body (15) with the bottom of the recovery barrel (1) is provided inside the rotating disk (12); and the second air outlet (13) is located between the piston plate (16) and the inner wall of the piston body (15).

8. The anti-blocking device for recycling waste from injection molding machines according to claim 7, characterized in that: The blade surface of the spiral blade (7) is concave toward the center, the air outlet holes of the air outlet channel (8) are spirally opened on the outer wall of the air outlet channel (8), and the air outlet holes of the air outlet channel (8) are all opened obliquely upward.

9. The anti-blocking device for recycling waste from injection molding machines according to claim 2, characterized in that: The filter screen (4) is designed to be arc-shaped.

10. The anti-blocking device for recycling waste from injection molding machines according to any one of claims 1 to 9, characterized in that: It also includes a pre-crushing component and a preliminary filtering component. The pre-crushing component can perform preliminary crushing on the waste material to expose part of the fibers therein, and the preliminary filtering component can separate the exposed fibers.

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