A resource recycling injection molding machine for recycling waste plastics and its production method

Abstract

The present invention belongs to the technical field of injection molding equipment, and particularly relates to a resource recycling injection molding machine for recycling waste plastics and its production method, including an injection molding machine table, an injection molding body, and a molding mechanism. One end of the molten material injection pipe close to the injection molding body is provided with an ultrasonic quality inspection mechanism for detecting the density of molten plastics, one end of the molten material injection pipe close to the molding mechanism is provided with a temperature control component, the top of one end of the injection molding body close to the molding mechanism is provided with an energy storage exhaust component, and the temperature control component and the energy storage exhaust component cooperate to regularly discharge the gas inside the injection molding body. Ultrasonic degassing mechanisms for discharging the bubbles inside the molten material are arranged on the surface of the injection molding machine table and on both sides of the injection molding body. The present invention can monitor the density change of the melt in real time, can also use heat exchange as power to regularly discharge the gas inside the injection molding machine, and at the same time has ultrasonic degassing technology, and can avoid the ultrasonic generator being in a high temperature state for a long time.

Description

Technical Field

[0001] The present invention belongs to the technical field of injection molding equipment, and particularly relates to a resource recycling injection molding machine for recycling waste plastics and its production method. Background Art

[0002] Recycling of waste plastics is an important way to achieve resource conservation, environmental protection and promote the development of circular economy. The most common way is to reuse waste plastics as injection molding raw materials again. The process of recycling waste plastics and using them as injection molding raw materials involves key steps such as collection, classification, cleaning, crushing, melting and injection molding.

[0003] When using recycled waste plastics as raw materials for injection molding machines, multiple important matters need to be concerned:

[0004] First, different types of plastics have different melting points and fluidities. Therefore, when there are two or more types of plastics mixed in the re-heated plastic raw materials, the quality of the molten material is easily affected, and there are easily parts where melting is insufficient. The density of this part is different from that of other parts, but the existing injection molding equipment cannot monitor the density change of the melt in real time;

[0005] Second, more gases will be released during the heating process of recycled plastics. For the existing injection molding equipment, the exhaust process is only limited to the melt located on the periphery, and the gases existing in the innermost part of the melt cannot be fully removed, resulting in defects such as burn marks and bubbles. Summary of the Invention

[0006] The purpose of the present invention is to provide a resource recycling injection molding machine for recycling waste plastics and its production method, which can monitor the density change of the melt in real time, can also use heat exchange as power to regularly discharge the gases in the injection molding machine body, and at the same time has an ultrasonic degassing technology, and can avoid the ultrasonic generator being in a high temperature state for a long time.

[0007] The technical solutions adopted by the present invention are specifically as follows:

[0008] A resource recycling injection molding machine for recycling waste plastics, including an injection molding machine table, an injection molding body, and a molding mechanism. The molding mechanism is arranged at one end of the injection molding machine table, and the injection molding body is arranged on the surface of the injection molding machine table. One end of the injection molding body is connected with a melt injection pipe for injecting molten material into the mold inside the molding mechanism. A spiral feeder is rotationally assembled inside the injection molding body. One end of the injection molding body away from the molding mechanism is assembled with a rotation mechanism for controlling the rotation of the spiral feeder. One end of the rotation mechanism away from the injection molding body is assembled with a pushing mechanism for pushing the spiral feeder. A feeding hopper mechanism for feeding plastic particles is assembled on the surface of the injection molding body. One end of the melt injection pipe close to the injection molding body is provided with an ultrasonic quality inspection mechanism for detecting the density of molten plastic. One end of the melt injection pipe close to the molding mechanism is provided with a temperature control component. At the top of one end of the injection molding body close to the molding mechanism, there is an energy storage exhaust component, and the temperature control component cooperates with the energy storage exhaust component to regularly discharge the gas inside the injection molding body. Ultrasonic bubble removal mechanisms for discharging the bubbles inside the melt are arranged on both sides of the injection molding body on the surface of the injection molding machine table;

[0009] Through the cooperation of the ultrasonic density meter and the receiving device, it is used to directly measure the density of the fluid inside the quality inspection pipe;

[0010] By utilizing the heat of the molten plastic and cooperating with the separable structure of the copper shell and the first copper pipe, the air cylinder has an energy storage process. The instantaneous suction force generated when the energy storage of the air cylinder reaches the limit is used to extract the gas existing inside the injection molding body;

[0011] Through the combination of ultrasonic generators that are intermittently in contact with the melt, it is used to remove the bubbles inside the molten plastic.

[0012] A heating mechanism for heating plastic particles is fixedly assembled inside the injection molding body. A stagnation cavity is opened inside one end of the injection molding body close to the molding mechanism. One end of the spiral feeder located inside the stagnation cavity is integrally provided with a tapered plug. An exhaust duct for discharging gas is opened at the top of one end of the injection molding body close to the stagnation cavity.

[0013] A diverter valve for changing the flow direction of the melt is arranged at the connection of the melt injection pipe corresponding to the ultrasonic quality inspection mechanism. A ball valve core is rotationally assembled inside the diverter valve. One end of the shaft body of the ball valve core extending to the bottom of the diverter valve is installed with a first helical gear. A first motor is fixedly installed on the outer wall of the injection molding body and below the diverter valve, and the output end of the first motor is installed with a second helical gear meshing with the first helical gear. A branch pipe is integrally provided at the top of the diverter valve. Sector-shaped through holes two are symmetrically penetrated inside the branch pipe. A shunt pipe is integrally provided at the top of the ball valve core, and the shunt pipe is placed inside the branch pipe. Sector-shaped through holes one are symmetrically penetrated inside the shunt pipe;

[0014] The ultrasonic quality inspection mechanism includes a quality inspection pipe communicated with the branch pipe. On one side of the outer wall of the quality inspection pipe, an ultrasonic densitometer is fixedly installed. On the other side of the outer wall of the quality inspection pipe, a receiving device and a display are fixedly installed. The ultrasonic densitometer and the receiving device are cooperatively used to detect the density of the molten fluid. The top of the quality inspection pipe is fixedly connected with a material extraction pipe, and the material extraction pipe is in an inverted U shape and its end is connected with a material extraction cylinder for collecting molten material samples.

[0015] A heat conduction cavity is formed inside the injection molding body near one end of the molding mechanism. The temperature control component includes a first copper pipe, a second copper pipe and a water storage tank. The first copper pipe is installed inside the heat conduction cavity. The second copper pipe is arranged above the first copper pipe. Fins are arranged on the side walls of the first copper pipe and the second copper pipe close to each other. A copper shell for guiding heat from the first copper pipe to the second copper pipe is slidably assembled between the first copper pipe and the second copper pipe through the fins. Groove plates are arranged on both sides of the fins at the bottom of the second copper pipe. Wall rods penetrating through the groove plates are fixedly connected to the outer walls on both sides of the copper shell. A water pipe is connected to the bottom of the water storage tank, and the water pipe is wound around the outside of the second copper pipe. The end of the water pipe far away from the water storage tank is connected with an elastic air bag, and the elastic air bag is placed on one side of the top of the water storage tank.

[0016] A hook frame is fixedly installed on one side of the water storage tank, and the elastic air bag is fixedly installed inside the hook frame. A first spring is connected between the top of the elastic air bag and the inner wall of the top of the hook frame. An air hole for exhausting air is formed in the top of the elastic air bag. Sliders are symmetrically and dampingly slidably assembled on the top of the elastic air bag. Flap valves for blocking the air hole are arranged on the opposite sides of the two sliders. Oblique grooves are formed on the surfaces of the sliders. Extension rods are integrally arranged on the opposite sides of the two sliders. Thumb rods for being inserted into the corresponding oblique grooves are fixedly arranged on the inner wall of the top of the hook frame. Wedge-shaped stoppers for squeezing and contacting the ends of the corresponding extension rods are fixedly arranged on the inner walls of both sides of the hook frame. A connecting plate is fixedly arranged on the top of the elastic air bag. Arm rods and arm rods are fixedly connected to both ends of the connecting plate. The bottom end of the arm rod is connected to the end of the corresponding wall rod. A first toothed rod is integrally arranged at the end of the arm rod.

[0017] The energy storage exhaust assembly includes a ledge, a lever, and a cylinder. The two ledges are fixedly installed on the side wall of the injection molding machine body close to the molding mechanism. A first gear meshing with the first rack is rotatably installed on the top of the ledge. And a second gear is coaxially fixedly assembled inside the first gear. A third gear meshing with the second gear is rotatably assembled on the top of the ledge. And a fourth gear is coaxially fixedly assembled on one side of the first gear. A second rack meshing with the fourth gear is slidably assembled in a lifting manner on the top of the ledge. A bracket is fixedly installed on the top of one end of the injection molding machine body. And the two levers are rotatably assembled inside the bracket. The two second racks are connected to the ends of the levers far from the transfer point. An ejector rod is elastically telescopically assembled at the other end of the lever close to the transfer point. On the inner walls of both sides of the bracket and corresponding to the lower part of the ejector rod, a stop rod is elastically rotatably assembled through a coil spring. Side rods are fixedly connected to the outer walls of the same side of the ejector rod and the stop rod.

[0018] The cylinder is fixedly installed on the top of the injection molding machine body. A first suction pipe communicating with the exhaust duct is fixedly connected to the top of the cylinder. A piston member is telescopically assembled inside the cylinder. The bottom end of the piston member extending out of the cylinder is fixedly connected to a bottom plate. The bottom plate and the cylinder are slidably assembled through a guide rod and a guide sleeve. And a second spring is connected between the bottom plate and the outer wall of the cylinder. Both ends of the second spring are fixedly connected to ratchet rods. On both ends of the second spring and outside the ratchet rods, top blocks are fixedly arranged. Pressure rods are fixedly connected to the outer walls of the two ratchet rods.

[0019] Wall shells are fixedly installed on the outer walls of both sides of the bracket. And a T-shaped belt rod for temporarily hooking the side rod is elastically telescopically assembled at one end of the wall shell close to the ratchet rod. A second wedge-shaped stopper for squeezing and contacting the top block is integrally arranged on the outer wall of the T-shaped belt rod far from the wall shell. A locking groove is opened at the bottom side of the middle of the horizontal end of the T-shaped belt rod. An inner ejector rod for temporarily entering the locking groove is elastically telescopically assembled at the bottom of the wall shell. And a through rod penetrating the side wall of the wall shell is fixedly connected to the side wall of the inner ejector rod.

[0020] Sound wave cavities are arrayed on both sides of the injection molding machine body close to the inside of the exhaust duct. And an air extraction duct and an air supply duct are opened above each sound wave cavity inside the injection molding machine body. The ultrasonic bubble removal mechanism includes a second motor and an ultrasonic generator. The output end of the second motor is provided with a gearbox. And the output shaft of the second motor is connected to the input end of the gearbox. The output end of the gearbox is connected to a crankshaft. The ultrasonic generators are slidably assembled inside the corresponding sound wave cavities. And one end of the ultrasonic generator extending out of the sound wave cavity is fixedly connected to a groove rod. The groove rods on the same side are jointly connected to the corresponding crankshaft. Straight grooves are opened on the outer walls of the ultrasonic generators. And ratchet teeth are arranged at one end of the straight grooves far from the groove rods.

[0021] Inside the injection molding machine body and below the acoustic cavity, a fifth gear, a sixth gear and a transmission rod are rotatably installed. The fifth gear is detachably meshed with the row of teeth. The sixth gear is meshed with the fifth gear. The sixth gear and the transmission rod are meshed and driven through a helical gear set. One end of the transmission rod away from the sixth gear is installed with a seventh gear. One end of the acoustic cavity close to the screw feeder is fixedly installed with an annular plate. The side wall of the annular plate is connected and assembled with a fixed ring through rotation center rods distributed in a ring shape. Between the annular plate and the fixed ring, sealing blocks are rotatably assembled in an annular distribution, and the sealing blocks and the rotation center rods are rotatably assembled. A guide rod is fixedly connected to the side wall of the edge of the sealing block. An active ring body is movably sleeved on the outer edge of the fixed ring, and a partial tooth engaged with the seventh gear is arranged on one side of the outer wall of the active ring body. Oblique grooves two for allowing the corresponding guide rods to penetrate through are annularly arranged on the outer edge of the active ring body. When the sealing blocks converge, they are used to block the acoustic cavity.

[0022] The top of the gearbox is installed with an air pump generating body, and the input shaft of the air pump generating body is in transmission connection with the output shaft of the second motor. The air inlet end of the air pump generating body is connected with a second suction pipe, and the second suction pipe is communicated with the air extraction duct on the same side.

[0023] A resource regeneration production method for recycling waste plastics is as follows:

[0024] Step1: Collection and classification. There are various types of waste plastics, and different types of plastics have different processing properties and uses. Therefore, effective classification of waste plastics is a key step to achieve high-quality recycling and utilization.

[0025] Step2: Cleaning and crushing. Before processing waste plastics, the surface contaminants need to be removed through cleaning. After cleaning, the waste plastics need to be crushed to reduce them to a certain particle size for subsequent melting and reshaping.

[0026] Step3: Melting and regranulation. The crushed plastic fragments will undergo a melting process and turn into a liquid or semi-liquid state. The melted plastic is made into small particles through a granulator, that is, recycled plastic particles.

[0027] Step4: Particle screening and re-crushing. Before putting the plastic particles into the barrel of the injection molding machine, the plastic particles are screened to separate the smaller and larger plastic particles, and then melted and regranulated again.

[0028] Step5: Injection molding. After the recycled plastic particles are dried and preheated, they are fed into the barrel of the injection molding machine, heated to a flowing state, and then injected into the mold to form a product with a predetermined shape.

[0029] Step6: Quality and environmental protection considerations. The formed products are subjected to quality inspection, and the strength, burrs, pores, etc. of the finished products are inspected. At the same time, the environmental protection and safety standards need to be met.

[0030] The technical effects achieved by the present invention are as follows:

[0031] (1) In the present invention, during the injection molding operation, the density of the molten plastic can be directly obtained, so as to timely know the quality of the molten waste plastic, which is convenient for dealing with situations such as insufficient melting and poor fluidity of the recycled plastic, facilitating real-time monitoring of the density change of the melt, and timely detecting and eliminating defects.

[0032] (2) In the present invention, by utilizing the heat of the molten plastic and combining with the separable structure of the copper shell and the first copper tube, the elastic airbag has a repeated expansion process, so that the air cylinder has an energy storage process. The instantaneous suction force generated when the energy storage of the air cylinder reaches the limit is used to extract the gas existing inside the injection molding machine body. In the whole process, heat exchange is used as the main power, without the need to use additional timing devices and power equipment, and the work of regularly discharging the gas inside the injection molding machine body can be realized, solving the problem that recycled plastic is prone to release more gas during the heating process, improving the exhaust effect of the injection molding machine, and avoiding defects such as burn marks and bubbles.

[0033] (3) In the present invention, the ultrasonic generators located on both sides, when contacting the molten material, can remove the bubbles in the molten plastic by generating ultrasonic waves, realizing the ultrasonic degassing technology, and further improving the exhaust effect of the injection molding machine; in addition, each ultrasonic generator will intermittently contact the molten material in the injection molding machine body to avoid the situation that a single ultrasonic generator contacts the molten material for a long time.

[0034] (4) In the present invention, when the ultrasonic generator penetrates into the injection molding machine body, each sealing block opens and provides a hole for the ultrasonic generator to penetrate. When the ultrasonic generator is away from the injection molding machine body, each sealing block can be closed in time after the ultrasonic generator withdraws to avoid the leakage of the molten material; in addition, the air pump body operates following the second motor, and can extract the hot air inside the exhaust duct through the second suction pipe to cool down the ultrasonic generator, avoiding the ultrasonic generator being in a high-temperature state for a long time. Description of the Drawings

[0035] Figure 1 is the integrated structure diagram of the injection molding machine provided by the embodiment of the present invention;

[0036] Figure 2 is the integrated structure diagram of the injection molding machine table provided by the embodiment of the present invention;

[0037] Figure 3 is the cross-sectional structure diagram of the injection molding machine body provided by the embodiment of the present invention;

[0038] Figure 4 is the combined cross-sectional structure diagram of the molten material injection pipe and the ultrasonic quality inspection mechanism provided by the embodiment of the present invention;

[0039] Figure 5 is Figure 4 The partial enlarged structure diagram at position A in

[0040] Figure 6 is the disassembly diagram of the integrated structure of the temperature control component and the energy storage exhaust component provided by the embodiment of the present invention;

[0041] Figure 7 is the integrated sectional view of the hook frame and the elastic airbag provided by the embodiment of the present invention;

[0042] Figure 8 is the disassembly diagram of the structure of the energy storage exhaust component provided by the embodiment of the present invention;

[0043] Figure 9 is Figure 8 The partial enlarged structure diagram at position B in

[0044] Figure 10 is the structure diagram of the ultrasonic bubble removal mechanism provided by the embodiment of the present invention;

[0045] Figure 11 is the structure diagram of a single ultrasonic generator located inside the injection molding machine provided by the embodiment of the present invention;

[0046] Figure 12 is the disassembly diagram of the internal structure of a single acoustic cavity provided by the embodiment of the present invention;

[0047] Figure 13 is the flow chart of the resource regeneration production method provided by the embodiment of the present invention.

[0048] In the drawings, the list of components represented by each reference numeral is as follows:

[0049] 1. Injection molding machine platform;

[0050] 2. Injection molding machine body; 201. Melt injection pipe; 202. Branch valve; 203. Heating mechanism; 204. Stagnation cavity; 205. Screw feeder; 206. Cone plug; 207. Exhaust duct; 208. Ball valve core; 209. Shunt pipe; 210. Sector-shaped through hole one; 211. Helical gear one; 212. Motor one; 213. Helical gear two; 214. Branch pipe; 215. Sector-shaped through hole two; 216. Heat conduction cavity; 217. Acoustic cavity; 218. Air extraction duct; 219. Air supply duct;

[0051] 3. Rotating mechanism;

[0052] 4. Pushing mechanism;

[0053] 5. Feeding hopper mechanism;

[0054] 6. Molding mechanism;

[0055] 7. Ultrasonic quality inspection mechanism; 701. Quality inspection pipe; 702. Material extraction pipe; 703. Ultrasonic densitometer; 704. Receiving device; 705. Display; 706. Material extraction cylinder;

[0056] 8. Temperature control component; 801. First copper pipe; 802. Second copper pipe; 803. Copper shell; 804. Wall rod; 805. Grooved plate; 806. Water pipe; 807. Water storage tank; 808. Water replenishing pipe; 809. Hook rack; 810. Elastic airbag; 811. First spring; 812. Flap; 813. Slide block; 814. First inclined groove; 815. Thrust rod; 816. Extension rod; 817. First wedge-shaped stop block; 818. First arm rod; 819. Second arm rod; 820. First toothed rod;

[0057] 9. Energy storage and exhaust component; 901. Wall shelf; 902. First gear; 903. Second gear; 904. Third gear; 905. Fourth gear; 906. Second toothed rod; 907. Bracket; 908. Lever; 909. Pry bar; 910. Stop rod; 911. Side rod; 912. Air cylinder; 913. Piston part; 914. First suction pipe; 915. Bottom plate; 916. Second spring; 917. Ratchet toothed rod; 918. Top block; 919. Pressure rod; 920. Wall shell; 921. T-shaped belt rod; 922. Second wedge-shaped stop block; 923. Lock groove; 924. Through rod;

[0058] 10. Ultrasonic degassing mechanism; 1001. Second motor; 1002. Gearbox; 1003. Crankshaft; 1004. Grooved rod; 1005. Ultrasonic generator; 1006. Straight groove; 1007. Row of teeth; 1008. Fifth gear; 1009. Sixth gear; 1010. Transmission rod; 1011. Movable ring body; 1012. Seventh gear; 1013. Local tooth; 1014. Second inclined groove; 1015. Ring plate; 1016. Fixed ring; 1017. Sealing block; 1018. Guide rod; 1019. Air pump generating body; 1020. Second suction pipe. Detailed implementation manners

[0059] In order to make the purpose and advantages of the present invention clearer, the present invention will be specifically described below in conjunction with embodiments. It should be understood that the following text is only used to describe one or several specific implementation manners of the present invention, and does not strictly limit the scope of protection specifically claimed by the present invention.

[0060] As Figure 1-12As shown in the figure, a resource recycling injection molding machine for recycling waste plastics includes an injection molding machine table 1, an injection molding body 2, and a molding mechanism 6. The molding mechanism 6 is arranged at one end of the injection molding machine table 1, the injection molding body 2 is arranged on the surface of the injection molding machine table 1, and one end of the injection molding body 2 is connected with a melt injection pipe 201 for injecting molten material into the internal mold of the molding mechanism 6. A screw feeder 205 is rotationally assembled inside the injection molding body 2. One end of the injection molding body 2 away from the molding mechanism 6 is assembled with a rotation mechanism 3 for controlling the rotation of the screw feeder 205. One end of the rotation mechanism 3 away from the injection molding body 2 is assembled with a pushing mechanism 4 for pushing the screw feeder 205. A feeding hopper mechanism 5 for putting plastic particles is assembled on the surface of the injection molding body 2. A heating mechanism 203 for heating plastic particles is fixedly assembled inside the injection molding body 2. A stagnation chamber 204 is opened inside the injection molding body 2 near one end of the molding mechanism 6. A conical plug 206 is integrally arranged at one end of the screw feeder 205 located inside the stagnation chamber 204. An exhaust duct 207 for discharging gas is opened at the top of the injection molding body 2 near one end of the stagnation chamber 204.

[0061] According to the above structure, after the plastic particles are put into the feeding hopper mechanism 5, they immediately enter the inside of the injection molding body 2. The rotation mechanism 3 is used to control the rotation of the screw feeder 205. After the plastic particles are heated by the heating mechanism 203, they turn into a molten state. During the transportation by the screw feeder 205, the gas in the molten material will be discharged through the exhaust duct 207. The molten material accumulates inside the stagnation chamber 204. When it is necessary to inject into the molding mechanism 6, the conical plug 206 is pushed by the pushing mechanism 4 to inject the molten material in the stagnation chamber 204 into the molding mechanism 6, thus completing the injection molding work of the plastic. The above processes are all prior arts and will not be elaborated here.

[0062] Refer to the appendix Figures 1-3 At one end of the melt injection pipe 201 close to the injection molding body 2, an ultrasonic quality inspection mechanism 7 for detecting the density of molten plastic is arranged. At one end of the melt injection pipe 201 close to the molding mechanism 6, a temperature control component 8 is arranged. An energy storage exhaust component 9 is arranged at the top of the injection molding body 2 near one end of the molding mechanism 6. And the temperature control component 8 and the energy storage exhaust component 9 cooperate to regularly discharge the gas inside the injection molding body 2. Ultrasonic degassing mechanisms 10 for discharging the air bubbles inside the molten material are arranged on the surface of the injection molding machine table 1 and on both sides of the injection molding body 2.

[0063] Example 1:

[0064] Refer to the appendix Figures 4-5, at the connection of the melt injection pipe 201 corresponding to the ultrasonic quality inspection mechanism 7, a flow dividing valve 202 for changing the melt flow direction is provided. Inside the flow dividing valve 202, a ball valve core 208 is rotationally assembled. One end of the shaft body of the ball valve core 208 extending to the bottom of the flow dividing valve 202 is installed with a first helical gear 211. On the outer wall of the injection molding machine body 2 and below the flow dividing valve 202, a first motor 212 is fixedly installed, and the output end of the first motor 212 is installed with a second helical gear 213 meshing with the first helical gear 211. The top of the flow dividing valve 202 is integrally provided with a branch pipe 214. Inside the branch pipe 214, fan-shaped through holes two 215 are symmetrically penetrated. The top of the ball valve core 208 is integrally provided with a flow dividing pipe 209, and the flow dividing pipe 209 is placed inside the branch pipe 214. Inside the flow dividing pipe 209, fan-shaped through holes one 210 are symmetrically penetrated.

[0065] Refer to the appendix Figures 4-5 , the ultrasonic quality inspection mechanism 7 includes a quality inspection pipe 701 communicated with the branch pipe 214. On one side of the outer wall of the quality inspection pipe 701, an ultrasonic densitometer 703 is fixedly installed. On the other side of the outer wall of the quality inspection pipe 701, a receiving device 704 and a display 705 are fixedly installed. The ultrasonic densitometer 703 and the receiving device 704 cooperate to detect the density of the molten fluid. The top of the quality inspection pipe 701 is fixedly connected with a material extraction pipe 702. The material extraction pipe 702 is in an inverted U shape and the end is connected with a material extraction cylinder 706 for collecting melt samples.

[0066] According to the above structure, during the normal use of the injection molding machine, the melt injection pipe 201 is in a flowing state. To ensure the injection molding quality, the detection of the melting quality of the molten plastic is regularly started. First, start the first motor 212, drive the ball valve core 208 to rotate through the meshing of the first helical gear 211 and the second helical gear 213. As shown in the appendix Figure 4 , it can be known that after the ball valve core 208 rotates 90 degrees, the melt injection pipe 201 is in a closed state. At this time, the fan-shaped through hole one 210 just coincides with the fan-shaped through hole two 215, the quality inspection pipe 701 is communicated with the branch pipe 214, and the molten plastic directly flows into the quality inspection pipe 701. During the flowing process, through the cooperation of the ultrasonic densitometer 703 and the receiving device 704, the density of the internal fluid can be directly measured. Through the above process, the density of the plastic after melting can be directly known, so as to timely know the quality of the waste plastic after melting, which is convenient for dealing with situations such as insufficient melting and poor fluidity of the recycled plastic, convenient for real-time monitoring of the product quality, and timely discovery and elimination of defects.

[0067] The working principle of the present invention is: during the normal use of the injection molding machine, the melt injection pipe 201 is in a flowing state. To ensure the injection molding quality, the detection of the melting quality of the molten plastic is regularly started. First, start the first motor 212, drive the ball valve core 208 to rotate through the meshing of the first helical gear 211 and the second helical gear 213. As shown in the appendix Figure 4It can be seen that after the spherical valve core 208 rotates 90 degrees, the melt injection pipe 201 is in a closed state. At this time, the sector through hole one 210 just coincides with the sector through hole two 215, the quality inspection pipe 701 communicates with the branch pipe 214, and the molten plastic directly flows into the quality inspection pipe 701. During the flowing process, through the cooperation of the ultrasonic density meter 703 and the receiving device 704, the density of the fluid inside the quality inspection pipe 701 can be directly measured. The sample fluid in this process will finally flow into the pumping cylinder 706 through the pumping pipe 702. After the quality inspection is completed, the spherical valve core 208 can be controlled to reset by the first motor 212.

[0068] Embodiment 2:

[0069] Refer to the appendix Figure 4 、 Figures 6-7 In the interior of the injection molding machine body 2 near one end of the molding mechanism 6, there is a heat conduction cavity 216. The temperature control assembly 8 includes a first copper pipe 801, a second copper pipe 802, and a water storage tank 807. The first copper pipe 801 is installed inside the heat conduction cavity 216. The second copper pipe 802 is arranged above the first copper pipe 801, and fins are provided on the side walls of the first copper pipe 801 and the second copper pipe 802 that are close to each other. A copper shell 803 for guiding heat from the first copper pipe 801 to the second copper pipe 802 is slidably assembled between the first copper pipe 801 and the second copper pipe 802 through fins. On both sides of the fins at the bottom of the second copper pipe 802, there are groove plates 805, and wall rods 804 penetrating through the groove plates 805 are fixedly connected to the outer walls on both sides of the copper shell 803. A water pipe 806 is connected to the bottom of the water storage tank 807, and the water pipe 806 is wound around the outside of the second copper pipe 802. One end of the water pipe 806 away from the water storage tank 807 is connected to an elastic airbag 810, and the elastic airbag 810 is placed on one side of the top of the water storage tank 807, and the height position of the elastic airbag 810 is higher than the top of the water storage tank 807;

[0070] Refer to the appendix Figures 6-7, a hook rack 809 is fixedly installed on one side of the water storage tank 807, and an elastic airbag 810 is fixedly installed inside the hook rack 809. A first spring 811 is connected between the top of the elastic airbag 810 and the inner wall of the top of the hook rack 809. An air hole for exhausting air is opened at the top of the elastic airbag 810, and sliders 813 are symmetrically and dampedly slidably assembled on the top of the elastic airbag 810. Flap valves 812 for blocking the air hole are arranged on the opposite sides of the two sliders 813. A first inclined groove 814 is opened on the surface of the slider 813. Extension rods 816 are integrally arranged on the opposite sides of the two sliders 813. A ejector rod 815 for entering into the corresponding first inclined groove 814 is fixedly arranged on the inner wall of the top of the hook rack 809. Wedge-shaped stoppers 817 for squeezing and contacting the ends of the corresponding extension rods 816 are fixedly arranged on the inner walls of both sides of the hook rack 809. A connecting plate is fixedly arranged on the top of the elastic airbag 810. Both ends of the connecting plate are fixedly connected with a first arm rod 818 and a second arm rod 819. The bottom end of the first arm rod 818 is connected to the end of the corresponding wall rod 804. A first toothed rod 820 is integrally arranged at the end of the second arm rod 819.

[0071] According to the above structure, during the normal use of the injection molding machine, the molten plastic is injected into the molding mechanism 6 through the melt injection pipe 201. The heat brought by the flowing molten plastic will be conducted to the first copper pipe 801. When the copper shell 803 is in contact with the first copper pipe 801 and the second copper pipe 802 at the same time, the heat energy will be conducted to the second copper pipe 802 through the copper shell 803 at the same time. At this time, the water pipe 806 wound around the outer wall of the second copper pipe 802 will absorb heat, and the water in the water pipe 806 will be directly heated and a large amount of gas will be generated. Under the action of water pressure and water flow, the gas will climb along the water pipe 806 and finally gather in the elastic airbag 810 and inside the water storage tank 807. As the internal air pressure increases, the elastic airbag 810 expands and squeezes the first spring 811. The connecting plate will drive the first arm rod 818 and the second arm rod 819 to move upward together. When the elastic airbag 810 expands to the limit position, the ejector rod 815 will enter into the first inclined groove 814 and make squeezing contact with the inclined surface in the groove. The two sliders 813 will drive the flap valves 812 to move away from each other. The air hole at the top of the elastic airbag 810 is opened and the internal gas is quickly discharged. According to the principle of the communicating vessel, the liquid levels at both ends of the water pipe 806 will finally reach the same height and stabilize under the rapid movement of gas and liquid. When the elastic airbag 810 returns to its original shape under the elastic force of the first spring 811, under the squeezing contact between the extension rod 816 and the wedge-shaped stopper 817, the two flap valves 812 approach each other and block the air hole again;

[0072] Among them, when the first arm 818 moves upward, the copper shell 803 will move upward together and will finally quickly separate from the first copper pipe 801. Then, the first copper pipe 801 will stop conducting heat to the second copper pipe 802. Immediately, the second copper pipe 802 will enter the cooling process, and the effect of the water in the water pipe 806 heating up and generating gas will slow down. When the elastic airbag 810 expands to the limit and deflates, the process of water volatilizing into gas changes from intense to slow. Under the elastic force of the first spring 811 in the compressed state, the connecting plate, together with the first arm 818 and the second arm 819, quickly moves downward to reset. The copper shell 803 comes into contact with the first copper pipe 801 again. After a period of time, the water in the water pipe 806 will re-enter the heating process. In this way, the reciprocating up and down movement of the first arm 818 and the second arm 819 is achieved.

[0073] Refer to the appendix Figure 6 、 Figures 8-9 As shown in the figure, the energy storage and exhaust assembly 9 includes a wall frame 901, a lever 908, and a cylinder 912. The two wall frames 901 are fixedly installed on the side wall of the injection molding machine body 2 close to the molding mechanism 6. A first gear 902 meshing with the first rack 820 is rotatably installed at the top of the wall frame 901. And a second gear 903 is coaxially fixedly assembled inside the first gear 902. A third gear 904 meshing with the second gear 903 is rotatably assembled at the top of the wall frame 901. And a fourth gear 905 is coaxially fixedly assembled on one side of the first gear 902. A second rack 906 meshing with the fourth gear 905 is slidably assembled in a lifting manner at the top of the wall frame 901. A support 907 is fixedly installed at the top of one end of the injection molding machine body 2. And the two levers 908 are rotatably assembled inside the support 907. The two second racks 906 are connected to the ends of the levers 908 far from the transfer point. A crowbar 909 is elastically telescopically assembled at the other end of the lever 908 close to the transfer point. A stop rod 910 is elastically rotatably assembled through a coil spring on the inner walls on both sides of the support 907 corresponding to the lower part of the crowbar 909. Side rods 911 are fixedly connected to the outer walls of the same side of the crowbar 909 and the stop rod 910.

[0074] Refer to the appendix Figures 8-9 As shown in the figure, the cylinder 912 is fixedly installed on the top of the injection molding machine body 2. A first suction pipe 914 communicating with the exhaust passage 207 is fixedly connected to the top of the cylinder 912. A piston member 913 is telescopically assembled inside the cylinder 912. The bottom plate 915 is fixedly connected to the bottom end of the piston member 913 extending out of the cylinder 912. The bottom plate 915 and the cylinder 912 are slidably assembled through a guide rod and a guide sleeve. And a second spring 916 is connected between the outer wall of the bottom plate 915 and the cylinder 912. Both ends of the second spring 916 are fixedly connected with ratchet rods 917. The end of the stop rod 910 can be detachably inserted into the tooth groove of the ratchet rod 917. Top blocks 918 are fixedly arranged on the outer sides of both ends of the second spring 916 and located outside the ratchet rods 917. Pressure rods 919 are fixedly connected to the outer walls of the two ratchet rods 917;

[0075] Refer to the appendixFigures 8-9 On both outer walls of the bracket 907, wall shells 920 are fixedly installed. At one end of the wall shell 920 close to the ratchet rod 917, a T-shaped belt rod 921 for temporarily hooking the side rod 911 is assembled in an elastic telescopic manner. On the outer wall of the T-shaped belt rod 921 away from the wall shell 920, a second wedge-shaped stop block 922 for squeezing and contacting the top block 918 is integrally provided. At the bottom side of the middle of the horizontal end of the T-shaped belt rod 921, a locking groove 923 is formed. At the bottom of the wall shell 920, an inner ejector rod for temporarily entering the locking groove 923 is assembled in an elastic telescopic manner, and a through rod 924 penetrating the side wall of the wall shell 920 is fixedly connected to the side wall of the inner ejector rod.

[0076] According to the above structure, during the upward movement of the second arm rod 819, since the first rack 820 meshes with the first gear 902, the first gear 902 immediately rotates together with the second gear 903. Also, since the second gear 903 meshes with the third gear 904, the third gear 904 rotates together with the fourth gear 905. Finally, the second rack 906 will move straight upward, and the lever 908 will deflect immediately. Since the end of the stop rod 910 enters the tooth groove of the ratchet rod 917, the ratchet rod 917 cannot move downward at this time and can only move upward. Therefore, the pry bar 909 at the end of the lever 908 will have squeezing contact with the tooth surface of the ratchet rod 917, and the pry bar 909 will retract into the shell at the end of the lever 908; when the second arm rod 819 moves downward, the pry bar 909 at this time will pry the ratchet rod 917 upward. During the reciprocating up and down movement of the second arm rod 819, the bottom plate 915 will carry the piston member 913 upward and deeply into the air cylinder 912 to compress the second spring 916;

[0077] When the bottom plate 915 moves upward and approaches the limit position, the top block 918 has squeezing contact with the second wedge-shaped stop block 922, and the T-shaped belt rod 921 is retracted into the wall shell 920. One end of the inner ejector rod will enter the locking groove 923 and temporarily lock the T-shaped belt rod 921. During this process, the T-shaped belt rod 921 will hook the side rod 911 and carry the pry bar 909 and the stop rod 910 away from the ratchet rod 917. Finally, the ratchet rod 917 will be in a free state, and the piston member 913 will quickly move downward under the elastic force of the second spring 916. An instantaneous suction force will be generated inside the air cylinder 912. Finally, the gas stagnating in the injection molding body 2 will be extracted by the first suction pipe 914 under this suction force;

[0078] In the above process, by utilizing the heat of the molten plastic and in cooperation with the separable structure of the copper shell 803 and the first copper tube 801, the elastic airbag 810 is enabled to have a process of repeated expansion, so that the air cylinder 912 has an energy storage process. The instantaneous suction force generated when the energy storage of the air cylinder 912 reaches the limit is used to extract the gas existing inside the injection molding body 2. In the whole process, heat exchange is used as the main power, and there is no need to use additional timing devices and power equipment. The work of regularly discharging the gas inside the injection molding body 2 can be realized, the problem that recycled plastics are prone to release more gas during the heating process is solved, the exhaust effect of the injection molding machine is improved, and defects such as burn marks and bubbles are avoided.

[0079] The working principle of the present invention is as follows: The molten plastic is injected into the molding mechanism 6 through the melt injection pipe 201. The heat brought by the flowing molten plastic will be conducted to the first copper tube 801. When the copper shell 803 is in contact with the first copper tube 801 and the second copper tube 802 at the same time, the heat energy will be conducted to the second copper tube 802 through the copper shell 803 at the same time. At this time, the water pipe 806 wound around the outer wall of the second copper tube 802 will absorb the heat, and the water in the water pipe 806 will be directly heated and a large amount of gas will be generated. Under the action of the water pressure and water flow, the gas will climb along the water pipe 806 and finally gather inside the elastic airbag 810 and inside the water storage tank 807. As the internal air pressure increases, the elastic airbag 810 expands and presses the first spring 811, and the connecting plate will carry the first arm 818 and the second arm 819 to move upward together. When the elastic airbag 810 expands to the limit position, the ejector rod 815 will enter the first inclined groove 814 and make extrusion contact with the inclined surface in the groove, and the two sliders 813 will carry the flap 812 away from each other, and the air hole at the top of the elastic airbag 810 will be opened and the internal gas will be quickly discharged; among them, when the first arm 818 moves upward, the copper shell 803 will move upward together and will finally quickly separate from the first copper tube 801, and the first copper tube 801 will stop conducting heat to the second copper tube 802, and the second copper tube 802 will then enter the cooling process, and the effect of the water in the water pipe 806 heating up and generating gas will slow down. When the elastic airbag 810 expands to the limit and deflates, the process of water volatilizing into gas changes from intense to slow. Under the elastic force of the first spring 811 in the compressed state, the connecting plate carries the first arm 818 and the second arm 819 to quickly move downward and reset, and the copper shell 803 contacts the first copper tube 801 again, and the water in the water pipe 806 will re-enter the heating process after a period of time. In this way, the reciprocating up and down movement of the first arm 818 and the second arm 819 is realized;

[0080] During the upward movement of the second arm 819, since the first rack 820 meshes with the first gear 902, the first gear 902 immediately rotates together with the second gear 903. Also, since the second gear 903 meshes with the third gear 904, the third gear 904 rotates together with the fourth gear 905. Finally, the second rack 906 will move straight upward, and the lever 908 will deflect immediately. Since the end of the stop lever 910 fits into the tooth groove of the ratchet lever 917, the ratchet lever 917 cannot move downward at this time and can only move upward. Therefore, the pry bar 909 at the end of the lever 908 will come into pressing contact with the tooth surface of the ratchet lever 917, and the pry bar 909 will retract into the housing at the end of the lever 908; when the second arm 819 moves downward, the pry bar 909 at this time will pry the ratchet lever 917 upward. During the reciprocating up and down movement of the second arm 819, the bottom plate 915 will carry the piston member 913 upward and deep into the air cylinder 912 to compress the second spring 916;

[0081] When the bottom plate 915 moves upward and approaches the limit position, the top block 918 comes into pressing contact with the second wedge-shaped stop block 922, causing the T-shaped belt rod 921 to retract into the wall housing 920. One end of the inner push rod will push into the lock groove 923 to temporarily lock the T-shaped belt rod 921. And during this process, the T-shaped belt rod 921 will hook the side rod 911 and carry the pry bar 909 and the stop lever 910 away from the ratchet lever 917. Finally, the ratchet lever 917 will be in a free state, and the piston member 913 will quickly move downward under the elastic force of the second spring 916. An instantaneous suction force will be generated inside the air cylinder 912. Finally, the gas stagnating in the injection molding body 2 will be drawn out by the first suction pipe 914 under this suction force.

[0082] Embodiment Three:

[0083] Refer to the appendix Figures 10-12 As shown in the figure, on both sides of the injection molding body 2 close to the inside of the exhaust passage 207, acoustic wave cavities 217 are arranged in an array, and inside the injection molding body 2 and above each acoustic wave cavity 217, an air extraction passage 218 and an air supply passage 219 are provided. The ultrasonic bubble removal mechanism 10 includes a second motor 1001 and an ultrasonic generator 1005. The output end of the second motor 1001 is provided with a gearbox 1002, and the output shaft of the second motor 1001 is connected to the input end of the gearbox 1002. The output end of the gearbox 1002 is connected to a crankshaft 1003. The ultrasonic generators 1005 are all slidably assembled inside the corresponding acoustic wave cavities 217, and one end of the ultrasonic generator 1005 extending out of the acoustic wave cavity 217 is fixedly connected to a groove rod 1004. The groove rods 1004 on the same side are jointly connected to the corresponding crankshaft 1003. A straight groove 1006 is provided on the outer wall of the ultrasonic generator 1005, and a row of teeth 1007 is provided at one end of the straight groove 1006 far from the groove rod 1004;

[0084] Refer to the appendix Figures 10-12, inside the injection molding body 2 and below the acoustic cavity 217, a fifth gear 1008, a sixth gear 1009 and a transmission rod 1010 are rotatably installed. The fifth gear 1008 is detachably meshed with the row of teeth 1007. The sixth gear 1009 is meshed with the fifth gear 1008. The sixth gear 1009 and the transmission rod 1010 are meshed and driven through a helical gear set. One end of the transmission rod 1010 away from the sixth gear 1009 is installed with a seventh gear 1012. Near one end of the spiral feeder 205 inside the acoustic cavity 217, an annular plate 1015 is fixedly installed. The side wall of the annular plate 1015 is connected and assembled with a fixed ring 1016 through a rotation center rod distributed in a ring shape. Between the annular plate 1015 and the fixed ring 1016, a sealing block 1017 is rotatably assembled in an annular distribution. And the sealing block 1017 and the rotation center rod form a rotational assembly. A guide rod 1018 is fixedly connected to the side wall of the edge of the sealing block 1017. An active ring body 1011 is movably sleeved on the outer edge of the fixed ring 1016. And on one side of the outer wall of the active ring body 1011, there is a partial tooth 1013 meshed with the seventh gear 1012. On the outer edge of the active ring body 1011, a second inclined slot 1014 for the corresponding guide rod 1018 to penetrate through is arranged in an annular array. When the sealing blocks 1017 converge, they are used to block the acoustic cavity 217;

[0085] Refer to the appendix Figures 10-12 , on the top of the gearbox 1002, an air pump generating body 1019 is installed. And the input shaft of the air pump generating body 1019 is in transmission connection with the output shaft of the second motor 1001. The air intake end of the air pump generating body 1019 is connected with a second suction pipe 1020. And the second suction pipe 1020 is communicated with the air extraction duct 218 on the same side.

[0086] According to the above structure, for the ultrasonic generators 1005 on both sides, when contacting the molten material, the bubbles in the molten plastic can be removed by the generated ultrasonic waves, realizing the ultrasonic degassing technology. When the second motor 1001 works, the crankshaft 1003 can be driven to rotate through the gearbox 1002. There is relative movement between each node of the crankshaft 1003 and the groove rod 1004. Finally, the reciprocating linear motion of each ultrasonic generator 1005 is realized. As Figure 10 shown, each ultrasonic generator 1005 will intermittently contact the molten material in the injection molding body 2, avoiding the situation that a single ultrasonic generator 1005 contacts the molten material for a long time;

[0087] During the movement of the ultrasonic generator 1005 within the exhaust passage 207, a part of the fifth gear 1008 is placed within the straight groove 1006 and meshes with the row of teeth 1007 when the ultrasonic generator 1005 moves to the designated position. As the ultrasonic generator 1005 moves, the fifth gear 1008 will rotate. Through the meshing of the sixth gear 1009 with the fifth gear 1008 and the transmission between the sixth gear 1009 and the transmission rod 1010, the seventh gear 1012 is ultimately driven to rotate. Also, because the seventh gear 1012 meshes with the partial teeth 1013, the movable ring body 1011 rotates by a certain angle. And because the guide rod 1018 at the edge of the sealing block 1017 penetrates the second inclined groove 1014, ultimately all the sealing blocks 1017 rotate simultaneously with the rotation center rod as the center. When the ultrasonic generator 1005 moves along the exhaust passage 207 towards the injection molding body 2, all the sealing blocks 1017 open and provide the hole positions through which the ultrasonic generator 1005 penetrates. When the ultrasonic generator 1005 moves away from the inside of the injection molding body 2 along the exhaust passage 207, all the sealing blocks 1017 close in a timely manner after the ultrasonic generator 1005 withdraws to prevent the molten material from leaking;

[0088] When the second motor 1001 operates, the air pump generating body 1019 is simultaneously driven by the second motor 1001. The working shaft of the air pump generating body 1019 rotates and continuously generates positive and negative pressures inside the air pump generating body 1019. Ultimately, the hot air inside the exhaust passage 207 can be extracted through the second suction pipe 1020, and the outside air will enter the exhaust passage 207 through the air supply passage 219 to cool the ultrasonic generator 1005.

[0089] The working principle of the present invention is: the second motor 1001 operates, drives the crankshaft 1003 to rotate through the gearbox 1002, and each ultrasonic generator 1005 will perform reciprocating linear motion, such as Figure 10As shown in the figure, each ultrasonic generator 1005 will intermittently contact the molten material in the injection molding body 2. When the ultrasonic generator 1005 moves in the exhaust passage 207 and reaches the designated position, the fifth gear 1008 meshes with the row of teeth 1007. As the ultrasonic generator 1005 moves, the fifth gear 1008 will rotate. Through the meshing of the sixth gear 1009 with the fifth gear 1008 and the transmission between the sixth gear 1009 and the transmission rod 1010, the seventh gear 1012 is finally driven to rotate. Also, because the seventh gear 1012 meshes with the partial teeth 1013, the movable ring body 1011 rotates by a certain angle. Also, because the guide rod 1018 on the edge of the sealing block 1017 penetrates the second inclined groove 1014, finally, each sealing block 1017 rotates simultaneously with the rotation center rod as the center; when the ultrasonic generator 1005 moves along the exhaust passage 207 into the injection molding body 2, each sealing block 1017 opens and provides a hole position for the ultrasonic generator 1005 to penetrate. When the ultrasonic generator 1005 moves away from the inside of the injection molding body 2 along the exhaust passage 207, each sealing block 1017 closes in time after the ultrasonic generator 1005 withdraws to prevent the molten material from leaking.

[0090] A resource regeneration production method for recycling waste plastics is as follows:

[0091] Step1: Collection and classification. There are various types of waste plastics, and different types of plastics have different processing properties and uses. Therefore, effective classification of waste plastics is a key step in achieving high-quality recycling and utilization.

[0092] Step2: Cleaning and crushing. Before processing waste plastics, the surface contaminants need to be removed through cleaning. After cleaning, the waste plastics need to be crushed to reduce them to a certain particle size for subsequent melting and reshaping.

[0093] Step3: Melting and pelletizing again. The crushed plastic fragments will undergo a melting process and turn into a liquid or semi-liquid state. The melted plastic is made into small particles, namely recycled plastic pellets, through a pelletizing machine.

[0094] Step4: Particle screening and re-crushing. Before putting the plastic pellets into the barrel of the injection molding machine, the plastic pellets are screened to separate the smaller and larger plastic pellets, and then melted and pelletized again.

[0095] Step5: Injection molding. After the recycled plastic pellets are dried and preheated, they are fed into the barrel of the injection molding machine, heated to a flowing state, and then injected into the mold to form a product with a predetermined shape.

[0096] Step6: Quality and environmental protection considerations. The formed products are subjected to quality inspection, and the strength, burrs, pores, etc. of the finished products are inspected. At the same time, the environmental protection and safety standards need to be met.

[0097] The above are only the preferred embodiments of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the present invention. The structures, devices, and operation methods not specifically described and explained in the present invention are implemented according to the conventional means in the art without special instructions and limitations.

Claims

1. A resource recycling injection molding machine for recycling waste plastics, comprising an injection molding machine table (1), an injection molding body (2) and a molding mechanism (6). The molding mechanism (6) is arranged at one end of the injection molding machine table (1), and the injection molding body (2) is arranged on the surface of the injection molding machine table (1). One end of the injection molding body (2) is connected with a molten material injection pipe (201) for injecting molten material into the internal mold of the molding mechanism (6). A spiral feeder (205) is rotationally assembled inside the injection molding body (2). One end of the injection molding body (2) far away from the molding mechanism (6) is assembled with a rotation mechanism (3) for controlling the rotation of the spiral feeder (205). One end of the rotation mechanism (3) far away from the injection molding body (2) is assembled with a pushing mechanism (4) for pushing the spiral feeder (205). A material adding hopper mechanism (5) for feeding plastic particles is assembled on the surface of the injection molding body (2), and it is characterized in that: One end of the molten material injection pipe (201) close to the injection molding body (2) is provided with an ultrasonic quality inspection mechanism (7) for detecting the density of molten plastic. One end of the molten material injection pipe (201) close to the molding mechanism (6) is provided with a temperature control component (8). At the top of one end of the injection molding body (2) close to the molding mechanism (6), an energy storage and exhaust component (9) is provided. The temperature control component (8) and the energy storage and exhaust component (9) cooperate to regularly discharge the gas inside the injection molding body (2). On the surface of the injection molding machine table (1) and on both sides of the injection molding body (2), an ultrasonic bubble removal mechanism (10) for discharging the bubbles inside the molten material is provided; The ultrasonic quality inspection mechanism (7) includes an ultrasonic densitometer (703) and a receiving device (704). Through the cooperation of the ultrasonic densitometer (703) and the receiving device (704), it is used to directly measure the density of the fluid inside the quality inspection pipe (701); The temperature control component (8) includes a first copper pipe (801) and a copper shell (803). The energy storage and exhaust component (9) includes an air cylinder (912). By utilizing the heat of the molten plastic and the separable structure of the copper shell (803) and the first copper pipe (801), the air cylinder (912) has an energy storage process. The instantaneous suction force generated when the energy storage of the air cylinder (912) reaches the limit is used to extract the gas existing inside the injection molding body (2); The ultrasonic bubble removal mechanism (10) includes an ultrasonic generator (1005). Through the combination of the ultrasonic generator (1005) that contacts the molten material intermittently, it is used to remove the bubbles in the molten plastic.

2. The resource recycling injection molding machine for recycling waste plastics according to claim 1, wherein: Inside the injection molding body (2), a heating mechanism (203) for heating plastic particles is fixedly assembled. Inside one end of the injection molding body (2) close to the molding mechanism (6), a stagnation cavity (204) is opened. At one end of the screw feeder (205) located inside the stagnation cavity (204), a conical plug (206) is integrally provided. At the top of one end of the injection molding body (2) close to the stagnation cavity (204), an exhaust duct (207) for discharging gas is opened.

3. The resource recycling injection molding machine for recycling waste plastics according to claim 2, characterized in that: At the connection of the molten material injection pipe (201) corresponding to the ultrasonic quality inspection mechanism (7), a flow dividing valve (202) for changing the flow direction of the molten material is provided. Inside the flow dividing valve (202), a spherical valve core (208) is rotatably assembled. One end of the shaft body of the spherical valve core (208) extending to the bottom of the flow dividing valve (202) is provided with a first helical gear (211). On the outer wall of the injection molding body (2) and below the flow dividing valve (202), a first motor (212) is fixedly installed. The output end of the first motor (212) is provided with a second helical gear (213) meshing with the first helical gear (211). At the top of the flow dividing valve (202), a branch pipe (214) is integrally provided. Inside the branch pipe (214), fan-shaped through holes two (215) are symmetrically penetrated. At the top of the spherical valve core (208), a flow dividing pipe (209) is integrally provided. The flow dividing pipe (209) is placed inside the branch pipe (214). Inside the flow dividing pipe (209), fan-shaped through holes one (210) are symmetrically penetrated; The ultrasonic quality inspection mechanism (7) includes a quality inspection pipe (701) communicated with the branch pipe (214). One side of the outer wall of the quality inspection pipe (701) is fixedly installed with an ultrasonic densitometer (703). The other side of the outer wall of the quality inspection pipe (701) is fixedly installed with a receiving device (704) and a display (705). The ultrasonic densitometer (703) and the receiving device (704) cooperate to detect the density of the molten fluid. The top of the quality inspection pipe (701) is fixedly connected with a material extraction pipe (702). The material extraction pipe (702) is in an inverted U shape and the end is connected with a material extraction cylinder (706) for collecting molten material samples.

4. The resource recycling injection molding machine for recycling waste plastics according to claim 3, wherein: A heat conduction cavity (216) is arranged inside one end of the injection molding body (2) close to the molding mechanism (6). The temperature control component (8) includes a first copper pipe (801), a second copper pipe (802) and a water storage tank (807). The first copper pipe (801) is installed inside the heat conduction cavity (216). The second copper pipe (802) is arranged above the first copper pipe (801). Fins are arranged on the side walls of the first copper pipe (801) and the second copper pipe (802) close to each other. A copper shell (803) for guiding heat from the first copper pipe (801) to the second copper pipe (802) is slidably assembled between the first copper pipe (801) and the second copper pipe (802) through the fins. Groove plates (805) are arranged on both sides of the fins at the bottom of the second copper pipe (802). Wall rods (804) penetrating through the groove plates (805) are fixedly connected to the outer walls on both sides of the copper shell (803). A water pipe (806) is connected to the bottom of the water storage tank (807). The water pipe (806) is wound around the outside of the second copper pipe (802). One end of the water pipe (806) away from the water storage tank (807) is connected with an elastic air bag (810). The elastic air bag (810) is placed on one side of the top of the water storage tank (807); One side of the water storage tank (807) is fixedly installed with a hook frame (809), and the elastic airbag (810) is fixedly installed inside the hook frame (809). A first spring (811) is connected between the top of the elastic airbag (810) and the inner wall of the top of the hook frame (809). An air hole for exhausting air is opened at the top of the elastic airbag (810), and sliders (813) are symmetrically and dampingly slidably assembled at the top of the elastic airbag (810). Flap valves (812) for blocking the air holes are arranged on the opposite sides of the two sliders (813). A first inclined groove (814) is formed on the surface of the slider (813). Extension rods (816) are integrally arranged on the opposite sides of the two sliders (813). A top rod (815) for inserting into the corresponding first inclined groove (814) is fixedly arranged on the inner wall of the top of the hook frame (809). Wedge-shaped stoppers one (817) for squeezing and contacting the ends of the corresponding extension rods (816) are fixedly arranged on the inner walls of both sides of the hook frame (809). A connecting plate is fixedly arranged on the top of the elastic airbag (810). Arm rods one (818) and arm rods two (819) are fixedly connected to both ends of the connecting plate. The bottom end of the arm rod one (818) is connected to the end of the corresponding wall rod (804). A first toothed rod (820) is integrally arranged at the end of the arm rod two (819).

5. A resource recycling injection molding machine for recycling waste plastics according to claim 4, characterized in that: The energy storage and exhaust assembly (9) includes a wall frame (901), a lever (908) and an air cylinder (912). The two wall frames (901) are fixedly installed on the side wall of the injection molding machine body (2) close to the molding mechanism (6). A first gear (902) meshing with the first toothed rod (820) is rotatably installed on the top of the wall frame (901). A second gear (903) is coaxially and fixedly assembled inside the first gear (902). A third gear (904) meshing with the second gear (903) is rotatably assembled on the top of the wall frame (901). A fourth gear (905) is coaxially and fixedly assembled on one side of the first gear (902). A second toothed rod (906) meshing with the fourth gear (905) is slidably assembled in a lifting manner on the top of the wall frame (901). A bracket (907) is fixedly installed on the top of one end of the injection molding machine body (2). Two levers (908) are rotatably assembled inside the bracket (907). The two second toothed rods (906) are connected to the ends of the levers (908) far from the transfer point. A crowbar (909) is elastically and telescopically assembled at the other end of the lever (908) close to the transfer point. A stop rod (910) is elastically and rotatably assembled on the inner walls of both sides of the bracket (907) corresponding to the lower part of the crowbar (909) through a coil spring. Side rods (911) are fixedly connected to the outer walls of the same side of the crowbar (909) and the stop rod (910).

6. The resource recycling injection molding machine for recycling waste plastics according to claim 5, wherein: The air cylinder (912) is fixedly installed on the top of the injection molding machine body (2). A first suction pipe (914) communicating with the exhaust passage (207) is fixedly connected to the top of the air cylinder (912). A piston member (913) is telescopically assembled inside the air cylinder (912). The bottom end of the piston member (913) extending out of the air cylinder (912) is fixedly connected to a bottom plate (915). The bottom plate (915) and the air cylinder (912) are slidably assembled through a guide rod and a guide sleeve. A second spring (916) is connected between the bottom plate (915) and the outer wall of the air cylinder (912). Both ends of the second spring (916) are fixedly connected to a ratchet rod (917). Top blocks (918) are fixedly arranged on both ends of the second spring (916) and on the outer sides of the ratchet rods (917). Pressure rods (919) are fixedly connected to the outer walls of the two ratchet rods (917). Wall shells (920) are fixedly installed on the outer walls on both sides of the bracket (907). A T-shaped belt rod (921) for temporarily hooking the side rod (911) is elastically telescopically assembled at one end of the wall shell (920) close to the ratchet rod (917). A second wedge-shaped stop block (922) for squeezing and contacting the top block (918) is integrally arranged on the outer wall of the T-shaped belt rod (921) away from the wall shell (920). A locking groove (923) is formed on the bottom side of the middle of the horizontal end of the T-shaped belt rod (921). An inner ejector rod for temporarily entering the locking groove (923) is elastically telescopically assembled at the bottom of the wall shell (920). A through rod (924) penetrating the side wall of the wall shell (920) is fixedly connected to the side wall of the inner ejector rod.

7. A resource recycling injection molding machine for recycling waste plastics according to claim 6, characterized in that: Sound wave cavities (217) are arrayed on both sides inside the injection molding machine body (2) close to the exhaust passage (207). An air extraction passage (218) and an air supply passage (219) are arranged above each sound wave cavity (217) inside the injection molding machine body (2). The ultrasonic bubble removal mechanism (10) includes a second motor (1001) and an ultrasonic generator (1005). The output end of the second motor (1001) is provided with a gearbox (1002). The output shaft of the second motor (1001) is connected to the input end of the gearbox (1002). The output end of the gearbox (1002) is connected to a crankshaft (1003). The ultrasonic generators (1005) are all slidably assembled inside the corresponding sound wave cavities (217). One end of the ultrasonic generator (1005) extending out of the sound wave cavity (217) is fixedly connected to a groove rod (1004). The groove rods (1004) on the same side are jointly connected to the corresponding crankshaft (1003). A straight groove (1006) is formed on the outer wall of the ultrasonic generator (1005). A row of teeth (1007) is arranged at one end of the straight groove (1006) away from the groove rod (1004).

8. The resource recycling injection molding machine for recycling waste plastics according to claim 7, characterized in that: Gear 5 (1008), gear 6 (1009) and a transmission rod (1010) are rotatably installed inside the injection molding machine body (2) and below the sonic cavity (217); the gear 5 (1008) is detachably meshed with the row of teeth (1007); the gear 6 (1009) is meshed with the gear 5 (1008); the gear 6 (1009) and the transmission rod (1010) are meshed and transmitted via a helical gear set; a gear 7 (1012) is installed at one end of the transmission rod (1010) away from the gear 6 (1009); a ring plate (1015) is fixedly installed at one end of the sonic cavity (217) close to the screw feeder (205); the side wall of the ring plate (1015) is connected to the transmission rod via a circularly distributed rotating rod. A fixed ring (1016) is provided in the connecting assembly, a sealing block (1017) is provided in the annular distributed rotating assembly between the ring plate (1015) and the fixed ring (1016), and the sealing block (1017) and the rotating rod constitute a rotating assembly, the side wall of the edge of the sealing block (1017) is fixedly connected with a guide rod (1018), the outer edge of the fixed ring (1016) is movably sleeved with a movable ring body (1011), and one side of the outer wall of the movable ring body (1011) is provided with a local gear tooth (1013) meshing with a gear seven (1012), the outer edge of the movable ring body (1011) is provided with a circular array of inclined grooves two (1014) for the corresponding guide rod (1018) to pass through, and the sealing block (1017) is used to block the sound wave cavity (217) when it is aggregated.

9. The resource recycling injection molding machine for recycling waste plastics according to claim 8, characterized in that: An air pump generator body (1019) is installed on the top of the gearbox (1002), and the input shaft of the air pump generator body (1019) is drivingly connected to the output shaft of the second motor (1001), and the air inlet end of the air pump generator body (1019) is connected to the second suction pipe (1020), and the second suction pipe (1020) is connected to the exhaust duct (218) on the same side.

10. A production method of a resource recycling injection molding machine for recycling waste plastics, using the resource recycling injection molding machine for recycling waste plastics according to any one of claims 1-9, characterized in that, The specific steps are as follows: Step 1: Collection and classification. There are many types of waste plastics. Different types of plastics have different processing properties and uses. Therefore, effective classification of waste plastics is a key step in achieving high-quality recycling. Step 2: Cleaning and crushing. Before waste plastics are processed, they need to be cleaned to remove surface pollutants. After cleaning, the waste plastics need to be crushed to reduce them to a certain particle size for subsequent melting and reshaping. Step 3: Melting and re-granulation. The broken plastic fragments will go through a melting process and turn into a liquid or semi-liquid state. The melted plastic will be made into small particles through a granulator, i.e. recycled plastic particles. Step 4: Particle screening and re-crushing. Before feeding into the barrel of the injection molding machine, the plastic particles are screened to separate the smaller and larger plastic particles, and then re-melted and re-granulated; Step 5: Injection molding: After being dried and preheated, the recycled plastic particles are fed into the barrel of the injection molding machine, heated to a fluid state, and then injected into the mold to form a product of a predetermined shape; Step 6: Consider quality and environmental protection, conduct quality inspections on the formed products, inspect the strength, burrs, pores, etc. of the finished products, and at the same time meet the environmental protection and safety standards.

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