Injection molding machine utilizing plastic waste for processing

Abstract

The invention discloses an injection molding machine for processing by utilizing plastic waste, and relates to the technical field of plastic waste recycling, the injection molding machine comprises a base and a rotary table rotationally connected to the top of the base, and further comprises an injection molding mechanism, and the injection molding mechanism comprises a lower mold and an upper mold; the opening and closing mechanism is used for driving the upper mold to move to be combined with the lower mold, driving the upper mold and the lower mold to move downwards to the interior of the base, and driving the upper mold to move upwards to be separated from the lower mold; the cooling mechanism is used for synchronously cooling the upper mold and the lower mold which move downwards into the base; according to the injection molding machine for processing by utilizing the plastic waste, through automatic mold closing, automatic material injection, automatic cooling and automatic demolding treatment of the upper mold and the lower mold, batch production of plastic products is realized, and during batch production of the plastic products, injection molding materials in the upper mold and the lower mold can be synchronously cooled; the problem that in the prior art, only the lower mold can be cooled, and consequently the forming speeds of the upper mold and the lower mold are inconsistent is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of plastic waste recycling and utilization, and particularly relates to an injection molding machine processed from plastic waste. Background Art

[0002] In the production process of plastic waste recycling products, an injection molding machine must be used for processing. After plastic waste is recycled, it is crushed and granulated, and then the plastic particles are put into the barrel for melting. Then, the molten plastic liquid is injected under high pressure, so that the molten liquid enters the mold cavity and cools to form a new plastic product.

[0003] In the patent with the publication number CN218256547U, an injection molding device for plastic production is disclosed. The injection molding device for plastic production includes a molding component and a feeding component. The molding component includes: a support part, a feeding part, a displacement part, and an injection part. The injection part is arranged between the support part and the feeding part, and the displacement part is arranged on the support part, the feeding part, and the injection part; The above-mentioned related technologies have the following defects: it can only inject materials, cool, and demold the mold one by one, and thus can only realize the production of plastic products one by one, unable to realize the batch production of plastic products, which affects the efficiency of plastic waste recycling and utilization. Moreover, in the prior art, when cooling the plastic injected into the mold, only the lower mold can be cooled, resulting in inconsistent molding speeds of the upper and lower molds and affecting the overall molding speed of the plastic injected into the upper and lower molds. Summary of the Invention

[0004] The purpose of the present invention is to provide an injection molding machine processed from plastic waste to solve the above deficiencies in the prior art.

[0005] To achieve the above purpose, the present invention provides the following technical solution: An injection molding machine processed from plastic waste includes a base and a turntable rotatably connected to the top of the base, and further includes: An injection mechanism, which has multiple ones and is installed on the turntable. The injection mechanism includes a lower mold installed inside the turntable and an upper mold arranged above the lower mold; An opening and closing mechanism, which is connected to the injection mechanism and is used to drive the upper mold to move and merge with the lower mold, and drive the upper mold and the lower mold to move downward into the base together, and is also used to drive the upper mold to move upward and separate from the lower mold; A cooling mechanism, which is arranged inside the base and is used to synchronously cool the upper mold and the lower mold that move downward into the base; A demolding mechanism, which is arranged inside the base and is used to separate the formed plastic product inside the lower mold from it after the upper mold and the lower mold are separated; The driving mechanism is installed inside the base and is used to drive the turntable, the cooling mechanism and the demolding mechanism to operate respectively.

[0006] Further, a mold cavity is formed inside the turntable, the lower mold is slidably connected inside the mold cavity, sliders are fixedly connected to the tops of both sides of the lower mold, sliding grooves communicating with the mold cavity are provided on both sides of the mold cavity, and the two sliders are respectively slidably connected inside the two sliding grooves; A feeding pipe is rotatably connected to the top of the upper mold, and the upper mold is connected to the opening and closing mechanism.

[0007] Further, the opening and closing mechanism includes a driven shaft rotatably connected inside the turntable, a first reciprocating screw fixedly sleeved outside the driven shaft, and a lifting block screwed outside the first reciprocating screw; A bracket is fixedly connected to the top of the turntable, the bracket is of an L-shaped structure, and the top end of the driven shaft is rotatably connected to the top of the bracket; One end of the lifting block is slidably connected to the outer wall of the bracket; The upper mold is fixedly connected to the bottom of the lifting block through a plurality of struts.

[0008] Further, hidden grooves communicating with the two sliding grooves are provided at the bottoms of the two sliding grooves, first springs are fixedly connected inside the two hidden grooves, and the top ends of the two first springs are respectively fixedly connected to the bottoms of the two sliders.

[0009] Further, a first gear is fixedly connected to the bottom end of the driven shaft, a first tooth arc is fixedly connected to the inner wall of one side of the base, and a second tooth arc is fixedly connected to the inner wall of the other side of the base; The first gear meshes and drives with the first tooth arc and the second tooth arc in turn during circumferential movement.

[0010] Further, the cooling mechanism includes a cooling cylinder arranged inside the base, a circulation passage formed inside the cooling cylinder, and a heat conduction groove formed outside the mold cavity; Liquid inlet pipes and liquid outlet pipes are respectively installed on both sides of the cooling cylinder, and the liquid inlet pipes and the liquid outlet pipes are both connected to the circulation passage; An adaptation groove is provided on one side of the heat conduction groove, and the adaptation groove is used to provide space for the liquid inlet pipe to enter the inside of the turntable; The cooling cylinder is connected to the driving mechanism.

[0011] Further, the demolding mechanism includes a plurality of ejector rods installed on the inner wall of the bottom of the lower mold, a connecting plate fixedly connected to the bottom ends of the plurality of ejector rods, and a second spring fixedly connected to the top of the connecting plate; The top end of the second spring is fixedly connected to the bottom of the lower mold; The connecting plate cooperates with the driving mechanism.

[0012] Further, the driving mechanism includes a motor installed on the inner wall of the bottom of the base, a second gear fixedly sleeved outside the output shaft of the motor, and a first driving shaft rotatably connected to the inner wall of the bottom of the base; A first one-way gear is installed outside the first driving shaft. The first one-way gear meshes with the second gear, and the top end of the first driving shaft is fixedly connected to the center of the bottom of the turntable.

[0013] Further, the driving mechanism further includes a second driving shaft rotatably connected to the inner wall of the bottom of the base, a second reciprocating screw fixedly sleeved outside the second driving shaft, and a lifting frame screwed outside the second reciprocating screw; The top of the lifting frame is fixedly connected with a first lifting rod, and the top of the first lifting rod is fixedly connected with the bottom of the cooling cylinder; A plurality of guide rods are also fixedly connected to the inner wall of the bottom of the base, and the lifting frame is also slidably sleeved outside the plurality of guide rods; A second one-way gear is installed outside the second driving shaft. The second one-way gear meshes with the second gear.

[0014] Further, the driving mechanism further includes a second lifting rod fixedly connected to the top of the lifting frame and a driving plate fixedly connected to the top end of the second lifting rod.

[0015] Compared with the prior art, an injection molding machine using plastic waste provided by the present invention has the following beneficial effects: 1. Through the automatic mold closing, automatic feeding, automatic cooling, and automatic demolding of the upper and lower molds, the batch production of plastic products is realized, solving the problem in the prior art that only one plastic product can be produced one by one, and improving the efficiency of plastic waste recycling; 2. When batch-producing plastic products, the injection plastics inside the upper and lower molds can be synchronously cooled, thereby synchronously increasing the cooling and forming speed of the injection plastics inside the upper and lower molds, and solving the problem in the prior art that only the lower mold can be cooled, resulting in inconsistent forming speeds of the upper and lower molds. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments recorded in the present invention. For those of ordinary skill in the art, other drawings can also be obtained based on these drawings.

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the internal structure of the base of the present invention; Figure 3Schematic diagram of the internal structure of the turntable of the present invention; Figure 4 For the present invention Figure 3 Schematic diagram of the enlarged structure at position A in the present invention; Figure 5 Schematic diagram of the partial structure of the turntable and the drive mechanism of the present invention; Figure 6 Schematic diagram of the opening and closing mechanism structure of the present invention; Figure 7 Schematic diagram of the drive mechanism and the cooling mechanism structure of the present invention; Figure 8 Schematic cross-sectional view of the cooling mechanism structure of the present invention.

[0018] Explanation of reference numerals: 1. Base; 2. Turntable; 3. Lower mold; 4. Upper mold; 5. Slide block; 6. Slide groove; 7. Injection pipe; 8. Driven shaft; 9. First reciprocating screw; 10. Lifting block; 11. Bracket; 12. First gear; 13. First tooth arc; 14. Second tooth arc; 15. Hidden groove; 16. First spring; 17. Cooling cylinder; 18. Circulation path; 19. Heat conduction groove; 20. Liquid inlet pipe; 21. Liquid outlet pipe; 22. Adaptation groove; 23. Ejector rod; 24. Connecting plate; 25. Second spring; 26. Motor; 27. Second gear; 28. First drive shaft; 29. First one-way gear; 30. Second drive shaft; 31. Second reciprocating screw; 32. Lifting frame; 33. First lifting rod; 34. Guide rod; 35. Second one-way gear; 36. Second lifting rod; 37. Drive plate. Detailed implementation manners

[0019] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further introduced in detail below in conjunction with the accompanying drawings.

[0020] Embodiment: Please refer to Figure 1 - Figure 8 , an injection molding machine using plastic waste for processing, includes a base 1 and a turntable 2 rotatably connected to the top of the base 1, and further includes: The injection molding mechanism, there are multiple of them and they are installed on the turntable 2. The injection molding mechanism includes a lower mold 3 installed inside the turntable 2 and an upper mold 4 arranged above the lower mold 3. A mold cavity is formed inside the turntable 2, and the lower mold 3 is slidably connected inside the mold cavity. In this embodiment, there are four upper molds 4, lower molds 3 and mold cavities. At the top of both sides of the lower mold 3, sliders 5 are fixedly connected. On both sides of the mold cavity, chutes 6 connected to it are provided, and the two sliders 5 are respectively slidably connected inside the two chutes 6; The top of the upper mold 4 is rotatably connected with a feeding pipe 7, and the feeding pipe 7 is a flexible pipe. The upper mold 4 is connected to the opening and closing mechanism. A limiting ring is provided on the top of the turntable 2 to limit the top of the lower mold 3 so that the upper edge of the lower mold 3 does not exceed the upper edge of the turntable 2; During the process that the turntable 2 rotates a quarter of a circle, the upper mold 4 will move downward to merge with the lower mold 3 and drive the lower mold 3 to move downward synchronously. The slider 5 will move downward along the inner wall of the chute 6 until the bottom of the slider 5 abuts against the bottom of the chute 6. After the turntable 2 stops, the cavity between the upper mold 4 and the lower mold 3 is filled with injection molding material through the feeding pipe 7.

[0021] The opening and closing mechanism, which is connected to the injection molding mechanism, is used to drive the upper mold 4 to move and merge with the lower mold 3, and drive the upper mold 4 and the lower mold 3 to move downward into the base 1 together. It is also used to drive the upper mold 4 to move upward to separate from the lower mold 3. The opening and closing mechanism includes a driven shaft 8 rotatably connected inside the turntable 2, a first reciprocating screw 9 fixedly sleeved outside the driven shaft 8, and a lifting block 10 screwed outside the first reciprocating screw 9; A bracket 11 is fixedly connected to the top of the turntable 2, and the bracket 11 is of an L-shaped structure. The top of the driven shaft 8 is rotatably connected to the top of the bracket 11; One end of the lifting block 10 is slidably connected to the outer wall of the bracket 11; The upper mold 4 is fixedly connected to the bottom of the lifting block 10 through multiple columns. At the bottom of both chutes 6, hidden slots 15 connected to them are provided. Inside the two hidden slots 15, first springs 16 are fixedly connected. The tops of the two first springs 16 are respectively fixedly connected to the bottoms of the two sliders 5. The bottom end of the driven shaft 8 is fixedly connected with a first gear 12. A first tooth arc 13 is fixedly connected to the inner wall of one side of the base 1, and a second tooth arc 14 is fixedly connected to the inner wall of the other side of the base 1; The first gear 12 meshes and drives with the first tooth arc 13 and the second tooth arc 14 in turn during circumferential movement; After the turntable 2 is driven by the driving mechanism to rotate a quarter of a turn and then stop, the driven shaft 8 and the first gear 12 are driven to perform circumferential movement. During this process, the first gear 12 will engage with the first tooth arc 13, driving the driven shaft 8 and the first reciprocating screw 9 to rotate, driving the lifting block 10 to move down from the top end of the first reciprocating screw 9 to its bottom end, thereby driving the upper mold 4 to move downward synchronously, so that the upper mold 4 first abuts against the lower mold 3 and drives the lower mold 3 to move downward. The first spring 16 is compressed until the bottom of the slider 5 abuts against the bottom of the chute 6, and the upper mold 4 and the lower mold 3 are completely combined together. At this time, the first spring 16 is compressed inside the hidden groove 15; After the injection is completed, the turntable 2 is driven by the driving mechanism to rotate a quarter of a turn and then stop, and the injection plastics in the upper mold 4 and the lower mold 3 are cooled by the cooling mechanism; After the injection plastics in the upper mold 4 and the lower mold 3 are cooled and formed, the driving mechanism continues to drive the turntable 2 to rotate a quarter of a turn and then stop. During this process, the first gear 12 will engage with the second tooth arc 14 and drive the driven shaft 8 and the first reciprocating screw 9 to continue rotating, thereby driving the lifting block 10 to move up from the bottom end of the first reciprocating screw 9 to its top end, thereby driving the upper mold 4 to move upward and reset. At the same time, through the rebounding force of the first spring 16 and the limiting effect of the limiting ring, the lower mold 3 is driven to move up and reset.

[0022] The cooling mechanism is arranged inside the base 1 and is used for synchronously cooling the upper mold 4 and the lower mold 3 that move down into the base 1. The cooling mechanism includes a cooling cylinder 17 arranged inside the base 1, a circulation passage 18 opened inside the cooling cylinder 17, and a heat conduction groove 19 opened outside the mold cavity; liquid inlet pipes 20 and liquid outlet pipes 21 are respectively installed on both sides of the cooling cylinder 17, and both the liquid inlet pipes 20 and the liquid outlet pipes 21 are connected to the circulation passage 18, and both the liquid inlet pipes 20 and the liquid outlet pipes 21 are flexible hoses; an adaptation groove 22 is provided on one side of the heat conduction groove 19, and the adaptation groove 22 is used to provide space for the liquid inlet pipe 20 to enter the turntable 2; the cooling cylinder 17 is connected to the driving mechanism; After the injection is completed, the turntable 2 is driven by the driving mechanism to rotate a quarter of a turn and then stop. At this time, the lower mold 3 and the upper mold 4 are located directly above the cooling cylinder 17. The driving mechanism drives the cooling cylinder 17 to move up and insert into the heat conduction groove 19. The outer wall of the cooling cylinder 17 is completely attached to the inner wall of the heat conduction groove 19, which is convenient for heat exchange treatment of the upper mold 4 inside the heat conduction groove 19. The inner wall of the cooling cylinder 17 is completely attached to the outer wall of the lower mold 3. The coolant is injected into the circulation passage 18 through the circulating water supply device and the liquid inlet pipe 20, and the coolant is discharged through the liquid outlet pipe 21, thereby realizing synchronous cooling treatment of the upper mold 4 and the lower mold 3, and further synchronously improving the cooling and forming speed of the injection plastics inside the upper mold 4 and the lower mold 3, and solving the problem in the prior art that only the lower mold 3 can be cooled, resulting in inconsistent forming speeds of the upper and lower molds; After cooling, the driving mechanism drives the cooling cylinder 17 to move downward and reset.

[0023] Demolding mechanism, which is arranged inside the base 1 and is used to separate the molded plastic product inside the lower mold 3 from it after the upper mold 4 and the lower mold 3 are separated. The demolding mechanism includes a plurality of ejector rods 23 installed on the inner wall of the bottom of the lower mold 3, a connecting plate 24 fixedly connected to the bottom ends of the plurality of ejector rods 23, and a second spring 25 fixedly connected to the top of the connecting plate 24; the top end of the second spring 25 is fixedly connected to the bottom of the lower mold 3; the connecting plate 24 cooperates with the driving mechanism; After the plastic is injected and cooled and formed inside the upper and lower molds, the driving mechanism continues to drive the turntable 2 to rotate a quarter of a circle and then stop. At this time, the lower mold 3 and the connecting plate 24 below it are located directly above the driving plate 37. The driving mechanism drives the driving plate 37 to move upward. When the driving plate 37 abuts against the connecting plate 24, since the top of the lower mold 3 is in a limited position state, it drives the connecting plate 24 to move upward synchronously, the second spring 25 is compressed, and each ejector rod 23 moves upward synchronously, pushing the molded plastic product inside the lower mold 3 upward and separating it from the lower mold 3, achieving the effect of automatic demolding. The staff manually takes out the demolded plastic product; After the plastic product is pushed upward, the driving mechanism drives the driving plate 37 to move downward and reset. During this process, through the rebound force of the second spring 25, the connecting plate 24 and each ejector rod 23 are driven to move downward and reset.

[0024] Driving mechanism, which is installed inside the base 1 and is used to drive the turntable 2, the cooling mechanism and the demolding mechanism to operate respectively. The driving mechanism includes a motor 26 installed on the inner wall of the bottom of the base 1, a second gear 27 fixedly sleeved on the output shaft of the motor 26, and a first driving shaft 28 rotatably connected to the inner wall of the bottom of the base 1; a first one-way gear 29 is installed on the outside of the first driving shaft 28, the first one-way gear 29 meshes with the second gear 27, and the top end of the first driving shaft 28 is fixedly connected to the center of the bottom of the turntable 2; By controlling the motor 26 to drive the second gear 27 to rotate forward, through the meshing action between the second gear 27 and the first one-way gear 29, the first driving shaft 28 is driven to rotate. At this time, the second one-way gear 35 also rotates accordingly, but the second driving shaft 30 does not rotate accordingly; Among them, when the motor 26 drives the first driving shaft 28 to rotate, the first driving shaft 28 is driven to stop for a period of time every quarter of a turn, thereby driving the turntable 2 to stop for a period of time every quarter of a turn.

[0025] The driving mechanism further includes a second driving shaft 30 rotatably connected to the inner wall of the bottom of the base 1, a second reciprocating screw 31 fixedly sleeved on the outside of the second driving shaft 30, and a lifting frame 32 screwed on the outside of the second reciprocating screw 31; a first lifting rod 33 is fixedly connected to the top of the lifting frame 32, and the top of the first lifting rod 33 is fixedly connected to the bottom of the cooling cylinder 17; a plurality of guide rods 34 are also fixedly connected to the inner wall of the bottom of the base 1, and the lifting frame 32 is also slidably sleeved on the outside of the plurality of guide rods 34; a second one-way gear 35 is installed on the outside of the second driving shaft 30, the second one-way gear 35 meshes with the second gear 27, and the driving mechanism further includes a second lifting rod 36 fixedly connected to the top of the lifting frame 32 and a driving plate 37 fixedly connected to the top end of the second lifting rod 36; By controlling the motor 26 to drive the second gear 27 to reverse, the second driving shaft 30 is driven to rotate through the meshing action between the second gear 27 and the second one-way gear 35. At this time, the first one-way gear 29 also rotates accordingly, but the first driving shaft 28 does not rotate accordingly. When the second driving shaft 30 rotates, it drives the second reciprocating screw 31 to rotate synchronously, thereby driving the lifting frame 32 to move up from the bottom end of the second reciprocating screw 31 to its top end. During this process, the cooling cylinder 17 is driven to move upward synchronously through the first lifting rod 33, and the driving plate 37 is driven to move upward synchronously through the second lifting rod 37; After the injection-molded plastic is cooled and formed and the formed plastic product is demolded, by controlling the motor 26 to drive the second reciprocating screw 31 to continue rotating, the lifting frame 32 is driven to move down from the top end of the second reciprocating screw 31 to its bottom end. During this process, the cooling cylinder 17 is driven to move downward synchronously and reset through the first lifting rod 33, and the driving plate 37 is driven to move downward synchronously and reset through the second lifting rod 37.

[0026] Working principle: During use, the turntable 2 is driven by the driving mechanism to rotate a quarter of a turn and then stop, thereby driving the driven shaft 8 and the first gear 12 to perform circumferential movement. In this process, the first gear 12 will engage with the first tooth arc 13, driving the driven shaft 8 and the first reciprocating screw 9 to rotate, driving the lifting block 10 to move down from the top end of the first reciprocating screw 9 to its bottom end, thereby driving the upper mold 4 to move downward synchronously, so that the upper mold 4 first abuts against the lower mold 3 and drives the lower mold 3 to move downward. The first spring 16 is compressed until the bottom of the slider 5 abuts against the bottom of the chute 6, and the upper mold 4 and the lower mold 3 are completely combined together. After the turntable 2 stops, the cavity between the upper mold 4 and the lower mold 3 is filled with injection plastic through the injection pipe 7. After the injection is completed, the turntable 2 is driven by the driving mechanism to rotate a quarter of a turn and then stop. At this time, the lower mold 3 and the upper mold 4 are located directly above the cooling cylinder 17. The cooling cylinder 17 is driven by the driving mechanism to move upward and insert into the inside of the heat conduction groove 19. The outer wall of the cooling cylinder 17 is completely attached to the inner wall of the heat conduction groove 19, which is convenient for heat exchange treatment of the upper mold 4 inside the heat conduction groove 19. The inner wall of the cooling cylinder 17 is completely attached to the outer wall of the lower mold 3. The coolant is injected into the circulation path 18 through the circulating water supply device and the liquid inlet pipe 20, and the coolant is discharged through the liquid outlet pipe 21, thereby realizing synchronous cooling treatment of the upper mold 4 and the lower mold 3, and further synchronously improving the cooling and molding speed of the injection plastic inside the upper mold 4 and the lower mold 3, solving the problem in the prior art that only the lower mold 3 can be cooled, resulting in inconsistent molding speeds of the upper and lower molds. After cooling, the cooling cylinder 17 is driven by the driving mechanism to move downward and reset, and then the turntable 2 is driven by the driving mechanism to rotate a quarter of a turn and then stop. At this time, the lower mold 3 and the connecting plate 24 below it are located directly above the driving plate 37. The driving plate 37 is driven by the driving mechanism to move upward. When the driving plate 37 abuts against the connecting plate 24, since the top of the lower mold 3 is in a limited state, the connecting plate 24 is driven to move upward synchronously. The second spring 25 is compressed, and each ejector rod 23 moves upward synchronously, pushing the plastic product formed inside the lower mold 3 upward and separating it from the lower mold 3, achieving the effect of automatic demoulding. The staff manually takes out the demoulded plastic product, and so on in a cycle, and plastic products can be produced in batches.

[0027] It should be noted that the device structure and drawings of the present invention mainly describe the principle of the present invention. On the basis of the technical design principle, the settings of the power mechanism, power supply system, control system, etc. of the device are not fully described clearly. However, on the premise that those skilled in the art understand the principle of the above invention, the specific details of its power mechanism, power supply system, and control system can be clearly obtained. The control method of the application document is to automatically control through a controller, and the control circuit of the controller can be realized by simple programming by those skilled in the art; only some exemplary embodiments of the present invention are described above by way of illustration. Undoubtedly, for those of ordinary skill in the art, without departing from the spirit and scope of the present invention, the described embodiments can be modified in various different ways. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. An injection molding machine processed from plastic waste, comprising a base (1) and a turntable (2) rotatably connected to the top of the base (1), characterized in that, It further includes: An injection molding mechanism, which has multiple ones and is installed on the turntable (2). The injection molding mechanism includes a lower mold (3) installed inside the turntable (2) and an upper mold (4) arranged above the lower mold (3); An opening and closing mechanism, which is connected to the injection molding mechanism and is used to drive the upper mold (4) to move and merge with the lower mold (3), and drive the upper mold (4) and the lower mold (3) to move downward into the base (1) together. It is also used to drive the upper mold (4) to move upward and separate from the lower mold (3); A cooling mechanism, which is arranged inside the base (1) and is used to synchronously cool the upper mold (4) and the lower mold (3) that move downward into the base (1); A demolding mechanism, which is arranged inside the base (1) and is used to separate the molded plastic product inside the lower mold (3) from it after the upper mold (4) and the lower mold (3) are separated; A driving mechanism, which is installed inside the base (1) and is used to drive the turntable (2), the cooling mechanism and the demolding mechanism to operate respectively.

2. An injection molding machine processed from plastic waste according to claim 1, characterized in that, A mold groove is formed inside the turntable (2), the lower mold (3) is slidably connected inside the mold groove, sliders (5) are fixedly connected to the tops on both sides of the lower mold (3), and sliding grooves (6) connected to it are arranged on both sides of the mold groove. The two sliders (5) are respectively slidably connected inside the two sliding grooves (6); A feeding pipe (7) is rotatably connected to the top of the upper mold (4), and the upper mold (4) is connected to the opening and closing mechanism.

3. An injection molding machine processed from plastic waste according to claim 2, characterized in that, The opening and closing mechanism includes a driven shaft (8) rotatably connected inside the turntable (2), a first reciprocating screw (9) fixedly sleeved outside the driven shaft (8), and a lifting block (10) screwed outside the first reciprocating screw (9); A bracket (11) is fixedly connected to the top of the turntable (2), the bracket (11) is of an L-shaped structure, and the top end of the driven shaft (8) is rotatably connected to the top of the bracket (11); One end of the lifting block (10) is slidably connected to the outer wall of the bracket (11); The upper mold (4) is fixedly connected to the bottom of the lifting block (10) through a plurality of struts.

4. An injection molding machine processed from plastic waste according to claim 3, characterized in that, Hidden grooves (15) connected to them are arranged at the bottoms of the two sliding grooves (6), first springs (16) are fixedly connected inside the two hidden grooves (15), and the top ends of the two first springs (16) are respectively fixedly connected to the bottoms of the two sliders (5).

5. An injection molding machine processed from plastic waste according to claim 4, characterized in that, A first gear (12) is fixedly connected to the bottom end of the driven shaft (8), a first tooth arc (13) is fixedly connected to the inner wall on one side of the base (1), and a second tooth arc (14) is fixedly connected to the inner wall on the other side of the base (1); The first gear (12) meshes and drives with the first tooth arc (13) and the second tooth arc (14) in turn during circumferential movement.

6. An injection molding machine processed from plastic waste according to claim 5, characterized in that, The cooling mechanism includes a cooling cylinder (17) arranged inside the base (1), a circulation passage (18) formed inside the cooling cylinder (17), and a heat conduction groove (19) formed outside the mold groove; A liquid inlet pipe (20) and a liquid outlet pipe (21) are respectively installed on both sides of the cooling cylinder (17), and the liquid inlet pipe (20) and the liquid outlet pipe (21) are both connected to the circulation passage (18); One side of the heat conduction groove (19) is provided with a fitting groove (22) for providing space for the liquid inlet pipe (20) to enter the inside of the turntable (2). The cooling cylinder (17) is connected to the driving mechanism.

7. An injection molding machine processed using plastic waste according to claim 6, characterized in that, The demolding mechanism includes a plurality of ejector rods (23) installed on the inner wall of the bottom of the lower mold (3), a connecting plate (24) fixedly connected to the bottom ends of the plurality of ejector rods (23), and a second spring (25) fixedly connected to the top of the connecting plate (24). The top end of the second spring (25) is fixedly connected to the bottom of the lower mold (3). The connecting plate (24) cooperates with the driving mechanism.

8. An injection molding machine processed from plastic waste according to claim 7, characterized in that, The driving mechanism includes a motor (26) installed on the inner wall of the bottom of the base (1), a second gear (27) fixedly sleeved on the outer part of the output shaft of the motor (26), and a first driving shaft (28) rotatably connected to the inner wall of the bottom of the base (1). A first one-way gear (29) is installed on the outer part of the first driving shaft (28), the first one-way gear (29) meshes with the second gear (27), and the top end of the first driving shaft (28) is fixedly connected to the center of the bottom of the turntable (2).

9. An injection molding machine processed from plastic waste according to claim 8, characterized in that, The driving mechanism further includes a second driving shaft (30) rotatably connected to the inner wall of the bottom of the base (1), a second reciprocating screw rod (31) fixedly sleeved on the outer part of the second driving shaft (30), and a lifting frame (32) screwed on the outer part of the second reciprocating screw rod (31). The top of the lifting frame (32) is fixedly connected with a first lifting rod (33), and the top of the first lifting rod (33) is fixedly connected with the bottom of the cooling cylinder (17). A plurality of guide rods (34) are also fixedly connected to the inner wall of the bottom of the base (1), and the lifting frame (32) is also slidably sleeved on the outer parts of the plurality of guide rods (34). A second one-way gear (35) is installed on the outer part of the second driving shaft (30), and the second one-way gear (35) meshes with the second gear (27).

10. An injection molding machine processed from plastic waste according to claim 9, characterized in that, The driving mechanism further includes a second lifting rod (36) fixedly connected to the top of the lifting frame (32) and a driving plate (37) fixedly connected to the top end of the second lifting rod (36).

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