Optimized regeneration injection molding system based on plastic part recovery structure

Abstract

The invention relates to the technical field of plastic recycling and injection molding, in particular to an optimized regeneration injection molding system based on a plastic part recycling structure, which comprises a rack, and an injection molding machine and a forming mold which are mounted at the top of the rack, and the forming mold comprises a movable mold which is mounted at the top of the rack in a left-right sliding manner; a cutting mechanism used for cutting off runner materials is installed on the movable die, and a recycling mechanism used for recycling the runner materials is installed on the machine frame. The reverse driving assembly drives the inner rotating ring and the outer rotating ring to rotate reversely, the inner rotating ring and the outer rotating ring drive the abutting assembly and the cutting assembly to rotate reversely, the cutting assembly conducts cutting from one side of a runner material, meanwhile, the abutting rod abuts against the runner material from the other side of the runner material, the baffle blocks the right side of the runner material, and it is avoided that in the cutting process, the runner material is cut off, and the runner material is cut off. And when the mold is opened, the runner material is separated, so that the processing efficiency of the plastic part is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of plastic recycling injection molding, in particular to an optimized regeneration injection molding system based on a plastic parts recycling structure. Background Art

[0002] Injection molding machine (abbreviated as injection machine or injection molding machine) is the main molding equipment for making plastic products of various shapes by using plastic molding molds for thermoplastics or thermosetting materials. Injection molding is achieved through injection molding machines and molds.

[0003] During injection molding, the molten plastic extruded from the injection molding machine enters the cavity between the molds through the runners, where it is then cooled and formed. Because the runners are connected to the cavity, the plastic in the runners cools into runner material. Runner material is a type of "scrap" that is inevitably generated during the production process. Because it does not constitute the main body of the product, it must be separated from the finished product after molding. It is not "waste," but a key link in cost control and environmental recycling in injection molding production. Existing runner material is generally separated from the plastic part after it is removed from the mold, either manually or using specialized separation equipment. This separation process increases the processing time and affects the efficiency of plastic part processing. Furthermore, the separated runner material cannot be recycled in a timely manner and requires dedicated storage. Summary of the Invention

[0004] In order to solve the above problems, the present invention provides an optimized recycling injection molding system based on a plastic parts recycling structure, including a frame and an injection molding machine and a molding mold installed on the top of the frame. The molding mold includes a movable mold installed on the top of the frame for sliding left and right. The movable mold is equipped with a cutting mechanism for cutting the runner material, and the frame is equipped with a recycling mechanism for recycling the runner material.

[0005] The cutting mechanism includes an inner rotating ring and an outer rotating ring rotatably mounted inside the movable mold. The outer rotating ring is rotatably mounted on the outer ring wall of the inner rotating ring. A reverse driving assembly for driving the inner and outer rotating rings to rotate in opposite directions is mounted on the movable mold. Cutting assemblies for cutting the runner material are evenly mounted on the right circumference of the outer rotating ring. Pressing assemblies for pressing and supporting the runner material are evenly mounted on the right circumference of the inner rotating ring. An ejection assembly for ejecting the runner material is also mounted on the movable mold.

[0006] The pressing assembly includes a shell fixedly mounted on the right side of the inner rotating ring, a pressing rod is slidably mounted on one end of the shell facing the counterclockwise direction of the inner rotating ring, a return spring is fixedly mounted inside the shell, a baffle is fixedly connected to the right side of the pressing rod away from one end of the shell, and a limiting mechanism for implementing one-way limiting on the pressing rod is installed on the shell.

[0007] In one possible implementation, the inner and outer rotating rings are located on the left side of the corresponding flow channel on the movable mold, and the movable mold is also provided with arc grooves for the cutting component and the pressing component to rotate and are symmetrically distributed about the flow channel.

[0008] In one possible implementation, the reverse drive assembly includes an inner gear ring and an outer gear ring that are rotatably mounted inside the movable mold and are coaxial, the inner rotating ring is fixedly mounted on the inner gear ring, and the outer rotating ring is fixedly mounted on the outer gear ring. A transmission gear located between the inner gear ring and the outer gear ring is also rotatably mounted inside the movable mold, and both the inner gear ring and the outer gear ring are engaged with the transmission gear. A pushing unit for pushing the outer gear ring to rotate is also installed inside the movable mold.

[0009] In one possible implementation, the pushing unit includes a side rod fixedly mounted on the outer ring wall of the outer gear ring, a movable groove is provided on the side rod, a cylinder located on the front side of the outer gear ring is fixedly mounted inside the movable mold, a sliding rod is rotatably mounted on the top of the telescopic section of the cylinder, and the sliding rod is slidably connected to the movable groove.

[0010] In one possible implementation, the cutting assembly includes a knife seat fixedly mounted on the right side of the outer rotating ring, the right end of the knife seat extends to the outside of the movable mold through an arc groove, and a cutting knife located on the right side of the movable mold is fixedly mounted on the knife seat, and the cutting knife is wedge-shaped at one end facing clockwise toward the outer rotating ring.

[0011] In one possible implementation, the limiting mechanism includes a shaft rod fixedly mounted on one end of the shell near the pressure rod, a buckle is rotatably mounted on the shaft rod, a torsion spring for driving the buckle to rotate clockwise is mounted on the shaft rod, a plurality of wedge-shaped grooves evenly distributed circumferentially are provided on the outer arc wall of the pressure rod, the end of the buckle close to the shell is wedge-shaped and engages with the wedge-shaped groove, and the end of the buckle away from the shell is inclined in a direction away from the central axis of the inner rotating ring.

[0012] In one possible implementation, the ejection assembly includes an ejection rod that is slidably mounted on the movable mold and is coaxial with the inner gear ring. The left end of the ejection rod is fixedly connected to a baffle, and a second return spring that is sleeved on the outside of the ejection rod is fixedly connected between the right side of the baffle and the inner wall of the movable mold. A moving unit for pushing the ejection rod to the right to eject the runner material is installed on the inner gear ring.

[0013] In one possible implementation, the movable unit includes a plurality of arc-shaped leaves that are slidably mounted on the inner ring wall of the inner gear ring and are evenly distributed circumferentially. A plurality of sliders are evenly slidably mounted on the inner circumference of the inner gear ring. The sliders are fixedly connected to the corresponding arc-shaped leaves. A return spring three is fixedly connected between the right side of the slider and the inner wall of the inner gear ring. A round rod corresponding to the arc-shaped leaves is fixedly connected to the outer ring wall of the ejection rod, and the round rod is located on the right side of the corresponding arc-shaped leaf.

[0014] In one possible implementation, the recovery mechanism includes a collecting hopper fixedly mounted on a frame and located below the movable mold, wherein the collecting hopper is internally rotatably mounted with left-right symmetrically distributed crushing rollers, a driving motor for driving the crushing rollers to rotate is fixedly mounted on the front side of the collecting hopper, and a negative pressure suction machine is fixedly connected to the rear side of the collecting hopper, wherein the feed port of the negative pressure suction machine is connected to the interior of the collecting hopper, and the discharge port is arranged above the feed hopper of the injection molding machine.

[0015] The beneficial effects of the present invention are as follows: 1. The present invention drives the inner rotating ring and the outer rotating ring to rotate in the opposite direction through the reverse driving component, and the inner rotating ring and the outer rotating ring respectively drive the pressing component and the cutting component to rotate in the opposite direction. The cutting component cuts from one side of the runner material, and at the same time the pressing rod presses it from the other side of the runner material, and the baffle blocks the right side of the runner material. As the cutting component cuts deeper, the pressing rod can gradually retract into the interior of the shell, avoiding the runner material from being offset during the cutting process, so that the cutting component can smoothly cut the runner material. After the cutting is completed, the return spring will not eject the pressing rod due to the restriction of the limiting mechanism, avoiding the pressing rod from bouncing off the runner material, and improving the processing efficiency of plastic parts by separating the runner material when opening the mold.

[0016] 2. In the present invention, after the cutting assembly cuts off the flowing material, the baffle keeps blocking the runner material, which can prevent the runner material from falling along with the plastic part. When the existing mechanical suction cup removes the plastic part, the reverse drive assembly drives the inner swivel and the outer swivel to rotate in the opposite direction, so that the baffle moves away and no longer blocks the runner material. At this time, the ejection assembly ejects the runner material to the right, causing the runner material to fall into the recycling mechanism. After being crushed by the recycling mechanism, the runner material is transported to the feed hopper of the injection molding machine and mixed with the new material for timely recycling. There is no need for transfer, thereby reducing waste of resources. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0018] Figure 2 It is a schematic diagram of the three-dimensional structure of the movable mold of the present invention.

[0019] Figure 3 It is a front sectional view of the cutting mechanism of the present invention.

[0020] Figure 4 It is a schematic diagram of the three-dimensional structure of the cutting mechanism of the present invention.

[0021] Figure 5 It is a schematic diagram of the three-dimensional structure of the pressing component of the present invention.

[0022] Figure 6 It is a schematic diagram of the three-dimensional structure of the reverse drive component of the present invention.

[0023] Figure 7 It is a schematic diagram of the three-dimensional structure of the ejection assembly of the present invention.

[0024] Figure 8 It is a schematic diagram of the three-dimensional structure of the mobile unit of the present invention.

[0025] Figure 9 It is a schematic diagram of the three-dimensional structure of the recovery mechanism of the present invention.

[0026] In the figure: 1, frame; 2, injection molding machine; 3, molding die; 31, movable mold; 4, cutting mechanism; 41, inner swivel; 42, outer swivel; 43, reverse drive assembly; 431, inner ring gear; 432, outer ring gear; 433, transmission gear; 434, side rod; 435, cylinder; 436, sliding rod; 44, cutting assembly; 441, knife holder; 442, cutting knife; 45, pressing assembly; 451, housing; 452, pressing rod; 453, return spring 1; 45 4. Baffle; 455. Limiting mechanism; 4551. Shaft; 4552. Buckle; 4553. Torsion spring; 4554. Wedge-shaped groove; 46. Ejector assembly; 461. Ejector rod; 462. Baffle; 463. Return spring 2; 464. Moving unit; 4641. Arc leaf; 4642. Slider; 4643. Return spring 3; 4644. Round rod; 5. Recovery mechanism; 51. Collecting hopper; 52. Crushing roller; 53. Drive motor; 54. Negative pressure suction machine. DETAILED DESCRIPTION

[0027] To make the above-mentioned objects, features, and advantages of the present invention more readily apparent, specific embodiments of the present invention are described in detail below with reference to the accompanying drawings. The following description sets forth numerous specific details to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways than those described below, and those skilled in the art may make similar modifications without departing from the scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0028] See also Figure 1 - Figure 9An optimized recycling injection molding system based on a plastic parts recycling structure includes a frame 1 and an injection molding machine 2 and a molding mold 3 installed on the top of the frame 1. The molding mold 3 includes a movable mold 31 installed on the top of the frame 1 for sliding left and right. A cutting mechanism 4 for cutting the runner material is installed on the movable mold 31. A recycling mechanism 5 for recycling the runner material is installed on the frame 1.

[0029] The cutting mechanism 4 includes an inner rotating ring 41 and an outer rotating ring 42 rotatably mounted inside the movable mold 31. The outer rotating ring 42 is rotatably mounted on the outer ring wall of the inner rotating ring 41. A reverse driving component 43 for driving the inner rotating ring 41 and the outer rotating ring 42 to rotate in opposite directions is mounted on the movable mold 31. Cutting components 44 for cutting the runner material are evenly mounted on the right circumference of the outer rotating ring 42. Pressing components 45 for pressing and supporting the runner material are evenly mounted on the right circumference of the inner rotating ring 41. An ejection component 46 for ejecting the runner material is also mounted on the movable mold 31.

[0030] The pressing assembly 45 includes a shell 451 fixedly installed on the right side of the inner rotating ring 41, and a pressing rod 452 is slidably installed on one end of the shell 451 toward the counterclockwise direction of the inner rotating ring 41. A return spring 453 is fixedly installed inside the shell 451, and a baffle 454 is fixedly connected to the right side of the pressing rod 452 away from the end of the shell 451. A limiting mechanism 455 for implementing one-way limiting on the pressing rod 452 is installed on the shell 451.

[0031] During specific use, when the movable mold 31 moves to the left to open the mold, the reverse drive component 43 drives the inner swivel 41 and the outer swivel 42 to rotate in the opposite direction, and the inner swivel 41 drives the shell 451 to rotate counterclockwise, and the shell 451 pushes the pressure rod 452 and the return spring 453 to rotate counterclockwise, so that the pressure rod 452 is pressed against one side of the runner material and the baffle 454 is blocked on the right side of the runner material. At the same time, the outer swivel 42 drives the cutting component 44 to rotate clockwise, so that the cutting component 44 cuts from the other side of the runner material. The pressure rod 452 is used to support and limit the runner material, which can avoid the runner material from being offset when the cutting component 44 is cutting, which is beneficial for the cutting component 44 to cut the runner material.

[0032] As the inner rotating ring 41 and the outer rotating ring 42 rotate, the end of the shell 451 gradually approaches the runner material. At this time, the pressure rod 452 will be squeezed into the interior of the shell 451, and the return spring 453 will be compressed and contracted. By gradually shortening the pressure rod 452, the pressure rod 452 can always maintain support for the flow material during the rotation of the inner rotating ring 41, and at the same time prevent the pressure rod 452 from pushing away the runner material when the runner material is cut off, thereby facilitating the subsequent recycling of the runner material.

[0033] After the cutting assembly 44 completely cuts off the runner material, the movable mold 31 moves to a fully open state. At this time, the plastic part is removed from the movable mold 31 by the existing mechanical suction cup. When sucking the plastic part, the pressure rod 452 and the baffle 454 always keep the runner material tightly pressed and blocked to prevent the moving plastic part from knocking the runner material off; after the plastic part is removed, the movable mold 31 moves to the right and closes the mold again. During the movement, the reverse drive assembly 43 drives the inner swivel 41 and the outer swivel 42 to rotate in opposite directions, so that the inner swivel 41 and the outer swivel 42 respectively drive the pressure assembly 45 and the cutting assembly 44 to leave the runner material, and finally the runner material is pushed out to the recovery mechanism 5 for recycling through the ejection assembly 46. By separating the runner material when the mold is opened, the processing efficiency of the plastic parts is improved.

[0034] See also Figure 2 - Figure 4 The inner swivel ring 41 and the outer swivel ring 42 are located on the left side of the corresponding flow channel on the movable mold 31. The movable mold 31 is also provided with arc grooves for the rotation of the cutting component 44 and the pressing component 45 and are symmetrically distributed about the flow channel.

[0035] During specific use, arc grooves are set on the front and back sides of the runner to enable the cutting component 44 and the pressing component 45 to move. The arc grooves are not connected to the runner. During injection molding, the molten plastic in the runner will not enter the arc grooves, avoiding obstruction of the cutting component 44 and the pressing component 45 from cutting the runner material.

[0036] See also Figure 4 and Figure 6 The reverse drive assembly 43 includes an inner ring gear 431 and an outer ring gear 432 rotatably mounted inside the movable mold 31 and coaxially. The inner rotating ring 41 is fixedly mounted on the inner ring gear 431, and the outer rotating ring 42 is fixedly mounted on the outer ring gear 432. A transmission gear 433 located between the inner ring gear 431 and the outer ring gear 432 is also rotatably mounted inside the movable mold 31. Both the inner ring gear 431 and the outer ring gear 432 are engaged with the transmission gear 433. A pushing unit for pushing the outer ring gear 432 to rotate is also installed inside the movable mold 31.

[0037] See also Figure 4 and Figure 6 The pushing unit includes a side rod 434 fixedly mounted on the outer ring wall of the outer gear ring 432, and a movable groove is provided on the side rod 434. A cylinder 435 located in front of the outer gear ring 432 is fixedly mounted inside the movable mold 31, and a sliding rod 436 is rotatably mounted on the top of the telescopic section of the cylinder 435, and the sliding rod 436 is slidably connected to the movable groove.

[0038] During specific use, the cylinder 435 pushes the sliding rod 436 to move upward, and the sliding rod 436 pushes the side rod 434 to rotate upward. When the side rod 434 rotates, the sliding rod 436 will slide in the movable groove of the side rod 434, and the side rod 434 is used to drive the outer ring gear 432 to rotate clockwise. The outer ring gear 432 drives the inner ring gear 431 to rotate counterclockwise through the transmission gear 433, and then the inner ring gear 431 and the outer ring gear 432 respectively drive the inner rotating ring 41 and the outer rotating ring 42 to rotate, so that the inner rotating ring 41 and the outer rotating ring 42 can rotate in opposite directions, so that the cutting assembly 44 and the pressure rod 452 can cut and support the flow channel material from both sides respectively.

[0039] See also Figure 4 The cutting assembly 44 includes a knife seat 441 fixedly mounted on the right side of the outer rotating ring 42. The right end of the knife seat 441 extends to the outside of the movable mold 31 through an arc groove. A cutting knife 442 located on the right side of the movable mold 31 is fixedly mounted on the knife seat 441. The end of the cutting knife 442 facing the outer rotating ring 42 in a clockwise direction is wedge-shaped.

[0040] During specific use, the outer rotating ring 42 drives the knife seat 441 and the cutting knife 442 to rotate clockwise, so that the end of the cutting knife 442 cuts the connection between the runner material and the plastic part. The end of the cutting knife 442 is set to be wedge-shaped, which is conducive to cutting the runner material and reducing the cutting resistance.

[0041] See also Figure 4 and Figure 5 The limiting mechanism 455 includes a shaft rod 4551 fixedly mounted on the shell 451 near one end of the pressure rod 452, a buckle 4552 is rotatably mounted on the shaft rod 4551, and a torsion spring 4553 for driving the buckle 4552 to rotate clockwise is mounted on the shaft rod 4551. A plurality of wedge-shaped grooves 4554 evenly distributed in the circumference are provided on the outer arc wall of the pressure rod 452. The end of the buckle 4552 close to the shell 451 is wedge-shaped and engages with the wedge grooves 4554, and the end of the buckle 4552 away from the shell 451 is inclined in the direction away from the central axis of the inner rotating ring 41.

[0042] When in use, the limiting mechanism 455 is provided to implement one-way limiting of the pressure rod 452. When the pressure rod 452 is blocked by the flow material and retracts into the interior of the shell 451, the oblique side of the wedge groove 4554 slides with the wedge-shaped end of the buckle 4552, and the oblique side of the wedge groove 4554 is used to push the wedge-shaped end of the buckle 4552 to rotate away from the shell 451, so that the pressure rod 452 can be smoothly retracted into the interior of the shell 451. When the flow material is cut off and can no longer block the pressure rod 452, the wedge-shaped end of the buckle 4552 clamps the wedge groove 4554, so that the pressure rod 452 cannot be ejected by the return spring 453.

[0043] When the inner rotating ring 41 and the outer rotating ring 42 drive the shell 451 and the knife seat 441 to leave the runner material, the shell 451 will first drive the pressure rod 452 and the baffle 454 away from the runner material, and no longer support and block the runner material. When the knife seat 441 moves to the buckle 4552, the knife seat 441 is used to push the buckle 4552 to rotate counterclockwise, so that the wedge-shaped end of the buckle 4552 releases the clamping limit on the wedge-shaped groove 4554. At this time, the pressure rod 452 extends outward under the push of the rebound force of the baffle 454, which is convenient for subsequent cutting of the runner material.

[0044] See also Figure 3 and Figure 7 The ejection assembly 46 includes an ejection rod 461 that is slidably mounted on the movable mold 31 and is coaxial with the inner gear ring 431. The left end of the ejection rod 461 is fixedly connected to a baffle 462. A return spring 463 that is sleeved on the outside of the ejection rod 461 is fixedly connected between the right side of the baffle 462 and the inner wall of the movable mold 31. A moving unit 464 for pushing the ejection rod 461 to move rightward to eject the runner material is installed on the inner gear ring 431.

[0045] During specific use, in the initial state, the return spring 463 is in a compressed state, and the rebound force of the return spring 463 is used to push the ejector rod 461 to move to the left, so that the ejector rod 461 remains in a contracted state inside the movable mold 31, preventing the ejector rod 461 from blocking the flow channel.

[0046] See also Figure 7 and Figure 8 The moving unit 464 includes a plurality of arc-shaped leaves 4641 that are slidably mounted on the inner ring wall of the inner gear ring 431 and are evenly distributed in the circumferential direction. A plurality of sliders 4642 are evenly slidably mounted on the inner circumference of the inner gear ring 431. The sliders 4642 are fixedly connected to the corresponding arc-shaped leaves 4641. A return spring 4643 is fixedly connected between the right side of the slider 4642 and the inner wall of the inner gear ring 431. A round rod 4644 corresponding to the arc-shaped leaves 4641 is fixedly connected to the outer ring wall of the ejection rod 461. The round rod 4644 is located on the right side of the corresponding arc-shaped leaf 4641.

[0047] During specific use, when the inner rotating ring 41 rotates clockwise to drive the pressure rod 452 and the baffle 454 away from the runner material, the inner gear ring 431 drives the arc leaf 4641 to rotate clockwise. When the arc leaf 4641 rotates, the round rod 4644 slides along the surface of the arc leaf 4641. The arc leaf 4641 pushes the round rod 4644 and the ejector rod 461 to move to the right, so that the ejector rod 461 pushes the runner material to the right from the movable mold 31, and the runner material falls under the action of its own gravity.

[0048] When the round rod 4644 moves to the rightmost end of the arc-shaped leaf 4641, as the inner gear ring 431 continues to rotate, the arc-shaped leaf 4641 can no longer support the round rod 4644. At this time, the rebound force of the return spring 2 463 is used to push the blocking piece 462 and the ejector rod 461 to move to the left, so that the ejector rod 461 is retracted into the interior of the movable mold 31. At this time, the round rod 4644 will fall onto the adjacent arc-shaped leaf 4641, preventing the ejector rod 461 from blocking the runner, thereby facilitating the subsequent injection molding of plastic parts.

[0049] When the inner gear ring 431 rotates counterclockwise, the inner gear ring 431 drives the arc-shaped leaf 4641 to rotate counterclockwise. When the round rod 4644 reaches the left end of the arc-shaped leaf 4641, as the arc-shaped leaf 4641 continues to rotate, the round rod 4644 will separate from the left end of the arc-shaped leaf 4641, and then the adjacent arc-shaped leaf 4641 will move to the round rod 4644. Then, the adjacent arc-shaped leaf 4641 will move to the right under the push of the round rod 4644. At this time, the return spring three 4643 is compressed and contracted. When the left end of the adjacent arc-shaped leaf 4641 passes the round rod 4644, the adjacent arc-shaped leaf 4641 will move to the left and reset under the push of the return spring three 4643 to avoid affecting the rotation of the inner gear ring 431. In this way, when the inner gear ring 431 rotates clockwise again, the arc-shaped leaf 4641 can drive the round rod 4644 again.

[0050] See also Figure 1 and Figure 9 The recovery mechanism 5 includes a collecting hopper 51 fixedly mounted on the frame 1 and located below the movable mold 31. Crushing rollers 52 symmetrically distributed on the left and right are rotatably installed inside the collecting hopper 51. A driving motor 53 for driving the crushing rollers 52 to rotate is fixedly mounted on the front side of the collecting hopper 51. A negative pressure suction machine 54 is fixedly connected to the rear side of the collecting hopper 51. The feed port of the negative pressure suction machine 54 is connected to the inside of the collecting hopper 51, and the discharge port is arranged above the feed hopper of the injection molding machine 2.

[0051] During specific use, the falling flow material falls into the collecting hopper 51, and the crushing roller 52 is driven by the driving motor 53 to rotate, so that the crushing roller 52 crushes the runner material. The crushed runner material is transported to the feed hopper of the injection molding machine 2 by the negative pressure suction machine 54, and is mixed with the raw materials in the feed hopper for recycling. Since the composition of the runner material is exactly the same as that of the plastic parts, the quality of the plastic parts will not be reduced, and material waste will be reduced.

[0052] In the description of the present invention, it should also be noted that, unless otherwise expressly specified or limited, the terms "disposed," "connected," "installed," and "connected" should be understood in a broad sense. For example, they may refer to fixed or detachable connections, integral or sliding connections; mechanical or electrical connections; direct or indirect connections through an intermediate medium; or internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0053] The embodiments of this specific implementation method are all preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the scope of protection of the present invention.

Claims

1. An optimized regeneration injection molding system based on a plastic parts recycling structure, comprising a frame (1), an injection molding machine (2) and a molding die (3) mounted on top of the frame (1), wherein the molding die (3) comprises a movable die (31) mounted on the top of the frame (1) in a sliding manner. The system is characterized in that: The movable mold (31) is provided with a cutting mechanism (4) for cutting the runner material, and the frame (1) is provided with a recovery mechanism (5) for recovering the runner material. The cutting mechanism (4) comprises an inner rotating ring (41) and an outer rotating ring (42) rotatably mounted inside the movable mold (31); the outer rotating ring (42) is rotatably mounted on the outer ring wall of the inner rotating ring (41); a reverse driving assembly (43) for driving the inner rotating ring (41) and the outer rotating ring (42) to rotate in opposite directions is mounted on the movable mold (31); cutting assemblies (44) for cutting the flow channel material are evenly mounted on the right circumference of the outer rotating ring (42); pressing assemblies (45) for pressing and supporting the flow channel material are evenly mounted on the right circumference of the inner rotating ring (41); and an ejection assembly (46) for ejecting the flow channel material is also mounted on the movable mold (31); The pressing assembly (45) includes a shell (451) fixedly mounted on the right side of the inner rotating ring (41); a pressing rod (452) is slidably mounted on one end of the shell (451) facing the inner rotating ring (41) in a counterclockwise direction; a return spring (453) is fixedly mounted inside the shell (451); a baffle (454) is fixedly connected to the right side of the pressing rod (452) away from the shell (451); and a limiting mechanism (455) is mounted on the shell (451) for implementing one-way limiting on the pressing rod (452).

2. The optimized regeneration injection molding system based on the plastic parts recycling structure according to claim 1, characterized in that: The inner rotating ring (41) and the outer rotating ring (42) are located on the left side of the corresponding flow channel on the movable mold (31). The movable mold (31) is also provided with arc grooves for the cutting component (44) and the pressing component (45) to rotate and are symmetrically distributed with respect to the flow channel.

3. The optimized regeneration injection molding system based on the plastic parts recycling structure according to claim 1, characterized in that: The reverse drive assembly (43) includes an inner gear ring (431) and an outer gear ring (432) rotatably mounted inside the movable mold (31) and coaxially, the inner rotating ring (41) being fixedly mounted on the inner gear ring (431), and the outer rotating ring (42) being fixedly mounted on the outer gear ring (432). A transmission gear (433) located between the inner gear ring (431) and the outer gear ring (432) is also rotatably mounted inside the movable mold (31), and both the inner gear ring (431) and the outer gear ring (432) are meshed with the transmission gear (433). A pushing unit for pushing the outer gear ring (432) to rotate is also installed inside the movable mold (31).

4. The optimized regeneration injection molding system based on the plastic parts recycling structure according to claim 3, characterized in that: The pushing unit includes a side rod (434) fixedly mounted on the outer ring wall of the outer gear ring (432), a movable groove being provided on the side rod (434), a cylinder (435) located in front of the outer gear ring (432) being fixedly mounted inside the movable mold (31), a sliding rod (436) being rotatably mounted on the top of the telescopic section of the cylinder (435), and the sliding rod (436) being slidably connected to the movable groove.

5. The optimized regeneration injection molding system based on the plastic parts recycling structure according to claim 2, characterized in that: The cutting assembly (44) includes a knife seat (441) fixedly mounted on the right side of the outer rotating ring (42), the right end of the knife seat (441) extending to the outside of the movable mold (31) through an arc groove, and a cutting knife (442) located on the right side of the movable mold (31) is fixedly mounted on the knife seat (441), and the cutting knife (442) has a wedge-shaped end facing clockwise toward the outer rotating ring (42).

6. The optimized regeneration injection molding system based on the plastic parts recycling structure according to claim 1, characterized in that: The limiting mechanism (455) includes a shaft (4551) fixedly mounted on one end of the housing (451) near the pressure rod (452), a buckle (4552) rotatably mounted on the shaft (4551), a torsion spring (4553) for driving the buckle (4552) to rotate clockwise mounted on the shaft (4551), a plurality of wedge-shaped grooves (4554) uniformly distributed circumferentially are formed on the outer arc wall of the pressure rod (452), the end of the buckle (4552) near the housing (451) is wedge-shaped and engages with the wedge-shaped grooves (4554), and the end of the buckle (4552) away from the housing (451) is inclined in a direction away from the central axis of the inner rotating ring (41).

7. The optimized regeneration injection molding system based on the plastic parts recycling structure according to claim 3, characterized in that: The ejection assembly (46) includes an ejection rod (461) slidably mounted on the movable mold (31) and coaxial with the inner gear ring (431). The left end of the ejection rod (461) is fixedly connected to a baffle (462). A second return spring (463) sleeved on the outside of the ejection rod (461) is fixedly connected between the right side of the baffle (462) and the inner wall of the movable mold (31). A moving unit (464) for pushing the ejection rod (461) to move rightward to eject the runner material is installed on the inner gear ring (431).

8. The optimized regeneration injection molding system based on the plastic parts recycling structure according to claim 7, characterized in that: The moving unit (464) includes a plurality of arc-shaped leaves (4641) slidably mounted on the inner ring wall of the inner gear ring (431) and uniformly distributed in the circumferential direction. A plurality of sliders (4642) are uniformly slidably mounted on the inner circumference of the inner gear ring (431). The sliders (4642) are fixedly connected to the corresponding arc-shaped leaves (4641). A return spring (4643) is fixedly connected between the right side of the slider (4642) and the inner wall of the inner gear ring (431). Round rods (4644) corresponding to the arc-shaped leaves (4641) are fixedly connected to the outer ring wall of the ejection rod (461). The round rods (4644) are located on the right side of the corresponding arc-shaped leaves (4641).

9. The optimized regeneration injection molding system based on the plastic parts recycling structure according to claim 1, characterized in that: The recycling mechanism (5) comprises a collecting hopper (51) fixedly mounted on the frame (1) and located below the movable mold (31); crushing rollers (52) symmetrically distributed on the left and right are rotatably mounted inside the collecting hopper (51); a driving motor (53) for driving the crushing rollers (52) to rotate is fixedly mounted on the front side of the collecting hopper (51); a negative pressure suction machine (54) is fixedly connected to the rear side of the collecting hopper (51); a feed port of the negative pressure suction machine (54) is communicated with the interior of the collecting hopper (51); and a discharge port is arranged above the feed hopper of the injection molding machine (2).

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